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);
216 static int remote_get_trace_status (struct trace_status *ts);
218 static int remote_upload_tracepoints (struct uploaded_tp **utpp);
220 static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp);
222 static void remote_query_supported (void);
224 static void remote_check_symbols (struct objfile *objfile);
226 void _initialize_remote (void);
229 static struct stop_reply *stop_reply_xmalloc (void);
230 static void stop_reply_xfree (struct stop_reply *);
231 static void do_stop_reply_xfree (void *arg);
232 static void remote_parse_stop_reply (char *buf, struct stop_reply *);
233 static void push_stop_reply (struct stop_reply *);
234 static void remote_get_pending_stop_replies (void);
235 static void discard_pending_stop_replies (int pid);
236 static int peek_stop_reply (ptid_t ptid);
238 static void remote_async_inferior_event_handler (gdb_client_data);
239 static void remote_async_get_pending_events_handler (gdb_client_data);
241 static void remote_terminal_ours (void);
243 static int remote_read_description_p (struct target_ops *target);
245 /* The non-stop remote protocol provisions for one pending stop reply.
246 This is where we keep it until it is acknowledged. */
248 static struct stop_reply *pending_stop_reply = NULL;
252 static struct cmd_list_element *remote_cmdlist;
254 /* For "set remote" and "show remote". */
256 static struct cmd_list_element *remote_set_cmdlist;
257 static struct cmd_list_element *remote_show_cmdlist;
259 /* Description of the remote protocol state for the currently
260 connected target. This is per-target state, and independent of the
261 selected architecture. */
265 /* A buffer to use for incoming packets, and its current size. The
266 buffer is grown dynamically for larger incoming packets.
267 Outgoing packets may also be constructed in this buffer.
268 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
269 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
274 /* If we negotiated packet size explicitly (and thus can bypass
275 heuristics for the largest packet size that will not overflow
276 a buffer in the stub), this will be set to that packet size.
277 Otherwise zero, meaning to use the guessed size. */
278 long explicit_packet_size;
280 /* remote_wait is normally called when the target is running and
281 waits for a stop reply packet. But sometimes we need to call it
282 when the target is already stopped. We can send a "?" packet
283 and have remote_wait read the response. Or, if we already have
284 the response, we can stash it in BUF and tell remote_wait to
285 skip calling getpkt. This flag is set when BUF contains a
286 stop reply packet and the target is not waiting. */
287 int cached_wait_status;
289 /* True, if in no ack mode. That is, neither GDB nor the stub will
290 expect acks from each other. The connection is assumed to be
294 /* True if we're connected in extended remote mode. */
297 /* True if the stub reported support for multi-process
299 int multi_process_aware;
301 /* True if we resumed the target and we're waiting for the target to
302 stop. In the mean time, we can't start another command/query.
303 The remote server wouldn't be ready to process it, so we'd
304 timeout waiting for a reply that would never come and eventually
305 we'd close the connection. This can happen in asynchronous mode
306 because we allow GDB commands while the target is running. */
307 int waiting_for_stop_reply;
309 /* True if the stub reports support for non-stop mode. */
312 /* True if the stub reports support for vCont;t. */
315 /* True if the stub reports support for conditional tracepoints. */
316 int cond_tracepoints;
318 /* True if the stub reports support for fast tracepoints. */
319 int fast_tracepoints;
321 /* True if the stub can continue running a trace while GDB is
323 int disconnected_tracing;
325 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
326 responded to that. */
330 /* Private data that we'll store in (struct thread_info)->private. */
331 struct private_thread_info
338 free_private_thread_info (struct private_thread_info *info)
344 /* Returns true if the multi-process extensions are in effect. */
346 remote_multi_process_p (struct remote_state *rs)
348 return rs->extended && rs->multi_process_aware;
351 /* This data could be associated with a target, but we do not always
352 have access to the current target when we need it, so for now it is
353 static. This will be fine for as long as only one target is in use
355 static struct remote_state remote_state;
357 static struct remote_state *
358 get_remote_state_raw (void)
360 return &remote_state;
363 /* Description of the remote protocol for a given architecture. */
367 long offset; /* Offset into G packet. */
368 long regnum; /* GDB's internal register number. */
369 LONGEST pnum; /* Remote protocol register number. */
370 int in_g_packet; /* Always part of G packet. */
371 /* long size in bytes; == register_size (target_gdbarch, regnum);
373 /* char *name; == gdbarch_register_name (target_gdbarch, regnum);
377 struct remote_arch_state
379 /* Description of the remote protocol registers. */
380 long sizeof_g_packet;
382 /* Description of the remote protocol registers indexed by REGNUM
383 (making an array gdbarch_num_regs in size). */
384 struct packet_reg *regs;
386 /* This is the size (in chars) of the first response to the ``g''
387 packet. It is used as a heuristic when determining the maximum
388 size of memory-read and memory-write packets. A target will
389 typically only reserve a buffer large enough to hold the ``g''
390 packet. The size does not include packet overhead (headers and
392 long actual_register_packet_size;
394 /* This is the maximum size (in chars) of a non read/write packet.
395 It is also used as a cap on the size of read/write packets. */
396 long remote_packet_size;
399 long sizeof_pkt = 2000;
401 /* Utility: generate error from an incoming stub packet. */
403 trace_error (char *buf)
406 return; /* not an error msg */
409 case '1': /* malformed packet error */
410 if (*++buf == '0') /* general case: */
411 error (_("remote.c: error in outgoing packet."));
413 error (_("remote.c: error in outgoing packet at field #%ld."),
414 strtol (buf, NULL, 16));
416 error (_("trace API error 0x%s."), ++buf);
418 error (_("Target returns error code '%s'."), buf);
422 /* Utility: wait for reply from stub, while accepting "O" packets. */
424 remote_get_noisy_reply (char **buf_p,
427 do /* Loop on reply from remote stub. */
430 QUIT; /* allow user to bail out with ^C */
431 getpkt (buf_p, sizeof_buf, 0);
435 else if (buf[0] == 'O' && buf[1] != 'K')
436 remote_console_output (buf + 1); /* 'O' message from stub */
438 return buf; /* here's the actual reply */
443 /* Handle for retreving the remote protocol data from gdbarch. */
444 static struct gdbarch_data *remote_gdbarch_data_handle;
446 static struct remote_arch_state *
447 get_remote_arch_state (void)
449 return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle);
452 /* Fetch the global remote target state. */
454 static struct remote_state *
455 get_remote_state (void)
457 /* Make sure that the remote architecture state has been
458 initialized, because doing so might reallocate rs->buf. Any
459 function which calls getpkt also needs to be mindful of changes
460 to rs->buf, but this call limits the number of places which run
462 get_remote_arch_state ();
464 return get_remote_state_raw ();
468 compare_pnums (const void *lhs_, const void *rhs_)
470 const struct packet_reg * const *lhs = lhs_;
471 const struct packet_reg * const *rhs = rhs_;
473 if ((*lhs)->pnum < (*rhs)->pnum)
475 else if ((*lhs)->pnum == (*rhs)->pnum)
482 init_remote_state (struct gdbarch *gdbarch)
484 int regnum, num_remote_regs, offset;
485 struct remote_state *rs = get_remote_state_raw ();
486 struct remote_arch_state *rsa;
487 struct packet_reg **remote_regs;
489 rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state);
491 /* Use the architecture to build a regnum<->pnum table, which will be
492 1:1 unless a feature set specifies otherwise. */
493 rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch,
494 gdbarch_num_regs (gdbarch),
496 for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++)
498 struct packet_reg *r = &rsa->regs[regnum];
500 if (register_size (gdbarch, regnum) == 0)
501 /* Do not try to fetch zero-sized (placeholder) registers. */
504 r->pnum = gdbarch_remote_register_number (gdbarch, regnum);
509 /* Define the g/G packet format as the contents of each register
510 with a remote protocol number, in order of ascending protocol
513 remote_regs = alloca (gdbarch_num_regs (gdbarch)
514 * sizeof (struct packet_reg *));
515 for (num_remote_regs = 0, regnum = 0;
516 regnum < gdbarch_num_regs (gdbarch);
518 if (rsa->regs[regnum].pnum != -1)
519 remote_regs[num_remote_regs++] = &rsa->regs[regnum];
521 qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *),
524 for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++)
526 remote_regs[regnum]->in_g_packet = 1;
527 remote_regs[regnum]->offset = offset;
528 offset += register_size (gdbarch, remote_regs[regnum]->regnum);
531 /* Record the maximum possible size of the g packet - it may turn out
533 rsa->sizeof_g_packet = offset;
535 /* Default maximum number of characters in a packet body. Many
536 remote stubs have a hardwired buffer size of 400 bytes
537 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
538 as the maximum packet-size to ensure that the packet and an extra
539 NUL character can always fit in the buffer. This stops GDB
540 trashing stubs that try to squeeze an extra NUL into what is
541 already a full buffer (As of 1999-12-04 that was most stubs). */
542 rsa->remote_packet_size = 400 - 1;
544 /* This one is filled in when a ``g'' packet is received. */
545 rsa->actual_register_packet_size = 0;
547 /* Should rsa->sizeof_g_packet needs more space than the
548 default, adjust the size accordingly. Remember that each byte is
549 encoded as two characters. 32 is the overhead for the packet
550 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
551 (``$NN:G...#NN'') is a better guess, the below has been padded a
553 if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2))
554 rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32);
556 /* Make sure that the packet buffer is plenty big enough for
557 this architecture. */
558 if (rs->buf_size < rsa->remote_packet_size)
560 rs->buf_size = 2 * rsa->remote_packet_size;
561 rs->buf = xrealloc (rs->buf, rs->buf_size);
567 /* Return the current allowed size of a remote packet. This is
568 inferred from the current architecture, and should be used to
569 limit the length of outgoing packets. */
571 get_remote_packet_size (void)
573 struct remote_state *rs = get_remote_state ();
574 struct remote_arch_state *rsa = get_remote_arch_state ();
576 if (rs->explicit_packet_size)
577 return rs->explicit_packet_size;
579 return rsa->remote_packet_size;
582 static struct packet_reg *
583 packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum)
585 if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch))
589 struct packet_reg *r = &rsa->regs[regnum];
590 gdb_assert (r->regnum == regnum);
595 static struct packet_reg *
596 packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum)
599 for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++)
601 struct packet_reg *r = &rsa->regs[i];
608 /* FIXME: graces/2002-08-08: These variables should eventually be
609 bound to an instance of the target object (as in gdbarch-tdep()),
610 when such a thing exists. */
612 /* This is set to the data address of the access causing the target
613 to stop for a watchpoint. */
614 static CORE_ADDR remote_watch_data_address;
616 /* This is non-zero if target stopped for a watchpoint. */
617 static int remote_stopped_by_watchpoint_p;
619 static struct target_ops remote_ops;
621 static struct target_ops extended_remote_ops;
623 static int remote_async_mask_value = 1;
625 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
626 ``forever'' still use the normal timeout mechanism. This is
627 currently used by the ASYNC code to guarentee that target reads
628 during the initial connect always time-out. Once getpkt has been
629 modified to return a timeout indication and, in turn
630 remote_wait()/wait_for_inferior() have gained a timeout parameter
632 static int wait_forever_enabled_p = 1;
634 /* Allow the user to specify what sequence to send to the remote
635 when he requests a program interruption: Although ^C is usually
636 what remote systems expect (this is the default, here), it is
637 sometimes preferable to send a break. On other systems such
638 as the Linux kernel, a break followed by g, which is Magic SysRq g
639 is required in order to interrupt the execution. */
640 const char interrupt_sequence_control_c[] = "Ctrl-C";
641 const char interrupt_sequence_break[] = "BREAK";
642 const char interrupt_sequence_break_g[] = "BREAK-g";
643 static const char *interrupt_sequence_modes[] =
645 interrupt_sequence_control_c,
646 interrupt_sequence_break,
647 interrupt_sequence_break_g,
650 static const char *interrupt_sequence_mode = interrupt_sequence_control_c;
653 show_interrupt_sequence (struct ui_file *file, int from_tty,
654 struct cmd_list_element *c,
657 if (interrupt_sequence_mode == interrupt_sequence_control_c)
658 fprintf_filtered (file,
659 _("Send the ASCII ETX character (Ctrl-c) "
660 "to the remote target to interrupt the "
661 "execution of the program.\n"));
662 else if (interrupt_sequence_mode == interrupt_sequence_break)
663 fprintf_filtered (file,
664 _("send a break signal to the remote target "
665 "to interrupt the execution of the program.\n"));
666 else if (interrupt_sequence_mode == interrupt_sequence_break_g)
667 fprintf_filtered (file,
668 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
669 "the remote target to interrupt the execution "
670 "of Linux kernel.\n"));
672 internal_error (__FILE__, __LINE__,
673 _("Invalid value for interrupt_sequence_mode: %s."),
674 interrupt_sequence_mode);
677 /* This boolean variable specifies whether interrupt_sequence is sent
678 to the remote target when gdb connects to it.
679 This is mostly needed when you debug the Linux kernel: The Linux kernel
680 expects BREAK g which is Magic SysRq g for connecting gdb. */
681 static int interrupt_on_connect = 0;
683 /* This variable is used to implement the "set/show remotebreak" commands.
684 Since these commands are now deprecated in favor of "set/show remote
685 interrupt-sequence", it no longer has any effect on the code. */
686 static int remote_break;
689 set_remotebreak (char *args, int from_tty, struct cmd_list_element *c)
692 interrupt_sequence_mode = interrupt_sequence_break;
694 interrupt_sequence_mode = interrupt_sequence_control_c;
698 show_remotebreak (struct ui_file *file, int from_tty,
699 struct cmd_list_element *c,
704 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
705 remote_open knows that we don't have a file open when the program
707 static struct serial *remote_desc = NULL;
709 /* This variable sets the number of bits in an address that are to be
710 sent in a memory ("M" or "m") packet. Normally, after stripping
711 leading zeros, the entire address would be sent. This variable
712 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
713 initial implementation of remote.c restricted the address sent in
714 memory packets to ``host::sizeof long'' bytes - (typically 32
715 bits). Consequently, for 64 bit targets, the upper 32 bits of an
716 address was never sent. Since fixing this bug may cause a break in
717 some remote targets this variable is principly provided to
718 facilitate backward compatibility. */
720 static int remote_address_size;
722 /* Temporary to track who currently owns the terminal. See
723 remote_terminal_* for more details. */
725 static int remote_async_terminal_ours_p;
727 /* The executable file to use for "run" on the remote side. */
729 static char *remote_exec_file = "";
732 /* User configurable variables for the number of characters in a
733 memory read/write packet. MIN (rsa->remote_packet_size,
734 rsa->sizeof_g_packet) is the default. Some targets need smaller
735 values (fifo overruns, et.al.) and some users need larger values
736 (speed up transfers). The variables ``preferred_*'' (the user
737 request), ``current_*'' (what was actually set) and ``forced_*''
738 (Positive - a soft limit, negative - a hard limit). */
740 struct memory_packet_config
747 /* Compute the current size of a read/write packet. Since this makes
748 use of ``actual_register_packet_size'' the computation is dynamic. */
751 get_memory_packet_size (struct memory_packet_config *config)
753 struct remote_state *rs = get_remote_state ();
754 struct remote_arch_state *rsa = get_remote_arch_state ();
756 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
757 law?) that some hosts don't cope very well with large alloca()
758 calls. Eventually the alloca() code will be replaced by calls to
759 xmalloc() and make_cleanups() allowing this restriction to either
760 be lifted or removed. */
761 #ifndef MAX_REMOTE_PACKET_SIZE
762 #define MAX_REMOTE_PACKET_SIZE 16384
764 /* NOTE: 20 ensures we can write at least one byte. */
765 #ifndef MIN_REMOTE_PACKET_SIZE
766 #define MIN_REMOTE_PACKET_SIZE 20
771 if (config->size <= 0)
772 what_they_get = MAX_REMOTE_PACKET_SIZE;
774 what_they_get = config->size;
778 what_they_get = get_remote_packet_size ();
779 /* Limit the packet to the size specified by the user. */
781 && what_they_get > config->size)
782 what_they_get = config->size;
784 /* Limit it to the size of the targets ``g'' response unless we have
785 permission from the stub to use a larger packet size. */
786 if (rs->explicit_packet_size == 0
787 && rsa->actual_register_packet_size > 0
788 && what_they_get > rsa->actual_register_packet_size)
789 what_they_get = rsa->actual_register_packet_size;
791 if (what_they_get > MAX_REMOTE_PACKET_SIZE)
792 what_they_get = MAX_REMOTE_PACKET_SIZE;
793 if (what_they_get < MIN_REMOTE_PACKET_SIZE)
794 what_they_get = MIN_REMOTE_PACKET_SIZE;
796 /* Make sure there is room in the global buffer for this packet
797 (including its trailing NUL byte). */
798 if (rs->buf_size < what_they_get + 1)
800 rs->buf_size = 2 * what_they_get;
801 rs->buf = xrealloc (rs->buf, 2 * what_they_get);
804 return what_they_get;
807 /* Update the size of a read/write packet. If they user wants
808 something really big then do a sanity check. */
811 set_memory_packet_size (char *args, struct memory_packet_config *config)
813 int fixed_p = config->fixed_p;
814 long size = config->size;
816 error (_("Argument required (integer, `fixed' or `limited')."));
817 else if (strcmp (args, "hard") == 0
818 || strcmp (args, "fixed") == 0)
820 else if (strcmp (args, "soft") == 0
821 || strcmp (args, "limit") == 0)
826 size = strtoul (args, &end, 0);
828 error (_("Invalid %s (bad syntax)."), config->name);
830 /* Instead of explicitly capping the size of a packet to
831 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
832 instead allowed to set the size to something arbitrarily
834 if (size > MAX_REMOTE_PACKET_SIZE)
835 error (_("Invalid %s (too large)."), config->name);
839 if (fixed_p && !config->fixed_p)
841 if (! query (_("The target may not be able to correctly handle a %s\n"
842 "of %ld bytes. Change the packet size? "),
844 error (_("Packet size not changed."));
846 /* Update the config. */
847 config->fixed_p = fixed_p;
852 show_memory_packet_size (struct memory_packet_config *config)
854 printf_filtered (_("The %s is %ld. "), config->name, config->size);
856 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
857 get_memory_packet_size (config));
859 printf_filtered (_("Packets are limited to %ld bytes.\n"),
860 get_memory_packet_size (config));
863 static struct memory_packet_config memory_write_packet_config =
865 "memory-write-packet-size",
869 set_memory_write_packet_size (char *args, int from_tty)
871 set_memory_packet_size (args, &memory_write_packet_config);
875 show_memory_write_packet_size (char *args, int from_tty)
877 show_memory_packet_size (&memory_write_packet_config);
881 get_memory_write_packet_size (void)
883 return get_memory_packet_size (&memory_write_packet_config);
886 static struct memory_packet_config memory_read_packet_config =
888 "memory-read-packet-size",
892 set_memory_read_packet_size (char *args, int from_tty)
894 set_memory_packet_size (args, &memory_read_packet_config);
898 show_memory_read_packet_size (char *args, int from_tty)
900 show_memory_packet_size (&memory_read_packet_config);
904 get_memory_read_packet_size (void)
906 long size = get_memory_packet_size (&memory_read_packet_config);
907 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
908 extra buffer size argument before the memory read size can be
909 increased beyond this. */
910 if (size > get_remote_packet_size ())
911 size = get_remote_packet_size ();
916 /* Generic configuration support for packets the stub optionally
917 supports. Allows the user to specify the use of the packet as well
918 as allowing GDB to auto-detect support in the remote stub. */
922 PACKET_SUPPORT_UNKNOWN = 0,
931 enum auto_boolean detect;
932 enum packet_support support;
935 /* Analyze a packet's return value and update the packet config
946 update_packet_config (struct packet_config *config)
948 switch (config->detect)
950 case AUTO_BOOLEAN_TRUE:
951 config->support = PACKET_ENABLE;
953 case AUTO_BOOLEAN_FALSE:
954 config->support = PACKET_DISABLE;
956 case AUTO_BOOLEAN_AUTO:
957 config->support = PACKET_SUPPORT_UNKNOWN;
963 show_packet_config_cmd (struct packet_config *config)
965 char *support = "internal-error";
966 switch (config->support)
972 support = "disabled";
974 case PACKET_SUPPORT_UNKNOWN:
978 switch (config->detect)
980 case AUTO_BOOLEAN_AUTO:
981 printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"),
982 config->name, support);
984 case AUTO_BOOLEAN_TRUE:
985 case AUTO_BOOLEAN_FALSE:
986 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
987 config->name, support);
993 add_packet_config_cmd (struct packet_config *config, const char *name,
994 const char *title, int legacy)
1000 config->name = name;
1001 config->title = title;
1002 config->detect = AUTO_BOOLEAN_AUTO;
1003 config->support = PACKET_SUPPORT_UNKNOWN;
1004 set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1006 show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
1008 /* set/show TITLE-packet {auto,on,off} */
1009 cmd_name = xstrprintf ("%s-packet", title);
1010 add_setshow_auto_boolean_cmd (cmd_name, class_obscure,
1011 &config->detect, set_doc, show_doc, NULL, /* help_doc */
1012 set_remote_protocol_packet_cmd,
1013 show_remote_protocol_packet_cmd,
1014 &remote_set_cmdlist, &remote_show_cmdlist);
1015 /* The command code copies the documentation strings. */
1018 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1022 legacy_name = xstrprintf ("%s-packet", name);
1023 add_alias_cmd (legacy_name, cmd_name, class_obscure, 0,
1024 &remote_set_cmdlist);
1025 add_alias_cmd (legacy_name, cmd_name, class_obscure, 0,
1026 &remote_show_cmdlist);
1030 static enum packet_result
1031 packet_check_result (const char *buf)
1035 /* The stub recognized the packet request. Check that the
1036 operation succeeded. */
1038 && isxdigit (buf[1]) && isxdigit (buf[2])
1040 /* "Enn" - definitly an error. */
1041 return PACKET_ERROR;
1043 /* Always treat "E." as an error. This will be used for
1044 more verbose error messages, such as E.memtypes. */
1045 if (buf[0] == 'E' && buf[1] == '.')
1046 return PACKET_ERROR;
1048 /* The packet may or may not be OK. Just assume it is. */
1052 /* The stub does not support the packet. */
1053 return PACKET_UNKNOWN;
1056 static enum packet_result
1057 packet_ok (const char *buf, struct packet_config *config)
1059 enum packet_result result;
1061 result = packet_check_result (buf);
1066 /* The stub recognized the packet request. */
1067 switch (config->support)
1069 case PACKET_SUPPORT_UNKNOWN:
1071 fprintf_unfiltered (gdb_stdlog,
1072 "Packet %s (%s) is supported\n",
1073 config->name, config->title);
1074 config->support = PACKET_ENABLE;
1076 case PACKET_DISABLE:
1077 internal_error (__FILE__, __LINE__,
1078 _("packet_ok: attempt to use a disabled packet"));
1084 case PACKET_UNKNOWN:
1085 /* The stub does not support the packet. */
1086 switch (config->support)
1089 if (config->detect == AUTO_BOOLEAN_AUTO)
1090 /* If the stub previously indicated that the packet was
1091 supported then there is a protocol error.. */
1092 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1093 config->name, config->title);
1095 /* The user set it wrong. */
1096 error (_("Enabled packet %s (%s) not recognized by stub"),
1097 config->name, config->title);
1099 case PACKET_SUPPORT_UNKNOWN:
1101 fprintf_unfiltered (gdb_stdlog,
1102 "Packet %s (%s) is NOT supported\n",
1103 config->name, config->title);
1104 config->support = PACKET_DISABLE;
1106 case PACKET_DISABLE:
1128 PACKET_vFile_pwrite,
1130 PACKET_vFile_unlink,
1132 PACKET_qXfer_features,
1133 PACKET_qXfer_libraries,
1134 PACKET_qXfer_memory_map,
1135 PACKET_qXfer_spu_read,
1136 PACKET_qXfer_spu_write,
1137 PACKET_qXfer_osdata,
1138 PACKET_qXfer_threads,
1142 PACKET_QPassSignals,
1143 PACKET_qSearch_memory,
1146 PACKET_QStartNoAckMode,
1148 PACKET_qXfer_siginfo_read,
1149 PACKET_qXfer_siginfo_write,
1151 PACKET_ConditionalTracepoints,
1152 PACKET_FastTracepoints,
1155 PACKET_TracepointSource,
1159 static struct packet_config remote_protocol_packets[PACKET_MAX];
1162 set_remote_protocol_packet_cmd (char *args, int from_tty,
1163 struct cmd_list_element *c)
1165 struct packet_config *packet;
1167 for (packet = remote_protocol_packets;
1168 packet < &remote_protocol_packets[PACKET_MAX];
1171 if (&packet->detect == c->var)
1173 update_packet_config (packet);
1177 internal_error (__FILE__, __LINE__, "Could not find config for %s",
1182 show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty,
1183 struct cmd_list_element *c,
1186 struct packet_config *packet;
1188 for (packet = remote_protocol_packets;
1189 packet < &remote_protocol_packets[PACKET_MAX];
1192 if (&packet->detect == c->var)
1194 show_packet_config_cmd (packet);
1198 internal_error (__FILE__, __LINE__, "Could not find config for %s",
1202 /* Should we try one of the 'Z' requests? */
1206 Z_PACKET_SOFTWARE_BP,
1207 Z_PACKET_HARDWARE_BP,
1214 /* For compatibility with older distributions. Provide a ``set remote
1215 Z-packet ...'' command that updates all the Z packet types. */
1217 static enum auto_boolean remote_Z_packet_detect;
1220 set_remote_protocol_Z_packet_cmd (char *args, int from_tty,
1221 struct cmd_list_element *c)
1224 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
1226 remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect;
1227 update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]);
1232 show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty,
1233 struct cmd_list_element *c,
1237 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
1239 show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]);
1243 /* Should we try the 'ThreadInfo' query packet?
1245 This variable (NOT available to the user: auto-detect only!)
1246 determines whether GDB will use the new, simpler "ThreadInfo"
1247 query or the older, more complex syntax for thread queries.
