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 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 is auto-detected, currently %s.\n"),
1046 config
->name
, support
);
1048 case AUTO_BOOLEAN_TRUE
:
1049 case AUTO_BOOLEAN_FALSE
:
1050 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1051 config
->name
, support
);
1057 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1058 const char *title
, int legacy
)
1064 config
->name
= name
;
1065 config
->title
= title
;
1066 config
->detect
= AUTO_BOOLEAN_AUTO
;
1067 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1068 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1070 show_doc
= xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
1072 /* set/show TITLE-packet {auto,on,off} */
1073 cmd_name
= xstrprintf ("%s-packet", title
);
1074 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1075 &config
->detect
, set_doc
, show_doc
, NULL
, /* help_doc */
1076 set_remote_protocol_packet_cmd
,
1077 show_remote_protocol_packet_cmd
,
1078 &remote_set_cmdlist
, &remote_show_cmdlist
);
1079 /* The command code copies the documentation strings. */
1082 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1087 legacy_name
= xstrprintf ("%s-packet", name
);
1088 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1089 &remote_set_cmdlist
);
1090 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1091 &remote_show_cmdlist
);
1095 static enum packet_result
1096 packet_check_result (const char *buf
)
1100 /* The stub recognized the packet request. Check that the
1101 operation succeeded. */
1103 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1105 /* "Enn" - definitly an error. */
1106 return PACKET_ERROR
;
1108 /* Always treat "E." as an error. This will be used for
1109 more verbose error messages, such as E.memtypes. */
1110 if (buf
[0] == 'E' && buf
[1] == '.')
1111 return PACKET_ERROR
;
1113 /* The packet may or may not be OK. Just assume it is. */
1117 /* The stub does not support the packet. */
1118 return PACKET_UNKNOWN
;
1121 static enum packet_result
1122 packet_ok (const char *buf
, struct packet_config
*config
)
1124 enum packet_result result
;
1126 result
= packet_check_result (buf
);
1131 /* The stub recognized the packet request. */
1132 switch (config
->support
)
1134 case PACKET_SUPPORT_UNKNOWN
:
1136 fprintf_unfiltered (gdb_stdlog
,
1137 "Packet %s (%s) is supported\n",
1138 config
->name
, config
->title
);
1139 config
->support
= PACKET_ENABLE
;
1141 case PACKET_DISABLE
:
1142 internal_error (__FILE__
, __LINE__
,
1143 _("packet_ok: attempt to use a disabled packet"));
1149 case PACKET_UNKNOWN
:
1150 /* The stub does not support the packet. */
1151 switch (config
->support
)
1154 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1155 /* If the stub previously indicated that the packet was
1156 supported then there is a protocol error.. */
1157 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1158 config
->name
, config
->title
);
1160 /* The user set it wrong. */
1161 error (_("Enabled packet %s (%s) not recognized by stub"),
1162 config
->name
, config
->title
);
1164 case PACKET_SUPPORT_UNKNOWN
:
1166 fprintf_unfiltered (gdb_stdlog
,
1167 "Packet %s (%s) is NOT supported\n",
1168 config
->name
, config
->title
);
1169 config
->support
= PACKET_DISABLE
;
1171 case PACKET_DISABLE
:
1193 PACKET_vFile_pwrite
,
1195 PACKET_vFile_unlink
,
1197 PACKET_qXfer_features
,
1198 PACKET_qXfer_libraries
,
1199 PACKET_qXfer_memory_map
,
1200 PACKET_qXfer_spu_read
,
1201 PACKET_qXfer_spu_write
,
1202 PACKET_qXfer_osdata
,
1203 PACKET_qXfer_threads
,
1204 PACKET_qXfer_statictrace_read
,
1208 PACKET_QPassSignals
,
1209 PACKET_qSearch_memory
,
1212 PACKET_QStartNoAckMode
,
1214 PACKET_qXfer_siginfo_read
,
1215 PACKET_qXfer_siginfo_write
,
1217 PACKET_ConditionalTracepoints
,
1218 PACKET_FastTracepoints
,
1219 PACKET_StaticTracepoints
,
1222 PACKET_TracepointSource
,
1227 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1230 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1231 struct cmd_list_element
*c
)
1233 struct packet_config
*packet
;
1235 for (packet
= remote_protocol_packets
;
1236 packet
< &remote_protocol_packets
[PACKET_MAX
];
1239 if (&packet
->detect
== c
->var
)
1241 update_packet_config (packet
);
1245 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1250 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1251 struct cmd_list_element
*c
,
1254 struct packet_config
*packet
;
1256 for (packet
= remote_protocol_packets
;
1257 packet
< &remote_protocol_packets
[PACKET_MAX
];
1260 if (&packet
->detect
== c
->var
)
1262 show_packet_config_cmd (packet
);
1266 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1270 /* Should we try one of the 'Z' requests? */
1274 Z_PACKET_SOFTWARE_BP
,
1275 Z_PACKET_HARDWARE_BP
,
1282 /* For compatibility with older distributions. Provide a ``set remote
1283 Z-packet ...'' command that updates all the Z packet types. */
1285 static enum auto_boolean remote_Z_packet_detect
;
1288 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1289 struct cmd_list_element
*c
)
1293 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1295 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1296 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1301 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1302 struct cmd_list_element
*c
,
1307 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1309 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1313 /* Should we try the 'ThreadInfo' query packet?
1315 This variable (NOT available to the user: auto-detect only!)
1316 determines whether GDB will use the new, simpler "ThreadInfo"
1317 query or the older, more complex syntax for thread queries.
1318 This is an auto-detect variable (set to true at each connect,
1319 and set to false when the target fails to recognize it). */
1321 static int use_threadinfo_query
;
1322 static int use_threadextra_query
;
1324 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1325 static struct async_signal_handler
*sigint_remote_twice_token
;
1326 static struct async_signal_handler
*sigint_remote_token
;
1329 /* Asynchronous signal handle registered as event loop source for
1330 when we have pending events ready to be passed to the core. */
1332 static struct async_event_handler
*remote_async_inferior_event_token
;
1334 /* Asynchronous signal handle registered as event loop source for when
1335 the remote sent us a %Stop notification. The registered callback
1336 will do a vStopped sequence to pull the rest of the events out of
1337 the remote side into our event queue. */
1339 static struct async_event_handler
*remote_async_get_pending_events_token
;
1342 static ptid_t magic_null_ptid
;
1343 static ptid_t not_sent_ptid
;
1344 static ptid_t any_thread_ptid
;
1346 /* These are the threads which we last sent to the remote system. The
1347 TID member will be -1 for all or -2 for not sent yet. */
1349 static ptid_t general_thread
;
1350 static ptid_t continue_thread
;
1352 /* Find out if the stub attached to PID (and hence GDB should offer to
1353 detach instead of killing it when bailing out). */
1356 remote_query_attached (int pid
)
1358 struct remote_state
*rs
= get_remote_state ();
1360 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1363 if (remote_multi_process_p (rs
))
1364 sprintf (rs
->buf
, "qAttached:%x", pid
);
1366 sprintf (rs
->buf
, "qAttached");
1369 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1371 switch (packet_ok (rs
->buf
,
1372 &remote_protocol_packets
[PACKET_qAttached
]))
1375 if (strcmp (rs
->buf
, "1") == 0)
1379 warning (_("Remote failure reply: %s"), rs
->buf
);
1381 case PACKET_UNKNOWN
:
1388 /* Add PID to GDB's inferior table. Since we can be connected to a
1389 remote system before before knowing about any inferior, mark the
1390 target with execution when we find the first inferior. If ATTACHED
1391 is 1, then we had just attached to this inferior. If it is 0, then
1392 we just created this inferior. If it is -1, then try querying the
1393 remote stub to find out if it had attached to the inferior or
1396 static struct inferior
*
1397 remote_add_inferior (int pid
, int attached
)
1399 struct inferior
*inf
;
1401 /* Check whether this process we're learning about is to be
1402 considered attached, or if is to be considered to have been
1403 spawned by the stub. */
1405 attached
= remote_query_attached (pid
);
1407 if (gdbarch_has_global_solist (target_gdbarch
))
1409 /* If the target shares code across all inferiors, then every
1410 attach adds a new inferior. */
1411 inf
= add_inferior (pid
);
1413 /* ... and every inferior is bound to the same program space.
1414 However, each inferior may still have its own address
1416 inf
->aspace
= maybe_new_address_space ();
1417 inf
->pspace
= current_program_space
;
1421 /* In the traditional debugging scenario, there's a 1-1 match
1422 between program/address spaces. We simply bind the inferior
1423 to the program space's address space. */
1424 inf
= current_inferior ();
1425 inferior_appeared (inf
, pid
);
1428 inf
->attach_flag
= attached
;
1433 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1434 according to RUNNING. */
1437 remote_add_thread (ptid_t ptid
, int running
)
1441 set_executing (ptid
, running
);
1442 set_running (ptid
, running
);
1445 /* Come here when we learn about a thread id from the remote target.
1446 It may be the first time we hear about such thread, so take the
1447 opportunity to add it to GDB's thread list. In case this is the
1448 first time we're noticing its corresponding inferior, add it to
1449 GDB's inferior list as well. */
1452 remote_notice_new_inferior (ptid_t currthread
, int running
)
1454 /* If this is a new thread, add it to GDB's thread list.
1455 If we leave it up to WFI to do this, bad things will happen. */
1457 if (in_thread_list (currthread
) && is_exited (currthread
))
1459 /* We're seeing an event on a thread id we knew had exited.
1460 This has to be a new thread reusing the old id. Add it. */
1461 remote_add_thread (currthread
, running
);
1465 if (!in_thread_list (currthread
))
1467 struct inferior
*inf
= NULL
;
1468 int pid
= ptid_get_pid (currthread
);
1470 if (ptid_is_pid (inferior_ptid
)
1471 && pid
== ptid_get_pid (inferior_ptid
))
1473 /* inferior_ptid has no thread member yet. This can happen
1474 with the vAttach -> remote_wait,"TAAthread:" path if the
1475 stub doesn't support qC. This is the first stop reported
1476 after an attach, so this is the main thread. Update the
1477 ptid in the thread list. */
1478 if (in_thread_list (pid_to_ptid (pid
)))
1479 thread_change_ptid (inferior_ptid
, currthread
);
1482 remote_add_thread (currthread
, running
);
1483 inferior_ptid
= currthread
;
1488 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1490 /* inferior_ptid is not set yet. This can happen with the
1491 vRun -> remote_wait,"TAAthread:" path if the stub
1492 doesn't support qC. This is the first stop reported
1493 after an attach, so this is the main thread. Update the
1494 ptid in the thread list. */
1495 thread_change_ptid (inferior_ptid
, currthread
);
1499 /* When connecting to a target remote, or to a target
1500 extended-remote which already was debugging an inferior, we
1501 may not know about it yet. Add it before adding its child
1502 thread, so notifications are emitted in a sensible order. */
1503 if (!in_inferior_list (ptid_get_pid (currthread
)))
1504 inf
= remote_add_inferior (ptid_get_pid (currthread
), -1);
1506 /* This is really a new thread. Add it. */
1507 remote_add_thread (currthread
, running
);
1509 /* If we found a new inferior, let the common code do whatever
1510 it needs to with it (e.g., read shared libraries, insert
1513 notice_new_inferior (currthread
, running
, 0);
1517 /* Return the private thread data, creating it if necessary. */
1519 struct private_thread_info
*
1520 demand_private_info (ptid_t ptid
)
1522 struct thread_info
*info
= find_thread_ptid (ptid
);
1528 info
->private = xmalloc (sizeof (*(info
->private)));
1529 info
->private_dtor
= free_private_thread_info
;
1530 info
->private->core
= -1;
1531 info
->private->extra
= 0;
1534 return info
->private;
1537 /* Call this function as a result of
1538 1) A halt indication (T packet) containing a thread id
1539 2) A direct query of currthread
1540 3) Successful execution of set thread
1544 record_currthread (ptid_t currthread
)
1546 general_thread
= currthread
;
1549 static char *last_pass_packet
;
1551 /* If 'QPassSignals' is supported, tell the remote stub what signals
1552 it can simply pass through to the inferior without reporting. */
1555 remote_pass_signals (void)
1557 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1559 char *pass_packet
, *p
;
1560 int numsigs
= (int) TARGET_SIGNAL_LAST
;
1563 gdb_assert (numsigs
< 256);
1564 for (i
= 0; i
< numsigs
; i
++)
1566 if (signal_stop_state (i
) == 0
1567 && signal_print_state (i
) == 0
1568 && signal_pass_state (i
) == 1)
1571 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1572 strcpy (pass_packet
, "QPassSignals:");
1573 p
= pass_packet
+ strlen (pass_packet
);
1574 for (i
= 0; i
< numsigs
; i
++)
1576 if (signal_stop_state (i
) == 0
1577 && signal_print_state (i
) == 0
1578 && signal_pass_state (i
) == 1)
1581 *p
++ = tohex (i
>> 4);
1582 *p
++ = tohex (i
& 15);
1591 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1593 struct remote_state
*rs
= get_remote_state ();
1594 char *buf
= rs
->buf
;
1596 putpkt (pass_packet
);
1597 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1598 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1599 if (last_pass_packet
)
1600 xfree (last_pass_packet
);
1601 last_pass_packet
= pass_packet
;
1604 xfree (pass_packet
);
1609 remote_notice_signals (ptid_t ptid
)
1611 /* Update the remote on signals to silently pass, if they've
1613 remote_pass_signals ();
1616 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1617 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1618 thread. If GEN is set, set the general thread, if not, then set
1619 the step/continue thread. */
1621 set_thread (struct ptid ptid
, int gen
)
1623 struct remote_state
*rs
= get_remote_state ();
1624 ptid_t state
= gen
? general_thread
: continue_thread
;
1625 char *buf
= rs
->buf
;
1626 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1628 if (ptid_equal (state
, ptid
))
1632 *buf
++ = gen
? 'g' : 'c';
1633 if (ptid_equal (ptid
, magic_null_ptid
))
1634 xsnprintf (buf
, endbuf
- buf
, "0");
1635 else if (ptid_equal (ptid
, any_thread_ptid
))
1636 xsnprintf (buf
, endbuf
- buf
, "0");
1637 else if (ptid_equal (ptid
, minus_one_ptid
))
1638 xsnprintf (buf
, endbuf
- buf
, "-1");
1640 write_ptid (buf
, endbuf
, ptid
);
1642 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1644 general_thread
= ptid
;
1646 continue_thread
= ptid
;
1650 set_general_thread (struct ptid ptid
)
1652 set_thread (ptid
, 1);
1656 set_continue_thread (struct ptid ptid
)
1658 set_thread (ptid
, 0);
1661 /* Change the remote current process. Which thread within the process
1662 ends up selected isn't important, as long as it is the same process
1663 as what INFERIOR_PTID points to.
1665 This comes from that fact that there is no explicit notion of
1666 "selected process" in the protocol. The selected process for
1667 general operations is the process the selected general thread
1671 set_general_process (void)
1673 struct remote_state
*rs
= get_remote_state ();
1675 /* If the remote can't handle multiple processes, don't bother. */
1676 if (!remote_multi_process_p (rs
))
1679 /* We only need to change the remote current thread if it's pointing
1680 at some other process. */
1681 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1682 set_general_thread (inferior_ptid
);
1686 /* Return nonzero if the thread PTID is still alive on the remote
1690 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1692 struct remote_state
*rs
= get_remote_state ();
1695 if (ptid_equal (ptid
, magic_null_ptid
))
1696 /* The main thread is always alive. */
1699 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1700 /* The main thread is always alive. This can happen after a
1701 vAttach, if the remote side doesn't support
1706 endp
= rs
->buf
+ get_remote_packet_size ();
1709 write_ptid (p
, endp
, ptid
);
1712 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1713 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1716 /* About these extended threadlist and threadinfo packets. They are
1717 variable length packets but, the fields within them are often fixed
1718 length. They are redundent enough to send over UDP as is the
1719 remote protocol in general. There is a matching unit test module
1722 #define OPAQUETHREADBYTES 8
1724 /* a 64 bit opaque identifier */
1725 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1727 /* WARNING: This threadref data structure comes from the remote O.S.,
1728 libstub protocol encoding, and remote.c. it is not particularly
1731 /* Right now, the internal structure is int. We want it to be bigger.
1735 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1737 /* gdb_ext_thread_info is an internal GDB data structure which is
1738 equivalent to the reply of the remote threadinfo packet. */
1740 struct gdb_ext_thread_info
1742 threadref threadid
; /* External form of thread reference. */
1743 int active
; /* Has state interesting to GDB?
1745 char display
[256]; /* Brief state display, name,
1746 blocked/suspended. */
1747 char shortname
[32]; /* To be used to name threads. */
1748 char more_display
[256]; /* Long info, statistics, queue depth,
1752 /* The volume of remote transfers can be limited by submitting
1753 a mask containing bits specifying the desired information.
1754 Use a union of these values as the 'selection' parameter to
1755 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) >= get_remote_packet_size ())
2349 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2351 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2353 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2355 if (*rs
->buf
== '\0')
2359 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2362 if (!threadmatch (&echo_nextthread
, nextthread
))
2364 /* FIXME: This is a good reason to drop the packet. */
2365 /* Possably, there is a duplicate response. */
2367 retransmit immediatly - race conditions
2368 retransmit after timeout - yes
2370 wait for packet, then exit
2372 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2373 return 0; /* I choose simply exiting. */
2375 if (*result_count
<= 0)
2379 warning (_("RMT ERROR : failed to get remote thread list."));
2382 return result
; /* break; */
2384 if (*result_count
> result_limit
)
2387 warning (_("RMT ERROR: threadlist response longer than requested."));
2393 /* This is the interface between remote and threads, remotes upper
2396 /* remote_find_new_threads retrieves the thread list and for each
2397 thread in the list, looks up the thread in GDB's internal list,
2398 adding the thread if it does not already exist. This involves
2399 getting partial thread lists from the remote target so, polling the
2400 quit_flag is required. */
2403 /* About this many threadisds fit in a packet. */
2405 #define MAXTHREADLISTRESULTS 32
2408 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2411 int done
, i
, result_count
;
2415 static threadref nextthread
;
2416 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2421 if (loopcount
++ > looplimit
)
2424 warning (_("Remote fetch threadlist -infinite loop-."));
2427 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2428 &done
, &result_count
, resultthreadlist
))
2433 /* Clear for later iterations. */
2435 /* Setup to resume next batch of thread references, set nextthread. */
2436 if (result_count
>= 1)
2437 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2439 while (result_count
--)
2440 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2447 remote_newthread_step (threadref
*ref
, void *context
)
2449 int pid
= ptid_get_pid (inferior_ptid
);
2450 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2452 if (!in_thread_list (ptid
))
2454 return 1; /* continue iterator */
2457 #define CRAZY_MAX_THREADS 1000
2460 remote_current_thread (ptid_t oldpid
)
2462 struct remote_state
*rs
= get_remote_state ();
2465 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2466 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2467 return read_ptid (&rs
->buf
[2], NULL
);
2472 /* Find new threads for info threads command.
2473 * Original version, using John Metzler's thread protocol.
