1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
4 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* See the GDB User Guide for details of the GDB remote protocol. */
25 #include "gdb_string.h"
31 #include "exceptions.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
44 #include "cli/cli-decode.h"
45 #include "cli/cli-setshow.h"
46 #include "target-descriptions.h"
51 #include "event-loop.h"
52 #include "event-top.h"
58 #include "gdbcore.h" /* for exec_bfd */
60 #include "remote-fileio.h"
61 #include "gdb/fileio.h"
63 #include "xml-support.h"
65 #include "memory-map.h"
67 #include "tracepoint.h"
71 /* Temp hacks for tracepoint encoding migration. */
72 static char *target_buf
;
73 static long target_buf_size
;
75 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
76 char ***tdp_actions
, char ***stepping_actions
);
78 /* The size to align memory write packets, when practical. The protocol
79 does not guarantee any alignment, and gdb will generate short
80 writes and unaligned writes, but even as a best-effort attempt this
81 can improve bulk transfers. For instance, if a write is misaligned
82 relative to the target's data bus, the stub may need to make an extra
83 round trip fetching data from the target. This doesn't make a
84 huge difference, but it's easy to do, so we try to be helpful.
86 The alignment chosen is arbitrary; usually data bus width is
87 important here, not the possibly larger cache line size. */
88 enum { REMOTE_ALIGN_WRITES
= 16 };
90 /* Prototypes for local functions. */
91 static void cleanup_sigint_signal_handler (void *dummy
);
92 static void initialize_sigint_signal_handler (void);
93 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
94 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
97 static void handle_remote_sigint (int);
98 static void handle_remote_sigint_twice (int);
99 static void async_remote_interrupt (gdb_client_data
);
100 void async_remote_interrupt_twice (gdb_client_data
);
102 static void remote_files_info (struct target_ops
*ignore
);
104 static void remote_prepare_to_store (struct regcache
*regcache
);
106 static void remote_open (char *name
, int from_tty
);
108 static void extended_remote_open (char *name
, int from_tty
);
110 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
112 static void remote_close (int quitting
);
114 static void remote_mourn (struct target_ops
*ops
);
116 static void extended_remote_restart (void);
118 static void extended_remote_mourn (struct target_ops
*);
120 static void remote_mourn_1 (struct target_ops
*);
122 static void remote_send (char **buf
, long *sizeof_buf_p
);
124 static int readchar (int timeout
);
126 static void remote_kill (struct target_ops
*ops
);
128 static int tohex (int nib
);
130 static int remote_can_async_p (void);
132 static int remote_is_async_p (void);
134 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
135 void *context
), void *context
);
137 static int remote_async_mask (int new_mask
);
139 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
141 static void remote_interrupt (int signo
);
143 static void remote_interrupt_twice (int signo
);
145 static void interrupt_query (void);
147 static void set_general_thread (struct ptid ptid
);
148 static void set_continue_thread (struct ptid ptid
);
150 static void get_offsets (void);
152 static void skip_frame (void);
154 static long read_frame (char **buf_p
, long *sizeof_buf
);
156 static int hexnumlen (ULONGEST num
);
158 static void init_remote_ops (void);
160 static void init_extended_remote_ops (void);
162 static void remote_stop (ptid_t
);
164 static int ishex (int ch
, int *val
);
166 static int stubhex (int ch
);
168 static int hexnumstr (char *, ULONGEST
);
170 static int hexnumnstr (char *, ULONGEST
, int);
172 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
174 static void print_packet (char *);
176 static void compare_sections_command (char *, int);
178 static void packet_command (char *, int);
180 static int stub_unpack_int (char *buff
, int fieldlength
);
182 static ptid_t
remote_current_thread (ptid_t oldptid
);
184 static void remote_find_new_threads (void);
186 static void record_currthread (ptid_t currthread
);
188 static int fromhex (int a
);
190 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
192 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
194 static int putpkt_binary (char *buf
, int cnt
);
196 static void check_binary_download (CORE_ADDR addr
);
198 struct packet_config
;
200 static void show_packet_config_cmd (struct packet_config
*config
);
202 static void update_packet_config (struct packet_config
*config
);
204 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
205 struct cmd_list_element
*c
);
207 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
209 struct cmd_list_element
*c
,
212 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
213 static ptid_t
read_ptid (char *buf
, char **obuf
);
215 static void remote_set_permissions (void);
218 static int remote_get_trace_status (struct trace_status
*ts
);
220 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
222 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
224 static void remote_query_supported (void);
226 static void remote_check_symbols (struct objfile
*objfile
);
228 void _initialize_remote (void);
231 static struct stop_reply
*stop_reply_xmalloc (void);
232 static void stop_reply_xfree (struct stop_reply
*);
233 static void do_stop_reply_xfree (void *arg
);
234 static void remote_parse_stop_reply (char *buf
, struct stop_reply
*);
235 static void push_stop_reply (struct stop_reply
*);
236 static void remote_get_pending_stop_replies (void);
237 static void discard_pending_stop_replies (int pid
);
238 static int peek_stop_reply (ptid_t ptid
);
240 static void remote_async_inferior_event_handler (gdb_client_data
);
241 static void remote_async_get_pending_events_handler (gdb_client_data
);
243 static void remote_terminal_ours (void);
245 static int remote_read_description_p (struct target_ops
*target
);
247 static void remote_console_output (char *msg
);
249 /* The non-stop remote protocol provisions for one pending stop reply.
250 This is where we keep it until it is acknowledged. */
252 static struct stop_reply
*pending_stop_reply
= NULL
;
256 static struct cmd_list_element
*remote_cmdlist
;
258 /* For "set remote" and "show remote". */
260 static struct cmd_list_element
*remote_set_cmdlist
;
261 static struct cmd_list_element
*remote_show_cmdlist
;
263 /* Description of the remote protocol state for the currently
264 connected target. This is per-target state, and independent of the
265 selected architecture. */
269 /* A buffer to use for incoming packets, and its current size. The
270 buffer is grown dynamically for larger incoming packets.
271 Outgoing packets may also be constructed in this buffer.
272 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
273 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
278 /* If we negotiated packet size explicitly (and thus can bypass
279 heuristics for the largest packet size that will not overflow
280 a buffer in the stub), this will be set to that packet size.
281 Otherwise zero, meaning to use the guessed size. */
282 long explicit_packet_size
;
284 /* remote_wait is normally called when the target is running and
285 waits for a stop reply packet. But sometimes we need to call it
286 when the target is already stopped. We can send a "?" packet
287 and have remote_wait read the response. Or, if we already have
288 the response, we can stash it in BUF and tell remote_wait to
289 skip calling getpkt. This flag is set when BUF contains a
290 stop reply packet and the target is not waiting. */
291 int cached_wait_status
;
293 /* True, if in no ack mode. That is, neither GDB nor the stub will
294 expect acks from each other. The connection is assumed to be
298 /* True if we're connected in extended remote mode. */
301 /* True if the stub reported support for multi-process
303 int multi_process_aware
;
305 /* True if we resumed the target and we're waiting for the target to
306 stop. In the mean time, we can't start another command/query.
307 The remote server wouldn't be ready to process it, so we'd
308 timeout waiting for a reply that would never come and eventually
309 we'd close the connection. This can happen in asynchronous mode
310 because we allow GDB commands while the target is running. */
311 int waiting_for_stop_reply
;
313 /* True if the stub reports support for non-stop mode. */
316 /* True if the stub reports support for vCont;t. */
319 /* True if the stub reports support for conditional tracepoints. */
320 int cond_tracepoints
;
322 /* True if the stub reports support for fast tracepoints. */
323 int fast_tracepoints
;
325 /* True if the stub reports support for static tracepoints. */
326 int static_tracepoints
;
328 /* True if the stub can continue running a trace while GDB is
330 int disconnected_tracing
;
332 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
333 responded to that. */
337 /* Private data that we'll store in (struct thread_info)->private. */
338 struct private_thread_info
345 free_private_thread_info (struct private_thread_info
*info
)
351 /* Returns true if the multi-process extensions are in effect. */
353 remote_multi_process_p (struct remote_state
*rs
)
355 return rs
->extended
&& rs
->multi_process_aware
;
358 /* This data could be associated with a target, but we do not always
359 have access to the current target when we need it, so for now it is
360 static. This will be fine for as long as only one target is in use
362 static struct remote_state remote_state
;
364 static struct remote_state
*
365 get_remote_state_raw (void)
367 return &remote_state
;
370 /* Description of the remote protocol for a given architecture. */
374 long offset
; /* Offset into G packet. */
375 long regnum
; /* GDB's internal register number. */
376 LONGEST pnum
; /* Remote protocol register number. */
377 int in_g_packet
; /* Always part of G packet. */
378 /* long size in bytes; == register_size (target_gdbarch, regnum);
380 /* char *name; == gdbarch_register_name (target_gdbarch, regnum);
384 struct remote_arch_state
386 /* Description of the remote protocol registers. */
387 long sizeof_g_packet
;
389 /* Description of the remote protocol registers indexed by REGNUM
390 (making an array gdbarch_num_regs in size). */
391 struct packet_reg
*regs
;
393 /* This is the size (in chars) of the first response to the ``g''
394 packet. It is used as a heuristic when determining the maximum
395 size of memory-read and memory-write packets. A target will
396 typically only reserve a buffer large enough to hold the ``g''
397 packet. The size does not include packet overhead (headers and
399 long actual_register_packet_size
;
401 /* This is the maximum size (in chars) of a non read/write packet.
402 It is also used as a cap on the size of read/write packets. */
403 long remote_packet_size
;
406 long sizeof_pkt
= 2000;
408 /* Utility: generate error from an incoming stub packet. */
410 trace_error (char *buf
)
413 return; /* not an error msg */
416 case '1': /* malformed packet error */
417 if (*++buf
== '0') /* general case: */
418 error (_("remote.c: error in outgoing packet."));
420 error (_("remote.c: error in outgoing packet at field #%ld."),
421 strtol (buf
, NULL
, 16));
423 error (_("trace API error 0x%s."), ++buf
);
425 error (_("Target returns error code '%s'."), buf
);
429 /* Utility: wait for reply from stub, while accepting "O" packets. */
431 remote_get_noisy_reply (char **buf_p
,
434 do /* Loop on reply from remote stub. */
438 QUIT
; /* Allow user to bail out with ^C. */
439 getpkt (buf_p
, sizeof_buf
, 0);
443 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
446 CORE_ADDR from
, to
, org_to
;
448 int adjusted_size
= 0;
449 volatile struct gdb_exception ex
;
451 p
= buf
+ strlen ("qRelocInsn:");
452 pp
= unpack_varlen_hex (p
, &ul
);
454 error (_("invalid qRelocInsn packet: %s"), buf
);
458 pp
= unpack_varlen_hex (p
, &ul
);
463 TRY_CATCH (ex
, RETURN_MASK_ALL
)
465 gdbarch_relocate_instruction (target_gdbarch
, &to
, from
);
469 adjusted_size
= to
- org_to
;
471 sprintf (buf
, "qRelocInsn:%x", adjusted_size
);
474 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
476 /* Propagate memory errors silently back to the target.
477 The stub may have limited the range of addresses we
478 can write to, for example. */
483 /* Something unexpectedly bad happened. Be verbose so
484 we can tell what, and propagate the error back to the
485 stub, so it doesn't get stuck waiting for a
487 exception_fprintf (gdb_stderr
, ex
,
488 _("warning: relocating instruction: "));
492 else if (buf
[0] == 'O' && buf
[1] != 'K')
493 remote_console_output (buf
+ 1); /* 'O' message from stub */
495 return buf
; /* Here's the actual reply. */
500 /* Handle for retreving the remote protocol data from gdbarch. */
501 static struct gdbarch_data
*remote_gdbarch_data_handle
;
503 static struct remote_arch_state
*
504 get_remote_arch_state (void)
506 return gdbarch_data (target_gdbarch
, remote_gdbarch_data_handle
);
509 /* Fetch the global remote target state. */
511 static struct remote_state
*
512 get_remote_state (void)
514 /* Make sure that the remote architecture state has been
515 initialized, because doing so might reallocate rs->buf. Any
516 function which calls getpkt also needs to be mindful of changes
517 to rs->buf, but this call limits the number of places which run
519 get_remote_arch_state ();
521 return get_remote_state_raw ();
525 compare_pnums (const void *lhs_
, const void *rhs_
)
527 const struct packet_reg
* const *lhs
= lhs_
;
528 const struct packet_reg
* const *rhs
= rhs_
;
530 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
532 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
539 init_remote_state (struct gdbarch
*gdbarch
)
541 int regnum
, num_remote_regs
, offset
;
542 struct remote_state
*rs
= get_remote_state_raw ();
543 struct remote_arch_state
*rsa
;
544 struct packet_reg
**remote_regs
;
546 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
548 /* Use the architecture to build a regnum<->pnum table, which will be
549 1:1 unless a feature set specifies otherwise. */
550 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
551 gdbarch_num_regs (gdbarch
),
553 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
555 struct packet_reg
*r
= &rsa
->regs
[regnum
];
557 if (register_size (gdbarch
, regnum
) == 0)
558 /* Do not try to fetch zero-sized (placeholder) registers. */
561 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
566 /* Define the g/G packet format as the contents of each register
567 with a remote protocol number, in order of ascending protocol
570 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
571 * sizeof (struct packet_reg
*));
572 for (num_remote_regs
= 0, regnum
= 0;
573 regnum
< gdbarch_num_regs (gdbarch
);
575 if (rsa
->regs
[regnum
].pnum
!= -1)
576 remote_regs
[num_remote_regs
++] = &rsa
->regs
[regnum
];
578 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
581 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
583 remote_regs
[regnum
]->in_g_packet
= 1;
584 remote_regs
[regnum
]->offset
= offset
;
585 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
588 /* Record the maximum possible size of the g packet - it may turn out
590 rsa
->sizeof_g_packet
= offset
;
592 /* Default maximum number of characters in a packet body. Many
593 remote stubs have a hardwired buffer size of 400 bytes
594 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
595 as the maximum packet-size to ensure that the packet and an extra
596 NUL character can always fit in the buffer. This stops GDB
597 trashing stubs that try to squeeze an extra NUL into what is
598 already a full buffer (As of 1999-12-04 that was most stubs). */
599 rsa
->remote_packet_size
= 400 - 1;
601 /* This one is filled in when a ``g'' packet is received. */
602 rsa
->actual_register_packet_size
= 0;
604 /* Should rsa->sizeof_g_packet needs more space than the
605 default, adjust the size accordingly. Remember that each byte is
606 encoded as two characters. 32 is the overhead for the packet
607 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
608 (``$NN:G...#NN'') is a better guess, the below has been padded a
610 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
611 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
613 /* Make sure that the packet buffer is plenty big enough for
614 this architecture. */
615 if (rs
->buf_size
< rsa
->remote_packet_size
)
617 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
618 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
624 /* Return the current allowed size of a remote packet. This is
625 inferred from the current architecture, and should be used to
626 limit the length of outgoing packets. */
628 get_remote_packet_size (void)
630 struct remote_state
*rs
= get_remote_state ();
631 struct remote_arch_state
*rsa
= get_remote_arch_state ();
633 if (rs
->explicit_packet_size
)
634 return rs
->explicit_packet_size
;
636 return rsa
->remote_packet_size
;
639 static struct packet_reg
*
640 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
642 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch
))
646 struct packet_reg
*r
= &rsa
->regs
[regnum
];
648 gdb_assert (r
->regnum
== regnum
);
653 static struct packet_reg
*
654 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
658 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch
); i
++)
660 struct packet_reg
*r
= &rsa
->regs
[i
];
668 /* FIXME: graces/2002-08-08: These variables should eventually be
669 bound to an instance of the target object (as in gdbarch-tdep()),
670 when such a thing exists. */
672 /* This is set to the data address of the access causing the target
673 to stop for a watchpoint. */
674 static CORE_ADDR remote_watch_data_address
;
676 /* This is non-zero if target stopped for a watchpoint. */
677 static int remote_stopped_by_watchpoint_p
;
679 static struct target_ops remote_ops
;
681 static struct target_ops extended_remote_ops
;
683 static int remote_async_mask_value
= 1;
685 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
686 ``forever'' still use the normal timeout mechanism. This is
687 currently used by the ASYNC code to guarentee that target reads
688 during the initial connect always time-out. Once getpkt has been
689 modified to return a timeout indication and, in turn
690 remote_wait()/wait_for_inferior() have gained a timeout parameter
692 static int wait_forever_enabled_p
= 1;
694 /* Allow the user to specify what sequence to send to the remote
695 when he requests a program interruption: Although ^C is usually
696 what remote systems expect (this is the default, here), it is
697 sometimes preferable to send a break. On other systems such
698 as the Linux kernel, a break followed by g, which is Magic SysRq g
699 is required in order to interrupt the execution. */
700 const char interrupt_sequence_control_c
[] = "Ctrl-C";
701 const char interrupt_sequence_break
[] = "BREAK";
702 const char interrupt_sequence_break_g
[] = "BREAK-g";
703 static const char *interrupt_sequence_modes
[] =
705 interrupt_sequence_control_c
,
706 interrupt_sequence_break
,
707 interrupt_sequence_break_g
,
710 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
713 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
714 struct cmd_list_element
*c
,
717 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
718 fprintf_filtered (file
,
719 _("Send the ASCII ETX character (Ctrl-c) "
720 "to the remote target to interrupt the "
721 "execution of the program.\n"));
722 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
723 fprintf_filtered (file
,
724 _("send a break signal to the remote target "
725 "to interrupt the execution of the program.\n"));
726 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
727 fprintf_filtered (file
,
728 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
729 "the remote target to interrupt the execution "
730 "of Linux kernel.\n"));
732 internal_error (__FILE__
, __LINE__
,
733 _("Invalid value for interrupt_sequence_mode: %s."),
734 interrupt_sequence_mode
);
737 /* This boolean variable specifies whether interrupt_sequence is sent
738 to the remote target when gdb connects to it.
739 This is mostly needed when you debug the Linux kernel: The Linux kernel
740 expects BREAK g which is Magic SysRq g for connecting gdb. */
741 static int interrupt_on_connect
= 0;
743 /* This variable is used to implement the "set/show remotebreak" commands.
744 Since these commands are now deprecated in favor of "set/show remote
745 interrupt-sequence", it no longer has any effect on the code. */
746 static int remote_break
;
749 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
752 interrupt_sequence_mode
= interrupt_sequence_break
;
754 interrupt_sequence_mode
= interrupt_sequence_control_c
;
758 show_remotebreak (struct ui_file
*file
, int from_tty
,
759 struct cmd_list_element
*c
,
764 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
765 remote_open knows that we don't have a file open when the program
767 static struct serial
*remote_desc
= NULL
;
769 /* This variable sets the number of bits in an address that are to be
770 sent in a memory ("M" or "m") packet. Normally, after stripping
771 leading zeros, the entire address would be sent. This variable
772 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
773 initial implementation of remote.c restricted the address sent in
774 memory packets to ``host::sizeof long'' bytes - (typically 32
775 bits). Consequently, for 64 bit targets, the upper 32 bits of an
776 address was never sent. Since fixing this bug may cause a break in
777 some remote targets this variable is principly provided to
778 facilitate backward compatibility. */
780 static int remote_address_size
;
782 /* Temporary to track who currently owns the terminal. See
783 remote_terminal_* for more details. */
785 static int remote_async_terminal_ours_p
;
787 /* The executable file to use for "run" on the remote side. */
789 static char *remote_exec_file
= "";
792 /* User configurable variables for the number of characters in a
793 memory read/write packet. MIN (rsa->remote_packet_size,
794 rsa->sizeof_g_packet) is the default. Some targets need smaller
795 values (fifo overruns, et.al.) and some users need larger values
796 (speed up transfers). The variables ``preferred_*'' (the user
797 request), ``current_*'' (what was actually set) and ``forced_*''
798 (Positive - a soft limit, negative - a hard limit). */
800 struct memory_packet_config
807 /* Compute the current size of a read/write packet. Since this makes
808 use of ``actual_register_packet_size'' the computation is dynamic. */
811 get_memory_packet_size (struct memory_packet_config
*config
)
813 struct remote_state
*rs
= get_remote_state ();
814 struct remote_arch_state
*rsa
= get_remote_arch_state ();
816 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
817 law?) that some hosts don't cope very well with large alloca()
818 calls. Eventually the alloca() code will be replaced by calls to
819 xmalloc() and make_cleanups() allowing this restriction to either
820 be lifted or removed. */
821 #ifndef MAX_REMOTE_PACKET_SIZE
822 #define MAX_REMOTE_PACKET_SIZE 16384
824 /* NOTE: 20 ensures we can write at least one byte. */
825 #ifndef MIN_REMOTE_PACKET_SIZE
826 #define MIN_REMOTE_PACKET_SIZE 20
831 if (config
->size
<= 0)
832 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
834 what_they_get
= config
->size
;
838 what_they_get
= get_remote_packet_size ();
839 /* Limit the packet to the size specified by the user. */
841 && what_they_get
> config
->size
)
842 what_they_get
= config
->size
;
844 /* Limit it to the size of the targets ``g'' response unless we have
845 permission from the stub to use a larger packet size. */
846 if (rs
->explicit_packet_size
== 0
847 && rsa
->actual_register_packet_size
> 0
848 && what_they_get
> rsa
->actual_register_packet_size
)
849 what_they_get
= rsa
->actual_register_packet_size
;
851 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
852 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
853 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
854 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
856 /* Make sure there is room in the global buffer for this packet
857 (including its trailing NUL byte). */
858 if (rs
->buf_size
< what_they_get
+ 1)
860 rs
->buf_size
= 2 * what_they_get
;
861 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
864 return what_they_get
;
867 /* Update the size of a read/write packet. If they user wants
868 something really big then do a sanity check. */
871 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
873 int fixed_p
= config
->fixed_p
;
874 long size
= config
->size
;
877 error (_("Argument required (integer, `fixed' or `limited')."));
878 else if (strcmp (args
, "hard") == 0
879 || strcmp (args
, "fixed") == 0)
881 else if (strcmp (args
, "soft") == 0
882 || strcmp (args
, "limit") == 0)
888 size
= strtoul (args
, &end
, 0);
890 error (_("Invalid %s (bad syntax)."), config
->name
);
892 /* Instead of explicitly capping the size of a packet to
893 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
894 instead allowed to set the size to something arbitrarily
896 if (size
> MAX_REMOTE_PACKET_SIZE
)
897 error (_("Invalid %s (too large)."), config
->name
);
901 if (fixed_p
&& !config
->fixed_p
)
903 if (! query (_("The target may not be able to correctly handle a %s\n"
904 "of %ld bytes. Change the packet size? "),
906 error (_("Packet size not changed."));
908 /* Update the config. */
909 config
->fixed_p
= fixed_p
;
914 show_memory_packet_size (struct memory_packet_config
*config
)
916 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
918 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
919 get_memory_packet_size (config
));
921 printf_filtered (_("Packets are limited to %ld bytes.\n"),
922 get_memory_packet_size (config
));
925 static struct memory_packet_config memory_write_packet_config
=
927 "memory-write-packet-size",
931 set_memory_write_packet_size (char *args
, int from_tty
)
933 set_memory_packet_size (args
, &memory_write_packet_config
);
937 show_memory_write_packet_size (char *args
, int from_tty
)
939 show_memory_packet_size (&memory_write_packet_config
);
943 get_memory_write_packet_size (void)
945 return get_memory_packet_size (&memory_write_packet_config
);
948 static struct memory_packet_config memory_read_packet_config
=
950 "memory-read-packet-size",
954 set_memory_read_packet_size (char *args
, int from_tty
)
956 set_memory_packet_size (args
, &memory_read_packet_config
);
960 show_memory_read_packet_size (char *args
, int from_tty
)
962 show_memory_packet_size (&memory_read_packet_config
);
966 get_memory_read_packet_size (void)
968 long size
= get_memory_packet_size (&memory_read_packet_config
);
970 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
971 extra buffer size argument before the memory read size can be
972 increased beyond this. */
973 if (size
> get_remote_packet_size ())
974 size
= get_remote_packet_size ();
979 /* Generic configuration support for packets the stub optionally
980 supports. Allows the user to specify the use of the packet as well
981 as allowing GDB to auto-detect support in the remote stub. */
985 PACKET_SUPPORT_UNKNOWN
= 0,
994 enum auto_boolean detect
;
995 enum packet_support support
;
998 /* Analyze a packet's return value and update the packet config
1009 update_packet_config (struct packet_config
*config
)
1011 switch (config
->detect
)
1013 case AUTO_BOOLEAN_TRUE
:
1014 config
->support
= PACKET_ENABLE
;
1016 case AUTO_BOOLEAN_FALSE
:
1017 config
->support
= PACKET_DISABLE
;
1019 case AUTO_BOOLEAN_AUTO
:
1020 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1026 show_packet_config_cmd (struct packet_config
*config
)
1028 char *support
= "internal-error";
1030 switch (config
->support
)
1033 support
= "enabled";
1035 case PACKET_DISABLE
:
1036 support
= "disabled";
1038 case PACKET_SUPPORT_UNKNOWN
:
1039 support
= "unknown";
1042 switch (config
->detect
)
1044 case AUTO_BOOLEAN_AUTO
:
1045 printf_filtered (_("Support for the `%s' packet "
1046 "is auto-detected, currently %s.\n"),
1047 config
->name
, support
);
1049 case AUTO_BOOLEAN_TRUE
:
1050 case AUTO_BOOLEAN_FALSE
:
1051 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1052 config
->name
, support
);
1058 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1059 const char *title
, int legacy
)
1065 config
->name
= name
;
1066 config
->title
= title
;
1067 config
->detect
= AUTO_BOOLEAN_AUTO
;
1068 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1069 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1071 show_doc
= xstrprintf ("Show current use of remote "
1072 "protocol `%s' (%s) packet",
1074 /* set/show TITLE-packet {auto,on,off} */
1075 cmd_name
= xstrprintf ("%s-packet", title
);
1076 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1077 &config
->detect
, set_doc
,
1078 show_doc
, NULL
, /* help_doc */
1079 set_remote_protocol_packet_cmd
,
1080 show_remote_protocol_packet_cmd
,
1081 &remote_set_cmdlist
, &remote_show_cmdlist
);
1082 /* The command code copies the documentation strings. */
1085 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1090 legacy_name
= xstrprintf ("%s-packet", name
);
1091 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1092 &remote_set_cmdlist
);
1093 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1094 &remote_show_cmdlist
);
1098 static enum packet_result
1099 packet_check_result (const char *buf
)
1103 /* The stub recognized the packet request. Check that the
1104 operation succeeded. */
1106 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1108 /* "Enn" - definitly an error. */
1109 return PACKET_ERROR
;
1111 /* Always treat "E." as an error. This will be used for
1112 more verbose error messages, such as E.memtypes. */
1113 if (buf
[0] == 'E' && buf
[1] == '.')
1114 return PACKET_ERROR
;
1116 /* The packet may or may not be OK. Just assume it is. */
1120 /* The stub does not support the packet. */
1121 return PACKET_UNKNOWN
;
1124 static enum packet_result
1125 packet_ok (const char *buf
, struct packet_config
*config
)
1127 enum packet_result result
;
1129 result
= packet_check_result (buf
);
1134 /* The stub recognized the packet request. */
1135 switch (config
->support
)
1137 case PACKET_SUPPORT_UNKNOWN
:
1139 fprintf_unfiltered (gdb_stdlog
,
1140 "Packet %s (%s) is supported\n",
1141 config
->name
, config
->title
);
1142 config
->support
= PACKET_ENABLE
;
1144 case PACKET_DISABLE
:
1145 internal_error (__FILE__
, __LINE__
,
1146 _("packet_ok: attempt to use a disabled packet"));
1152 case PACKET_UNKNOWN
:
1153 /* The stub does not support the packet. */
1154 switch (config
->support
)
1157 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1158 /* If the stub previously indicated that the packet was
1159 supported then there is a protocol error.. */
1160 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1161 config
->name
, config
->title
);
1163 /* The user set it wrong. */
1164 error (_("Enabled packet %s (%s) not recognized by stub"),
1165 config
->name
, config
->title
);
1167 case PACKET_SUPPORT_UNKNOWN
:
1169 fprintf_unfiltered (gdb_stdlog
,
1170 "Packet %s (%s) is NOT supported\n",
1171 config
->name
, config
->title
);
1172 config
->support
= PACKET_DISABLE
;
1174 case PACKET_DISABLE
:
1196 PACKET_vFile_pwrite
,
1198 PACKET_vFile_unlink
,
1200 PACKET_qXfer_features
,
1201 PACKET_qXfer_libraries
,
1202 PACKET_qXfer_memory_map
,
1203 PACKET_qXfer_spu_read
,
1204 PACKET_qXfer_spu_write
,
1205 PACKET_qXfer_osdata
,
1206 PACKET_qXfer_threads
,
1207 PACKET_qXfer_statictrace_read
,
1211 PACKET_QPassSignals
,
1212 PACKET_qSearch_memory
,
1215 PACKET_QStartNoAckMode
,
1217 PACKET_qXfer_siginfo_read
,
1218 PACKET_qXfer_siginfo_write
,
1220 PACKET_ConditionalTracepoints
,
1221 PACKET_FastTracepoints
,
1222 PACKET_StaticTracepoints
,
1225 PACKET_TracepointSource
,
1230 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1233 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1234 struct cmd_list_element
*c
)
1236 struct packet_config
*packet
;
1238 for (packet
= remote_protocol_packets
;
1239 packet
< &remote_protocol_packets
[PACKET_MAX
];
1242 if (&packet
->detect
== c
->var
)
1244 update_packet_config (packet
);
1248 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1253 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1254 struct cmd_list_element
*c
,
1257 struct packet_config
*packet
;
1259 for (packet
= remote_protocol_packets
;
1260 packet
< &remote_protocol_packets
[PACKET_MAX
];
1263 if (&packet
->detect
== c
->var
)
1265 show_packet_config_cmd (packet
);
1269 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1273 /* Should we try one of the 'Z' requests? */
1277 Z_PACKET_SOFTWARE_BP
,
1278 Z_PACKET_HARDWARE_BP
,
1285 /* For compatibility with older distributions. Provide a ``set remote
1286 Z-packet ...'' command that updates all the Z packet types. */
1288 static enum auto_boolean remote_Z_packet_detect
;
1291 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1292 struct cmd_list_element
*c
)
1296 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1298 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1299 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1304 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1305 struct cmd_list_element
*c
,
1310 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1312 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1316 /* Should we try the 'ThreadInfo' query packet?