1248 This is an auto-detect variable (set to true at each connect,
1249 and set to false when the target fails to recognize it). */
1251 static int use_threadinfo_query;
1252 static int use_threadextra_query;
1254 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1255 static struct async_signal_handler *sigint_remote_twice_token;
1256 static struct async_signal_handler *sigint_remote_token;
1259 /* Asynchronous signal handle registered as event loop source for
1260 when we have pending events ready to be passed to the core. */
1262 static struct async_event_handler *remote_async_inferior_event_token;
1264 /* Asynchronous signal handle registered as event loop source for when
1265 the remote sent us a %Stop notification. The registered callback
1266 will do a vStopped sequence to pull the rest of the events out of
1267 the remote side into our event queue. */
1269 static struct async_event_handler *remote_async_get_pending_events_token;
1272 static ptid_t magic_null_ptid;
1273 static ptid_t not_sent_ptid;
1274 static ptid_t any_thread_ptid;
1276 /* These are the threads which we last sent to the remote system. The
1277 TID member will be -1 for all or -2 for not sent yet. */
1279 static ptid_t general_thread;
1280 static ptid_t continue_thread;
1282 /* Find out if the stub attached to PID (and hence GDB should offer to
1283 detach instead of killing it when bailing out). */
1286 remote_query_attached (int pid)
1288 struct remote_state *rs = get_remote_state ();
1290 if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE)
1293 if (remote_multi_process_p (rs))
1294 sprintf (rs->buf, "qAttached:%x", pid);
1296 sprintf (rs->buf, "qAttached");
1299 getpkt (&rs->buf, &rs->buf_size, 0);
1301 switch (packet_ok (rs->buf,
1302 &remote_protocol_packets[PACKET_qAttached]))
1305 if (strcmp (rs->buf, "1") == 0)
1309 warning (_("Remote failure reply: %s"), rs->buf);
1311 case PACKET_UNKNOWN:
1318 /* Add PID to GDB's inferior table. Since we can be connected to a
1319 remote system before before knowing about any inferior, mark the
1320 target with execution when we find the first inferior. If ATTACHED
1321 is 1, then we had just attached to this inferior. If it is 0, then
1322 we just created this inferior. If it is -1, then try querying the
1323 remote stub to find out if it had attached to the inferior or
1326 static struct inferior *
1327 remote_add_inferior (int pid, int attached)
1329 struct inferior *inf;
1331 /* Check whether this process we're learning about is to be
1332 considered attached, or if is to be considered to have been
1333 spawned by the stub. */
1335 attached = remote_query_attached (pid);
1337 if (gdbarch_has_global_solist (target_gdbarch))
1339 /* If the target shares code across all inferiors, then every
1340 attach adds a new inferior. */
1341 inf = add_inferior (pid);
1343 /* ... and every inferior is bound to the same program space.
1344 However, each inferior may still have its own address
1346 inf->aspace = maybe_new_address_space ();
1347 inf->pspace = current_program_space;
1351 /* In the traditional debugging scenario, there's a 1-1 match
1352 between program/address spaces. We simply bind the inferior
1353 to the program space's address space. */
1354 inf = current_inferior ();
1355 inferior_appeared (inf, pid);
1358 inf->attach_flag = attached;
1363 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1364 according to RUNNING. */
1367 remote_add_thread (ptid_t ptid, int running)
1371 set_executing (ptid, running);
1372 set_running (ptid, running);
1375 /* Come here when we learn about a thread id from the remote target.
1376 It may be the first time we hear about such thread, so take the
1377 opportunity to add it to GDB's thread list. In case this is the
1378 first time we're noticing its corresponding inferior, add it to
1379 GDB's inferior list as well. */
1382 remote_notice_new_inferior (ptid_t currthread, int running)
1384 /* If this is a new thread, add it to GDB's thread list.
1385 If we leave it up to WFI to do this, bad things will happen. */
1387 if (in_thread_list (currthread) && is_exited (currthread))
1389 /* We're seeing an event on a thread id we knew had exited.
1390 This has to be a new thread reusing the old id. Add it. */
1391 remote_add_thread (currthread, running);
1395 if (!in_thread_list (currthread))
1397 struct inferior *inf = NULL;
1398 int pid = ptid_get_pid (currthread);
1400 if (ptid_is_pid (inferior_ptid)
1401 && pid == ptid_get_pid (inferior_ptid))
1403 /* inferior_ptid has no thread member yet. This can happen
1404 with the vAttach -> remote_wait,"TAAthread:" path if the
1405 stub doesn't support qC. This is the first stop reported
1406 after an attach, so this is the main thread. Update the
1407 ptid in the thread list. */
1408 if (in_thread_list (pid_to_ptid (pid)))
1409 thread_change_ptid (inferior_ptid, currthread);
1412 remote_add_thread (currthread, running);
1413 inferior_ptid = currthread;
1418 if (ptid_equal (magic_null_ptid, inferior_ptid))
1420 /* inferior_ptid is not set yet. This can happen with the
1421 vRun -> remote_wait,"TAAthread:" path if the stub
1422 doesn't support qC. This is the first stop reported
1423 after an attach, so this is the main thread. Update the
1424 ptid in the thread list. */
1425 thread_change_ptid (inferior_ptid, currthread);
1429 /* When connecting to a target remote, or to a target
1430 extended-remote which already was debugging an inferior, we
1431 may not know about it yet. Add it before adding its child
1432 thread, so notifications are emitted in a sensible order. */
1433 if (!in_inferior_list (ptid_get_pid (currthread)))
1434 inf = remote_add_inferior (ptid_get_pid (currthread), -1);
1436 /* This is really a new thread. Add it. */
1437 remote_add_thread (currthread, running);
1439 /* If we found a new inferior, let the common code do whatever
1440 it needs to with it (e.g., read shared libraries, insert
1443 notice_new_inferior (currthread, running, 0);
1447 /* Return the private thread data, creating it if necessary. */
1449 struct private_thread_info *
1450 demand_private_info (ptid_t ptid)
1452 struct thread_info *info = find_thread_ptid (ptid);
1458 info->private = xmalloc (sizeof (*(info->private)));
1459 info->private_dtor = free_private_thread_info;
1460 info->private->core = -1;
1461 info->private->extra = 0;
1464 return info->private;
1467 /* Call this function as a result of
1468 1) A halt indication (T packet) containing a thread id
1469 2) A direct query of currthread
1470 3) Successful execution of set thread
1474 record_currthread (ptid_t currthread)
1476 general_thread = currthread;
1479 static char *last_pass_packet;
1481 /* If 'QPassSignals' is supported, tell the remote stub what signals
1482 it can simply pass through to the inferior without reporting. */
1485 remote_pass_signals (void)
1487 if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE)
1489 char *pass_packet, *p;
1490 int numsigs = (int) TARGET_SIGNAL_LAST;
1493 gdb_assert (numsigs < 256);
1494 for (i = 0; i < numsigs; i++)
1496 if (signal_stop_state (i) == 0
1497 && signal_print_state (i) == 0
1498 && signal_pass_state (i) == 1)
1501 pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1);
1502 strcpy (pass_packet, "QPassSignals:");
1503 p = pass_packet + strlen (pass_packet);
1504 for (i = 0; i < numsigs; i++)
1506 if (signal_stop_state (i) == 0
1507 && signal_print_state (i) == 0
1508 && signal_pass_state (i) == 1)
1511 *p++ = tohex (i >> 4);
1512 *p++ = tohex (i & 15);
1521 if (!last_pass_packet || strcmp (last_pass_packet, pass_packet))
1523 struct remote_state *rs = get_remote_state ();
1524 char *buf = rs->buf;
1526 putpkt (pass_packet);
1527 getpkt (&rs->buf, &rs->buf_size, 0);
1528 packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]);
1529 if (last_pass_packet)
1530 xfree (last_pass_packet);
1531 last_pass_packet = pass_packet;
1534 xfree (pass_packet);
1539 remote_notice_signals (ptid_t ptid)
1541 /* Update the remote on signals to silently pass, if they've
1543 remote_pass_signals ();
1546 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1547 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1548 thread. If GEN is set, set the general thread, if not, then set
1549 the step/continue thread. */
1551 set_thread (struct ptid ptid, int gen)
1553 struct remote_state *rs = get_remote_state ();
1554 ptid_t state = gen ? general_thread : continue_thread;
1555 char *buf = rs->buf;
1556 char *endbuf = rs->buf + get_remote_packet_size ();
1558 if (ptid_equal (state, ptid))
1562 *buf++ = gen ? 'g' : 'c';
1563 if (ptid_equal (ptid, magic_null_ptid))
1564 xsnprintf (buf, endbuf - buf, "0");
1565 else if (ptid_equal (ptid, any_thread_ptid))
1566 xsnprintf (buf, endbuf - buf, "0");
1567 else if (ptid_equal (ptid, minus_one_ptid))
1568 xsnprintf (buf, endbuf - buf, "-1");
1570 write_ptid (buf, endbuf, ptid);
1572 getpkt (&rs->buf, &rs->buf_size, 0);
1574 general_thread = ptid;
1576 continue_thread = ptid;
1580 set_general_thread (struct ptid ptid)
1582 set_thread (ptid, 1);
1586 set_continue_thread (struct ptid ptid)
1588 set_thread (ptid, 0);
1591 /* Change the remote current process. Which thread within the process
1592 ends up selected isn't important, as long as it is the same process
1593 as what INFERIOR_PTID points to.
1595 This comes from that fact that there is no explicit notion of
1596 "selected process" in the protocol. The selected process for
1597 general operations is the process the selected general thread
1601 set_general_process (void)
1603 struct remote_state *rs = get_remote_state ();
1605 /* If the remote can't handle multiple processes, don't bother. */
1606 if (!remote_multi_process_p (rs))
1609 /* We only need to change the remote current thread if it's pointing
1610 at some other process. */
1611 if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid))
1612 set_general_thread (inferior_ptid);
1616 /* Return nonzero if the thread PTID is still alive on the remote
1620 remote_thread_alive (struct target_ops *ops, ptid_t ptid)
1622 struct remote_state *rs = get_remote_state ();
1625 if (ptid_equal (ptid, magic_null_ptid))
1626 /* The main thread is always alive. */
1629 if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0)
1630 /* The main thread is always alive. This can happen after a
1631 vAttach, if the remote side doesn't support
1636 endp = rs->buf + get_remote_packet_size ();
1639 write_ptid (p, endp, ptid);
1642 getpkt (&rs->buf, &rs->buf_size, 0);
1643 return (rs->buf[0] == 'O' && rs->buf[1] == 'K');
1646 /* About these extended threadlist and threadinfo packets. They are
1647 variable length packets but, the fields within them are often fixed
1648 length. They are redundent enough to send over UDP as is the
1649 remote protocol in general. There is a matching unit test module
1652 #define OPAQUETHREADBYTES 8
1654 /* a 64 bit opaque identifier */
1655 typedef unsigned char threadref[OPAQUETHREADBYTES];
1657 /* WARNING: This threadref data structure comes from the remote O.S.,
1658 libstub protocol encoding, and remote.c. it is not particularly
1661 /* Right now, the internal structure is int. We want it to be bigger.
1665 typedef int gdb_threadref; /* Internal GDB thread reference. */
1667 /* gdb_ext_thread_info is an internal GDB data structure which is
1668 equivalent to the reply of the remote threadinfo packet. */
1670 struct gdb_ext_thread_info
1672 threadref threadid; /* External form of thread reference. */
1673 int active; /* Has state interesting to GDB?
1675 char display[256]; /* Brief state display, name,
1676 blocked/suspended. */
1677 char shortname[32]; /* To be used to name threads. */
1678 char more_display[256]; /* Long info, statistics, queue depth,
1682 /* The volume of remote transfers can be limited by submitting
1683 a mask containing bits specifying the desired information.
1684 Use a union of these values as the 'selection' parameter to
1685 get_thread_info. FIXME: Make these TAG names more thread specific.
1688 #define TAG_THREADID 1
1689 #define TAG_EXISTS 2
1690 #define TAG_DISPLAY 4
1691 #define TAG_THREADNAME 8
1692 #define TAG_MOREDISPLAY 16
1694 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1696 char *unpack_varlen_hex (char *buff, ULONGEST *result);
1698 static char *unpack_nibble (char *buf, int *val);
1700 static char *pack_nibble (char *buf, int nibble);
1702 static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte);
1704 static char *unpack_byte (char *buf, int *value);
1706 static char *pack_int (char *buf, int value);
1708 static char *unpack_int (char *buf, int *value);
1710 static char *unpack_string (char *src, char *dest, int length);
1712 static char *pack_threadid (char *pkt, threadref *id);
1714 static char *unpack_threadid (char *inbuf, threadref *id);
1716 void int_to_threadref (threadref *id, int value);
1718 static int threadref_to_int (threadref *ref);
1720 static void copy_threadref (threadref *dest, threadref *src);
1722 static int threadmatch (threadref *dest, threadref *src);
1724 static char *pack_threadinfo_request (char *pkt, int mode,
1727 static int remote_unpack_thread_info_response (char *pkt,
1728 threadref *expectedref,
1729 struct gdb_ext_thread_info
1733 static int remote_get_threadinfo (threadref *threadid,
1734 int fieldset, /*TAG mask */
1735 struct gdb_ext_thread_info *info);
1737 static char *pack_threadlist_request (char *pkt, int startflag,
1739 threadref *nextthread);
1741 static int parse_threadlist_response (char *pkt,
1743 threadref *original_echo,
1744 threadref *resultlist,
1747 static int remote_get_threadlist (int startflag,
1748 threadref *nextthread,
1752 threadref *threadlist);
1754 typedef int (*rmt_thread_action) (threadref *ref, void *context);
1756 static int remote_threadlist_iterator (rmt_thread_action stepfunction,
1757 void *context, int looplimit);
1759 static int remote_newthread_step (threadref *ref, void *context);
1762 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1763 buffer we're allowed to write to. Returns
1764 BUF+CHARACTERS_WRITTEN. */
1767 write_ptid (char *buf, const char *endbuf, ptid_t ptid)
1770 struct remote_state *rs = get_remote_state ();
1772 if (remote_multi_process_p (rs))
1774 pid = ptid_get_pid (ptid);
1776 buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid);
1778 buf += xsnprintf (buf, endbuf - buf, "p%x.", pid);
1780 tid = ptid_get_tid (ptid);
1782 buf += xsnprintf (buf, endbuf - buf, "-%x", -tid);
1784 buf += xsnprintf (buf, endbuf - buf, "%x", tid);
1789 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1790 passed the last parsed char. Returns null_ptid on error. */
1793 read_ptid (char *buf, char **obuf)
1797 ULONGEST pid = 0, tid = 0;
1801 /* Multi-process ptid. */
1802 pp = unpack_varlen_hex (p + 1, &pid);
1804 error (_("invalid remote ptid: %s\n"), p);
1807 pp = unpack_varlen_hex (p + 1, &tid);
1810 return ptid_build (pid, 0, tid);
1813 /* No multi-process. Just a tid. */
1814 pp = unpack_varlen_hex (p, &tid);
1816 /* Since the stub is not sending a process id, then default to
1817 what's in inferior_ptid, unless it's null at this point. If so,
1818 then since there's no way to know the pid of the reported
1819 threads, use the magic number. */
1820 if (ptid_equal (inferior_ptid, null_ptid))
1821 pid = ptid_get_pid (magic_null_ptid);
1823 pid = ptid_get_pid (inferior_ptid);
1827 return ptid_build (pid, 0, tid);
1830 /* Encode 64 bits in 16 chars of hex. */
1832 static const char hexchars[] = "0123456789abcdef";
1835 ishex (int ch, int *val)
1837 if ((ch >= 'a') && (ch <= 'f'))
1839 *val = ch - 'a' + 10;
1842 if ((ch >= 'A') && (ch <= 'F'))
1844 *val = ch - 'A' + 10;
1847 if ((ch >= '0') && (ch <= '9'))
1858 if (ch >= 'a' && ch <= 'f')
1859 return ch - 'a' + 10;
1860 if (ch >= '0' && ch <= '9')
1862 if (ch >= 'A' && ch <= 'F')
1863 return ch - 'A' + 10;
1868 stub_unpack_int (char *buff, int fieldlength)
1875 nibble = stubhex (*buff++);
1879 retval = retval << 4;
1885 unpack_varlen_hex (char *buff, /* packet to parse */
1889 ULONGEST retval = 0;
1891 while (ishex (*buff, &nibble))
1894 retval = retval << 4;
1895 retval |= nibble & 0x0f;
1902 unpack_nibble (char *buf, int *val)
1904 *val = fromhex (*buf++);
1909 pack_nibble (char *buf, int nibble)
1911 *buf++ = hexchars[(nibble & 0x0f)];
1916 pack_hex_byte (char *pkt, int byte)
1918 *pkt++ = hexchars[(byte >> 4) & 0xf];
1919 *pkt++ = hexchars[(byte & 0xf)];
1924 unpack_byte (char *buf, int *value)
1926 *value = stub_unpack_int (buf, 2);
1931 pack_int (char *buf, int value)
1933 buf = pack_hex_byte (buf, (value >> 24) & 0xff);
1934 buf = pack_hex_byte (buf, (value >> 16) & 0xff);
1935 buf = pack_hex_byte (buf, (value >> 8) & 0x0ff);
1936 buf = pack_hex_byte (buf, (value & 0xff));
1941 unpack_int (char *buf, int *value)
1943 *value = stub_unpack_int (buf, 8);
1947 #if 0 /* Currently unused, uncomment when needed. */
1948 static char *pack_string (char *pkt, char *string);
1951 pack_string (char *pkt, char *string)
1956 len = strlen (string);
1958 len = 200; /* Bigger than most GDB packets, junk??? */
1959 pkt = pack_hex_byte (pkt, len);
1963 if ((ch == '\0') || (ch == '#'))
1964 ch = '*'; /* Protect encapsulation. */
1969 #endif /* 0 (unused) */
1972 unpack_string (char *src, char *dest, int length)
1981 pack_threadid (char *pkt, threadref *id)
1984 unsigned char *altid;
1986 altid = (unsigned char *) id;
1987 limit = pkt + BUF_THREAD_ID_SIZE;
1989 pkt = pack_hex_byte (pkt, *altid++);
1995 unpack_threadid (char *inbuf, threadref *id)
1998 char *limit = inbuf + BUF_THREAD_ID_SIZE;
2001 altref = (char *) id;
2003 while (inbuf < limit)
2005 x = stubhex (*inbuf++);
2006 y = stubhex (*inbuf++);
2007 *altref++ = (x << 4) | y;
2012 /* Externally, threadrefs are 64 bits but internally, they are still
2013 ints. This is due to a mismatch of specifications. We would like
2014 to use 64bit thread references internally. This is an adapter
2018 int_to_threadref (threadref *id, int value)
2020 unsigned char *scan;
2022 scan = (unsigned char *) id;
2028 *scan++ = (value >> 24) & 0xff;
2029 *scan++ = (value >> 16) & 0xff;
2030 *scan++ = (value >> 8) & 0xff;
2031 *scan++ = (value & 0xff);
2035 threadref_to_int (threadref *ref)
2038 unsigned char *scan;
2044 value = (value << 8) | ((*scan++) & 0xff);
2049 copy_threadref (threadref *dest, threadref *src)
2052 unsigned char *csrc, *cdest;
2054 csrc = (unsigned char *) src;
2055 cdest = (unsigned char *) dest;
2062 threadmatch (threadref *dest, threadref *src)
2064 /* Things are broken right now, so just assume we got a match. */
2066 unsigned char *srcp, *destp;
2068 srcp = (char *) src;
2069 destp = (char *) dest;
2073 result &= (*srcp++ == *destp++) ? 1 : 0;
2080 threadid:1, # always request threadid
2087 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2090 pack_threadinfo_request (char *pkt, int mode, threadref *id)
2092 *pkt++ = 'q'; /* Info Query */
2093 *pkt++ = 'P'; /* process or thread info */
2094 pkt = pack_int (pkt, mode); /* mode */
2095 pkt = pack_threadid (pkt, id); /* threadid */
2096 *pkt = '\0'; /* terminate */
2100 /* These values tag the fields in a thread info response packet. */
2101 /* Tagging the fields allows us to request specific fields and to
2102 add more fields as time goes by. */
2104 #define TAG_THREADID 1 /* Echo the thread identifier. */
2105 #define TAG_EXISTS 2 /* Is this process defined enough to
2106 fetch registers and its stack? */
2107 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2108 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2109 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2113 remote_unpack_thread_info_response (char *pkt, threadref *expectedref,
2114 struct gdb_ext_thread_info *info)
2116 struct remote_state *rs = get_remote_state ();
2120 char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */
2123 /* info->threadid = 0; FIXME: implement zero_threadref. */
2125 info->display[0] = '\0';
2126 info->shortname[0] = '\0';
2127 info->more_display[0] = '\0';
2129 /* Assume the characters indicating the packet type have been
2131 pkt = unpack_int (pkt, &mask); /* arg mask */
2132 pkt = unpack_threadid (pkt, &ref);
2135 warning (_("Incomplete response to threadinfo request."));
2136 if (!threadmatch (&ref, expectedref))
2137 { /* This is an answer to a different request. */
2138 warning (_("ERROR RMT Thread info mismatch."));
2141 copy_threadref (&info->threadid, &ref);
2143 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2145 /* Packets are terminated with nulls. */
2146 while ((pkt < limit) && mask && *pkt)
2148 pkt = unpack_int (pkt, &tag); /* tag */
2149 pkt = unpack_byte (pkt, &length); /* length */
2150 if (!(tag & mask)) /* Tags out of synch with mask. */
2152 warning (_("ERROR RMT: threadinfo tag mismatch."));
2156 if (tag == TAG_THREADID)
2160 warning (_("ERROR RMT: length of threadid is not 16."));
2164 pkt = unpack_threadid (pkt, &ref);
2165 mask = mask & ~TAG_THREADID;
2168 if (tag == TAG_EXISTS)
2170 info->active = stub_unpack_int (pkt, length);
2172 mask = mask & ~(TAG_EXISTS);
2175 warning (_("ERROR RMT: 'exists' length too long."));
2181 if (tag == TAG_THREADNAME)
2183 pkt = unpack_string (pkt, &info->shortname[0], length);
2184 mask = mask & ~TAG_THREADNAME;
2187 if (tag == TAG_DISPLAY)
2189 pkt = unpack_string (pkt, &info->display[0], length);
2190 mask = mask & ~TAG_DISPLAY;
2193 if (tag == TAG_MOREDISPLAY)
2195 pkt = unpack_string (pkt, &info->more_display[0], length);
2196 mask = mask & ~TAG_MOREDISPLAY;
2199 warning (_("ERROR RMT: unknown thread info tag."));
2200 break; /* Not a tag we know about. */
2206 remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */
2207 struct gdb_ext_thread_info *info)
2209 struct remote_state *rs = get_remote_state ();
2212 pack_threadinfo_request (rs->buf, fieldset, threadid);
2214 getpkt (&rs->buf, &rs->buf_size, 0);
2216 if (rs->buf[0] == '\0')
2219 result = remote_unpack_thread_info_response (rs->buf + 2,
2224 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2227 pack_threadlist_request (char *pkt, int startflag, int threadcount,
2228 threadref *nextthread)
2230 *pkt++ = 'q'; /* info query packet */
2231 *pkt++ = 'L'; /* Process LIST or threadLIST request */
2232 pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */
2233 pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */
2234 pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */
2239 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2242 parse_threadlist_response (char *pkt, int result_limit,
2243 threadref *original_echo, threadref *resultlist,
2246 struct remote_state *rs = get_remote_state ();
2248 int count, resultcount, done;
2251 /* Assume the 'q' and 'M chars have been stripped. */
2252 limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE);
2253 /* done parse past here */
2254 pkt = unpack_byte (pkt, &count); /* count field */
2255 pkt = unpack_nibble (pkt, &done);
2256 /* The first threadid is the argument threadid. */
2257 pkt = unpack_threadid (pkt, original_echo); /* should match query packet */
2258 while ((count-- > 0) && (pkt < limit))
2260 pkt = unpack_threadid (pkt, resultlist++);
2261 if (resultcount++ >= result_limit)
2270 remote_get_threadlist (int startflag, threadref *nextthread, int result_limit,
2271 int *done, int *result_count, threadref *threadlist)
2273 struct remote_state *rs = get_remote_state ();
2274 static threadref echo_nextthread;
2277 /* Trancate result limit to be smaller than the packet size. */
2278 if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ())
2279 result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2;
2281 pack_threadlist_request (rs->buf, startflag, result_limit, nextthread);
2283 getpkt (&rs->buf, &rs->buf_size, 0);
2285 if (*rs->buf == '\0')
2289 parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread,
2292 if (!threadmatch (&echo_nextthread, nextthread))
2294 /* FIXME: This is a good reason to drop the packet. */
2295 /* Possably, there is a duplicate response. */
2297 retransmit immediatly - race conditions
2298 retransmit after timeout - yes
2300 wait for packet, then exit
2302 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2303 return 0; /* I choose simply exiting. */
2305 if (*result_count <= 0)
2309 warning (_("RMT ERROR : failed to get remote thread list."));
2312 return result; /* break; */
2314 if (*result_count > result_limit)
2317 warning (_("RMT ERROR: threadlist response longer than requested."));
2323 /* This is the interface between remote and threads, remotes upper
2326 /* remote_find_new_threads retrieves the thread list and for each
2327 thread in the list, looks up the thread in GDB's internal list,
2328 adding the thread if it does not already exist. This involves
2329 getting partial thread lists from the remote target so, polling the
2330 quit_flag is required. */
2333 /* About this many threadisds fit in a packet. */
2335 #define MAXTHREADLISTRESULTS 32
2338 remote_threadlist_iterator (rmt_thread_action stepfunction, void *context,
2341 int done, i, result_count;
2345 static threadref nextthread;
2346 static threadref resultthreadlist[MAXTHREADLISTRESULTS];
2351 if (loopcount++ > looplimit)
2354 warning (_("Remote fetch threadlist -infinite loop-."));
2357 if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS,
2358 &done, &result_count, resultthreadlist))
2363 /* Clear for later iterations. */
2365 /* Setup to resume next batch of thread references, set nextthread. */
2366 if (result_count >= 1)
2367 copy_threadref (&nextthread, &resultthreadlist[result_count - 1]);
2369 while (result_count--)
2370 if (!(result = (*stepfunction) (&resultthreadlist[i++], context)))
2377 remote_newthread_step (threadref *ref, void *context)
2379 int pid = ptid_get_pid (inferior_ptid);
2380 ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref));
2382 if (!in_thread_list (ptid))
2384 return 1; /* continue iterator */
2387 #define CRAZY_MAX_THREADS 1000
2390 remote_current_thread (ptid_t oldpid)
2392 struct remote_state *rs = get_remote_state ();
2395 getpkt (&rs->buf, &rs->buf_size, 0);
2396 if (rs->buf[0] == 'Q' && rs->buf[1] == 'C')
2397 return read_ptid (&rs->buf[2], NULL);
2402 /* Find new threads for info threads command.
2403 * Original version, using John Metzler's thread protocol.