2477 remote_find_new_threads (void)
2479 remote_threadlist_iterator (remote_newthread_step
, 0,
2483 #if defined(HAVE_LIBEXPAT)
2485 typedef struct thread_item
2491 DEF_VEC_O(thread_item_t
);
2493 struct threads_parsing_context
2495 VEC (thread_item_t
) *items
;
2499 start_thread (struct gdb_xml_parser
*parser
,
2500 const struct gdb_xml_element
*element
,
2501 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2503 struct threads_parsing_context
*data
= user_data
;
2505 struct thread_item item
;
2508 id
= VEC_index (gdb_xml_value_s
, attributes
, 0)->value
;
2509 item
.ptid
= read_ptid (id
, NULL
);
2511 if (VEC_length (gdb_xml_value_s
, attributes
) > 1)
2512 item
.core
= *(ULONGEST
*) VEC_index (gdb_xml_value_s
, attributes
, 1)->value
;
2518 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2522 end_thread (struct gdb_xml_parser
*parser
,
2523 const struct gdb_xml_element
*element
,
2524 void *user_data
, const char *body_text
)
2526 struct threads_parsing_context
*data
= user_data
;
2528 if (body_text
&& *body_text
)
2529 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2532 const struct gdb_xml_attribute thread_attributes
[] = {
2533 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2534 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2535 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2538 const struct gdb_xml_element thread_children
[] = {
2539 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2542 const struct gdb_xml_element threads_children
[] = {
2543 { "thread", thread_attributes
, thread_children
,
2544 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2545 start_thread
, end_thread
},
2546 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2549 const struct gdb_xml_element threads_elements
[] = {
2550 { "threads", NULL
, threads_children
,
2551 GDB_XML_EF_NONE
, NULL
, NULL
},
2552 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2555 /* Discard the contents of the constructed thread info context. */
2558 clear_threads_parsing_context (void *p
)
2560 struct threads_parsing_context
*context
= p
;
2562 struct thread_item
*item
;
2564 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2565 xfree (item
->extra
);
2567 VEC_free (thread_item_t
, context
->items
);
2573 * Find all threads for info threads command.
2574 * Uses new thread protocol contributed by Cisco.
2575 * Falls back and attempts to use the older method (above)
2576 * if the target doesn't respond to the new method.
2580 remote_threads_info (struct target_ops
*ops
)
2582 struct remote_state
*rs
= get_remote_state ();
2586 if (remote_desc
== 0) /* paranoia */
2587 error (_("Command can only be used when connected to the remote target."));
2589 #if defined(HAVE_LIBEXPAT)
2590 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2592 char *xml
= target_read_stralloc (¤t_target
,
2593 TARGET_OBJECT_THREADS
, NULL
);
2595 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2598 struct gdb_xml_parser
*parser
;
2599 struct threads_parsing_context context
;
2600 struct cleanup
*clear_parsing_context
;
2603 /* Note: this parser cleanup is already guarded by BACK_TO
2605 parser
= gdb_xml_create_parser_and_cleanup (_("threads"),
2609 gdb_xml_use_dtd (parser
, "threads.dtd");
2611 clear_parsing_context
2612 = make_cleanup (clear_threads_parsing_context
, &context
);
2614 if (gdb_xml_parse (parser
, xml
) == 0)
2617 struct thread_item
*item
;
2619 for (i
= 0; VEC_iterate (thread_item_t
, context
.items
, i
, item
); ++i
)
2621 if (!ptid_equal (item
->ptid
, null_ptid
))
2623 struct private_thread_info
*info
;
2624 /* In non-stop mode, we assume new found threads
2625 are running until proven otherwise with a
2626 stop reply. In all-stop, we can only get
2627 here if all threads are stopped. */
2628 int running
= non_stop
? 1 : 0;
2630 remote_notice_new_inferior (item
->ptid
, running
);
2632 info
= demand_private_info (item
->ptid
);
2633 info
->core
= item
->core
;
2634 info
->extra
= item
->extra
;
2640 do_cleanups (clear_parsing_context
);
2643 do_cleanups (back_to
);
2648 if (use_threadinfo_query
)
2650 putpkt ("qfThreadInfo");
2651 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2653 if (bufp
[0] != '\0') /* q packet recognized */
2655 while (*bufp
++ == 'm') /* reply contains one or more TID */
2659 new_thread
= read_ptid (bufp
, &bufp
);
2660 if (!ptid_equal (new_thread
, null_ptid
))
2662 /* In non-stop mode, we assume new found threads
2663 are running until proven otherwise with a
2664 stop reply. In all-stop, we can only get
2665 here if all threads are stopped. */
2666 int running
= non_stop
? 1 : 0;
2668 remote_notice_new_inferior (new_thread
, running
);
2671 while (*bufp
++ == ','); /* comma-separated list */
2672 putpkt ("qsThreadInfo");
2673 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2680 /* Only qfThreadInfo is supported in non-stop mode. */
2684 /* Else fall back to old method based on jmetzler protocol. */
2685 use_threadinfo_query
= 0;
2686 remote_find_new_threads ();
2691 * Collect a descriptive string about the given thread.
2692 * The target may say anything it wants to about the thread
2693 * (typically info about its blocked / runnable state, name, etc.).
2694 * This string will appear in the info threads display.
2696 * Optional: targets are not required to implement this function.
2700 remote_threads_extra_info (struct thread_info
*tp
)
2702 struct remote_state
*rs
= get_remote_state ();
2706 struct gdb_ext_thread_info threadinfo
;
2707 static char display_buf
[100]; /* arbitrary... */
2708 int n
= 0; /* position in display_buf */
2710 if (remote_desc
== 0) /* paranoia */
2711 internal_error (__FILE__
, __LINE__
,
2712 _("remote_threads_extra_info"));
2714 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2715 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2716 /* This is the main thread which was added by GDB. The remote
2717 server doesn't know about it. */
2720 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2722 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2724 if (info
&& info
->private)
2725 return info
->private->extra
;
2730 if (use_threadextra_query
)
2733 char *endb
= rs
->buf
+ get_remote_packet_size ();
2735 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2737 write_ptid (b
, endb
, tp
->ptid
);
2740 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2741 if (rs
->buf
[0] != 0)
2743 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2744 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2745 display_buf
[result
] = '\0';
2750 /* If the above query fails, fall back to the old method. */
2751 use_threadextra_query
= 0;
2752 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2753 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2754 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2755 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2756 if (threadinfo
.active
)
2758 if (*threadinfo
.shortname
)
2759 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2760 " Name: %s,", threadinfo
.shortname
);
2761 if (*threadinfo
.display
)
2762 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2763 " State: %s,", threadinfo
.display
);
2764 if (*threadinfo
.more_display
)
2765 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2766 " Priority: %s", threadinfo
.more_display
);
2770 /* For purely cosmetic reasons, clear up trailing commas. */
2771 if (',' == display_buf
[n
-1])
2772 display_buf
[n
-1] = ' ';
2781 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2782 struct static_tracepoint_marker
*marker
)
2784 struct remote_state
*rs
= get_remote_state ();
2787 sprintf (p
, "qTSTMat:");
2789 p
+= hexnumstr (p
, addr
);
2791 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2795 error (_("Remote failure reply: %s"), p
);
2799 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2807 free_current_marker (void *arg
)
2809 struct static_tracepoint_marker
**marker_p
= arg
;
2811 if (*marker_p
!= NULL
)
2813 release_static_tracepoint_marker (*marker_p
);
2820 static VEC(static_tracepoint_marker_p
) *
2821 remote_static_tracepoint_markers_by_strid (const char *strid
)
2823 struct remote_state
*rs
= get_remote_state ();
2824 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2825 struct static_tracepoint_marker
*marker
= NULL
;
2826 struct cleanup
*old_chain
;
2829 /* Ask for a first packet of static tracepoint marker
2832 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2835 error (_("Remote failure reply: %s"), p
);
2837 old_chain
= make_cleanup (free_current_marker
, &marker
);
2842 marker
= XCNEW (struct static_tracepoint_marker
);
2846 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2848 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2850 VEC_safe_push (static_tracepoint_marker_p
,
2856 release_static_tracepoint_marker (marker
);
2857 memset (marker
, 0, sizeof (*marker
));
2860 while (*p
++ == ','); /* comma-separated list */
2861 /* Ask for another packet of static tracepoint definition. */
2863 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2867 do_cleanups (old_chain
);
2872 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2875 remote_get_ada_task_ptid (long lwp
, long thread
)
2877 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2881 /* Restart the remote side; this is an extended protocol operation. */
2884 extended_remote_restart (void)
2886 struct remote_state
*rs
= get_remote_state ();
2888 /* Send the restart command; for reasons I don't understand the
2889 remote side really expects a number after the "R". */
2890 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2893 remote_fileio_reset ();
2896 /* Clean up connection to a remote debugger. */
2899 remote_close (int quitting
)
2901 if (remote_desc
== NULL
)
2902 return; /* already closed */
2904 /* Make sure we leave stdin registered in the event loop, and we
2905 don't leave the async SIGINT signal handler installed. */
2906 remote_terminal_ours ();
2908 serial_close (remote_desc
);
2911 /* We don't have a connection to the remote stub anymore. Get rid
2912 of all the inferiors and their threads we were controlling. */
2913 discard_all_inferiors ();
2914 inferior_ptid
= null_ptid
;
2916 /* We're no longer interested in any of these events. */
2917 discard_pending_stop_replies (-1);
2919 if (remote_async_inferior_event_token
)
2920 delete_async_event_handler (&remote_async_inferior_event_token
);
2921 if (remote_async_get_pending_events_token
)
2922 delete_async_event_handler (&remote_async_get_pending_events_token
);
2925 /* Query the remote side for the text, data and bss offsets. */
2930 struct remote_state
*rs
= get_remote_state ();
2933 int lose
, num_segments
= 0, do_sections
, do_segments
;
2934 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2935 struct section_offsets
*offs
;
2936 struct symfile_segment_data
*data
;
2938 if (symfile_objfile
== NULL
)
2941 putpkt ("qOffsets");
2942 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2945 if (buf
[0] == '\000')
2946 return; /* Return silently. Stub doesn't support
2950 warning (_("Remote failure reply: %s"), buf
);
2954 /* Pick up each field in turn. This used to be done with scanf, but
2955 scanf will make trouble if CORE_ADDR size doesn't match
2956 conversion directives correctly. The following code will work
2957 with any size of CORE_ADDR. */
2958 text_addr
= data_addr
= bss_addr
= 0;
2962 if (strncmp (ptr
, "Text=", 5) == 0)
2965 /* Don't use strtol, could lose on big values. */
2966 while (*ptr
&& *ptr
!= ';')
2967 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2969 if (strncmp (ptr
, ";Data=", 6) == 0)
2972 while (*ptr
&& *ptr
!= ';')
2973 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2978 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
2981 while (*ptr
&& *ptr
!= ';')
2982 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
2984 if (bss_addr
!= data_addr
)
2985 warning (_("Target reported unsupported offsets: %s"), buf
);
2990 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
2993 /* Don't use strtol, could lose on big values. */
2994 while (*ptr
&& *ptr
!= ';')
2995 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2998 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3001 while (*ptr
&& *ptr
!= ';')
3002 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3010 error (_("Malformed response to offset query, %s"), buf
);
3011 else if (*ptr
!= '\0')
3012 warning (_("Target reported unsupported offsets: %s"), buf
);
3014 offs
= ((struct section_offsets
*)
3015 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3016 memcpy (offs
, symfile_objfile
->section_offsets
,
3017 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3019 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3020 do_segments
= (data
!= NULL
);
3021 do_sections
= num_segments
== 0;
3023 if (num_segments
> 0)
3025 segments
[0] = text_addr
;
3026 segments
[1] = data_addr
;
3028 /* If we have two segments, we can still try to relocate everything
3029 by assuming that the .text and .data offsets apply to the whole
3030 text and data segments. Convert the offsets given in the packet
3031 to base addresses for symfile_map_offsets_to_segments. */
3032 else if (data
&& data
->num_segments
== 2)
3034 segments
[0] = data
->segment_bases
[0] + text_addr
;
3035 segments
[1] = data
->segment_bases
[1] + data_addr
;
3038 /* If the object file has only one segment, assume that it is text
3039 rather than data; main programs with no writable data are rare,
3040 but programs with no code are useless. Of course the code might
3041 have ended up in the data segment... to detect that we would need
3042 the permissions here. */
3043 else if (data
&& data
->num_segments
== 1)
3045 segments
[0] = data
->segment_bases
[0] + text_addr
;
3048 /* There's no way to relocate by segment. */
3054 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3055 offs
, num_segments
, segments
);
3057 if (ret
== 0 && !do_sections
)
3058 error (_("Can not handle qOffsets TextSeg response with this symbol file"));
3065 free_symfile_segment_data (data
);
3069 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3071 /* This is a temporary kludge to force data and bss to use the same offsets
3072 because that's what nlmconv does now. The real solution requires changes
3073 to the stub and remote.c that I don't have time to do right now. */
3075 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3076 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3079 objfile_relocate (symfile_objfile
, offs
);
3082 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3083 threads we know are stopped already. This is used during the
3084 initial remote connection in non-stop mode --- threads that are
3085 reported as already being stopped are left stopped. */
3088 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3090 /* If we have a stop reply for this thread, it must be stopped. */
3091 if (peek_stop_reply (thread
->ptid
))
3092 set_stop_requested (thread
->ptid
, 1);
3097 /* Stub for catch_exception. */
3099 struct start_remote_args
3103 /* The current target. */
3104 struct target_ops
*target
;
3106 /* Non-zero if this is an extended-remote target. */
3110 /* Send interrupt_sequence to remote target. */
3112 send_interrupt_sequence ()
3114 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3115 serial_write (remote_desc
, "\x03", 1);
3116 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3117 serial_send_break (remote_desc
);
3118 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3120 serial_send_break (remote_desc
);
3121 serial_write (remote_desc
, "g", 1);
3124 internal_error (__FILE__
, __LINE__
,
3125 _("Invalid value for interrupt_sequence_mode: %s."),
3126 interrupt_sequence_mode
);
3130 remote_start_remote (struct ui_out
*uiout
, void *opaque
)
3132 struct start_remote_args
*args
= opaque
;
3133 struct remote_state
*rs
= get_remote_state ();
3134 struct packet_config
*noack_config
;
3135 char *wait_status
= NULL
;
3137 immediate_quit
++; /* Allow user to interrupt it. */
3139 /* Ack any packet which the remote side has already sent. */
3140 serial_write (remote_desc
, "+", 1);
3142 if (interrupt_on_connect
)
3143 send_interrupt_sequence ();
3145 /* The first packet we send to the target is the optional "supported
3146 packets" request. If the target can answer this, it will tell us
3147 which later probes to skip. */
3148 remote_query_supported ();
3150 /* If the stub wants to get a QAllow, compose one and send it. */
3151 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3152 remote_set_permissions ();
3154 /* Next, we possibly activate noack mode.
3156 If the QStartNoAckMode packet configuration is set to AUTO,
3157 enable noack mode if the stub reported a wish for it with
3160 If set to TRUE, then enable noack mode even if the stub didn't
3161 report it in qSupported. If the stub doesn't reply OK, the
3162 session ends with an error.
3164 If FALSE, then don't activate noack mode, regardless of what the
3165 stub claimed should be the default with qSupported. */
3167 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3169 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3170 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3171 && noack_config
->support
== PACKET_ENABLE
))
3173 putpkt ("QStartNoAckMode");
3174 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3175 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3179 if (args
->extended_p
)
3181 /* Tell the remote that we are using the extended protocol. */
3183 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3186 /* Next, if the target can specify a description, read it. We do
3187 this before anything involving memory or registers. */
3188 target_find_description ();
3190 /* Next, now that we know something about the target, update the
3191 address spaces in the program spaces. */
3192 update_address_spaces ();
3194 /* On OSs where the list of libraries is global to all
3195 processes, we fetch them early. */
3196 if (gdbarch_has_global_solist (target_gdbarch
))
3197 solib_add (NULL
, args
->from_tty
, args
->target
, auto_solib_add
);
3201 if (!rs
->non_stop_aware
)
3202 error (_("Non-stop mode requested, but remote does not support non-stop"));
3204 putpkt ("QNonStop:1");
3205 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3207 if (strcmp (rs
->buf
, "OK") != 0)
3208 error ("Remote refused setting non-stop mode with: %s", rs
->buf
);
3210 /* Find about threads and processes the stub is already
3211 controlling. We default to adding them in the running state.
3212 The '?' query below will then tell us about which threads are
3214 remote_threads_info (args
->target
);
3216 else if (rs
->non_stop_aware
)
3218 /* Don't assume that the stub can operate in all-stop mode.
3219 Request it explicitely. */
3220 putpkt ("QNonStop:0");
3221 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3223 if (strcmp (rs
->buf
, "OK") != 0)
3224 error ("Remote refused setting all-stop mode with: %s", rs
->buf
);
3227 /* Check whether the target is running now. */
3229 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3233 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3235 if (!args
->extended_p
)
3236 error (_("The target is not running (try extended-remote?)"));
3238 /* We're connected, but not running. Drop out before we
3239 call start_remote. */
3244 /* Save the reply for later. */
3245 wait_status
= alloca (strlen (rs
->buf
) + 1);
3246 strcpy (wait_status
, rs
->buf
);
3249 /* Let the stub know that we want it to return the thread. */
3250 set_continue_thread (minus_one_ptid
);
3252 /* Without this, some commands which require an active target
3253 (such as kill) won't work. This variable serves (at least)
3254 double duty as both the pid of the target process (if it has
3255 such), and as a flag indicating that a target is active.
3256 These functions should be split out into seperate variables,
3257 especially since GDB will someday have a notion of debugging
3258 several processes. */
3259 inferior_ptid
= magic_null_ptid
;
3261 /* Now, if we have thread information, update inferior_ptid. */
3262 inferior_ptid
= remote_current_thread (inferior_ptid
);
3264 remote_add_inferior (ptid_get_pid (inferior_ptid
), -1);
3266 /* Always add the main thread. */
3267 add_thread_silent (inferior_ptid
);
3269 get_offsets (); /* Get text, data & bss offsets. */
3271 /* If we could not find a description using qXfer, and we know
3272 how to do it some other way, try again. This is not
3273 supported for non-stop; it could be, but it is tricky if
3274 there are no stopped threads when we connect. */
3275 if (remote_read_description_p (args
->target
)
3276 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3278 target_clear_description ();
3279 target_find_description ();
3282 /* Use the previously fetched status. */
3283 gdb_assert (wait_status
!= NULL
);
3284 strcpy (rs
->buf
, wait_status
);
3285 rs
->cached_wait_status
= 1;
3288 start_remote (args
->from_tty
); /* Initialize gdb process mechanisms. */
3292 /* Clear WFI global state. Do this before finding about new
3293 threads and inferiors, and setting the current inferior.