1318 This variable (NOT available to the user: auto-detect only!)
1319 determines whether GDB will use the new, simpler "ThreadInfo"
1320 query or the older, more complex syntax for thread queries.
1321 This is an auto-detect variable (set to true at each connect,
1322 and set to false when the target fails to recognize it). */
1324 static int use_threadinfo_query
;
1325 static int use_threadextra_query
;
1327 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1328 static struct async_signal_handler
*sigint_remote_twice_token
;
1329 static struct async_signal_handler
*sigint_remote_token
;
1332 /* Asynchronous signal handle registered as event loop source for
1333 when we have pending events ready to be passed to the core. */
1335 static struct async_event_handler
*remote_async_inferior_event_token
;
1337 /* Asynchronous signal handle registered as event loop source for when
1338 the remote sent us a %Stop notification. The registered callback
1339 will do a vStopped sequence to pull the rest of the events out of
1340 the remote side into our event queue. */
1342 static struct async_event_handler
*remote_async_get_pending_events_token
;
1345 static ptid_t magic_null_ptid
;
1346 static ptid_t not_sent_ptid
;
1347 static ptid_t any_thread_ptid
;
1349 /* These are the threads which we last sent to the remote system. The
1350 TID member will be -1 for all or -2 for not sent yet. */
1352 static ptid_t general_thread
;
1353 static ptid_t continue_thread
;
1355 /* Find out if the stub attached to PID (and hence GDB should offer to
1356 detach instead of killing it when bailing out). */
1359 remote_query_attached (int pid
)
1361 struct remote_state
*rs
= get_remote_state ();
1363 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1366 if (remote_multi_process_p (rs
))
1367 sprintf (rs
->buf
, "qAttached:%x", pid
);
1369 sprintf (rs
->buf
, "qAttached");
1372 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1374 switch (packet_ok (rs
->buf
,
1375 &remote_protocol_packets
[PACKET_qAttached
]))
1378 if (strcmp (rs
->buf
, "1") == 0)
1382 warning (_("Remote failure reply: %s"), rs
->buf
);
1384 case PACKET_UNKNOWN
:
1391 /* Add PID to GDB's inferior table. Since we can be connected to a
1392 remote system before before knowing about any inferior, mark the
1393 target with execution when we find the first inferior. If ATTACHED
1394 is 1, then we had just attached to this inferior. If it is 0, then
1395 we just created this inferior. If it is -1, then try querying the
1396 remote stub to find out if it had attached to the inferior or
1399 static struct inferior
*
1400 remote_add_inferior (int pid
, int attached
)
1402 struct inferior
*inf
;
1404 /* Check whether this process we're learning about is to be
1405 considered attached, or if is to be considered to have been
1406 spawned by the stub. */
1408 attached
= remote_query_attached (pid
);
1410 if (gdbarch_has_global_solist (target_gdbarch
))
1412 /* If the target shares code across all inferiors, then every
1413 attach adds a new inferior. */
1414 inf
= add_inferior (pid
);
1416 /* ... and every inferior is bound to the same program space.
1417 However, each inferior may still have its own address
1419 inf
->aspace
= maybe_new_address_space ();
1420 inf
->pspace
= current_program_space
;
1424 /* In the traditional debugging scenario, there's a 1-1 match
1425 between program/address spaces. We simply bind the inferior
1426 to the program space's address space. */
1427 inf
= current_inferior ();
1428 inferior_appeared (inf
, pid
);
1431 inf
->attach_flag
= attached
;
1436 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1437 according to RUNNING. */
1440 remote_add_thread (ptid_t ptid
, int running
)
1444 set_executing (ptid
, running
);
1445 set_running (ptid
, running
);
1448 /* Come here when we learn about a thread id from the remote target.
1449 It may be the first time we hear about such thread, so take the
1450 opportunity to add it to GDB's thread list. In case this is the
1451 first time we're noticing its corresponding inferior, add it to
1452 GDB's inferior list as well. */
1455 remote_notice_new_inferior (ptid_t currthread
, int running
)
1457 /* If this is a new thread, add it to GDB's thread list.
1458 If we leave it up to WFI to do this, bad things will happen. */
1460 if (in_thread_list (currthread
) && is_exited (currthread
))
1462 /* We're seeing an event on a thread id we knew had exited.
1463 This has to be a new thread reusing the old id. Add it. */
1464 remote_add_thread (currthread
, running
);
1468 if (!in_thread_list (currthread
))
1470 struct inferior
*inf
= NULL
;
1471 int pid
= ptid_get_pid (currthread
);
1473 if (ptid_is_pid (inferior_ptid
)
1474 && pid
== ptid_get_pid (inferior_ptid
))
1476 /* inferior_ptid has no thread member yet. This can happen
1477 with the vAttach -> remote_wait,"TAAthread:" path if the
1478 stub doesn't support qC. This is the first stop reported
1479 after an attach, so this is the main thread. Update the
1480 ptid in the thread list. */
1481 if (in_thread_list (pid_to_ptid (pid
)))
1482 thread_change_ptid (inferior_ptid
, currthread
);
1485 remote_add_thread (currthread
, running
);
1486 inferior_ptid
= currthread
;
1491 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1493 /* inferior_ptid is not set yet. This can happen with the
1494 vRun -> remote_wait,"TAAthread:" path if the stub
1495 doesn't support qC. This is the first stop reported
1496 after an attach, so this is the main thread. Update the
1497 ptid in the thread list. */
1498 thread_change_ptid (inferior_ptid
, currthread
);
1502 /* When connecting to a target remote, or to a target
1503 extended-remote which already was debugging an inferior, we
1504 may not know about it yet. Add it before adding its child
1505 thread, so notifications are emitted in a sensible order. */
1506 if (!in_inferior_list (ptid_get_pid (currthread
)))
1507 inf
= remote_add_inferior (ptid_get_pid (currthread
), -1);
1509 /* This is really a new thread. Add it. */
1510 remote_add_thread (currthread
, running
);
1512 /* If we found a new inferior, let the common code do whatever
1513 it needs to with it (e.g., read shared libraries, insert
1516 notice_new_inferior (currthread
, running
, 0);
1520 /* Return the private thread data, creating it if necessary. */
1522 struct private_thread_info
*
1523 demand_private_info (ptid_t ptid
)
1525 struct thread_info
*info
= find_thread_ptid (ptid
);
1531 info
->private = xmalloc (sizeof (*(info
->private)));
1532 info
->private_dtor
= free_private_thread_info
;
1533 info
->private->core
= -1;
1534 info
->private->extra
= 0;
1537 return info
->private;
1540 /* Call this function as a result of
1541 1) A halt indication (T packet) containing a thread id
1542 2) A direct query of currthread
1543 3) Successful execution of set thread */
1546 record_currthread (ptid_t currthread
)
1548 general_thread
= currthread
;
1551 static char *last_pass_packet
;
1553 /* If 'QPassSignals' is supported, tell the remote stub what signals
1554 it can simply pass through to the inferior without reporting. */
1557 remote_pass_signals (void)
1559 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1561 char *pass_packet
, *p
;
1562 int numsigs
= (int) TARGET_SIGNAL_LAST
;
1565 gdb_assert (numsigs
< 256);
1566 for (i
= 0; i
< numsigs
; i
++)
1568 if (signal_stop_state (i
) == 0
1569 && signal_print_state (i
) == 0
1570 && signal_pass_state (i
) == 1)
1573 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1574 strcpy (pass_packet
, "QPassSignals:");
1575 p
= pass_packet
+ strlen (pass_packet
);
1576 for (i
= 0; i
< numsigs
; i
++)
1578 if (signal_stop_state (i
) == 0
1579 && signal_print_state (i
) == 0
1580 && signal_pass_state (i
) == 1)
1583 *p
++ = tohex (i
>> 4);
1584 *p
++ = tohex (i
& 15);
1593 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1595 struct remote_state
*rs
= get_remote_state ();
1596 char *buf
= rs
->buf
;
1598 putpkt (pass_packet
);
1599 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1600 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1601 if (last_pass_packet
)
1602 xfree (last_pass_packet
);
1603 last_pass_packet
= pass_packet
;
1606 xfree (pass_packet
);
1611 remote_notice_signals (ptid_t ptid
)
1613 /* Update the remote on signals to silently pass, if they've
1615 remote_pass_signals ();
1618 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1619 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1620 thread. If GEN is set, set the general thread, if not, then set
1621 the step/continue thread. */
1623 set_thread (struct ptid ptid
, int gen
)
1625 struct remote_state
*rs
= get_remote_state ();
1626 ptid_t state
= gen
? general_thread
: continue_thread
;
1627 char *buf
= rs
->buf
;
1628 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1630 if (ptid_equal (state
, ptid
))
1634 *buf
++ = gen
? 'g' : 'c';
1635 if (ptid_equal (ptid
, magic_null_ptid
))
1636 xsnprintf (buf
, endbuf
- buf
, "0");
1637 else if (ptid_equal (ptid
, any_thread_ptid
))
1638 xsnprintf (buf
, endbuf
- buf
, "0");
1639 else if (ptid_equal (ptid
, minus_one_ptid
))
1640 xsnprintf (buf
, endbuf
- buf
, "-1");
1642 write_ptid (buf
, endbuf
, ptid
);
1644 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1646 general_thread
= ptid
;
1648 continue_thread
= ptid
;
1652 set_general_thread (struct ptid ptid
)
1654 set_thread (ptid
, 1);
1658 set_continue_thread (struct ptid ptid
)
1660 set_thread (ptid
, 0);
1663 /* Change the remote current process. Which thread within the process
1664 ends up selected isn't important, as long as it is the same process
1665 as what INFERIOR_PTID points to.
1667 This comes from that fact that there is no explicit notion of
1668 "selected process" in the protocol. The selected process for
1669 general operations is the process the selected general thread
1673 set_general_process (void)
1675 struct remote_state
*rs
= get_remote_state ();
1677 /* If the remote can't handle multiple processes, don't bother. */
1678 if (!remote_multi_process_p (rs
))
1681 /* We only need to change the remote current thread if it's pointing
1682 at some other process. */
1683 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1684 set_general_thread (inferior_ptid
);
1688 /* Return nonzero if the thread PTID is still alive on the remote
1692 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1694 struct remote_state
*rs
= get_remote_state ();
1697 if (ptid_equal (ptid
, magic_null_ptid
))
1698 /* The main thread is always alive. */
1701 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1702 /* The main thread is always alive. This can happen after a
1703 vAttach, if the remote side doesn't support
1708 endp
= rs
->buf
+ get_remote_packet_size ();
1711 write_ptid (p
, endp
, ptid
);
1714 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1715 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1718 /* About these extended threadlist and threadinfo packets. They are
1719 variable length packets but, the fields within them are often fixed
1720 length. They are redundent enough to send over UDP as is the
1721 remote protocol in general. There is a matching unit test module
1724 #define OPAQUETHREADBYTES 8
1726 /* a 64 bit opaque identifier */
1727 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1729 /* WARNING: This threadref data structure comes from the remote O.S.,
1730 libstub protocol encoding, and remote.c. It is not particularly
1733 /* Right now, the internal structure is int. We want it to be bigger.
1734 Plan to fix this. */
1736 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1738 /* gdb_ext_thread_info is an internal GDB data structure which is
1739 equivalent to the reply of the remote threadinfo packet. */
1741 struct gdb_ext_thread_info
1743 threadref threadid
; /* External form of thread reference. */
1744 int active
; /* Has state interesting to GDB?
1746 char display
[256]; /* Brief state display, name,
1747 blocked/suspended. */
1748 char shortname
[32]; /* To be used to name threads. */
1749 char more_display
[256]; /* Long info, statistics, queue depth,
1753 /* The volume of remote transfers can be limited by submitting
1754 a mask containing bits specifying the desired information.
1755 Use a union of these values as the 'selection' parameter to
1756 get_thread_info. FIXME: Make these TAG names more thread specific. */
1758 #define TAG_THREADID 1
1759 #define TAG_EXISTS 2
1760 #define TAG_DISPLAY 4
1761 #define TAG_THREADNAME 8
1762 #define TAG_MOREDISPLAY 16
1764 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1766 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1768 static char *unpack_nibble (char *buf
, int *val
);
1770 static char *pack_nibble (char *buf
, int nibble
);
1772 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1774 static char *unpack_byte (char *buf
, int *value
);
1776 static char *pack_int (char *buf
, int value
);
1778 static char *unpack_int (char *buf
, int *value
);
1780 static char *unpack_string (char *src
, char *dest
, int length
);
1782 static char *pack_threadid (char *pkt
, threadref
*id
);
1784 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1786 void int_to_threadref (threadref
*id
, int value
);
1788 static int threadref_to_int (threadref
*ref
);
1790 static void copy_threadref (threadref
*dest
, threadref
*src
);
1792 static int threadmatch (threadref
*dest
, threadref
*src
);
1794 static char *pack_threadinfo_request (char *pkt
, int mode
,
1797 static int remote_unpack_thread_info_response (char *pkt
,
1798 threadref
*expectedref
,
1799 struct gdb_ext_thread_info
1803 static int remote_get_threadinfo (threadref
*threadid
,
1804 int fieldset
, /*TAG mask */
1805 struct gdb_ext_thread_info
*info
);
1807 static char *pack_threadlist_request (char *pkt
, int startflag
,
1809 threadref
*nextthread
);
1811 static int parse_threadlist_response (char *pkt
,
1813 threadref
*original_echo
,
1814 threadref
*resultlist
,
1817 static int remote_get_threadlist (int startflag
,
1818 threadref
*nextthread
,
1822 threadref
*threadlist
);
1824 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1826 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1827 void *context
, int looplimit
);
1829 static int remote_newthread_step (threadref
*ref
, void *context
);
1832 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1833 buffer we're allowed to write to. Returns
1834 BUF+CHARACTERS_WRITTEN. */
1837 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1840 struct remote_state
*rs
= get_remote_state ();
1842 if (remote_multi_process_p (rs
))
1844 pid
= ptid_get_pid (ptid
);
1846 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1848 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1850 tid
= ptid_get_tid (ptid
);
1852 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1854 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1859 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1860 passed the last parsed char. Returns null_ptid on error. */
1863 read_ptid (char *buf
, char **obuf
)
1867 ULONGEST pid
= 0, tid
= 0;
1871 /* Multi-process ptid. */
1872 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1874 error (_("invalid remote ptid: %s\n"), p
);
1877 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1880 return ptid_build (pid
, 0, tid
);
1883 /* No multi-process. Just a tid. */
1884 pp
= unpack_varlen_hex (p
, &tid
);
1886 /* Since the stub is not sending a process id, then default to
1887 what's in inferior_ptid, unless it's null at this point. If so,
1888 then since there's no way to know the pid of the reported
1889 threads, use the magic number. */
1890 if (ptid_equal (inferior_ptid
, null_ptid
))
1891 pid
= ptid_get_pid (magic_null_ptid
);
1893 pid
= ptid_get_pid (inferior_ptid
);
1897 return ptid_build (pid
, 0, tid
);
1900 /* Encode 64 bits in 16 chars of hex. */
1902 static const char hexchars
[] = "0123456789abcdef";
1905 ishex (int ch
, int *val
)
1907 if ((ch
>= 'a') && (ch
<= 'f'))
1909 *val
= ch
- 'a' + 10;
1912 if ((ch
>= 'A') && (ch
<= 'F'))
1914 *val
= ch
- 'A' + 10;
1917 if ((ch
>= '0') && (ch
<= '9'))
1928 if (ch
>= 'a' && ch
<= 'f')
1929 return ch
- 'a' + 10;
1930 if (ch
>= '0' && ch
<= '9')
1932 if (ch
>= 'A' && ch
<= 'F')
1933 return ch
- 'A' + 10;
1938 stub_unpack_int (char *buff
, int fieldlength
)
1945 nibble
= stubhex (*buff
++);
1949 retval
= retval
<< 4;
1955 unpack_varlen_hex (char *buff
, /* packet to parse */
1959 ULONGEST retval
= 0;
1961 while (ishex (*buff
, &nibble
))
1964 retval
= retval
<< 4;
1965 retval
|= nibble
& 0x0f;
1972 unpack_nibble (char *buf
, int *val
)
1974 *val
= fromhex (*buf
++);
1979 pack_nibble (char *buf
, int nibble
)
1981 *buf
++ = hexchars
[(nibble
& 0x0f)];
1986 pack_hex_byte (char *pkt
, int byte
)
1988 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1989 *pkt
++ = hexchars
[(byte
& 0xf)];
1994 unpack_byte (char *buf
, int *value
)
1996 *value
= stub_unpack_int (buf
, 2);
2001 pack_int (char *buf
, int value
)
2003 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2004 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2005 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2006 buf
= pack_hex_byte (buf
, (value
& 0xff));
2011 unpack_int (char *buf
, int *value
)
2013 *value
= stub_unpack_int (buf
, 8);
2017 #if 0 /* Currently unused, uncomment when needed. */
2018 static char *pack_string (char *pkt
, char *string
);
2021 pack_string (char *pkt
, char *string
)
2026 len
= strlen (string
);
2028 len
= 200; /* Bigger than most GDB packets, junk??? */
2029 pkt
= pack_hex_byte (pkt
, len
);
2033 if ((ch
== '\0') || (ch
== '#'))
2034 ch
= '*'; /* Protect encapsulation. */
2039 #endif /* 0 (unused) */
2042 unpack_string (char *src
, char *dest
, int length
)
2051 pack_threadid (char *pkt
, threadref
*id
)
2054 unsigned char *altid
;
2056 altid
= (unsigned char *) id
;
2057 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2059 pkt
= pack_hex_byte (pkt
, *altid
++);
2065 unpack_threadid (char *inbuf
, threadref
*id
)
2068 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2071 altref
= (char *) id
;
2073 while (inbuf
< limit
)
2075 x
= stubhex (*inbuf
++);
2076 y
= stubhex (*inbuf
++);
2077 *altref
++ = (x
<< 4) | y
;
2082 /* Externally, threadrefs are 64 bits but internally, they are still
2083 ints. This is due to a mismatch of specifications. We would like
2084 to use 64bit thread references internally. This is an adapter
2088 int_to_threadref (threadref
*id
, int value
)
2090 unsigned char *scan
;
2092 scan
= (unsigned char *) id
;
2098 *scan
++ = (value
>> 24) & 0xff;
2099 *scan
++ = (value
>> 16) & 0xff;
2100 *scan
++ = (value
>> 8) & 0xff;
2101 *scan
++ = (value
& 0xff);
2105 threadref_to_int (threadref
*ref
)
2108 unsigned char *scan
;
2114 value
= (value
<< 8) | ((*scan
++) & 0xff);
2119 copy_threadref (threadref
*dest
, threadref
*src
)
2122 unsigned char *csrc
, *cdest
;
2124 csrc
= (unsigned char *) src
;
2125 cdest
= (unsigned char *) dest
;
2132 threadmatch (threadref
*dest
, threadref
*src
)
2134 /* Things are broken right now, so just assume we got a match. */
2136 unsigned char *srcp
, *destp
;
2138 srcp
= (char *) src
;
2139 destp
= (char *) dest
;
2143 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2150 threadid:1, # always request threadid
2157 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2160 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2162 *pkt
++ = 'q'; /* Info Query */
2163 *pkt
++ = 'P'; /* process or thread info */
2164 pkt
= pack_int (pkt
, mode
); /* mode */
2165 pkt
= pack_threadid (pkt
, id
); /* threadid */
2166 *pkt
= '\0'; /* terminate */
2170 /* These values tag the fields in a thread info response packet. */
2171 /* Tagging the fields allows us to request specific fields and to
2172 add more fields as time goes by. */
2174 #define TAG_THREADID 1 /* Echo the thread identifier. */
2175 #define TAG_EXISTS 2 /* Is this process defined enough to
2176 fetch registers and its stack? */
2177 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2178 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2179 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2183 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2184 struct gdb_ext_thread_info
*info
)
2186 struct remote_state
*rs
= get_remote_state ();
2190 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2193 /* info->threadid = 0; FIXME: implement zero_threadref. */
2195 info
->display
[0] = '\0';
2196 info
->shortname
[0] = '\0';
2197 info
->more_display
[0] = '\0';
2199 /* Assume the characters indicating the packet type have been
2201 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2202 pkt
= unpack_threadid (pkt
, &ref
);
2205 warning (_("Incomplete response to threadinfo request."));
2206 if (!threadmatch (&ref
, expectedref
))
2207 { /* This is an answer to a different request. */
2208 warning (_("ERROR RMT Thread info mismatch."));
2211 copy_threadref (&info
->threadid
, &ref
);
2213 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2215 /* Packets are terminated with nulls. */
2216 while ((pkt
< limit
) && mask
&& *pkt
)
2218 pkt
= unpack_int (pkt
, &tag
); /* tag */
2219 pkt
= unpack_byte (pkt
, &length
); /* length */
2220 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2222 warning (_("ERROR RMT: threadinfo tag mismatch."));
2226 if (tag
== TAG_THREADID
)
2230 warning (_("ERROR RMT: length of threadid is not 16."));
2234 pkt
= unpack_threadid (pkt
, &ref
);
2235 mask
= mask
& ~TAG_THREADID
;
2238 if (tag
== TAG_EXISTS
)
2240 info
->active
= stub_unpack_int (pkt
, length
);
2242 mask
= mask
& ~(TAG_EXISTS
);
2245 warning (_("ERROR RMT: 'exists' length too long."));
2251 if (tag
== TAG_THREADNAME
)
2253 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2254 mask
= mask
& ~TAG_THREADNAME
;
2257 if (tag
== TAG_DISPLAY
)
2259 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2260 mask
= mask
& ~TAG_DISPLAY
;
2263 if (tag
== TAG_MOREDISPLAY
)
2265 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2266 mask
= mask
& ~TAG_MOREDISPLAY
;
2269 warning (_("ERROR RMT: unknown thread info tag."));
2270 break; /* Not a tag we know about. */
2276 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2277 struct gdb_ext_thread_info
*info
)
2279 struct remote_state
*rs
= get_remote_state ();
2282 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2284 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2286 if (rs
->buf
[0] == '\0')
2289 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2294 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2297 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2298 threadref
*nextthread
)
2300 *pkt
++ = 'q'; /* info query packet */
2301 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2302 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2303 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2304 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2309 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2312 parse_threadlist_response (char *pkt
, int result_limit
,
2313 threadref
*original_echo
, threadref
*resultlist
,
2316 struct remote_state
*rs
= get_remote_state ();
2318 int count
, resultcount
, done
;
2321 /* Assume the 'q' and 'M chars have been stripped. */
2322 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2323 /* done parse past here */
2324 pkt
= unpack_byte (pkt
, &count
); /* count field */
2325 pkt
= unpack_nibble (pkt
, &done
);
2326 /* The first threadid is the argument threadid. */
2327 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2328 while ((count
-- > 0) && (pkt
< limit
))
2330 pkt
= unpack_threadid (pkt
, resultlist
++);
2331 if (resultcount
++ >= result_limit
)
2340 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2341 int *done
, int *result_count
, threadref
*threadlist
)
2343 struct remote_state
*rs
= get_remote_state ();
2344 static threadref echo_nextthread
;
2347 /* Trancate result limit to be smaller than the packet size. */
2348 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2349 >= get_remote_packet_size ())
2350 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2352 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2354 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2356 if (*rs
->buf
== '\0')
2360 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2363 if (!threadmatch (&echo_nextthread
, nextthread
))
2365 /* FIXME: This is a good reason to drop the packet. */
2366 /* Possably, there is a duplicate response. */
2368 retransmit immediatly - race conditions
2369 retransmit after timeout - yes
2371 wait for packet, then exit
2373 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2374 return 0; /* I choose simply exiting. */
2376 if (*result_count
<= 0)
2380 warning (_("RMT ERROR : failed to get remote thread list."));
2383 return result
; /* break; */
2385 if (*result_count
> result_limit
)
2388 warning (_("RMT ERROR: threadlist response longer than requested."));
2394 /* This is the interface between remote and threads, remotes upper
2397 /* remote_find_new_threads retrieves the thread list and for each
2398 thread in the list, looks up the thread in GDB's internal list,
2399 adding the thread if it does not already exist. This involves
2400 getting partial thread lists from the remote target so, polling the
2401 quit_flag is required. */
2404 /* About this many threadisds fit in a packet. */
2406 #define MAXTHREADLISTRESULTS 32
2409 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2412 int done
, i
, result_count
;
2416 static threadref nextthread
;
2417 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2422 if (loopcount
++ > looplimit
)
2425 warning (_("Remote fetch threadlist -infinite loop-."));
2428 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2429 &done
, &result_count
, resultthreadlist
))
2434 /* Clear for later iterations. */
2436 /* Setup to resume next batch of thread references, set nextthread. */
2437 if (result_count
>= 1)
2438 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2440 while (result_count
--)
2441 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2448 remote_newthread_step (threadref
*ref
, void *context
)
2450 int pid
= ptid_get_pid (inferior_ptid
);
2451 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2453 if (!in_thread_list (ptid
))
2455 return 1; /* continue iterator */
2458 #define CRAZY_MAX_THREADS 1000
2461 remote_current_thread (ptid_t oldpid
)
2463 struct remote_state
*rs
= get_remote_state ();
2466 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2467 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2468 return read_ptid (&rs
->buf
[2], NULL
);
2473 /* Find new threads for info threads command.
2474 * Original version, using John Metzler's thread protocol.
2478 remote_find_new_threads (void)
2480 remote_threadlist_iterator (remote_newthread_step
, 0,
2484 #if defined(HAVE_LIBEXPAT)
2486 typedef struct thread_item
2492 DEF_VEC_O(thread_item_t
);
2494 struct threads_parsing_context
2496 VEC (thread_item_t
) *items
;
2500 start_thread (struct gdb_xml_parser
*parser
,
2501 const struct gdb_xml_element
*element
,
2502 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2504 struct threads_parsing_context
*data
= user_data
;
2506 struct thread_item item
;
2508 struct gdb_xml_value
*attr
;
2510 id
= xml_find_attribute (attributes
, "id")->value
;
2511 item
.ptid
= read_ptid (id
, NULL
);
2513 attr
= xml_find_attribute (attributes
, "core");
2515 item
.core
= *(ULONGEST
*) attr
->value
;
2521 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2525 end_thread (struct gdb_xml_parser
*parser
,
2526 const struct gdb_xml_element
*element
,
2527 void *user_data
, const char *body_text
)
2529 struct threads_parsing_context
*data
= user_data
;
2531 if (body_text
&& *body_text
)
2532 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2535 const struct gdb_xml_attribute thread_attributes
[] = {
2536 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2537 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2538 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2541 const struct gdb_xml_element thread_children
[] = {
2542 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2545 const struct gdb_xml_element threads_children
[] = {
2546 { "thread", thread_attributes
, thread_children
,
2547 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2548 start_thread
, end_thread
},
2549 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2552 const struct gdb_xml_element threads_elements
[] = {
2553 { "threads", NULL
, threads_children
,
2554 GDB_XML_EF_NONE
, NULL
, NULL
},
2555 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2558 /* Discard the contents of the constructed thread info context. */
2561 clear_threads_parsing_context (void *p
)
2563 struct threads_parsing_context
*context
= p
;
2565 struct thread_item
*item
;
2567 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2568 xfree (item
->extra
);
2570 VEC_free (thread_item_t
, context
->items
);
2576 * Find all threads for info threads command.
2577 * Uses new thread protocol contributed by Cisco.
2578 * Falls back and attempts to use the older method (above)
2579 * if the target doesn't respond to the new method.
2583 remote_threads_info (struct target_ops
*ops
)
2585 struct remote_state
*rs
= get_remote_state ();
2589 if (remote_desc
== 0) /* paranoia */
2590 error (_("Command can only be used when connected to the remote target."));
2592 #if defined(HAVE_LIBEXPAT)
2593 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2595 char *xml
= target_read_stralloc (¤t_target
,
2596 TARGET_OBJECT_THREADS
, NULL
);
2598 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2602 struct threads_parsing_context context
;
2604 context
.items
= NULL
;
2605 make_cleanup (clear_threads_parsing_context
, &context
);
2607 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2608 threads_elements
, xml
, &context
) == 0)
2611 struct thread_item
*item
;
2614 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2617 if (!ptid_equal (item
->ptid
, null_ptid
))
2619 struct private_thread_info
*info
;
2620 /* In non-stop mode, we assume new found threads
2621 are running until proven otherwise with a
2622 stop reply. In all-stop, we can only get
2623 here if all threads are stopped. */
2624 int running
= non_stop
? 1 : 0;
2626 remote_notice_new_inferior (item
->ptid
, running
);
2628 info
= demand_private_info (item
->ptid
);
2629 info
->core
= item
->core
;
2630 info
->extra
= item
->extra
;
2637 do_cleanups (back_to
);
2642 if (use_threadinfo_query
)
2644 putpkt ("qfThreadInfo");
2645 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2647 if (bufp
[0] != '\0') /* q packet recognized */
2649 while (*bufp
++ == 'm') /* reply contains one or more TID */
2653 new_thread
= read_ptid (bufp
, &bufp
);
2654 if (!ptid_equal (new_thread
, null_ptid
))
2656 /* In non-stop mode, we assume new found threads
2657 are running until proven otherwise with a
2658 stop reply. In all-stop, we can only get
2659 here if all threads are stopped. */
2660 int running
= non_stop
? 1 : 0;
2662 remote_notice_new_inferior (new_thread
, running
);
2665 while (*bufp
++ == ','); /* comma-separated list */
2666 putpkt ("qsThreadInfo");
2667 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2674 /* Only qfThreadInfo is supported in non-stop mode. */
2678 /* Else fall back to old method based on jmetzler protocol. */
2679 use_threadinfo_query
= 0;
2680 remote_find_new_threads ();
2685 * Collect a descriptive string about the given thread.