2407 remote_find_new_threads (void)
2409 remote_threadlist_iterator (remote_newthread_step, 0,
2413 #if defined(HAVE_LIBEXPAT)
2415 typedef struct thread_item
2421 DEF_VEC_O(thread_item_t);
2423 struct threads_parsing_context
2425 VEC (thread_item_t) *items;
2429 start_thread (struct gdb_xml_parser *parser,
2430 const struct gdb_xml_element *element,
2431 void *user_data, VEC(gdb_xml_value_s) *attributes)
2433 struct threads_parsing_context *data = user_data;
2435 struct thread_item item;
2438 id = VEC_index (gdb_xml_value_s, attributes, 0)->value;
2439 item.ptid = read_ptid (id, NULL);
2441 if (VEC_length (gdb_xml_value_s, attributes) > 1)
2442 item.core = *(ULONGEST *) VEC_index (gdb_xml_value_s, attributes, 1)->value;
2448 VEC_safe_push (thread_item_t, data->items, &item);
2452 end_thread (struct gdb_xml_parser *parser,
2453 const struct gdb_xml_element *element,
2454 void *user_data, const char *body_text)
2456 struct threads_parsing_context *data = user_data;
2458 if (body_text && *body_text)
2459 VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text);
2462 const struct gdb_xml_attribute thread_attributes[] = {
2463 { "id", GDB_XML_AF_NONE, NULL, NULL },
2464 { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL },
2465 { NULL, GDB_XML_AF_NONE, NULL, NULL }
2468 const struct gdb_xml_element thread_children[] = {
2469 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2472 const struct gdb_xml_element threads_children[] = {
2473 { "thread", thread_attributes, thread_children,
2474 GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
2475 start_thread, end_thread },
2476 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2479 const struct gdb_xml_element threads_elements[] = {
2480 { "threads", NULL, threads_children,
2481 GDB_XML_EF_NONE, NULL, NULL },
2482 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2485 /* Discard the contents of the constructed thread info context. */
2488 clear_threads_parsing_context (void *p)
2490 struct threads_parsing_context *context = p;
2492 struct thread_item *item;
2494 for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i)
2495 xfree (item->extra);
2497 VEC_free (thread_item_t, context->items);
2503 * Find all threads for info threads command.
2504 * Uses new thread protocol contributed by Cisco.
2505 * Falls back and attempts to use the older method (above)
2506 * if the target doesn't respond to the new method.
2510 remote_threads_info (struct target_ops *ops)
2512 struct remote_state *rs = get_remote_state ();
2516 if (remote_desc == 0) /* paranoia */
2517 error (_("Command can only be used when connected to the remote target."));
2519 #if defined(HAVE_LIBEXPAT)
2520 if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE)
2522 char *xml = target_read_stralloc (¤t_target,
2523 TARGET_OBJECT_THREADS, NULL);
2525 struct cleanup *back_to = make_cleanup (xfree, xml);
2528 struct gdb_xml_parser *parser;
2529 struct threads_parsing_context context;
2530 struct cleanup *clear_parsing_context;
2533 /* Note: this parser cleanup is already guarded by BACK_TO
2535 parser = gdb_xml_create_parser_and_cleanup (_("threads"),
2539 gdb_xml_use_dtd (parser, "threads.dtd");
2541 clear_parsing_context
2542 = make_cleanup (clear_threads_parsing_context, &context);
2544 if (gdb_xml_parse (parser, xml) == 0)
2547 struct thread_item *item;
2549 for (i = 0; VEC_iterate (thread_item_t, context.items, i, item); ++i)
2551 if (!ptid_equal (item->ptid, null_ptid))
2553 struct private_thread_info *info;
2554 /* In non-stop mode, we assume new found threads
2555 are running until proven otherwise with a
2556 stop reply. In all-stop, we can only get
2557 here if all threads are stopped. */
2558 int running = non_stop ? 1 : 0;
2560 remote_notice_new_inferior (item->ptid, running);
2562 info = demand_private_info (item->ptid);
2563 info->core = item->core;
2564 info->extra = item->extra;
2570 do_cleanups (clear_parsing_context);
2573 do_cleanups (back_to);
2578 if (use_threadinfo_query)
2580 putpkt ("qfThreadInfo");
2581 getpkt (&rs->buf, &rs->buf_size, 0);
2583 if (bufp[0] != '\0') /* q packet recognized */
2585 while (*bufp++ == 'm') /* reply contains one or more TID */
2589 new_thread = read_ptid (bufp, &bufp);
2590 if (!ptid_equal (new_thread, null_ptid))
2592 /* In non-stop mode, we assume new found threads
2593 are running until proven otherwise with a
2594 stop reply. In all-stop, we can only get
2595 here if all threads are stopped. */
2596 int running = non_stop ? 1 : 0;
2598 remote_notice_new_inferior (new_thread, running);
2601 while (*bufp++ == ','); /* comma-separated list */
2602 putpkt ("qsThreadInfo");
2603 getpkt (&rs->buf, &rs->buf_size, 0);
2610 /* Only qfThreadInfo is supported in non-stop mode. */
2614 /* Else fall back to old method based on jmetzler protocol. */
2615 use_threadinfo_query = 0;
2616 remote_find_new_threads ();
2621 * Collect a descriptive string about the given thread.
2622 * The target may say anything it wants to about the thread
2623 * (typically info about its blocked / runnable state, name, etc.).
2624 * This string will appear in the info threads display.
2626 * Optional: targets are not required to implement this function.
2630 remote_threads_extra_info (struct thread_info *tp)
2632 struct remote_state *rs = get_remote_state ();
2636 struct gdb_ext_thread_info threadinfo;
2637 static char display_buf[100]; /* arbitrary... */
2638 int n = 0; /* position in display_buf */
2640 if (remote_desc == 0) /* paranoia */
2641 internal_error (__FILE__, __LINE__,
2642 _("remote_threads_extra_info"));
2644 if (ptid_equal (tp->ptid, magic_null_ptid)
2645 || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0))
2646 /* This is the main thread which was added by GDB. The remote
2647 server doesn't know about it. */
2650 if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE)
2652 struct thread_info *info = find_thread_ptid (tp->ptid);
2653 if (info && info->private)
2654 return info->private->extra;
2659 if (use_threadextra_query)
2662 char *endb = rs->buf + get_remote_packet_size ();
2664 xsnprintf (b, endb - b, "qThreadExtraInfo,");
2666 write_ptid (b, endb, tp->ptid);
2669 getpkt (&rs->buf, &rs->buf_size, 0);
2670 if (rs->buf[0] != 0)
2672 n = min (strlen (rs->buf) / 2, sizeof (display_buf));
2673 result = hex2bin (rs->buf, (gdb_byte *) display_buf, n);
2674 display_buf [result] = '\0';
2679 /* If the above query fails, fall back to the old method. */
2680 use_threadextra_query = 0;
2681 set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
2682 | TAG_MOREDISPLAY | TAG_DISPLAY;
2683 int_to_threadref (&id, ptid_get_tid (tp->ptid));
2684 if (remote_get_threadinfo (&id, set, &threadinfo))
2685 if (threadinfo.active)
2687 if (*threadinfo.shortname)
2688 n += xsnprintf (&display_buf[0], sizeof (display_buf) - n,
2689 " Name: %s,", threadinfo.shortname);
2690 if (*threadinfo.display)
2691 n += xsnprintf (&display_buf[n], sizeof (display_buf) - n,
2692 " State: %s,", threadinfo.display);
2693 if (*threadinfo.more_display)
2694 n += xsnprintf (&display_buf[n], sizeof (display_buf) - n,
2695 " Priority: %s", threadinfo.more_display);
2699 /* For purely cosmetic reasons, clear up trailing commas. */
2700 if (',' == display_buf[n-1])
2701 display_buf[n-1] = ' ';
2709 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2712 remote_get_ada_task_ptid (long lwp, long thread)
2714 return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp);
2718 /* Restart the remote side; this is an extended protocol operation. */
2721 extended_remote_restart (void)
2723 struct remote_state *rs = get_remote_state ();
2725 /* Send the restart command; for reasons I don't understand the
2726 remote side really expects a number after the "R". */
2727 xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0);
2730 remote_fileio_reset ();
2733 /* Clean up connection to a remote debugger. */
2736 remote_close (int quitting)
2738 if (remote_desc == NULL)
2739 return; /* already closed */
2741 /* Make sure we leave stdin registered in the event loop, and we
2742 don't leave the async SIGINT signal handler installed. */
2743 remote_terminal_ours ();
2745 serial_close (remote_desc);
2748 /* We don't have a connection to the remote stub anymore. Get rid
2749 of all the inferiors and their threads we were controlling. */
2750 discard_all_inferiors ();
2752 /* We're no longer interested in any of these events. */
2753 discard_pending_stop_replies (-1);
2755 if (remote_async_inferior_event_token)
2756 delete_async_event_handler (&remote_async_inferior_event_token);
2757 if (remote_async_get_pending_events_token)
2758 delete_async_event_handler (&remote_async_get_pending_events_token);
2761 /* Query the remote side for the text, data and bss offsets. */
2766 struct remote_state *rs = get_remote_state ();
2769 int lose, num_segments = 0, do_sections, do_segments;
2770 CORE_ADDR text_addr, data_addr, bss_addr, segments[2];
2771 struct section_offsets *offs;
2772 struct symfile_segment_data *data;
2774 if (symfile_objfile == NULL)
2777 putpkt ("qOffsets");
2778 getpkt (&rs->buf, &rs->buf_size, 0);
2781 if (buf[0] == '\000')
2782 return; /* Return silently. Stub doesn't support
2786 warning (_("Remote failure reply: %s"), buf);
2790 /* Pick up each field in turn. This used to be done with scanf, but
2791 scanf will make trouble if CORE_ADDR size doesn't match
2792 conversion directives correctly. The following code will work
2793 with any size of CORE_ADDR. */
2794 text_addr = data_addr = bss_addr = 0;
2798 if (strncmp (ptr, "Text=", 5) == 0)
2801 /* Don't use strtol, could lose on big values. */
2802 while (*ptr && *ptr != ';')
2803 text_addr = (text_addr << 4) + fromhex (*ptr++);
2805 if (strncmp (ptr, ";Data=", 6) == 0)
2808 while (*ptr && *ptr != ';')
2809 data_addr = (data_addr << 4) + fromhex (*ptr++);
2814 if (!lose && strncmp (ptr, ";Bss=", 5) == 0)
2817 while (*ptr && *ptr != ';')
2818 bss_addr = (bss_addr << 4) + fromhex (*ptr++);
2820 if (bss_addr != data_addr)
2821 warning (_("Target reported unsupported offsets: %s"), buf);
2826 else if (strncmp (ptr, "TextSeg=", 8) == 0)
2829 /* Don't use strtol, could lose on big values. */
2830 while (*ptr && *ptr != ';')
2831 text_addr = (text_addr << 4) + fromhex (*ptr++);
2834 if (strncmp (ptr, ";DataSeg=", 9) == 0)
2837 while (*ptr && *ptr != ';')
2838 data_addr = (data_addr << 4) + fromhex (*ptr++);
2846 error (_("Malformed response to offset query, %s"), buf);
2847 else if (*ptr != '\0')
2848 warning (_("Target reported unsupported offsets: %s"), buf);
2850 offs = ((struct section_offsets *)
2851 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)));
2852 memcpy (offs, symfile_objfile->section_offsets,
2853 SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections));
2855 data = get_symfile_segment_data (symfile_objfile->obfd);
2856 do_segments = (data != NULL);
2857 do_sections = num_segments == 0;
2859 if (num_segments > 0)
2861 segments[0] = text_addr;
2862 segments[1] = data_addr;
2864 /* If we have two segments, we can still try to relocate everything
2865 by assuming that the .text and .data offsets apply to the whole
2866 text and data segments. Convert the offsets given in the packet
2867 to base addresses for symfile_map_offsets_to_segments. */
2868 else if (data && data->num_segments == 2)
2870 segments[0] = data->segment_bases[0] + text_addr;
2871 segments[1] = data->segment_bases[1] + data_addr;
2874 /* If the object file has only one segment, assume that it is text
2875 rather than data; main programs with no writable data are rare,
2876 but programs with no code are useless. Of course the code might
2877 have ended up in the data segment... to detect that we would need
2878 the permissions here. */
2879 else if (data && data->num_segments == 1)
2881 segments[0] = data->segment_bases[0] + text_addr;
2884 /* There's no way to relocate by segment. */
2890 int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data,
2891 offs, num_segments, segments);
2893 if (ret == 0 && !do_sections)
2894 error (_("Can not handle qOffsets TextSeg response with this symbol file"));
2901 free_symfile_segment_data (data);
2905 offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr;
2907 /* This is a temporary kludge to force data and bss to use the same offsets
2908 because that's what nlmconv does now. The real solution requires changes
2909 to the stub and remote.c that I don't have time to do right now. */
2911 offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr;
2912 offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr;
2915 objfile_relocate (symfile_objfile, offs);
2918 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
2919 threads we know are stopped already. This is used during the
2920 initial remote connection in non-stop mode --- threads that are
2921 reported as already being stopped are left stopped. */
2924 set_stop_requested_callback (struct thread_info *thread, void *data)
2926 /* If we have a stop reply for this thread, it must be stopped. */
2927 if (peek_stop_reply (thread->ptid))
2928 set_stop_requested (thread->ptid, 1);
2933 /* Stub for catch_exception. */
2935 struct start_remote_args
2939 /* The current target. */
2940 struct target_ops *target;
2942 /* Non-zero if this is an extended-remote target. */
2946 /* Send interrupt_sequence to remote target. */
2948 send_interrupt_sequence ()
2950 if (interrupt_sequence_mode == interrupt_sequence_control_c)
2951 serial_write (remote_desc, "\x03", 1);
2952 else if (interrupt_sequence_mode == interrupt_sequence_break)
2953 serial_send_break (remote_desc);
2954 else if (interrupt_sequence_mode == interrupt_sequence_break_g)
2956 serial_send_break (remote_desc);
2957 serial_write (remote_desc, "g", 1);
2960 internal_error (__FILE__, __LINE__,
2961 _("Invalid value for interrupt_sequence_mode: %s."),
2962 interrupt_sequence_mode);
2966 remote_start_remote (struct ui_out *uiout, void *opaque)
2968 struct start_remote_args *args = opaque;
2969 struct remote_state *rs = get_remote_state ();
2970 struct packet_config *noack_config;
2971 char *wait_status = NULL;
2973 immediate_quit++; /* Allow user to interrupt it. */
2975 /* Ack any packet which the remote side has already sent. */
2976 serial_write (remote_desc, "+", 1);
2978 if (interrupt_on_connect)
2979 send_interrupt_sequence ();
2981 /* The first packet we send to the target is the optional "supported
2982 packets" request. If the target can answer this, it will tell us
2983 which later probes to skip. */
2984 remote_query_supported ();
2986 /* Next, we possibly activate noack mode.
2988 If the QStartNoAckMode packet configuration is set to AUTO,
2989 enable noack mode if the stub reported a wish for it with
2992 If set to TRUE, then enable noack mode even if the stub didn't
2993 report it in qSupported. If the stub doesn't reply OK, the
2994 session ends with an error.
2996 If FALSE, then don't activate noack mode, regardless of what the
2997 stub claimed should be the default with qSupported. */
2999 noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode];
3001 if (noack_config->detect == AUTO_BOOLEAN_TRUE
3002 || (noack_config->detect == AUTO_BOOLEAN_AUTO
3003 && noack_config->support == PACKET_ENABLE))
3005 putpkt ("QStartNoAckMode");
3006 getpkt (&rs->buf, &rs->buf_size, 0);
3007 if (packet_ok (rs->buf, noack_config) == PACKET_OK)
3011 if (args->extended_p)
3013 /* Tell the remote that we are using the extended protocol. */
3015 getpkt (&rs->buf, &rs->buf_size, 0);
3018 /* Next, if the target can specify a description, read it. We do
3019 this before anything involving memory or registers. */
3020 target_find_description ();
3022 /* Next, now that we know something about the target, update the
3023 address spaces in the program spaces. */
3024 update_address_spaces ();
3026 /* On OSs where the list of libraries is global to all
3027 processes, we fetch them early. */
3028 if (gdbarch_has_global_solist (target_gdbarch))
3029 solib_add (NULL, args->from_tty, args->target, auto_solib_add);
3033 if (!rs->non_stop_aware)
3034 error (_("Non-stop mode requested, but remote does not support non-stop"));
3036 putpkt ("QNonStop:1");
3037 getpkt (&rs->buf, &rs->buf_size, 0);
3039 if (strcmp (rs->buf, "OK") != 0)
3040 error ("Remote refused setting non-stop mode with: %s", rs->buf);
3042 /* Find about threads and processes the stub is already
3043 controlling. We default to adding them in the running state.
3044 The '?' query below will then tell us about which threads are
3046 remote_threads_info (args->target);
3048 else if (rs->non_stop_aware)
3050 /* Don't assume that the stub can operate in all-stop mode.
3051 Request it explicitely. */
3052 putpkt ("QNonStop:0");
3053 getpkt (&rs->buf, &rs->buf_size, 0);
3055 if (strcmp (rs->buf, "OK") != 0)
3056 error ("Remote refused setting all-stop mode with: %s", rs->buf);
3059 /* Check whether the target is running now. */
3061 getpkt (&rs->buf, &rs->buf_size, 0);
3065 if (rs->buf[0] == 'W' || rs->buf[0] == 'X')
3067 if (!args->extended_p)
3068 error (_("The target is not running (try extended-remote?)"));
3070 /* We're connected, but not running. Drop out before we
3071 call start_remote. */
3076 /* Save the reply for later. */
3077 wait_status = alloca (strlen (rs->buf) + 1);
3078 strcpy (wait_status, rs->buf);
3081 /* Let the stub know that we want it to return the thread. */
3082 set_continue_thread (minus_one_ptid);
3084 /* Without this, some commands which require an active target
3085 (such as kill) won't work. This variable serves (at least)
3086 double duty as both the pid of the target process (if it has
3087 such), and as a flag indicating that a target is active.
3088 These functions should be split out into seperate variables,
3089 especially since GDB will someday have a notion of debugging
3090 several processes. */
3091 inferior_ptid = magic_null_ptid;
3093 /* Now, if we have thread information, update inferior_ptid. */
3094 inferior_ptid = remote_current_thread (inferior_ptid);
3096 remote_add_inferior (ptid_get_pid (inferior_ptid), -1);
3098 /* Always add the main thread. */
3099 add_thread_silent (inferior_ptid);
3101 get_offsets (); /* Get text, data & bss offsets. */
3103 /* If we could not find a description using qXfer, and we know
3104 how to do it some other way, try again. This is not
3105 supported for non-stop; it could be, but it is tricky if
3106 there are no stopped threads when we connect. */
3107 if (remote_read_description_p (args->target)
3108 && gdbarch_target_desc (target_gdbarch) == NULL)
3110 target_clear_description ();
3111 target_find_description ();
3114 /* Use the previously fetched status. */
3115 gdb_assert (wait_status != NULL);
3116 strcpy (rs->buf, wait_status);
3117 rs->cached_wait_status = 1;
3120 start_remote (args->from_tty); /* Initialize gdb process mechanisms. */
3124 /* Clear WFI global state. Do this before finding about new
3125 threads and inferiors, and setting the current inferior.
3126 Otherwise we would clear the proceed status of the current
3127 inferior when we want its stop_soon state to be preserved
3128 (see notice_new_inferior). */
3129 init_wait_for_inferior ();
3131 /* In non-stop, we will either get an "OK", meaning that there
3132 are no stopped threads at this time; or, a regular stop
3133 reply. In the latter case, there may be more than one thread
3134 stopped --- we pull them all out using the vStopped
3136 if (strcmp (rs->buf, "OK") != 0)
3138 struct stop_reply *stop_reply;
3139 struct cleanup *old_chain;
3141 stop_reply = stop_reply_xmalloc ();
3142 old_chain = make_cleanup (do_stop_reply_xfree, stop_reply);
3144 remote_parse_stop_reply (rs->buf, stop_reply);
3145 discard_cleanups (old_chain);
3147 /* get_pending_stop_replies acks this one, and gets the rest
3149 pending_stop_reply = stop_reply;
3150 remote_get_pending_stop_replies ();
3152 /* Make sure that threads that were stopped remain
3154 iterate_over_threads (set_stop_requested_callback, NULL);
3157 if (target_can_async_p ())
3158 target_async (inferior_event_handler, 0);
3160 if (thread_count () == 0)
3162 if (!args->extended_p)
3163 error (_("The target is not running (try extended-remote?)"));
3165 /* We're connected, but not running. Drop out before we
3166 call start_remote. */
3170 /* Let the stub know that we want it to return the thread. */
3172 /* Force the stub to choose a thread. */
3173 set_general_thread (null_ptid);
3176 inferior_ptid = remote_current_thread (minus_one_ptid);
3177 if (ptid_equal (inferior_ptid, minus_one_ptid))
3178 error (_("remote didn't report the current thread in non-stop mode"));
3180 get_offsets (); /* Get text, data & bss offsets. */
3182 /* In non-stop mode, any cached wait status will be stored in
3183 the stop reply queue. */
3184 gdb_assert (wait_status == NULL);
3186 /* Update the remote on signals to silently pass, or more
3187 importantly, which to not ignore, in case a previous session
3188 had set some different set of signals to be ignored. */
3189 remote_pass_signals ();
3192 /* If we connected to a live target, do some additional setup. */
3193 if (target_has_execution)
3195 if (exec_bfd) /* No use without an exec file. */
3196 remote_check_symbols (symfile_objfile);
3199 /* Possibly the target has been engaged in a trace run started
3200 previously; find out where things are at. */
3201 if (remote_get_trace_status (current_trace_status ()) != -1)
3203 struct uploaded_tp *uploaded_tps = NULL;
3204 struct uploaded_tsv *uploaded_tsvs = NULL;
3206 if (current_trace_status ()->running)
3207 printf_filtered (_("Trace is already running on the target.\n"));
3209 /* Get trace state variables first, they may be checked when
3210 parsing uploaded commands. */
3212 remote_upload_trace_state_variables (&uploaded_tsvs);
3214 merge_uploaded_trace_state_variables (&uploaded_tsvs);
3216 remote_upload_tracepoints (&uploaded_tps);
3218 merge_uploaded_tracepoints (&uploaded_tps);
3221 /* If breakpoints are global, insert them now. */
3222 if (gdbarch_has_global_breakpoints (target_gdbarch)
3223 && breakpoints_always_inserted_mode ())
3224 insert_breakpoints ();
3227 /* Open a connection to a remote debugger.
3228 NAME is the filename used for communication. */
3231 remote_open (char *name, int from_tty)
3233 remote_open_1 (name, from_tty, &remote_ops, 0);
3236 /* Open a connection to a remote debugger using the extended
3237 remote gdb protocol. NAME is the filename used for communication. */
3240 extended_remote_open (char *name, int from_tty)
3242 remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */);
3245 /* Generic code for opening a connection to a remote target. */
3248 init_all_packet_configs (void)
3251 for (i = 0; i < PACKET_MAX; i++)
3252 update_packet_config (&remote_protocol_packets[i]);
3255 /* Symbol look-up. */
3258 remote_check_symbols (struct objfile *objfile)
3260 struct remote_state *rs = get_remote_state ();
3261 char *msg, *reply, *tmp;
3262 struct minimal_symbol *sym;
3265 if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE)
3268 /* Make sure the remote is pointing at the right process. */
3269 set_general_process ();
3271 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3272 because we need both at the same time. */
3273 msg = alloca (get_remote_packet_size ());
3275 /* Invite target to request symbol lookups. */
3277 putpkt ("qSymbol::");
3278 getpkt (&rs->buf, &rs->buf_size, 0);
3279 packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]);
3282 while (strncmp (reply, "qSymbol:", 8) == 0)
3285 end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2);
3287 sym = lookup_minimal_symbol (msg, NULL, NULL);
3289 xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]);
3292 int addr_size = gdbarch_addr_bit (target_gdbarch) / 8;
3293 CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym);
3295 /* If this is a function address, return the start of code
3296 instead of any data function descriptor. */
3297 sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch,
3301 xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s",
3302 phex_nz (sym_addr, addr_size), &reply[8]);
3306 getpkt (&rs->buf, &rs->buf_size, 0);
3311 static struct serial *
3312 remote_serial_open (char *name)
3314 static int udp_warning = 0;
3316 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3317 of in ser-tcp.c, because it is the remote protocol assuming that the
3318 serial connection is reliable and not the serial connection promising
3320 if (!udp_warning && strncmp (name, "udp:", 4) == 0)
3323 The remote protocol may be unreliable over UDP.\n\
3324 Some events may be lost, rendering further debugging impossible."));
3328 return serial_open (name);
3331 /* This type describes each known response to the qSupported
3333 struct protocol_feature
3335 /* The name of this protocol feature. */
3338 /* The default for this protocol feature. */
3339 enum packet_support default_support;
3341 /* The function to call when this feature is reported, or after
3342 qSupported processing if the feature is not supported.