3294 Otherwise we would clear the proceed status of the current
3295 inferior when we want its stop_soon state to be preserved
3296 (see notice_new_inferior). */
3297 init_wait_for_inferior ();
3299 /* In non-stop, we will either get an "OK", meaning that there
3300 are no stopped threads at this time; or, a regular stop
3301 reply. In the latter case, there may be more than one thread
3302 stopped --- we pull them all out using the vStopped
3304 if (strcmp (rs
->buf
, "OK") != 0)
3306 struct stop_reply
*stop_reply
;
3307 struct cleanup
*old_chain
;
3309 stop_reply
= stop_reply_xmalloc ();
3310 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3312 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3313 discard_cleanups (old_chain
);
3315 /* get_pending_stop_replies acks this one, and gets the rest
3317 pending_stop_reply
= stop_reply
;
3318 remote_get_pending_stop_replies ();
3320 /* Make sure that threads that were stopped remain
3322 iterate_over_threads (set_stop_requested_callback
, NULL
);
3325 if (target_can_async_p ())
3326 target_async (inferior_event_handler
, 0);
3328 if (thread_count () == 0)
3330 if (!args
->extended_p
)
3331 error (_("The target is not running (try extended-remote?)"));
3333 /* We're connected, but not running. Drop out before we
3334 call start_remote. */
3338 /* Let the stub know that we want it to return the thread. */
3340 /* Force the stub to choose a thread. */
3341 set_general_thread (null_ptid
);
3344 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3345 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3346 error (_("remote didn't report the current thread in non-stop mode"));
3348 get_offsets (); /* Get text, data & bss offsets. */
3350 /* In non-stop mode, any cached wait status will be stored in
3351 the stop reply queue. */
3352 gdb_assert (wait_status
== NULL
);
3354 /* Update the remote on signals to silently pass, or more
3355 importantly, which to not ignore, in case a previous session
3356 had set some different set of signals to be ignored. */
3357 remote_pass_signals ();
3360 /* If we connected to a live target, do some additional setup. */
3361 if (target_has_execution
)
3363 if (exec_bfd
) /* No use without an exec file. */
3364 remote_check_symbols (symfile_objfile
);
3367 /* Possibly the target has been engaged in a trace run started
3368 previously; find out where things are at. */
3369 if (remote_get_trace_status (current_trace_status ()) != -1)
3371 struct uploaded_tp
*uploaded_tps
= NULL
;
3372 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3374 if (current_trace_status ()->running
)
3375 printf_filtered (_("Trace is already running on the target.\n"));
3377 /* Get trace state variables first, they may be checked when
3378 parsing uploaded commands. */
3380 remote_upload_trace_state_variables (&uploaded_tsvs
);
3382 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3384 remote_upload_tracepoints (&uploaded_tps
);
3386 merge_uploaded_tracepoints (&uploaded_tps
);
3389 /* If breakpoints are global, insert them now. */
3390 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3391 && breakpoints_always_inserted_mode ())
3392 insert_breakpoints ();
3395 /* Open a connection to a remote debugger.
3396 NAME is the filename used for communication. */
3399 remote_open (char *name
, int from_tty
)
3401 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3404 /* Open a connection to a remote debugger using the extended
3405 remote gdb protocol. NAME is the filename used for communication. */
3408 extended_remote_open (char *name
, int from_tty
)
3410 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3413 /* Generic code for opening a connection to a remote target. */
3416 init_all_packet_configs (void)
3420 for (i
= 0; i
< PACKET_MAX
; i
++)
3421 update_packet_config (&remote_protocol_packets
[i
]);
3424 /* Symbol look-up. */
3427 remote_check_symbols (struct objfile
*objfile
)
3429 struct remote_state
*rs
= get_remote_state ();
3430 char *msg
, *reply
, *tmp
;
3431 struct minimal_symbol
*sym
;
3434 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3437 /* Make sure the remote is pointing at the right process. */
3438 set_general_process ();
3440 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3441 because we need both at the same time. */
3442 msg
= alloca (get_remote_packet_size ());
3444 /* Invite target to request symbol lookups. */
3446 putpkt ("qSymbol::");
3447 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3448 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3451 while (strncmp (reply
, "qSymbol:", 8) == 0)
3454 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3456 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3458 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3461 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3462 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3464 /* If this is a function address, return the start of code
3465 instead of any data function descriptor. */
3466 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3470 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3471 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3475 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3480 static struct serial
*
3481 remote_serial_open (char *name
)
3483 static int udp_warning
= 0;
3485 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3486 of in ser-tcp.c, because it is the remote protocol assuming that the
3487 serial connection is reliable and not the serial connection promising
3489 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3492 The remote protocol may be unreliable over UDP.\n\
3493 Some events may be lost, rendering further debugging impossible."));
3497 return serial_open (name
);
3500 /* Inform the target of our permission settings. The permission flags
3501 work without this, but if the target knows the settings, it can do
3502 a couple things. First, it can add its own check, to catch cases
3503 that somehow manage to get by the permissions checks in target
3504 methods. Second, if the target is wired to disallow particular
3505 settings (for instance, a system in the field that is not set up to
3506 be able to stop at a breakpoint), it can object to any unavailable
3510 remote_set_permissions (void)
3512 struct remote_state
*rs
= get_remote_state ();
3514 sprintf (rs
->buf
, "QAllow:"
3515 "WriteReg:%x;WriteMem:%x;"
3516 "InsertBreak:%x;InsertTrace:%x;"
3517 "InsertFastTrace:%x;Stop:%x",
3518 may_write_registers
, may_write_memory
,
3519 may_insert_breakpoints
, may_insert_tracepoints
,
3520 may_insert_fast_tracepoints
, may_stop
);
3522 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3524 /* If the target didn't like the packet, warn the user. Do not try
3525 to undo the user's settings, that would just be maddening. */
3526 if (strcmp (rs
->buf
, "OK") != 0)
3527 warning ("Remote refused setting permissions with: %s", rs
->buf
);
3530 /* This type describes each known response to the qSupported
3532 struct protocol_feature
3534 /* The name of this protocol feature. */
3537 /* The default for this protocol feature. */
3538 enum packet_support default_support
;
3540 /* The function to call when this feature is reported, or after
3541 qSupported processing if the feature is not supported.
3542 The first argument points to this structure. The second
3543 argument indicates whether the packet requested support be
3544 enabled, disabled, or probed (or the default, if this function
3545 is being called at the end of processing and this feature was
3546 not reported). The third argument may be NULL; if not NULL, it
3547 is a NUL-terminated string taken from the packet following
3548 this feature's name and an equals sign. */
3549 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3552 /* The corresponding packet for this feature. Only used if
3553 FUNC is remote_supported_packet. */
3558 remote_supported_packet (const struct protocol_feature
*feature
,
3559 enum packet_support support
,
3560 const char *argument
)
3564 warning (_("Remote qSupported response supplied an unexpected value for"
3565 " \"%s\"."), feature
->name
);
3569 if (remote_protocol_packets
[feature
->packet
].support
3570 == PACKET_SUPPORT_UNKNOWN
)
3571 remote_protocol_packets
[feature
->packet
].support
= support
;
3575 remote_packet_size (const struct protocol_feature
*feature
,
3576 enum packet_support support
, const char *value
)
3578 struct remote_state
*rs
= get_remote_state ();
3583 if (support
!= PACKET_ENABLE
)
3586 if (value
== NULL
|| *value
== '\0')
3588 warning (_("Remote target reported \"%s\" without a size."),
3594 packet_size
= strtol (value
, &value_end
, 16);
3595 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3597 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3598 feature
->name
, value
);
3602 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3604 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3605 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3606 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3609 /* Record the new maximum packet size. */
3610 rs
->explicit_packet_size
= packet_size
;
3614 remote_multi_process_feature (const struct protocol_feature
*feature
,
3615 enum packet_support support
, const char *value
)
3617 struct remote_state
*rs
= get_remote_state ();
3619 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3623 remote_non_stop_feature (const struct protocol_feature
*feature
,
3624 enum packet_support support
, const char *value
)
3626 struct remote_state
*rs
= get_remote_state ();
3628 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3632 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3633 enum packet_support support
,
3636 struct remote_state
*rs
= get_remote_state ();
3638 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3642 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3643 enum packet_support support
,
3646 struct remote_state
*rs
= get_remote_state ();
3648 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3652 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3653 enum packet_support support
,
3656 struct remote_state
*rs
= get_remote_state ();
3658 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3662 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3663 enum packet_support support
,
3666 struct remote_state
*rs
= get_remote_state ();
3668 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3671 static struct protocol_feature remote_protocol_features
[] = {
3672 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3673 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3674 PACKET_qXfer_auxv
},
3675 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3676 PACKET_qXfer_features
},
3677 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3678 PACKET_qXfer_libraries
},
3679 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3680 PACKET_qXfer_memory_map
},
3681 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3682 PACKET_qXfer_spu_read
},
3683 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3684 PACKET_qXfer_spu_write
},
3685 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3686 PACKET_qXfer_osdata
},
3687 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3688 PACKET_qXfer_threads
},
3689 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3690 PACKET_QPassSignals
},
3691 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3692 PACKET_QStartNoAckMode
},
3693 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3694 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3695 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3696 PACKET_qXfer_siginfo_read
},
3697 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3698 PACKET_qXfer_siginfo_write
},
3699 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3700 PACKET_ConditionalTracepoints
},
3701 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3702 PACKET_FastTracepoints
},
3703 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3704 PACKET_StaticTracepoints
},
3705 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3707 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3709 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3711 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3712 PACKET_TracepointSource
},
3713 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3717 static char *remote_support_xml
;
3719 /* Register string appended to "xmlRegisters=" in qSupported query. */
3722 register_remote_support_xml (const char *xml
)
3724 #if defined(HAVE_LIBEXPAT)
3725 if (remote_support_xml
== NULL
)
3726 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3729 char *copy
= xstrdup (remote_support_xml
+ 13);
3730 char *p
= strtok (copy
, ",");
3734 if (strcmp (p
, xml
) == 0)
3741 while ((p
= strtok (NULL
, ",")) != NULL
);
3744 remote_support_xml
= reconcat (remote_support_xml
,
3745 remote_support_xml
, ",", xml
,
3752 remote_query_supported_append (char *msg
, const char *append
)
3755 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3757 return xstrdup (append
);
3761 remote_query_supported (void)
3763 struct remote_state
*rs
= get_remote_state ();
3766 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3768 /* The packet support flags are handled differently for this packet
3769 than for most others. We treat an error, a disabled packet, and
3770 an empty response identically: any features which must be reported
3771 to be used will be automatically disabled. An empty buffer
3772 accomplishes this, since that is also the representation for a list
3773 containing no features. */
3776 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3779 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
3782 q
= remote_query_supported_append (q
, "multiprocess+");
3784 if (remote_support_xml
)
3785 q
= remote_query_supported_append (q
, remote_support_xml
);
3787 q
= remote_query_supported_append (q
, "qRelocInsn+");
3789 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
3792 do_cleanups (old_chain
);
3794 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3796 /* If an error occured, warn, but do not return - just reset the
3797 buffer to empty and go on to disable features. */
3798 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3801 warning (_("Remote failure reply: %s"), rs
->buf
);
3806 memset (seen
, 0, sizeof (seen
));
3811 enum packet_support is_supported
;
3812 char *p
, *end
, *name_end
, *value
;
3814 /* First separate out this item from the rest of the packet. If
3815 there's another item after this, we overwrite the separator
3816 (terminated strings are much easier to work with). */
3818 end
= strchr (p
, ';');
3821 end
= p
+ strlen (p
);
3831 warning (_("empty item in \"qSupported\" response"));
3836 name_end
= strchr (p
, '=');
3839 /* This is a name=value entry. */
3840 is_supported
= PACKET_ENABLE
;
3841 value
= name_end
+ 1;
3850 is_supported
= PACKET_ENABLE
;
3854 is_supported
= PACKET_DISABLE
;
3858 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3862 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
3868 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3869 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
3871 const struct protocol_feature
*feature
;
3874 feature
= &remote_protocol_features
[i
];
3875 feature
->func (feature
, is_supported
, value
);
3880 /* If we increased the packet size, make sure to increase the global
3881 buffer size also. We delay this until after parsing the entire
3882 qSupported packet, because this is the same buffer we were
3884 if (rs
->buf_size
< rs
->explicit_packet_size
)
3886 rs
->buf_size
= rs
->explicit_packet_size
;
3887 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
3890 /* Handle the defaults for unmentioned features. */
3891 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3894 const struct protocol_feature
*feature
;
3896 feature
= &remote_protocol_features
[i
];
3897 feature
->func (feature
, feature
->default_support
, NULL
);
3903 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
, int extended_p
)
3905 struct remote_state
*rs
= get_remote_state ();
3908 error (_("To open a remote debug connection, you need to specify what\n"
3909 "serial device is attached to the remote system\n"
3910 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
3912 /* See FIXME above. */
3913 if (!target_async_permitted
)
3914 wait_forever_enabled_p
= 1;
3916 /* If we're connected to a running target, target_preopen will kill it.
3917 But if we're connected to a target system with no running process,
3918 then we will still be connected when it returns. Ask this question
3919 first, before target_preopen has a chance to kill anything. */
3920 if (remote_desc
!= NULL
&& !have_inferiors ())
3923 || query (_("Already connected to a remote target. Disconnect? ")))
3926 error (_("Still connected."));
3929 target_preopen (from_tty
);
3931 unpush_target (target
);
3933 /* This time without a query. If we were connected to an
3934 extended-remote target and target_preopen killed the running
3935 process, we may still be connected. If we are starting "target
3936 remote" now, the extended-remote target will not have been
3937 removed by unpush_target. */
3938 if (remote_desc
!= NULL
&& !have_inferiors ())
3941 /* Make sure we send the passed signals list the next time we resume. */
3942 xfree (last_pass_packet
);
3943 last_pass_packet
= NULL
;
3945 remote_fileio_reset ();
3946 reopen_exec_file ();
3949 remote_desc
= remote_serial_open (name
);
3951 perror_with_name (name
);
3953 if (baud_rate
!= -1)
3955 if (serial_setbaudrate (remote_desc
, baud_rate
))
3957 /* The requested speed could not be set. Error out to
3958 top level after closing remote_desc. Take care to
3959 set remote_desc to NULL to avoid closing remote_desc
3961 serial_close (remote_desc
);
3963 perror_with_name (name
);
3967 serial_raw (remote_desc
);
3969 /* If there is something sitting in the buffer we might take it as a
3970 response to a command, which would be bad. */
3971 serial_flush_input (remote_desc
);
3975 puts_filtered ("Remote debugging using ");
3976 puts_filtered (name
);
3977 puts_filtered ("\n");
3979 push_target (target
); /* Switch to using remote target now. */
3981 /* Register extra event sources in the event loop. */
3982 remote_async_inferior_event_token
3983 = create_async_event_handler (remote_async_inferior_event_handler
,
3985 remote_async_get_pending_events_token
3986 = create_async_event_handler (remote_async_get_pending_events_handler
,
3989 /* Reset the target state; these things will be queried either by
3990 remote_query_supported or as they are needed. */
3991 init_all_packet_configs ();
3992 rs
->cached_wait_status
= 0;
3993 rs
->explicit_packet_size
= 0;
3995 rs
->multi_process_aware
= 0;
3996 rs
->extended
= extended_p
;
3997 rs
->non_stop_aware
= 0;
3998 rs
->waiting_for_stop_reply
= 0;
3999 rs
->ctrlc_pending_p
= 0;
4001 general_thread
= not_sent_ptid
;
4002 continue_thread
= not_sent_ptid
;
4004 /* Probe for ability to use "ThreadInfo" query, as required. */
4005 use_threadinfo_query
= 1;
4006 use_threadextra_query
= 1;
4008 if (target_async_permitted
)
4010 /* With this target we start out by owning the terminal. */
4011 remote_async_terminal_ours_p
= 1;
4013 /* FIXME: cagney/1999-09-23: During the initial connection it is
4014 assumed that the target is already ready and able to respond to
4015 requests. Unfortunately remote_start_remote() eventually calls
4016 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4017 around this. Eventually a mechanism that allows
4018 wait_for_inferior() to expect/get timeouts will be
4020 wait_forever_enabled_p
= 0;
4023 /* First delete any symbols previously loaded from shared libraries. */
4024 no_shared_libraries (NULL
, 0);
4027 init_thread_list ();
4029 /* Start the remote connection. If error() or QUIT, discard this
4030 target (we'd otherwise be in an inconsistent state) and then
4031 propogate the error on up the exception chain. This ensures that
4032 the caller doesn't stumble along blindly assuming that the
4033 function succeeded. The CLI doesn't have this problem but other
4034 UI's, such as MI do.
4036 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4037 this function should return an error indication letting the
4038 caller restore the previous state. Unfortunately the command
4039 ``target remote'' is directly wired to this function making that
4040 impossible. On a positive note, the CLI side of this problem has
4041 been fixed - the function set_cmd_context() makes it possible for
4042 all the ``target ....'' commands to share a common callback
4043 function. See cli-dump.c. */
4045 struct gdb_exception ex
;
4046 struct start_remote_args args
;
4048 args
.from_tty
= from_tty
;
4049 args
.target
= target
;
4050 args
.extended_p
= extended_p
;
4052 ex
= catch_exception (uiout
, remote_start_remote
, &args
, RETURN_MASK_ALL
);
4055 /* Pop the partially set up target - unless something else did
4056 already before throwing the exception. */
4057 if (remote_desc
!= NULL
)
4059 if (target_async_permitted
)
4060 wait_forever_enabled_p
= 1;
4061 throw_exception (ex
);
4065 if (target_async_permitted
)
4066 wait_forever_enabled_p
= 1;
4069 /* This takes a program previously attached to and detaches it. After
4070 this is done, GDB can be used to debug some other program. We
4071 better not have left any breakpoints in the target program or it'll
4072 die when it hits one. */
4075 remote_detach_1 (char *args
, int from_tty
, int extended
)
4077 int pid
= ptid_get_pid (inferior_ptid
);
4078 struct remote_state
*rs
= get_remote_state ();
4081 error (_("Argument given to \"detach\" when remotely debugging."));
4083 if (!target_has_execution
)
4084 error (_("No process to detach from."));
4086 /* Tell the remote target to detach. */
4087 if (remote_multi_process_p (rs
))
4088 sprintf (rs
->buf
, "D;%x", pid
);
4090 strcpy (rs
->buf
, "D");
4093 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4095 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4097 else if (rs
->buf
[0] == '\0')
4098 error (_("Remote doesn't know how to detach"));
4100 error (_("Can't detach process."));
4104 if (remote_multi_process_p (rs
))
4105 printf_filtered (_("Detached from remote %s.\n"),
4106 target_pid_to_str (pid_to_ptid (pid
)));
4110 puts_filtered (_("Detached from remote process.\n"));
4112 puts_filtered (_("Ending remote debugging.\n"));
4116 discard_pending_stop_replies (pid
);
4117 target_mourn_inferior ();
4121 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4123 remote_detach_1 (args
, from_tty
, 0);
4127 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4129 remote_detach_1 (args
, from_tty
, 1);
4132 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4135 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4138 error (_("Argument given to \"disconnect\" when remotely debugging."));
4140 /* Make sure we unpush even the extended remote targets; mourn
4141 won't do it. So call remote_mourn_1 directly instead of
4142 target_mourn_inferior. */
4143 remote_mourn_1 (target
);
4146 puts_filtered ("Ending remote debugging.\n");
4149 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4150 be chatty about it. */
4153 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4155 struct remote_state
*rs
= get_remote_state ();
4157 char *wait_status
= NULL
;
4159 pid
= parse_pid_to_attach (args
);
4161 /* Remote PID can be freely equal to getpid, do not check it here the same
4162 way as in other targets. */
4164 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4165 error (_("This target does not support attaching to a process"));
4167 sprintf (rs
->buf
, "vAttach;%x", pid
);
4169 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4171 if (packet_ok (rs
->buf
, &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 suppported by target\n");
6163 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6168 fprintf_unfiltered (gdb_stdlog
,
6169 "binary downloading suppported by target\n");
6170 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6177 /* Write memory data directly to the remote machine.
6178 This does not inform the data cache; the data cache uses this.
6179 HEADER is the starting part of the packet.
6180 MEMADDR is the address in the remote memory space.
6181 MYADDR is the address of the buffer in our space.
6182 LEN is the number of bytes.
6183 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6184 should send data as binary ('X'), or hex-encoded ('M').
6186 The function creates packet of the form
6187 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6189 where encoding of <DATA> is termined by PACKET_FORMAT.