2686 * The target may say anything it wants to about the thread
2687 * (typically info about its blocked / runnable state, name, etc.).
2688 * This string will appear in the info threads display.
2690 * Optional: targets are not required to implement this function.
2694 remote_threads_extra_info (struct thread_info
*tp
)
2696 struct remote_state
*rs
= get_remote_state ();
2700 struct gdb_ext_thread_info threadinfo
;
2701 static char display_buf
[100]; /* arbitrary... */
2702 int n
= 0; /* position in display_buf */
2704 if (remote_desc
== 0) /* paranoia */
2705 internal_error (__FILE__
, __LINE__
,
2706 _("remote_threads_extra_info"));
2708 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2709 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2710 /* This is the main thread which was added by GDB. The remote
2711 server doesn't know about it. */
2714 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2716 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2718 if (info
&& info
->private)
2719 return info
->private->extra
;
2724 if (use_threadextra_query
)
2727 char *endb
= rs
->buf
+ get_remote_packet_size ();
2729 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2731 write_ptid (b
, endb
, tp
->ptid
);
2734 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2735 if (rs
->buf
[0] != 0)
2737 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2738 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2739 display_buf
[result
] = '\0';
2744 /* If the above query fails, fall back to the old method. */
2745 use_threadextra_query
= 0;
2746 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2747 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2748 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2749 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2750 if (threadinfo
.active
)
2752 if (*threadinfo
.shortname
)
2753 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2754 " Name: %s,", threadinfo
.shortname
);
2755 if (*threadinfo
.display
)
2756 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2757 " State: %s,", threadinfo
.display
);
2758 if (*threadinfo
.more_display
)
2759 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2760 " Priority: %s", threadinfo
.more_display
);
2764 /* For purely cosmetic reasons, clear up trailing commas. */
2765 if (',' == display_buf
[n
-1])
2766 display_buf
[n
-1] = ' ';
2775 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2776 struct static_tracepoint_marker
*marker
)
2778 struct remote_state
*rs
= get_remote_state ();
2781 sprintf (p
, "qTSTMat:");
2783 p
+= hexnumstr (p
, addr
);
2785 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2789 error (_("Remote failure reply: %s"), p
);
2793 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2801 free_current_marker (void *arg
)
2803 struct static_tracepoint_marker
**marker_p
= arg
;
2805 if (*marker_p
!= NULL
)
2807 release_static_tracepoint_marker (*marker_p
);
2814 static VEC(static_tracepoint_marker_p
) *
2815 remote_static_tracepoint_markers_by_strid (const char *strid
)
2817 struct remote_state
*rs
= get_remote_state ();
2818 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2819 struct static_tracepoint_marker
*marker
= NULL
;
2820 struct cleanup
*old_chain
;
2823 /* Ask for a first packet of static tracepoint marker
2826 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2829 error (_("Remote failure reply: %s"), p
);
2831 old_chain
= make_cleanup (free_current_marker
, &marker
);
2836 marker
= XCNEW (struct static_tracepoint_marker
);
2840 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2842 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2844 VEC_safe_push (static_tracepoint_marker_p
,
2850 release_static_tracepoint_marker (marker
);
2851 memset (marker
, 0, sizeof (*marker
));
2854 while (*p
++ == ','); /* comma-separated list */
2855 /* Ask for another packet of static tracepoint definition. */
2857 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2861 do_cleanups (old_chain
);
2866 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2869 remote_get_ada_task_ptid (long lwp
, long thread
)
2871 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2875 /* Restart the remote side; this is an extended protocol operation. */
2878 extended_remote_restart (void)
2880 struct remote_state
*rs
= get_remote_state ();
2882 /* Send the restart command; for reasons I don't understand the
2883 remote side really expects a number after the "R". */
2884 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2887 remote_fileio_reset ();
2890 /* Clean up connection to a remote debugger. */
2893 remote_close (int quitting
)
2895 if (remote_desc
== NULL
)
2896 return; /* already closed */
2898 /* Make sure we leave stdin registered in the event loop, and we
2899 don't leave the async SIGINT signal handler installed. */
2900 remote_terminal_ours ();
2902 serial_close (remote_desc
);
2905 /* We don't have a connection to the remote stub anymore. Get rid
2906 of all the inferiors and their threads we were controlling. */
2907 discard_all_inferiors ();
2908 inferior_ptid
= null_ptid
;
2910 /* We're no longer interested in any of these events. */
2911 discard_pending_stop_replies (-1);
2913 if (remote_async_inferior_event_token
)
2914 delete_async_event_handler (&remote_async_inferior_event_token
);
2915 if (remote_async_get_pending_events_token
)
2916 delete_async_event_handler (&remote_async_get_pending_events_token
);
2919 /* Query the remote side for the text, data and bss offsets. */
2924 struct remote_state
*rs
= get_remote_state ();
2927 int lose
, num_segments
= 0, do_sections
, do_segments
;
2928 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2929 struct section_offsets
*offs
;
2930 struct symfile_segment_data
*data
;
2932 if (symfile_objfile
== NULL
)
2935 putpkt ("qOffsets");
2936 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2939 if (buf
[0] == '\000')
2940 return; /* Return silently. Stub doesn't support
2944 warning (_("Remote failure reply: %s"), buf
);
2948 /* Pick up each field in turn. This used to be done with scanf, but
2949 scanf will make trouble if CORE_ADDR size doesn't match
2950 conversion directives correctly. The following code will work
2951 with any size of CORE_ADDR. */
2952 text_addr
= data_addr
= bss_addr
= 0;
2956 if (strncmp (ptr
, "Text=", 5) == 0)
2959 /* Don't use strtol, could lose on big values. */
2960 while (*ptr
&& *ptr
!= ';')
2961 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2963 if (strncmp (ptr
, ";Data=", 6) == 0)
2966 while (*ptr
&& *ptr
!= ';')
2967 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2972 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
2975 while (*ptr
&& *ptr
!= ';')
2976 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
2978 if (bss_addr
!= data_addr
)
2979 warning (_("Target reported unsupported offsets: %s"), buf
);
2984 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
2987 /* Don't use strtol, could lose on big values. */
2988 while (*ptr
&& *ptr
!= ';')
2989 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2992 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
2995 while (*ptr
&& *ptr
!= ';')
2996 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3004 error (_("Malformed response to offset query, %s"), buf
);
3005 else if (*ptr
!= '\0')
3006 warning (_("Target reported unsupported offsets: %s"), buf
);
3008 offs
= ((struct section_offsets
*)
3009 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3010 memcpy (offs
, symfile_objfile
->section_offsets
,
3011 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3013 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3014 do_segments
= (data
!= NULL
);
3015 do_sections
= num_segments
== 0;
3017 if (num_segments
> 0)
3019 segments
[0] = text_addr
;
3020 segments
[1] = data_addr
;
3022 /* If we have two segments, we can still try to relocate everything
3023 by assuming that the .text and .data offsets apply to the whole
3024 text and data segments. Convert the offsets given in the packet
3025 to base addresses for symfile_map_offsets_to_segments. */
3026 else if (data
&& data
->num_segments
== 2)
3028 segments
[0] = data
->segment_bases
[0] + text_addr
;
3029 segments
[1] = data
->segment_bases
[1] + data_addr
;
3032 /* If the object file has only one segment, assume that it is text
3033 rather than data; main programs with no writable data are rare,
3034 but programs with no code are useless. Of course the code might
3035 have ended up in the data segment... to detect that we would need
3036 the permissions here. */
3037 else if (data
&& data
->num_segments
== 1)
3039 segments
[0] = data
->segment_bases
[0] + text_addr
;
3042 /* There's no way to relocate by segment. */
3048 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3049 offs
, num_segments
, segments
);
3051 if (ret
== 0 && !do_sections
)
3052 error (_("Can not handle qOffsets TextSeg "
3053 "response with this symbol file"));
3060 free_symfile_segment_data (data
);
3064 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3066 /* This is a temporary kludge to force data and bss to use the
3067 same offsets because that's what nlmconv does now. The real
3068 solution requires changes to the stub and remote.c that I
3069 don't have time to do right now. */
3071 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3072 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3075 objfile_relocate (symfile_objfile
, offs
);
3078 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3079 threads we know are stopped already. This is used during the
3080 initial remote connection in non-stop mode --- threads that are
3081 reported as already being stopped are left stopped. */
3084 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3086 /* If we have a stop reply for this thread, it must be stopped. */
3087 if (peek_stop_reply (thread
->ptid
))
3088 set_stop_requested (thread
->ptid
, 1);
3093 /* Stub for catch_exception. */
3095 struct start_remote_args
3099 /* The current target. */
3100 struct target_ops
*target
;
3102 /* Non-zero if this is an extended-remote target. */
3106 /* Send interrupt_sequence to remote target. */
3108 send_interrupt_sequence ()
3110 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3111 serial_write (remote_desc
, "\x03", 1);
3112 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3113 serial_send_break (remote_desc
);
3114 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3116 serial_send_break (remote_desc
);
3117 serial_write (remote_desc
, "g", 1);
3120 internal_error (__FILE__
, __LINE__
,
3121 _("Invalid value for interrupt_sequence_mode: %s."),
3122 interrupt_sequence_mode
);
3126 remote_start_remote (struct ui_out
*uiout
, void *opaque
)
3128 struct start_remote_args
*args
= opaque
;
3129 struct remote_state
*rs
= get_remote_state ();
3130 struct packet_config
*noack_config
;
3131 char *wait_status
= NULL
;
3133 immediate_quit
++; /* Allow user to interrupt it. */
3135 /* Ack any packet which the remote side has already sent. */
3136 serial_write (remote_desc
, "+", 1);
3138 if (interrupt_on_connect
)
3139 send_interrupt_sequence ();
3141 /* The first packet we send to the target is the optional "supported
3142 packets" request. If the target can answer this, it will tell us
3143 which later probes to skip. */
3144 remote_query_supported ();
3146 /* If the stub wants to get a QAllow, compose one and send it. */
3147 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3148 remote_set_permissions ();
3150 /* Next, we possibly activate noack mode.
3152 If the QStartNoAckMode packet configuration is set to AUTO,
3153 enable noack mode if the stub reported a wish for it with
3156 If set to TRUE, then enable noack mode even if the stub didn't
3157 report it in qSupported. If the stub doesn't reply OK, the
3158 session ends with an error.
3160 If FALSE, then don't activate noack mode, regardless of what the
3161 stub claimed should be the default with qSupported. */
3163 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3165 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3166 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3167 && noack_config
->support
== PACKET_ENABLE
))
3169 putpkt ("QStartNoAckMode");
3170 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3171 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3175 if (args
->extended_p
)
3177 /* Tell the remote that we are using the extended protocol. */
3179 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3182 /* Next, if the target can specify a description, read it. We do
3183 this before anything involving memory or registers. */
3184 target_find_description ();
3186 /* Next, now that we know something about the target, update the
3187 address spaces in the program spaces. */
3188 update_address_spaces ();
3190 /* On OSs where the list of libraries is global to all
3191 processes, we fetch them early. */
3192 if (gdbarch_has_global_solist (target_gdbarch
))
3193 solib_add (NULL
, args
->from_tty
, args
->target
, auto_solib_add
);
3197 if (!rs
->non_stop_aware
)
3198 error (_("Non-stop mode requested, but remote "
3199 "does not support non-stop"));
3201 putpkt ("QNonStop:1");
3202 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3204 if (strcmp (rs
->buf
, "OK") != 0)
3205 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3207 /* Find about threads and processes the stub is already
3208 controlling. We default to adding them in the running state.
3209 The '?' query below will then tell us about which threads are
3211 remote_threads_info (args
->target
);
3213 else if (rs
->non_stop_aware
)
3215 /* Don't assume that the stub can operate in all-stop mode.
3216 Request it explicitely. */
3217 putpkt ("QNonStop:0");
3218 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3220 if (strcmp (rs
->buf
, "OK") != 0)
3221 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3224 /* Check whether the target is running now. */
3226 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3230 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3232 if (!args
->extended_p
)
3233 error (_("The target is not running (try extended-remote?)"));
3235 /* We're connected, but not running. Drop out before we
3236 call start_remote. */
3241 /* Save the reply for later. */
3242 wait_status
= alloca (strlen (rs
->buf
) + 1);
3243 strcpy (wait_status
, rs
->buf
);
3246 /* Let the stub know that we want it to return the thread. */
3247 set_continue_thread (minus_one_ptid
);
3249 /* Without this, some commands which require an active target
3250 (such as kill) won't work. This variable serves (at least)
3251 double duty as both the pid of the target process (if it has
3252 such), and as a flag indicating that a target is active.
3253 These functions should be split out into seperate variables,
3254 especially since GDB will someday have a notion of debugging
3255 several processes. */
3256 inferior_ptid
= magic_null_ptid
;
3258 /* Now, if we have thread information, update inferior_ptid. */
3259 inferior_ptid
= remote_current_thread (inferior_ptid
);
3261 remote_add_inferior (ptid_get_pid (inferior_ptid
), -1);
3263 /* Always add the main thread. */
3264 add_thread_silent (inferior_ptid
);
3266 get_offsets (); /* Get text, data & bss offsets. */
3268 /* If we could not find a description using qXfer, and we know
3269 how to do it some other way, try again. This is not
3270 supported for non-stop; it could be, but it is tricky if
3271 there are no stopped threads when we connect. */
3272 if (remote_read_description_p (args
->target
)
3273 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3275 target_clear_description ();
3276 target_find_description ();
3279 /* Use the previously fetched status. */
3280 gdb_assert (wait_status
!= NULL
);
3281 strcpy (rs
->buf
, wait_status
);
3282 rs
->cached_wait_status
= 1;
3285 start_remote (args
->from_tty
); /* Initialize gdb process mechanisms. */
3289 /* Clear WFI global state. Do this before finding about new
3290 threads and inferiors, and setting the current inferior.
3291 Otherwise we would clear the proceed status of the current
3292 inferior when we want its stop_soon state to be preserved
3293 (see notice_new_inferior). */
3294 init_wait_for_inferior ();
3296 /* In non-stop, we will either get an "OK", meaning that there
3297 are no stopped threads at this time; or, a regular stop
3298 reply. In the latter case, there may be more than one thread
3299 stopped --- we pull them all out using the vStopped
3301 if (strcmp (rs
->buf
, "OK") != 0)
3303 struct stop_reply
*stop_reply
;
3304 struct cleanup
*old_chain
;
3306 stop_reply
= stop_reply_xmalloc ();
3307 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3309 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3310 discard_cleanups (old_chain
);
3312 /* get_pending_stop_replies acks this one, and gets the rest
3314 pending_stop_reply
= stop_reply
;
3315 remote_get_pending_stop_replies ();
3317 /* Make sure that threads that were stopped remain
3319 iterate_over_threads (set_stop_requested_callback
, NULL
);
3322 if (target_can_async_p ())
3323 target_async (inferior_event_handler
, 0);
3325 if (thread_count () == 0)
3327 if (!args
->extended_p
)
3328 error (_("The target is not running (try extended-remote?)"));
3330 /* We're connected, but not running. Drop out before we
3331 call start_remote. */
3335 /* Let the stub know that we want it to return the thread. */
3337 /* Force the stub to choose a thread. */
3338 set_general_thread (null_ptid
);
3341 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3342 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3343 error (_("remote didn't report the current thread in non-stop mode"));
3345 get_offsets (); /* Get text, data & bss offsets. */
3347 /* In non-stop mode, any cached wait status will be stored in
3348 the stop reply queue. */
3349 gdb_assert (wait_status
== NULL
);
3351 /* Update the remote on signals to silently pass, or more
3352 importantly, which to not ignore, in case a previous session
3353 had set some different set of signals to be ignored. */
3354 remote_pass_signals ();
3357 /* If we connected to a live target, do some additional setup. */
3358 if (target_has_execution
)
3360 if (exec_bfd
) /* No use without an exec file. */
3361 remote_check_symbols (symfile_objfile
);
3364 /* Possibly the target has been engaged in a trace run started
3365 previously; find out where things are at. */
3366 if (remote_get_trace_status (current_trace_status ()) != -1)
3368 struct uploaded_tp
*uploaded_tps
= NULL
;
3369 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3371 if (current_trace_status ()->running
)
3372 printf_filtered (_("Trace is already running on the target.\n"));
3374 /* Get trace state variables first, they may be checked when
3375 parsing uploaded commands. */
3377 remote_upload_trace_state_variables (&uploaded_tsvs
);
3379 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3381 remote_upload_tracepoints (&uploaded_tps
);
3383 merge_uploaded_tracepoints (&uploaded_tps
);
3386 /* If breakpoints are global, insert them now. */
3387 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3388 && breakpoints_always_inserted_mode ())
3389 insert_breakpoints ();
3392 /* Open a connection to a remote debugger.
3393 NAME is the filename used for communication. */
3396 remote_open (char *name
, int from_tty
)
3398 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3401 /* Open a connection to a remote debugger using the extended
3402 remote gdb protocol. NAME is the filename used for communication. */
3405 extended_remote_open (char *name
, int from_tty
)
3407 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3410 /* Generic code for opening a connection to a remote target. */
3413 init_all_packet_configs (void)
3417 for (i
= 0; i
< PACKET_MAX
; i
++)
3418 update_packet_config (&remote_protocol_packets
[i
]);
3421 /* Symbol look-up. */
3424 remote_check_symbols (struct objfile
*objfile
)
3426 struct remote_state
*rs
= get_remote_state ();
3427 char *msg
, *reply
, *tmp
;
3428 struct minimal_symbol
*sym
;
3431 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3434 /* Make sure the remote is pointing at the right process. */
3435 set_general_process ();
3437 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3438 because we need both at the same time. */
3439 msg
= alloca (get_remote_packet_size ());
3441 /* Invite target to request symbol lookups. */
3443 putpkt ("qSymbol::");
3444 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3445 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3448 while (strncmp (reply
, "qSymbol:", 8) == 0)
3451 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3453 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3455 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3458 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3459 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3461 /* If this is a function address, return the start of code
3462 instead of any data function descriptor. */
3463 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3467 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3468 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3472 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3477 static struct serial
*
3478 remote_serial_open (char *name
)
3480 static int udp_warning
= 0;
3482 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3483 of in ser-tcp.c, because it is the remote protocol assuming that the
3484 serial connection is reliable and not the serial connection promising
3486 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3488 warning (_("The remote protocol may be unreliable over UDP.\n"
3489 "Some events may be lost, rendering further debugging "
3494 return serial_open (name
);
3497 /* Inform the target of our permission settings. The permission flags
3498 work without this, but if the target knows the settings, it can do
3499 a couple things. First, it can add its own check, to catch cases
3500 that somehow manage to get by the permissions checks in target
3501 methods. Second, if the target is wired to disallow particular
3502 settings (for instance, a system in the field that is not set up to
3503 be able to stop at a breakpoint), it can object to any unavailable
3507 remote_set_permissions (void)
3509 struct remote_state
*rs
= get_remote_state ();
3511 sprintf (rs
->buf
, "QAllow:"
3512 "WriteReg:%x;WriteMem:%x;"
3513 "InsertBreak:%x;InsertTrace:%x;"
3514 "InsertFastTrace:%x;Stop:%x",
3515 may_write_registers
, may_write_memory
,
3516 may_insert_breakpoints
, may_insert_tracepoints
,
3517 may_insert_fast_tracepoints
, may_stop
);
3519 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3521 /* If the target didn't like the packet, warn the user. Do not try
3522 to undo the user's settings, that would just be maddening. */
3523 if (strcmp (rs
->buf
, "OK") != 0)
3524 warning ("Remote refused setting permissions with: %s", rs
->buf
);
3527 /* This type describes each known response to the qSupported
3529 struct protocol_feature
3531 /* The name of this protocol feature. */
3534 /* The default for this protocol feature. */
3535 enum packet_support default_support
;
3537 /* The function to call when this feature is reported, or after
3538 qSupported processing if the feature is not supported.
3539 The first argument points to this structure. The second
3540 argument indicates whether the packet requested support be
3541 enabled, disabled, or probed (or the default, if this function
3542 is being called at the end of processing and this feature was
3543 not reported). The third argument may be NULL; if not NULL, it
3544 is a NUL-terminated string taken from the packet following
3545 this feature's name and an equals sign. */
3546 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3549 /* The corresponding packet for this feature. Only used if
3550 FUNC is remote_supported_packet. */
3555 remote_supported_packet (const struct protocol_feature
*feature
,
3556 enum packet_support support
,
3557 const char *argument
)
3561 warning (_("Remote qSupported response supplied an unexpected value for"
3562 " \"%s\"."), feature
->name
);
3566 if (remote_protocol_packets
[feature
->packet
].support
3567 == PACKET_SUPPORT_UNKNOWN
)
3568 remote_protocol_packets
[feature
->packet
].support
= support
;
3572 remote_packet_size (const struct protocol_feature
*feature
,
3573 enum packet_support support
, const char *value
)
3575 struct remote_state
*rs
= get_remote_state ();
3580 if (support
!= PACKET_ENABLE
)
3583 if (value
== NULL
|| *value
== '\0')
3585 warning (_("Remote target reported \"%s\" without a size."),
3591 packet_size
= strtol (value
, &value_end
, 16);
3592 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3594 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3595 feature
->name
, value
);
3599 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3601 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3602 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3603 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3606 /* Record the new maximum packet size. */
3607 rs
->explicit_packet_size
= packet_size
;
3611 remote_multi_process_feature (const struct protocol_feature
*feature
,
3612 enum packet_support support
, const char *value
)
3614 struct remote_state
*rs
= get_remote_state ();
3616 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3620 remote_non_stop_feature (const struct protocol_feature
*feature
,
3621 enum packet_support support
, const char *value
)
3623 struct remote_state
*rs
= get_remote_state ();
3625 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3629 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3630 enum packet_support support
,
3633 struct remote_state
*rs
= get_remote_state ();
3635 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3639 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3640 enum packet_support support
,
3643 struct remote_state
*rs
= get_remote_state ();
3645 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3649 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3650 enum packet_support support
,
3653 struct remote_state
*rs
= get_remote_state ();
3655 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3659 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3660 enum packet_support support
,
3663 struct remote_state
*rs
= get_remote_state ();
3665 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3668 static struct protocol_feature remote_protocol_features
[] = {
3669 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3670 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3671 PACKET_qXfer_auxv
},
3672 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3673 PACKET_qXfer_features
},
3674 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3675 PACKET_qXfer_libraries
},
3676 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3677 PACKET_qXfer_memory_map
},
3678 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3679 PACKET_qXfer_spu_read
},
3680 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3681 PACKET_qXfer_spu_write
},
3682 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3683 PACKET_qXfer_osdata
},
3684 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3685 PACKET_qXfer_threads
},
3686 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3687 PACKET_QPassSignals
},
3688 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3689 PACKET_QStartNoAckMode
},
3690 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3691 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3692 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3693 PACKET_qXfer_siginfo_read
},
3694 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3695 PACKET_qXfer_siginfo_write
},
3696 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3697 PACKET_ConditionalTracepoints
},
3698 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3699 PACKET_FastTracepoints
},
3700 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3701 PACKET_StaticTracepoints
},
3702 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3704 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3706 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3708 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3709 PACKET_TracepointSource
},
3710 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3714 static char *remote_support_xml
;
3716 /* Register string appended to "xmlRegisters=" in qSupported query. */
3719 register_remote_support_xml (const char *xml
)
3721 #if defined(HAVE_LIBEXPAT)
3722 if (remote_support_xml
== NULL
)
3723 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3726 char *copy
= xstrdup (remote_support_xml
+ 13);
3727 char *p
= strtok (copy
, ",");
3731 if (strcmp (p
, xml
) == 0)
3738 while ((p
= strtok (NULL
, ",")) != NULL
);
3741 remote_support_xml
= reconcat (remote_support_xml
,
3742 remote_support_xml
, ",", xml
,
3749 remote_query_supported_append (char *msg
, const char *append
)
3752 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3754 return xstrdup (append
);
3758 remote_query_supported (void)
3760 struct remote_state
*rs
= get_remote_state ();
3763 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3765 /* The packet support flags are handled differently for this packet
3766 than for most others. We treat an error, a disabled packet, and
3767 an empty response identically: any features which must be reported
3768 to be used will be automatically disabled. An empty buffer
3769 accomplishes this, since that is also the representation for a list
3770 containing no features. */
3773 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3776 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
3779 q
= remote_query_supported_append (q
, "multiprocess+");
3781 if (remote_support_xml
)
3782 q
= remote_query_supported_append (q
, remote_support_xml
);
3784 q
= remote_query_supported_append (q
, "qRelocInsn+");
3786 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
3789 do_cleanups (old_chain
);
3791 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3793 /* If an error occured, warn, but do not return - just reset the
3794 buffer to empty and go on to disable features. */
3795 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3798 warning (_("Remote failure reply: %s"), rs
->buf
);
3803 memset (seen
, 0, sizeof (seen
));
3808 enum packet_support is_supported
;
3809 char *p
, *end
, *name_end
, *value
;
3811 /* First separate out this item from the rest of the packet. If
3812 there's another item after this, we overwrite the separator
3813 (terminated strings are much easier to work with). */
3815 end
= strchr (p
, ';');
3818 end
= p
+ strlen (p
);
3828 warning (_("empty item in \"qSupported\" response"));
3833 name_end
= strchr (p
, '=');
3836 /* This is a name=value entry. */
3837 is_supported
= PACKET_ENABLE
;
3838 value
= name_end
+ 1;
3847 is_supported
= PACKET_ENABLE
;
3851 is_supported
= PACKET_DISABLE
;
3855 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3859 warning (_("unrecognized item \"%s\" "
3860 "in \"qSupported\" response"), p
);
3866 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3867 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
3869 const struct protocol_feature
*feature
;
3872 feature
= &remote_protocol_features
[i
];
3873 feature
->func (feature
, is_supported
, value
);
3878 /* If we increased the packet size, make sure to increase the global
3879 buffer size also. We delay this until after parsing the entire
3880 qSupported packet, because this is the same buffer we were
3882 if (rs
->buf_size
< rs
->explicit_packet_size
)
3884 rs
->buf_size
= rs
->explicit_packet_size
;
3885 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
3888 /* Handle the defaults for unmentioned features. */
3889 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3892 const struct protocol_feature
*feature
;
3894 feature
= &remote_protocol_features
[i
];
3895 feature
->func (feature
, feature
->default_support
, NULL
);
3901 remote_open_1 (char *name
, int from_tty
,
3902 struct target_ops
*target
, int extended_p
)
3904 struct remote_state
*rs
= get_remote_state ();
3907 error (_("To open a remote debug connection, you need to specify what\n"
3908 "serial device is attached to the remote system\n"
3909 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
3911 /* See FIXME above. */
3912 if (!target_async_permitted
)
3913 wait_forever_enabled_p
= 1;
3915 /* If we're connected to a running target, target_preopen will kill it.