3343 The first argument points to this structure. The second
3344 argument indicates whether the packet requested support be
3345 enabled, disabled, or probed (or the default, if this function
3346 is being called at the end of processing and this feature was
3347 not reported). The third argument may be NULL; if not NULL, it
3348 is a NUL-terminated string taken from the packet following
3349 this feature's name and an equals sign. */
3350 void (*func) (const struct protocol_feature *, enum packet_support,
3353 /* The corresponding packet for this feature. Only used if
3354 FUNC is remote_supported_packet. */
3359 remote_supported_packet (const struct protocol_feature *feature,
3360 enum packet_support support,
3361 const char *argument)
3365 warning (_("Remote qSupported response supplied an unexpected value for"
3366 " \"%s\"."), feature->name);
3370 if (remote_protocol_packets[feature->packet].support
3371 == PACKET_SUPPORT_UNKNOWN)
3372 remote_protocol_packets[feature->packet].support = support;
3376 remote_packet_size (const struct protocol_feature *feature,
3377 enum packet_support support, const char *value)
3379 struct remote_state *rs = get_remote_state ();
3384 if (support != PACKET_ENABLE)
3387 if (value == NULL || *value == '\0')
3389 warning (_("Remote target reported \"%s\" without a size."),
3395 packet_size = strtol (value, &value_end, 16);
3396 if (errno != 0 || *value_end != '\0' || packet_size < 0)
3398 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3399 feature->name, value);
3403 if (packet_size > MAX_REMOTE_PACKET_SIZE)
3405 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3406 packet_size, MAX_REMOTE_PACKET_SIZE);
3407 packet_size = MAX_REMOTE_PACKET_SIZE;
3410 /* Record the new maximum packet size. */
3411 rs->explicit_packet_size = packet_size;
3415 remote_multi_process_feature (const struct protocol_feature *feature,
3416 enum packet_support support, const char *value)
3418 struct remote_state *rs = get_remote_state ();
3419 rs->multi_process_aware = (support == PACKET_ENABLE);
3423 remote_non_stop_feature (const struct protocol_feature *feature,
3424 enum packet_support support, const char *value)
3426 struct remote_state *rs = get_remote_state ();
3427 rs->non_stop_aware = (support == PACKET_ENABLE);
3431 remote_cond_tracepoint_feature (const struct protocol_feature *feature,
3432 enum packet_support support,
3435 struct remote_state *rs = get_remote_state ();
3436 rs->cond_tracepoints = (support == PACKET_ENABLE);
3440 remote_fast_tracepoint_feature (const struct protocol_feature *feature,
3441 enum packet_support support,
3444 struct remote_state *rs = get_remote_state ();
3445 rs->fast_tracepoints = (support == PACKET_ENABLE);
3449 remote_disconnected_tracing_feature (const struct protocol_feature *feature,
3450 enum packet_support support,
3453 struct remote_state *rs = get_remote_state ();
3454 rs->disconnected_tracing = (support == PACKET_ENABLE);
3457 static struct protocol_feature remote_protocol_features[] = {
3458 { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 },
3459 { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet,
3460 PACKET_qXfer_auxv },
3461 { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet,
3462 PACKET_qXfer_features },
3463 { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet,
3464 PACKET_qXfer_libraries },
3465 { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet,
3466 PACKET_qXfer_memory_map },
3467 { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet,
3468 PACKET_qXfer_spu_read },
3469 { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet,
3470 PACKET_qXfer_spu_write },
3471 { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet,
3472 PACKET_qXfer_osdata },
3473 { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet,
3474 PACKET_qXfer_threads },
3475 { "QPassSignals", PACKET_DISABLE, remote_supported_packet,
3476 PACKET_QPassSignals },
3477 { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet,
3478 PACKET_QStartNoAckMode },
3479 { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 },
3480 { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 },
3481 { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet,
3482 PACKET_qXfer_siginfo_read },
3483 { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet,
3484 PACKET_qXfer_siginfo_write },
3485 { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature,
3486 PACKET_ConditionalTracepoints },
3487 { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature,
3488 PACKET_FastTracepoints },
3489 { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature,
3491 { "ReverseContinue", PACKET_DISABLE, remote_supported_packet,
3493 { "ReverseStep", PACKET_DISABLE, remote_supported_packet,
3495 { "TracepointSource", PACKET_DISABLE, remote_supported_packet,
3496 PACKET_TracepointSource },
3499 static char *remote_support_xml;
3501 /* Register string appended to "xmlRegisters=" in qSupported query. */
3504 register_remote_support_xml (const char *xml)
3506 #if defined(HAVE_LIBEXPAT)
3507 if (remote_support_xml == NULL)
3508 remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL);
3511 char *copy = xstrdup (remote_support_xml + 13);
3512 char *p = strtok (copy, ",");
3516 if (strcmp (p, xml) == 0)
3523 while ((p = strtok (NULL, ",")) != NULL);
3526 remote_support_xml = reconcat (remote_support_xml,
3527 remote_support_xml, ",", xml,
3534 remote_query_supported_append (char *msg, const char *append)
3537 return reconcat (msg, msg, ";", append, (char *) NULL);
3539 return xstrdup (append);
3543 remote_query_supported (void)
3545 struct remote_state *rs = get_remote_state ();
3548 unsigned char seen [ARRAY_SIZE (remote_protocol_features)];
3550 /* The packet support flags are handled differently for this packet
3551 than for most others. We treat an error, a disabled packet, and
3552 an empty response identically: any features which must be reported
3553 to be used will be automatically disabled. An empty buffer
3554 accomplishes this, since that is also the representation for a list
3555 containing no features. */
3558 if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE)
3561 struct cleanup *old_chain = make_cleanup (free_current_contents, &q);
3564 q = remote_query_supported_append (q, "multiprocess+");
3566 if (remote_support_xml)
3567 q = remote_query_supported_append (q, remote_support_xml);
3571 q = reconcat (q, "qSupported:", q, (char *) NULL);
3575 putpkt ("qSupported");
3577 do_cleanups (old_chain);
3579 getpkt (&rs->buf, &rs->buf_size, 0);
3581 /* If an error occured, warn, but do not return - just reset the
3582 buffer to empty and go on to disable features. */
3583 if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported])
3586 warning (_("Remote failure reply: %s"), rs->buf);
3591 memset (seen, 0, sizeof (seen));
3596 enum packet_support is_supported;
3597 char *p, *end, *name_end, *value;
3599 /* First separate out this item from the rest of the packet. If
3600 there's another item after this, we overwrite the separator
3601 (terminated strings are much easier to work with). */
3603 end = strchr (p, ';');
3606 end = p + strlen (p);
3616 warning (_("empty item in \"qSupported\" response"));
3621 name_end = strchr (p, '=');
3624 /* This is a name=value entry. */
3625 is_supported = PACKET_ENABLE;
3626 value = name_end + 1;
3635 is_supported = PACKET_ENABLE;
3639 is_supported = PACKET_DISABLE;
3643 is_supported = PACKET_SUPPORT_UNKNOWN;
3647 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p);
3653 for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++)
3654 if (strcmp (remote_protocol_features[i].name, p) == 0)
3656 const struct protocol_feature *feature;
3659 feature = &remote_protocol_features[i];
3660 feature->func (feature, is_supported, value);
3665 /* If we increased the packet size, make sure to increase the global
3666 buffer size also. We delay this until after parsing the entire
3667 qSupported packet, because this is the same buffer we were
3669 if (rs->buf_size < rs->explicit_packet_size)
3671 rs->buf_size = rs->explicit_packet_size;
3672 rs->buf = xrealloc (rs->buf, rs->buf_size);
3675 /* Handle the defaults for unmentioned features. */
3676 for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++)
3679 const struct protocol_feature *feature;
3681 feature = &remote_protocol_features[i];
3682 feature->func (feature, feature->default_support, NULL);
3688 remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended_p)
3690 struct remote_state *rs = get_remote_state ();
3693 error (_("To open a remote debug connection, you need to specify what\n"
3694 "serial device is attached to the remote system\n"
3695 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
3697 /* See FIXME above. */
3698 if (!target_async_permitted)
3699 wait_forever_enabled_p = 1;
3701 /* If we're connected to a running target, target_preopen will kill it.
3702 But if we're connected to a target system with no running process,
3703 then we will still be connected when it returns. Ask this question
3704 first, before target_preopen has a chance to kill anything. */
3705 if (remote_desc != NULL && !have_inferiors ())
3708 || query (_("Already connected to a remote target. Disconnect? ")))
3711 error (_("Still connected."));
3714 target_preopen (from_tty);
3716 unpush_target (target);
3718 /* This time without a query. If we were connected to an
3719 extended-remote target and target_preopen killed the running
3720 process, we may still be connected. If we are starting "target
3721 remote" now, the extended-remote target will not have been
3722 removed by unpush_target. */
3723 if (remote_desc != NULL && !have_inferiors ())
3726 /* Make sure we send the passed signals list the next time we resume. */
3727 xfree (last_pass_packet);
3728 last_pass_packet = NULL;
3730 remote_fileio_reset ();
3731 reopen_exec_file ();
3734 remote_desc = remote_serial_open (name);
3736 perror_with_name (name);
3738 if (baud_rate != -1)
3740 if (serial_setbaudrate (remote_desc, baud_rate))
3742 /* The requested speed could not be set. Error out to
3743 top level after closing remote_desc. Take care to
3744 set remote_desc to NULL to avoid closing remote_desc
3746 serial_close (remote_desc);
3748 perror_with_name (name);
3752 serial_raw (remote_desc);
3754 /* If there is something sitting in the buffer we might take it as a
3755 response to a command, which would be bad. */
3756 serial_flush_input (remote_desc);
3760 puts_filtered ("Remote debugging using ");
3761 puts_filtered (name);
3762 puts_filtered ("\n");
3764 push_target (target); /* Switch to using remote target now. */
3766 /* Register extra event sources in the event loop. */
3767 remote_async_inferior_event_token
3768 = create_async_event_handler (remote_async_inferior_event_handler,
3770 remote_async_get_pending_events_token
3771 = create_async_event_handler (remote_async_get_pending_events_handler,
3774 /* Reset the target state; these things will be queried either by
3775 remote_query_supported or as they are needed. */
3776 init_all_packet_configs ();
3777 rs->cached_wait_status = 0;
3778 rs->explicit_packet_size = 0;
3780 rs->multi_process_aware = 0;
3781 rs->extended = extended_p;
3782 rs->non_stop_aware = 0;
3783 rs->waiting_for_stop_reply = 0;
3784 rs->ctrlc_pending_p = 0;
3786 general_thread = not_sent_ptid;
3787 continue_thread = not_sent_ptid;
3789 /* Probe for ability to use "ThreadInfo" query, as required. */
3790 use_threadinfo_query = 1;
3791 use_threadextra_query = 1;
3793 if (target_async_permitted)
3795 /* With this target we start out by owning the terminal. */
3796 remote_async_terminal_ours_p = 1;
3798 /* FIXME: cagney/1999-09-23: During the initial connection it is
3799 assumed that the target is already ready and able to respond to
3800 requests. Unfortunately remote_start_remote() eventually calls
3801 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
3802 around this. Eventually a mechanism that allows
3803 wait_for_inferior() to expect/get timeouts will be
3805 wait_forever_enabled_p = 0;
3808 /* First delete any symbols previously loaded from shared libraries. */
3809 no_shared_libraries (NULL, 0);
3812 init_thread_list ();
3814 /* Start the remote connection. If error() or QUIT, discard this
3815 target (we'd otherwise be in an inconsistent state) and then
3816 propogate the error on up the exception chain. This ensures that
3817 the caller doesn't stumble along blindly assuming that the
3818 function succeeded. The CLI doesn't have this problem but other
3819 UI's, such as MI do.
3821 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
3822 this function should return an error indication letting the
3823 caller restore the previous state. Unfortunately the command
3824 ``target remote'' is directly wired to this function making that
3825 impossible. On a positive note, the CLI side of this problem has
3826 been fixed - the function set_cmd_context() makes it possible for
3827 all the ``target ....'' commands to share a common callback
3828 function. See cli-dump.c. */
3830 struct gdb_exception ex;
3831 struct start_remote_args args;
3833 args.from_tty = from_tty;
3834 args.target = target;
3835 args.extended_p = extended_p;
3837 ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL);
3840 /* Pop the partially set up target - unless something else did
3841 already before throwing the exception. */
3842 if (remote_desc != NULL)
3844 if (target_async_permitted)
3845 wait_forever_enabled_p = 1;
3846 throw_exception (ex);
3850 if (target_async_permitted)
3851 wait_forever_enabled_p = 1;
3854 /* This takes a program previously attached to and detaches it. After
3855 this is done, GDB can be used to debug some other program. We
3856 better not have left any breakpoints in the target program or it'll
3857 die when it hits one. */
3860 remote_detach_1 (char *args, int from_tty, int extended)
3862 int pid = ptid_get_pid (inferior_ptid);
3863 struct remote_state *rs = get_remote_state ();
3866 error (_("Argument given to \"detach\" when remotely debugging."));
3868 if (!target_has_execution)
3869 error (_("No process to detach from."));
3871 /* Tell the remote target to detach. */
3872 if (remote_multi_process_p (rs))
3873 sprintf (rs->buf, "D;%x", pid);
3875 strcpy (rs->buf, "D");
3878 getpkt (&rs->buf, &rs->buf_size, 0);
3880 if (rs->buf[0] == 'O' && rs->buf[1] == 'K')
3882 else if (rs->buf[0] == '\0')
3883 error (_("Remote doesn't know how to detach"));
3885 error (_("Can't detach process."));
3889 if (remote_multi_process_p (rs))
3890 printf_filtered (_("Detached from remote %s.\n"),
3891 target_pid_to_str (pid_to_ptid (pid)));
3895 puts_filtered (_("Detached from remote process.\n"));
3897 puts_filtered (_("Ending remote debugging.\n"));
3901 discard_pending_stop_replies (pid);
3902 target_mourn_inferior ();
3906 remote_detach (struct target_ops *ops, char *args, int from_tty)
3908 remote_detach_1 (args, from_tty, 0);
3912 extended_remote_detach (struct target_ops *ops, char *args, int from_tty)
3914 remote_detach_1 (args, from_tty, 1);
3917 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
3920 remote_disconnect (struct target_ops *target, char *args, int from_tty)
3923 error (_("Argument given to \"disconnect\" when remotely debugging."));
3925 /* Make sure we unpush even the extended remote targets; mourn
3926 won't do it. So call remote_mourn_1 directly instead of
3927 target_mourn_inferior. */
3928 remote_mourn_1 (target);
3931 puts_filtered ("Ending remote debugging.\n");
3934 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
3935 be chatty about it. */
3938 extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty)
3940 struct remote_state *rs = get_remote_state ();
3942 char *wait_status = NULL;
3944 pid = parse_pid_to_attach (args);
3946 /* Remote PID can be freely equal to getpid, do not check it here the same
3947 way as in other targets. */
3949 if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE)
3950 error (_("This target does not support attaching to a process"));
3952 sprintf (rs->buf, "vAttach;%x", pid);
3954 getpkt (&rs->buf, &rs->buf_size, 0);
3956 if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK)
3959 printf_unfiltered (_("Attached to %s\n"),
3960 target_pid_to_str (pid_to_ptid (pid)));
3964 /* Save the reply for later. */
3965 wait_status = alloca (strlen (rs->buf) + 1);
3966 strcpy (wait_status, rs->buf);
3968 else if (strcmp (rs->buf, "OK") != 0)
3969 error (_("Attaching to %s failed with: %s"),
3970 target_pid_to_str (pid_to_ptid (pid)),
3973 else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE)
3974 error (_("This target does not support attaching to a process"));
3976 error (_("Attaching to %s failed"),
3977 target_pid_to_str (pid_to_ptid (pid)));
3979 set_current_inferior (remote_add_inferior (pid, 1));
3981 inferior_ptid = pid_to_ptid (pid);
3985 struct thread_info *thread;
3987 /* Get list of threads. */
3988 remote_threads_info (target);
3990 thread = first_thread_of_process (pid);
3992 inferior_ptid = thread->ptid;
3994 inferior_ptid = pid_to_ptid (pid);
3996 /* Invalidate our notion of the remote current thread. */
3997 record_currthread (minus_one_ptid);
4001 /* Now, if we have thread information, update inferior_ptid. */
4002 inferior_ptid = remote_current_thread (inferior_ptid);
4004 /* Add the main thread to the thread list. */
4005 add_thread_silent (inferior_ptid);
4008 /* Next, if the target can specify a description, read it. We do
4009 this before anything involving memory or registers. */
4010 target_find_description ();
4014 /* Use the previously fetched status. */
4015 gdb_assert (wait_status != NULL);
4017 if (target_can_async_p ())
4019 struct stop_reply *stop_reply;
4020 struct cleanup *old_chain;
4022 stop_reply = stop_reply_xmalloc ();
4023 old_chain = make_cleanup (do_stop_reply_xfree, stop_reply);
4024 remote_parse_stop_reply (wait_status, stop_reply);
4025 discard_cleanups (old_chain);
4026 push_stop_reply (stop_reply);
4028 target_async (inferior_event_handler, 0);
4032 gdb_assert (wait_status != NULL);
4033 strcpy (rs->buf, wait_status);
4034 rs->cached_wait_status = 1;
4038 gdb_assert (wait_status == NULL);
4042 extended_remote_attach (struct target_ops *ops, char *args, int from_tty)
4044 extended_remote_attach_1 (ops, args, from_tty);
4047 /* Convert hex digit A to a number. */
4052 if (a >= '0' && a <= '9')
4054 else if (a >= 'a' && a <= 'f')
4055 return a - 'a' + 10;
4056 else if (a >= 'A' && a <= 'F')
4057 return a - 'A' + 10;
4059 error (_("Reply contains invalid hex digit %d"), a);
4063 hex2bin (const char *hex, gdb_byte *bin, int count)
4067 for (i = 0; i < count; i++)
4069 if (hex[0] == 0 || hex[1] == 0)
4071 /* Hex string is short, or of uneven length.
4072 Return the count that has been converted so far. */
4075 *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]);
4081 /* Convert number NIB to a hex digit. */
4089 return 'a' + nib - 10;
4093 bin2hex (const gdb_byte *bin, char *hex, int count)
4096 /* May use a length, or a nul-terminated string as input. */
4098 count = strlen ((char *) bin);
4100 for (i = 0; i < count; i++)
4102 *hex++ = tohex ((*bin >> 4) & 0xf);
4103 *hex++ = tohex (*bin++ & 0xf);
4109 /* Check for the availability of vCont. This function should also check
4113 remote_vcont_probe (struct remote_state *rs)
4117 strcpy (rs->buf, "vCont?");
4119 getpkt (&rs->buf, &rs->buf_size, 0);
4122 /* Make sure that the features we assume are supported. */
4123 if (strncmp (buf, "vCont", 5) == 0)
4126 int support_s, support_S, support_c, support_C;
4132 rs->support_vCont_t = 0;
4133 while (p && *p == ';')
4136 if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0))
4138 else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0))
4140 else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0))
4142 else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0))
4144 else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0))
4145 rs->support_vCont_t = 1;
4147 p = strchr (p, ';');
4150 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4151 BUF will make packet_ok disable the packet. */
4152 if (!support_s || !support_S || !support_c || !support_C)
4156 packet_ok (buf, &remote_protocol_packets[PACKET_vCont]);
4159 /* Helper function for building "vCont" resumptions. Write a
4160 resumption to P. ENDP points to one-passed-the-end of the buffer
4161 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4162 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4163 resumed thread should be single-stepped and/or signalled. If PTID
4164 equals minus_one_ptid, then all threads are resumed; if PTID
4165 represents a process, then all threads of the process are resumed;
4166 the thread to be stepped and/or signalled is given in the global
4170 append_resumption (char *p, char *endp,
4171 ptid_t ptid, int step, enum target_signal siggnal)
4173 struct remote_state *rs = get_remote_state ();
4175 if (step && siggnal != TARGET_SIGNAL_0)
4176 p += xsnprintf (p, endp - p, ";S%02x", siggnal);
4178 p += xsnprintf (p, endp - p, ";s");
4179 else if (siggnal != TARGET_SIGNAL_0)
4180 p += xsnprintf (p, endp - p, ";C%02x", siggnal);
4182 p += xsnprintf (p, endp - p, ";c");
4184 if (remote_multi_process_p (rs) && ptid_is_pid (ptid))
4188 /* All (-1) threads of process. */
4189 nptid = ptid_build (ptid_get_pid (ptid), 0, -1);
4191 p += xsnprintf (p, endp - p, ":");
4192 p = write_ptid (p, endp, nptid);
4194 else if (!ptid_equal (ptid, minus_one_ptid))
4196 p += xsnprintf (p, endp - p, ":");
4197 p = write_ptid (p, endp, ptid);
4203 /* Resume the remote inferior by using a "vCont" packet. The thread
4204 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4205 resumed thread should be single-stepped and/or signalled. If PTID
4206 equals minus_one_ptid, then all threads are resumed; the thread to
4207 be stepped and/or signalled is given in the global INFERIOR_PTID.
4208 This function returns non-zero iff it resumes the inferior.
4210 This function issues a strict subset of all possible vCont commands at the
4214 remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal)
4216 struct remote_state *rs = get_remote_state ();
4220 if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN)
4221 remote_vcont_probe (rs);
4223 if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE)
4227 endp = rs->buf + get_remote_packet_size ();
4229 /* If we could generate a wider range of packets, we'd have to worry
4230 about overflowing BUF. Should there be a generic
4231 "multi-part-packet" packet? */
4233 p += xsnprintf (p, endp - p, "vCont");
4235 if (ptid_equal (ptid, magic_null_ptid))
4237 /* MAGIC_NULL_PTID means that we don't have any active threads,
4238 so we don't have any TID numbers the inferior will
4239 understand. Make sure to only send forms that do not specify
4241 p = append_resumption (p, endp, minus_one_ptid, step, siggnal);
4243 else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid))
4245 /* Resume all threads (of all processes, or of a single
4246 process), with preference for INFERIOR_PTID. This assumes
4247 inferior_ptid belongs to the set of all threads we are about
4249 if (step || siggnal != TARGET_SIGNAL_0)
4251 /* Step inferior_ptid, with or without signal. */
4252 p = append_resumption (p, endp, inferior_ptid, step, siggnal);
4255 /* And continue others without a signal. */
4256 p = append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0);
4260 /* Scheduler locking; resume only PTID. */
4261 p = append_resumption (p, endp, ptid, step, siggnal);
4264 gdb_assert (strlen (rs->buf) < get_remote_packet_size ());
4269 /* In non-stop, the stub replies to vCont with "OK". The stop
4270 reply will be reported asynchronously by means of a `%Stop'
4272 getpkt (&rs->buf, &rs->buf_size, 0);
4273 if (strcmp (rs->buf, "OK") != 0)
4274 error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf);
4280 /* Tell the remote machine to resume. */
4282 static enum target_signal last_sent_signal = TARGET_SIGNAL_0;
4284 static int last_sent_step;
4287 remote_resume (struct target_ops *ops,
4288 ptid_t ptid, int step, enum target_signal siggnal)
4290 struct remote_state *rs = get_remote_state ();
4293 last_sent_signal = siggnal;
4294 last_sent_step = step;
4296 /* Update the inferior on signals to silently pass, if they've changed. */
4297 remote_pass_signals ();
4299 /* The vCont packet doesn't need to specify threads via Hc. */
4300 /* No reverse support (yet) for vCont. */
4301 if (execution_direction != EXEC_REVERSE)
4302 if (remote_vcont_resume (ptid, step, siggnal))
4305 /* All other supported resume packets do use Hc, so set the continue
4307 if (ptid_equal (ptid, minus_one_ptid))
4308 set_continue_thread (any_thread_ptid);
4310 set_continue_thread (ptid);
4313 if (execution_direction == EXEC_REVERSE)
4315 /* We don't pass signals to the target in reverse exec mode. */
4316 if (info_verbose && siggnal != TARGET_SIGNAL_0)
4317 warning (" - Can't pass signal %d to target in reverse: ignored.\n",
4321 && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE)
4322 error (_("Remote reverse-step not supported."));
4324 && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE)
4325 error (_("Remote reverse-continue not supported."));
4327 strcpy (buf, step ? "bs" : "bc");
4329 else if (siggnal != TARGET_SIGNAL_0)
4331 buf[0] = step ? 'S' : 'C';
4332 buf[1] = tohex (((int) siggnal >> 4) & 0xf);
4333 buf[2] = tohex (((int) siggnal) & 0xf);
4337 strcpy (buf, step ? "s" : "c");
4342 /* We are about to start executing the inferior, let's register it
4343 with the event loop. NOTE: this is the one place where all the
4344 execution commands end up. We could alternatively do this in each
4345 of the execution commands in infcmd.c. */
4346 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4347 into infcmd.c in order to allow inferior function calls to work
4348 NOT asynchronously. */
4349 if (target_can_async_p ())
4350 target_async (inferior_event_handler, 0);
4352 /* We've just told the target to resume. The remote server will
4353 wait for the inferior to stop, and then send a stop reply. In
4354 the mean time, we can't start another command/query ourselves
4355 because the stub wouldn't be ready to process it. This applies
4356 only to the base all-stop protocol, however. In non-stop (which
4357 only supports vCont), the stub replies with an "OK", and is
4358 immediate able to process further serial input. */
4360 rs->waiting_for_stop_reply = 1;
4364 /* Set up the signal handler for SIGINT, while the target is
4365 executing, ovewriting the 'regular' SIGINT signal handler. */
4367 initialize_sigint_signal_handler (void)
4369 signal (SIGINT, handle_remote_sigint);
4372 /* Signal handler for SIGINT, while the target is executing. */
4374 handle_remote_sigint (int sig)
4376 signal (sig, handle_remote_sigint_twice);
4377 mark_async_signal_handler_wrapper (sigint_remote_token);
4380 /* Signal handler for SIGINT, installed after SIGINT has already been
4381 sent once. It will take effect the second time that the user sends
4384 handle_remote_sigint_twice (int sig)
4386 signal (sig, handle_remote_sigint);
4387 mark_async_signal_handler_wrapper (sigint_remote_twice_token);
4390 /* Perform the real interruption of the target execution, in response
4393 async_remote_interrupt (gdb_client_data arg)
4396 fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n");
4398 target_stop (inferior_ptid);
4401 /* Perform interrupt, if the first attempt did not succeed. Just give
4402 up on the target alltogether. */
4404 async_remote_interrupt_twice (gdb_client_data arg)
4407 fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n");
4412 /* Reinstall the usual SIGINT handlers, after the target has
4415 cleanup_sigint_signal_handler (void *dummy)
4417 signal (SIGINT, handle_sigint);
4420 /* Send ^C to target to halt it. Target will respond, and send us a
4422 static void (*ofunc) (int);
4424 /* The command line interface's stop routine. This function is installed
4425 as a signal handler for SIGINT. The first time a user requests a
4426 stop, we call remote_stop to send a break or ^C. If there is no
4427 response from the target (it didn't stop when the user requested it),
4428 we ask the user if he'd like to detach from the target. */
4430 remote_interrupt (int signo)
4432 /* If this doesn't work, try more severe steps. */
4433 signal (signo, remote_interrupt_twice);
4435 gdb_call_async_signal_handler (sigint_remote_token, 1);
4438 /* The user typed ^C twice. */
4441 remote_interrupt_twice (int signo)
4443 signal (signo, ofunc);
4444 gdb_call_async_signal_handler (sigint_remote_twice_token, 1);
4445 signal (signo, remote_interrupt);
4448 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4449 thread, all threads of a remote process, or all threads of all
4453 remote_stop_ns (ptid_t ptid)
4455 struct remote_state *rs = get_remote_state ();
4457 char *endp = rs->buf + get_remote_packet_size ();
4459 if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN)
4460 remote_vcont_probe (rs);
4462 if (!rs->support_vCont_t)
4463 error (_("Remote server does not support stopping threads"));
4465 if (ptid_equal (ptid, minus_one_ptid)
4466 || (!remote_multi_process_p (rs) && ptid_is_pid (ptid)))
4467 p += xsnprintf (p, endp - p, "vCont;t");
4472 p += xsnprintf (p, endp - p, "vCont;t:");
4474 if (ptid_is_pid (ptid))
4475 /* All (-1) threads of process. */
4476 nptid = ptid_build (ptid_get_pid (ptid), 0, -1);
4479 /* Small optimization: if we already have a stop reply for
4480 this thread, no use in telling the stub we want this
4482 if (peek_stop_reply (ptid))
4488 p = write_ptid (p, endp, nptid);
4491 /* In non-stop, we get an immediate OK reply. The stop reply will
4492 come in asynchronously by notification. */
4494 getpkt (&rs->buf, &rs->buf_size, 0);
4495 if (strcmp (rs->buf, "OK") != 0)
4496 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf);
4499 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4500 remote target. It is undefined which thread of which process
4501 reports the stop. */
4504 remote_stop_as (ptid_t ptid)
4506 struct remote_state *rs = get_remote_state ();
4508 rs->ctrlc_pending_p = 1;
4510 /* If the inferior is stopped already, but the core didn't know
4511 about it yet, just ignore the request. The cached wait status
4512 will be collected in remote_wait. */
4513 if (rs->cached_wait_status)
4516 /* Send interrupt_sequence to remote target. */
4517 send_interrupt_sequence ();
4520 /* This is the generic stop called via the target vector. When a target
4521 interrupt is requested, either by the command line or the GUI, we
4522 will eventually end up here. */
4525 remote_stop (ptid_t ptid)
4528 fprintf_unfiltered (gdb_stdlog, "remote_stop called\n");
4531 remote_stop_ns (ptid);
4533 remote_stop_as (ptid);
4536 /* Ask the user what to do when an interrupt is received. */
4539 interrupt_query (void)
4541 target_terminal_ours ();
4543 if (target_can_async_p ())
4545 signal (SIGINT, handle_sigint);
4546 deprecated_throw_reason (RETURN_QUIT);
4550 if (query (_("Interrupted while waiting for the program.\n\
4551 Give up (and stop debugging it)? ")))
4554 deprecated_throw_reason (RETURN_QUIT);
4558 target_terminal_inferior ();
4561 /* Enable/disable target terminal ownership. Most targets can use
4562 terminal groups to control terminal ownership. Remote targets are
4563 different in that explicit transfer of ownership to/from GDB/target
4567 remote_terminal_inferior (void)
4569 if (!target_async_permitted)
4570 /* Nothing to do. */
4573 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4574 idempotent. The event-loop GDB talking to an asynchronous target
4575 with a synchronous command calls this function from both
4576 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4577 transfer the terminal to the target when it shouldn't this guard
4579 if (!remote_async_terminal_ours_p)
4581 delete_file_handler (input_fd);
4582 remote_async_terminal_ours_p = 0;
4583 initialize_sigint_signal_handler ();
4584 /* NOTE: At this point we could also register our selves as the
4585 recipient of all input. Any characters typed could then be
4586 passed on down to the target. */
4590 remote_terminal_ours (void)
4592 if (!target_async_permitted)
4593 /* Nothing to do. */
4596 /* See FIXME in remote_terminal_inferior. */
4597 if (remote_async_terminal_ours_p)
4599 cleanup_sigint_signal_handler (NULL);
4600 add_file_handler (input_fd, stdin_event_handler, 0);
4601 remote_async_terminal_ours_p = 1;
4605 remote_console_output (char *msg)
4609 for (p = msg; p[0] && p[1]; p += 2)
4612 char c = fromhex (p[0]) * 16 + fromhex (p[1]);
4615 fputs_unfiltered (tb, gdb_stdtarg);
4617 gdb_flush (gdb_stdtarg);
4620 typedef struct cached_reg
4623 gdb_byte data[MAX_REGISTER_SIZE];
4626 DEF_VEC_O(cached_reg_t);
4630 struct stop_reply *next;
4634 struct target_waitstatus ws;
4636 VEC(cached_reg_t) *regcache;
4638 int stopped_by_watchpoint_p;
4639 CORE_ADDR watch_data_address;
4647 /* The list of already fetched and acknowledged stop events. */
4648 static struct stop_reply *stop_reply_queue;
4650 static struct stop_reply *
4651 stop_reply_xmalloc (void)
4653 struct stop_reply *r = XMALLOC (struct stop_reply);
4659 stop_reply_xfree (struct stop_reply *r)
4663 VEC_free (cached_reg_t, r->regcache);
4668 /* Discard all pending stop replies of inferior PID. If PID is -1,
4669 discard everything. */
4672 discard_pending_stop_replies (int pid)
4674 struct stop_reply *prev = NULL, *reply, *next;
4676 /* Discard the in-flight notification. */
4677 if (pending_stop_reply != NULL
4679 || ptid_get_pid (pending_stop_reply->ptid) == pid))
4681 stop_reply_xfree (pending_stop_reply);
4682 pending_stop_reply = NULL;
4685 /* Discard the stop replies we have already pulled with
4687 for (reply = stop_reply_queue; reply; reply = next)
4691 || ptid_get_pid (reply->ptid) == pid)
4693 if (reply == stop_reply_queue)
4694 stop_reply_queue = reply->next;
4696 prev->next = reply->next;
4698 stop_reply_xfree (reply);
4705 /* Cleanup wrapper. */
4708 do_stop_reply_xfree (void *arg)
4710 struct stop_reply *r = arg;
4711 stop_reply_xfree (r);
4714 /* Look for a queued stop reply belonging to PTID. If one is found,
4715 remove it from the queue, and return it. Returns NULL if none is
4716 found. If there are still queued events left to process, tell the
4717 event loop to get back to target_wait soon. */
4719 static struct stop_reply *
4720 queued_stop_reply (ptid_t ptid)
4722 struct stop_reply *it;
4723 struct stop_reply **it_link;
4725 it = stop_reply_queue;
4726 it_link = &stop_reply_queue;
4729 if (ptid_match (it->ptid, ptid))
4731 *it_link = it->next;
4736 it_link = &it->next;
4740 if (stop_reply_queue)
4741 /* There's still at least an event left. */
4742 mark_async_event_handler (remote_async_inferior_event_token);
4747 /* Push a fully parsed stop reply in the stop reply queue. Since we
4748 know that we now have at least one queued event left to pass to the
4749 core side, tell the event loop to get back to target_wait soon. */
4752 push_stop_reply (struct stop_reply *new_event)
4754 struct stop_reply *event;
4756 if (stop_reply_queue)
4758 for (event = stop_reply_queue;
4759 event && event->next;
4760 event = event->next)
4763 event->next = new_event;
4766 stop_reply_queue = new_event;
4768 mark_async_event_handler (remote_async_inferior_event_token);
4771 /* Returns true if we have a stop reply for PTID. */
4774 peek_stop_reply (ptid_t ptid)
4776 struct stop_reply *it;
4778 for (it = stop_reply_queue; it; it = it->next)
4779 if (ptid_equal (ptid, it->ptid))
4781 if (it->ws.kind == TARGET_WAITKIND_STOPPED)
4788 /* Parse the stop reply in BUF. Either the function succeeds, and the
4789 result is stored in EVENT, or throws an error. */
4792 remote_parse_stop_reply (char *buf, struct stop_reply *event)
4794 struct remote_arch_state *rsa = get_remote_arch_state ();
4798 event->ptid = null_ptid;
4799 event->ws.kind = TARGET_WAITKIND_IGNORE;
4800 event->ws.value.integer = 0;
4801 event->solibs_changed = 0;
4802 event->replay_event = 0;
4803 event->stopped_by_watchpoint_p = 0;
4804 event->regcache = NULL;
4809 case 'T': /* Status with PC, SP, FP, ... */
4810 /* Expedited reply, containing Signal, {regno, reg} repeat. */
4811 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
4813 n... = register number
4814 r... = register contents
4817 p = &buf[3]; /* after Txx */
4825 /* If the packet contains a register number, save it in
4826 pnum and set p1 to point to the character following it.