6191 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6194 Returns the number of bytes transferred, or 0 (setting errno) for
6195 error. Only transfer a single packet. */
6198 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6199 const gdb_byte
*myaddr
, int len
,
6200 char packet_format
, int use_length
)
6202 struct remote_state
*rs
= get_remote_state ();
6212 if (packet_format
!= 'X' && packet_format
!= 'M')
6213 internal_error (__FILE__
, __LINE__
,
6214 "remote_write_bytes_aux: bad packet format");
6219 payload_size
= get_memory_write_packet_size ();
6221 /* The packet buffer will be large enough for the payload;
6222 get_memory_packet_size ensures this. */
6225 /* Compute the size of the actual payload by subtracting out the
6226 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
6228 payload_size
-= strlen ("$,:#NN");
6230 /* The comma won't be used. */
6232 header_length
= strlen (header
);
6233 payload_size
-= header_length
;
6234 payload_size
-= hexnumlen (memaddr
);
6236 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6238 strcat (rs
->buf
, header
);
6239 p
= rs
->buf
+ strlen (header
);
6241 /* Compute a best guess of the number of bytes actually transfered. */
6242 if (packet_format
== 'X')
6244 /* Best guess at number of bytes that will fit. */
6245 todo
= min (len
, payload_size
);
6247 payload_size
-= hexnumlen (todo
);
6248 todo
= min (todo
, payload_size
);
6252 /* Num bytes that will fit. */
6253 todo
= min (len
, payload_size
/ 2);
6255 payload_size
-= hexnumlen (todo
);
6256 todo
= min (todo
, payload_size
/ 2);
6260 internal_error (__FILE__
, __LINE__
,
6261 _("minumum packet size too small to write data"));
6263 /* If we already need another packet, then try to align the end
6264 of this packet to a useful boundary. */
6265 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6266 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6268 /* Append "<memaddr>". */
6269 memaddr
= remote_address_masked (memaddr
);
6270 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6277 /* Append <len>. Retain the location/size of <len>. It may need to
6278 be adjusted once the packet body has been created. */
6280 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6288 /* Append the packet body. */
6289 if (packet_format
== 'X')
6291 /* Binary mode. Send target system values byte by byte, in
6292 increasing byte addresses. Only escape certain critical
6294 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6297 /* If not all TODO bytes fit, then we'll need another packet. Make
6298 a second try to keep the end of the packet aligned. Don't do
6299 this if the packet is tiny. */
6300 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6304 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6306 if (new_nr_bytes
!= nr_bytes
)
6307 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6312 p
+= payload_length
;
6313 if (use_length
&& nr_bytes
< todo
)
6315 /* Escape chars have filled up the buffer prematurely,
6316 and we have actually sent fewer bytes than planned.
6317 Fix-up the length field of the packet. Use the same
6318 number of characters as before. */
6319 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6320 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6325 /* Normal mode: Send target system values byte by byte, in
6326 increasing byte addresses. Each byte is encoded as a two hex
6328 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6332 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6333 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6335 if (rs
->buf
[0] == 'E')
6337 /* There is no correspondance between what the remote protocol
6338 uses for errors and errno codes. We would like a cleaner way
6339 of representing errors (big enough to include errno codes,
6340 bfd_error codes, and others). But for now just return EIO. */
6345 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6346 fewer bytes than we'd planned. */
6350 /* Write memory data directly to the remote machine.
6351 This does not inform the data cache; the data cache uses this.
6352 MEMADDR is the address in the remote memory space.
6353 MYADDR is the address of the buffer in our space.
6354 LEN is the number of bytes.
6356 Returns number of bytes transferred, or 0 (setting errno) for
6357 error. Only transfer a single packet. */
6360 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6362 char *packet_format
= 0;
6364 /* Check whether the target supports binary download. */
6365 check_binary_download (memaddr
);
6367 switch (remote_protocol_packets
[PACKET_X
].support
)
6370 packet_format
= "X";
6372 case PACKET_DISABLE
:
6373 packet_format
= "M";
6375 case PACKET_SUPPORT_UNKNOWN
:
6376 internal_error (__FILE__
, __LINE__
,
6377 _("remote_write_bytes: bad internal state"));
6379 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6382 return remote_write_bytes_aux (packet_format
,
6383 memaddr
, myaddr
, len
, packet_format
[0], 1);
6386 /* Read memory data directly from the remote machine.
6387 This does not use the data cache; the data cache uses this.
6388 MEMADDR is the address in the remote memory space.
6389 MYADDR is the address of the buffer in our space.
6390 LEN is the number of bytes.
6392 Returns number of bytes transferred, or 0 for error. */
6394 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
6395 remote targets) shouldn't attempt to read the entire buffer.
6396 Instead it should read a single packet worth of data and then
6397 return the byte size of that packet to the caller. The caller (its
6398 caller and its callers caller ;-) already contains code for
6399 handling partial reads. */
6402 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6404 struct remote_state
*rs
= get_remote_state ();
6405 int max_buf_size
; /* Max size of packet output buffer. */
6411 max_buf_size
= get_memory_read_packet_size ();
6412 /* The packet buffer will be large enough for the payload;
6413 get_memory_packet_size ensures this. */
6422 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
6424 /* construct "m"<memaddr>","<len>" */
6425 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
6426 memaddr
= remote_address_masked (memaddr
);
6429 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6431 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6435 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6437 if (rs
->buf
[0] == 'E'
6438 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6439 && rs
->buf
[3] == '\0')
6441 /* There is no correspondance between what the remote
6442 protocol uses for errors and errno codes. We would like
6443 a cleaner way of representing errors (big enough to
6444 include errno codes, bfd_error codes, and others). But
6445 for now just return EIO. */
6450 /* Reply describes memory byte by byte,
6451 each byte encoded as two hex characters. */
6454 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
6456 /* Reply is short. This means that we were able to read
6457 only part of what we wanted to. */
6458 return i
+ (origlen
- len
);
6468 /* Remote notification handler. */
6471 handle_notification (char *buf
, size_t length
)
6473 if (strncmp (buf
, "Stop:", 5) == 0)
6475 if (pending_stop_reply
)
6477 /* We've already parsed the in-flight stop-reply, but the
6478 stub for some reason thought we didn't, possibly due to
6479 timeout on its side. Just ignore it. */
6481 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6485 struct cleanup
*old_chain
;
6486 struct stop_reply
*reply
= stop_reply_xmalloc ();
6488 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6490 remote_parse_stop_reply (buf
+ 5, reply
);
6492 discard_cleanups (old_chain
);
6494 /* Be careful to only set it after parsing, since an error
6495 may be thrown then. */
6496 pending_stop_reply
= reply
;
6498 /* Notify the event loop there's a stop reply to acknowledge
6499 and that there may be more events to fetch. */
6500 mark_async_event_handler (remote_async_get_pending_events_token
);
6503 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6507 /* We ignore notifications we don't recognize, for compatibility
6508 with newer stubs. */
6513 /* Read or write LEN bytes from inferior memory at MEMADDR,
6514 transferring to or from debugger address BUFFER. Write to inferior
6515 if SHOULD_WRITE is nonzero. Returns length of data written or
6516 read; 0 for error. TARGET is unused. */
6519 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6520 int should_write
, struct mem_attrib
*attrib
,
6521 struct target_ops
*target
)
6525 set_general_thread (inferior_ptid
);
6528 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6530 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6535 /* Sends a packet with content determined by the printf format string
6536 FORMAT and the remaining arguments, then gets the reply. Returns
6537 whether the packet was a success, a failure, or unknown. */
6539 static enum packet_result
6540 remote_send_printf (const char *format
, ...)
6542 struct remote_state
*rs
= get_remote_state ();
6543 int max_size
= get_remote_packet_size ();
6546 va_start (ap
, format
);
6549 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6550 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
6552 if (putpkt (rs
->buf
) < 0)
6553 error (_("Communication problem with target."));
6556 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6558 return packet_check_result (rs
->buf
);
6562 restore_remote_timeout (void *p
)
6564 int value
= *(int *)p
;
6566 remote_timeout
= value
;
6569 /* Flash writing can take quite some time. We'll set
6570 effectively infinite timeout for flash operations.
6571 In future, we'll need to decide on a better approach. */
6572 static const int remote_flash_timeout
= 1000;
6575 remote_flash_erase (struct target_ops
*ops
,
6576 ULONGEST address
, LONGEST length
)
6578 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6579 int saved_remote_timeout
= remote_timeout
;
6580 enum packet_result ret
;
6581 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6582 &saved_remote_timeout
);
6584 remote_timeout
= remote_flash_timeout
;
6586 ret
= remote_send_printf ("vFlashErase:%s,%s",
6587 phex (address
, addr_size
),
6591 case PACKET_UNKNOWN
:
6592 error (_("Remote target does not support flash erase"));
6594 error (_("Error erasing flash with vFlashErase packet"));
6599 do_cleanups (back_to
);
6603 remote_flash_write (struct target_ops
*ops
,
6604 ULONGEST address
, LONGEST length
,
6605 const gdb_byte
*data
)
6607 int saved_remote_timeout
= remote_timeout
;
6609 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6610 &saved_remote_timeout
);
6612 remote_timeout
= remote_flash_timeout
;
6613 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6614 do_cleanups (back_to
);
6620 remote_flash_done (struct target_ops
*ops
)
6622 int saved_remote_timeout
= remote_timeout
;
6624 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6625 &saved_remote_timeout
);
6627 remote_timeout
= remote_flash_timeout
;
6628 ret
= remote_send_printf ("vFlashDone");
6629 do_cleanups (back_to
);
6633 case PACKET_UNKNOWN
:
6634 error (_("Remote target does not support vFlashDone"));
6636 error (_("Error finishing flash operation"));
6643 remote_files_info (struct target_ops
*ignore
)
6645 puts_filtered ("Debugging a target over a serial line.\n");
6648 /* Stuff for dealing with the packets which are part of this protocol.
6649 See comment at top of file for details. */
6651 /* Read a single character from the remote end. */
6654 readchar (int timeout
)
6658 ch
= serial_readchar (remote_desc
, timeout
);
6663 switch ((enum serial_rc
) ch
)
6667 error (_("Remote connection closed"));
6670 perror_with_name (_("Remote communication error"));
6672 case SERIAL_TIMEOUT
:
6678 /* Send the command in *BUF to the remote machine, and read the reply
6679 into *BUF. Report an error if we get an error reply. Resize
6680 *BUF using xrealloc if necessary to hold the result, and update
6684 remote_send (char **buf
,
6688 getpkt (buf
, sizeof_buf
, 0);
6690 if ((*buf
)[0] == 'E')
6691 error (_("Remote failure reply: %s"), *buf
);
6694 /* Return a pointer to an xmalloc'ed string representing an escaped
6695 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6696 etc. The caller is responsible for releasing the returned
6700 escape_buffer (const char *buf
, int n
)
6702 struct cleanup
*old_chain
;
6703 struct ui_file
*stb
;
6706 stb
= mem_fileopen ();
6707 old_chain
= make_cleanup_ui_file_delete (stb
);
6709 fputstrn_unfiltered (buf
, n
, 0, stb
);
6710 str
= ui_file_xstrdup (stb
, NULL
);
6711 do_cleanups (old_chain
);
6715 /* Display a null-terminated packet on stdout, for debugging, using C
6719 print_packet (char *buf
)
6721 puts_filtered ("\"");
6722 fputstr_filtered (buf
, '"', gdb_stdout
);
6723 puts_filtered ("\"");
6729 return putpkt_binary (buf
, strlen (buf
));
6732 /* Send a packet to the remote machine, with error checking. The data
6733 of the packet is in BUF. The string in BUF can be at most
6734 get_remote_packet_size () - 5 to account for the $, # and checksum,
6735 and for a possible /0 if we are debugging (remote_debug) and want
6736 to print the sent packet as a string. */
6739 putpkt_binary (char *buf
, int cnt
)
6741 struct remote_state
*rs
= get_remote_state ();
6743 unsigned char csum
= 0;
6744 char *buf2
= alloca (cnt
+ 6);
6750 /* Catch cases like trying to read memory or listing threads while
6751 we're waiting for a stop reply. The remote server wouldn't be
6752 ready to handle this request, so we'd hang and timeout. We don't
6753 have to worry about this in synchronous mode, because in that
6754 case it's not possible to issue a command while the target is
6755 running. This is not a problem in non-stop mode, because in that
6756 case, the stub is always ready to process serial input. */
6757 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6758 error (_("Cannot execute this command while the target is running."));
6760 /* We're sending out a new packet. Make sure we don't look at a
6761 stale cached response. */
6762 rs
->cached_wait_status
= 0;
6764 /* Copy the packet into buffer BUF2, encapsulating it
6765 and giving it a checksum. */
6770 for (i
= 0; i
< cnt
; i
++)
6776 *p
++ = tohex ((csum
>> 4) & 0xf);
6777 *p
++ = tohex (csum
& 0xf);
6779 /* Send it over and over until we get a positive ack. */
6783 int started_error_output
= 0;
6787 struct cleanup
*old_chain
;
6791 str
= escape_buffer (buf2
, p
- buf2
);
6792 old_chain
= make_cleanup (xfree
, str
);
6793 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6794 gdb_flush (gdb_stdlog
);
6795 do_cleanups (old_chain
);
6797 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6798 perror_with_name (_("putpkt: write failed"));
6800 /* If this is a no acks version of the remote protocol, send the
6801 packet and move on. */
6805 /* Read until either a timeout occurs (-2) or '+' is read.
6806 Handle any notification that arrives in the mean time. */
6809 ch
= readchar (remote_timeout
);
6817 case SERIAL_TIMEOUT
:
6820 if (started_error_output
)
6822 putchar_unfiltered ('\n');
6823 started_error_output
= 0;
6832 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6836 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6837 case SERIAL_TIMEOUT
:
6841 break; /* Retransmit buffer. */
6845 fprintf_unfiltered (gdb_stdlog
,
6846 "Packet instead of Ack, ignoring it\n");
6847 /* It's probably an old response sent because an ACK
6848 was lost. Gobble up the packet and ack it so it
6849 doesn't get retransmitted when we resend this
6852 serial_write (remote_desc
, "+", 1);
6853 continue; /* Now, go look for +. */
6860 /* If we got a notification, handle it, and go back to looking
6862 /* We've found the start of a notification. Now
6863 collect the data. */
6864 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
6869 struct cleanup
*old_chain
;
6872 str
= escape_buffer (rs
->buf
, val
);
6873 old_chain
= make_cleanup (xfree
, str
);
6874 fprintf_unfiltered (gdb_stdlog
,
6875 " Notification received: %s\n",
6877 do_cleanups (old_chain
);
6879 handle_notification (rs
->buf
, val
);
6880 /* We're in sync now, rewait for the ack. */
6887 if (!started_error_output
)
6889 started_error_output
= 1;
6890 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6892 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6893 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
6902 if (!started_error_output
)
6904 started_error_output
= 1;
6905 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6907 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6911 break; /* Here to retransmit. */
6915 /* This is wrong. If doing a long backtrace, the user should be
6916 able to get out next time we call QUIT, without anything as
6917 violent as interrupt_query. If we want to provide a way out of
6918 here without getting to the next QUIT, it should be based on
6919 hitting ^C twice as in remote_wait. */
6930 /* Come here after finding the start of a frame when we expected an
6931 ack. Do our best to discard the rest of this packet. */
6940 c
= readchar (remote_timeout
);
6943 case SERIAL_TIMEOUT
:
6944 /* Nothing we can do. */
6947 /* Discard the two bytes of checksum and stop. */
6948 c
= readchar (remote_timeout
);
6950 c
= readchar (remote_timeout
);
6953 case '*': /* Run length encoding. */
6954 /* Discard the repeat count. */
6955 c
= readchar (remote_timeout
);
6960 /* A regular character. */
6966 /* Come here after finding the start of the frame. Collect the rest
6967 into *BUF, verifying the checksum, length, and handling run-length
6968 compression. NUL terminate the buffer. If there is not enough room,
6969 expand *BUF using xrealloc.
6971 Returns -1 on error, number of characters in buffer (ignoring the
6972 trailing NULL) on success. (could be extended to return one of the
6973 SERIAL status indications). */
6976 read_frame (char **buf_p
,
6983 struct remote_state
*rs
= get_remote_state ();
6990 c
= readchar (remote_timeout
);
6993 case SERIAL_TIMEOUT
:
6995 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
6999 fputs_filtered ("Saw new packet start in middle of old one\n",
7001 return -1; /* Start a new packet, count retries. */
7004 unsigned char pktcsum
;
7010 check_0
= readchar (remote_timeout
);
7012 check_1
= readchar (remote_timeout
);
7014 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7017 fputs_filtered ("Timeout in checksum, retrying\n",
7021 else if (check_0
< 0 || check_1
< 0)
7024 fputs_filtered ("Communication error in checksum\n",
7029 /* Don't recompute the checksum; with no ack packets we
7030 don't have any way to indicate a packet retransmission
7035 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7036 if (csum
== pktcsum
)
7041 struct cleanup
*old_chain
;
7044 str
= escape_buffer (buf
, bc
);
7045 old_chain
= make_cleanup (xfree
, str
);
7046 fprintf_unfiltered (gdb_stdlog
,
7048 Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
7049 pktcsum
, csum
, str
);
7050 do_cleanups (old_chain
);
7052 /* Number of characters in buffer ignoring trailing
7056 case '*': /* Run length encoding. */
7061 c
= readchar (remote_timeout
);
7063 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7065 /* The character before ``*'' is repeated. */
7067 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7069 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7071 /* Make some more room in the buffer. */
7072 *sizeof_buf
+= repeat
;
7073 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7077 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7083 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7087 if (bc
>= *sizeof_buf
- 1)
7089 /* Make some more room in the buffer. */
7091 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7102 /* Read a packet from the remote machine, with error checking, and
7103 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7104 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7105 rather than timing out; this is used (in synchronous mode) to wait
7106 for a target that is is executing user code to stop. */
7107 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7108 don't have to change all the calls to getpkt to deal with the
7109 return value, because at the moment I don't know what the right
7110 thing to do it for those. */
7118 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7122 /* Read a packet from the remote machine, with error checking, and
7123 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7124 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7125 rather than timing out; this is used (in synchronous mode) to wait
7126 for a target that is is executing user code to stop. If FOREVER ==
7127 0, this function is allowed to time out gracefully and return an
7128 indication of this to the caller. Otherwise return the number of
7129 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7130 enough reason to return to the caller. */
7133 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7134 int expecting_notif
)
7136 struct remote_state
*rs
= get_remote_state ();
7142 /* We're reading a new response. Make sure we don't look at a
7143 previously cached response. */
7144 rs
->cached_wait_status
= 0;
7146 strcpy (*buf
, "timeout");
7149 timeout
= watchdog
> 0 ? watchdog
: -1;
7150 else if (expecting_notif
)
7151 timeout
= 0; /* There should already be a char in the buffer. If
7154 timeout
= remote_timeout
;
7158 /* Process any number of notifications, and then return when
7162 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7164 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7166 /* This can loop forever if the remote side sends us
7167 characters continuously, but if it pauses, we'll get
7168 SERIAL_TIMEOUT from readchar because of timeout. Then
7169 we'll count that as a retry.
7171 Note that even when forever is set, we will only wait
7172 forever prior to the start of a packet. After that, we
7173 expect characters to arrive at a brisk pace. They should
7174 show up within remote_timeout intervals. */
7176 c
= readchar (timeout
);
7177 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7179 if (c
== SERIAL_TIMEOUT
)
7181 if (expecting_notif
)
7182 return -1; /* Don't complain, it's normal to not get
7183 anything in this case. */
7185 if (forever
) /* Watchdog went off? Kill the target. */
7189 error (_("Watchdog timeout has expired. Target detached."));
7192 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7196 /* We've found the start of a packet or notification.