3916 But if we're connected to a target system with no running process,
3917 then we will still be connected when it returns. Ask this question
3918 first, before target_preopen has a chance to kill anything. */
3919 if (remote_desc
!= NULL
&& !have_inferiors ())
3922 || query (_("Already connected to a remote target. Disconnect? ")))
3925 error (_("Still connected."));
3928 target_preopen (from_tty
);
3930 unpush_target (target
);
3932 /* This time without a query. If we were connected to an
3933 extended-remote target and target_preopen killed the running
3934 process, we may still be connected. If we are starting "target
3935 remote" now, the extended-remote target will not have been
3936 removed by unpush_target. */
3937 if (remote_desc
!= NULL
&& !have_inferiors ())
3940 /* Make sure we send the passed signals list the next time we resume. */
3941 xfree (last_pass_packet
);
3942 last_pass_packet
= NULL
;
3944 remote_fileio_reset ();
3945 reopen_exec_file ();
3948 remote_desc
= remote_serial_open (name
);
3950 perror_with_name (name
);
3952 if (baud_rate
!= -1)
3954 if (serial_setbaudrate (remote_desc
, baud_rate
))
3956 /* The requested speed could not be set. Error out to
3957 top level after closing remote_desc. Take care to
3958 set remote_desc to NULL to avoid closing remote_desc
3960 serial_close (remote_desc
);
3962 perror_with_name (name
);
3966 serial_raw (remote_desc
);
3968 /* If there is something sitting in the buffer we might take it as a
3969 response to a command, which would be bad. */
3970 serial_flush_input (remote_desc
);
3974 puts_filtered ("Remote debugging using ");
3975 puts_filtered (name
);
3976 puts_filtered ("\n");
3978 push_target (target
); /* Switch to using remote target now. */
3980 /* Register extra event sources in the event loop. */
3981 remote_async_inferior_event_token
3982 = create_async_event_handler (remote_async_inferior_event_handler
,
3984 remote_async_get_pending_events_token
3985 = create_async_event_handler (remote_async_get_pending_events_handler
,
3988 /* Reset the target state; these things will be queried either by
3989 remote_query_supported or as they are needed. */
3990 init_all_packet_configs ();
3991 rs
->cached_wait_status
= 0;
3992 rs
->explicit_packet_size
= 0;
3994 rs
->multi_process_aware
= 0;
3995 rs
->extended
= extended_p
;
3996 rs
->non_stop_aware
= 0;
3997 rs
->waiting_for_stop_reply
= 0;
3998 rs
->ctrlc_pending_p
= 0;
4000 general_thread
= not_sent_ptid
;
4001 continue_thread
= not_sent_ptid
;
4003 /* Probe for ability to use "ThreadInfo" query, as required. */
4004 use_threadinfo_query
= 1;
4005 use_threadextra_query
= 1;
4007 if (target_async_permitted
)
4009 /* With this target we start out by owning the terminal. */
4010 remote_async_terminal_ours_p
= 1;
4012 /* FIXME: cagney/1999-09-23: During the initial connection it is
4013 assumed that the target is already ready and able to respond to
4014 requests. Unfortunately remote_start_remote() eventually calls
4015 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4016 around this. Eventually a mechanism that allows
4017 wait_for_inferior() to expect/get timeouts will be
4019 wait_forever_enabled_p
= 0;
4022 /* First delete any symbols previously loaded from shared libraries. */
4023 no_shared_libraries (NULL
, 0);
4026 init_thread_list ();
4028 /* Start the remote connection. If error() or QUIT, discard this
4029 target (we'd otherwise be in an inconsistent state) and then
4030 propogate the error on up the exception chain. This ensures that
4031 the caller doesn't stumble along blindly assuming that the
4032 function succeeded. The CLI doesn't have this problem but other
4033 UI's, such as MI do.
4035 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4036 this function should return an error indication letting the
4037 caller restore the previous state. Unfortunately the command
4038 ``target remote'' is directly wired to this function making that
4039 impossible. On a positive note, the CLI side of this problem has
4040 been fixed - the function set_cmd_context() makes it possible for
4041 all the ``target ....'' commands to share a common callback
4042 function. See cli-dump.c. */
4044 struct gdb_exception ex
;
4045 struct start_remote_args args
;
4047 args
.from_tty
= from_tty
;
4048 args
.target
= target
;
4049 args
.extended_p
= extended_p
;
4051 ex
= catch_exception (uiout
, remote_start_remote
, &args
, RETURN_MASK_ALL
);
4054 /* Pop the partially set up target - unless something else did
4055 already before throwing the exception. */
4056 if (remote_desc
!= NULL
)
4058 if (target_async_permitted
)
4059 wait_forever_enabled_p
= 1;
4060 throw_exception (ex
);
4064 if (target_async_permitted
)
4065 wait_forever_enabled_p
= 1;
4068 /* This takes a program previously attached to and detaches it. After
4069 this is done, GDB can be used to debug some other program. We
4070 better not have left any breakpoints in the target program or it'll
4071 die when it hits one. */
4074 remote_detach_1 (char *args
, int from_tty
, int extended
)
4076 int pid
= ptid_get_pid (inferior_ptid
);
4077 struct remote_state
*rs
= get_remote_state ();
4080 error (_("Argument given to \"detach\" when remotely debugging."));
4082 if (!target_has_execution
)
4083 error (_("No process to detach from."));
4085 /* Tell the remote target to detach. */
4086 if (remote_multi_process_p (rs
))
4087 sprintf (rs
->buf
, "D;%x", pid
);
4089 strcpy (rs
->buf
, "D");
4092 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4094 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4096 else if (rs
->buf
[0] == '\0')
4097 error (_("Remote doesn't know how to detach"));
4099 error (_("Can't detach process."));
4103 if (remote_multi_process_p (rs
))
4104 printf_filtered (_("Detached from remote %s.\n"),
4105 target_pid_to_str (pid_to_ptid (pid
)));
4109 puts_filtered (_("Detached from remote process.\n"));
4111 puts_filtered (_("Ending remote debugging.\n"));
4115 discard_pending_stop_replies (pid
);
4116 target_mourn_inferior ();
4120 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4122 remote_detach_1 (args
, from_tty
, 0);
4126 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4128 remote_detach_1 (args
, from_tty
, 1);
4131 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4134 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4137 error (_("Argument given to \"disconnect\" when remotely debugging."));
4139 /* Make sure we unpush even the extended remote targets; mourn
4140 won't do it. So call remote_mourn_1 directly instead of
4141 target_mourn_inferior. */
4142 remote_mourn_1 (target
);
4145 puts_filtered ("Ending remote debugging.\n");
4148 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4149 be chatty about it. */
4152 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4154 struct remote_state
*rs
= get_remote_state ();
4156 char *wait_status
= NULL
;
4158 pid
= parse_pid_to_attach (args
);
4160 /* Remote PID can be freely equal to getpid, do not check it here the same
4161 way as in other targets. */
4163 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4164 error (_("This target does not support attaching to a process"));
4166 sprintf (rs
->buf
, "vAttach;%x", pid
);
4168 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4170 if (packet_ok (rs
->buf
,
4171 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4174 printf_unfiltered (_("Attached to %s\n"),
4175 target_pid_to_str (pid_to_ptid (pid
)));
4179 /* Save the reply for later. */
4180 wait_status
= alloca (strlen (rs
->buf
) + 1);
4181 strcpy (wait_status
, rs
->buf
);
4183 else if (strcmp (rs
->buf
, "OK") != 0)
4184 error (_("Attaching to %s failed with: %s"),
4185 target_pid_to_str (pid_to_ptid (pid
)),
4188 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4189 error (_("This target does not support attaching to a process"));
4191 error (_("Attaching to %s failed"),
4192 target_pid_to_str (pid_to_ptid (pid
)));
4194 set_current_inferior (remote_add_inferior (pid
, 1));
4196 inferior_ptid
= pid_to_ptid (pid
);
4200 struct thread_info
*thread
;
4202 /* Get list of threads. */
4203 remote_threads_info (target
);
4205 thread
= first_thread_of_process (pid
);
4207 inferior_ptid
= thread
->ptid
;
4209 inferior_ptid
= pid_to_ptid (pid
);
4211 /* Invalidate our notion of the remote current thread. */
4212 record_currthread (minus_one_ptid
);
4216 /* Now, if we have thread information, update inferior_ptid. */
4217 inferior_ptid
= remote_current_thread (inferior_ptid
);
4219 /* Add the main thread to the thread list. */
4220 add_thread_silent (inferior_ptid
);
4223 /* Next, if the target can specify a description, read it. We do
4224 this before anything involving memory or registers. */
4225 target_find_description ();
4229 /* Use the previously fetched status. */
4230 gdb_assert (wait_status
!= NULL
);
4232 if (target_can_async_p ())
4234 struct stop_reply
*stop_reply
;
4235 struct cleanup
*old_chain
;
4237 stop_reply
= stop_reply_xmalloc ();
4238 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4239 remote_parse_stop_reply (wait_status
, stop_reply
);
4240 discard_cleanups (old_chain
);
4241 push_stop_reply (stop_reply
);
4243 target_async (inferior_event_handler
, 0);
4247 gdb_assert (wait_status
!= NULL
);
4248 strcpy (rs
->buf
, wait_status
);
4249 rs
->cached_wait_status
= 1;
4253 gdb_assert (wait_status
== NULL
);
4257 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4259 extended_remote_attach_1 (ops
, args
, from_tty
);
4262 /* Convert hex digit A to a number. */
4267 if (a
>= '0' && a
<= '9')
4269 else if (a
>= 'a' && a
<= 'f')
4270 return a
- 'a' + 10;
4271 else if (a
>= 'A' && a
<= 'F')
4272 return a
- 'A' + 10;
4274 error (_("Reply contains invalid hex digit %d"), a
);
4278 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4282 for (i
= 0; i
< count
; i
++)
4284 if (hex
[0] == 0 || hex
[1] == 0)
4286 /* Hex string is short, or of uneven length.
4287 Return the count that has been converted so far. */
4290 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4296 /* Convert number NIB to a hex digit. */
4304 return 'a' + nib
- 10;
4308 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4312 /* May use a length, or a nul-terminated string as input. */
4314 count
= strlen ((char *) bin
);
4316 for (i
= 0; i
< count
; i
++)
4318 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4319 *hex
++ = tohex (*bin
++ & 0xf);
4325 /* Check for the availability of vCont. This function should also check
4329 remote_vcont_probe (struct remote_state
*rs
)
4333 strcpy (rs
->buf
, "vCont?");
4335 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4338 /* Make sure that the features we assume are supported. */
4339 if (strncmp (buf
, "vCont", 5) == 0)
4342 int support_s
, support_S
, support_c
, support_C
;
4348 rs
->support_vCont_t
= 0;
4349 while (p
&& *p
== ';')
4352 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4354 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4356 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4358 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4360 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4361 rs
->support_vCont_t
= 1;
4363 p
= strchr (p
, ';');
4366 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4367 BUF will make packet_ok disable the packet. */
4368 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4372 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4375 /* Helper function for building "vCont" resumptions. Write a
4376 resumption to P. ENDP points to one-passed-the-end of the buffer
4377 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4378 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4379 resumed thread should be single-stepped and/or signalled. If PTID
4380 equals minus_one_ptid, then all threads are resumed; if PTID
4381 represents a process, then all threads of the process are resumed;
4382 the thread to be stepped and/or signalled is given in the global
4386 append_resumption (char *p
, char *endp
,
4387 ptid_t ptid
, int step
, enum target_signal siggnal
)
4389 struct remote_state
*rs
= get_remote_state ();
4391 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
4392 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4394 p
+= xsnprintf (p
, endp
- p
, ";s");
4395 else if (siggnal
!= TARGET_SIGNAL_0
)
4396 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4398 p
+= xsnprintf (p
, endp
- p
, ";c");
4400 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4404 /* All (-1) threads of process. */
4405 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4407 p
+= xsnprintf (p
, endp
- p
, ":");
4408 p
= write_ptid (p
, endp
, nptid
);
4410 else if (!ptid_equal (ptid
, minus_one_ptid
))
4412 p
+= xsnprintf (p
, endp
- p
, ":");
4413 p
= write_ptid (p
, endp
, ptid
);
4419 /* Resume the remote inferior by using a "vCont" packet. The thread
4420 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4421 resumed thread should be single-stepped and/or signalled. If PTID
4422 equals minus_one_ptid, then all threads are resumed; the thread to
4423 be stepped and/or signalled is given in the global INFERIOR_PTID.
4424 This function returns non-zero iff it resumes the inferior.
4426 This function issues a strict subset of all possible vCont commands at the
4430 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
4432 struct remote_state
*rs
= get_remote_state ();
4436 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4437 remote_vcont_probe (rs
);
4439 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4443 endp
= rs
->buf
+ get_remote_packet_size ();
4445 /* If we could generate a wider range of packets, we'd have to worry
4446 about overflowing BUF. Should there be a generic
4447 "multi-part-packet" packet? */
4449 p
+= xsnprintf (p
, endp
- p
, "vCont");
4451 if (ptid_equal (ptid
, magic_null_ptid
))
4453 /* MAGIC_NULL_PTID means that we don't have any active threads,
4454 so we don't have any TID numbers the inferior will
4455 understand. Make sure to only send forms that do not specify
4457 p
= append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4459 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4461 /* Resume all threads (of all processes, or of a single
4462 process), with preference for INFERIOR_PTID. This assumes
4463 inferior_ptid belongs to the set of all threads we are about
4465 if (step
|| siggnal
!= TARGET_SIGNAL_0
)
4467 /* Step inferior_ptid, with or without signal. */
4468 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4471 /* And continue others without a signal. */
4472 p
= append_resumption (p
, endp
, ptid
, /*step=*/ 0, TARGET_SIGNAL_0
);
4476 /* Scheduler locking; resume only PTID. */
4477 p
= append_resumption (p
, endp
, ptid
, step
, siggnal
);
4480 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4485 /* In non-stop, the stub replies to vCont with "OK". The stop
4486 reply will be reported asynchronously by means of a `%Stop'
4488 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4489 if (strcmp (rs
->buf
, "OK") != 0)
4490 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4496 /* Tell the remote machine to resume. */
4498 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
4500 static int last_sent_step
;
4503 remote_resume (struct target_ops
*ops
,
4504 ptid_t ptid
, int step
, enum target_signal siggnal
)
4506 struct remote_state
*rs
= get_remote_state ();
4509 last_sent_signal
= siggnal
;
4510 last_sent_step
= step
;
4512 /* Update the inferior on signals to silently pass, if they've changed. */
4513 remote_pass_signals ();
4515 /* The vCont packet doesn't need to specify threads via Hc. */
4516 /* No reverse support (yet) for vCont. */
4517 if (execution_direction
!= EXEC_REVERSE
)
4518 if (remote_vcont_resume (ptid
, step
, siggnal
))
4521 /* All other supported resume packets do use Hc, so set the continue
4523 if (ptid_equal (ptid
, minus_one_ptid
))
4524 set_continue_thread (any_thread_ptid
);
4526 set_continue_thread (ptid
);
4529 if (execution_direction
== EXEC_REVERSE
)
4531 /* We don't pass signals to the target in reverse exec mode. */
4532 if (info_verbose
&& siggnal
!= TARGET_SIGNAL_0
)
4533 warning (" - Can't pass signal %d to target in reverse: ignored.\n",
4537 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4538 error (_("Remote reverse-step not supported."));
4540 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4541 error (_("Remote reverse-continue not supported."));
4543 strcpy (buf
, step
? "bs" : "bc");
4545 else if (siggnal
!= TARGET_SIGNAL_0
)
4547 buf
[0] = step
? 'S' : 'C';
4548 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4549 buf
[2] = tohex (((int) siggnal
) & 0xf);
4553 strcpy (buf
, step
? "s" : "c");
4558 /* We are about to start executing the inferior, let's register it
4559 with the event loop. NOTE: this is the one place where all the
4560 execution commands end up. We could alternatively do this in each
4561 of the execution commands in infcmd.c. */
4562 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4563 into infcmd.c in order to allow inferior function calls to work
4564 NOT asynchronously. */
4565 if (target_can_async_p ())
4566 target_async (inferior_event_handler
, 0);
4568 /* We've just told the target to resume. The remote server will
4569 wait for the inferior to stop, and then send a stop reply. In
4570 the mean time, we can't start another command/query ourselves
4571 because the stub wouldn't be ready to process it. This applies
4572 only to the base all-stop protocol, however. In non-stop (which
4573 only supports vCont), the stub replies with an "OK", and is
4574 immediate able to process further serial input. */
4576 rs
->waiting_for_stop_reply
= 1;
4580 /* Set up the signal handler for SIGINT, while the target is
4581 executing, ovewriting the 'regular' SIGINT signal handler. */
4583 initialize_sigint_signal_handler (void)
4585 signal (SIGINT
, handle_remote_sigint
);
4588 /* Signal handler for SIGINT, while the target is executing. */
4590 handle_remote_sigint (int sig
)
4592 signal (sig
, handle_remote_sigint_twice
);
4593 mark_async_signal_handler_wrapper (sigint_remote_token
);
4596 /* Signal handler for SIGINT, installed after SIGINT has already been
4597 sent once. It will take effect the second time that the user sends
4600 handle_remote_sigint_twice (int sig
)
4602 signal (sig
, handle_remote_sigint
);
4603 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4606 /* Perform the real interruption of the target execution, in response
4609 async_remote_interrupt (gdb_client_data arg
)
4612 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
4614 target_stop (inferior_ptid
);
4617 /* Perform interrupt, if the first attempt did not succeed. Just give
4618 up on the target alltogether. */
4620 async_remote_interrupt_twice (gdb_client_data arg
)
4623 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
4628 /* Reinstall the usual SIGINT handlers, after the target has
4631 cleanup_sigint_signal_handler (void *dummy
)
4633 signal (SIGINT
, handle_sigint
);
4636 /* Send ^C to target to halt it. Target will respond, and send us a
4638 static void (*ofunc
) (int);
4640 /* The command line interface's stop routine. This function is installed
4641 as a signal handler for SIGINT. The first time a user requests a
4642 stop, we call remote_stop to send a break or ^C. If there is no
4643 response from the target (it didn't stop when the user requested it),
4644 we ask the user if he'd like to detach from the target. */
4646 remote_interrupt (int signo
)
4648 /* If this doesn't work, try more severe steps. */
4649 signal (signo
, remote_interrupt_twice
);
4651 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4654 /* The user typed ^C twice. */
4657 remote_interrupt_twice (int signo
)
4659 signal (signo
, ofunc
);
4660 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4661 signal (signo
, remote_interrupt
);
4664 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4665 thread, all threads of a remote process, or all threads of all
4669 remote_stop_ns (ptid_t ptid
)
4671 struct remote_state
*rs
= get_remote_state ();
4673 char *endp
= rs
->buf
+ get_remote_packet_size ();
4675 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4676 remote_vcont_probe (rs
);
4678 if (!rs
->support_vCont_t
)
4679 error (_("Remote server does not support stopping threads"));
4681 if (ptid_equal (ptid
, minus_one_ptid
)
4682 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4683 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4688 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4690 if (ptid_is_pid (ptid
))
4691 /* All (-1) threads of process. */
4692 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4695 /* Small optimization: if we already have a stop reply for
4696 this thread, no use in telling the stub we want this
4698 if (peek_stop_reply (ptid
))
4704 p
= write_ptid (p
, endp
, nptid
);
4707 /* In non-stop, we get an immediate OK reply. The stop reply will
4708 come in asynchronously by notification. */
4710 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4711 if (strcmp (rs
->buf
, "OK") != 0)
4712 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4715 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4716 remote target. It is undefined which thread of which process
4717 reports the stop. */
4720 remote_stop_as (ptid_t ptid
)
4722 struct remote_state
*rs
= get_remote_state ();
4724 rs
->ctrlc_pending_p
= 1;
4726 /* If the inferior is stopped already, but the core didn't know
4727 about it yet, just ignore the request. The cached wait status
4728 will be collected in remote_wait. */
4729 if (rs
->cached_wait_status
)
4732 /* Send interrupt_sequence to remote target. */
4733 send_interrupt_sequence ();
4736 /* This is the generic stop called via the target vector. When a target
4737 interrupt is requested, either by the command line or the GUI, we
4738 will eventually end up here. */
4741 remote_stop (ptid_t ptid
)
4744 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4747 remote_stop_ns (ptid
);
4749 remote_stop_as (ptid
);
4752 /* Ask the user what to do when an interrupt is received. */
4755 interrupt_query (void)
4757 target_terminal_ours ();
4759 if (target_can_async_p ())
4761 signal (SIGINT
, handle_sigint
);
4762 deprecated_throw_reason (RETURN_QUIT
);
4766 if (query (_("Interrupted while waiting for the program.\n\
4767 Give up (and stop debugging it)? ")))
4770 deprecated_throw_reason (RETURN_QUIT
);
4774 target_terminal_inferior ();
4777 /* Enable/disable target terminal ownership. Most targets can use
4778 terminal groups to control terminal ownership. Remote targets are
4779 different in that explicit transfer of ownership to/from GDB/target
4783 remote_terminal_inferior (void)
4785 if (!target_async_permitted
)
4786 /* Nothing to do. */
4789 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4790 idempotent. The event-loop GDB talking to an asynchronous target
4791 with a synchronous command calls this function from both
4792 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4793 transfer the terminal to the target when it shouldn't this guard
4795 if (!remote_async_terminal_ours_p
)
4797 delete_file_handler (input_fd
);
4798 remote_async_terminal_ours_p
= 0;
4799 initialize_sigint_signal_handler ();
4800 /* NOTE: At this point we could also register our selves as the
4801 recipient of all input. Any characters typed could then be
4802 passed on down to the target. */
4806 remote_terminal_ours (void)
4808 if (!target_async_permitted
)
4809 /* Nothing to do. */
4812 /* See FIXME in remote_terminal_inferior. */
4813 if (remote_async_terminal_ours_p
)
4815 cleanup_sigint_signal_handler (NULL
);
4816 add_file_handler (input_fd
, stdin_event_handler
, 0);
4817 remote_async_terminal_ours_p
= 1;
4821 remote_console_output (char *msg
)
4825 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
4828 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
4832 fputs_unfiltered (tb
, gdb_stdtarg
);
4834 gdb_flush (gdb_stdtarg
);
4837 typedef struct cached_reg
4840 gdb_byte data
[MAX_REGISTER_SIZE
];
4843 DEF_VEC_O(cached_reg_t
);
4847 struct stop_reply
*next
;
4851 struct target_waitstatus ws
;
4853 VEC(cached_reg_t
) *regcache
;
4855 int stopped_by_watchpoint_p
;
4856 CORE_ADDR watch_data_address
;
4864 /* The list of already fetched and acknowledged stop events. */
4865 static struct stop_reply
*stop_reply_queue
;
4867 static struct stop_reply
*
4868 stop_reply_xmalloc (void)
4870 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
4877 stop_reply_xfree (struct stop_reply
*r
)
4881 VEC_free (cached_reg_t
, r
->regcache
);
4886 /* Discard all pending stop replies of inferior PID. If PID is -1,
4887 discard everything. */
4890 discard_pending_stop_replies (int pid
)
4892 struct stop_reply
*prev
= NULL
, *reply
, *next
;
4894 /* Discard the in-flight notification. */
4895 if (pending_stop_reply
!= NULL
4897 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
4899 stop_reply_xfree (pending_stop_reply
);
4900 pending_stop_reply
= NULL
;
4903 /* Discard the stop replies we have already pulled with
4905 for (reply
= stop_reply_queue
; reply
; reply
= next
)
4909 || ptid_get_pid (reply
->ptid
) == pid
)
4911 if (reply
== stop_reply_queue
)
4912 stop_reply_queue
= reply
->next
;
4914 prev
->next
= reply
->next
;
4916 stop_reply_xfree (reply
);
4923 /* Cleanup wrapper. */
4926 do_stop_reply_xfree (void *arg
)
4928 struct stop_reply
*r
= arg
;
4930 stop_reply_xfree (r
);
4933 /* Look for a queued stop reply belonging to PTID. If one is found,
4934 remove it from the queue, and return it. Returns NULL if none is
4935 found. If there are still queued events left to process, tell the
4936 event loop to get back to target_wait soon. */
4938 static struct stop_reply
*
4939 queued_stop_reply (ptid_t ptid
)
4941 struct stop_reply
*it
;
4942 struct stop_reply
**it_link
;
4944 it
= stop_reply_queue
;
4945 it_link
= &stop_reply_queue
;
4948 if (ptid_match (it
->ptid
, ptid
))
4950 *it_link
= it
->next
;
4955 it_link
= &it
->next
;
4959 if (stop_reply_queue
)
4960 /* There's still at least an event left. */
4961 mark_async_event_handler (remote_async_inferior_event_token
);
4966 /* Push a fully parsed stop reply in the stop reply queue. Since we
4967 know that we now have at least one queued event left to pass to the
4968 core side, tell the event loop to get back to target_wait soon. */
4971 push_stop_reply (struct stop_reply
*new_event
)
4973 struct stop_reply
*event
;
4975 if (stop_reply_queue
)
4977 for (event
= stop_reply_queue
;
4978 event
&& event
->next
;
4979 event
= event
->next
)
4982 event
->next
= new_event
;
4985 stop_reply_queue
= new_event
;
4987 mark_async_event_handler (remote_async_inferior_event_token
);
4990 /* Returns true if we have a stop reply for PTID. */
4993 peek_stop_reply (ptid_t ptid
)
4995 struct stop_reply
*it
;
4997 for (it
= stop_reply_queue
; it
; it
= it
->next
)
4998 if (ptid_equal (ptid
, it
->ptid
))
5000 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
5007 /* Parse the stop reply in BUF. Either the function succeeds, and the
5008 result is stored in EVENT, or throws an error. */
5011 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5013 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5017 event
->ptid
= null_ptid
;
5018 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5019 event
->ws
.value
.integer
= 0;
5020 event
->solibs_changed
= 0;
5021 event
->replay_event
= 0;
5022 event
->stopped_by_watchpoint_p
= 0;
5023 event
->regcache
= NULL
;
5028 case 'T': /* Status with PC, SP, FP, ... */
5029 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5030 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5032 n... = register number
5033 r... = register contents
5036 p
= &buf
[3]; /* after Txx */
5044 /* If the packet contains a register number, save it in
5045 pnum and set p1 to point to the character following it.
5046 Otherwise p1 points to p. */
5048 /* If this packet is an awatch packet, don't parse the 'a'
5049 as a register number. */
5051 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5052 && strncmp (p
, "core", strlen ("core") != 0))
5054 /* Read the ``P'' register number. */
5055 pnum
= strtol (p
, &p_temp
, 16);
5061 if (p1
== p
) /* No register number present here. */
5063 p1
= strchr (p
, ':');
5065 error (_("Malformed packet(a) (missing colon): %s\n\
5068 if (strncmp (p
, "thread", p1
- p
) == 0)
5069 event
->ptid
= read_ptid (++p1
, &p
);
5070 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5071 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5072 || (strncmp (p
, "awatch", p1
- p
) == 0))
5074 event
->stopped_by_watchpoint_p
= 1;
5075 p
= unpack_varlen_hex (++p1
, &addr
);
5076 event
->watch_data_address
= (CORE_ADDR
) addr
;
5078 else if (strncmp (p
, "library", p1
- p
) == 0)
5082 while (*p_temp
&& *p_temp
!= ';')
5085 event
->solibs_changed
= 1;
5088 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5090 /* NO_HISTORY event.
5091 p1 will indicate "begin" or "end", but
5092 it makes no difference for now, so ignore it. */
5093 event
->replay_event
= 1;
5094 p_temp
= strchr (p1
+ 1, ';');
5098 else if (strncmp (p
, "core", p1
- p
) == 0)
5102 p
= unpack_varlen_hex (++p1
, &c
);
5107 /* Silently skip unknown optional info. */
5108 p_temp
= strchr (p1
+ 1, ';');
5115 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5116 cached_reg_t cached_reg
;
5121 error (_("Malformed packet(b) (missing colon): %s\n\
5127 error (_("Remote sent bad register number %s: %s\n\
5129 hex_string (pnum
), p
, buf
);
5131 cached_reg
.num
= reg
->regnum
;
5133 fieldsize
= hex2bin (p
, cached_reg
.data
,
5134 register_size (target_gdbarch
,
5137 if (fieldsize
< register_size (target_gdbarch
,
5139 warning (_("Remote reply is too short: %s"), buf
);
5141 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5145 error (_("Remote register badly formatted: %s\nhere: %s"),
5150 case 'S': /* Old style status, just signal only. */
5151 if (event
->solibs_changed
)
5152 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5153 else if (event
->replay_event
)
5154 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5157 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5158 event
->ws
.value
.sig
= (enum target_signal
)
5159 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5162 case 'W': /* Target exited. */
5169 /* GDB used to accept only 2 hex chars here. Stubs should
5170 only send more if they detect GDB supports multi-process
5172 p
= unpack_varlen_hex (&buf
[1], &value
);
5176 /* The remote process exited. */
5177 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5178 event
->ws
.value
.integer
= value
;
5182 /* The remote process exited with a signal. */
5183 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5184 event
->ws
.value
.sig
= (enum target_signal
) value
;
5187 /* If no process is specified, assume inferior_ptid. */
5188 pid
= ptid_get_pid (inferior_ptid
);
5197 else if (strncmp (p
,
5198 "process:", sizeof ("process:") - 1) == 0)
5202 p
+= sizeof ("process:") - 1;
5203 unpack_varlen_hex (p
, &upid
);
5207 error (_("unknown stop reply packet: %s"), buf
);
5210 error (_("unknown stop reply packet: %s"), buf
);
5211 event
->ptid
= pid_to_ptid (pid
);
5216 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5217 error (_("No process or thread specified in stop reply: %s"), buf
);
5220 /* When the stub wants to tell GDB about a new stop reply, it sends a
5221 stop notification (%Stop). Those can come it at any time, hence,
5222 we have to make sure that any pending putpkt/getpkt sequence we're
5223 making is finished, before querying the stub for more events with
5224 vStopped. E.g., if we started a vStopped sequence immediatelly
5225 upon receiving the %Stop notification, something like this could
5233 1.6) <-- (registers reply to step #1.3)
5235 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5238 To solve this, whenever we parse a %Stop notification sucessfully,
5239 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5240 doing whatever we were doing:
5246 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5247 2.5) <-- (registers reply to step #2.3)
5249 Eventualy after step #2.5, we return to the event loop, which
5250 notices there's an event on the
5251 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5252 associated callback --- the function below. At this point, we're
5253 always safe to start a vStopped sequence. :
5256 2.7) <-- T05 thread:2
5262 remote_get_pending_stop_replies (void)
5264 struct remote_state
*rs
= get_remote_state ();
5266 if (pending_stop_reply
)
5269 putpkt ("vStopped");
5271 /* Now we can rely on it. */
5272 push_stop_reply (pending_stop_reply
);
5273 pending_stop_reply
= NULL
;
5277 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5278 if (strcmp (rs
->buf
, "OK") == 0)
5282 struct cleanup
*old_chain
;
5283 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
5285 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5286 remote_parse_stop_reply (rs
->buf
, stop_reply
);
5289 putpkt ("vStopped");
5291 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5293 /* Now we can rely on it. */
5294 discard_cleanups (old_chain
);
5295 push_stop_reply (stop_reply
);
5298 /* We got an unknown stop reply. */
5299 do_cleanups (old_chain
);
5306 /* Called when it is decided that STOP_REPLY holds the info of the
5307 event that is to be returned to the core. This function always
5308 destroys STOP_REPLY. */
5311 process_stop_reply (struct stop_reply
*stop_reply
,
5312 struct target_waitstatus
*status
)
5316 *status
= stop_reply
->ws
;
5317 ptid
= stop_reply
->ptid
;
5319 /* If no thread/process was reported by the stub, assume the current
5321 if (ptid_equal (ptid
, null_ptid
))
5322 ptid
= inferior_ptid
;
5324 if (status
->kind
!= TARGET_WAITKIND_EXITED
5325 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5327 /* Expedited registers. */
5328 if (stop_reply
->regcache
)
5330 struct regcache
*regcache
5331 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5336 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5338 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5339 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5342 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5343 remote_watch_data_address
= stop_reply
->watch_data_address
;
5345 remote_notice_new_inferior (ptid
, 0);
5346 demand_private_info (ptid
)->core
= stop_reply
->core
;
5349 stop_reply_xfree (stop_reply
);
5353 /* The non-stop mode version of target_wait. */
5356 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5358 struct remote_state
*rs
= get_remote_state ();
5359 struct stop_reply
*stop_reply
;
5362 /* If in non-stop mode, get out of getpkt even if a
5363 notification is received. */
5365 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5372 case 'E': /* Error of some sort. */
5373 /* We're out of sync with the target now. Did it continue
5374 or not? We can't tell which thread it was in non-stop,
5375 so just ignore this. */
5376 warning (_("Remote failure reply: %s"), rs
->buf
);
5378 case 'O': /* Console output. */
5379 remote_console_output (rs
->buf
+ 1);
5382 warning (_("Invalid remote reply: %s"), rs
->buf
);
5386 /* Acknowledge a pending stop reply that may have arrived in the
5388 if (pending_stop_reply
!= NULL
)
5389 remote_get_pending_stop_replies ();
5391 /* If indeed we noticed a stop reply, we're done. */
5392 stop_reply
= queued_stop_reply (ptid
);
5393 if (stop_reply
!= NULL
)
5394 return process_stop_reply (stop_reply
, status
);
5396 /* Still no event. If we're just polling for an event, then
5397 return to the event loop. */
5398 if (options
& TARGET_WNOHANG
)
5400 status
->kind
= TARGET_WAITKIND_IGNORE
;
5401 return minus_one_ptid
;
5404 /* Otherwise do a blocking wait. */
5405 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5410 /* Wait until the remote machine stops, then return, storing status in
5411 STATUS just as `wait' would. */
5414 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5416 struct remote_state
*rs
= get_remote_state ();
5417 ptid_t event_ptid
= null_ptid
;
5419 struct stop_reply
*stop_reply
;
5423 status
->kind
= TARGET_WAITKIND_IGNORE
;
5424 status
->value
.integer
= 0;
5426 stop_reply
= queued_stop_reply (ptid
);
5427 if (stop_reply
!= NULL
)
5428 return process_stop_reply (stop_reply
, status
);
5430 if (rs
->cached_wait_status
)
5431 /* Use the cached wait status, but only once. */
5432 rs
->cached_wait_status
= 0;
5437 if (!target_is_async_p ())
5439 ofunc
= signal (SIGINT
, remote_interrupt
);
5440 /* If the user hit C-c before this packet, or between packets,
5441 pretend that it was hit right here. */
5445 remote_interrupt (SIGINT
);
5449 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5450 _never_ wait for ever -> test on target_is_async_p().