4827 Otherwise p1 points to p. */
4829 /* If this packet is an awatch packet, don't parse the 'a'
4830 as a register number. */
4832 if (strncmp (p, "awatch", strlen("awatch")) != 0
4833 && strncmp (p, "core", strlen ("core") != 0))
4835 /* Read the ``P'' register number. */
4836 pnum = strtol (p, &p_temp, 16);
4842 if (p1 == p) /* No register number present here. */
4844 p1 = strchr (p, ':');
4846 error (_("Malformed packet(a) (missing colon): %s\n\
4849 if (strncmp (p, "thread", p1 - p) == 0)
4850 event->ptid = read_ptid (++p1, &p);
4851 else if ((strncmp (p, "watch", p1 - p) == 0)
4852 || (strncmp (p, "rwatch", p1 - p) == 0)
4853 || (strncmp (p, "awatch", p1 - p) == 0))
4855 event->stopped_by_watchpoint_p = 1;
4856 p = unpack_varlen_hex (++p1, &addr);
4857 event->watch_data_address = (CORE_ADDR) addr;
4859 else if (strncmp (p, "library", p1 - p) == 0)
4863 while (*p_temp && *p_temp != ';')
4866 event->solibs_changed = 1;
4869 else if (strncmp (p, "replaylog", p1 - p) == 0)
4871 /* NO_HISTORY event.
4872 p1 will indicate "begin" or "end", but
4873 it makes no difference for now, so ignore it. */
4874 event->replay_event = 1;
4875 p_temp = strchr (p1 + 1, ';');
4879 else if (strncmp (p, "core", p1 - p) == 0)
4882 p = unpack_varlen_hex (++p1, &c);
4887 /* Silently skip unknown optional info. */
4888 p_temp = strchr (p1 + 1, ';');
4895 struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum);
4896 cached_reg_t cached_reg;
4901 error (_("Malformed packet(b) (missing colon): %s\n\
4907 error (_("Remote sent bad register number %s: %s\n\
4909 hex_string (pnum), p, buf);
4911 cached_reg.num = reg->regnum;
4913 fieldsize = hex2bin (p, cached_reg.data,
4914 register_size (target_gdbarch,
4917 if (fieldsize < register_size (target_gdbarch,
4919 warning (_("Remote reply is too short: %s"), buf);
4921 VEC_safe_push (cached_reg_t, event->regcache, &cached_reg);
4925 error (_("Remote register badly formatted: %s\nhere: %s"),
4930 case 'S': /* Old style status, just signal only. */
4931 if (event->solibs_changed)
4932 event->ws.kind = TARGET_WAITKIND_LOADED;
4933 else if (event->replay_event)
4934 event->ws.kind = TARGET_WAITKIND_NO_HISTORY;
4937 event->ws.kind = TARGET_WAITKIND_STOPPED;
4938 event->ws.value.sig = (enum target_signal)
4939 (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
4942 case 'W': /* Target exited. */
4949 /* GDB used to accept only 2 hex chars here. Stubs should
4950 only send more if they detect GDB supports multi-process
4952 p = unpack_varlen_hex (&buf[1], &value);
4956 /* The remote process exited. */
4957 event->ws.kind = TARGET_WAITKIND_EXITED;
4958 event->ws.value.integer = value;
4962 /* The remote process exited with a signal. */
4963 event->ws.kind = TARGET_WAITKIND_SIGNALLED;
4964 event->ws.value.sig = (enum target_signal) value;
4967 /* If no process is specified, assume inferior_ptid. */
4968 pid = ptid_get_pid (inferior_ptid);
4977 else if (strncmp (p,
4978 "process:", sizeof ("process:") - 1) == 0)
4981 p += sizeof ("process:") - 1;
4982 unpack_varlen_hex (p, &upid);
4986 error (_("unknown stop reply packet: %s"), buf);
4989 error (_("unknown stop reply packet: %s"), buf);
4990 event->ptid = pid_to_ptid (pid);
4995 if (non_stop && ptid_equal (event->ptid, null_ptid))
4996 error (_("No process or thread specified in stop reply: %s"), buf);
4999 /* When the stub wants to tell GDB about a new stop reply, it sends a
5000 stop notification (%Stop). Those can come it at any time, hence,
5001 we have to make sure that any pending putpkt/getpkt sequence we're
5002 making is finished, before querying the stub for more events with
5003 vStopped. E.g., if we started a vStopped sequence immediatelly
5004 upon receiving the %Stop notification, something like this could
5012 1.6) <-- (registers reply to step #1.3)
5014 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5017 To solve this, whenever we parse a %Stop notification sucessfully,
5018 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5019 doing whatever we were doing:
5025 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5026 2.5) <-- (registers reply to step #2.3)
5028 Eventualy after step #2.5, we return to the event loop, which
5029 notices there's an event on the
5030 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5031 associated callback --- the function below. At this point, we're
5032 always safe to start a vStopped sequence. :
5035 2.7) <-- T05 thread:2
5041 remote_get_pending_stop_replies (void)
5043 struct remote_state *rs = get_remote_state ();
5045 if (pending_stop_reply)
5048 putpkt ("vStopped");
5050 /* Now we can rely on it. */
5051 push_stop_reply (pending_stop_reply);
5052 pending_stop_reply = NULL;
5056 getpkt (&rs->buf, &rs->buf_size, 0);
5057 if (strcmp (rs->buf, "OK") == 0)
5061 struct cleanup *old_chain;
5062 struct stop_reply *stop_reply = stop_reply_xmalloc ();
5064 old_chain = make_cleanup (do_stop_reply_xfree, stop_reply);
5065 remote_parse_stop_reply (rs->buf, stop_reply);
5068 putpkt ("vStopped");
5070 if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE)
5072 /* Now we can rely on it. */
5073 discard_cleanups (old_chain);
5074 push_stop_reply (stop_reply);
5077 /* We got an unknown stop reply. */
5078 do_cleanups (old_chain);
5085 /* Called when it is decided that STOP_REPLY holds the info of the
5086 event that is to be returned to the core. This function always
5087 destroys STOP_REPLY. */
5090 process_stop_reply (struct stop_reply *stop_reply,
5091 struct target_waitstatus *status)
5095 *status = stop_reply->ws;
5096 ptid = stop_reply->ptid;
5098 /* If no thread/process was reported by the stub, assume the current
5100 if (ptid_equal (ptid, null_ptid))
5101 ptid = inferior_ptid;
5103 if (status->kind != TARGET_WAITKIND_EXITED
5104 && status->kind != TARGET_WAITKIND_SIGNALLED)
5106 /* Expedited registers. */
5107 if (stop_reply->regcache)
5109 struct regcache *regcache
5110 = get_thread_arch_regcache (ptid, target_gdbarch);
5115 VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg);
5117 regcache_raw_supply (regcache, reg->num, reg->data);
5118 VEC_free (cached_reg_t, stop_reply->regcache);
5121 remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p;
5122 remote_watch_data_address = stop_reply->watch_data_address;
5124 remote_notice_new_inferior (ptid, 0);
5125 demand_private_info (ptid)->core = stop_reply->core;
5128 stop_reply_xfree (stop_reply);
5132 /* The non-stop mode version of target_wait. */
5135 remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options)
5137 struct remote_state *rs = get_remote_state ();
5138 struct stop_reply *stop_reply;
5141 /* If in non-stop mode, get out of getpkt even if a
5142 notification is received. */
5144 ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
5151 case 'E': /* Error of some sort. */
5152 /* We're out of sync with the target now. Did it continue
5153 or not? We can't tell which thread it was in non-stop,
5154 so just ignore this. */
5155 warning (_("Remote failure reply: %s"), rs->buf);
5157 case 'O': /* Console output. */
5158 remote_console_output (rs->buf + 1);
5161 warning (_("Invalid remote reply: %s"), rs->buf);
5165 /* Acknowledge a pending stop reply that may have arrived in the
5167 if (pending_stop_reply != NULL)
5168 remote_get_pending_stop_replies ();
5170 /* If indeed we noticed a stop reply, we're done. */
5171 stop_reply = queued_stop_reply (ptid);
5172 if (stop_reply != NULL)
5173 return process_stop_reply (stop_reply, status);
5175 /* Still no event. If we're just polling for an event, then
5176 return to the event loop. */
5177 if (options & TARGET_WNOHANG)
5179 status->kind = TARGET_WAITKIND_IGNORE;
5180 return minus_one_ptid;
5183 /* Otherwise do a blocking wait. */
5184 ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
5189 /* Wait until the remote machine stops, then return, storing status in
5190 STATUS just as `wait' would. */
5193 remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options)
5195 struct remote_state *rs = get_remote_state ();
5196 ptid_t event_ptid = null_ptid;
5198 struct stop_reply *stop_reply;
5202 status->kind = TARGET_WAITKIND_IGNORE;
5203 status->value.integer = 0;
5205 stop_reply = queued_stop_reply (ptid);
5206 if (stop_reply != NULL)
5207 return process_stop_reply (stop_reply, status);
5209 if (rs->cached_wait_status)
5210 /* Use the cached wait status, but only once. */
5211 rs->cached_wait_status = 0;
5216 if (!target_is_async_p ())
5218 ofunc = signal (SIGINT, remote_interrupt);
5219 /* If the user hit C-c before this packet, or between packets,
5220 pretend that it was hit right here. */
5224 remote_interrupt (SIGINT);
5228 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5229 _never_ wait for ever -> test on target_is_async_p().
5230 However, before we do that we need to ensure that the caller
5231 knows how to take the target into/out of async mode. */
5232 ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p);
5233 if (!target_is_async_p ())
5234 signal (SIGINT, ofunc);
5239 remote_stopped_by_watchpoint_p = 0;
5241 /* We got something. */
5242 rs->waiting_for_stop_reply = 0;
5244 /* Assume that the target has acknowledged Ctrl-C unless we receive
5245 an 'F' or 'O' packet. */
5246 if (buf[0] != 'F' && buf[0] != 'O')
5247 rs->ctrlc_pending_p = 0;
5251 case 'E': /* Error of some sort. */
5252 /* We're out of sync with the target now. Did it continue or
5253 not? Not is more likely, so report a stop. */
5254 warning (_("Remote failure reply: %s"), buf);
5255 status->kind = TARGET_WAITKIND_STOPPED;
5256 status->value.sig = TARGET_SIGNAL_0;
5258 case 'F': /* File-I/O request. */
5259 remote_fileio_request (buf, rs->ctrlc_pending_p);
5260 rs->ctrlc_pending_p = 0;
5262 case 'T': case 'S': case 'X': case 'W':
5264 struct stop_reply *stop_reply;
5265 struct cleanup *old_chain;
5267 stop_reply = stop_reply_xmalloc ();
5268 old_chain = make_cleanup (do_stop_reply_xfree, stop_reply);
5269 remote_parse_stop_reply (buf, stop_reply);
5270 discard_cleanups (old_chain);
5271 event_ptid = process_stop_reply (stop_reply, status);
5274 case 'O': /* Console output. */
5275 remote_console_output (buf + 1);
5277 /* The target didn't really stop; keep waiting. */
5278 rs->waiting_for_stop_reply = 1;
5282 if (last_sent_signal != TARGET_SIGNAL_0)
5284 /* Zero length reply means that we tried 'S' or 'C' and the
5285 remote system doesn't support it. */
5286 target_terminal_ours_for_output ();
5288 ("Can't send signals to this remote system. %s not sent.\n",
5289 target_signal_to_name (last_sent_signal));
5290 last_sent_signal = TARGET_SIGNAL_0;
5291 target_terminal_inferior ();
5293 strcpy ((char *) buf, last_sent_step ? "s" : "c");
5294 putpkt ((char *) buf);
5296 /* We just told the target to resume, so a stop reply is in
5298 rs->waiting_for_stop_reply = 1;
5301 /* else fallthrough */
5303 warning (_("Invalid remote reply: %s"), buf);
5305 rs->waiting_for_stop_reply = 1;
5309 if (status->kind == TARGET_WAITKIND_IGNORE)
5311 /* Nothing interesting happened. If we're doing a non-blocking
5312 poll, we're done. Otherwise, go back to waiting. */
5313 if (options & TARGET_WNOHANG)
5314 return minus_one_ptid;
5318 else if (status->kind != TARGET_WAITKIND_EXITED
5319 && status->kind != TARGET_WAITKIND_SIGNALLED)
5321 if (!ptid_equal (event_ptid, null_ptid))
5322 record_currthread (event_ptid);
5324 event_ptid = inferior_ptid;
5327 /* A process exit. Invalidate our notion of current thread. */
5328 record_currthread (minus_one_ptid);
5333 /* Wait until the remote machine stops, then return, storing status in
5334 STATUS just as `wait' would. */
5337 remote_wait (struct target_ops *ops,
5338 ptid_t ptid, struct target_waitstatus *status, int options)
5343 event_ptid = remote_wait_ns (ptid, status, options);
5345 event_ptid = remote_wait_as (ptid, status, options);
5347 if (target_can_async_p ())
5349 /* If there are are events left in the queue tell the event loop
5351 if (stop_reply_queue)
5352 mark_async_event_handler (remote_async_inferior_event_token);
5358 /* Fetch a single register using a 'p' packet. */
5361 fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg)
5363 struct remote_state *rs = get_remote_state ();
5365 char regp[MAX_REGISTER_SIZE];
5368 if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE)
5371 if (reg->pnum == -1)
5376 p += hexnumstr (p, reg->pnum);
5379 getpkt (&rs->buf, &rs->buf_size, 0);
5383 switch (packet_ok (buf, &remote_protocol_packets[PACKET_p]))
5387 case PACKET_UNKNOWN:
5390 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5391 gdbarch_register_name (get_regcache_arch (regcache),
5396 /* If this register is unfetchable, tell the regcache. */
5399 regcache_raw_supply (regcache, reg->regnum, NULL);
5403 /* Otherwise, parse and supply the value. */
5409 error (_("fetch_register_using_p: early buf termination"));
5411 regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]);
5414 regcache_raw_supply (regcache, reg->regnum, regp);
5418 /* Fetch the registers included in the target's 'g' packet. */
5421 send_g_packet (void)
5423 struct remote_state *rs = get_remote_state ();
5426 sprintf (rs->buf, "g");
5427 remote_send (&rs->buf, &rs->buf_size);
5429 /* We can get out of synch in various cases. If the first character
5430 in the buffer is not a hex character, assume that has happened
5431 and try to fetch another packet to read. */
5432 while ((rs->buf[0] < '0' || rs->buf[0] > '9')
5433 && (rs->buf[0] < 'A' || rs->buf[0] > 'F')
5434 && (rs->buf[0] < 'a' || rs->buf[0] > 'f')
5435 && rs->buf[0] != 'x') /* New: unavailable register value. */
5438 fprintf_unfiltered (gdb_stdlog,
5439 "Bad register packet; fetching a new packet\n");
5440 getpkt (&rs->buf, &rs->buf_size, 0);
5443 buf_len = strlen (rs->buf);
5445 /* Sanity check the received packet. */
5446 if (buf_len % 2 != 0)
5447 error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf);
5453 process_g_packet (struct regcache *regcache)
5455 struct gdbarch *gdbarch = get_regcache_arch (regcache);
5456 struct remote_state *rs = get_remote_state ();
5457 struct remote_arch_state *rsa = get_remote_arch_state ();
5462 buf_len = strlen (rs->buf);
5464 /* Further sanity checks, with knowledge of the architecture. */
5465 if (buf_len > 2 * rsa->sizeof_g_packet)
5466 error (_("Remote 'g' packet reply is too long: %s"), rs->buf);
5468 /* Save the size of the packet sent to us by the target. It is used
5469 as a heuristic when determining the max size of packets that the
5470 target can safely receive. */
5471 if (rsa->actual_register_packet_size == 0)
5472 rsa->actual_register_packet_size = buf_len;
5474 /* If this is smaller than we guessed the 'g' packet would be,
5475 update our records. A 'g' reply that doesn't include a register's
5476 value implies either that the register is not available, or that
5477 the 'p' packet must be used. */
5478 if (buf_len < 2 * rsa->sizeof_g_packet)
5480 rsa->sizeof_g_packet = buf_len / 2;
5482 for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
5484 if (rsa->regs[i].pnum == -1)
5487 if (rsa->regs[i].offset >= rsa->sizeof_g_packet)
5488 rsa->regs[i].in_g_packet = 0;
5490 rsa->regs[i].in_g_packet = 1;
5494 regs = alloca (rsa->sizeof_g_packet);
5496 /* Unimplemented registers read as all bits zero. */
5497 memset (regs, 0, rsa->sizeof_g_packet);
5499 /* Reply describes registers byte by byte, each byte encoded as two
5500 hex characters. Suck them all up, then supply them to the
5501 register cacheing/storage mechanism. */
5504 for (i = 0; i < rsa->sizeof_g_packet; i++)
5506 if (p[0] == 0 || p[1] == 0)
5507 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5508 internal_error (__FILE__, __LINE__,
5509 "unexpected end of 'g' packet reply");
5511 if (p[0] == 'x' && p[1] == 'x')
5512 regs[i] = 0; /* 'x' */
5514 regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
5520 for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
5522 struct packet_reg *r = &rsa->regs[i];
5525 if (r->offset * 2 >= strlen (rs->buf))
5526 /* This shouldn't happen - we adjusted in_g_packet above. */
5527 internal_error (__FILE__, __LINE__,
5528 "unexpected end of 'g' packet reply");
5529 else if (rs->buf[r->offset * 2] == 'x')
5531 gdb_assert (r->offset * 2 < strlen (rs->buf));
5532 /* The register isn't available, mark it as such (at
5533 the same time setting the value to zero). */
5534 regcache_raw_supply (regcache, r->regnum, NULL);
5537 regcache_raw_supply (regcache, r->regnum,
5545 fetch_registers_using_g (struct regcache *regcache)
5548 process_g_packet (regcache);
5552 remote_fetch_registers (struct target_ops *ops,
5553 struct regcache *regcache, int regnum)
5555 struct remote_arch_state *rsa = get_remote_arch_state ();
5558 set_general_thread (inferior_ptid);
5562 struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum);
5563 gdb_assert (reg != NULL);
5565 /* If this register might be in the 'g' packet, try that first -
5566 we are likely to read more than one register. If this is the
5567 first 'g' packet, we might be overly optimistic about its
5568 contents, so fall back to 'p'. */
5569 if (reg->in_g_packet)
5571 fetch_registers_using_g (regcache);
5572 if (reg->in_g_packet)
5576 if (fetch_register_using_p (regcache, reg))
5579 /* This register is not available. */
5580 regcache_raw_supply (regcache, reg->regnum, NULL);
5585 fetch_registers_using_g (regcache);
5587 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
5588 if (!rsa->regs[i].in_g_packet)
5589 if (!fetch_register_using_p (regcache, &rsa->regs[i]))
5591 /* This register is not available. */
5592 regcache_raw_supply (regcache, i, NULL);
5596 /* Prepare to store registers. Since we may send them all (using a
5597 'G' request), we have to read out the ones we don't want to change
5601 remote_prepare_to_store (struct regcache *regcache)
5603 struct remote_arch_state *rsa = get_remote_arch_state ();
5605 gdb_byte buf[MAX_REGISTER_SIZE];
5607 /* Make sure the entire registers array is valid. */
5608 switch (remote_protocol_packets[PACKET_P].support)
5610 case PACKET_DISABLE:
5611 case PACKET_SUPPORT_UNKNOWN:
5612 /* Make sure all the necessary registers are cached. */
5613 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
5614 if (rsa->regs[i].in_g_packet)
5615 regcache_raw_read (regcache, rsa->regs[i].regnum, buf);
5622 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
5623 packet was not recognized. */
5626 store_register_using_P (const struct regcache *regcache,
5627 struct packet_reg *reg)
5629 struct gdbarch *gdbarch = get_regcache_arch (regcache);
5630 struct remote_state *rs = get_remote_state ();
5631 /* Try storing a single register. */
5632 char *buf = rs->buf;
5633 gdb_byte regp[MAX_REGISTER_SIZE];
5636 if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE)
5639 if (reg->pnum == -1)
5642 xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0));
5643 p = buf + strlen (buf);
5644 regcache_raw_collect (regcache, reg->regnum, regp);
5645 bin2hex (regp, p, register_size (gdbarch, reg->regnum));
5647 getpkt (&rs->buf, &rs->buf_size, 0);
5649 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P]))
5654 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
5655 gdbarch_register_name (gdbarch, reg->regnum), rs->buf);
5656 case PACKET_UNKNOWN:
5659 internal_error (__FILE__, __LINE__, _("Bad result from packet_ok"));
5663 /* Store register REGNUM, or all registers if REGNUM == -1, from the
5664 contents of the register cache buffer. FIXME: ignores errors. */
5667 store_registers_using_G (const struct regcache *regcache)
5669 struct remote_state *rs = get_remote_state ();
5670 struct remote_arch_state *rsa = get_remote_arch_state ();
5674 /* Extract all the registers in the regcache copying them into a
5678 regs = alloca (rsa->sizeof_g_packet);
5679 memset (regs, 0, rsa->sizeof_g_packet);
5680 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
5682 struct packet_reg *r = &rsa->regs[i];
5684 regcache_raw_collect (regcache, r->regnum, regs + r->offset);
5688 /* Command describes registers byte by byte,
5689 each byte encoded as two hex characters. */
5692 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
5694 bin2hex (regs, p, rsa->sizeof_g_packet);
5696 getpkt (&rs->buf, &rs->buf_size, 0);
5697 if (packet_check_result (rs->buf) == PACKET_ERROR)
5698 error (_("Could not write registers; remote failure reply '%s'"),
5702 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
5703 of the register cache buffer. FIXME: ignores errors. */
5706 remote_store_registers (struct target_ops *ops,
5707 struct regcache *regcache, int regnum)
5709 struct remote_arch_state *rsa = get_remote_arch_state ();
5712 set_general_thread (inferior_ptid);
5716 struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum);
5717 gdb_assert (reg != NULL);
5719 /* Always prefer to store registers using the 'P' packet if
5720 possible; we often change only a small number of registers.