7197 Now collect the data. */
7198 val
= read_frame (buf
, sizeof_buf
);
7203 serial_write (remote_desc
, "-", 1);
7206 if (tries
> MAX_TRIES
)
7208 /* We have tried hard enough, and just can't receive the
7209 packet/notification. Give up. */
7210 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7212 /* Skip the ack char if we're in no-ack mode. */
7213 if (!rs
->noack_mode
)
7214 serial_write (remote_desc
, "+", 1);
7218 /* If we got an ordinary packet, return that to our caller. */
7223 struct cleanup
*old_chain
;
7226 str
= escape_buffer (*buf
, val
);
7227 old_chain
= make_cleanup (xfree
, str
);
7228 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7229 do_cleanups (old_chain
);
7232 /* Skip the ack char if we're in no-ack mode. */
7233 if (!rs
->noack_mode
)
7234 serial_write (remote_desc
, "+", 1);
7238 /* If we got a notification, handle it, and go back to looking
7242 gdb_assert (c
== '%');
7246 struct cleanup
*old_chain
;
7249 str
= escape_buffer (*buf
, val
);
7250 old_chain
= make_cleanup (xfree
, str
);
7251 fprintf_unfiltered (gdb_stdlog
,
7252 " Notification received: %s\n",
7254 do_cleanups (old_chain
);
7257 handle_notification (*buf
, val
);
7259 /* Notifications require no acknowledgement. */
7261 if (expecting_notif
)
7268 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7270 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
7274 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
7276 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
7281 remote_kill (struct target_ops
*ops
)
7283 /* Use catch_errors so the user can quit from gdb even when we
7284 aren't on speaking terms with the remote system. */
7285 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
7287 /* Don't wait for it to die. I'm not really sure it matters whether
7288 we do or not. For the existing stubs, kill is a noop. */
7289 target_mourn_inferior ();
7293 remote_vkill (int pid
, struct remote_state
*rs
)
7295 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7298 /* Tell the remote target to detach. */
7299 sprintf (rs
->buf
, "vKill;%x", pid
);
7301 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7303 if (packet_ok (rs
->buf
,
7304 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7306 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7313 extended_remote_kill (struct target_ops
*ops
)
7316 int pid
= ptid_get_pid (inferior_ptid
);
7317 struct remote_state
*rs
= get_remote_state ();
7319 res
= remote_vkill (pid
, rs
);
7320 if (res
== -1 && !remote_multi_process_p (rs
))
7322 /* Don't try 'k' on a multi-process aware stub -- it has no way
7323 to specify the pid. */
7327 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7328 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7331 /* Don't wait for it to die. I'm not really sure it matters whether
7332 we do or not. For the existing stubs, kill is a noop. */
7338 error (_("Can't kill process"));
7340 target_mourn_inferior ();
7344 remote_mourn (struct target_ops
*ops
)
7346 remote_mourn_1 (ops
);
7349 /* Worker function for remote_mourn. */
7351 remote_mourn_1 (struct target_ops
*target
)
7353 unpush_target (target
);
7355 /* remote_close takes care of doing most of the clean up. */
7356 generic_mourn_inferior ();
7360 extended_remote_mourn_1 (struct target_ops
*target
)
7362 struct remote_state
*rs
= get_remote_state ();
7364 /* In case we got here due to an error, but we're going to stay
7366 rs
->waiting_for_stop_reply
= 0;
7368 /* We're no longer interested in these events. */
7369 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7371 /* If the current general thread belonged to the process we just
7372 detached from or has exited, the remote side current general
7373 thread becomes undefined. Considering a case like this:
7375 - We just got here due to a detach.
7376 - The process that we're detaching from happens to immediately
7377 report a global breakpoint being hit in non-stop mode, in the
7378 same thread we had selected before.
7379 - GDB attaches to this process again.
7380 - This event happens to be the next event we handle.
7382 GDB would consider that the current general thread didn't need to
7383 be set on the stub side (with Hg), since for all it knew,
7384 GENERAL_THREAD hadn't changed.
7386 Notice that although in all-stop mode, the remote server always
7387 sets the current thread to the thread reporting the stop event,
7388 that doesn't happen in non-stop mode; in non-stop, the stub *must
7389 not* change the current thread when reporting a breakpoint hit,
7390 due to the decoupling of event reporting and event handling.
7392 To keep things simple, we always invalidate our notion of the
7394 record_currthread (minus_one_ptid
);
7396 /* Unlike "target remote", we do not want to unpush the target; then
7397 the next time the user says "run", we won't be connected. */
7399 /* Call common code to mark the inferior as not running. */
7400 generic_mourn_inferior ();
7402 if (!have_inferiors ())
7404 if (!remote_multi_process_p (rs
))
7406 /* Check whether the target is running now - some remote stubs
7407 automatically restart after kill. */
7409 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7411 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7413 /* Assume that the target has been restarted. Set inferior_ptid
7414 so that bits of core GDB realizes there's something here, e.g.,
7415 so that the user can say "kill" again. */
7416 inferior_ptid
= magic_null_ptid
;
7423 extended_remote_mourn (struct target_ops
*ops
)
7425 extended_remote_mourn_1 (ops
);
7429 extended_remote_run (char *args
)
7431 struct remote_state
*rs
= get_remote_state ();
7434 /* If the user has disabled vRun support, or we have detected that
7435 support is not available, do not try it. */
7436 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7439 strcpy (rs
->buf
, "vRun;");
7440 len
= strlen (rs
->buf
);
7442 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7443 error (_("Remote file name too long for run packet"));
7444 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7446 gdb_assert (args
!= NULL
);
7449 struct cleanup
*back_to
;
7453 argv
= gdb_buildargv (args
);
7454 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7455 for (i
= 0; argv
[i
] != NULL
; i
++)
7457 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7458 error (_("Argument list too long for run packet"));
7459 rs
->buf
[len
++] = ';';
7460 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7462 do_cleanups (back_to
);
7465 rs
->buf
[len
++] = '\0';
7468 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7470 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7472 /* We have a wait response; we don't need it, though. All is well. */
7475 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7476 /* It wasn't disabled before, but it is now. */
7480 if (remote_exec_file
[0] == '\0')
7481 error (_("Running the default executable on the remote target failed; "
7482 "try \"set remote exec-file\"?"));
7484 error (_("Running \"%s\" on the remote target failed"),
7489 /* In the extended protocol we want to be able to do things like
7490 "run" and have them basically work as expected. So we need
7491 a special create_inferior function. We support changing the
7492 executable file and the command line arguments, but not the
7496 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7497 char **env
, int from_tty
)
7499 /* If running asynchronously, register the target file descriptor
7500 with the event loop. */
7501 if (target_can_async_p ())
7502 target_async (inferior_event_handler
, 0);
7504 /* Now restart the remote server. */
7505 if (extended_remote_run (args
) == -1)
7507 /* vRun was not supported. Fail if we need it to do what the
7509 if (remote_exec_file
[0])
7510 error (_("Remote target does not support \"set remote exec-file\""));
7512 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7514 /* Fall back to "R". */
7515 extended_remote_restart ();
7518 if (!have_inferiors ())
7520 /* Clean up from the last time we ran, before we mark the target
7521 running again. This will mark breakpoints uninserted, and
7522 get_offsets may insert breakpoints. */
7523 init_thread_list ();
7524 init_wait_for_inferior ();
7527 /* Now mark the inferior as running before we do anything else. */
7528 inferior_ptid
= magic_null_ptid
;
7530 /* Now, if we have thread information, update inferior_ptid. */
7531 inferior_ptid
= remote_current_thread (inferior_ptid
);
7533 remote_add_inferior (ptid_get_pid (inferior_ptid
), 0);
7534 add_thread_silent (inferior_ptid
);
7536 /* Get updated offsets, if the stub uses qOffsets. */
7541 extended_remote_create_inferior (struct target_ops
*ops
,
7542 char *exec_file
, char *args
,
7543 char **env
, int from_tty
)
7545 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7549 /* Insert a breakpoint. On targets that have software breakpoint
7550 support, we ask the remote target to do the work; on targets
7551 which don't, we insert a traditional memory breakpoint. */
7554 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7555 struct bp_target_info
*bp_tgt
)
7557 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7558 If it succeeds, then set the support to PACKET_ENABLE. If it
7559 fails, and the user has explicitly requested the Z support then
7560 report an error, otherwise, mark it disabled and go on. */
7562 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7564 CORE_ADDR addr
= bp_tgt
->placed_address
;
7565 struct remote_state
*rs
;
7569 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7571 rs
= get_remote_state ();
7577 addr
= (ULONGEST
) remote_address_masked (addr
);
7578 p
+= hexnumstr (p
, addr
);
7579 sprintf (p
, ",%d", bpsize
);
7582 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7584 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7589 bp_tgt
->placed_address
= addr
;
7590 bp_tgt
->placed_size
= bpsize
;
7592 case PACKET_UNKNOWN
:
7597 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7601 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7602 struct bp_target_info
*bp_tgt
)
7604 CORE_ADDR addr
= bp_tgt
->placed_address
;
7605 struct remote_state
*rs
= get_remote_state ();
7607 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7615 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7616 p
+= hexnumstr (p
, addr
);
7617 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7620 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7622 return (rs
->buf
[0] == 'E');
7625 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7629 watchpoint_to_Z_packet (int type
)
7634 return Z_PACKET_WRITE_WP
;
7637 return Z_PACKET_READ_WP
;
7640 return Z_PACKET_ACCESS_WP
;
7643 internal_error (__FILE__
, __LINE__
,
7644 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7649 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
7650 struct expression
*cond
)
7652 struct remote_state
*rs
= get_remote_state ();
7654 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7656 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7659 sprintf (rs
->buf
, "Z%x,", packet
);
7660 p
= strchr (rs
->buf
, '\0');
7661 addr
= remote_address_masked (addr
);
7662 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7663 sprintf (p
, ",%x", len
);
7666 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7668 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7672 case PACKET_UNKNOWN
:
7677 internal_error (__FILE__
, __LINE__
,
7678 _("remote_insert_watchpoint: reached end of function"));
7683 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
7684 struct expression
*cond
)
7686 struct remote_state
*rs
= get_remote_state ();
7688 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7690 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7693 sprintf (rs
->buf
, "z%x,", packet
);
7694 p
= strchr (rs
->buf
, '\0');
7695 addr
= remote_address_masked (addr
);
7696 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7697 sprintf (p
, ",%x", len
);
7699 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7701 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7704 case PACKET_UNKNOWN
:
7709 internal_error (__FILE__
, __LINE__
,
7710 _("remote_remove_watchpoint: reached end of function"));
7714 int remote_hw_watchpoint_limit
= -1;
7715 int remote_hw_breakpoint_limit
= -1;
7718 remote_check_watch_resources (int type
, int cnt
, int ot
)
7720 if (type
== bp_hardware_breakpoint
)
7722 if (remote_hw_breakpoint_limit
== 0)
7724 else if (remote_hw_breakpoint_limit
< 0)
7726 else if (cnt
<= remote_hw_breakpoint_limit
)
7731 if (remote_hw_watchpoint_limit
== 0)
7733 else if (remote_hw_watchpoint_limit
< 0)
7737 else if (cnt
<= remote_hw_watchpoint_limit
)
7744 remote_stopped_by_watchpoint (void)
7746 return remote_stopped_by_watchpoint_p
;
7750 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
7754 if (remote_stopped_by_watchpoint ())
7756 *addr_p
= remote_watch_data_address
;
7765 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
7766 struct bp_target_info
*bp_tgt
)
7769 struct remote_state
*rs
;
7772 /* The length field should be set to the size of a breakpoint
7773 instruction, even though we aren't inserting one ourselves. */
7775 gdbarch_remote_breakpoint_from_pc
7776 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
7778 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7781 rs
= get_remote_state ();
7788 addr
= remote_address_masked (bp_tgt
->placed_address
);
7789 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7790 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7793 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7795 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7798 case PACKET_UNKNOWN
:
7803 internal_error (__FILE__
, __LINE__
,
7804 _("remote_insert_hw_breakpoint: reached end of function"));
7809 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
7810 struct bp_target_info
*bp_tgt
)
7813 struct remote_state
*rs
= get_remote_state ();
7816 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7823 addr
= remote_address_masked (bp_tgt
->placed_address
);
7824 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7825 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7828 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7830 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7833 case PACKET_UNKNOWN
:
7838 internal_error (__FILE__
, __LINE__
,
7839 _("remote_remove_hw_breakpoint: reached end of function"));
7842 /* Table used by the crc32 function to calcuate the checksum. */
7844 static unsigned long crc32_table
[256] =
7847 static unsigned long
7848 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
7850 if (!crc32_table
[1])
7852 /* Initialize the CRC table and the decoding table. */
7856 for (i
= 0; i
< 256; i
++)
7858 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
7859 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
7866 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
7872 /* Verify memory using the "qCRC:" request. */
7875 remote_verify_memory (struct target_ops
*ops
,
7876 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
7878 struct remote_state
*rs
= get_remote_state ();
7879 unsigned long host_crc
, target_crc
;
7882 /* FIXME: assumes lma can fit into long. */
7883 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
7884 (long) lma
, (long) size
);
7887 /* Be clever; compute the host_crc before waiting for target
7889 host_crc
= crc32 (data
, size
, 0xffffffff);
7891 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7892 if (rs
->buf
[0] == 'E')
7895 if (rs
->buf
[0] != 'C')
7896 error (_("remote target does not support this operation"));
7898 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
7899 target_crc
= target_crc
* 16 + fromhex (*tmp
);
7901 return (host_crc
== target_crc
);
7904 /* compare-sections command
7906 With no arguments, compares each loadable section in the exec bfd
7907 with the same memory range on the target, and reports mismatches.
7908 Useful for verifying the image on the target against the exec file. */
7911 compare_sections_command (char *args
, int from_tty
)
7914 struct cleanup
*old_chain
;
7916 const char *sectname
;
7924 error (_("command cannot be used without an exec file"));
7926 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
7928 if (!(s
->flags
& SEC_LOAD
))
7929 continue; /* skip non-loadable section */
7931 size
= bfd_get_section_size (s
);
7933 continue; /* skip zero-length section */
7935 sectname
= bfd_get_section_name (exec_bfd
, s
);
7936 if (args
&& strcmp (args
, sectname
) != 0)
7937 continue; /* not the section selected by user */
7939 matched
= 1; /* do this section */
7942 sectdata
= xmalloc (size
);
7943 old_chain
= make_cleanup (xfree
, sectdata
);
7944 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
7946 res
= target_verify_memory (sectdata
, lma
, size
);
7949 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
7950 paddress (target_gdbarch
, lma
),
7951 paddress (target_gdbarch
, lma
+ size
));
7953 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
7954 paddress (target_gdbarch
, lma
),
7955 paddress (target_gdbarch
, lma
+ size
));
7957 printf_filtered ("matched.\n");
7960 printf_filtered ("MIS-MATCHED!\n");
7964 do_cleanups (old_chain
);
7967 warning (_("One or more sections of the remote executable does not match\n\
7968 the loaded file\n"));
7969 if (args
&& !matched
)
7970 printf_filtered (_("No loaded section named '%s'.\n"), args
);
7973 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
7974 into remote target. The number of bytes written to the remote
7975 target is returned, or -1 for error. */
7978 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
7979 const char *annex
, const gdb_byte
*writebuf
,
7980 ULONGEST offset
, LONGEST len
,
7981 struct packet_config
*packet
)
7985 struct remote_state
*rs
= get_remote_state ();
7986 int max_size
= get_memory_write_packet_size ();
7988 if (packet
->support
== PACKET_DISABLE
)
7991 /* Insert header. */
7992 i
= snprintf (rs
->buf
, max_size
,
7993 "qXfer:%s:write:%s:%s:",
7994 object_name
, annex
? annex
: "",
7995 phex_nz (offset
, sizeof offset
));
7996 max_size
-= (i
+ 1);
7998 /* Escape as much data as fits into rs->buf. */
7999 buf_len
= remote_escape_output
8000 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8002 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8003 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8004 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8007 unpack_varlen_hex (rs
->buf
, &n
);
8011 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8012 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8013 number of bytes read is returned, or 0 for EOF, or -1 for error.
8014 The number of bytes read may be less than LEN without indicating an
8015 EOF. PACKET is checked and updated to indicate whether the remote
8016 target supports this object. */
8019 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8021 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8022 struct packet_config
*packet
)
8024 static char *finished_object
;
8025 static char *finished_annex
;
8026 static ULONGEST finished_offset
;
8028 struct remote_state
*rs
= get_remote_state ();
8029 LONGEST i
, n
, packet_len
;
8031 if (packet
->support
== PACKET_DISABLE
)
8034 /* Check whether we've cached an end-of-object packet that matches
8036 if (finished_object
)
8038 if (strcmp (object_name
, finished_object
) == 0
8039 && strcmp (annex
? annex
: "", finished_annex
) == 0
8040 && offset
== finished_offset
)
8043 /* Otherwise, we're now reading something different. Discard
8045 xfree (finished_object
);
8046 xfree (finished_annex
);
8047 finished_object
= NULL
;
8048 finished_annex
= NULL
;
8051 /* Request only enough to fit in a single packet. The actual data
8052 may not, since we don't know how much of it will need to be escaped;
8053 the target is free to respond with slightly less data. We subtract
8054 five to account for the response type and the protocol frame. */
8055 n
= min (get_remote_packet_size () - 5, len
);
8056 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8057 object_name
, annex
? annex
: "",
8058 phex_nz (offset
, sizeof offset
),
8059 phex_nz (n
, sizeof n
));
8060 i
= putpkt (rs
->buf
);
8065 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8066 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8069 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8070 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8072 /* 'm' means there is (or at least might be) more data after this
8073 batch. That does not make sense unless there's at least one byte
8074 of data in this reply. */
8075 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8076 error (_("Remote qXfer reply contained no data."));
8078 /* Got some data. */
8079 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8081 /* 'l' is an EOF marker, possibly including a final block of data,
8082 or possibly empty. If we have the final block of a non-empty
8083 object, record this fact to bypass a subsequent partial read. */
8084 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8086 finished_object
= xstrdup (object_name
);
8087 finished_annex
= xstrdup (annex
? annex
: "");
8088 finished_offset
= offset
+ i
;
8095 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8096 const char *annex
, gdb_byte
*readbuf
,
8097 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8099 struct remote_state
*rs
;
8104 set_general_thread (inferior_ptid
);
8106 rs
= get_remote_state ();
8108 /* Handle memory using the standard memory routines. */
8109 if (object
== TARGET_OBJECT_MEMORY
)
8115 /* If the remote target is connected but not running, we should
8116 pass this request down to a lower stratum (e.g. the executable
8118 if (!target_has_execution
)
8121 if (writebuf
!= NULL
)
8122 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8124 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8128 else if (xfered
== 0 && errno
== 0)
8134 /* Handle SPU memory using qxfer packets. */
8135 if (object
== TARGET_OBJECT_SPU
)
8138 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8139 &remote_protocol_packets
8140 [PACKET_qXfer_spu_read
]);
8142 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8143 &remote_protocol_packets
8144 [PACKET_qXfer_spu_write
]);
8147 /* Handle extra signal info using qxfer packets. */
8148 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8151 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8152 &remote_protocol_packets
8153 [PACKET_qXfer_siginfo_read
]);
8155 return remote_write_qxfer (ops
, "siginfo", annex
, writebuf
, offset
, len
,
8156 &remote_protocol_packets
8157 [PACKET_qXfer_siginfo_write
]);
8160 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8163 return remote_read_qxfer (ops
, "statictrace", annex
, readbuf
, offset
, len
,
8164 &remote_protocol_packets
8165 [PACKET_qXfer_statictrace_read
]);
8170 /* Only handle flash writes. */
8171 if (writebuf
!= NULL
)
8177 case TARGET_OBJECT_FLASH
:
8178 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8182 else if (xfered
== 0 && errno
== 0)
8192 /* Map pre-existing objects onto letters. DO NOT do this for new
8193 objects!!! Instead specify new query packets. */
8196 case TARGET_OBJECT_AVR
:
8200 case TARGET_OBJECT_AUXV
:
8201 gdb_assert (annex
== NULL
);
8202 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8203 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8205 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8206 return remote_read_qxfer
8207 (ops
, "features", annex
, readbuf
, offset
, len
,
8208 &remote_protocol_packets
[PACKET_qXfer_features
]);
8210 case TARGET_OBJECT_LIBRARIES
:
8211 return remote_read_qxfer
8212 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8213 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8215 case TARGET_OBJECT_MEMORY_MAP
:
8216 gdb_assert (annex
== NULL
);
8217 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8218 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8220 case TARGET_OBJECT_OSDATA
:
8221 /* Should only get here if we're connected. */
8222 gdb_assert (remote_desc
);
8223 return remote_read_qxfer
8224 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8225 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8227 case TARGET_OBJECT_THREADS
:
8228 gdb_assert (annex
== NULL
);
8229 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8230 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8236 /* Note: a zero OFFSET and LEN can be used to query the minimum
8238 if (offset
== 0 && len
== 0)
8239 return (get_remote_packet_size ());
8240 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8241 large enough let the caller deal with it. */
8242 if (len
< get_remote_packet_size ())
8244 len
= get_remote_packet_size ();
8246 /* Except for querying the minimum buffer size, target must be open. */
8248 error (_("remote query is only available after target open"));
8250 gdb_assert (annex
!= NULL
);
8251 gdb_assert (readbuf
!= NULL
);
8257 /* We used one buffer char for the remote protocol q command and
8258 another for the query type. As the remote protocol encapsulation
8259 uses 4 chars plus one extra in case we are debugging
8260 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8263 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8265 /* Bad caller may have sent forbidden characters. */
8266 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8271 gdb_assert (annex
[i
] == '\0');
8273 i
= putpkt (rs
->buf
);
8277 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8278 strcpy ((char *) readbuf
, rs
->buf
);
8280 return strlen ((char *) readbuf
);
8284 remote_search_memory (struct target_ops
* ops
,
8285 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8286 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8287 CORE_ADDR
*found_addrp
)
8289 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
8290 struct remote_state
*rs
= get_remote_state ();
8291 int max_size
= get_memory_write_packet_size ();
8292 struct packet_config
*packet
=
8293 &remote_protocol_packets
[PACKET_qSearch_memory
];
8294 /* number of packet bytes used to encode the pattern,
8295 this could be more than PATTERN_LEN due to escape characters */
8296 int escaped_pattern_len
;
8297 /* amount of pattern that was encodable in the packet */
8298 int used_pattern_len
;
8301 ULONGEST found_addr
;
8303 /* Don't go to the target if we don't have to.