5451 However, before we do that we need to ensure that the caller
5452 knows how to take the target into/out of async mode. */
5453 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5454 if (!target_is_async_p ())
5455 signal (SIGINT
, ofunc
);
5460 remote_stopped_by_watchpoint_p
= 0;
5462 /* We got something. */
5463 rs
->waiting_for_stop_reply
= 0;
5465 /* Assume that the target has acknowledged Ctrl-C unless we receive
5466 an 'F' or 'O' packet. */
5467 if (buf
[0] != 'F' && buf
[0] != 'O')
5468 rs
->ctrlc_pending_p
= 0;
5472 case 'E': /* Error of some sort. */
5473 /* We're out of sync with the target now. Did it continue or
5474 not? Not is more likely, so report a stop. */
5475 warning (_("Remote failure reply: %s"), buf
);
5476 status
->kind
= TARGET_WAITKIND_STOPPED
;
5477 status
->value
.sig
= TARGET_SIGNAL_0
;
5479 case 'F': /* File-I/O request. */
5480 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5481 rs
->ctrlc_pending_p
= 0;
5483 case 'T': case 'S': case 'X': case 'W':
5485 struct stop_reply
*stop_reply
;
5486 struct cleanup
*old_chain
;
5488 stop_reply
= stop_reply_xmalloc ();
5489 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5490 remote_parse_stop_reply (buf
, stop_reply
);
5491 discard_cleanups (old_chain
);
5492 event_ptid
= process_stop_reply (stop_reply
, status
);
5495 case 'O': /* Console output. */
5496 remote_console_output (buf
+ 1);
5498 /* The target didn't really stop; keep waiting. */
5499 rs
->waiting_for_stop_reply
= 1;
5503 if (last_sent_signal
!= TARGET_SIGNAL_0
)
5505 /* Zero length reply means that we tried 'S' or 'C' and the
5506 remote system doesn't support it. */
5507 target_terminal_ours_for_output ();
5509 ("Can't send signals to this remote system. %s not sent.\n",
5510 target_signal_to_name (last_sent_signal
));
5511 last_sent_signal
= TARGET_SIGNAL_0
;
5512 target_terminal_inferior ();
5514 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5515 putpkt ((char *) buf
);
5517 /* We just told the target to resume, so a stop reply is in
5519 rs
->waiting_for_stop_reply
= 1;
5522 /* else fallthrough */
5524 warning (_("Invalid remote reply: %s"), buf
);
5526 rs
->waiting_for_stop_reply
= 1;
5530 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5532 /* Nothing interesting happened. If we're doing a non-blocking
5533 poll, we're done. Otherwise, go back to waiting. */
5534 if (options
& TARGET_WNOHANG
)
5535 return minus_one_ptid
;
5539 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5540 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5542 if (!ptid_equal (event_ptid
, null_ptid
))
5543 record_currthread (event_ptid
);
5545 event_ptid
= inferior_ptid
;
5548 /* A process exit. Invalidate our notion of current thread. */
5549 record_currthread (minus_one_ptid
);
5554 /* Wait until the remote machine stops, then return, storing status in
5555 STATUS just as `wait' would. */
5558 remote_wait (struct target_ops
*ops
,
5559 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5564 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5566 event_ptid
= remote_wait_as (ptid
, status
, options
);
5568 if (target_can_async_p ())
5570 /* If there are are events left in the queue tell the event loop
5572 if (stop_reply_queue
)
5573 mark_async_event_handler (remote_async_inferior_event_token
);
5579 /* Fetch a single register using a 'p' packet. */
5582 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5584 struct remote_state
*rs
= get_remote_state ();
5586 char regp
[MAX_REGISTER_SIZE
];
5589 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5592 if (reg
->pnum
== -1)
5597 p
+= hexnumstr (p
, reg
->pnum
);
5600 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5604 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5608 case PACKET_UNKNOWN
:
5611 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5612 gdbarch_register_name (get_regcache_arch (regcache
),
5617 /* If this register is unfetchable, tell the regcache. */
5620 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5624 /* Otherwise, parse and supply the value. */
5630 error (_("fetch_register_using_p: early buf termination"));
5632 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5635 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5639 /* Fetch the registers included in the target's 'g' packet. */
5642 send_g_packet (void)
5644 struct remote_state
*rs
= get_remote_state ();
5647 sprintf (rs
->buf
, "g");
5648 remote_send (&rs
->buf
, &rs
->buf_size
);
5650 /* We can get out of synch in various cases. If the first character
5651 in the buffer is not a hex character, assume that has happened
5652 and try to fetch another packet to read. */
5653 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5654 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5655 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5656 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5659 fprintf_unfiltered (gdb_stdlog
,
5660 "Bad register packet; fetching a new packet\n");
5661 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5664 buf_len
= strlen (rs
->buf
);
5666 /* Sanity check the received packet. */
5667 if (buf_len
% 2 != 0)
5668 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5674 process_g_packet (struct regcache
*regcache
)
5676 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5677 struct remote_state
*rs
= get_remote_state ();
5678 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5683 buf_len
= strlen (rs
->buf
);
5685 /* Further sanity checks, with knowledge of the architecture. */
5686 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5687 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5689 /* Save the size of the packet sent to us by the target. It is used
5690 as a heuristic when determining the max size of packets that the
5691 target can safely receive. */
5692 if (rsa
->actual_register_packet_size
== 0)
5693 rsa
->actual_register_packet_size
= buf_len
;
5695 /* If this is smaller than we guessed the 'g' packet would be,
5696 update our records. A 'g' reply that doesn't include a register's
5697 value implies either that the register is not available, or that
5698 the 'p' packet must be used. */
5699 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5701 rsa
->sizeof_g_packet
= buf_len
/ 2;
5703 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5705 if (rsa
->regs
[i
].pnum
== -1)
5708 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5709 rsa
->regs
[i
].in_g_packet
= 0;
5711 rsa
->regs
[i
].in_g_packet
= 1;
5715 regs
= alloca (rsa
->sizeof_g_packet
);
5717 /* Unimplemented registers read as all bits zero. */
5718 memset (regs
, 0, rsa
->sizeof_g_packet
);
5720 /* Reply describes registers byte by byte, each byte encoded as two
5721 hex characters. Suck them all up, then supply them to the
5722 register cacheing/storage mechanism. */
5725 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
5727 if (p
[0] == 0 || p
[1] == 0)
5728 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5729 internal_error (__FILE__
, __LINE__
,
5730 _("unexpected end of 'g' packet reply"));
5732 if (p
[0] == 'x' && p
[1] == 'x')
5733 regs
[i
] = 0; /* 'x' */
5735 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5739 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5741 struct packet_reg
*r
= &rsa
->regs
[i
];
5745 if (r
->offset
* 2 >= strlen (rs
->buf
))
5746 /* This shouldn't happen - we adjusted in_g_packet above. */
5747 internal_error (__FILE__
, __LINE__
,
5748 _("unexpected end of 'g' packet reply"));
5749 else if (rs
->buf
[r
->offset
* 2] == 'x')
5751 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
5752 /* The register isn't available, mark it as such (at
5753 the same time setting the value to zero). */
5754 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
5757 regcache_raw_supply (regcache
, r
->regnum
,
5764 fetch_registers_using_g (struct regcache
*regcache
)
5767 process_g_packet (regcache
);
5771 remote_fetch_registers (struct target_ops
*ops
,
5772 struct regcache
*regcache
, int regnum
)
5774 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5777 set_general_thread (inferior_ptid
);
5781 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5783 gdb_assert (reg
!= NULL
);
5785 /* If this register might be in the 'g' packet, try that first -
5786 we are likely to read more than one register. If this is the
5787 first 'g' packet, we might be overly optimistic about its
5788 contents, so fall back to 'p'. */
5789 if (reg
->in_g_packet
)
5791 fetch_registers_using_g (regcache
);
5792 if (reg
->in_g_packet
)
5796 if (fetch_register_using_p (regcache
, reg
))
5799 /* This register is not available. */
5800 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5805 fetch_registers_using_g (regcache
);
5807 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5808 if (!rsa
->regs
[i
].in_g_packet
)
5809 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
5811 /* This register is not available. */
5812 regcache_raw_supply (regcache
, i
, NULL
);
5816 /* Prepare to store registers. Since we may send them all (using a
5817 'G' request), we have to read out the ones we don't want to change
5821 remote_prepare_to_store (struct regcache
*regcache
)
5823 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5825 gdb_byte buf
[MAX_REGISTER_SIZE
];
5827 /* Make sure the entire registers array is valid. */
5828 switch (remote_protocol_packets
[PACKET_P
].support
)
5830 case PACKET_DISABLE
:
5831 case PACKET_SUPPORT_UNKNOWN
:
5832 /* Make sure all the necessary registers are cached. */
5833 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5834 if (rsa
->regs
[i
].in_g_packet
)
5835 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
5842 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
5843 packet was not recognized. */
5846 store_register_using_P (const struct regcache
*regcache
,
5847 struct packet_reg
*reg
)
5849 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5850 struct remote_state
*rs
= get_remote_state ();
5851 /* Try storing a single register. */
5852 char *buf
= rs
->buf
;
5853 gdb_byte regp
[MAX_REGISTER_SIZE
];
5856 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
5859 if (reg
->pnum
== -1)
5862 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
5863 p
= buf
+ strlen (buf
);
5864 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
5865 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
5867 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5869 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
5874 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
5875 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
5876 case PACKET_UNKNOWN
:
5879 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
5883 /* Store register REGNUM, or all registers if REGNUM == -1, from the
5884 contents of the register cache buffer. FIXME: ignores errors. */
5887 store_registers_using_G (const struct regcache
*regcache
)
5889 struct remote_state
*rs
= get_remote_state ();
5890 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5894 /* Extract all the registers in the regcache copying them into a
5899 regs
= alloca (rsa
->sizeof_g_packet
);
5900 memset (regs
, 0, rsa
->sizeof_g_packet
);
5901 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5903 struct packet_reg
*r
= &rsa
->regs
[i
];
5906 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
5910 /* Command describes registers byte by byte,
5911 each byte encoded as two hex characters. */
5914 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
5916 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
5918 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5919 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
5920 error (_("Could not write registers; remote failure reply '%s'"),
5924 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
5925 of the register cache buffer. FIXME: ignores errors. */
5928 remote_store_registers (struct target_ops
*ops
,
5929 struct regcache
*regcache
, int regnum
)
5931 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5934 set_general_thread (inferior_ptid
);
5938 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5940 gdb_assert (reg
!= NULL
);
5942 /* Always prefer to store registers using the 'P' packet if
5943 possible; we often change only a small number of registers.
5944 Sometimes we change a larger number; we'd need help from a
5945 higher layer to know to use 'G'. */
5946 if (store_register_using_P (regcache
, reg
))
5949 /* For now, don't complain if we have no way to write the
5950 register. GDB loses track of unavailable registers too
5951 easily. Some day, this may be an error. We don't have
5952 any way to read the register, either... */
5953 if (!reg
->in_g_packet
)
5956 store_registers_using_G (regcache
);
5960 store_registers_using_G (regcache
);
5962 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5963 if (!rsa
->regs
[i
].in_g_packet
)
5964 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
5965 /* See above for why we do not issue an error here. */
5970 /* Return the number of hex digits in num. */
5973 hexnumlen (ULONGEST num
)
5977 for (i
= 0; num
!= 0; i
++)
5983 /* Set BUF to the minimum number of hex digits representing NUM. */
5986 hexnumstr (char *buf
, ULONGEST num
)
5988 int len
= hexnumlen (num
);
5990 return hexnumnstr (buf
, num
, len
);
5994 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
5997 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6003 for (i
= width
- 1; i
>= 0; i
--)
6005 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6012 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6015 remote_address_masked (CORE_ADDR addr
)
6017 int address_size
= remote_address_size
;
6019 /* If "remoteaddresssize" was not set, default to target address size. */
6021 address_size
= gdbarch_addr_bit (target_gdbarch
);
6023 if (address_size
> 0
6024 && address_size
< (sizeof (ULONGEST
) * 8))
6026 /* Only create a mask when that mask can safely be constructed
6027 in a ULONGEST variable. */
6030 mask
= (mask
<< address_size
) - 1;
6036 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6037 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6038 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6039 (which may be more than *OUT_LEN due to escape characters). The
6040 total number of bytes in the output buffer will be at most
6044 remote_escape_output (const gdb_byte
*buffer
, int len
,
6045 gdb_byte
*out_buf
, int *out_len
,
6048 int input_index
, output_index
;
6051 for (input_index
= 0; input_index
< len
; input_index
++)
6053 gdb_byte b
= buffer
[input_index
];
6055 if (b
== '$' || b
== '#' || b
== '}')
6057 /* These must be escaped. */
6058 if (output_index
+ 2 > out_maxlen
)
6060 out_buf
[output_index
++] = '}';
6061 out_buf
[output_index
++] = b
^ 0x20;
6065 if (output_index
+ 1 > out_maxlen
)
6067 out_buf
[output_index
++] = b
;
6071 *out_len
= input_index
;
6072 return output_index
;
6075 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6076 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6077 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6079 This function reverses remote_escape_output. It allows more
6080 escaped characters than that function does, in particular because
6081 '*' must be escaped to avoid the run-length encoding processing
6082 in reading packets. */
6085 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6086 gdb_byte
*out_buf
, int out_maxlen
)
6088 int input_index
, output_index
;
6093 for (input_index
= 0; input_index
< len
; input_index
++)
6095 gdb_byte b
= buffer
[input_index
];
6097 if (output_index
+ 1 > out_maxlen
)
6099 warning (_("Received too much data from remote target;"
6100 " ignoring overflow."));
6101 return output_index
;
6106 out_buf
[output_index
++] = b
^ 0x20;
6112 out_buf
[output_index
++] = b
;
6116 error (_("Unmatched escape character in target response."));
6118 return output_index
;
6121 /* Determine whether the remote target supports binary downloading.
6122 This is accomplished by sending a no-op memory write of zero length
6123 to the target at the specified address. It does not suffice to send
6124 the whole packet, since many stubs strip the eighth bit and
6125 subsequently compute a wrong checksum, which causes real havoc with
6128 NOTE: This can still lose if the serial line is not eight-bit
6129 clean. In cases like this, the user should clear "remote
6133 check_binary_download (CORE_ADDR addr
)
6135 struct remote_state
*rs
= get_remote_state ();
6137 switch (remote_protocol_packets
[PACKET_X
].support
)
6139 case PACKET_DISABLE
:
6143 case PACKET_SUPPORT_UNKNOWN
:
6149 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6151 p
+= hexnumstr (p
, (ULONGEST
) 0);
6155 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6156 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6158 if (rs
->buf
[0] == '\0')
6161 fprintf_unfiltered (gdb_stdlog
,
6162 "binary downloading NOT "
6163 "supported by target\n");
6164 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6169 fprintf_unfiltered (gdb_stdlog
,
6170 "binary downloading suppported by target\n");
6171 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6178 /* Write memory data directly to the remote machine.
6179 This does not inform the data cache; the data cache uses this.
6180 HEADER is the starting part of the packet.
6181 MEMADDR is the address in the remote memory space.
6182 MYADDR is the address of the buffer in our space.
6183 LEN is the number of bytes.
6184 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6185 should send data as binary ('X'), or hex-encoded ('M').
6187 The function creates packet of the form
6188 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6190 where encoding of <DATA> is termined by PACKET_FORMAT.
6192 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6195 Returns the number of bytes transferred, or 0 (setting errno) for
6196 error. Only transfer a single packet. */
6199 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6200 const gdb_byte
*myaddr
, int len
,
6201 char packet_format
, int use_length
)
6203 struct remote_state
*rs
= get_remote_state ();
6213 if (packet_format
!= 'X' && packet_format
!= 'M')
6214 internal_error (__FILE__
, __LINE__
,
6215 _("remote_write_bytes_aux: bad packet format"));
6220 payload_size
= get_memory_write_packet_size ();
6222 /* The packet buffer will be large enough for the payload;
6223 get_memory_packet_size ensures this. */
6226 /* Compute the size of the actual payload by subtracting out the
6227 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6229 payload_size
-= strlen ("$,:#NN");
6231 /* The comma won't be used. */
6233 header_length
= strlen (header
);
6234 payload_size
-= header_length
;
6235 payload_size
-= hexnumlen (memaddr
);
6237 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6239 strcat (rs
->buf
, header
);
6240 p
= rs
->buf
+ strlen (header
);
6242 /* Compute a best guess of the number of bytes actually transfered. */
6243 if (packet_format
== 'X')
6245 /* Best guess at number of bytes that will fit. */
6246 todo
= min (len
, payload_size
);
6248 payload_size
-= hexnumlen (todo
);
6249 todo
= min (todo
, payload_size
);
6253 /* Num bytes that will fit. */
6254 todo
= min (len
, payload_size
/ 2);
6256 payload_size
-= hexnumlen (todo
);
6257 todo
= min (todo
, payload_size
/ 2);
6261 internal_error (__FILE__
, __LINE__
,
6262 _("minumum packet size too small to write data"));
6264 /* If we already need another packet, then try to align the end
6265 of this packet to a useful boundary. */
6266 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6267 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6269 /* Append "<memaddr>". */
6270 memaddr
= remote_address_masked (memaddr
);
6271 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6278 /* Append <len>. Retain the location/size of <len>. It may need to
6279 be adjusted once the packet body has been created. */
6281 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6289 /* Append the packet body. */
6290 if (packet_format
== 'X')
6292 /* Binary mode. Send target system values byte by byte, in
6293 increasing byte addresses. Only escape certain critical
6295 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6298 /* If not all TODO bytes fit, then we'll need another packet. Make
6299 a second try to keep the end of the packet aligned. Don't do
6300 this if the packet is tiny. */
6301 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6305 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6307 if (new_nr_bytes
!= nr_bytes
)
6308 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6313 p
+= payload_length
;
6314 if (use_length
&& nr_bytes
< todo
)
6316 /* Escape chars have filled up the buffer prematurely,
6317 and we have actually sent fewer bytes than planned.
6318 Fix-up the length field of the packet. Use the same
6319 number of characters as before. */
6320 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6321 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6326 /* Normal mode: Send target system values byte by byte, in
6327 increasing byte addresses. Each byte is encoded as a two hex
6329 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6333 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6334 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6336 if (rs
->buf
[0] == 'E')
6338 /* There is no correspondance between what the remote protocol
6339 uses for errors and errno codes. We would like a cleaner way
6340 of representing errors (big enough to include errno codes,
6341 bfd_error codes, and others). But for now just return EIO. */
6346 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6347 fewer bytes than we'd planned. */
6351 /* Write memory data directly to the remote machine.
6352 This does not inform the data cache; the data cache uses this.
6353 MEMADDR is the address in the remote memory space.
6354 MYADDR is the address of the buffer in our space.
6355 LEN is the number of bytes.
6357 Returns number of bytes transferred, or 0 (setting errno) for
6358 error. Only transfer a single packet. */
6361 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6363 char *packet_format
= 0;
6365 /* Check whether the target supports binary download. */
6366 check_binary_download (memaddr
);
6368 switch (remote_protocol_packets
[PACKET_X
].support
)
6371 packet_format
= "X";
6373 case PACKET_DISABLE
:
6374 packet_format
= "M";
6376 case PACKET_SUPPORT_UNKNOWN
:
6377 internal_error (__FILE__
, __LINE__
,
6378 _("remote_write_bytes: bad internal state"));
6380 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6383 return remote_write_bytes_aux (packet_format
,
6384 memaddr
, myaddr
, len
, packet_format
[0], 1);
6387 /* Read memory data directly from the remote machine.
6388 This does not use the data cache; the data cache uses this.
6389 MEMADDR is the address in the remote memory space.
6390 MYADDR is the address of the buffer in our space.
6391 LEN is the number of bytes.
6393 Returns number of bytes transferred, or 0 for error. */
6396 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6398 struct remote_state
*rs
= get_remote_state ();
6399 int max_buf_size
; /* Max size of packet output buffer. */
6407 max_buf_size
= get_memory_read_packet_size ();
6408 /* The packet buffer will be large enough for the payload;
6409 get_memory_packet_size ensures this. */
6411 /* Number if bytes that will fit. */
6412 todo
= min (len
, max_buf_size
/ 2);
6414 /* Construct "m"<memaddr>","<len>". */
6415 memaddr
= remote_address_masked (memaddr
);
6418 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6420 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6423 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6424 if (rs
->buf
[0] == 'E'
6425 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6426 && rs
->buf
[3] == '\0')
6428 /* There is no correspondance between what the remote protocol
6429 uses for errors and errno codes. We would like a cleaner way
6430 of representing errors (big enough to include errno codes,
6431 bfd_error codes, and others). But for now just return
6436 /* Reply describes memory byte by byte, each byte encoded as two hex
6439 i
= hex2bin (p
, myaddr
, todo
);
6440 /* Return what we have. Let higher layers handle partial reads. */
6445 /* Remote notification handler. */
6448 handle_notification (char *buf
, size_t length
)
6450 if (strncmp (buf
, "Stop:", 5) == 0)
6452 if (pending_stop_reply
)
6454 /* We've already parsed the in-flight stop-reply, but the
6455 stub for some reason thought we didn't, possibly due to
6456 timeout on its side. Just ignore it. */
6458 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6462 struct cleanup
*old_chain
;
6463 struct stop_reply
*reply
= stop_reply_xmalloc ();
6465 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6467 remote_parse_stop_reply (buf
+ 5, reply
);
6469 discard_cleanups (old_chain
);
6471 /* Be careful to only set it after parsing, since an error
6472 may be thrown then. */
6473 pending_stop_reply
= reply
;
6475 /* Notify the event loop there's a stop reply to acknowledge
6476 and that there may be more events to fetch. */
6477 mark_async_event_handler (remote_async_get_pending_events_token
);
6480 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6484 /* We ignore notifications we don't recognize, for compatibility
6485 with newer stubs. */
6490 /* Read or write LEN bytes from inferior memory at MEMADDR,
6491 transferring to or from debugger address BUFFER. Write to inferior
6492 if SHOULD_WRITE is nonzero. Returns length of data written or
6493 read; 0 for error. TARGET is unused. */
6496 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6497 int should_write
, struct mem_attrib
*attrib
,
6498 struct target_ops
*target
)
6502 set_general_thread (inferior_ptid
);
6505 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6507 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6512 /* Sends a packet with content determined by the printf format string
6513 FORMAT and the remaining arguments, then gets the reply. Returns
6514 whether the packet was a success, a failure, or unknown. */
6516 static enum packet_result
6517 remote_send_printf (const char *format
, ...)
6519 struct remote_state
*rs
= get_remote_state ();
6520 int max_size
= get_remote_packet_size ();
6523 va_start (ap
, format
);
6526 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6527 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6529 if (putpkt (rs
->buf
) < 0)
6530 error (_("Communication problem with target."));
6533 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6535 return packet_check_result (rs
->buf
);
6539 restore_remote_timeout (void *p
)
6541 int value
= *(int *)p
;
6543 remote_timeout
= value
;
6546 /* Flash writing can take quite some time. We'll set
6547 effectively infinite timeout for flash operations.
6548 In future, we'll need to decide on a better approach. */
6549 static const int remote_flash_timeout
= 1000;
6552 remote_flash_erase (struct target_ops
*ops
,
6553 ULONGEST address
, LONGEST length
)
6555 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6556 int saved_remote_timeout
= remote_timeout
;
6557 enum packet_result ret
;
6558 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6559 &saved_remote_timeout
);
6561 remote_timeout
= remote_flash_timeout
;
6563 ret
= remote_send_printf ("vFlashErase:%s,%s",
6564 phex (address
, addr_size
),
6568 case PACKET_UNKNOWN
:
6569 error (_("Remote target does not support flash erase"));
6571 error (_("Error erasing flash with vFlashErase packet"));
6576 do_cleanups (back_to
);
6580 remote_flash_write (struct target_ops
*ops
,
6581 ULONGEST address
, LONGEST length
,
6582 const gdb_byte
*data
)
6584 int saved_remote_timeout
= remote_timeout
;
6586 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6587 &saved_remote_timeout
);
6589 remote_timeout
= remote_flash_timeout
;
6590 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6591 do_cleanups (back_to
);
6597 remote_flash_done (struct target_ops
*ops
)
6599 int saved_remote_timeout
= remote_timeout
;
6601 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6602 &saved_remote_timeout
);
6604 remote_timeout
= remote_flash_timeout
;
6605 ret
= remote_send_printf ("vFlashDone");
6606 do_cleanups (back_to
);
6610 case PACKET_UNKNOWN
:
6611 error (_("Remote target does not support vFlashDone"));
6613 error (_("Error finishing flash operation"));
6620 remote_files_info (struct target_ops
*ignore
)
6622 puts_filtered ("Debugging a target over a serial line.\n");
6625 /* Stuff for dealing with the packets which are part of this protocol.
6626 See comment at top of file for details. */
6628 /* Read a single character from the remote end. */
6631 readchar (int timeout
)
6635 ch
= serial_readchar (remote_desc
, timeout
);
6640 switch ((enum serial_rc
) ch
)
6644 error (_("Remote connection closed"));
6648 perror_with_name (_("Remote communication error. "
6649 "Target disconnected."));
6651 case SERIAL_TIMEOUT
:
6657 /* Send the command in *BUF to the remote machine, and read the reply
6658 into *BUF. Report an error if we get an error reply. Resize
6659 *BUF using xrealloc if necessary to hold the result, and update
6663 remote_send (char **buf
,
6667 getpkt (buf
, sizeof_buf
, 0);
6669 if ((*buf
)[0] == 'E')
6670 error (_("Remote failure reply: %s"), *buf
);
6673 /* Return a pointer to an xmalloc'ed string representing an escaped
6674 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6675 etc. The caller is responsible for releasing the returned
6679 escape_buffer (const char *buf
, int n
)
6681 struct cleanup
*old_chain
;
6682 struct ui_file
*stb
;
6685 stb
= mem_fileopen ();
6686 old_chain
= make_cleanup_ui_file_delete (stb
);
6688 fputstrn_unfiltered (buf
, n
, 0, stb
);
6689 str
= ui_file_xstrdup (stb
, NULL
);
6690 do_cleanups (old_chain
);
6694 /* Display a null-terminated packet on stdout, for debugging, using C
6698 print_packet (char *buf
)
6700 puts_filtered ("\"");
6701 fputstr_filtered (buf
, '"', gdb_stdout
);
6702 puts_filtered ("\"");
6708 return putpkt_binary (buf
, strlen (buf
));
6711 /* Send a packet to the remote machine, with error checking. The data
6712 of the packet is in BUF. The string in BUF can be at most
6713 get_remote_packet_size () - 5 to account for the $, # and checksum,
6714 and for a possible /0 if we are debugging (remote_debug) and want
6715 to print the sent packet as a string. */
6718 putpkt_binary (char *buf
, int cnt
)
6720 struct remote_state
*rs
= get_remote_state ();
6722 unsigned char csum
= 0;
6723 char *buf2
= alloca (cnt
+ 6);
6729 /* Catch cases like trying to read memory or listing threads while
6730 we're waiting for a stop reply. The remote server wouldn't be
6731 ready to handle this request, so we'd hang and timeout. We don't
6732 have to worry about this in synchronous mode, because in that
6733 case it's not possible to issue a command while the target is
6734 running. This is not a problem in non-stop mode, because in that
6735 case, the stub is always ready to process serial input. */
6736 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6737 error (_("Cannot execute this command while the target is running."));
6739 /* We're sending out a new packet. Make sure we don't look at a
6740 stale cached response. */
6741 rs
->cached_wait_status
= 0;
6743 /* Copy the packet into buffer BUF2, encapsulating it
6744 and giving it a checksum. */
6749 for (i
= 0; i
< cnt
; i
++)
6755 *p
++ = tohex ((csum
>> 4) & 0xf);
6756 *p
++ = tohex (csum
& 0xf);
6758 /* Send it over and over until we get a positive ack. */
6762 int started_error_output
= 0;
6766 struct cleanup
*old_chain
;
6770 str
= escape_buffer (buf2
, p
- buf2
);
6771 old_chain
= make_cleanup (xfree
, str
);
6772 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6773 gdb_flush (gdb_stdlog
);
6774 do_cleanups (old_chain
);
6776 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6777 perror_with_name (_("putpkt: write failed"));
6779 /* If this is a no acks version of the remote protocol, send the
6780 packet and move on. */
6784 /* Read until either a timeout occurs (-2) or '+' is read.