5721 Sometimes we change a larger number; we'd need help from a
5722 higher layer to know to use 'G'. */
5723 if (store_register_using_P (regcache, reg))
5726 /* For now, don't complain if we have no way to write the
5727 register. GDB loses track of unavailable registers too
5728 easily. Some day, this may be an error. We don't have
5729 any way to read the register, either... */
5730 if (!reg->in_g_packet)
5733 store_registers_using_G (regcache);
5737 store_registers_using_G (regcache);
5739 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
5740 if (!rsa->regs[i].in_g_packet)
5741 if (!store_register_using_P (regcache, &rsa->regs[i]))
5742 /* See above for why we do not issue an error here. */
5747 /* Return the number of hex digits in num. */
5750 hexnumlen (ULONGEST num)
5754 for (i = 0; num != 0; i++)
5760 /* Set BUF to the minimum number of hex digits representing NUM. */
5763 hexnumstr (char *buf, ULONGEST num)
5765 int len = hexnumlen (num);
5766 return hexnumnstr (buf, num, len);
5770 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
5773 hexnumnstr (char *buf, ULONGEST num, int width)
5779 for (i = width - 1; i >= 0; i--)
5781 buf[i] = "0123456789abcdef"[(num & 0xf)];
5788 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
5791 remote_address_masked (CORE_ADDR addr)
5793 int address_size = remote_address_size;
5794 /* If "remoteaddresssize" was not set, default to target address size. */
5796 address_size = gdbarch_addr_bit (target_gdbarch);
5798 if (address_size > 0
5799 && address_size < (sizeof (ULONGEST) * 8))
5801 /* Only create a mask when that mask can safely be constructed
5802 in a ULONGEST variable. */
5804 mask = (mask << address_size) - 1;
5810 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
5811 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
5812 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
5813 (which may be more than *OUT_LEN due to escape characters). The
5814 total number of bytes in the output buffer will be at most
5818 remote_escape_output (const gdb_byte *buffer, int len,
5819 gdb_byte *out_buf, int *out_len,
5822 int input_index, output_index;
5825 for (input_index = 0; input_index < len; input_index++)
5827 gdb_byte b = buffer[input_index];
5829 if (b == '$' || b == '#' || b == '}')
5831 /* These must be escaped. */
5832 if (output_index + 2 > out_maxlen)
5834 out_buf[output_index++] = '}';
5835 out_buf[output_index++] = b ^ 0x20;
5839 if (output_index + 1 > out_maxlen)
5841 out_buf[output_index++] = b;
5845 *out_len = input_index;
5846 return output_index;
5849 /* Convert BUFFER, escaped data LEN bytes long, into binary data
5850 in OUT_BUF. Return the number of bytes written to OUT_BUF.
5851 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
5853 This function reverses remote_escape_output. It allows more
5854 escaped characters than that function does, in particular because
5855 '*' must be escaped to avoid the run-length encoding processing
5856 in reading packets. */
5859 remote_unescape_input (const gdb_byte *buffer, int len,
5860 gdb_byte *out_buf, int out_maxlen)
5862 int input_index, output_index;
5867 for (input_index = 0; input_index < len; input_index++)
5869 gdb_byte b = buffer[input_index];
5871 if (output_index + 1 > out_maxlen)
5873 warning (_("Received too much data from remote target;"
5874 " ignoring overflow."));
5875 return output_index;
5880 out_buf[output_index++] = b ^ 0x20;
5886 out_buf[output_index++] = b;
5890 error (_("Unmatched escape character in target response."));
5892 return output_index;
5895 /* Determine whether the remote target supports binary downloading.
5896 This is accomplished by sending a no-op memory write of zero length
5897 to the target at the specified address. It does not suffice to send
5898 the whole packet, since many stubs strip the eighth bit and
5899 subsequently compute a wrong checksum, which causes real havoc with
5902 NOTE: This can still lose if the serial line is not eight-bit
5903 clean. In cases like this, the user should clear "remote
5907 check_binary_download (CORE_ADDR addr)
5909 struct remote_state *rs = get_remote_state ();
5911 switch (remote_protocol_packets[PACKET_X].support)
5913 case PACKET_DISABLE:
5917 case PACKET_SUPPORT_UNKNOWN:
5923 p += hexnumstr (p, (ULONGEST) addr);
5925 p += hexnumstr (p, (ULONGEST) 0);
5929 putpkt_binary (rs->buf, (int) (p - rs->buf));
5930 getpkt (&rs->buf, &rs->buf_size, 0);
5932 if (rs->buf[0] == '\0')
5935 fprintf_unfiltered (gdb_stdlog,
5936 "binary downloading NOT suppported by target\n");
5937 remote_protocol_packets[PACKET_X].support = PACKET_DISABLE;
5942 fprintf_unfiltered (gdb_stdlog,
5943 "binary downloading suppported by target\n");
5944 remote_protocol_packets[PACKET_X].support = PACKET_ENABLE;
5951 /* Write memory data directly to the remote machine.
5952 This does not inform the data cache; the data cache uses this.
5953 HEADER is the starting part of the packet.
5954 MEMADDR is the address in the remote memory space.
5955 MYADDR is the address of the buffer in our space.
5956 LEN is the number of bytes.
5957 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
5958 should send data as binary ('X'), or hex-encoded ('M').
5960 The function creates packet of the form
5961 <HEADER><ADDRESS>,<LENGTH>:<DATA>
5963 where encoding of <DATA> is termined by PACKET_FORMAT.
5965 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
5968 Returns the number of bytes transferred, or 0 (setting errno) for
5969 error. Only transfer a single packet. */
5972 remote_write_bytes_aux (const char *header, CORE_ADDR memaddr,
5973 const gdb_byte *myaddr, int len,
5974 char packet_format, int use_length)
5976 struct remote_state *rs = get_remote_state ();
5986 if (packet_format != 'X' && packet_format != 'M')
5987 internal_error (__FILE__, __LINE__,
5988 "remote_write_bytes_aux: bad packet format");
5993 payload_size = get_memory_write_packet_size ();
5995 /* The packet buffer will be large enough for the payload;
5996 get_memory_packet_size ensures this. */
5999 /* Compute the size of the actual payload by subtracting out the
6000 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
6002 payload_size -= strlen ("$,:#NN");
6004 /* The comma won't be used. */
6006 header_length = strlen (header);
6007 payload_size -= header_length;
6008 payload_size -= hexnumlen (memaddr);
6010 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6012 strcat (rs->buf, header);
6013 p = rs->buf + strlen (header);
6015 /* Compute a best guess of the number of bytes actually transfered. */
6016 if (packet_format == 'X')
6018 /* Best guess at number of bytes that will fit. */
6019 todo = min (len, payload_size);
6021 payload_size -= hexnumlen (todo);
6022 todo = min (todo, payload_size);
6026 /* Num bytes that will fit. */
6027 todo = min (len, payload_size / 2);
6029 payload_size -= hexnumlen (todo);
6030 todo = min (todo, payload_size / 2);
6034 internal_error (__FILE__, __LINE__,
6035 _("minumum packet size too small to write data"));
6037 /* If we already need another packet, then try to align the end
6038 of this packet to a useful boundary. */
6039 if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len)
6040 todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr;
6042 /* Append "<memaddr>". */
6043 memaddr = remote_address_masked (memaddr);
6044 p += hexnumstr (p, (ULONGEST) memaddr);
6051 /* Append <len>. Retain the location/size of <len>. It may need to
6052 be adjusted once the packet body has been created. */
6054 plenlen = hexnumstr (p, (ULONGEST) todo);
6062 /* Append the packet body. */
6063 if (packet_format == 'X')
6065 /* Binary mode. Send target system values byte by byte, in
6066 increasing byte addresses. Only escape certain critical
6068 payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes,
6071 /* If not all TODO bytes fit, then we'll need another packet. Make
6072 a second try to keep the end of the packet aligned. Don't do
6073 this if the packet is tiny. */
6074 if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES)
6078 new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1))
6080 if (new_nr_bytes != nr_bytes)
6081 payload_length = remote_escape_output (myaddr, new_nr_bytes,
6086 p += payload_length;
6087 if (use_length && nr_bytes < todo)
6089 /* Escape chars have filled up the buffer prematurely,
6090 and we have actually sent fewer bytes than planned.
6091 Fix-up the length field of the packet. Use the same
6092 number of characters as before. */
6093 plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen);
6094 *plen = ':'; /* overwrite \0 from hexnumnstr() */
6099 /* Normal mode: Send target system values byte by byte, in
6100 increasing byte addresses. Each byte is encoded as a two hex
6102 nr_bytes = bin2hex (myaddr, p, todo);
6106 putpkt_binary (rs->buf, (int) (p - rs->buf));
6107 getpkt (&rs->buf, &rs->buf_size, 0);
6109 if (rs->buf[0] == 'E')
6111 /* There is no correspondance between what the remote protocol
6112 uses for errors and errno codes. We would like a cleaner way
6113 of representing errors (big enough to include errno codes,
6114 bfd_error codes, and others). But for now just return EIO. */
6119 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6120 fewer bytes than we'd planned. */
6124 /* Write memory data directly to the remote machine.
6125 This does not inform the data cache; the data cache uses this.
6126 MEMADDR is the address in the remote memory space.
6127 MYADDR is the address of the buffer in our space.
6128 LEN is the number of bytes.
6130 Returns number of bytes transferred, or 0 (setting errno) for
6131 error. Only transfer a single packet. */
6134 remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len)
6136 char *packet_format = 0;
6138 /* Check whether the target supports binary download. */
6139 check_binary_download (memaddr);
6141 switch (remote_protocol_packets[PACKET_X].support)
6144 packet_format = "X";
6146 case PACKET_DISABLE:
6147 packet_format = "M";
6149 case PACKET_SUPPORT_UNKNOWN:
6150 internal_error (__FILE__, __LINE__,
6151 _("remote_write_bytes: bad internal state"));
6153 internal_error (__FILE__, __LINE__, _("bad switch"));
6156 return remote_write_bytes_aux (packet_format,
6157 memaddr, myaddr, len, packet_format[0], 1);
6160 /* Read memory data directly from the remote machine.
6161 This does not use the data cache; the data cache uses this.
6162 MEMADDR is the address in the remote memory space.
6163 MYADDR is the address of the buffer in our space.
6164 LEN is the number of bytes.
6166 Returns number of bytes transferred, or 0 for error. */
6168 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
6169 remote targets) shouldn't attempt to read the entire buffer.
6170 Instead it should read a single packet worth of data and then
6171 return the byte size of that packet to the caller. The caller (its
6172 caller and its callers caller ;-) already contains code for
6173 handling partial reads. */
6176 remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
6178 struct remote_state *rs = get_remote_state ();
6179 int max_buf_size; /* Max size of packet output buffer. */
6185 max_buf_size = get_memory_read_packet_size ();
6186 /* The packet buffer will be large enough for the payload;
6187 get_memory_packet_size ensures this. */
6196 todo = min (len, max_buf_size / 2); /* num bytes that will fit */
6198 /* construct "m"<memaddr>","<len>" */
6199 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
6200 memaddr = remote_address_masked (memaddr);
6203 p += hexnumstr (p, (ULONGEST) memaddr);
6205 p += hexnumstr (p, (ULONGEST) todo);
6209 getpkt (&rs->buf, &rs->buf_size, 0);
6211 if (rs->buf[0] == 'E'
6212 && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2])
6213 && rs->buf[3] == '\0')
6215 /* There is no correspondance between what the remote
6216 protocol uses for errors and errno codes. We would like
6217 a cleaner way of representing errors (big enough to
6218 include errno codes, bfd_error codes, and others). But
6219 for now just return EIO. */
6224 /* Reply describes memory byte by byte,
6225 each byte encoded as two hex characters. */
6228 if ((i = hex2bin (p, myaddr, todo)) < todo)
6230 /* Reply is short. This means that we were able to read
6231 only part of what we wanted to. */
6232 return i + (origlen - len);
6242 /* Remote notification handler. */
6245 handle_notification (char *buf, size_t length)
6247 if (strncmp (buf, "Stop:", 5) == 0)
6249 if (pending_stop_reply)
6251 /* We've already parsed the in-flight stop-reply, but the
6252 stub for some reason thought we didn't, possibly due to
6253 timeout on its side. Just ignore it. */
6255 fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n");
6259 struct cleanup *old_chain;
6260 struct stop_reply *reply = stop_reply_xmalloc ();
6261 old_chain = make_cleanup (do_stop_reply_xfree, reply);
6263 remote_parse_stop_reply (buf + 5, reply);
6265 discard_cleanups (old_chain);
6267 /* Be careful to only set it after parsing, since an error
6268 may be thrown then. */
6269 pending_stop_reply = reply;
6271 /* Notify the event loop there's a stop reply to acknowledge
6272 and that there may be more events to fetch. */
6273 mark_async_event_handler (remote_async_get_pending_events_token);
6276 fprintf_unfiltered (gdb_stdlog, "stop notification captured\n");
6280 /* We ignore notifications we don't recognize, for compatibility
6281 with newer stubs. */
6286 /* Read or write LEN bytes from inferior memory at MEMADDR,
6287 transferring to or from debugger address BUFFER. Write to inferior
6288 if SHOULD_WRITE is nonzero. Returns length of data written or
6289 read; 0 for error. TARGET is unused. */
6292 remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len,
6293 int should_write, struct mem_attrib *attrib,
6294 struct target_ops *target)
6298 set_general_thread (inferior_ptid);
6301 res = remote_write_bytes (mem_addr, buffer, mem_len);
6303 res = remote_read_bytes (mem_addr, buffer, mem_len);
6308 /* Sends a packet with content determined by the printf format string
6309 FORMAT and the remaining arguments, then gets the reply. Returns
6310 whether the packet was a success, a failure, or unknown. */
6312 static enum packet_result
6313 remote_send_printf (const char *format, ...)
6315 struct remote_state *rs = get_remote_state ();
6316 int max_size = get_remote_packet_size ();
6319 va_start (ap, format);
6322 if (vsnprintf (rs->buf, max_size, format, ap) >= max_size)
6323 internal_error (__FILE__, __LINE__, "Too long remote packet.");
6325 if (putpkt (rs->buf) < 0)
6326 error (_("Communication problem with target."));
6329 getpkt (&rs->buf, &rs->buf_size, 0);
6331 return packet_check_result (rs->buf);
6335 restore_remote_timeout (void *p)
6337 int value = *(int *)p;
6338 remote_timeout = value;
6341 /* Flash writing can take quite some time. We'll set
6342 effectively infinite timeout for flash operations.
6343 In future, we'll need to decide on a better approach. */
6344 static const int remote_flash_timeout = 1000;
6347 remote_flash_erase (struct target_ops *ops,
6348 ULONGEST address, LONGEST length)
6350 int addr_size = gdbarch_addr_bit (target_gdbarch) / 8;
6351 int saved_remote_timeout = remote_timeout;
6352 enum packet_result ret;
6354 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
6355 &saved_remote_timeout);
6356 remote_timeout = remote_flash_timeout;
6358 ret = remote_send_printf ("vFlashErase:%s,%s",
6359 phex (address, addr_size),
6363 case PACKET_UNKNOWN:
6364 error (_("Remote target does not support flash erase"));
6366 error (_("Error erasing flash with vFlashErase packet"));
6371 do_cleanups (back_to);
6375 remote_flash_write (struct target_ops *ops,
6376 ULONGEST address, LONGEST length,
6377 const gdb_byte *data)
6379 int saved_remote_timeout = remote_timeout;
6381 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
6382 &saved_remote_timeout);
6384 remote_timeout = remote_flash_timeout;
6385 ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0);
6386 do_cleanups (back_to);
6392 remote_flash_done (struct target_ops *ops)
6394 int saved_remote_timeout = remote_timeout;
6396 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
6397 &saved_remote_timeout);
6399 remote_timeout = remote_flash_timeout;
6400 ret = remote_send_printf ("vFlashDone");
6401 do_cleanups (back_to);
6405 case PACKET_UNKNOWN:
6406 error (_("Remote target does not support vFlashDone"));
6408 error (_("Error finishing flash operation"));
6415 remote_files_info (struct target_ops *ignore)
6417 puts_filtered ("Debugging a target over a serial line.\n");
6420 /* Stuff for dealing with the packets which are part of this protocol.
6421 See comment at top of file for details. */
6423 /* Read a single character from the remote end. */
6426 readchar (int timeout)
6430 ch = serial_readchar (remote_desc, timeout);
6435 switch ((enum serial_rc) ch)
6439 error (_("Remote connection closed"));
6442 perror_with_name (_("Remote communication error"));
6444 case SERIAL_TIMEOUT:
6450 /* Send the command in *BUF to the remote machine, and read the reply
6451 into *BUF. Report an error if we get an error reply. Resize
6452 *BUF using xrealloc if necessary to hold the result, and update
6456 remote_send (char **buf,
6460 getpkt (buf, sizeof_buf, 0);
6462 if ((*buf)[0] == 'E')
6463 error (_("Remote failure reply: %s"), *buf);
6466 /* Return a pointer to an xmalloc'ed string representing an escaped
6467 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6468 etc. The caller is responsible for releasing the returned
6472 escape_buffer (const char *buf, int n)
6474 struct cleanup *old_chain;
6475 struct ui_file *stb;
6478 stb = mem_fileopen ();
6479 old_chain = make_cleanup_ui_file_delete (stb);
6481 fputstrn_unfiltered (buf, n, 0, stb);
6482 str = ui_file_xstrdup (stb, NULL);
6483 do_cleanups (old_chain);
6487 /* Display a null-terminated packet on stdout, for debugging, using C
6491 print_packet (char *buf)
6493 puts_filtered ("\"");
6494 fputstr_filtered (buf, '"', gdb_stdout);
6495 puts_filtered ("\"");
6501 return putpkt_binary (buf, strlen (buf));
6504 /* Send a packet to the remote machine, with error checking. The data
6505 of the packet is in BUF. The string in BUF can be at most
6506 get_remote_packet_size () - 5 to account for the $, # and checksum,
6507 and for a possible /0 if we are debugging (remote_debug) and want
6508 to print the sent packet as a string. */
6511 putpkt_binary (char *buf, int cnt)
6513 struct remote_state *rs = get_remote_state ();
6515 unsigned char csum = 0;
6516 char *buf2 = alloca (cnt + 6);
6522 /* Catch cases like trying to read memory or listing threads while
6523 we're waiting for a stop reply. The remote server wouldn't be
6524 ready to handle this request, so we'd hang and timeout. We don't
6525 have to worry about this in synchronous mode, because in that
6526 case it's not possible to issue a command while the target is
6527 running. This is not a problem in non-stop mode, because in that
6528 case, the stub is always ready to process serial input. */
6529 if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply)
6530 error (_("Cannot execute this command while the target is running."));
6532 /* We're sending out a new packet. Make sure we don't look at a
6533 stale cached response. */
6534 rs->cached_wait_status = 0;
6536 /* Copy the packet into buffer BUF2, encapsulating it
6537 and giving it a checksum. */
6542 for (i = 0; i < cnt; i++)
6548 *p++ = tohex ((csum >> 4) & 0xf);
6549 *p++ = tohex (csum & 0xf);
6551 /* Send it over and over until we get a positive ack. */
6555 int started_error_output = 0;
6559 struct cleanup *old_chain;
6563 str = escape_buffer (buf2, p - buf2);
6564 old_chain = make_cleanup (xfree, str);
6565 fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str);
6566 gdb_flush (gdb_stdlog);
6567 do_cleanups (old_chain);
6569 if (serial_write (remote_desc, buf2, p - buf2))
6570 perror_with_name (_("putpkt: write failed"));
6572 /* If this is a no acks version of the remote protocol, send the
6573 packet and move on. */
6577 /* Read until either a timeout occurs (-2) or '+' is read.
6578 Handle any notification that arrives in the mean time. */
6581 ch = readchar (remote_timeout);
6589 case SERIAL_TIMEOUT:
6592 if (started_error_output)
6594 putchar_unfiltered ('\n');
6595 started_error_output = 0;
6604 fprintf_unfiltered (gdb_stdlog, "Ack\n");
6608 fprintf_unfiltered (gdb_stdlog, "Nak\n");
6609 case SERIAL_TIMEOUT:
6613 break; /* Retransmit buffer. */
6617 fprintf_unfiltered (gdb_stdlog,
6618 "Packet instead of Ack, ignoring it\n");
6619 /* It's probably an old response sent because an ACK
6620 was lost. Gobble up the packet and ack it so it
6621 doesn't get retransmitted when we resend this
6624 serial_write (remote_desc, "+", 1);
6625 continue; /* Now, go look for +. */
6632 /* If we got a notification, handle it, and go back to looking
6634 /* We've found the start of a notification. Now
6635 collect the data. */
6636 val = read_frame (&rs->buf, &rs->buf_size);
6641 struct cleanup *old_chain;
6644 str = escape_buffer (rs->buf, val);
6645 old_chain = make_cleanup (xfree, str);
6646 fprintf_unfiltered (gdb_stdlog,
6647 " Notification received: %s\n",
6649 do_cleanups (old_chain);
6651 handle_notification (rs->buf, val);
6652 /* We're in sync now, rewait for the ack. */
6659 if (!started_error_output)
6661 started_error_output = 1;
6662 fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
6664 fputc_unfiltered (ch & 0177, gdb_stdlog);
6665 fprintf_unfiltered (gdb_stdlog, "%s", rs->buf);
6674 if (!started_error_output)
6676 started_error_output = 1;
6677 fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
6679 fputc_unfiltered (ch & 0177, gdb_stdlog);
6683 break; /* Here to retransmit. */
6687 /* This is wrong. If doing a long backtrace, the user should be
6688 able to get out next time we call QUIT, without anything as
6689 violent as interrupt_query. If we want to provide a way out of
6690 here without getting to the next QUIT, it should be based on
6691 hitting ^C twice as in remote_wait. */
6702 /* Come here after finding the start of a frame when we expected an
6703 ack. Do our best to discard the rest of this packet. */
6712 c = readchar (remote_timeout);
6715 case SERIAL_TIMEOUT:
6716 /* Nothing we can do. */
6719 /* Discard the two bytes of checksum and stop. */
6720 c = readchar (remote_timeout);
6722 c = readchar (remote_timeout);
6725 case '*': /* Run length encoding. */
6726 /* Discard the repeat count. */
6727 c = readchar (remote_timeout);
6732 /* A regular character. */
6738 /* Come here after finding the start of the frame. Collect the rest
6739 into *BUF, verifying the checksum, length, and handling run-length
6740 compression. NUL terminate the buffer. If there is not enough room,
6741 expand *BUF using xrealloc.
6743 Returns -1 on error, number of characters in buffer (ignoring the
6744 trailing NULL) on success. (could be extended to return one of the
6745 SERIAL status indications). */
6748 read_frame (char **buf_p,
6755 struct remote_state *rs = get_remote_state ();
6762 c = readchar (remote_timeout);
6765 case SERIAL_TIMEOUT:
6767 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog);
6771 fputs_filtered ("Saw new packet start in middle of old one\n",
6773 return -1; /* Start a new packet, count retries. */
6776 unsigned char pktcsum;
6782 check_0 = readchar (remote_timeout);
6784 check_1 = readchar (remote_timeout);
6786 if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT)
6789 fputs_filtered ("Timeout in checksum, retrying\n",
6793 else if (check_0 < 0 || check_1 < 0)
6796 fputs_filtered ("Communication error in checksum\n",
6801 /* Don't recompute the checksum; with no ack packets we
6802 don't have any way to indicate a packet retransmission
6807 pktcsum = (fromhex (check_0) << 4) | fromhex (check_1);
6808 if (csum == pktcsum)
6813 struct cleanup *old_chain;
6816 str = escape_buffer (buf, bc);
6817 old_chain = make_cleanup (xfree, str);
6818 fprintf_unfiltered (gdb_stdlog,
6820 Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
6821 pktcsum, csum, str);
6822 do_cleanups (old_chain);
6824 /* Number of characters in buffer ignoring trailing
6828 case '*': /* Run length encoding. */
6833 c = readchar (remote_timeout);
6835 repeat = c - ' ' + 3; /* Compute repeat count. */
6837 /* The character before ``*'' is repeated. */
6839 if (repeat > 0 && repeat <= 255 && bc > 0)
6841 if (bc + repeat - 1 >= *sizeof_buf - 1)
6843 /* Make some more room in the buffer. */
6844 *sizeof_buf += repeat;
6845 *buf_p = xrealloc (*buf_p, *sizeof_buf);
6849 memset (&buf[bc], buf[bc - 1], repeat);
6855 printf_filtered (_("Invalid run length encoding: %s\n"), buf);
6859 if (bc >= *sizeof_buf - 1)
6861 /* Make some more room in the buffer. */
6863 *buf_p = xrealloc (*buf_p, *sizeof_buf);
6874 /* Read a packet from the remote machine, with error checking, and
6875 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6876 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6877 rather than timing out; this is used (in synchronous mode) to wait
6878 for a target that is is executing user code to stop. */
6879 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
6880 don't have to change all the calls to getpkt to deal with the
6881 return value, because at the moment I don't know what the right
6882 thing to do it for those. */
6890 timed_out = getpkt_sane (buf, sizeof_buf, forever);
6894 /* Read a packet from the remote machine, with error checking, and
6895 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6896 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6897 rather than timing out; this is used (in synchronous mode) to wait
6898 for a target that is is executing user code to stop. If FOREVER ==
6899 0, this function is allowed to time out gracefully and return an
6900 indication of this to the caller. Otherwise return the number of
6901 bytes read. If EXPECTING_NOTIF, consider receiving a notification
6902 enough reason to return to the caller. */
6905 getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever,
6906 int expecting_notif)
6908 struct remote_state *rs = get_remote_state ();
6914 /* We're reading a new response. Make sure we don't look at a
6915 previously cached response. */
6916 rs->cached_wait_status = 0;
6918 strcpy (*buf, "timeout");
6921 timeout = watchdog > 0 ? watchdog : -1;
6922 else if (expecting_notif)
6923 timeout = 0; /* There should already be a char in the buffer. If
6926 timeout = remote_timeout;
6930 /* Process any number of notifications, and then return when
6934 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
6936 for (tries = 1; tries <= MAX_TRIES; tries++)
6938 /* This can loop forever if the remote side sends us
6939 characters continuously, but if it pauses, we'll get
6940 SERIAL_TIMEOUT from readchar because of timeout. Then
6941 we'll count that as a retry.