8304 This is done before checking packet->support to avoid the possibility that
8305 a success for this edge case means the facility works in general. */
8306 if (pattern_len
> search_space_len
)
8308 if (pattern_len
== 0)
8310 *found_addrp
= start_addr
;
8314 /* If we already know the packet isn't supported, fall back to the simple
8315 way of searching memory. */
8317 if (packet
->support
== PACKET_DISABLE
)
8319 /* Target doesn't provided special support, fall back and use the
8320 standard support (copy memory and do the search here). */
8321 return simple_search_memory (ops
, start_addr
, search_space_len
,
8322 pattern
, pattern_len
, found_addrp
);
8325 /* Insert header. */
8326 i
= snprintf (rs
->buf
, max_size
,
8327 "qSearch:memory:%s;%s;",
8328 phex_nz (start_addr
, addr_size
),
8329 phex_nz (search_space_len
, sizeof (search_space_len
)));
8330 max_size
-= (i
+ 1);
8332 /* Escape as much data as fits into rs->buf. */
8333 escaped_pattern_len
=
8334 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8335 &used_pattern_len
, max_size
);
8337 /* Bail if the pattern is too large. */
8338 if (used_pattern_len
!= pattern_len
)
8339 error ("Pattern is too large to transmit to remote target.");
8341 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8342 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8343 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8345 /* The request may not have worked because the command is not
8346 supported. If so, fall back to the simple way. */
8347 if (packet
->support
== PACKET_DISABLE
)
8349 return simple_search_memory (ops
, start_addr
, search_space_len
,
8350 pattern
, pattern_len
, found_addrp
);
8355 if (rs
->buf
[0] == '0')
8357 else if (rs
->buf
[0] == '1')
8360 if (rs
->buf
[1] != ',')
8361 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8362 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8363 *found_addrp
= found_addr
;
8366 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8372 remote_rcmd (char *command
,
8373 struct ui_file
*outbuf
)
8375 struct remote_state
*rs
= get_remote_state ();
8379 error (_("remote rcmd is only available after target open"));
8381 /* Send a NULL command across as an empty command. */
8382 if (command
== NULL
)
8385 /* The query prefix. */
8386 strcpy (rs
->buf
, "qRcmd,");
8387 p
= strchr (rs
->buf
, '\0');
8389 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
8390 error (_("\"monitor\" command ``%s'' is too long."), command
);
8392 /* Encode the actual command. */
8393 bin2hex ((gdb_byte
*) command
, p
, 0);
8395 if (putpkt (rs
->buf
) < 0)
8396 error (_("Communication problem with target."));
8398 /* get/display the response */
8403 /* XXX - see also remote_get_noisy_reply(). */
8405 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8408 error (_("Target does not support this command."));
8409 if (buf
[0] == 'O' && buf
[1] != 'K')
8411 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8414 if (strcmp (buf
, "OK") == 0)
8416 if (strlen (buf
) == 3 && buf
[0] == 'E'
8417 && isdigit (buf
[1]) && isdigit (buf
[2]))
8419 error (_("Protocol error with Rcmd"));
8421 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8423 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8425 fputc_unfiltered (c
, outbuf
);
8431 static VEC(mem_region_s
) *
8432 remote_memory_map (struct target_ops
*ops
)
8434 VEC(mem_region_s
) *result
= NULL
;
8435 char *text
= target_read_stralloc (¤t_target
,
8436 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8440 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8442 result
= parse_memory_map (text
);
8443 do_cleanups (back_to
);
8450 packet_command (char *args
, int from_tty
)
8452 struct remote_state
*rs
= get_remote_state ();
8455 error (_("command can only be used with remote target"));
8458 error (_("remote-packet command requires packet text as argument"));
8460 puts_filtered ("sending: ");
8461 print_packet (args
);
8462 puts_filtered ("\n");
8465 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8466 puts_filtered ("received: ");
8467 print_packet (rs
->buf
);
8468 puts_filtered ("\n");
8472 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8474 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8476 static void threadset_test_cmd (char *cmd
, int tty
);
8478 static void threadalive_test (char *cmd
, int tty
);
8480 static void threadlist_test_cmd (char *cmd
, int tty
);
8482 int get_and_display_threadinfo (threadref
*ref
);
8484 static void threadinfo_test_cmd (char *cmd
, int tty
);
8486 static int thread_display_step (threadref
*ref
, void *context
);
8488 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8490 static void init_remote_threadtests (void);
8492 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8495 threadset_test_cmd (char *cmd
, int tty
)
8497 int sample_thread
= SAMPLE_THREAD
;
8499 printf_filtered (_("Remote threadset test\n"));
8500 set_general_thread (sample_thread
);
8505 threadalive_test (char *cmd
, int tty
)
8507 int sample_thread
= SAMPLE_THREAD
;
8508 int pid
= ptid_get_pid (inferior_ptid
);
8509 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8511 if (remote_thread_alive (ptid
))
8512 printf_filtered ("PASS: Thread alive test\n");
8514 printf_filtered ("FAIL: Thread alive test\n");
8517 void output_threadid (char *title
, threadref
*ref
);
8520 output_threadid (char *title
, threadref
*ref
)
8524 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8526 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8530 threadlist_test_cmd (char *cmd
, int tty
)
8533 threadref nextthread
;
8534 int done
, result_count
;
8535 threadref threadlist
[3];
8537 printf_filtered ("Remote Threadlist test\n");
8538 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8539 &result_count
, &threadlist
[0]))
8540 printf_filtered ("FAIL: threadlist test\n");
8543 threadref
*scan
= threadlist
;
8544 threadref
*limit
= scan
+ result_count
;
8546 while (scan
< limit
)
8547 output_threadid (" thread ", scan
++);
8552 display_thread_info (struct gdb_ext_thread_info
*info
)
8554 output_threadid ("Threadid: ", &info
->threadid
);
8555 printf_filtered ("Name: %s\n ", info
->shortname
);
8556 printf_filtered ("State: %s\n", info
->display
);
8557 printf_filtered ("other: %s\n\n", info
->more_display
);
8561 get_and_display_threadinfo (threadref
*ref
)
8565 struct gdb_ext_thread_info threadinfo
;
8567 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8568 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8569 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8570 display_thread_info (&threadinfo
);
8575 threadinfo_test_cmd (char *cmd
, int tty
)
8577 int athread
= SAMPLE_THREAD
;
8581 int_to_threadref (&thread
, athread
);
8582 printf_filtered ("Remote Threadinfo test\n");
8583 if (!get_and_display_threadinfo (&thread
))
8584 printf_filtered ("FAIL cannot get thread info\n");
8588 thread_display_step (threadref
*ref
, void *context
)
8590 /* output_threadid(" threadstep ",ref); *//* simple test */
8591 return get_and_display_threadinfo (ref
);
8595 threadlist_update_test_cmd (char *cmd
, int tty
)
8597 printf_filtered ("Remote Threadlist update test\n");
8598 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8602 init_remote_threadtests (void)
8604 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
8605 Fetch and print the remote list of thread identifiers, one pkt only"));
8606 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8607 _("Fetch and display info about one thread"));
8608 add_com ("tset", class_obscure
, threadset_test_cmd
,
8609 _("Test setting to a different thread"));
8610 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8611 _("Iterate through updating all remote thread info"));
8612 add_com ("talive", class_obscure
, threadalive_test
,
8613 _(" Remote thread alive test "));
8618 /* Convert a thread ID to a string. Returns the string in a static
8622 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8624 static char buf
[64];
8625 struct remote_state
*rs
= get_remote_state ();
8627 if (ptid_is_pid (ptid
))
8629 /* Printing an inferior target id. */
8631 /* When multi-process extensions are off, there's no way in the
8632 remote protocol to know the remote process id, if there's any
8633 at all. There's one exception --- when we're connected with
8634 target extended-remote, and we manually attached to a process
8635 with "attach PID". We don't record anywhere a flag that
8636 allows us to distinguish that case from the case of
8637 connecting with extended-remote and the stub already being
8638 attached to a process, and reporting yes to qAttached, hence
8639 no smart special casing here. */
8640 if (!remote_multi_process_p (rs
))
8642 xsnprintf (buf
, sizeof buf
, "Remote target");
8646 return normal_pid_to_str (ptid
);
8650 if (ptid_equal (magic_null_ptid
, ptid
))
8651 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8652 else if (remote_multi_process_p (rs
))
8653 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8654 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8656 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8657 ptid_get_tid (ptid
));
8662 /* Get the address of the thread local variable in OBJFILE which is
8663 stored at OFFSET within the thread local storage for thread PTID. */
8666 remote_get_thread_local_address (struct target_ops
*ops
,
8667 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8669 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8671 struct remote_state
*rs
= get_remote_state ();
8673 char *endp
= rs
->buf
+ get_remote_packet_size ();
8674 enum packet_result result
;
8676 strcpy (p
, "qGetTLSAddr:");
8678 p
= write_ptid (p
, endp
, ptid
);
8680 p
+= hexnumstr (p
, offset
);
8682 p
+= hexnumstr (p
, lm
);
8686 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8687 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8688 if (result
== PACKET_OK
)
8692 unpack_varlen_hex (rs
->buf
, &result
);
8695 else if (result
== PACKET_UNKNOWN
)
8696 throw_error (TLS_GENERIC_ERROR
,
8697 _("Remote target doesn't support qGetTLSAddr packet"));
8699 throw_error (TLS_GENERIC_ERROR
,
8700 _("Remote target failed to process qGetTLSAddr request"));
8703 throw_error (TLS_GENERIC_ERROR
,
8704 _("TLS not supported or disabled on this target"));
8709 /* Provide thread local base, i.e. Thread Information Block address.
8710 Returns 1 if ptid is found and thread_local_base is non zero. */
8713 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
8715 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
8717 struct remote_state
*rs
= get_remote_state ();
8719 char *endp
= rs
->buf
+ get_remote_packet_size ();
8720 enum packet_result result
;
8722 strcpy (p
, "qGetTIBAddr:");
8724 p
= write_ptid (p
, endp
, ptid
);
8728 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8729 result
= packet_ok (rs
->buf
,
8730 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
8731 if (result
== PACKET_OK
)
8735 unpack_varlen_hex (rs
->buf
, &result
);
8737 *addr
= (CORE_ADDR
) result
;
8740 else if (result
== PACKET_UNKNOWN
)
8741 error (_("Remote target doesn't support qGetTIBAddr packet"));
8743 error (_("Remote target failed to process qGetTIBAddr request"));
8746 error (_("qGetTIBAddr not supported or disabled on this target"));
8751 /* Support for inferring a target description based on the current
8752 architecture and the size of a 'g' packet. While the 'g' packet
8753 can have any size (since optional registers can be left off the
8754 end), some sizes are easily recognizable given knowledge of the
8755 approximate architecture. */
8757 struct remote_g_packet_guess
8760 const struct target_desc
*tdesc
;
8762 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
8763 DEF_VEC_O(remote_g_packet_guess_s
);
8765 struct remote_g_packet_data
8767 VEC(remote_g_packet_guess_s
) *guesses
;
8770 static struct gdbarch_data
*remote_g_packet_data_handle
;
8773 remote_g_packet_data_init (struct obstack
*obstack
)
8775 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
8779 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
8780 const struct target_desc
*tdesc
)
8782 struct remote_g_packet_data
*data
8783 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
8784 struct remote_g_packet_guess new_guess
, *guess
;
8787 gdb_assert (tdesc
!= NULL
);
8790 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8792 if (guess
->bytes
== bytes
)
8793 internal_error (__FILE__
, __LINE__
,
8794 "Duplicate g packet description added for size %d",
8797 new_guess
.bytes
= bytes
;
8798 new_guess
.tdesc
= tdesc
;
8799 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
8802 /* Return 1 if remote_read_description would do anything on this target
8803 and architecture, 0 otherwise. */
8806 remote_read_description_p (struct target_ops
*target
)
8808 struct remote_g_packet_data
*data
8809 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8811 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8817 static const struct target_desc
*
8818 remote_read_description (struct target_ops
*target
)
8820 struct remote_g_packet_data
*data
8821 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8823 /* Do not try this during initial connection, when we do not know
8824 whether there is a running but stopped thread. */
8825 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
8828 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8830 struct remote_g_packet_guess
*guess
;
8832 int bytes
= send_g_packet ();
8835 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8837 if (guess
->bytes
== bytes
)
8838 return guess
->tdesc
;
8840 /* We discard the g packet. A minor optimization would be to
8841 hold on to it, and fill the register cache once we have selected
8842 an architecture, but it's too tricky to do safely. */
8848 /* Remote file transfer support. This is host-initiated I/O, not
8849 target-initiated; for target-initiated, see remote-fileio.c. */
8851 /* If *LEFT is at least the length of STRING, copy STRING to
8852 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8853 decrease *LEFT. Otherwise raise an error. */
8856 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
8858 int len
= strlen (string
);
8861 error (_("Packet too long for target."));
8863 memcpy (*buffer
, string
, len
);
8867 /* NUL-terminate the buffer as a convenience, if there is
8873 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
8874 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8875 decrease *LEFT. Otherwise raise an error. */
8878 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
8881 if (2 * len
> *left
)
8882 error (_("Packet too long for target."));
8884 bin2hex (bytes
, *buffer
, len
);
8888 /* NUL-terminate the buffer as a convenience, if there is
8894 /* If *LEFT is large enough, convert VALUE to hex and add it to
8895 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8896 decrease *LEFT. Otherwise raise an error. */
8899 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
8901 int len
= hexnumlen (value
);
8904 error (_("Packet too long for target."));
8906 hexnumstr (*buffer
, value
);
8910 /* NUL-terminate the buffer as a convenience, if there is
8916 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
8917 value, *REMOTE_ERRNO to the remote error number or zero if none
8918 was included, and *ATTACHMENT to point to the start of the annex
8919 if any. The length of the packet isn't needed here; there may
8920 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
8922 Return 0 if the packet could be parsed, -1 if it could not. If
8923 -1 is returned, the other variables may not be initialized. */
8926 remote_hostio_parse_result (char *buffer
, int *retcode
,
8927 int *remote_errno
, char **attachment
)
8934 if (buffer
[0] != 'F')
8938 *retcode
= strtol (&buffer
[1], &p
, 16);
8939 if (errno
!= 0 || p
== &buffer
[1])
8942 /* Check for ",errno". */
8946 *remote_errno
= strtol (p
+ 1, &p2
, 16);
8947 if (errno
!= 0 || p
+ 1 == p2
)
8952 /* Check for ";attachment". If there is no attachment, the
8953 packet should end here. */
8956 *attachment
= p
+ 1;
8959 else if (*p
== '\0')
8965 /* Send a prepared I/O packet to the target and read its response.
8966 The prepared packet is in the global RS->BUF before this function
8967 is called, and the answer is there when we return.
8969 COMMAND_BYTES is the length of the request to send, which may include
8970 binary data. WHICH_PACKET is the packet configuration to check
8971 before attempting a packet. If an error occurs, *REMOTE_ERRNO
8972 is set to the error number and -1 is returned. Otherwise the value
8973 returned by the function is returned.