6785 Handle any notification that arrives in the mean time. */
6788 ch
= readchar (remote_timeout
);
6796 case SERIAL_TIMEOUT
:
6799 if (started_error_output
)
6801 putchar_unfiltered ('\n');
6802 started_error_output
= 0;
6811 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6815 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6816 case SERIAL_TIMEOUT
:
6820 break; /* Retransmit buffer. */
6824 fprintf_unfiltered (gdb_stdlog
,
6825 "Packet instead of Ack, ignoring it\n");
6826 /* It's probably an old response sent because an ACK
6827 was lost. Gobble up the packet and ack it so it
6828 doesn't get retransmitted when we resend this
6831 serial_write (remote_desc
, "+", 1);
6832 continue; /* Now, go look for +. */
6839 /* If we got a notification, handle it, and go back to looking
6841 /* We've found the start of a notification. Now
6842 collect the data. */
6843 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
6848 struct cleanup
*old_chain
;
6851 str
= escape_buffer (rs
->buf
, val
);
6852 old_chain
= make_cleanup (xfree
, str
);
6853 fprintf_unfiltered (gdb_stdlog
,
6854 " Notification received: %s\n",
6856 do_cleanups (old_chain
);
6858 handle_notification (rs
->buf
, val
);
6859 /* We're in sync now, rewait for the ack. */
6866 if (!started_error_output
)
6868 started_error_output
= 1;
6869 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6871 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6872 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
6881 if (!started_error_output
)
6883 started_error_output
= 1;
6884 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6886 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6890 break; /* Here to retransmit. */
6894 /* This is wrong. If doing a long backtrace, the user should be
6895 able to get out next time we call QUIT, without anything as
6896 violent as interrupt_query. If we want to provide a way out of
6897 here without getting to the next QUIT, it should be based on
6898 hitting ^C twice as in remote_wait. */
6909 /* Come here after finding the start of a frame when we expected an
6910 ack. Do our best to discard the rest of this packet. */
6919 c
= readchar (remote_timeout
);
6922 case SERIAL_TIMEOUT
:
6923 /* Nothing we can do. */
6926 /* Discard the two bytes of checksum and stop. */
6927 c
= readchar (remote_timeout
);
6929 c
= readchar (remote_timeout
);
6932 case '*': /* Run length encoding. */
6933 /* Discard the repeat count. */
6934 c
= readchar (remote_timeout
);
6939 /* A regular character. */
6945 /* Come here after finding the start of the frame. Collect the rest
6946 into *BUF, verifying the checksum, length, and handling run-length
6947 compression. NUL terminate the buffer. If there is not enough room,
6948 expand *BUF using xrealloc.
6950 Returns -1 on error, number of characters in buffer (ignoring the
6951 trailing NULL) on success. (could be extended to return one of the
6952 SERIAL status indications). */
6955 read_frame (char **buf_p
,
6962 struct remote_state
*rs
= get_remote_state ();
6969 c
= readchar (remote_timeout
);
6972 case SERIAL_TIMEOUT
:
6974 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
6978 fputs_filtered ("Saw new packet start in middle of old one\n",
6980 return -1; /* Start a new packet, count retries. */
6983 unsigned char pktcsum
;
6989 check_0
= readchar (remote_timeout
);
6991 check_1
= readchar (remote_timeout
);
6993 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
6996 fputs_filtered ("Timeout in checksum, retrying\n",
7000 else if (check_0
< 0 || check_1
< 0)
7003 fputs_filtered ("Communication error in checksum\n",
7008 /* Don't recompute the checksum; with no ack packets we
7009 don't have any way to indicate a packet retransmission
7014 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7015 if (csum
== pktcsum
)
7020 struct cleanup
*old_chain
;
7023 str
= escape_buffer (buf
, bc
);
7024 old_chain
= make_cleanup (xfree
, str
);
7025 fprintf_unfiltered (gdb_stdlog
,
7026 "Bad checksum, sentsum=0x%x, "
7027 "csum=0x%x, buf=%s\n",
7028 pktcsum
, csum
, str
);
7029 do_cleanups (old_chain
);
7031 /* Number of characters in buffer ignoring trailing
7035 case '*': /* Run length encoding. */
7040 c
= readchar (remote_timeout
);
7042 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7044 /* The character before ``*'' is repeated. */
7046 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7048 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7050 /* Make some more room in the buffer. */
7051 *sizeof_buf
+= repeat
;
7052 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7056 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7062 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7066 if (bc
>= *sizeof_buf
- 1)
7068 /* Make some more room in the buffer. */
7070 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7081 /* Read a packet from the remote machine, with error checking, and
7082 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7083 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7084 rather than timing out; this is used (in synchronous mode) to wait
7085 for a target that is is executing user code to stop. */
7086 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7087 don't have to change all the calls to getpkt to deal with the
7088 return value, because at the moment I don't know what the right
7089 thing to do it for those. */
7097 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7101 /* Read a packet from the remote machine, with error checking, and
7102 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7103 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7104 rather than timing out; this is used (in synchronous mode) to wait
7105 for a target that is is executing user code to stop. If FOREVER ==
7106 0, this function is allowed to time out gracefully and return an
7107 indication of this to the caller. Otherwise return the number of
7108 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7109 enough reason to return to the caller. */
7112 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7113 int expecting_notif
)
7115 struct remote_state
*rs
= get_remote_state ();
7121 /* We're reading a new response. Make sure we don't look at a
7122 previously cached response. */
7123 rs
->cached_wait_status
= 0;
7125 strcpy (*buf
, "timeout");
7128 timeout
= watchdog
> 0 ? watchdog
: -1;
7129 else if (expecting_notif
)
7130 timeout
= 0; /* There should already be a char in the buffer. If
7133 timeout
= remote_timeout
;
7137 /* Process any number of notifications, and then return when
7141 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7143 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7145 /* This can loop forever if the remote side sends us
7146 characters continuously, but if it pauses, we'll get
7147 SERIAL_TIMEOUT from readchar because of timeout. Then
7148 we'll count that as a retry.
7150 Note that even when forever is set, we will only wait
7151 forever prior to the start of a packet. After that, we
7152 expect characters to arrive at a brisk pace. They should
7153 show up within remote_timeout intervals. */
7155 c
= readchar (timeout
);
7156 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7158 if (c
== SERIAL_TIMEOUT
)
7160 if (expecting_notif
)
7161 return -1; /* Don't complain, it's normal to not get
7162 anything in this case. */
7164 if (forever
) /* Watchdog went off? Kill the target. */
7168 error (_("Watchdog timeout has expired. Target detached."));
7171 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7175 /* We've found the start of a packet or notification.
7176 Now collect the data. */
7177 val
= read_frame (buf
, sizeof_buf
);
7182 serial_write (remote_desc
, "-", 1);
7185 if (tries
> MAX_TRIES
)
7187 /* We have tried hard enough, and just can't receive the
7188 packet/notification. Give up. */
7189 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7191 /* Skip the ack char if we're in no-ack mode. */
7192 if (!rs
->noack_mode
)
7193 serial_write (remote_desc
, "+", 1);
7197 /* If we got an ordinary packet, return that to our caller. */
7202 struct cleanup
*old_chain
;
7205 str
= escape_buffer (*buf
, val
);
7206 old_chain
= make_cleanup (xfree
, str
);
7207 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7208 do_cleanups (old_chain
);
7211 /* Skip the ack char if we're in no-ack mode. */
7212 if (!rs
->noack_mode
)
7213 serial_write (remote_desc
, "+", 1);
7217 /* If we got a notification, handle it, and go back to looking
7221 gdb_assert (c
== '%');
7225 struct cleanup
*old_chain
;
7228 str
= escape_buffer (*buf
, val
);
7229 old_chain
= make_cleanup (xfree
, str
);
7230 fprintf_unfiltered (gdb_stdlog
,
7231 " Notification received: %s\n",
7233 do_cleanups (old_chain
);
7236 handle_notification (*buf
, val
);
7238 /* Notifications require no acknowledgement. */
7240 if (expecting_notif
)
7247 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7249 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
7253 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
7255 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
7260 remote_kill (struct target_ops
*ops
)
7262 /* Use catch_errors so the user can quit from gdb even when we
7263 aren't on speaking terms with the remote system. */
7264 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
7266 /* Don't wait for it to die. I'm not really sure it matters whether
7267 we do or not. For the existing stubs, kill is a noop. */
7268 target_mourn_inferior ();
7272 remote_vkill (int pid
, struct remote_state
*rs
)
7274 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7277 /* Tell the remote target to detach. */
7278 sprintf (rs
->buf
, "vKill;%x", pid
);
7280 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7282 if (packet_ok (rs
->buf
,
7283 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7285 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7292 extended_remote_kill (struct target_ops
*ops
)
7295 int pid
= ptid_get_pid (inferior_ptid
);
7296 struct remote_state
*rs
= get_remote_state ();
7298 res
= remote_vkill (pid
, rs
);
7299 if (res
== -1 && !remote_multi_process_p (rs
))
7301 /* Don't try 'k' on a multi-process aware stub -- it has no way
7302 to specify the pid. */
7306 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7307 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7310 /* Don't wait for it to die. I'm not really sure it matters whether
7311 we do or not. For the existing stubs, kill is a noop. */
7317 error (_("Can't kill process"));
7319 target_mourn_inferior ();
7323 remote_mourn (struct target_ops
*ops
)
7325 remote_mourn_1 (ops
);
7328 /* Worker function for remote_mourn. */
7330 remote_mourn_1 (struct target_ops
*target
)
7332 unpush_target (target
);
7334 /* remote_close takes care of doing most of the clean up. */
7335 generic_mourn_inferior ();
7339 extended_remote_mourn_1 (struct target_ops
*target
)
7341 struct remote_state
*rs
= get_remote_state ();
7343 /* In case we got here due to an error, but we're going to stay
7345 rs
->waiting_for_stop_reply
= 0;
7347 /* We're no longer interested in these events. */
7348 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7350 /* If the current general thread belonged to the process we just
7351 detached from or has exited, the remote side current general
7352 thread becomes undefined. Considering a case like this:
7354 - We just got here due to a detach.
7355 - The process that we're detaching from happens to immediately
7356 report a global breakpoint being hit in non-stop mode, in the
7357 same thread we had selected before.
7358 - GDB attaches to this process again.
7359 - This event happens to be the next event we handle.
7361 GDB would consider that the current general thread didn't need to
7362 be set on the stub side (with Hg), since for all it knew,
7363 GENERAL_THREAD hadn't changed.
7365 Notice that although in all-stop mode, the remote server always
7366 sets the current thread to the thread reporting the stop event,
7367 that doesn't happen in non-stop mode; in non-stop, the stub *must
7368 not* change the current thread when reporting a breakpoint hit,
7369 due to the decoupling of event reporting and event handling.
7371 To keep things simple, we always invalidate our notion of the
7373 record_currthread (minus_one_ptid
);
7375 /* Unlike "target remote", we do not want to unpush the target; then
7376 the next time the user says "run", we won't be connected. */
7378 /* Call common code to mark the inferior as not running. */
7379 generic_mourn_inferior ();
7381 if (!have_inferiors ())
7383 if (!remote_multi_process_p (rs
))
7385 /* Check whether the target is running now - some remote stubs
7386 automatically restart after kill. */
7388 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7390 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7392 /* Assume that the target has been restarted. Set
7393 inferior_ptid so that bits of core GDB realizes
7394 there's something here, e.g., so that the user can
7395 say "kill" again. */
7396 inferior_ptid
= magic_null_ptid
;
7403 extended_remote_mourn (struct target_ops
*ops
)
7405 extended_remote_mourn_1 (ops
);
7409 extended_remote_run (char *args
)
7411 struct remote_state
*rs
= get_remote_state ();
7414 /* If the user has disabled vRun support, or we have detected that
7415 support is not available, do not try it. */
7416 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7419 strcpy (rs
->buf
, "vRun;");
7420 len
= strlen (rs
->buf
);
7422 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7423 error (_("Remote file name too long for run packet"));
7424 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7426 gdb_assert (args
!= NULL
);
7429 struct cleanup
*back_to
;
7433 argv
= gdb_buildargv (args
);
7434 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7435 for (i
= 0; argv
[i
] != NULL
; i
++)
7437 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7438 error (_("Argument list too long for run packet"));
7439 rs
->buf
[len
++] = ';';
7440 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7442 do_cleanups (back_to
);
7445 rs
->buf
[len
++] = '\0';
7448 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7450 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7452 /* We have a wait response; we don't need it, though. All is well. */
7455 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7456 /* It wasn't disabled before, but it is now. */
7460 if (remote_exec_file
[0] == '\0')
7461 error (_("Running the default executable on the remote target failed; "
7462 "try \"set remote exec-file\"?"));
7464 error (_("Running \"%s\" on the remote target failed"),
7469 /* In the extended protocol we want to be able to do things like
7470 "run" and have them basically work as expected. So we need
7471 a special create_inferior function. We support changing the
7472 executable file and the command line arguments, but not the
7476 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7477 char **env
, int from_tty
)
7479 /* If running asynchronously, register the target file descriptor
7480 with the event loop. */
7481 if (target_can_async_p ())
7482 target_async (inferior_event_handler
, 0);
7484 /* Now restart the remote server. */
7485 if (extended_remote_run (args
) == -1)
7487 /* vRun was not supported. Fail if we need it to do what the
7489 if (remote_exec_file
[0])
7490 error (_("Remote target does not support \"set remote exec-file\""));
7492 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7494 /* Fall back to "R". */
7495 extended_remote_restart ();
7498 if (!have_inferiors ())
7500 /* Clean up from the last time we ran, before we mark the target
7501 running again. This will mark breakpoints uninserted, and
7502 get_offsets may insert breakpoints. */
7503 init_thread_list ();
7504 init_wait_for_inferior ();
7507 /* Now mark the inferior as running before we do anything else. */
7508 inferior_ptid
= magic_null_ptid
;
7510 /* Now, if we have thread information, update inferior_ptid. */
7511 inferior_ptid
= remote_current_thread (inferior_ptid
);
7513 remote_add_inferior (ptid_get_pid (inferior_ptid
), 0);
7514 add_thread_silent (inferior_ptid
);
7516 /* Get updated offsets, if the stub uses qOffsets. */
7521 extended_remote_create_inferior (struct target_ops
*ops
,
7522 char *exec_file
, char *args
,
7523 char **env
, int from_tty
)
7525 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7529 /* Insert a breakpoint. On targets that have software breakpoint
7530 support, we ask the remote target to do the work; on targets
7531 which don't, we insert a traditional memory breakpoint. */
7534 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7535 struct bp_target_info
*bp_tgt
)
7537 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7538 If it succeeds, then set the support to PACKET_ENABLE. If it
7539 fails, and the user has explicitly requested the Z support then
7540 report an error, otherwise, mark it disabled and go on. */
7542 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7544 CORE_ADDR addr
= bp_tgt
->placed_address
;
7545 struct remote_state
*rs
;
7549 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7551 rs
= get_remote_state ();
7557 addr
= (ULONGEST
) remote_address_masked (addr
);
7558 p
+= hexnumstr (p
, addr
);
7559 sprintf (p
, ",%d", bpsize
);
7562 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7564 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7569 bp_tgt
->placed_address
= addr
;
7570 bp_tgt
->placed_size
= bpsize
;
7572 case PACKET_UNKNOWN
:
7577 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7581 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7582 struct bp_target_info
*bp_tgt
)
7584 CORE_ADDR addr
= bp_tgt
->placed_address
;
7585 struct remote_state
*rs
= get_remote_state ();
7587 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7595 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7596 p
+= hexnumstr (p
, addr
);
7597 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7600 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7602 return (rs
->buf
[0] == 'E');
7605 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7609 watchpoint_to_Z_packet (int type
)
7614 return Z_PACKET_WRITE_WP
;
7617 return Z_PACKET_READ_WP
;
7620 return Z_PACKET_ACCESS_WP
;
7623 internal_error (__FILE__
, __LINE__
,
7624 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7629 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
7630 struct expression
*cond
)
7632 struct remote_state
*rs
= get_remote_state ();
7634 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7636 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7639 sprintf (rs
->buf
, "Z%x,", packet
);
7640 p
= strchr (rs
->buf
, '\0');
7641 addr
= remote_address_masked (addr
);
7642 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7643 sprintf (p
, ",%x", len
);
7646 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7648 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7652 case PACKET_UNKNOWN
:
7657 internal_error (__FILE__
, __LINE__
,
7658 _("remote_insert_watchpoint: reached end of function"));
7663 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
7664 struct expression
*cond
)
7666 struct remote_state
*rs
= get_remote_state ();
7668 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7670 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7673 sprintf (rs
->buf
, "z%x,", packet
);
7674 p
= strchr (rs
->buf
, '\0');
7675 addr
= remote_address_masked (addr
);
7676 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7677 sprintf (p
, ",%x", len
);
7679 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7681 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7684 case PACKET_UNKNOWN
:
7689 internal_error (__FILE__
, __LINE__
,
7690 _("remote_remove_watchpoint: reached end of function"));
7694 int remote_hw_watchpoint_limit
= -1;
7695 int remote_hw_breakpoint_limit
= -1;
7698 remote_check_watch_resources (int type
, int cnt
, int ot
)
7700 if (type
== bp_hardware_breakpoint
)
7702 if (remote_hw_breakpoint_limit
== 0)
7704 else if (remote_hw_breakpoint_limit
< 0)
7706 else if (cnt
<= remote_hw_breakpoint_limit
)
7711 if (remote_hw_watchpoint_limit
== 0)
7713 else if (remote_hw_watchpoint_limit
< 0)
7717 else if (cnt
<= remote_hw_watchpoint_limit
)
7724 remote_stopped_by_watchpoint (void)
7726 return remote_stopped_by_watchpoint_p
;
7730 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
7734 if (remote_stopped_by_watchpoint ())
7736 *addr_p
= remote_watch_data_address
;
7745 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
7746 struct bp_target_info
*bp_tgt
)
7749 struct remote_state
*rs
;
7752 /* The length field should be set to the size of a breakpoint
7753 instruction, even though we aren't inserting one ourselves. */
7755 gdbarch_remote_breakpoint_from_pc
7756 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
7758 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7761 rs
= get_remote_state ();
7768 addr
= remote_address_masked (bp_tgt
->placed_address
);
7769 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7770 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7773 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7775 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7778 case PACKET_UNKNOWN
:
7783 internal_error (__FILE__
, __LINE__
,
7784 _("remote_insert_hw_breakpoint: reached end of function"));
7789 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
7790 struct bp_target_info
*bp_tgt
)
7793 struct remote_state
*rs
= get_remote_state ();
7796 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7803 addr
= remote_address_masked (bp_tgt
->placed_address
);
7804 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7805 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7808 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7810 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7813 case PACKET_UNKNOWN
:
7818 internal_error (__FILE__
, __LINE__
,
7819 _("remote_remove_hw_breakpoint: reached end of function"));
7822 /* Table used by the crc32 function to calcuate the checksum. */
7824 static unsigned long crc32_table
[256] =
7827 static unsigned long
7828 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
7830 if (!crc32_table
[1])
7832 /* Initialize the CRC table and the decoding table. */
7836 for (i
= 0; i
< 256; i
++)
7838 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
7839 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
7846 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
7852 /* Verify memory using the "qCRC:" request. */
7855 remote_verify_memory (struct target_ops
*ops
,
7856 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
7858 struct remote_state
*rs
= get_remote_state ();
7859 unsigned long host_crc
, target_crc
;
7862 /* FIXME: assumes lma can fit into long. */
7863 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
7864 (long) lma
, (long) size
);
7867 /* Be clever; compute the host_crc before waiting for target
7869 host_crc
= crc32 (data
, size
, 0xffffffff);
7871 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7872 if (rs
->buf
[0] == 'E')
7875 if (rs
->buf
[0] != 'C')
7876 error (_("remote target does not support this operation"));
7878 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
7879 target_crc
= target_crc
* 16 + fromhex (*tmp
);
7881 return (host_crc
== target_crc
);
7884 /* compare-sections command
7886 With no arguments, compares each loadable section in the exec bfd
7887 with the same memory range on the target, and reports mismatches.
7888 Useful for verifying the image on the target against the exec file. */
7891 compare_sections_command (char *args
, int from_tty
)
7894 struct cleanup
*old_chain
;
7896 const char *sectname
;
7904 error (_("command cannot be used without an exec file"));
7906 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
7908 if (!(s
->flags
& SEC_LOAD
))
7909 continue; /* Skip non-loadable section. */
7911 size
= bfd_get_section_size (s
);
7913 continue; /* Skip zero-length section. */
7915 sectname
= bfd_get_section_name (exec_bfd
, s
);
7916 if (args
&& strcmp (args
, sectname
) != 0)
7917 continue; /* Not the section selected by user. */
7919 matched
= 1; /* Do this section. */
7922 sectdata
= xmalloc (size
);
7923 old_chain
= make_cleanup (xfree
, sectdata
);
7924 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
7926 res
= target_verify_memory (sectdata
, lma
, size
);
7929 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
7930 paddress (target_gdbarch
, lma
),
7931 paddress (target_gdbarch
, lma
+ size
));
7933 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
7934 paddress (target_gdbarch
, lma
),
7935 paddress (target_gdbarch
, lma
+ size
));
7937 printf_filtered ("matched.\n");
7940 printf_filtered ("MIS-MATCHED!\n");
7944 do_cleanups (old_chain
);
7947 warning (_("One or more sections of the remote executable does not match\n\
7948 the loaded file\n"));
7949 if (args
&& !matched
)
7950 printf_filtered (_("No loaded section named '%s'.\n"), args
);
7953 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
7954 into remote target. The number of bytes written to the remote
7955 target is returned, or -1 for error. */
7958 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
7959 const char *annex
, const gdb_byte
*writebuf
,
7960 ULONGEST offset
, LONGEST len
,
7961 struct packet_config
*packet
)
7965 struct remote_state
*rs
= get_remote_state ();
7966 int max_size
= get_memory_write_packet_size ();
7968 if (packet
->support
== PACKET_DISABLE
)
7971 /* Insert header. */
7972 i
= snprintf (rs
->buf
, max_size
,
7973 "qXfer:%s:write:%s:%s:",
7974 object_name
, annex
? annex
: "",
7975 phex_nz (offset
, sizeof offset
));
7976 max_size
-= (i
+ 1);
7978 /* Escape as much data as fits into rs->buf. */
7979 buf_len
= remote_escape_output
7980 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
7982 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
7983 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
7984 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7987 unpack_varlen_hex (rs
->buf
, &n
);
7991 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
7992 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
7993 number of bytes read is returned, or 0 for EOF, or -1 for error.
7994 The number of bytes read may be less than LEN without indicating an
7995 EOF. PACKET is checked and updated to indicate whether the remote
7996 target supports this object. */
7999 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8001 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8002 struct packet_config
*packet
)
8004 static char *finished_object
;
8005 static char *finished_annex
;
8006 static ULONGEST finished_offset
;
8008 struct remote_state
*rs
= get_remote_state ();
8009 LONGEST i
, n
, packet_len
;
8011 if (packet
->support
== PACKET_DISABLE
)
8014 /* Check whether we've cached an end-of-object packet that matches
8016 if (finished_object
)
8018 if (strcmp (object_name
, finished_object
) == 0
8019 && strcmp (annex
? annex
: "", finished_annex
) == 0
8020 && offset
== finished_offset
)
8023 /* Otherwise, we're now reading something different. Discard
8025 xfree (finished_object
);
8026 xfree (finished_annex
);
8027 finished_object
= NULL
;
8028 finished_annex
= NULL
;
8031 /* Request only enough to fit in a single packet. The actual data
8032 may not, since we don't know how much of it will need to be escaped;
8033 the target is free to respond with slightly less data. We subtract
8034 five to account for the response type and the protocol frame. */
8035 n
= min (get_remote_packet_size () - 5, len
);
8036 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8037 object_name
, annex
? annex
: "",
8038 phex_nz (offset
, sizeof offset
),
8039 phex_nz (n
, sizeof n
));
8040 i
= putpkt (rs
->buf
);
8045 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8046 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8049 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8050 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8052 /* 'm' means there is (or at least might be) more data after this
8053 batch. That does not make sense unless there's at least one byte
8054 of data in this reply. */
8055 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8056 error (_("Remote qXfer reply contained no data."));
8058 /* Got some data. */
8059 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8061 /* 'l' is an EOF marker, possibly including a final block of data,
8062 or possibly empty. If we have the final block of a non-empty
8063 object, record this fact to bypass a subsequent partial read. */
8064 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8066 finished_object
= xstrdup (object_name
);
8067 finished_annex
= xstrdup (annex
? annex
: "");
8068 finished_offset
= offset
+ i
;
8075 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8076 const char *annex
, gdb_byte
*readbuf
,
8077 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8079 struct remote_state
*rs
;
8084 set_general_thread (inferior_ptid
);
8086 rs
= get_remote_state ();
8088 /* Handle memory using the standard memory routines. */
8089 if (object
== TARGET_OBJECT_MEMORY
)
8095 /* If the remote target is connected but not running, we should
8096 pass this request down to a lower stratum (e.g. the executable
8098 if (!target_has_execution
)
8101 if (writebuf
!= NULL
)
8102 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8104 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8108 else if (xfered
== 0 && errno
== 0)
8114 /* Handle SPU memory using qxfer packets. */
8115 if (object
== TARGET_OBJECT_SPU
)
8118 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8119 &remote_protocol_packets
8120 [PACKET_qXfer_spu_read
]);
8122 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8123 &remote_protocol_packets
8124 [PACKET_qXfer_spu_write
]);
8127 /* Handle extra signal info using qxfer packets. */
8128 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8131 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8132 &remote_protocol_packets
8133 [PACKET_qXfer_siginfo_read
]);
8135 return remote_write_qxfer (ops
, "siginfo", annex
,
8136 writebuf
, offset
, len
,
8137 &remote_protocol_packets
8138 [PACKET_qXfer_siginfo_write
]);
8141 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8144 return remote_read_qxfer (ops
, "statictrace", annex
,
8145 readbuf
, offset
, len
,
8146 &remote_protocol_packets
8147 [PACKET_qXfer_statictrace_read
]);
8152 /* Only handle flash writes. */
8153 if (writebuf
!= NULL
)
8159 case TARGET_OBJECT_FLASH
:
8160 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8164 else if (xfered
== 0 && errno
== 0)
8174 /* Map pre-existing objects onto letters. DO NOT do this for new
8175 objects!!! Instead specify new query packets. */
8178 case TARGET_OBJECT_AVR
:
8182 case TARGET_OBJECT_AUXV
:
8183 gdb_assert (annex
== NULL
);
8184 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8185 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8187 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8188 return remote_read_qxfer
8189 (ops
, "features", annex
, readbuf
, offset
, len
,
8190 &remote_protocol_packets
[PACKET_qXfer_features
]);
8192 case TARGET_OBJECT_LIBRARIES
:
8193 return remote_read_qxfer
8194 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8195 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8197 case TARGET_OBJECT_MEMORY_MAP
:
8198 gdb_assert (annex
== NULL
);
8199 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8200 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8202 case TARGET_OBJECT_OSDATA
:
8203 /* Should only get here if we're connected. */
8204 gdb_assert (remote_desc
);
8205 return remote_read_qxfer
8206 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8207 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8209 case TARGET_OBJECT_THREADS
:
8210 gdb_assert (annex
== NULL
);
8211 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8212 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8218 /* Note: a zero OFFSET and LEN can be used to query the minimum
8220 if (offset
== 0 && len
== 0)
8221 return (get_remote_packet_size ());
8222 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8223 large enough let the caller deal with it. */
8224 if (len
< get_remote_packet_size ())
8226 len
= get_remote_packet_size ();
8228 /* Except for querying the minimum buffer size, target must be open. */
8230 error (_("remote query is only available after target open"));
8232 gdb_assert (annex
!= NULL
);
8233 gdb_assert (readbuf
!= NULL
);
8239 /* We used one buffer char for the remote protocol q command and
8240 another for the query type. As the remote protocol encapsulation
8241 uses 4 chars plus one extra in case we are debugging
8242 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8245 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8247 /* Bad caller may have sent forbidden characters. */
8248 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8253 gdb_assert (annex
[i
] == '\0');
8255 i
= putpkt (rs
->buf
);
8259 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8260 strcpy ((char *) readbuf
, rs
->buf
);
8262 return strlen ((char *) readbuf
);
8266 remote_search_memory (struct target_ops
* ops
,
8267 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8268 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8269 CORE_ADDR
*found_addrp
)
8271 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
8272 struct remote_state
*rs
= get_remote_state ();
8273 int max_size
= get_memory_write_packet_size ();
8274 struct packet_config
*packet
=
8275 &remote_protocol_packets
[PACKET_qSearch_memory
];
8276 /* Number of packet bytes used to encode the pattern;
8277 this could be more than PATTERN_LEN due to escape characters. */
8278 int escaped_pattern_len
;
8279 /* Amount of pattern that was encodable in the packet. */
8280 int used_pattern_len
;
8283 ULONGEST found_addr
;
8285 /* Don't go to the target if we don't have to.