6943 Note that even when forever is set, we will only wait
6944 forever prior to the start of a packet. After that, we
6945 expect characters to arrive at a brisk pace. They should
6946 show up within remote_timeout intervals. */
6948 c = readchar (timeout);
6949 while (c != SERIAL_TIMEOUT && c != '$' && c != '%');
6951 if (c == SERIAL_TIMEOUT)
6953 if (expecting_notif)
6954 return -1; /* Don't complain, it's normal to not get
6955 anything in this case. */
6957 if (forever) /* Watchdog went off? Kill the target. */
6961 error (_("Watchdog timeout has expired. Target detached."));
6964 fputs_filtered ("Timed out.\n", gdb_stdlog);
6968 /* We've found the start of a packet or notification.
6969 Now collect the data. */
6970 val = read_frame (buf, sizeof_buf);
6975 serial_write (remote_desc, "-", 1);
6978 if (tries > MAX_TRIES)
6980 /* We have tried hard enough, and just can't receive the
6981 packet/notification. Give up. */
6982 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
6984 /* Skip the ack char if we're in no-ack mode. */
6985 if (!rs->noack_mode)
6986 serial_write (remote_desc, "+", 1);
6990 /* If we got an ordinary packet, return that to our caller. */
6995 struct cleanup *old_chain;
6998 str = escape_buffer (*buf, val);
6999 old_chain = make_cleanup (xfree, str);
7000 fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str);
7001 do_cleanups (old_chain);
7004 /* Skip the ack char if we're in no-ack mode. */
7005 if (!rs->noack_mode)
7006 serial_write (remote_desc, "+", 1);
7010 /* If we got a notification, handle it, and go back to looking
7014 gdb_assert (c == '%');
7018 struct cleanup *old_chain;
7021 str = escape_buffer (*buf, val);
7022 old_chain = make_cleanup (xfree, str);
7023 fprintf_unfiltered (gdb_stdlog,
7024 " Notification received: %s\n",
7026 do_cleanups (old_chain);
7029 handle_notification (*buf, val);
7031 /* Notifications require no acknowledgement. */
7033 if (expecting_notif)
7040 getpkt_sane (char **buf, long *sizeof_buf, int forever)
7042 return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0);
7046 getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever)
7048 return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1);
7053 remote_kill (struct target_ops *ops)
7055 /* Use catch_errors so the user can quit from gdb even when we
7056 aren't on speaking terms with the remote system. */
7057 catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR);
7059 /* Don't wait for it to die. I'm not really sure it matters whether
7060 we do or not. For the existing stubs, kill is a noop. */
7061 target_mourn_inferior ();
7065 remote_vkill (int pid, struct remote_state *rs)
7067 if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE)
7070 /* Tell the remote target to detach. */
7071 sprintf (rs->buf, "vKill;%x", pid);
7073 getpkt (&rs->buf, &rs->buf_size, 0);
7075 if (packet_ok (rs->buf,
7076 &remote_protocol_packets[PACKET_vKill]) == PACKET_OK)
7078 else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE)
7085 extended_remote_kill (struct target_ops *ops)
7088 int pid = ptid_get_pid (inferior_ptid);
7089 struct remote_state *rs = get_remote_state ();
7091 res = remote_vkill (pid, rs);
7092 if (res == -1 && !remote_multi_process_p (rs))
7094 /* Don't try 'k' on a multi-process aware stub -- it has no way
7095 to specify the pid. */
7099 getpkt (&rs->buf, &rs->buf_size, 0);
7100 if (rs->buf[0] != 'O' || rs->buf[0] != 'K')
7103 /* Don't wait for it to die. I'm not really sure it matters whether
7104 we do or not. For the existing stubs, kill is a noop. */
7110 error (_("Can't kill process"));
7112 target_mourn_inferior ();
7116 remote_mourn (struct target_ops *ops)
7118 remote_mourn_1 (ops);
7121 /* Worker function for remote_mourn. */
7123 remote_mourn_1 (struct target_ops *target)
7125 unpush_target (target);
7127 /* remote_close takes care of doing most of the clean up. */
7128 generic_mourn_inferior ();
7132 extended_remote_mourn_1 (struct target_ops *target)
7134 struct remote_state *rs = get_remote_state ();
7136 /* In case we got here due to an error, but we're going to stay
7138 rs->waiting_for_stop_reply = 0;
7140 /* We're no longer interested in these events. */
7141 discard_pending_stop_replies (ptid_get_pid (inferior_ptid));
7143 /* If the current general thread belonged to the process we just
7144 detached from or has exited, the remote side current general
7145 thread becomes undefined. Considering a case like this:
7147 - We just got here due to a detach.
7148 - The process that we're detaching from happens to immediately
7149 report a global breakpoint being hit in non-stop mode, in the
7150 same thread we had selected before.
7151 - GDB attaches to this process again.
7152 - This event happens to be the next event we handle.
7154 GDB would consider that the current general thread didn't need to
7155 be set on the stub side (with Hg), since for all it knew,
7156 GENERAL_THREAD hadn't changed.
7158 Notice that although in all-stop mode, the remote server always
7159 sets the current thread to the thread reporting the stop event,
7160 that doesn't happen in non-stop mode; in non-stop, the stub *must
7161 not* change the current thread when reporting a breakpoint hit,
7162 due to the decoupling of event reporting and event handling.
7164 To keep things simple, we always invalidate our notion of the
7166 record_currthread (minus_one_ptid);
7168 /* Unlike "target remote", we do not want to unpush the target; then
7169 the next time the user says "run", we won't be connected. */
7171 /* Call common code to mark the inferior as not running. */
7172 generic_mourn_inferior ();
7174 if (!have_inferiors ())
7176 if (!remote_multi_process_p (rs))
7178 /* Check whether the target is running now - some remote stubs
7179 automatically restart after kill. */
7181 getpkt (&rs->buf, &rs->buf_size, 0);
7183 if (rs->buf[0] == 'S' || rs->buf[0] == 'T')
7185 /* Assume that the target has been restarted. Set inferior_ptid
7186 so that bits of core GDB realizes there's something here, e.g.,
7187 so that the user can say "kill" again. */
7188 inferior_ptid = magic_null_ptid;
7195 extended_remote_mourn (struct target_ops *ops)
7197 extended_remote_mourn_1 (ops);
7201 extended_remote_run (char *args)
7203 struct remote_state *rs = get_remote_state ();
7206 /* If the user has disabled vRun support, or we have detected that
7207 support is not available, do not try it. */
7208 if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE)
7211 strcpy (rs->buf, "vRun;");
7212 len = strlen (rs->buf);
7214 if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ())
7215 error (_("Remote file name too long for run packet"));
7216 len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0);
7218 gdb_assert (args != NULL);
7221 struct cleanup *back_to;
7225 argv = gdb_buildargv (args);
7226 back_to = make_cleanup ((void (*) (void *)) freeargv, argv);
7227 for (i = 0; argv[i] != NULL; i++)
7229 if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ())
7230 error (_("Argument list too long for run packet"));
7231 rs->buf[len++] = ';';
7232 len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0);
7234 do_cleanups (back_to);
7237 rs->buf[len++] = '\0';
7240 getpkt (&rs->buf, &rs->buf_size, 0);
7242 if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK)
7244 /* We have a wait response; we don't need it, though. All is well. */
7247 else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE)
7248 /* It wasn't disabled before, but it is now. */
7252 if (remote_exec_file[0] == '\0')
7253 error (_("Running the default executable on the remote target failed; "
7254 "try \"set remote exec-file\"?"));
7256 error (_("Running \"%s\" on the remote target failed"),
7261 /* In the extended protocol we want to be able to do things like
7262 "run" and have them basically work as expected. So we need
7263 a special create_inferior function. We support changing the
7264 executable file and the command line arguments, but not the
7268 extended_remote_create_inferior_1 (char *exec_file, char *args,
7269 char **env, int from_tty)
7271 /* If running asynchronously, register the target file descriptor
7272 with the event loop. */
7273 if (target_can_async_p ())
7274 target_async (inferior_event_handler, 0);
7276 /* Now restart the remote server. */
7277 if (extended_remote_run (args) == -1)
7279 /* vRun was not supported. Fail if we need it to do what the
7281 if (remote_exec_file[0])
7282 error (_("Remote target does not support \"set remote exec-file\""));
7284 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7286 /* Fall back to "R". */
7287 extended_remote_restart ();
7290 if (!have_inferiors ())
7292 /* Clean up from the last time we ran, before we mark the target
7293 running again. This will mark breakpoints uninserted, and
7294 get_offsets may insert breakpoints. */
7295 init_thread_list ();
7296 init_wait_for_inferior ();
7299 /* Now mark the inferior as running before we do anything else. */
7300 inferior_ptid = magic_null_ptid;
7302 /* Now, if we have thread information, update inferior_ptid. */
7303 inferior_ptid = remote_current_thread (inferior_ptid);
7305 remote_add_inferior (ptid_get_pid (inferior_ptid), 0);
7306 add_thread_silent (inferior_ptid);
7308 /* Get updated offsets, if the stub uses qOffsets. */
7313 extended_remote_create_inferior (struct target_ops *ops,
7314 char *exec_file, char *args,
7315 char **env, int from_tty)
7317 extended_remote_create_inferior_1 (exec_file, args, env, from_tty);
7321 /* Insert a breakpoint. On targets that have software breakpoint
7322 support, we ask the remote target to do the work; on targets
7323 which don't, we insert a traditional memory breakpoint. */
7326 remote_insert_breakpoint (struct gdbarch *gdbarch,
7327 struct bp_target_info *bp_tgt)
7329 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7330 If it succeeds, then set the support to PACKET_ENABLE. If it
7331 fails, and the user has explicitly requested the Z support then
7332 report an error, otherwise, mark it disabled and go on. */
7334 if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE)
7336 CORE_ADDR addr = bp_tgt->placed_address;
7337 struct remote_state *rs;
7341 gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize);
7343 rs = get_remote_state ();
7349 addr = (ULONGEST) remote_address_masked (addr);
7350 p += hexnumstr (p, addr);
7351 sprintf (p, ",%d", bpsize);
7354 getpkt (&rs->buf, &rs->buf_size, 0);
7356 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0]))
7361 bp_tgt->placed_address = addr;
7362 bp_tgt->placed_size = bpsize;
7364 case PACKET_UNKNOWN:
7369 return memory_insert_breakpoint (gdbarch, bp_tgt);
7373 remote_remove_breakpoint (struct gdbarch *gdbarch,
7374 struct bp_target_info *bp_tgt)
7376 CORE_ADDR addr = bp_tgt->placed_address;
7377 struct remote_state *rs = get_remote_state ();
7379 if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE)
7387 addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address);
7388 p += hexnumstr (p, addr);
7389 sprintf (p, ",%d", bp_tgt->placed_size);
7392 getpkt (&rs->buf, &rs->buf_size, 0);
7394 return (rs->buf[0] == 'E');
7397 return memory_remove_breakpoint (gdbarch, bp_tgt);
7401 watchpoint_to_Z_packet (int type)
7406 return Z_PACKET_WRITE_WP;
7409 return Z_PACKET_READ_WP;
7412 return Z_PACKET_ACCESS_WP;
7415 internal_error (__FILE__, __LINE__,
7416 _("hw_bp_to_z: bad watchpoint type %d"), type);
7421 remote_insert_watchpoint (CORE_ADDR addr, int len, int type)
7423 struct remote_state *rs = get_remote_state ();
7425 enum Z_packet_type packet = watchpoint_to_Z_packet (type);
7427 if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE)
7430 sprintf (rs->buf, "Z%x,", packet);
7431 p = strchr (rs->buf, '\0');
7432 addr = remote_address_masked (addr);
7433 p += hexnumstr (p, (ULONGEST) addr);
7434 sprintf (p, ",%x", len);
7437 getpkt (&rs->buf, &rs->buf_size, 0);
7439 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet]))
7443 case PACKET_UNKNOWN:
7448 internal_error (__FILE__, __LINE__,
7449 _("remote_insert_watchpoint: reached end of function"));
7454 remote_remove_watchpoint (CORE_ADDR addr, int len, int type)
7456 struct remote_state *rs = get_remote_state ();
7458 enum Z_packet_type packet = watchpoint_to_Z_packet (type);
7460 if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE)
7463 sprintf (rs->buf, "z%x,", packet);
7464 p = strchr (rs->buf, '\0');
7465 addr = remote_address_masked (addr);
7466 p += hexnumstr (p, (ULONGEST) addr);
7467 sprintf (p, ",%x", len);
7469 getpkt (&rs->buf, &rs->buf_size, 0);
7471 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet]))
7474 case PACKET_UNKNOWN:
7479 internal_error (__FILE__, __LINE__,
7480 _("remote_remove_watchpoint: reached end of function"));
7484 int remote_hw_watchpoint_limit = -1;
7485 int remote_hw_breakpoint_limit = -1;
7488 remote_check_watch_resources (int type, int cnt, int ot)
7490 if (type == bp_hardware_breakpoint)
7492 if (remote_hw_breakpoint_limit == 0)
7494 else if (remote_hw_breakpoint_limit < 0)
7496 else if (cnt <= remote_hw_breakpoint_limit)
7501 if (remote_hw_watchpoint_limit == 0)
7503 else if (remote_hw_watchpoint_limit < 0)
7507 else if (cnt <= remote_hw_watchpoint_limit)
7514 remote_stopped_by_watchpoint (void)
7516 return remote_stopped_by_watchpoint_p;
7520 remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
7523 if (remote_stopped_by_watchpoint ())
7525 *addr_p = remote_watch_data_address;
7534 remote_insert_hw_breakpoint (struct gdbarch *gdbarch,
7535 struct bp_target_info *bp_tgt)
7538 struct remote_state *rs;
7541 /* The length field should be set to the size of a breakpoint
7542 instruction, even though we aren't inserting one ourselves. */
7544 gdbarch_remote_breakpoint_from_pc
7545 (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size);
7547 if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE)
7550 rs = get_remote_state ();
7557 addr = remote_address_masked (bp_tgt->placed_address);
7558 p += hexnumstr (p, (ULONGEST) addr);
7559 sprintf (p, ",%x", bp_tgt->placed_size);
7562 getpkt (&rs->buf, &rs->buf_size, 0);
7564 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1]))
7567 case PACKET_UNKNOWN:
7572 internal_error (__FILE__, __LINE__,
7573 _("remote_insert_hw_breakpoint: reached end of function"));
7578 remote_remove_hw_breakpoint (struct gdbarch *gdbarch,
7579 struct bp_target_info *bp_tgt)
7582 struct remote_state *rs = get_remote_state ();
7585 if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE)
7592 addr = remote_address_masked (bp_tgt->placed_address);
7593 p += hexnumstr (p, (ULONGEST) addr);
7594 sprintf (p, ",%x", bp_tgt->placed_size);
7597 getpkt (&rs->buf, &rs->buf_size, 0);
7599 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1]))
7602 case PACKET_UNKNOWN:
7607 internal_error (__FILE__, __LINE__,
7608 _("remote_remove_hw_breakpoint: reached end of function"));
7611 /* Table used by the crc32 function to calcuate the checksum. */
7613 static unsigned long crc32_table[256] =
7616 static unsigned long
7617 crc32 (const unsigned char *buf, int len, unsigned int crc)
7619 if (!crc32_table[1])
7621 /* Initialize the CRC table and the decoding table. */
7625 for (i = 0; i < 256; i++)
7627 for (c = i << 24, j = 8; j > 0; --j)
7628 c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
7635 crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255];
7641 /* Verify memory using the "qCRC:" request. */
7644 remote_verify_memory (struct target_ops *ops,
7645 const gdb_byte *data, CORE_ADDR lma, ULONGEST size)
7647 struct remote_state *rs = get_remote_state ();
7648 unsigned long host_crc, target_crc;
7651 /* FIXME: assumes lma can fit into long. */
7652 xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx",
7653 (long) lma, (long) size);
7656 /* Be clever; compute the host_crc before waiting for target
7658 host_crc = crc32 (data, size, 0xffffffff);
7660 getpkt (&rs->buf, &rs->buf_size, 0);
7661 if (rs->buf[0] == 'E')
7664 if (rs->buf[0] != 'C')
7665 error (_("remote target does not support this operation"));
7667 for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++)
7668 target_crc = target_crc * 16 + fromhex (*tmp);
7670 return (host_crc == target_crc);
7673 /* compare-sections command
7675 With no arguments, compares each loadable section in the exec bfd
7676 with the same memory range on the target, and reports mismatches.
7677 Useful for verifying the image on the target against the exec file. */
7680 compare_sections_command (char *args, int from_tty)
7683 struct cleanup *old_chain;
7685 const char *sectname;
7693 error (_("command cannot be used without an exec file"));
7695 for (s = exec_bfd->sections; s; s = s->next)
7697 if (!(s->flags & SEC_LOAD))
7698 continue; /* skip non-loadable section */
7700 size = bfd_get_section_size (s);
7702 continue; /* skip zero-length section */
7704 sectname = bfd_get_section_name (exec_bfd, s);
7705 if (args && strcmp (args, sectname) != 0)
7706 continue; /* not the section selected by user */
7708 matched = 1; /* do this section */
7711 sectdata = xmalloc (size);
7712 old_chain = make_cleanup (xfree, sectdata);
7713 bfd_get_section_contents (exec_bfd, s, sectdata, 0, size);
7715 res = target_verify_memory (sectdata, lma, size);
7718 error (_("target memory fault, section %s, range %s -- %s"), sectname,
7719 paddress (target_gdbarch, lma),
7720 paddress (target_gdbarch, lma + size));
7722 printf_filtered ("Section %s, range %s -- %s: ", sectname,
7723 paddress (target_gdbarch, lma),
7724 paddress (target_gdbarch, lma + size));
7726 printf_filtered ("matched.\n");
7729 printf_filtered ("MIS-MATCHED!\n");
7733 do_cleanups (old_chain);
7736 warning (_("One or more sections of the remote executable does not match\n\
7737 the loaded file\n"));
7738 if (args && !matched)
7739 printf_filtered (_("No loaded section named '%s'.\n"), args);
7742 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
7743 into remote target. The number of bytes written to the remote
7744 target is returned, or -1 for error. */
7747 remote_write_qxfer (struct target_ops *ops, const char *object_name,
7748 const char *annex, const gdb_byte *writebuf,
7749 ULONGEST offset, LONGEST len,
7750 struct packet_config *packet)
7754 struct remote_state *rs = get_remote_state ();
7755 int max_size = get_memory_write_packet_size ();
7757 if (packet->support == PACKET_DISABLE)
7760 /* Insert header. */
7761 i = snprintf (rs->buf, max_size,
7762 "qXfer:%s:write:%s:%s:",
7763 object_name, annex ? annex : "",
7764 phex_nz (offset, sizeof offset));
7765 max_size -= (i + 1);
7767 /* Escape as much data as fits into rs->buf. */
7768 buf_len = remote_escape_output
7769 (writebuf, len, (rs->buf + i), &max_size, max_size);
7771 if (putpkt_binary (rs->buf, i + buf_len) < 0
7772 || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0
7773 || packet_ok (rs->buf, packet) != PACKET_OK)
7776 unpack_varlen_hex (rs->buf, &n);
7780 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
7781 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
7782 number of bytes read is returned, or 0 for EOF, or -1 for error.
7783 The number of bytes read may be less than LEN without indicating an
7784 EOF. PACKET is checked and updated to indicate whether the remote
7785 target supports this object. */
7788 remote_read_qxfer (struct target_ops *ops, const char *object_name,
7790 gdb_byte *readbuf, ULONGEST offset, LONGEST len,
7791 struct packet_config *packet)
7793 static char *finished_object;
7794 static char *finished_annex;
7795 static ULONGEST finished_offset;
7797 struct remote_state *rs = get_remote_state ();
7798 LONGEST i, n, packet_len;
7800 if (packet->support == PACKET_DISABLE)
7803 /* Check whether we've cached an end-of-object packet that matches
7805 if (finished_object)
7807 if (strcmp (object_name, finished_object) == 0
7808 && strcmp (annex ? annex : "", finished_annex) == 0
7809 && offset == finished_offset)
7812 /* Otherwise, we're now reading something different. Discard
7814 xfree (finished_object);
7815 xfree (finished_annex);
7816 finished_object = NULL;
7817 finished_annex = NULL;
7820 /* Request only enough to fit in a single packet. The actual data
7821 may not, since we don't know how much of it will need to be escaped;
7822 the target is free to respond with slightly less data. We subtract
7823 five to account for the response type and the protocol frame. */
7824 n = min (get_remote_packet_size () - 5, len);
7825 snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
7826 object_name, annex ? annex : "",
7827 phex_nz (offset, sizeof offset),
7828 phex_nz (n, sizeof n));
7829 i = putpkt (rs->buf);
7834 packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0);
7835 if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK)
7838 if (rs->buf[0] != 'l' && rs->buf[0] != 'm')
7839 error (_("Unknown remote qXfer reply: %s"), rs->buf);
7841 /* 'm' means there is (or at least might be) more data after this
7842 batch. That does not make sense unless there's at least one byte
7843 of data in this reply. */
7844 if (rs->buf[0] == 'm' && packet_len == 1)
7845 error (_("Remote qXfer reply contained no data."));
7847 /* Got some data. */
7848 i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n);
7850 /* 'l' is an EOF marker, possibly including a final block of data,
7851 or possibly empty. If we have the final block of a non-empty
7852 object, record this fact to bypass a subsequent partial read. */
7853 if (rs->buf[0] == 'l' && offset + i > 0)
7855 finished_object = xstrdup (object_name);
7856 finished_annex = xstrdup (annex ? annex : "");
7857 finished_offset = offset + i;
7864 remote_xfer_partial (struct target_ops *ops, enum target_object object,
7865 const char *annex, gdb_byte *readbuf,
7866 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
7868 struct remote_state *rs;
7873 set_general_thread (inferior_ptid);
7875 rs = get_remote_state ();
7877 /* Handle memory using the standard memory routines. */
7878 if (object == TARGET_OBJECT_MEMORY)
7883 /* If the remote target is connected but not running, we should
7884 pass this request down to a lower stratum (e.g. the executable
7886 if (!target_has_execution)
7889 if (writebuf != NULL)
7890 xfered = remote_write_bytes (offset, writebuf, len);
7892 xfered = remote_read_bytes (offset, readbuf, len);
7896 else if (xfered == 0 && errno == 0)
7902 /* Handle SPU memory using qxfer packets. */
7903 if (object == TARGET_OBJECT_SPU)
7906 return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len,
7907 &remote_protocol_packets
7908 [PACKET_qXfer_spu_read]);
7910 return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len,
7911 &remote_protocol_packets
7912 [PACKET_qXfer_spu_write]);
7915 /* Handle extra signal info using qxfer packets. */
7916 if (object == TARGET_OBJECT_SIGNAL_INFO)
7919 return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len,
7920 &remote_protocol_packets
7921 [PACKET_qXfer_siginfo_read]);
7923 return remote_write_qxfer (ops, "siginfo", annex, writebuf, offset, len,
7924 &remote_protocol_packets
7925 [PACKET_qXfer_siginfo_write]);
7928 /* Only handle flash writes. */
7929 if (writebuf != NULL)
7935 case TARGET_OBJECT_FLASH:
7936 xfered = remote_flash_write (ops, offset, len, writebuf);
7940 else if (xfered == 0 && errno == 0)
7950 /* Map pre-existing objects onto letters. DO NOT do this for new
7951 objects!!! Instead specify new query packets. */
7954 case TARGET_OBJECT_AVR:
7958 case TARGET_OBJECT_AUXV:
7959 gdb_assert (annex == NULL);
7960 return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len,
7961 &remote_protocol_packets[PACKET_qXfer_auxv]);
7963 case TARGET_OBJECT_AVAILABLE_FEATURES:
7964 return remote_read_qxfer
7965 (ops, "features", annex, readbuf, offset, len,
7966 &remote_protocol_packets[PACKET_qXfer_features]);
7968 case TARGET_OBJECT_LIBRARIES:
7969 return remote_read_qxfer
7970 (ops, "libraries", annex, readbuf, offset, len,
7971 &remote_protocol_packets[PACKET_qXfer_libraries]);
7973 case TARGET_OBJECT_MEMORY_MAP:
7974 gdb_assert (annex == NULL);
7975 return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len,
7976 &remote_protocol_packets[PACKET_qXfer_memory_map]);
7978 case TARGET_OBJECT_OSDATA:
7979 /* Should only get here if we're connected. */
7980 gdb_assert (remote_desc);
7981 return remote_read_qxfer
7982 (ops, "osdata", annex, readbuf, offset, len,
7983 &remote_protocol_packets[PACKET_qXfer_osdata]);
7985 case TARGET_OBJECT_THREADS:
7986 gdb_assert (annex == NULL);
7987 return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len,
7988 &remote_protocol_packets[PACKET_qXfer_threads]);
7994 /* Note: a zero OFFSET and LEN can be used to query the minimum
7996 if (offset == 0 && len == 0)
7997 return (get_remote_packet_size ());
7998 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
7999 large enough let the caller deal with it. */
8000 if (len < get_remote_packet_size ())
8002 len = get_remote_packet_size ();
8004 /* Except for querying the minimum buffer size, target must be open. */
8006 error (_("remote query is only available after target open"));
8008 gdb_assert (annex != NULL);
8009 gdb_assert (readbuf != NULL);
8015 /* We used one buffer char for the remote protocol q command and
8016 another for the query type. As the remote protocol encapsulation
8017 uses 4 chars plus one extra in case we are debugging
8018 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8021 while (annex[i] && (i < (get_remote_packet_size () - 8)))
8023 /* Bad caller may have sent forbidden characters. */
8024 gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#');
8029 gdb_assert (annex[i] == '\0');
8031 i = putpkt (rs->buf);
8035 getpkt (&rs->buf, &rs->buf_size, 0);
8036 strcpy ((char *) readbuf, rs->buf);
8038 return strlen ((char *) readbuf);
8042 remote_search_memory (struct target_ops* ops,
8043 CORE_ADDR start_addr, ULONGEST search_space_len,
8044 const gdb_byte *pattern, ULONGEST pattern_len,
8045 CORE_ADDR *found_addrp)
8047 int addr_size = gdbarch_addr_bit (target_gdbarch) / 8;
8048 struct remote_state *rs = get_remote_state ();
8049 int max_size = get_memory_write_packet_size ();
8050 struct packet_config *packet =
8051 &remote_protocol_packets[PACKET_qSearch_memory];
8052 /* number of packet bytes used to encode the pattern,
8053 this could be more than PATTERN_LEN due to escape characters */
8054 int escaped_pattern_len;
8055 /* amount of pattern that was encodable in the packet */
8056 int used_pattern_len;
8059 ULONGEST found_addr;
8061 /* Don't go to the target if we don't have to.