8975 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
8976 attachment is expected; an error will be reported if there's a
8977 mismatch. If one is found, *ATTACHMENT will be set to point into
8978 the packet buffer and *ATTACHMENT_LEN will be set to the
8979 attachment's length. */
8982 remote_hostio_send_command (int command_bytes
, int which_packet
,
8983 int *remote_errno
, char **attachment
,
8984 int *attachment_len
)
8986 struct remote_state
*rs
= get_remote_state ();
8987 int ret
, bytes_read
;
8988 char *attachment_tmp
;
8991 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
8993 *remote_errno
= FILEIO_ENOSYS
;
8997 putpkt_binary (rs
->buf
, command_bytes
);
8998 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9000 /* If it timed out, something is wrong. Don't try to parse the
9004 *remote_errno
= FILEIO_EINVAL
;
9008 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9011 *remote_errno
= FILEIO_EINVAL
;
9013 case PACKET_UNKNOWN
:
9014 *remote_errno
= FILEIO_ENOSYS
;
9020 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9023 *remote_errno
= FILEIO_EINVAL
;
9027 /* Make sure we saw an attachment if and only if we expected one. */
9028 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9029 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9031 *remote_errno
= FILEIO_EINVAL
;
9035 /* If an attachment was found, it must point into the packet buffer;
9036 work out how many bytes there were. */
9037 if (attachment_tmp
!= NULL
)
9039 *attachment
= attachment_tmp
;
9040 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9046 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9047 remote file descriptor, or -1 if an error occurs (and set
9051 remote_hostio_open (const char *filename
, int flags
, int mode
,
9054 struct remote_state
*rs
= get_remote_state ();
9056 int left
= get_remote_packet_size () - 1;
9058 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9060 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9062 remote_buffer_add_string (&p
, &left
, ",");
9064 remote_buffer_add_int (&p
, &left
, flags
);
9065 remote_buffer_add_string (&p
, &left
, ",");
9067 remote_buffer_add_int (&p
, &left
, mode
);
9069 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9070 remote_errno
, NULL
, NULL
);
9073 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9074 Return the number of bytes written, or -1 if an error occurs (and
9075 set *REMOTE_ERRNO). */
9078 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9079 ULONGEST offset
, int *remote_errno
)
9081 struct remote_state
*rs
= get_remote_state ();
9083 int left
= get_remote_packet_size ();
9086 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9088 remote_buffer_add_int (&p
, &left
, fd
);
9089 remote_buffer_add_string (&p
, &left
, ",");
9091 remote_buffer_add_int (&p
, &left
, offset
);
9092 remote_buffer_add_string (&p
, &left
, ",");
9094 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9095 get_remote_packet_size () - (p
- rs
->buf
));
9097 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9098 remote_errno
, NULL
, NULL
);
9101 /* Read up to LEN bytes FD on the remote target into READ_BUF
9102 Return the number of bytes read, or -1 if an error occurs (and
9103 set *REMOTE_ERRNO). */
9106 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9107 ULONGEST offset
, int *remote_errno
)
9109 struct remote_state
*rs
= get_remote_state ();
9112 int left
= get_remote_packet_size ();
9113 int ret
, attachment_len
;
9116 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9118 remote_buffer_add_int (&p
, &left
, fd
);
9119 remote_buffer_add_string (&p
, &left
, ",");
9121 remote_buffer_add_int (&p
, &left
, len
);
9122 remote_buffer_add_string (&p
, &left
, ",");
9124 remote_buffer_add_int (&p
, &left
, offset
);
9126 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9127 remote_errno
, &attachment
,
9133 read_len
= remote_unescape_input (attachment
, attachment_len
,
9135 if (read_len
!= ret
)
9136 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9141 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9142 (and set *REMOTE_ERRNO). */
9145 remote_hostio_close (int fd
, int *remote_errno
)
9147 struct remote_state
*rs
= get_remote_state ();
9149 int left
= get_remote_packet_size () - 1;
9151 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9153 remote_buffer_add_int (&p
, &left
, fd
);
9155 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9156 remote_errno
, NULL
, NULL
);
9159 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9160 occurs (and set *REMOTE_ERRNO). */
9163 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9165 struct remote_state
*rs
= get_remote_state ();
9167 int left
= get_remote_packet_size () - 1;
9169 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9171 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9174 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9175 remote_errno
, NULL
, NULL
);
9179 remote_fileio_errno_to_host (int errnum
)
9203 case FILEIO_ENOTDIR
:
9223 case FILEIO_ENAMETOOLONG
:
9224 return ENAMETOOLONG
;
9230 remote_hostio_error (int errnum
)
9232 int host_error
= remote_fileio_errno_to_host (errnum
);
9234 if (host_error
== -1)
9235 error (_("Unknown remote I/O error %d"), errnum
);
9237 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9241 remote_hostio_close_cleanup (void *opaque
)
9243 int fd
= *(int *) opaque
;
9246 remote_hostio_close (fd
, &remote_errno
);
9251 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9253 const char *filename
= bfd_get_filename (abfd
);
9254 int fd
, remote_errno
;
9257 gdb_assert (remote_filename_p (filename
));
9259 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9262 errno
= remote_fileio_errno_to_host (remote_errno
);
9263 bfd_set_error (bfd_error_system_call
);
9267 stream
= xmalloc (sizeof (int));
9273 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9275 int fd
= *(int *)stream
;
9280 /* Ignore errors on close; these may happen if the remote
9281 connection was already torn down. */
9282 remote_hostio_close (fd
, &remote_errno
);
9288 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9289 file_ptr nbytes
, file_ptr offset
)
9291 int fd
= *(int *)stream
;
9293 file_ptr pos
, bytes
;
9296 while (nbytes
> pos
)
9298 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9299 offset
+ pos
, &remote_errno
);
9301 /* Success, but no bytes, means end-of-file. */
9305 errno
= remote_fileio_errno_to_host (remote_errno
);
9306 bfd_set_error (bfd_error_system_call
);
9317 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9319 /* FIXME: We should probably implement remote_hostio_stat. */
9320 sb
->st_size
= INT_MAX
;
9325 remote_filename_p (const char *filename
)
9327 return strncmp (filename
, "remote:", 7) == 0;
9331 remote_bfd_open (const char *remote_file
, const char *target
)
9333 return bfd_openr_iovec (remote_file
, target
,
9334 remote_bfd_iovec_open
, NULL
,
9335 remote_bfd_iovec_pread
,
9336 remote_bfd_iovec_close
,
9337 remote_bfd_iovec_stat
);
9341 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9343 struct cleanup
*back_to
, *close_cleanup
;
9344 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9347 int bytes_in_buffer
;
9352 error (_("command can only be used with remote target"));
9354 file
= fopen (local_file
, "rb");
9356 perror_with_name (local_file
);
9357 back_to
= make_cleanup_fclose (file
);
9359 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9361 0700, &remote_errno
);
9363 remote_hostio_error (remote_errno
);
9365 /* Send up to this many bytes at once. They won't all fit in the
9366 remote packet limit, so we'll transfer slightly fewer. */
9367 io_size
= get_remote_packet_size ();
9368 buffer
= xmalloc (io_size
);
9369 make_cleanup (xfree
, buffer
);
9371 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9373 bytes_in_buffer
= 0;
9376 while (bytes_in_buffer
|| !saw_eof
)
9380 bytes
= fread (buffer
+ bytes_in_buffer
, 1, io_size
- bytes_in_buffer
,
9385 error (_("Error reading %s."), local_file
);
9388 /* EOF. Unless there is something still in the
9389 buffer from the last iteration, we are done. */
9391 if (bytes_in_buffer
== 0)
9399 bytes
+= bytes_in_buffer
;
9400 bytes_in_buffer
= 0;
9402 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
, offset
, &remote_errno
);
9405 remote_hostio_error (remote_errno
);
9406 else if (retcode
== 0)
9407 error (_("Remote write of %d bytes returned 0!"), bytes
);
9408 else if (retcode
< bytes
)
9410 /* Short write. Save the rest of the read data for the next
9412 bytes_in_buffer
= bytes
- retcode
;
9413 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9419 discard_cleanups (close_cleanup
);
9420 if (remote_hostio_close (fd
, &remote_errno
))
9421 remote_hostio_error (remote_errno
);
9424 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9425 do_cleanups (back_to
);
9429 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9431 struct cleanup
*back_to
, *close_cleanup
;
9432 int fd
, remote_errno
, bytes
, io_size
;
9438 error (_("command can only be used with remote target"));
9440 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9442 remote_hostio_error (remote_errno
);
9444 file
= fopen (local_file
, "wb");
9446 perror_with_name (local_file
);
9447 back_to
= make_cleanup_fclose (file
);
9449 /* Send up to this many bytes at once. They won't all fit in the
9450 remote packet limit, so we'll transfer slightly fewer. */
9451 io_size
= get_remote_packet_size ();
9452 buffer
= xmalloc (io_size
);
9453 make_cleanup (xfree
, buffer
);
9455 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9460 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9462 /* Success, but no bytes, means end-of-file. */
9465 remote_hostio_error (remote_errno
);
9469 bytes
= fwrite (buffer
, 1, bytes
, file
);
9471 perror_with_name (local_file
);
9474 discard_cleanups (close_cleanup
);
9475 if (remote_hostio_close (fd
, &remote_errno
))
9476 remote_hostio_error (remote_errno
);
9479 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9480 do_cleanups (back_to
);
9484 remote_file_delete (const char *remote_file
, int from_tty
)
9486 int retcode
, remote_errno
;
9489 error (_("command can only be used with remote target"));
9491 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9493 remote_hostio_error (remote_errno
);
9496 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9500 remote_put_command (char *args
, int from_tty
)
9502 struct cleanup
*back_to
;
9506 error_no_arg (_("file to put"));
9508 argv
= gdb_buildargv (args
);
9509 back_to
= make_cleanup_freeargv (argv
);
9510 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9511 error (_("Invalid parameters to remote put"));
9513 remote_file_put (argv
[0], argv
[1], from_tty
);
9515 do_cleanups (back_to
);
9519 remote_get_command (char *args
, int from_tty
)
9521 struct cleanup
*back_to
;
9525 error_no_arg (_("file to get"));
9527 argv
= gdb_buildargv (args
);
9528 back_to
= make_cleanup_freeargv (argv
);
9529 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9530 error (_("Invalid parameters to remote get"));
9532 remote_file_get (argv
[0], argv
[1], from_tty
);
9534 do_cleanups (back_to
);
9538 remote_delete_command (char *args
, int from_tty
)
9540 struct cleanup
*back_to
;
9544 error_no_arg (_("file to delete"));
9546 argv
= gdb_buildargv (args
);
9547 back_to
= make_cleanup_freeargv (argv
);
9548 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9549 error (_("Invalid parameters to remote delete"));
9551 remote_file_delete (argv
[0], from_tty
);
9553 do_cleanups (back_to
);
9557 remote_command (char *args
, int from_tty
)
9559 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9563 remote_can_execute_reverse (void)
9565 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9566 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9573 remote_supports_non_stop (void)
9579 remote_supports_multi_process (void)
9581 struct remote_state
*rs
= get_remote_state ();
9583 return remote_multi_process_p (rs
);
9587 remote_supports_cond_tracepoints (void)
9589 struct remote_state
*rs
= get_remote_state ();
9591 return rs
->cond_tracepoints
;
9595 remote_supports_fast_tracepoints (void)
9597 struct remote_state
*rs
= get_remote_state ();
9599 return rs
->fast_tracepoints
;
9603 remote_supports_static_tracepoints (void)
9605 struct remote_state
*rs
= get_remote_state ();
9607 return rs
->static_tracepoints
;
9611 remote_trace_init (void)
9614 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9615 if (strcmp (target_buf
, "OK") != 0)
9616 error (_("Target does not support this command."));
9619 static void free_actions_list (char **actions_list
);
9620 static void free_actions_list_cleanup_wrapper (void *);
9622 free_actions_list_cleanup_wrapper (void *al
)
9624 free_actions_list (al
);
9628 free_actions_list (char **actions_list
)
9632 if (actions_list
== 0)
9635 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9636 xfree (actions_list
[ndx
]);
9638 xfree (actions_list
);
9641 /* Recursive routine to walk through command list including loops, and
9642 download packets for each command. */
9645 remote_download_command_source (int num
, ULONGEST addr
,
9646 struct command_line
*cmds
)
9648 struct remote_state
*rs
= get_remote_state ();
9649 struct command_line
*cmd
;
9651 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
9653 QUIT
; /* allow user to bail out with ^C */
9654 strcpy (rs
->buf
, "QTDPsrc:");
9655 encode_source_string (num
, addr
, "cmd", cmd
->line
,
9656 rs
->buf
+ strlen (rs
->buf
),
9657 rs
->buf_size
- strlen (rs
->buf
));
9659 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9660 if (strcmp (target_buf
, "OK"))
9661 warning (_("Target does not support source download."));
9663 if (cmd
->control_type
== while_control
9664 || cmd
->control_type
== while_stepping_control
)
9666 remote_download_command_source (num
, addr
, *cmd
->body_list
);
9668 QUIT
; /* allow user to bail out with ^C */
9669 strcpy (rs
->buf
, "QTDPsrc:");
9670 encode_source_string (num
, addr
, "cmd", "end",
9671 rs
->buf
+ strlen (rs
->buf
),
9672 rs
->buf_size
- strlen (rs
->buf
));
9674 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9675 if (strcmp (target_buf
, "OK"))
9676 warning (_("Target does not support source download."));
9682 remote_download_tracepoint (struct breakpoint
*t
)
9684 struct bp_location
*loc
;
9689 char **stepping_actions
;
9691 struct cleanup
*old_chain
= NULL
;
9692 struct agent_expr
*aexpr
;
9693 struct cleanup
*aexpr_chain
= NULL
;
9696 /* Iterate over all the tracepoint locations. It's up to the target to
9697 notice multiple tracepoint packets with the same number but different
9698 addresses, and treat them as multiple locations. */
9699 for (loc
= t
->loc
; loc
; loc
= loc
->next
)
9701 encode_actions (t
, loc
, &tdp_actions
, &stepping_actions
);
9702 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
9704 (void) make_cleanup (free_actions_list_cleanup_wrapper
, stepping_actions
);
9706 tpaddr
= loc
->address
;
9707 sprintf_vma (addrbuf
, tpaddr
);
9708 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", t
->number
,
9709 addrbuf
, /* address */
9710 (t
->enable_state
== bp_enabled
? 'E' : 'D'),
9711 t
->step_count
, t
->pass_count
);
9712 /* Fast tracepoints are mostly handled by the target, but we can
9713 tell the target how big of an instruction block should be moved
9715 if (t
->type
== bp_fast_tracepoint
)
9717 /* Only test for support at download time; we may not know
9718 target capabilities at definition time. */
9719 if (remote_supports_fast_tracepoints ())
9723 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
9724 tpaddr
, &isize
, NULL
))
9725 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
9727 /* If it passed validation at definition but fails now,
9728 something is very wrong. */
9729 internal_error (__FILE__
, __LINE__
,
9730 "Fast tracepoint not valid during download");
9733 /* Fast tracepoints are functionally identical to regular
9734 tracepoints, so don't take lack of support as a reason to
9735 give up on the trace run. */
9736 warning (_("Target does not support fast tracepoints, downloading %d as regular tracepoint"), t
->number
);
9738 else if (t
->type
== bp_static_tracepoint
)
9740 /* Only test for support at download time; we may not know
9741 target capabilities at definition time. */
9742 if (remote_supports_static_tracepoints ())
9744 struct static_tracepoint_marker marker
;
9746 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
9749 error ("Static tracepoint not valid during download");
9752 /* Fast tracepoints are functionally identical to regular
9753 tracepoints, so don't take lack of support as a reason
9754 to give up on the trace run. */
9755 error (_("Target does not support static tracepoints"));
9757 /* If the tracepoint has a conditional, make it into an agent
9758 expression and append to the definition. */
9761 /* Only test support at download time, we may not know target
9762 capabilities at definition time. */
9763 if (remote_supports_cond_tracepoints ())
9765 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
9766 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
9767 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
9768 pkt
= buf
+ strlen (buf
);
9769 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
9770 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
9772 do_cleanups (aexpr_chain
);
9775 warning (_("Target does not support conditional tracepoints, ignoring tp %d cond"), t
->number
);
9778 if (t
->commands
|| *default_collect
)
9781 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9782 if (strcmp (target_buf
, "OK"))
9783 error (_("Target does not support tracepoints."));
9785 /* do_single_steps (t); */
9788 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
9790 QUIT
; /* allow user to bail out with ^C */
9791 sprintf (buf
, "QTDP:-%x:%s:%s%c",
9792 t
->number
, addrbuf
, /* address */
9794 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
9797 remote_get_noisy_reply (&target_buf
,
9799 if (strcmp (target_buf
, "OK"))
9800 error (_("Error on target while setting tracepoints."));
9803 if (stepping_actions
)
9805 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
9807 QUIT
; /* allow user to bail out with ^C */
9808 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
9809 t
->number
, addrbuf
, /* address */
9810 ((ndx
== 0) ? "S" : ""),
9811 stepping_actions
[ndx
],
9812 (stepping_actions
[ndx
+ 1] ? "-" : ""));
9814 remote_get_noisy_reply (&target_buf
,
9816 if (strcmp (target_buf
, "OK"))
9817 error (_("Error on target while setting tracepoints."));
9821 if (remote_protocol_packets
[PACKET_TracepointSource
].support
== PACKET_ENABLE
)
9825 strcpy (buf
, "QTDPsrc:");
9826 encode_source_string (t
->number
, loc
->address
,
9827 "at", t
->addr_string
, buf
+ strlen (buf
),
9828 2048 - strlen (buf
));
9831 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9832 if (strcmp (target_buf
, "OK"))
9833 warning (_("Target does not support source download."));
9837 strcpy (buf
, "QTDPsrc:");
9838 encode_source_string (t
->number
, loc
->address
,
9839 "cond", t
->cond_string
, buf
+ strlen (buf
),
9840 2048 - strlen (buf
));
9842 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9843 if (strcmp (target_buf
, "OK"))
9844 warning (_("Target does not support source download."));
9846 remote_download_command_source (t
->number
, loc
->address
,
9847 breakpoint_commands (t
));
9850 do_cleanups (old_chain
);
9855 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
9857 struct remote_state
*rs
= get_remote_state ();
9860 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
9861 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
9862 p
= rs
->buf
+ strlen (rs
->buf
);
9863 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
9864 error (_("Trace state variable name too long for tsv definition packet"));
9865 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
9868 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9869 if (*target_buf
== '\0')
9870 error (_("Target does not support this command."));
9871 if (strcmp (target_buf
, "OK") != 0)
9872 error (_("Error on target while downloading trace state variable."));
9876 remote_trace_set_readonly_regions (void)
9884 return; /* No information to give. */
9886 strcpy (target_buf
, "QTro");
9887 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9889 char tmp1
[40], tmp2
[40];
9891 if ((s
->flags
& SEC_LOAD
) == 0 ||
9892 /* (s->flags & SEC_CODE) == 0 || */
9893 (s
->flags
& SEC_READONLY
) == 0)
9898 size
= bfd_get_section_size (s
);
9899 sprintf_vma (tmp1
, lma
);
9900 sprintf_vma (tmp2
, lma
+ size
);
9901 sprintf (target_buf
+ strlen (target_buf
),
9902 ":%s,%s", tmp1
, tmp2
);
9906 putpkt (target_buf
);
9907 getpkt (&target_buf
, &target_buf_size
, 0);
9912 remote_trace_start (void)
9915 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9916 if (*target_buf
== '\0')
9917 error (_("Target does not support this command."));
9918 if (strcmp (target_buf
, "OK") != 0)
9919 error (_("Bogus reply from target: %s"), target_buf
);
9923 remote_get_trace_status (struct trace_status
*ts
)
9926 /* FIXME we need to get register block size some other way */
9927 extern int trace_regblock_size
;
9929 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
9931 putpkt ("qTStatus");
9932 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9934 /* If the remote target doesn't do tracing, flag it. */
9938 /* We're working with a live target. */
9941 /* Set some defaults. */
9942 ts
->running_known
= 0;
9943 ts
->stop_reason
= trace_stop_reason_unknown
;
9944 ts
->traceframe_count
= -1;
9945 ts
->buffer_free
= 0;
9948 error (_("Bogus trace status reply from target: %s"), target_buf
);
9950 parse_trace_status (p
, ts
);
9956 remote_trace_stop (void)
9959 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9960 if (*target_buf
== '\0')
9961 error (_("Target does not support this command."));
9962 if (strcmp (target_buf
, "OK") != 0)
9963 error (_("Bogus reply from target: %s"), target_buf
);
9967 remote_trace_find (enum trace_find_type type
, int num
,
9968 ULONGEST addr1
, ULONGEST addr2
,
9971 struct remote_state
*rs
= get_remote_state ();
9973 int target_frameno
= -1, target_tracept
= -1;
9976 strcpy (p
, "QTFrame:");
9977 p
= strchr (p
, '\0');
9981 sprintf (p
, "%x", num
);
9984 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
9987 sprintf (p
, "tdp:%x", num
);
9990 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9993 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9996 error ("Unknown trace find type %d", type
);
10000 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10001 if (*reply
== '\0')
10002 error (_("Target does not support this command."));