8286 This is done before checking packet->support to avoid the possibility that
8287 a success for this edge case means the facility works in general. */
8288 if (pattern_len
> search_space_len
)
8290 if (pattern_len
== 0)
8292 *found_addrp
= start_addr
;
8296 /* If we already know the packet isn't supported, fall back to the simple
8297 way of searching memory. */
8299 if (packet
->support
== PACKET_DISABLE
)
8301 /* Target doesn't provided special support, fall back and use the
8302 standard support (copy memory and do the search here). */
8303 return simple_search_memory (ops
, start_addr
, search_space_len
,
8304 pattern
, pattern_len
, found_addrp
);
8307 /* Insert header. */
8308 i
= snprintf (rs
->buf
, max_size
,
8309 "qSearch:memory:%s;%s;",
8310 phex_nz (start_addr
, addr_size
),
8311 phex_nz (search_space_len
, sizeof (search_space_len
)));
8312 max_size
-= (i
+ 1);
8314 /* Escape as much data as fits into rs->buf. */
8315 escaped_pattern_len
=
8316 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8317 &used_pattern_len
, max_size
);
8319 /* Bail if the pattern is too large. */
8320 if (used_pattern_len
!= pattern_len
)
8321 error (_("Pattern is too large to transmit to remote target."));
8323 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8324 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8325 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8327 /* The request may not have worked because the command is not
8328 supported. If so, fall back to the simple way. */
8329 if (packet
->support
== PACKET_DISABLE
)
8331 return simple_search_memory (ops
, start_addr
, search_space_len
,
8332 pattern
, pattern_len
, found_addrp
);
8337 if (rs
->buf
[0] == '0')
8339 else if (rs
->buf
[0] == '1')
8342 if (rs
->buf
[1] != ',')
8343 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8344 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8345 *found_addrp
= found_addr
;
8348 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8354 remote_rcmd (char *command
,
8355 struct ui_file
*outbuf
)
8357 struct remote_state
*rs
= get_remote_state ();
8361 error (_("remote rcmd is only available after target open"));
8363 /* Send a NULL command across as an empty command. */
8364 if (command
== NULL
)
8367 /* The query prefix. */
8368 strcpy (rs
->buf
, "qRcmd,");
8369 p
= strchr (rs
->buf
, '\0');
8371 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8372 > get_remote_packet_size ())
8373 error (_("\"monitor\" command ``%s'' is too long."), command
);
8375 /* Encode the actual command. */
8376 bin2hex ((gdb_byte
*) command
, p
, 0);
8378 if (putpkt (rs
->buf
) < 0)
8379 error (_("Communication problem with target."));
8381 /* get/display the response */
8386 /* XXX - see also remote_get_noisy_reply(). */
8388 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8391 error (_("Target does not support this command."));
8392 if (buf
[0] == 'O' && buf
[1] != 'K')
8394 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8397 if (strcmp (buf
, "OK") == 0)
8399 if (strlen (buf
) == 3 && buf
[0] == 'E'
8400 && isdigit (buf
[1]) && isdigit (buf
[2]))
8402 error (_("Protocol error with Rcmd"));
8404 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8406 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8408 fputc_unfiltered (c
, outbuf
);
8414 static VEC(mem_region_s
) *
8415 remote_memory_map (struct target_ops
*ops
)
8417 VEC(mem_region_s
) *result
= NULL
;
8418 char *text
= target_read_stralloc (¤t_target
,
8419 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8423 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8425 result
= parse_memory_map (text
);
8426 do_cleanups (back_to
);
8433 packet_command (char *args
, int from_tty
)
8435 struct remote_state
*rs
= get_remote_state ();
8438 error (_("command can only be used with remote target"));
8441 error (_("remote-packet command requires packet text as argument"));
8443 puts_filtered ("sending: ");
8444 print_packet (args
);
8445 puts_filtered ("\n");
8448 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8449 puts_filtered ("received: ");
8450 print_packet (rs
->buf
);
8451 puts_filtered ("\n");
8455 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8457 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8459 static void threadset_test_cmd (char *cmd
, int tty
);
8461 static void threadalive_test (char *cmd
, int tty
);
8463 static void threadlist_test_cmd (char *cmd
, int tty
);
8465 int get_and_display_threadinfo (threadref
*ref
);
8467 static void threadinfo_test_cmd (char *cmd
, int tty
);
8469 static int thread_display_step (threadref
*ref
, void *context
);
8471 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8473 static void init_remote_threadtests (void);
8475 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8478 threadset_test_cmd (char *cmd
, int tty
)
8480 int sample_thread
= SAMPLE_THREAD
;
8482 printf_filtered (_("Remote threadset test\n"));
8483 set_general_thread (sample_thread
);
8488 threadalive_test (char *cmd
, int tty
)
8490 int sample_thread
= SAMPLE_THREAD
;
8491 int pid
= ptid_get_pid (inferior_ptid
);
8492 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8494 if (remote_thread_alive (ptid
))
8495 printf_filtered ("PASS: Thread alive test\n");
8497 printf_filtered ("FAIL: Thread alive test\n");
8500 void output_threadid (char *title
, threadref
*ref
);
8503 output_threadid (char *title
, threadref
*ref
)
8507 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8509 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8513 threadlist_test_cmd (char *cmd
, int tty
)
8516 threadref nextthread
;
8517 int done
, result_count
;
8518 threadref threadlist
[3];
8520 printf_filtered ("Remote Threadlist test\n");
8521 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8522 &result_count
, &threadlist
[0]))
8523 printf_filtered ("FAIL: threadlist test\n");
8526 threadref
*scan
= threadlist
;
8527 threadref
*limit
= scan
+ result_count
;
8529 while (scan
< limit
)
8530 output_threadid (" thread ", scan
++);
8535 display_thread_info (struct gdb_ext_thread_info
*info
)
8537 output_threadid ("Threadid: ", &info
->threadid
);
8538 printf_filtered ("Name: %s\n ", info
->shortname
);
8539 printf_filtered ("State: %s\n", info
->display
);
8540 printf_filtered ("other: %s\n\n", info
->more_display
);
8544 get_and_display_threadinfo (threadref
*ref
)
8548 struct gdb_ext_thread_info threadinfo
;
8550 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8551 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8552 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8553 display_thread_info (&threadinfo
);
8558 threadinfo_test_cmd (char *cmd
, int tty
)
8560 int athread
= SAMPLE_THREAD
;
8564 int_to_threadref (&thread
, athread
);
8565 printf_filtered ("Remote Threadinfo test\n");
8566 if (!get_and_display_threadinfo (&thread
))
8567 printf_filtered ("FAIL cannot get thread info\n");
8571 thread_display_step (threadref
*ref
, void *context
)
8573 /* output_threadid(" threadstep ",ref); *//* simple test */
8574 return get_and_display_threadinfo (ref
);
8578 threadlist_update_test_cmd (char *cmd
, int tty
)
8580 printf_filtered ("Remote Threadlist update test\n");
8581 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8585 init_remote_threadtests (void)
8587 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
8588 _("Fetch and print the remote list of "
8589 "thread identifiers, one pkt only"));
8590 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8591 _("Fetch and display info about one thread"));
8592 add_com ("tset", class_obscure
, threadset_test_cmd
,
8593 _("Test setting to a different thread"));
8594 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8595 _("Iterate through updating all remote thread info"));
8596 add_com ("talive", class_obscure
, threadalive_test
,
8597 _(" Remote thread alive test "));
8602 /* Convert a thread ID to a string. Returns the string in a static
8606 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8608 static char buf
[64];
8609 struct remote_state
*rs
= get_remote_state ();
8611 if (ptid_is_pid (ptid
))
8613 /* Printing an inferior target id. */
8615 /* When multi-process extensions are off, there's no way in the
8616 remote protocol to know the remote process id, if there's any
8617 at all. There's one exception --- when we're connected with
8618 target extended-remote, and we manually attached to a process
8619 with "attach PID". We don't record anywhere a flag that
8620 allows us to distinguish that case from the case of
8621 connecting with extended-remote and the stub already being
8622 attached to a process, and reporting yes to qAttached, hence
8623 no smart special casing here. */
8624 if (!remote_multi_process_p (rs
))
8626 xsnprintf (buf
, sizeof buf
, "Remote target");
8630 return normal_pid_to_str (ptid
);
8634 if (ptid_equal (magic_null_ptid
, ptid
))
8635 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8636 else if (remote_multi_process_p (rs
))
8637 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8638 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8640 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8641 ptid_get_tid (ptid
));
8646 /* Get the address of the thread local variable in OBJFILE which is
8647 stored at OFFSET within the thread local storage for thread PTID. */
8650 remote_get_thread_local_address (struct target_ops
*ops
,
8651 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8653 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8655 struct remote_state
*rs
= get_remote_state ();
8657 char *endp
= rs
->buf
+ get_remote_packet_size ();
8658 enum packet_result result
;
8660 strcpy (p
, "qGetTLSAddr:");
8662 p
= write_ptid (p
, endp
, ptid
);
8664 p
+= hexnumstr (p
, offset
);
8666 p
+= hexnumstr (p
, lm
);
8670 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8671 result
= packet_ok (rs
->buf
,
8672 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8673 if (result
== PACKET_OK
)
8677 unpack_varlen_hex (rs
->buf
, &result
);
8680 else if (result
== PACKET_UNKNOWN
)
8681 throw_error (TLS_GENERIC_ERROR
,
8682 _("Remote target doesn't support qGetTLSAddr packet"));
8684 throw_error (TLS_GENERIC_ERROR
,
8685 _("Remote target failed to process qGetTLSAddr request"));
8688 throw_error (TLS_GENERIC_ERROR
,
8689 _("TLS not supported or disabled on this target"));
8694 /* Provide thread local base, i.e. Thread Information Block address.
8695 Returns 1 if ptid is found and thread_local_base is non zero. */
8698 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
8700 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
8702 struct remote_state
*rs
= get_remote_state ();
8704 char *endp
= rs
->buf
+ get_remote_packet_size ();
8705 enum packet_result result
;
8707 strcpy (p
, "qGetTIBAddr:");
8709 p
= write_ptid (p
, endp
, ptid
);
8713 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8714 result
= packet_ok (rs
->buf
,
8715 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
8716 if (result
== PACKET_OK
)
8720 unpack_varlen_hex (rs
->buf
, &result
);
8722 *addr
= (CORE_ADDR
) result
;
8725 else if (result
== PACKET_UNKNOWN
)
8726 error (_("Remote target doesn't support qGetTIBAddr packet"));
8728 error (_("Remote target failed to process qGetTIBAddr request"));
8731 error (_("qGetTIBAddr not supported or disabled on this target"));
8736 /* Support for inferring a target description based on the current
8737 architecture and the size of a 'g' packet. While the 'g' packet
8738 can have any size (since optional registers can be left off the
8739 end), some sizes are easily recognizable given knowledge of the
8740 approximate architecture. */
8742 struct remote_g_packet_guess
8745 const struct target_desc
*tdesc
;
8747 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
8748 DEF_VEC_O(remote_g_packet_guess_s
);
8750 struct remote_g_packet_data
8752 VEC(remote_g_packet_guess_s
) *guesses
;
8755 static struct gdbarch_data
*remote_g_packet_data_handle
;
8758 remote_g_packet_data_init (struct obstack
*obstack
)
8760 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
8764 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
8765 const struct target_desc
*tdesc
)
8767 struct remote_g_packet_data
*data
8768 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
8769 struct remote_g_packet_guess new_guess
, *guess
;
8772 gdb_assert (tdesc
!= NULL
);
8775 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8777 if (guess
->bytes
== bytes
)
8778 internal_error (__FILE__
, __LINE__
,
8779 _("Duplicate g packet description added for size %d"),
8782 new_guess
.bytes
= bytes
;
8783 new_guess
.tdesc
= tdesc
;
8784 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
8787 /* Return 1 if remote_read_description would do anything on this target
8788 and architecture, 0 otherwise. */
8791 remote_read_description_p (struct target_ops
*target
)
8793 struct remote_g_packet_data
*data
8794 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8796 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8802 static const struct target_desc
*
8803 remote_read_description (struct target_ops
*target
)
8805 struct remote_g_packet_data
*data
8806 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8808 /* Do not try this during initial connection, when we do not know
8809 whether there is a running but stopped thread. */
8810 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
8813 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8815 struct remote_g_packet_guess
*guess
;
8817 int bytes
= send_g_packet ();
8820 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8822 if (guess
->bytes
== bytes
)
8823 return guess
->tdesc
;
8825 /* We discard the g packet. A minor optimization would be to
8826 hold on to it, and fill the register cache once we have selected
8827 an architecture, but it's too tricky to do safely. */
8833 /* Remote file transfer support. This is host-initiated I/O, not
8834 target-initiated; for target-initiated, see remote-fileio.c. */
8836 /* If *LEFT is at least the length of STRING, copy STRING to
8837 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8838 decrease *LEFT. Otherwise raise an error. */
8841 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
8843 int len
= strlen (string
);
8846 error (_("Packet too long for target."));
8848 memcpy (*buffer
, string
, len
);
8852 /* NUL-terminate the buffer as a convenience, if there is
8858 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
8859 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8860 decrease *LEFT. Otherwise raise an error. */
8863 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
8866 if (2 * len
> *left
)
8867 error (_("Packet too long for target."));
8869 bin2hex (bytes
, *buffer
, len
);
8873 /* NUL-terminate the buffer as a convenience, if there is
8879 /* If *LEFT is large enough, convert VALUE to hex and add it to
8880 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8881 decrease *LEFT. Otherwise raise an error. */
8884 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
8886 int len
= hexnumlen (value
);
8889 error (_("Packet too long for target."));
8891 hexnumstr (*buffer
, value
);
8895 /* NUL-terminate the buffer as a convenience, if there is
8901 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
8902 value, *REMOTE_ERRNO to the remote error number or zero if none
8903 was included, and *ATTACHMENT to point to the start of the annex
8904 if any. The length of the packet isn't needed here; there may
8905 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
8907 Return 0 if the packet could be parsed, -1 if it could not. If
8908 -1 is returned, the other variables may not be initialized. */
8911 remote_hostio_parse_result (char *buffer
, int *retcode
,
8912 int *remote_errno
, char **attachment
)
8919 if (buffer
[0] != 'F')
8923 *retcode
= strtol (&buffer
[1], &p
, 16);
8924 if (errno
!= 0 || p
== &buffer
[1])
8927 /* Check for ",errno". */
8931 *remote_errno
= strtol (p
+ 1, &p2
, 16);
8932 if (errno
!= 0 || p
+ 1 == p2
)
8937 /* Check for ";attachment". If there is no attachment, the
8938 packet should end here. */
8941 *attachment
= p
+ 1;
8944 else if (*p
== '\0')
8950 /* Send a prepared I/O packet to the target and read its response.
8951 The prepared packet is in the global RS->BUF before this function
8952 is called, and the answer is there when we return.
8954 COMMAND_BYTES is the length of the request to send, which may include
8955 binary data. WHICH_PACKET is the packet configuration to check
8956 before attempting a packet. If an error occurs, *REMOTE_ERRNO
8957 is set to the error number and -1 is returned. Otherwise the value
8958 returned by the function is returned.
8960 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
8961 attachment is expected; an error will be reported if there's a
8962 mismatch. If one is found, *ATTACHMENT will be set to point into
8963 the packet buffer and *ATTACHMENT_LEN will be set to the
8964 attachment's length. */
8967 remote_hostio_send_command (int command_bytes
, int which_packet
,
8968 int *remote_errno
, char **attachment
,
8969 int *attachment_len
)
8971 struct remote_state
*rs
= get_remote_state ();
8972 int ret
, bytes_read
;
8973 char *attachment_tmp
;
8976 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
8978 *remote_errno
= FILEIO_ENOSYS
;
8982 putpkt_binary (rs
->buf
, command_bytes
);
8983 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8985 /* If it timed out, something is wrong. Don't try to parse the
8989 *remote_errno
= FILEIO_EINVAL
;
8993 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
8996 *remote_errno
= FILEIO_EINVAL
;
8998 case PACKET_UNKNOWN
:
8999 *remote_errno
= FILEIO_ENOSYS
;
9005 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9008 *remote_errno
= FILEIO_EINVAL
;
9012 /* Make sure we saw an attachment if and only if we expected one. */
9013 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9014 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9016 *remote_errno
= FILEIO_EINVAL
;
9020 /* If an attachment was found, it must point into the packet buffer;
9021 work out how many bytes there were. */
9022 if (attachment_tmp
!= NULL
)
9024 *attachment
= attachment_tmp
;
9025 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9031 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9032 remote file descriptor, or -1 if an error occurs (and set
9036 remote_hostio_open (const char *filename
, int flags
, int mode
,
9039 struct remote_state
*rs
= get_remote_state ();
9041 int left
= get_remote_packet_size () - 1;
9043 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9045 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9047 remote_buffer_add_string (&p
, &left
, ",");
9049 remote_buffer_add_int (&p
, &left
, flags
);
9050 remote_buffer_add_string (&p
, &left
, ",");
9052 remote_buffer_add_int (&p
, &left
, mode
);
9054 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9055 remote_errno
, NULL
, NULL
);
9058 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9059 Return the number of bytes written, or -1 if an error occurs (and
9060 set *REMOTE_ERRNO). */
9063 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9064 ULONGEST offset
, int *remote_errno
)
9066 struct remote_state
*rs
= get_remote_state ();
9068 int left
= get_remote_packet_size ();
9071 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9073 remote_buffer_add_int (&p
, &left
, fd
);
9074 remote_buffer_add_string (&p
, &left
, ",");
9076 remote_buffer_add_int (&p
, &left
, offset
);
9077 remote_buffer_add_string (&p
, &left
, ",");
9079 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9080 get_remote_packet_size () - (p
- rs
->buf
));
9082 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9083 remote_errno
, NULL
, NULL
);
9086 /* Read up to LEN bytes FD on the remote target into READ_BUF
9087 Return the number of bytes read, or -1 if an error occurs (and
9088 set *REMOTE_ERRNO). */
9091 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9092 ULONGEST offset
, int *remote_errno
)
9094 struct remote_state
*rs
= get_remote_state ();
9097 int left
= get_remote_packet_size ();
9098 int ret
, attachment_len
;
9101 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9103 remote_buffer_add_int (&p
, &left
, fd
);
9104 remote_buffer_add_string (&p
, &left
, ",");
9106 remote_buffer_add_int (&p
, &left
, len
);
9107 remote_buffer_add_string (&p
, &left
, ",");
9109 remote_buffer_add_int (&p
, &left
, offset
);
9111 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9112 remote_errno
, &attachment
,
9118 read_len
= remote_unescape_input (attachment
, attachment_len
,
9120 if (read_len
!= ret
)
9121 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9126 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9127 (and set *REMOTE_ERRNO). */
9130 remote_hostio_close (int fd
, int *remote_errno
)
9132 struct remote_state
*rs
= get_remote_state ();
9134 int left
= get_remote_packet_size () - 1;
9136 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9138 remote_buffer_add_int (&p
, &left
, fd
);
9140 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9141 remote_errno
, NULL
, NULL
);
9144 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9145 occurs (and set *REMOTE_ERRNO). */
9148 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9150 struct remote_state
*rs
= get_remote_state ();
9152 int left
= get_remote_packet_size () - 1;
9154 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9156 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9159 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9160 remote_errno
, NULL
, NULL
);
9164 remote_fileio_errno_to_host (int errnum
)
9188 case FILEIO_ENOTDIR
:
9208 case FILEIO_ENAMETOOLONG
:
9209 return ENAMETOOLONG
;
9215 remote_hostio_error (int errnum
)
9217 int host_error
= remote_fileio_errno_to_host (errnum
);
9219 if (host_error
== -1)
9220 error (_("Unknown remote I/O error %d"), errnum
);
9222 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9226 remote_hostio_close_cleanup (void *opaque
)
9228 int fd
= *(int *) opaque
;
9231 remote_hostio_close (fd
, &remote_errno
);
9236 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9238 const char *filename
= bfd_get_filename (abfd
);
9239 int fd
, remote_errno
;
9242 gdb_assert (remote_filename_p (filename
));
9244 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9247 errno
= remote_fileio_errno_to_host (remote_errno
);
9248 bfd_set_error (bfd_error_system_call
);
9252 stream
= xmalloc (sizeof (int));
9258 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9260 int fd
= *(int *)stream
;
9265 /* Ignore errors on close; these may happen if the remote
9266 connection was already torn down. */
9267 remote_hostio_close (fd
, &remote_errno
);
9273 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9274 file_ptr nbytes
, file_ptr offset
)
9276 int fd
= *(int *)stream
;
9278 file_ptr pos
, bytes
;
9281 while (nbytes
> pos
)
9283 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9284 offset
+ pos
, &remote_errno
);
9286 /* Success, but no bytes, means end-of-file. */
9290 errno
= remote_fileio_errno_to_host (remote_errno
);
9291 bfd_set_error (bfd_error_system_call
);
9302 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9304 /* FIXME: We should probably implement remote_hostio_stat. */
9305 sb
->st_size
= INT_MAX
;
9310 remote_filename_p (const char *filename
)
9312 return strncmp (filename
, "remote:", 7) == 0;
9316 remote_bfd_open (const char *remote_file
, const char *target
)
9318 return bfd_openr_iovec (remote_file
, target
,
9319 remote_bfd_iovec_open
, NULL
,
9320 remote_bfd_iovec_pread
,
9321 remote_bfd_iovec_close
,
9322 remote_bfd_iovec_stat
);
9326 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9328 struct cleanup
*back_to
, *close_cleanup
;
9329 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9332 int bytes_in_buffer
;
9337 error (_("command can only be used with remote target"));
9339 file
= fopen (local_file
, "rb");
9341 perror_with_name (local_file
);
9342 back_to
= make_cleanup_fclose (file
);
9344 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9346 0700, &remote_errno
);
9348 remote_hostio_error (remote_errno
);
9350 /* Send up to this many bytes at once. They won't all fit in the
9351 remote packet limit, so we'll transfer slightly fewer. */
9352 io_size
= get_remote_packet_size ();
9353 buffer
= xmalloc (io_size
);
9354 make_cleanup (xfree
, buffer
);
9356 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9358 bytes_in_buffer
= 0;
9361 while (bytes_in_buffer
|| !saw_eof
)
9365 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
9366 io_size
- bytes_in_buffer
,
9371 error (_("Error reading %s."), local_file
);
9374 /* EOF. Unless there is something still in the
9375 buffer from the last iteration, we are done. */
9377 if (bytes_in_buffer
== 0)
9385 bytes
+= bytes_in_buffer
;
9386 bytes_in_buffer
= 0;
9388 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
9389 offset
, &remote_errno
);
9392 remote_hostio_error (remote_errno
);
9393 else if (retcode
== 0)
9394 error (_("Remote write of %d bytes returned 0!"), bytes
);
9395 else if (retcode
< bytes
)
9397 /* Short write. Save the rest of the read data for the next
9399 bytes_in_buffer
= bytes
- retcode
;
9400 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9406 discard_cleanups (close_cleanup
);
9407 if (remote_hostio_close (fd
, &remote_errno
))
9408 remote_hostio_error (remote_errno
);
9411 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9412 do_cleanups (back_to
);
9416 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9418 struct cleanup
*back_to
, *close_cleanup
;
9419 int fd
, remote_errno
, bytes
, io_size
;
9425 error (_("command can only be used with remote target"));
9427 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9429 remote_hostio_error (remote_errno
);
9431 file
= fopen (local_file
, "wb");
9433 perror_with_name (local_file
);
9434 back_to
= make_cleanup_fclose (file
);
9436 /* Send up to this many bytes at once. They won't all fit in the
9437 remote packet limit, so we'll transfer slightly fewer. */
9438 io_size
= get_remote_packet_size ();
9439 buffer
= xmalloc (io_size
);
9440 make_cleanup (xfree
, buffer
);
9442 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9447 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9449 /* Success, but no bytes, means end-of-file. */
9452 remote_hostio_error (remote_errno
);
9456 bytes
= fwrite (buffer
, 1, bytes
, file
);
9458 perror_with_name (local_file
);
9461 discard_cleanups (close_cleanup
);
9462 if (remote_hostio_close (fd
, &remote_errno
))
9463 remote_hostio_error (remote_errno
);
9466 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9467 do_cleanups (back_to
);
9471 remote_file_delete (const char *remote_file
, int from_tty
)
9473 int retcode
, remote_errno
;
9476 error (_("command can only be used with remote target"));
9478 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9480 remote_hostio_error (remote_errno
);
9483 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9487 remote_put_command (char *args
, int from_tty
)
9489 struct cleanup
*back_to
;
9493 error_no_arg (_("file to put"));
9495 argv
= gdb_buildargv (args
);
9496 back_to
= make_cleanup_freeargv (argv
);
9497 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9498 error (_("Invalid parameters to remote put"));
9500 remote_file_put (argv
[0], argv
[1], from_tty
);
9502 do_cleanups (back_to
);
9506 remote_get_command (char *args
, int from_tty
)
9508 struct cleanup
*back_to
;
9512 error_no_arg (_("file to get"));
9514 argv
= gdb_buildargv (args
);
9515 back_to
= make_cleanup_freeargv (argv
);
9516 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9517 error (_("Invalid parameters to remote get"));
9519 remote_file_get (argv
[0], argv
[1], from_tty
);
9521 do_cleanups (back_to
);
9525 remote_delete_command (char *args
, int from_tty
)
9527 struct cleanup
*back_to
;
9531 error_no_arg (_("file to delete"));
9533 argv
= gdb_buildargv (args
);
9534 back_to
= make_cleanup_freeargv (argv
);
9535 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9536 error (_("Invalid parameters to remote delete"));
9538 remote_file_delete (argv
[0], from_tty
);
9540 do_cleanups (back_to
);
9544 remote_command (char *args
, int from_tty
)
9546 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9550 remote_can_execute_reverse (void)
9552 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9553 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9560 remote_supports_non_stop (void)
9566 remote_supports_multi_process (void)
9568 struct remote_state
*rs
= get_remote_state ();
9570 return remote_multi_process_p (rs
);
9574 remote_supports_cond_tracepoints (void)
9576 struct remote_state
*rs
= get_remote_state ();
9578 return rs
->cond_tracepoints
;
9582 remote_supports_fast_tracepoints (void)
9584 struct remote_state
*rs
= get_remote_state ();
9586 return rs
->fast_tracepoints
;
9590 remote_supports_static_tracepoints (void)
9592 struct remote_state
*rs
= get_remote_state ();
9594 return rs
->static_tracepoints
;
9598 remote_trace_init (void)
9601 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9602 if (strcmp (target_buf
, "OK") != 0)
9603 error (_("Target does not support this command."));
9606 static void free_actions_list (char **actions_list
);
9607 static void free_actions_list_cleanup_wrapper (void *);
9609 free_actions_list_cleanup_wrapper (void *al
)
9611 free_actions_list (al
);
9615 free_actions_list (char **actions_list
)
9619 if (actions_list
== 0)
9622 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9623 xfree (actions_list
[ndx
]);
9625 xfree (actions_list
);
9628 /* Recursive routine to walk through command list including loops, and
9629 download packets for each command. */
9632 remote_download_command_source (int num
, ULONGEST addr
,
9633 struct command_line
*cmds
)
9635 struct remote_state
*rs
= get_remote_state ();
9636 struct command_line
*cmd
;
9638 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
9640 QUIT
; /* Allow user to bail out with ^C. */
9641 strcpy (rs
->buf
, "QTDPsrc:");
9642 encode_source_string (num
, addr
, "cmd", cmd
->line
,
9643 rs
->buf
+ strlen (rs
->buf
),
9644 rs
->buf_size
- strlen (rs
->buf
));
9646 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9647 if (strcmp (target_buf
, "OK"))
9648 warning (_("Target does not support source download."));
9650 if (cmd
->control_type
== while_control
9651 || cmd
->control_type
== while_stepping_control
)
9653 remote_download_command_source (num
, addr
, *cmd
->body_list
);
9655 QUIT
; /* Allow user to bail out with ^C. */
9656 strcpy (rs
->buf
, "QTDPsrc:");
9657 encode_source_string (num
, addr
, "cmd", "end",
9658 rs
->buf
+ strlen (rs
->buf
),
9659 rs
->buf_size
- strlen (rs
->buf
));
9661 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9662 if (strcmp (target_buf
, "OK"))
9663 warning (_("Target does not support source download."));
9669 remote_download_tracepoint (struct breakpoint
*t
)
9671 struct bp_location
*loc
;
9676 char **stepping_actions
;
9678 struct cleanup
*old_chain
= NULL
;
9679 struct agent_expr
*aexpr
;
9680 struct cleanup
*aexpr_chain
= NULL
;
9683 /* Iterate over all the tracepoint locations. It's up to the target to
9684 notice multiple tracepoint packets with the same number but different
9685 addresses, and treat them as multiple locations. */
9686 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
9688 encode_actions (t
, loc
, &tdp_actions
, &stepping_actions
);
9689 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
9691 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
9694 tpaddr
= loc
->address
;
9695 sprintf_vma (addrbuf
, tpaddr
);
9696 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", t
->number
,
9697 addrbuf
, /* address */
9698 (t
->enable_state
== bp_enabled
? 'E' : 'D'),
9699 t
->step_count
, t
->pass_count
);
9700 /* Fast tracepoints are mostly handled by the target, but we can
9701 tell the target how big of an instruction block should be moved
9703 if (t
->type
== bp_fast_tracepoint
)
9705 /* Only test for support at download time; we may not know
9706 target capabilities at definition time. */
9707 if (remote_supports_fast_tracepoints ())
9711 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
9712 tpaddr
, &isize
, NULL
))
9713 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
9715 /* If it passed validation at definition but fails now,
9716 something is very wrong. */
9717 internal_error (__FILE__
, __LINE__
,
9718 _("Fast tracepoint not "
9719 "valid during download"));
9722 /* Fast tracepoints are functionally identical to regular
9723 tracepoints, so don't take lack of support as a reason to
9724 give up on the trace run. */
9725 warning (_("Target does not support fast tracepoints, "
9726 "downloading %d as regular tracepoint"), t
->number
);
9728 else if (t
->type
== bp_static_tracepoint
)
9730 /* Only test for support at download time; we may not know
9731 target capabilities at definition time. */
9732 if (remote_supports_static_tracepoints ())
9734 struct static_tracepoint_marker marker
;
9736 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