10004 while (reply
&& *reply
)
10009 target_frameno
= (int) strtol (p
, &reply
, 16);
10011 error (_("Unable to parse trace frame number"));
10012 if (target_frameno
== -1)
10017 target_tracept
= (int) strtol (p
, &reply
, 16);
10019 error (_("Unable to parse tracepoint number"));
10021 case 'O': /* "OK"? */
10022 if (reply
[1] == 'K' && reply
[2] == '\0')
10025 error (_("Bogus reply from target: %s"), reply
);
10028 error (_("Bogus reply from target: %s"), reply
);
10031 *tpp
= target_tracept
;
10032 return target_frameno
;
10036 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10038 struct remote_state
*rs
= get_remote_state ();
10042 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
10044 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10045 if (reply
&& *reply
)
10049 unpack_varlen_hex (reply
+ 1, &uval
);
10050 *val
= (LONGEST
) uval
;
10058 remote_save_trace_data (const char *filename
)
10060 struct remote_state
*rs
= get_remote_state ();
10064 strcpy (p
, "QTSave:");
10066 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10067 error (_("Remote file name too long for trace save packet"));
10068 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10071 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10072 if (*reply
!= '\0')
10073 error (_("Target does not support this command."));
10074 if (strcmp (reply
, "OK") != 0)
10075 error (_("Bogus reply from target: %s"), reply
);
10079 /* This is basically a memory transfer, but needs to be its own packet
10080 because we don't know how the target actually organizes its trace
10081 memory, plus we want to be able to ask for as much as possible, but
10082 not be unhappy if we don't get as much as we ask for. */
10085 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10087 struct remote_state
*rs
= get_remote_state ();
10093 strcpy (p
, "qTBuffer:");
10095 p
+= hexnumstr (p
, offset
);
10097 p
+= hexnumstr (p
, len
);
10101 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10102 if (reply
&& *reply
)
10104 /* 'l' by itself means we're at the end of the buffer and
10105 there is nothing more to get. */
10109 /* Convert the reply into binary. Limit the number of bytes to
10110 convert according to our passed-in buffer size, rather than
10111 what was returned in the packet; if the target is
10112 unexpectedly generous and gives us a bigger reply than we
10113 asked for, we don't want to crash. */
10114 rslt
= hex2bin (target_buf
, buf
, len
);
10118 /* Something went wrong, flag as an error. */
10123 remote_set_disconnected_tracing (int val
)
10125 struct remote_state
*rs
= get_remote_state ();
10127 if (rs
->disconnected_tracing
)
10131 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
10133 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10134 if (*reply
== '\0')
10135 error (_("Target does not support this command."));
10136 if (strcmp (reply
, "OK") != 0)
10137 error (_("Bogus reply from target: %s"), reply
);
10140 warning (_("Target does not support disconnected tracing."));
10144 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10146 struct thread_info
*info
= find_thread_ptid (ptid
);
10148 if (info
&& info
->private)
10149 return info
->private->core
;
10154 remote_set_circular_trace_buffer (int val
)
10156 struct remote_state
*rs
= get_remote_state ();
10159 sprintf (rs
->buf
, "QTBuffer:circular:%x", val
);
10161 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10162 if (*reply
== '\0')
10163 error (_("Target does not support this command."));
10164 if (strcmp (reply
, "OK") != 0)
10165 error (_("Bogus reply from target: %s"), reply
);
10169 init_remote_ops (void)
10171 remote_ops
.to_shortname
= "remote";
10172 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
10173 remote_ops
.to_doc
=
10174 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10175 Specify the serial device it is connected to\n\
10176 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
10177 remote_ops
.to_open
= remote_open
;
10178 remote_ops
.to_close
= remote_close
;
10179 remote_ops
.to_detach
= remote_detach
;
10180 remote_ops
.to_disconnect
= remote_disconnect
;
10181 remote_ops
.to_resume
= remote_resume
;
10182 remote_ops
.to_wait
= remote_wait
;
10183 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
10184 remote_ops
.to_store_registers
= remote_store_registers
;
10185 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
10186 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
10187 remote_ops
.to_files_info
= remote_files_info
;
10188 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
10189 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
10190 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
10191 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
10192 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
10193 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
10194 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
10195 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
10196 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
10197 remote_ops
.to_kill
= remote_kill
;
10198 remote_ops
.to_load
= generic_load
;
10199 remote_ops
.to_mourn_inferior
= remote_mourn
;
10200 remote_ops
.to_notice_signals
= remote_notice_signals
;
10201 remote_ops
.to_thread_alive
= remote_thread_alive
;
10202 remote_ops
.to_find_new_threads
= remote_threads_info
;
10203 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
10204 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
10205 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
10206 remote_ops
.to_stop
= remote_stop
;
10207 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
10208 remote_ops
.to_rcmd
= remote_rcmd
;
10209 remote_ops
.to_log_command
= serial_log_command
;
10210 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
10211 remote_ops
.to_stratum
= process_stratum
;
10212 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
10213 remote_ops
.to_has_memory
= default_child_has_memory
;
10214 remote_ops
.to_has_stack
= default_child_has_stack
;
10215 remote_ops
.to_has_registers
= default_child_has_registers
;
10216 remote_ops
.to_has_execution
= default_child_has_execution
;
10217 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
10218 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
10219 remote_ops
.to_magic
= OPS_MAGIC
;
10220 remote_ops
.to_memory_map
= remote_memory_map
;
10221 remote_ops
.to_flash_erase
= remote_flash_erase
;
10222 remote_ops
.to_flash_done
= remote_flash_done
;
10223 remote_ops
.to_read_description
= remote_read_description
;
10224 remote_ops
.to_search_memory
= remote_search_memory
;
10225 remote_ops
.to_can_async_p
= remote_can_async_p
;
10226 remote_ops
.to_is_async_p
= remote_is_async_p
;
10227 remote_ops
.to_async
= remote_async
;
10228 remote_ops
.to_async_mask
= remote_async_mask
;
10229 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
10230 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
10231 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
10232 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
10233 remote_ops
.to_trace_init
= remote_trace_init
;
10234 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
10235 remote_ops
.to_download_trace_state_variable
= remote_download_trace_state_variable
;
10236 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
10237 remote_ops
.to_trace_start
= remote_trace_start
;
10238 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
10239 remote_ops
.to_trace_stop
= remote_trace_stop
;
10240 remote_ops
.to_trace_find
= remote_trace_find
;
10241 remote_ops
.to_get_trace_state_variable_value
= remote_get_trace_state_variable_value
;
10242 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
10243 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
10244 remote_ops
.to_upload_trace_state_variables
= remote_upload_trace_state_variables
;
10245 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
10246 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
10247 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
10248 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
10249 remote_ops
.to_verify_memory
= remote_verify_memory
;
10250 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
10251 remote_ops
.to_set_permissions
= remote_set_permissions
;
10252 remote_ops
.to_static_tracepoint_marker_at
10253 = remote_static_tracepoint_marker_at
;
10254 remote_ops
.to_static_tracepoint_markers_by_strid
10255 = remote_static_tracepoint_markers_by_strid
;
10258 /* Set up the extended remote vector by making a copy of the standard
10259 remote vector and adding to it. */
10262 init_extended_remote_ops (void)
10264 extended_remote_ops
= remote_ops
;
10266 extended_remote_ops
.to_shortname
= "extended-remote";
10267 extended_remote_ops
.to_longname
=
10268 "Extended remote serial target in gdb-specific protocol";
10269 extended_remote_ops
.to_doc
=
10270 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10271 Specify the serial device it is connected to (e.g. /dev/ttya).";
10272 extended_remote_ops
.to_open
= extended_remote_open
;
10273 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
10274 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
10275 extended_remote_ops
.to_detach
= extended_remote_detach
;
10276 extended_remote_ops
.to_attach
= extended_remote_attach
;
10277 extended_remote_ops
.to_kill
= extended_remote_kill
;
10281 remote_can_async_p (void)
10283 if (!target_async_permitted
)
10284 /* We only enable async when the user specifically asks for it. */
10287 /* We're async whenever the serial device is. */
10288 return remote_async_mask_value
&& serial_can_async_p (remote_desc
);
10292 remote_is_async_p (void)
10294 if (!target_async_permitted
)
10295 /* We only enable async when the user specifically asks for it. */
10298 /* We're async whenever the serial device is. */
10299 return remote_async_mask_value
&& serial_is_async_p (remote_desc
);
10302 /* Pass the SERIAL event on and up to the client. One day this code
10303 will be able to delay notifying the client of an event until the
10304 point where an entire packet has been received. */
10306 static void (*async_client_callback
) (enum inferior_event_type event_type
,
10308 static void *async_client_context
;
10309 static serial_event_ftype remote_async_serial_handler
;
10312 remote_async_serial_handler (struct serial
*scb
, void *context
)
10314 /* Don't propogate error information up to the client. Instead let
10315 the client find out about the error by querying the target. */
10316 async_client_callback (INF_REG_EVENT
, async_client_context
);
10320 remote_async_inferior_event_handler (gdb_client_data data
)
10322 inferior_event_handler (INF_REG_EVENT
, NULL
);
10326 remote_async_get_pending_events_handler (gdb_client_data data
)
10328 remote_get_pending_stop_replies ();
10332 remote_async (void (*callback
) (enum inferior_event_type event_type
,
10333 void *context
), void *context
)
10335 if (remote_async_mask_value
== 0)
10336 internal_error (__FILE__
, __LINE__
,
10337 _("Calling remote_async when async is masked"));
10339 if (callback
!= NULL
)
10341 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
10342 async_client_callback
= callback
;
10343 async_client_context
= context
;
10346 serial_async (remote_desc
, NULL
, NULL
);
10350 remote_async_mask (int new_mask
)
10352 int curr_mask
= remote_async_mask_value
;
10354 remote_async_mask_value
= new_mask
;
10359 set_remote_cmd (char *args
, int from_tty
)
10361 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
10365 show_remote_cmd (char *args
, int from_tty
)
10367 /* We can't just use cmd_show_list here, because we want to skip
10368 the redundant "show remote Z-packet" and the legacy aliases. */
10369 struct cleanup
*showlist_chain
;
10370 struct cmd_list_element
*list
= remote_show_cmdlist
;
10372 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
10373 for (; list
!= NULL
; list
= list
->next
)
10374 if (strcmp (list
->name
, "Z-packet") == 0)
10376 else if (list
->type
== not_set_cmd
)
10377 /* Alias commands are exactly like the original, except they
10378 don't have the normal type. */
10382 struct cleanup
*option_chain
10383 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
10385 ui_out_field_string (uiout
, "name", list
->name
);
10386 ui_out_text (uiout
, ": ");
10387 if (list
->type
== show_cmd
)
10388 do_setshow_command ((char *) NULL
, from_tty
, list
);
10390 cmd_func (list
, NULL
, from_tty
);
10391 /* Close the tuple. */
10392 do_cleanups (option_chain
);
10395 /* Close the tuple. */
10396 do_cleanups (showlist_chain
);
10400 /* Function to be called whenever a new objfile (shlib) is detected. */
10402 remote_new_objfile (struct objfile
*objfile
)
10404 if (remote_desc
!= 0) /* Have a remote connection. */
10405 remote_check_symbols (objfile
);
10408 /* Pull all the tracepoints defined on the target and create local
10409 data structures representing them. We don't want to create real
10410 tracepoints yet, we don't want to mess up the user's existing
10414 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
10416 struct remote_state
*rs
= get_remote_state ();
10419 /* Ask for a first packet of tracepoint definition. */
10421 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10423 while (*p
&& *p
!= 'l')
10425 parse_tracepoint_definition (p
, utpp
);
10426 /* Ask for another packet of tracepoint definition. */
10428 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10435 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
10437 struct remote_state
*rs
= get_remote_state ();
10440 /* Ask for a first packet of variable definition. */
10442 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10444 while (*p
&& *p
!= 'l')
10446 parse_tsv_definition (p
, utsvp
);
10447 /* Ask for another packet of variable definition. */
10449 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10456 _initialize_remote (void)
10458 struct remote_state
*rs
;
10459 struct cmd_list_element
*cmd
;
10462 /* architecture specific data */
10463 remote_gdbarch_data_handle
=
10464 gdbarch_data_register_post_init (init_remote_state
);
10465 remote_g_packet_data_handle
=
10466 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
10468 /* Initialize the per-target state. At the moment there is only one
10469 of these, not one per target. Only one target is active at a
10470 time. The default buffer size is unimportant; it will be expanded
10471 whenever a larger buffer is needed. */
10472 rs
= get_remote_state_raw ();
10473 rs
->buf_size
= 400;
10474 rs
->buf
= xmalloc (rs
->buf_size
);
10476 init_remote_ops ();
10477 add_target (&remote_ops
);
10479 init_extended_remote_ops ();
10480 add_target (&extended_remote_ops
);
10482 /* Hook into new objfile notification. */
10483 observer_attach_new_objfile (remote_new_objfile
);
10485 /* Set up signal handlers. */
10486 sigint_remote_token
=
10487 create_async_signal_handler (async_remote_interrupt
, NULL
);
10488 sigint_remote_twice_token
=
10489 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
10492 init_remote_threadtests ();
10495 /* set/show remote ... */
10497 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
10498 Remote protocol specific variables\n\
10499 Configure various remote-protocol specific variables such as\n\
10500 the packets being used"),
10501 &remote_set_cmdlist
, "set remote ",
10502 0 /* allow-unknown */, &setlist
);
10503 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
10504 Remote protocol specific variables\n\
10505 Configure various remote-protocol specific variables such as\n\
10506 the packets being used"),
10507 &remote_show_cmdlist
, "show remote ",
10508 0 /* allow-unknown */, &showlist
);
10510 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
10511 Compare section data on target to the exec file.\n\
10512 Argument is a single section name (default: all loaded sections)."),
10515 add_cmd ("packet", class_maintenance
, packet_command
, _("\
10516 Send an arbitrary packet to a remote target.\n\
10517 maintenance packet TEXT\n\
10518 If GDB is talking to an inferior via the GDB serial protocol, then\n\
10519 this command sends the string TEXT to the inferior, and displays the\n\
10520 response packet. GDB supplies the initial `$' character, and the\n\
10521 terminating `#' character and checksum."),
10524 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
10525 Set whether to send break if interrupted."), _("\
10526 Show whether to send break if interrupted."), _("\
10527 If set, a break, instead of a cntrl-c, is sent to the remote target."),
10528 set_remotebreak
, show_remotebreak
,
10529 &setlist
, &showlist
);
10530 cmd_name
= "remotebreak";
10531 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
10532 deprecate_cmd (cmd
, "set remote interrupt-sequence");
10533 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
10534 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
10535 deprecate_cmd (cmd
, "show remote interrupt-sequence");
10537 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
10538 interrupt_sequence_modes
, &interrupt_sequence_mode
, _("\
10539 Set interrupt sequence to remote target."), _("\
10540 Show interrupt sequence to remote target."), _("\
10541 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
10542 NULL
, show_interrupt_sequence
,
10543 &remote_set_cmdlist
,
10544 &remote_show_cmdlist
);
10546 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
10547 &interrupt_on_connect
, _("\
10548 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10549 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10550 If set, interrupt sequence is sent to remote target."),
10552 &remote_set_cmdlist
, &remote_show_cmdlist
);
10554 /* Install commands for configuring memory read/write packets. */
10556 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
10557 Set the maximum number of bytes per memory write packet (deprecated)."),
10559 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
10560 Show the maximum number of bytes per memory write packet (deprecated)."),
10562 add_cmd ("memory-write-packet-size", no_class
,
10563 set_memory_write_packet_size
, _("\
10564 Set the maximum number of bytes per memory-write packet.\n\
10565 Specify the number of bytes in a packet or 0 (zero) for the\n\
10566 default packet size. The actual limit is further reduced\n\
10567 dependent on the target. Specify ``fixed'' to disable the\n\
10568 further restriction and ``limit'' to enable that restriction."),
10569 &remote_set_cmdlist
);
10570 add_cmd ("memory-read-packet-size", no_class
,
10571 set_memory_read_packet_size
, _("\
10572 Set the maximum number of bytes per memory-read packet.\n\
10573 Specify the number of bytes in a packet or 0 (zero) for the\n\
10574 default packet size. The actual limit is further reduced\n\
10575 dependent on the target. Specify ``fixed'' to disable the\n\
10576 further restriction and ``limit'' to enable that restriction."),
10577 &remote_set_cmdlist
);
10578 add_cmd ("memory-write-packet-size", no_class
,
10579 show_memory_write_packet_size
,
10580 _("Show the maximum number of bytes per memory-write packet."),
10581 &remote_show_cmdlist
);
10582 add_cmd ("memory-read-packet-size", no_class
,
10583 show_memory_read_packet_size
,
10584 _("Show the maximum number of bytes per memory-read packet."),
10585 &remote_show_cmdlist
);
10587 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
10588 &remote_hw_watchpoint_limit
, _("\
10589 Set the maximum number of target hardware watchpoints."), _("\
10590 Show the maximum number of target hardware watchpoints."), _("\
10591 Specify a negative limit for unlimited."),
10592 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
10593 &remote_set_cmdlist
, &remote_show_cmdlist
);
10594 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
10595 &remote_hw_breakpoint_limit
, _("\
10596 Set the maximum number of target hardware breakpoints."), _("\
10597 Show the maximum number of target hardware breakpoints."), _("\
10598 Specify a negative limit for unlimited."),
10599 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware 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", "conditional-tracepoints", 0);
10725 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
10726 "FastTracepoints", "fast-tracepoints", 0);
10728 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
10729 "TracepointSource", "TracepointSource", 0);
10731 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
10732 "QAllow", "allow", 0);
10734 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
10735 "StaticTracepoints", "static-tracepoints", 0);
10737 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
10738 "qXfer:statictrace:read", "read-sdata-object", 0);
10740 /* Keep the old ``set remote Z-packet ...'' working. Each individual
10741 Z sub-packet has its own set and show commands, but users may
10742 have sets to this variable in their .gdbinit files (or in their
10744 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
10745 &remote_Z_packet_detect
, _("\
10746 Set use of remote protocol `Z' packets"), _("\
10747 Show use of remote protocol `Z' packets "), _("\
10748 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
10750 set_remote_protocol_Z_packet_cmd
,
10751 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
10752 &remote_set_cmdlist
, &remote_show_cmdlist
);
10754 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
10755 Manipulate files on the remote system\n\
10756 Transfer files to and from the remote target system."),
10757 &remote_cmdlist
, "remote ",
10758 0 /* allow-unknown */, &cmdlist
);
10760 add_cmd ("put", class_files
, remote_put_command
,
10761 _("Copy a local file to the remote system."),
10764 add_cmd ("get", class_files
, remote_get_command
,
10765 _("Copy a remote file to the local system."),
10768 add_cmd ("delete", class_files
, remote_delete_command
,
10769 _("Delete a remote file."),
10772 remote_exec_file
= xstrdup ("");
10773 add_setshow_string_noescape_cmd ("exec-file", class_files
,
10774 &remote_exec_file
, _("\
10775 Set the remote pathname for \"run\""), _("\
10776 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
10777 &remote_set_cmdlist
, &remote_show_cmdlist
);
10779 /* Eventually initialize fileio. See fileio.c */
10780 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
10782 /* Take advantage of the fact that the LWP field is not used, to tag
10783 special ptids with it set to != 0. */
10784 magic_null_ptid
= ptid_build (42000, 1, -1);
10785 not_sent_ptid
= ptid_build (42000, 1, -2);
10786 any_thread_ptid
= ptid_build (42000, 1, 0);
10788 target_buf_size
= 2048;
10789 target_buf
= xmalloc (target_buf_size
);