9739 error (_("Static tracepoint not valid during download"));
9742 /* Fast tracepoints are functionally identical to regular
9743 tracepoints, so don't take lack of support as a reason
9744 to give up on the trace run. */
9745 error (_("Target does not support static tracepoints"));
9747 /* If the tracepoint has a conditional, make it into an agent
9748 expression and append to the definition. */
9751 /* Only test support at download time, we may not know target
9752 capabilities at definition time. */
9753 if (remote_supports_cond_tracepoints ())
9755 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
9756 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
9757 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
9758 pkt
= buf
+ strlen (buf
);
9759 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
9760 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
9762 do_cleanups (aexpr_chain
);
9765 warning (_("Target does not support conditional tracepoints, "
9766 "ignoring tp %d cond"), t
->number
);
9769 if (t
->commands
|| *default_collect
)
9772 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9773 if (strcmp (target_buf
, "OK"))
9774 error (_("Target does not support tracepoints."));
9776 /* do_single_steps (t); */
9779 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
9781 QUIT
; /* Allow user to bail out with ^C. */
9782 sprintf (buf
, "QTDP:-%x:%s:%s%c",
9783 t
->number
, addrbuf
, /* address */
9785 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
9788 remote_get_noisy_reply (&target_buf
,
9790 if (strcmp (target_buf
, "OK"))
9791 error (_("Error on target while setting tracepoints."));
9794 if (stepping_actions
)
9796 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
9798 QUIT
; /* Allow user to bail out with ^C. */
9799 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
9800 t
->number
, addrbuf
, /* address */
9801 ((ndx
== 0) ? "S" : ""),
9802 stepping_actions
[ndx
],
9803 (stepping_actions
[ndx
+ 1] ? "-" : ""));
9805 remote_get_noisy_reply (&target_buf
,
9807 if (strcmp (target_buf
, "OK"))
9808 error (_("Error on target while setting tracepoints."));
9812 if (remote_protocol_packets
[PACKET_TracepointSource
].support
9817 strcpy (buf
, "QTDPsrc:");
9818 encode_source_string (t
->number
, loc
->address
,
9819 "at", t
->addr_string
, buf
+ strlen (buf
),
9820 2048 - strlen (buf
));
9823 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9824 if (strcmp (target_buf
, "OK"))
9825 warning (_("Target does not support source download."));
9829 strcpy (buf
, "QTDPsrc:");
9830 encode_source_string (t
->number
, loc
->address
,
9831 "cond", t
->cond_string
, buf
+ strlen (buf
),
9832 2048 - strlen (buf
));
9834 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9835 if (strcmp (target_buf
, "OK"))
9836 warning (_("Target does not support source download."));
9838 remote_download_command_source (t
->number
, loc
->address
,
9839 breakpoint_commands (t
));
9842 do_cleanups (old_chain
);
9847 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
9849 struct remote_state
*rs
= get_remote_state ();
9852 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
9853 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
9854 p
= rs
->buf
+ strlen (rs
->buf
);
9855 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
9856 error (_("Trace state variable name too long for tsv definition packet"));
9857 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
9860 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9861 if (*target_buf
== '\0')
9862 error (_("Target does not support this command."));
9863 if (strcmp (target_buf
, "OK") != 0)
9864 error (_("Error on target while downloading trace state variable."));
9868 remote_trace_set_readonly_regions (void)
9876 return; /* No information to give. */
9878 strcpy (target_buf
, "QTro");
9879 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9881 char tmp1
[40], tmp2
[40];
9883 if ((s
->flags
& SEC_LOAD
) == 0 ||
9884 /* (s->flags & SEC_CODE) == 0 || */
9885 (s
->flags
& SEC_READONLY
) == 0)
9889 vma
= bfd_get_section_vma (,s
);
9890 size
= bfd_get_section_size (s
);
9891 sprintf_vma (tmp1
, vma
);
9892 sprintf_vma (tmp2
, vma
+ size
);
9893 sprintf (target_buf
+ strlen (target_buf
),
9894 ":%s,%s", tmp1
, tmp2
);
9898 putpkt (target_buf
);
9899 getpkt (&target_buf
, &target_buf_size
, 0);
9904 remote_trace_start (void)
9907 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9908 if (*target_buf
== '\0')
9909 error (_("Target does not support this command."));
9910 if (strcmp (target_buf
, "OK") != 0)
9911 error (_("Bogus reply from target: %s"), target_buf
);
9915 remote_get_trace_status (struct trace_status
*ts
)
9918 /* FIXME we need to get register block size some other way. */
9919 extern int trace_regblock_size
;
9921 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
9923 putpkt ("qTStatus");
9924 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9926 /* If the remote target doesn't do tracing, flag it. */
9930 /* We're working with a live target. */
9933 /* Set some defaults. */
9934 ts
->running_known
= 0;
9935 ts
->stop_reason
= trace_stop_reason_unknown
;
9936 ts
->traceframe_count
= -1;
9937 ts
->buffer_free
= 0;
9940 error (_("Bogus trace status reply from target: %s"), target_buf
);
9942 parse_trace_status (p
, ts
);
9948 remote_trace_stop (void)
9951 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9952 if (*target_buf
== '\0')
9953 error (_("Target does not support this command."));
9954 if (strcmp (target_buf
, "OK") != 0)
9955 error (_("Bogus reply from target: %s"), target_buf
);
9959 remote_trace_find (enum trace_find_type type
, int num
,
9960 ULONGEST addr1
, ULONGEST addr2
,
9963 struct remote_state
*rs
= get_remote_state ();
9965 int target_frameno
= -1, target_tracept
= -1;
9968 strcpy (p
, "QTFrame:");
9969 p
= strchr (p
, '\0');
9973 sprintf (p
, "%x", num
);
9976 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
9979 sprintf (p
, "tdp:%x", num
);
9982 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9985 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9988 error (_("Unknown trace find type %d"), type
);
9992 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
9994 error (_("Target does not support this command."));
9996 while (reply
&& *reply
)
10001 target_frameno
= (int) strtol (p
, &reply
, 16);
10003 error (_("Unable to parse trace frame number"));
10004 if (target_frameno
== -1)
10009 target_tracept
= (int) strtol (p
, &reply
, 16);
10011 error (_("Unable to parse tracepoint number"));
10013 case 'O': /* "OK"? */
10014 if (reply
[1] == 'K' && reply
[2] == '\0')
10017 error (_("Bogus reply from target: %s"), reply
);
10020 error (_("Bogus reply from target: %s"), reply
);
10023 *tpp
= target_tracept
;
10024 return target_frameno
;
10028 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10030 struct remote_state
*rs
= get_remote_state ();
10034 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
10036 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10037 if (reply
&& *reply
)
10041 unpack_varlen_hex (reply
+ 1, &uval
);
10042 *val
= (LONGEST
) uval
;
10050 remote_save_trace_data (const char *filename
)
10052 struct remote_state
*rs
= get_remote_state ();
10056 strcpy (p
, "QTSave:");
10058 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10059 error (_("Remote file name too long for trace save packet"));
10060 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10063 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10064 if (*reply
!= '\0')
10065 error (_("Target does not support this command."));
10066 if (strcmp (reply
, "OK") != 0)
10067 error (_("Bogus reply from target: %s"), reply
);
10071 /* This is basically a memory transfer, but needs to be its own packet
10072 because we don't know how the target actually organizes its trace
10073 memory, plus we want to be able to ask for as much as possible, but
10074 not be unhappy if we don't get as much as we ask for. */
10077 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10079 struct remote_state
*rs
= get_remote_state ();
10085 strcpy (p
, "qTBuffer:");
10087 p
+= hexnumstr (p
, offset
);
10089 p
+= hexnumstr (p
, len
);
10093 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10094 if (reply
&& *reply
)
10096 /* 'l' by itself means we're at the end of the buffer and
10097 there is nothing more to get. */
10101 /* Convert the reply into binary. Limit the number of bytes to
10102 convert according to our passed-in buffer size, rather than
10103 what was returned in the packet; if the target is
10104 unexpectedly generous and gives us a bigger reply than we
10105 asked for, we don't want to crash. */
10106 rslt
= hex2bin (target_buf
, buf
, len
);
10110 /* Something went wrong, flag as an error. */
10115 remote_set_disconnected_tracing (int val
)
10117 struct remote_state
*rs
= get_remote_state ();
10119 if (rs
->disconnected_tracing
)
10123 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
10125 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10126 if (*reply
== '\0')
10127 error (_("Target does not support this command."));
10128 if (strcmp (reply
, "OK") != 0)
10129 error (_("Bogus reply from target: %s"), reply
);
10132 warning (_("Target does not support disconnected tracing."));
10136 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10138 struct thread_info
*info
= find_thread_ptid (ptid
);
10140 if (info
&& info
->private)
10141 return info
->private->core
;
10146 remote_set_circular_trace_buffer (int val
)
10148 struct remote_state
*rs
= get_remote_state ();
10151 sprintf (rs
->buf
, "QTBuffer:circular:%x", val
);
10153 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10154 if (*reply
== '\0')
10155 error (_("Target does not support this command."));
10156 if (strcmp (reply
, "OK") != 0)
10157 error (_("Bogus reply from target: %s"), reply
);
10161 init_remote_ops (void)
10163 remote_ops
.to_shortname
= "remote";
10164 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
10165 remote_ops
.to_doc
=
10166 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10167 Specify the serial device it is connected to\n\
10168 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
10169 remote_ops
.to_open
= remote_open
;
10170 remote_ops
.to_close
= remote_close
;
10171 remote_ops
.to_detach
= remote_detach
;
10172 remote_ops
.to_disconnect
= remote_disconnect
;
10173 remote_ops
.to_resume
= remote_resume
;
10174 remote_ops
.to_wait
= remote_wait
;
10175 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
10176 remote_ops
.to_store_registers
= remote_store_registers
;
10177 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
10178 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
10179 remote_ops
.to_files_info
= remote_files_info
;
10180 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
10181 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
10182 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
10183 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
10184 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
10185 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
10186 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
10187 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
10188 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
10189 remote_ops
.to_kill
= remote_kill
;
10190 remote_ops
.to_load
= generic_load
;
10191 remote_ops
.to_mourn_inferior
= remote_mourn
;
10192 remote_ops
.to_notice_signals
= remote_notice_signals
;
10193 remote_ops
.to_thread_alive
= remote_thread_alive
;
10194 remote_ops
.to_find_new_threads
= remote_threads_info
;
10195 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
10196 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
10197 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
10198 remote_ops
.to_stop
= remote_stop
;
10199 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
10200 remote_ops
.to_rcmd
= remote_rcmd
;
10201 remote_ops
.to_log_command
= serial_log_command
;
10202 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
10203 remote_ops
.to_stratum
= process_stratum
;
10204 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
10205 remote_ops
.to_has_memory
= default_child_has_memory
;
10206 remote_ops
.to_has_stack
= default_child_has_stack
;
10207 remote_ops
.to_has_registers
= default_child_has_registers
;
10208 remote_ops
.to_has_execution
= default_child_has_execution
;
10209 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
10210 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
10211 remote_ops
.to_magic
= OPS_MAGIC
;
10212 remote_ops
.to_memory_map
= remote_memory_map
;
10213 remote_ops
.to_flash_erase
= remote_flash_erase
;
10214 remote_ops
.to_flash_done
= remote_flash_done
;
10215 remote_ops
.to_read_description
= remote_read_description
;
10216 remote_ops
.to_search_memory
= remote_search_memory
;
10217 remote_ops
.to_can_async_p
= remote_can_async_p
;
10218 remote_ops
.to_is_async_p
= remote_is_async_p
;
10219 remote_ops
.to_async
= remote_async
;
10220 remote_ops
.to_async_mask
= remote_async_mask
;
10221 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
10222 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
10223 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
10224 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
10225 remote_ops
.to_trace_init
= remote_trace_init
;
10226 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
10227 remote_ops
.to_download_trace_state_variable
10228 = remote_download_trace_state_variable
;
10229 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
10230 remote_ops
.to_trace_start
= remote_trace_start
;
10231 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
10232 remote_ops
.to_trace_stop
= remote_trace_stop
;
10233 remote_ops
.to_trace_find
= remote_trace_find
;
10234 remote_ops
.to_get_trace_state_variable_value
10235 = remote_get_trace_state_variable_value
;
10236 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
10237 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
10238 remote_ops
.to_upload_trace_state_variables
10239 = remote_upload_trace_state_variables
;
10240 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
10241 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
10242 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
10243 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
10244 remote_ops
.to_verify_memory
= remote_verify_memory
;
10245 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
10246 remote_ops
.to_set_permissions
= remote_set_permissions
;
10247 remote_ops
.to_static_tracepoint_marker_at
10248 = remote_static_tracepoint_marker_at
;
10249 remote_ops
.to_static_tracepoint_markers_by_strid
10250 = remote_static_tracepoint_markers_by_strid
;
10253 /* Set up the extended remote vector by making a copy of the standard
10254 remote vector and adding to it. */
10257 init_extended_remote_ops (void)
10259 extended_remote_ops
= remote_ops
;
10261 extended_remote_ops
.to_shortname
= "extended-remote";
10262 extended_remote_ops
.to_longname
=
10263 "Extended remote serial target in gdb-specific protocol";
10264 extended_remote_ops
.to_doc
=
10265 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10266 Specify the serial device it is connected to (e.g. /dev/ttya).";
10267 extended_remote_ops
.to_open
= extended_remote_open
;
10268 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
10269 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
10270 extended_remote_ops
.to_detach
= extended_remote_detach
;
10271 extended_remote_ops
.to_attach
= extended_remote_attach
;
10272 extended_remote_ops
.to_kill
= extended_remote_kill
;
10276 remote_can_async_p (void)
10278 if (!target_async_permitted
)
10279 /* We only enable async when the user specifically asks for it. */
10282 /* We're async whenever the serial device is. */
10283 return remote_async_mask_value
&& serial_can_async_p (remote_desc
);
10287 remote_is_async_p (void)
10289 if (!target_async_permitted
)
10290 /* We only enable async when the user specifically asks for it. */
10293 /* We're async whenever the serial device is. */
10294 return remote_async_mask_value
&& serial_is_async_p (remote_desc
);
10297 /* Pass the SERIAL event on and up to the client. One day this code
10298 will be able to delay notifying the client of an event until the
10299 point where an entire packet has been received. */
10301 static void (*async_client_callback
) (enum inferior_event_type event_type
,
10303 static void *async_client_context
;
10304 static serial_event_ftype remote_async_serial_handler
;
10307 remote_async_serial_handler (struct serial
*scb
, void *context
)
10309 /* Don't propogate error information up to the client. Instead let
10310 the client find out about the error by querying the target. */
10311 async_client_callback (INF_REG_EVENT
, async_client_context
);
10315 remote_async_inferior_event_handler (gdb_client_data data
)
10317 inferior_event_handler (INF_REG_EVENT
, NULL
);
10321 remote_async_get_pending_events_handler (gdb_client_data data
)
10323 remote_get_pending_stop_replies ();
10327 remote_async (void (*callback
) (enum inferior_event_type event_type
,
10328 void *context
), void *context
)
10330 if (remote_async_mask_value
== 0)
10331 internal_error (__FILE__
, __LINE__
,
10332 _("Calling remote_async when async is masked"));
10334 if (callback
!= NULL
)
10336 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
10337 async_client_callback
= callback
;
10338 async_client_context
= context
;
10341 serial_async (remote_desc
, NULL
, NULL
);
10345 remote_async_mask (int new_mask
)
10347 int curr_mask
= remote_async_mask_value
;
10349 remote_async_mask_value
= new_mask
;
10354 set_remote_cmd (char *args
, int from_tty
)
10356 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
10360 show_remote_cmd (char *args
, int from_tty
)
10362 /* We can't just use cmd_show_list here, because we want to skip
10363 the redundant "show remote Z-packet" and the legacy aliases. */
10364 struct cleanup
*showlist_chain
;
10365 struct cmd_list_element
*list
= remote_show_cmdlist
;
10367 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
10368 for (; list
!= NULL
; list
= list
->next
)
10369 if (strcmp (list
->name
, "Z-packet") == 0)
10371 else if (list
->type
== not_set_cmd
)
10372 /* Alias commands are exactly like the original, except they
10373 don't have the normal type. */
10377 struct cleanup
*option_chain
10378 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
10380 ui_out_field_string (uiout
, "name", list
->name
);
10381 ui_out_text (uiout
, ": ");
10382 if (list
->type
== show_cmd
)
10383 do_setshow_command ((char *) NULL
, from_tty
, list
);
10385 cmd_func (list
, NULL
, from_tty
);
10386 /* Close the tuple. */
10387 do_cleanups (option_chain
);
10390 /* Close the tuple. */
10391 do_cleanups (showlist_chain
);
10395 /* Function to be called whenever a new objfile (shlib) is detected. */
10397 remote_new_objfile (struct objfile
*objfile
)
10399 if (remote_desc
!= 0) /* Have a remote connection. */
10400 remote_check_symbols (objfile
);
10403 /* Pull all the tracepoints defined on the target and create local
10404 data structures representing them. We don't want to create real
10405 tracepoints yet, we don't want to mess up the user's existing
10409 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
10411 struct remote_state
*rs
= get_remote_state ();
10414 /* Ask for a first packet of tracepoint definition. */
10416 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10418 while (*p
&& *p
!= 'l')
10420 parse_tracepoint_definition (p
, utpp
);
10421 /* Ask for another packet of tracepoint definition. */
10423 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10430 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
10432 struct remote_state
*rs
= get_remote_state ();
10435 /* Ask for a first packet of variable definition. */
10437 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10439 while (*p
&& *p
!= 'l')
10441 parse_tsv_definition (p
, utsvp
);
10442 /* Ask for another packet of variable definition. */
10444 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10451 _initialize_remote (void)
10453 struct remote_state
*rs
;
10454 struct cmd_list_element
*cmd
;
10457 /* architecture specific data */
10458 remote_gdbarch_data_handle
=
10459 gdbarch_data_register_post_init (init_remote_state
);
10460 remote_g_packet_data_handle
=
10461 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
10463 /* Initialize the per-target state. At the moment there is only one
10464 of these, not one per target. Only one target is active at a
10465 time. The default buffer size is unimportant; it will be expanded
10466 whenever a larger buffer is needed. */
10467 rs
= get_remote_state_raw ();
10468 rs
->buf_size
= 400;
10469 rs
->buf
= xmalloc (rs
->buf_size
);
10471 init_remote_ops ();
10472 add_target (&remote_ops
);
10474 init_extended_remote_ops ();
10475 add_target (&extended_remote_ops
);
10477 /* Hook into new objfile notification. */
10478 observer_attach_new_objfile (remote_new_objfile
);
10480 /* Set up signal handlers. */
10481 sigint_remote_token
=
10482 create_async_signal_handler (async_remote_interrupt
, NULL
);
10483 sigint_remote_twice_token
=
10484 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
10487 init_remote_threadtests ();
10490 /* set/show remote ... */
10492 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
10493 Remote protocol specific variables\n\
10494 Configure various remote-protocol specific variables such as\n\
10495 the packets being used"),
10496 &remote_set_cmdlist
, "set remote ",
10497 0 /* allow-unknown */, &setlist
);
10498 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
10499 Remote protocol specific variables\n\
10500 Configure various remote-protocol specific variables such as\n\
10501 the packets being used"),
10502 &remote_show_cmdlist
, "show remote ",
10503 0 /* allow-unknown */, &showlist
);
10505 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
10506 Compare section data on target to the exec file.\n\
10507 Argument is a single section name (default: all loaded sections)."),
10510 add_cmd ("packet", class_maintenance
, packet_command
, _("\
10511 Send an arbitrary packet to a remote target.\n\
10512 maintenance packet TEXT\n\
10513 If GDB is talking to an inferior via the GDB serial protocol, then\n\
10514 this command sends the string TEXT to the inferior, and displays the\n\
10515 response packet. GDB supplies the initial `$' character, and the\n\
10516 terminating `#' character and checksum."),
10519 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
10520 Set whether to send break if interrupted."), _("\
10521 Show whether to send break if interrupted."), _("\
10522 If set, a break, instead of a cntrl-c, is sent to the remote target."),
10523 set_remotebreak
, show_remotebreak
,
10524 &setlist
, &showlist
);
10525 cmd_name
= "remotebreak";
10526 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
10527 deprecate_cmd (cmd
, "set remote interrupt-sequence");
10528 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
10529 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
10530 deprecate_cmd (cmd
, "show remote interrupt-sequence");
10532 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
10533 interrupt_sequence_modes
, &interrupt_sequence_mode
,
10535 Set interrupt sequence to remote target."), _("\
10536 Show interrupt sequence to remote target."), _("\
10537 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
10538 NULL
, show_interrupt_sequence
,
10539 &remote_set_cmdlist
,
10540 &remote_show_cmdlist
);
10542 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
10543 &interrupt_on_connect
, _("\
10544 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10545 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10546 If set, interrupt sequence is sent to remote target."),
10548 &remote_set_cmdlist
, &remote_show_cmdlist
);
10550 /* Install commands for configuring memory read/write packets. */
10552 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
10553 Set the maximum number of bytes per memory write packet (deprecated)."),
10555 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
10556 Show the maximum number of bytes per memory write packet (deprecated)."),
10558 add_cmd ("memory-write-packet-size", no_class
,
10559 set_memory_write_packet_size
, _("\
10560 Set the maximum number of bytes per memory-write packet.\n\
10561 Specify the number of bytes in a packet or 0 (zero) for the\n\
10562 default packet size. The actual limit is further reduced\n\
10563 dependent on the target. Specify ``fixed'' to disable the\n\
10564 further restriction and ``limit'' to enable that restriction."),
10565 &remote_set_cmdlist
);
10566 add_cmd ("memory-read-packet-size", no_class
,
10567 set_memory_read_packet_size
, _("\
10568 Set the maximum number of bytes per memory-read packet.\n\
10569 Specify the number of bytes in a packet or 0 (zero) for the\n\
10570 default packet size. The actual limit is further reduced\n\
10571 dependent on the target. Specify ``fixed'' to disable the\n\
10572 further restriction and ``limit'' to enable that restriction."),
10573 &remote_set_cmdlist
);
10574 add_cmd ("memory-write-packet-size", no_class
,
10575 show_memory_write_packet_size
,
10576 _("Show the maximum number of bytes per memory-write packet."),
10577 &remote_show_cmdlist
);
10578 add_cmd ("memory-read-packet-size", no_class
,
10579 show_memory_read_packet_size
,
10580 _("Show the maximum number of bytes per memory-read packet."),
10581 &remote_show_cmdlist
);
10583 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
10584 &remote_hw_watchpoint_limit
, _("\
10585 Set the maximum number of target hardware watchpoints."), _("\
10586 Show the maximum number of target hardware watchpoints."), _("\
10587 Specify a negative limit for unlimited."),
10588 NULL
, NULL
, /* FIXME: i18n: The maximum
10589 number of target hardware
10590 watchpoints is %s. */
10591 &remote_set_cmdlist
, &remote_show_cmdlist
);
10592 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
10593 &remote_hw_breakpoint_limit
, _("\
10594 Set the maximum number of target hardware breakpoints."), _("\
10595 Show the maximum number of target hardware breakpoints."), _("\
10596 Specify a negative limit for unlimited."),
10597 NULL
, NULL
, /* FIXME: i18n: The maximum
10598 number of target hardware
10599 breakpoints is %s. */
10600 &remote_set_cmdlist
, &remote_show_cmdlist
);
10602 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
10603 &remote_address_size
, _("\
10604 Set the maximum size of the address (in bits) in a memory packet."), _("\
10605 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
10607 NULL
, /* FIXME: i18n: */
10608 &setlist
, &showlist
);
10610 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
10611 "X", "binary-download", 1);
10613 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
10614 "vCont", "verbose-resume", 0);
10616 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
10617 "QPassSignals", "pass-signals", 0);
10619 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
10620 "qSymbol", "symbol-lookup", 0);
10622 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
10623 "P", "set-register", 1);
10625 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
10626 "p", "fetch-register", 1);
10628 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
10629 "Z0", "software-breakpoint", 0);
10631 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
10632 "Z1", "hardware-breakpoint", 0);
10634 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
10635 "Z2", "write-watchpoint", 0);
10637 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
10638 "Z3", "read-watchpoint", 0);
10640 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
10641 "Z4", "access-watchpoint", 0);
10643 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
10644 "qXfer:auxv:read", "read-aux-vector", 0);
10646 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
10647 "qXfer:features:read", "target-features", 0);
10649 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
10650 "qXfer:libraries:read", "library-info", 0);
10652 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
10653 "qXfer:memory-map:read", "memory-map", 0);
10655 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
10656 "qXfer:spu:read", "read-spu-object", 0);
10658 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
10659 "qXfer:spu:write", "write-spu-object", 0);
10661 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
10662 "qXfer:osdata:read", "osdata", 0);
10664 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
10665 "qXfer:threads:read", "threads", 0);
10667 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
10668 "qXfer:siginfo:read", "read-siginfo-object", 0);
10670 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
10671 "qXfer:siginfo:write", "write-siginfo-object", 0);
10673 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
10674 "qGetTLSAddr", "get-thread-local-storage-address",
10677 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
10678 "qGetTIBAddr", "get-thread-information-block-address",
10681 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
10682 "bc", "reverse-continue", 0);
10684 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
10685 "bs", "reverse-step", 0);
10687 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
10688 "qSupported", "supported-packets", 0);
10690 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
10691 "qSearch:memory", "search-memory", 0);
10693 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
10694 "vFile:open", "hostio-open", 0);
10696 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
10697 "vFile:pread", "hostio-pread", 0);
10699 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
10700 "vFile:pwrite", "hostio-pwrite", 0);
10702 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
10703 "vFile:close", "hostio-close", 0);
10705 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
10706 "vFile:unlink", "hostio-unlink", 0);
10708 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
10709 "vAttach", "attach", 0);
10711 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
10714 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
10715 "QStartNoAckMode", "noack", 0);
10717 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
10718 "vKill", "kill", 0);
10720 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
10721 "qAttached", "query-attached", 0);
10723 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
10724 "ConditionalTracepoints",
10725 "conditional-tracepoints", 0);
10726 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
10727 "FastTracepoints", "fast-tracepoints", 0);
10729 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
10730 "TracepointSource", "TracepointSource", 0);
10732 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
10733 "QAllow", "allow", 0);
10735 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
10736 "StaticTracepoints", "static-tracepoints", 0);
10738 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
10739 "qXfer:statictrace:read", "read-sdata-object", 0);
10741 /* Keep the old ``set remote Z-packet ...'' working. Each individual
10742 Z sub-packet has its own set and show commands, but users may
10743 have sets to this variable in their .gdbinit files (or in their
10745 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
10746 &remote_Z_packet_detect
, _("\
10747 Set use of remote protocol `Z' packets"), _("\
10748 Show use of remote protocol `Z' packets "), _("\
10749 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
10751 set_remote_protocol_Z_packet_cmd
,
10752 show_remote_protocol_Z_packet_cmd
,
10753 /* FIXME: i18n: Use of remote protocol
10754 `Z' packets is %s. */
10755 &remote_set_cmdlist
, &remote_show_cmdlist
);
10757 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
10758 Manipulate files on the remote system\n\
10759 Transfer files to and from the remote target system."),
10760 &remote_cmdlist
, "remote ",
10761 0 /* allow-unknown */, &cmdlist
);
10763 add_cmd ("put", class_files
, remote_put_command
,
10764 _("Copy a local file to the remote system."),
10767 add_cmd ("get", class_files
, remote_get_command
,
10768 _("Copy a remote file to the local system."),
10771 add_cmd ("delete", class_files
, remote_delete_command
,
10772 _("Delete a remote file."),
10775 remote_exec_file
= xstrdup ("");
10776 add_setshow_string_noescape_cmd ("exec-file", class_files
,
10777 &remote_exec_file
, _("\
10778 Set the remote pathname for \"run\""), _("\
10779 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
10780 &remote_set_cmdlist
, &remote_show_cmdlist
);
10782 /* Eventually initialize fileio. See fileio.c */
10783 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
10785 /* Take advantage of the fact that the LWP field is not used, to tag
10786 special ptids with it set to != 0. */
10787 magic_null_ptid
= ptid_build (42000, 1, -1);
10788 not_sent_ptid
= ptid_build (42000, 1, -2);
10789 any_thread_ptid
= ptid_build (42000, 1, 0);
10791 target_buf_size
= 2048;
10792 target_buf
= xmalloc (target_buf_size
);