8062 This is done before checking packet->support to avoid the possibility that
8063 a success for this edge case means the facility works in general. */
8064 if (pattern_len > search_space_len)
8066 if (pattern_len == 0)
8068 *found_addrp = start_addr;
8072 /* If we already know the packet isn't supported, fall back to the simple
8073 way of searching memory. */
8075 if (packet->support == PACKET_DISABLE)
8077 /* Target doesn't provided special support, fall back and use the
8078 standard support (copy memory and do the search here). */
8079 return simple_search_memory (ops, start_addr, search_space_len,
8080 pattern, pattern_len, found_addrp);
8083 /* Insert header. */
8084 i = snprintf (rs->buf, max_size,
8085 "qSearch:memory:%s;%s;",
8086 phex_nz (start_addr, addr_size),
8087 phex_nz (search_space_len, sizeof (search_space_len)));
8088 max_size -= (i + 1);
8090 /* Escape as much data as fits into rs->buf. */
8091 escaped_pattern_len =
8092 remote_escape_output (pattern, pattern_len, (rs->buf + i),
8093 &used_pattern_len, max_size);
8095 /* Bail if the pattern is too large. */
8096 if (used_pattern_len != pattern_len)
8097 error ("Pattern is too large to transmit to remote target.");
8099 if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0
8100 || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0
8101 || packet_ok (rs->buf, packet) != PACKET_OK)
8103 /* The request may not have worked because the command is not
8104 supported. If so, fall back to the simple way. */
8105 if (packet->support == PACKET_DISABLE)
8107 return simple_search_memory (ops, start_addr, search_space_len,
8108 pattern, pattern_len, found_addrp);
8113 if (rs->buf[0] == '0')
8115 else if (rs->buf[0] == '1')
8118 if (rs->buf[1] != ',')
8119 error (_("Unknown qSearch:memory reply: %s"), rs->buf);
8120 unpack_varlen_hex (rs->buf + 2, &found_addr);
8121 *found_addrp = found_addr;
8124 error (_("Unknown qSearch:memory reply: %s"), rs->buf);
8130 remote_rcmd (char *command,
8131 struct ui_file *outbuf)
8133 struct remote_state *rs = get_remote_state ();
8137 error (_("remote rcmd is only available after target open"));
8139 /* Send a NULL command across as an empty command. */
8140 if (command == NULL)
8143 /* The query prefix. */
8144 strcpy (rs->buf, "qRcmd,");
8145 p = strchr (rs->buf, '\0');
8147 if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ())
8148 error (_("\"monitor\" command ``%s'' is too long."), command);
8150 /* Encode the actual command. */
8151 bin2hex ((gdb_byte *) command, p, 0);
8153 if (putpkt (rs->buf) < 0)
8154 error (_("Communication problem with target."));
8156 /* get/display the response */
8161 /* XXX - see also remote_get_noisy_reply(). */
8163 getpkt (&rs->buf, &rs->buf_size, 0);
8166 error (_("Target does not support this command."));
8167 if (buf[0] == 'O' && buf[1] != 'K')
8169 remote_console_output (buf + 1); /* 'O' message from stub. */
8172 if (strcmp (buf, "OK") == 0)
8174 if (strlen (buf) == 3 && buf[0] == 'E'
8175 && isdigit (buf[1]) && isdigit (buf[2]))
8177 error (_("Protocol error with Rcmd"));
8179 for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2)
8181 char c = (fromhex (p[0]) << 4) + fromhex (p[1]);
8182 fputc_unfiltered (c, outbuf);
8188 static VEC(mem_region_s) *
8189 remote_memory_map (struct target_ops *ops)
8191 VEC(mem_region_s) *result = NULL;
8192 char *text = target_read_stralloc (¤t_target,
8193 TARGET_OBJECT_MEMORY_MAP, NULL);
8197 struct cleanup *back_to = make_cleanup (xfree, text);
8198 result = parse_memory_map (text);
8199 do_cleanups (back_to);
8206 packet_command (char *args, int from_tty)
8208 struct remote_state *rs = get_remote_state ();
8211 error (_("command can only be used with remote target"));
8214 error (_("remote-packet command requires packet text as argument"));
8216 puts_filtered ("sending: ");
8217 print_packet (args);
8218 puts_filtered ("\n");
8221 getpkt (&rs->buf, &rs->buf_size, 0);
8222 puts_filtered ("received: ");
8223 print_packet (rs->buf);
8224 puts_filtered ("\n");
8228 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8230 static void display_thread_info (struct gdb_ext_thread_info *info);
8232 static void threadset_test_cmd (char *cmd, int tty);
8234 static void threadalive_test (char *cmd, int tty);
8236 static void threadlist_test_cmd (char *cmd, int tty);
8238 int get_and_display_threadinfo (threadref *ref);
8240 static void threadinfo_test_cmd (char *cmd, int tty);
8242 static int thread_display_step (threadref *ref, void *context);
8244 static void threadlist_update_test_cmd (char *cmd, int tty);
8246 static void init_remote_threadtests (void);
8248 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8251 threadset_test_cmd (char *cmd, int tty)
8253 int sample_thread = SAMPLE_THREAD;
8255 printf_filtered (_("Remote threadset test\n"));
8256 set_general_thread (sample_thread);
8261 threadalive_test (char *cmd, int tty)
8263 int sample_thread = SAMPLE_THREAD;
8264 int pid = ptid_get_pid (inferior_ptid);
8265 ptid_t ptid = ptid_build (pid, 0, sample_thread);
8267 if (remote_thread_alive (ptid))
8268 printf_filtered ("PASS: Thread alive test\n");
8270 printf_filtered ("FAIL: Thread alive test\n");
8273 void output_threadid (char *title, threadref *ref);
8276 output_threadid (char *title, threadref *ref)
8280 pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */
8282 printf_filtered ("%s %s\n", title, (&hexid[0]));
8286 threadlist_test_cmd (char *cmd, int tty)
8289 threadref nextthread;
8290 int done, result_count;
8291 threadref threadlist[3];
8293 printf_filtered ("Remote Threadlist test\n");
8294 if (!remote_get_threadlist (startflag, &nextthread, 3, &done,
8295 &result_count, &threadlist[0]))
8296 printf_filtered ("FAIL: threadlist test\n");
8299 threadref *scan = threadlist;
8300 threadref *limit = scan + result_count;
8302 while (scan < limit)
8303 output_threadid (" thread ", scan++);
8308 display_thread_info (struct gdb_ext_thread_info *info)
8310 output_threadid ("Threadid: ", &info->threadid);
8311 printf_filtered ("Name: %s\n ", info->shortname);
8312 printf_filtered ("State: %s\n", info->display);
8313 printf_filtered ("other: %s\n\n", info->more_display);
8317 get_and_display_threadinfo (threadref *ref)
8321 struct gdb_ext_thread_info threadinfo;
8323 set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
8324 | TAG_MOREDISPLAY | TAG_DISPLAY;
8325 if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo)))
8326 display_thread_info (&threadinfo);
8331 threadinfo_test_cmd (char *cmd, int tty)
8333 int athread = SAMPLE_THREAD;
8337 int_to_threadref (&thread, athread);
8338 printf_filtered ("Remote Threadinfo test\n");
8339 if (!get_and_display_threadinfo (&thread))
8340 printf_filtered ("FAIL cannot get thread info\n");
8344 thread_display_step (threadref *ref, void *context)
8346 /* output_threadid(" threadstep ",ref); *//* simple test */
8347 return get_and_display_threadinfo (ref);
8351 threadlist_update_test_cmd (char *cmd, int tty)
8353 printf_filtered ("Remote Threadlist update test\n");
8354 remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS);
8358 init_remote_threadtests (void)
8360 add_com ("tlist", class_obscure, threadlist_test_cmd, _("\
8361 Fetch and print the remote list of thread identifiers, one pkt only"));
8362 add_com ("tinfo", class_obscure, threadinfo_test_cmd,
8363 _("Fetch and display info about one thread"));
8364 add_com ("tset", class_obscure, threadset_test_cmd,
8365 _("Test setting to a different thread"));
8366 add_com ("tupd", class_obscure, threadlist_update_test_cmd,
8367 _("Iterate through updating all remote thread info"));
8368 add_com ("talive", class_obscure, threadalive_test,
8369 _(" Remote thread alive test "));
8374 /* Convert a thread ID to a string. Returns the string in a static
8378 remote_pid_to_str (struct target_ops *ops, ptid_t ptid)
8380 static char buf[64];
8381 struct remote_state *rs = get_remote_state ();
8383 if (ptid_is_pid (ptid))
8385 /* Printing an inferior target id. */
8387 /* When multi-process extensions are off, there's no way in the
8388 remote protocol to know the remote process id, if there's any
8389 at all. There's one exception --- when we're connected with
8390 target extended-remote, and we manually attached to a process
8391 with "attach PID". We don't record anywhere a flag that
8392 allows us to distinguish that case from the case of
8393 connecting with extended-remote and the stub already being
8394 attached to a process, and reporting yes to qAttached, hence
8395 no smart special casing here. */
8396 if (!remote_multi_process_p (rs))
8398 xsnprintf (buf, sizeof buf, "Remote target");
8402 return normal_pid_to_str (ptid);
8406 if (ptid_equal (magic_null_ptid, ptid))
8407 xsnprintf (buf, sizeof buf, "Thread <main>");
8408 else if (remote_multi_process_p (rs))
8409 xsnprintf (buf, sizeof buf, "Thread %d.%ld",
8410 ptid_get_pid (ptid), ptid_get_tid (ptid));
8412 xsnprintf (buf, sizeof buf, "Thread %ld",
8413 ptid_get_tid (ptid));
8418 /* Get the address of the thread local variable in OBJFILE which is
8419 stored at OFFSET within the thread local storage for thread PTID. */
8422 remote_get_thread_local_address (struct target_ops *ops,
8423 ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset)
8425 if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE)
8427 struct remote_state *rs = get_remote_state ();
8429 char *endp = rs->buf + get_remote_packet_size ();
8430 enum packet_result result;
8432 strcpy (p, "qGetTLSAddr:");
8434 p = write_ptid (p, endp, ptid);
8436 p += hexnumstr (p, offset);
8438 p += hexnumstr (p, lm);
8442 getpkt (&rs->buf, &rs->buf_size, 0);
8443 result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]);
8444 if (result == PACKET_OK)
8448 unpack_varlen_hex (rs->buf, &result);
8451 else if (result == PACKET_UNKNOWN)
8452 throw_error (TLS_GENERIC_ERROR,
8453 _("Remote target doesn't support qGetTLSAddr packet"));
8455 throw_error (TLS_GENERIC_ERROR,
8456 _("Remote target failed to process qGetTLSAddr request"));
8459 throw_error (TLS_GENERIC_ERROR,
8460 _("TLS not supported or disabled on this target"));
8465 /* Provide thread local base, i.e. Thread Information Block address.
8466 Returns 1 if ptid is found and thread_local_base is non zero. */
8469 remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr)
8471 if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE)
8473 struct remote_state *rs = get_remote_state ();
8475 char *endp = rs->buf + get_remote_packet_size ();
8476 enum packet_result result;
8478 strcpy (p, "qGetTIBAddr:");
8480 p = write_ptid (p, endp, ptid);
8484 getpkt (&rs->buf, &rs->buf_size, 0);
8485 result = packet_ok (rs->buf,
8486 &remote_protocol_packets[PACKET_qGetTIBAddr]);
8487 if (result == PACKET_OK)
8491 unpack_varlen_hex (rs->buf, &result);
8493 *addr = (CORE_ADDR) result;
8496 else if (result == PACKET_UNKNOWN)
8497 error (_("Remote target doesn't support qGetTIBAddr packet"));
8499 error (_("Remote target failed to process qGetTIBAddr request"));
8502 error (_("qGetTIBAddr not supported or disabled on this target"));
8507 /* Support for inferring a target description based on the current
8508 architecture and the size of a 'g' packet. While the 'g' packet
8509 can have any size (since optional registers can be left off the
8510 end), some sizes are easily recognizable given knowledge of the
8511 approximate architecture. */
8513 struct remote_g_packet_guess
8516 const struct target_desc *tdesc;
8518 typedef struct remote_g_packet_guess remote_g_packet_guess_s;
8519 DEF_VEC_O(remote_g_packet_guess_s);
8521 struct remote_g_packet_data
8523 VEC(remote_g_packet_guess_s) *guesses;
8526 static struct gdbarch_data *remote_g_packet_data_handle;
8529 remote_g_packet_data_init (struct obstack *obstack)
8531 return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data);
8535 register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes,
8536 const struct target_desc *tdesc)
8538 struct remote_g_packet_data *data
8539 = gdbarch_data (gdbarch, remote_g_packet_data_handle);
8540 struct remote_g_packet_guess new_guess, *guess;
8543 gdb_assert (tdesc != NULL);
8546 VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess);
8548 if (guess->bytes == bytes)
8549 internal_error (__FILE__, __LINE__,
8550 "Duplicate g packet description added for size %d",
8553 new_guess.bytes = bytes;
8554 new_guess.tdesc = tdesc;
8555 VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess);
8558 /* Return 1 if remote_read_description would do anything on this target
8559 and architecture, 0 otherwise. */
8562 remote_read_description_p (struct target_ops *target)
8564 struct remote_g_packet_data *data
8565 = gdbarch_data (target_gdbarch, remote_g_packet_data_handle);
8567 if (!VEC_empty (remote_g_packet_guess_s, data->guesses))
8573 static const struct target_desc *
8574 remote_read_description (struct target_ops *target)
8576 struct remote_g_packet_data *data
8577 = gdbarch_data (target_gdbarch, remote_g_packet_data_handle);
8579 /* Do not try this during initial connection, when we do not know
8580 whether there is a running but stopped thread. */
8581 if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid))
8584 if (!VEC_empty (remote_g_packet_guess_s, data->guesses))
8586 struct remote_g_packet_guess *guess;
8588 int bytes = send_g_packet ();
8591 VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess);
8593 if (guess->bytes == bytes)
8594 return guess->tdesc;
8596 /* We discard the g packet. A minor optimization would be to
8597 hold on to it, and fill the register cache once we have selected
8598 an architecture, but it's too tricky to do safely. */
8604 /* Remote file transfer support. This is host-initiated I/O, not
8605 target-initiated; for target-initiated, see remote-fileio.c. */
8607 /* If *LEFT is at least the length of STRING, copy STRING to
8608 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8609 decrease *LEFT. Otherwise raise an error. */
8612 remote_buffer_add_string (char **buffer, int *left, char *string)
8614 int len = strlen (string);
8617 error (_("Packet too long for target."));
8619 memcpy (*buffer, string, len);
8623 /* NUL-terminate the buffer as a convenience, if there is
8629 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
8630 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8631 decrease *LEFT. Otherwise raise an error. */
8634 remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes,
8637 if (2 * len > *left)
8638 error (_("Packet too long for target."));
8640 bin2hex (bytes, *buffer, len);
8644 /* NUL-terminate the buffer as a convenience, if there is
8650 /* If *LEFT is large enough, convert VALUE to hex and add it to
8651 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8652 decrease *LEFT. Otherwise raise an error. */
8655 remote_buffer_add_int (char **buffer, int *left, ULONGEST value)
8657 int len = hexnumlen (value);
8660 error (_("Packet too long for target."));
8662 hexnumstr (*buffer, value);
8666 /* NUL-terminate the buffer as a convenience, if there is
8672 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
8673 value, *REMOTE_ERRNO to the remote error number or zero if none
8674 was included, and *ATTACHMENT to point to the start of the annex
8675 if any. The length of the packet isn't needed here; there may
8676 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
8678 Return 0 if the packet could be parsed, -1 if it could not. If
8679 -1 is returned, the other variables may not be initialized. */
8682 remote_hostio_parse_result (char *buffer, int *retcode,
8683 int *remote_errno, char **attachment)
8690 if (buffer[0] != 'F')
8694 *retcode = strtol (&buffer[1], &p, 16);
8695 if (errno != 0 || p == &buffer[1])
8698 /* Check for ",errno". */
8702 *remote_errno = strtol (p + 1, &p2, 16);
8703 if (errno != 0 || p + 1 == p2)
8708 /* Check for ";attachment". If there is no attachment, the
8709 packet should end here. */
8712 *attachment = p + 1;
8715 else if (*p == '\0')
8721 /* Send a prepared I/O packet to the target and read its response.
8722 The prepared packet is in the global RS->BUF before this function
8723 is called, and the answer is there when we return.
8725 COMMAND_BYTES is the length of the request to send, which may include
8726 binary data. WHICH_PACKET is the packet configuration to check
8727 before attempting a packet. If an error occurs, *REMOTE_ERRNO
8728 is set to the error number and -1 is returned. Otherwise the value
8729 returned by the function is returned.
8731 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
8732 attachment is expected; an error will be reported if there's a
8733 mismatch. If one is found, *ATTACHMENT will be set to point into
8734 the packet buffer and *ATTACHMENT_LEN will be set to the
8735 attachment's length. */
8738 remote_hostio_send_command (int command_bytes, int which_packet,
8739 int *remote_errno, char **attachment,
8740 int *attachment_len)
8742 struct remote_state *rs = get_remote_state ();
8743 int ret, bytes_read;
8744 char *attachment_tmp;
8747 || remote_protocol_packets[which_packet].support == PACKET_DISABLE)
8749 *remote_errno = FILEIO_ENOSYS;
8753 putpkt_binary (rs->buf, command_bytes);
8754 bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0);
8756 /* If it timed out, something is wrong. Don't try to parse the
8760 *remote_errno = FILEIO_EINVAL;
8764 switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet]))
8767 *remote_errno = FILEIO_EINVAL;
8769 case PACKET_UNKNOWN:
8770 *remote_errno = FILEIO_ENOSYS;
8776 if (remote_hostio_parse_result (rs->buf, &ret, remote_errno,
8779 *remote_errno = FILEIO_EINVAL;
8783 /* Make sure we saw an attachment if and only if we expected one. */
8784 if ((attachment_tmp == NULL && attachment != NULL)
8785 || (attachment_tmp != NULL && attachment == NULL))
8787 *remote_errno = FILEIO_EINVAL;
8791 /* If an attachment was found, it must point into the packet buffer;
8792 work out how many bytes there were. */
8793 if (attachment_tmp != NULL)
8795 *attachment = attachment_tmp;
8796 *attachment_len = bytes_read - (*attachment - rs->buf);
8802 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
8803 remote file descriptor, or -1 if an error occurs (and set
8807 remote_hostio_open (const char *filename, int flags, int mode,
8810 struct remote_state *rs = get_remote_state ();
8812 int left = get_remote_packet_size () - 1;
8814 remote_buffer_add_string (&p, &left, "vFile:open:");
8816 remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
8818 remote_buffer_add_string (&p, &left, ",");
8820 remote_buffer_add_int (&p, &left, flags);
8821 remote_buffer_add_string (&p, &left, ",");
8823 remote_buffer_add_int (&p, &left, mode);
8825 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open,
8826 remote_errno, NULL, NULL);
8829 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
8830 Return the number of bytes written, or -1 if an error occurs (and
8831 set *REMOTE_ERRNO). */
8834 remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len,
8835 ULONGEST offset, int *remote_errno)
8837 struct remote_state *rs = get_remote_state ();
8839 int left = get_remote_packet_size ();
8842 remote_buffer_add_string (&p, &left, "vFile:pwrite:");
8844 remote_buffer_add_int (&p, &left, fd);
8845 remote_buffer_add_string (&p, &left, ",");
8847 remote_buffer_add_int (&p, &left, offset);
8848 remote_buffer_add_string (&p, &left, ",");
8850 p += remote_escape_output (write_buf, len, p, &out_len,
8851 get_remote_packet_size () - (p - rs->buf));
8853 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite,
8854 remote_errno, NULL, NULL);
8857 /* Read up to LEN bytes FD on the remote target into READ_BUF
8858 Return the number of bytes read, or -1 if an error occurs (and
8859 set *REMOTE_ERRNO). */
8862 remote_hostio_pread (int fd, gdb_byte *read_buf, int len,
8863 ULONGEST offset, int *remote_errno)
8865 struct remote_state *rs = get_remote_state ();
8868 int left = get_remote_packet_size ();
8869 int ret, attachment_len;
8872 remote_buffer_add_string (&p, &left, "vFile:pread:");
8874 remote_buffer_add_int (&p, &left, fd);
8875 remote_buffer_add_string (&p, &left, ",");
8877 remote_buffer_add_int (&p, &left, len);
8878 remote_buffer_add_string (&p, &left, ",");
8880 remote_buffer_add_int (&p, &left, offset);
8882 ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread,
8883 remote_errno, &attachment,
8889 read_len = remote_unescape_input (attachment, attachment_len,
8891 if (read_len != ret)
8892 error (_("Read returned %d, but %d bytes."), ret, (int) read_len);
8897 /* Close FD on the remote target. Return 0, or -1 if an error occurs
8898 (and set *REMOTE_ERRNO). */
8901 remote_hostio_close (int fd, int *remote_errno)
8903 struct remote_state *rs = get_remote_state ();
8905 int left = get_remote_packet_size () - 1;
8907 remote_buffer_add_string (&p, &left, "vFile:close:");
8909 remote_buffer_add_int (&p, &left, fd);
8911 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close,
8912 remote_errno, NULL, NULL);
8915 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
8916 occurs (and set *REMOTE_ERRNO). */
8919 remote_hostio_unlink (const char *filename, int *remote_errno)
8921 struct remote_state *rs = get_remote_state ();
8923 int left = get_remote_packet_size () - 1;
8925 remote_buffer_add_string (&p, &left, "vFile:unlink:");
8927 remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
8930 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink,
8931 remote_errno, NULL, NULL);
8935 remote_fileio_errno_to_host (int errnum)
8959 case FILEIO_ENOTDIR:
8979 case FILEIO_ENAMETOOLONG:
8980 return ENAMETOOLONG;
8986 remote_hostio_error (int errnum)
8988 int host_error = remote_fileio_errno_to_host (errnum);
8990 if (host_error == -1)
8991 error (_("Unknown remote I/O error %d"), errnum);
8993 error (_("Remote I/O error: %s"), safe_strerror (host_error));
8997 remote_hostio_close_cleanup (void *opaque)
8999 int fd = *(int *) opaque;
9002 remote_hostio_close (fd, &remote_errno);
9007 remote_bfd_iovec_open (struct bfd *abfd, void *open_closure)
9009 const char *filename = bfd_get_filename (abfd);
9010 int fd, remote_errno;
9013 gdb_assert (remote_filename_p (filename));
9015 fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno);
9018 errno = remote_fileio_errno_to_host (remote_errno);
9019 bfd_set_error (bfd_error_system_call);
9023 stream = xmalloc (sizeof (int));
9029 remote_bfd_iovec_close (struct bfd *abfd, void *stream)
9031 int fd = *(int *)stream;
9036 /* Ignore errors on close; these may happen if the remote
9037 connection was already torn down. */
9038 remote_hostio_close (fd, &remote_errno);
9044 remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf,
9045 file_ptr nbytes, file_ptr offset)
9047 int fd = *(int *)stream;
9049 file_ptr pos, bytes;
9052 while (nbytes > pos)
9054 bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos,
9055 offset + pos, &remote_errno);
9057 /* Success, but no bytes, means end-of-file. */
9061 errno = remote_fileio_errno_to_host (remote_errno);
9062 bfd_set_error (bfd_error_system_call);
9073 remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb)
9075 /* FIXME: We should probably implement remote_hostio_stat. */
9076 sb->st_size = INT_MAX;
9081 remote_filename_p (const char *filename)
9083 return strncmp (filename, "remote:", 7) == 0;
9087 remote_bfd_open (const char *remote_file, const char *target)
9089 return bfd_openr_iovec (remote_file, target,
9090 remote_bfd_iovec_open, NULL,
9091 remote_bfd_iovec_pread,
9092 remote_bfd_iovec_close,
9093 remote_bfd_iovec_stat);
9097 remote_file_put (const char *local_file, const char *remote_file, int from_tty)
9099 struct cleanup *back_to, *close_cleanup;
9100 int retcode, fd, remote_errno, bytes, io_size;
9103 int bytes_in_buffer;
9108 error (_("command can only be used with remote target"));
9110 file = fopen (local_file, "rb");
9112 perror_with_name (local_file);
9113 back_to = make_cleanup_fclose (file);
9115 fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT
9117 0700, &remote_errno);
9119 remote_hostio_error (remote_errno);
9121 /* Send up to this many bytes at once. They won't all fit in the
9122 remote packet limit, so we'll transfer slightly fewer. */
9123 io_size = get_remote_packet_size ();
9124 buffer = xmalloc (io_size);
9125 make_cleanup (xfree, buffer);
9127 close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd);
9129 bytes_in_buffer = 0;
9132 while (bytes_in_buffer || !saw_eof)
9136 bytes = fread (buffer + bytes_in_buffer, 1, io_size - bytes_in_buffer,
9141 error (_("Error reading %s."), local_file);
9144 /* EOF. Unless there is something still in the
9145 buffer from the last iteration, we are done. */
9147 if (bytes_in_buffer == 0)
9155 bytes += bytes_in_buffer;
9156 bytes_in_buffer = 0;
9158 retcode = remote_hostio_pwrite (fd, buffer, bytes, offset, &remote_errno);
9161 remote_hostio_error (remote_errno);
9162 else if (retcode == 0)
9163 error (_("Remote write of %d bytes returned 0!"), bytes);
9164 else if (retcode < bytes)
9166 /* Short write. Save the rest of the read data for the next
9168 bytes_in_buffer = bytes - retcode;
9169 memmove (buffer, buffer + retcode, bytes_in_buffer);
9175 discard_cleanups (close_cleanup);
9176 if (remote_hostio_close (fd, &remote_errno))
9177 remote_hostio_error (remote_errno);
9180 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file);
9181 do_cleanups (back_to);
9185 remote_file_get (const char *remote_file, const char *local_file, int from_tty)
9187 struct cleanup *back_to, *close_cleanup;
9188 int fd, remote_errno, bytes, io_size;
9194 error (_("command can only be used with remote target"));
9196 fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno);
9198 remote_hostio_error (remote_errno);
9200 file = fopen (local_file, "wb");
9202 perror_with_name (local_file);
9203 back_to = make_cleanup_fclose (file);
9205 /* Send up to this many bytes at once. They won't all fit in the
9206 remote packet limit, so we'll transfer slightly fewer. */
9207 io_size = get_remote_packet_size ();
9208 buffer = xmalloc (io_size);
9209 make_cleanup (xfree, buffer);
9211 close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd);
9216 bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno);
9218 /* Success, but no bytes, means end-of-file. */
9221 remote_hostio_error (remote_errno);
9225 bytes = fwrite (buffer, 1, bytes, file);
9227 perror_with_name (local_file);
9230 discard_cleanups (close_cleanup);
9231 if (remote_hostio_close (fd, &remote_errno))
9232 remote_hostio_error (remote_errno);
9235 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file);
9236 do_cleanups (back_to);
9240 remote_file_delete (const char *remote_file, int from_tty)
9242 int retcode, remote_errno;
9245 error (_("command can only be used with remote target"));
9247 retcode = remote_hostio_unlink (remote_file, &remote_errno);
9249 remote_hostio_error (remote_errno);
9252 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file);
9256 remote_put_command (char *args, int from_tty)
9258 struct cleanup *back_to;
9262 error_no_arg (_("file to put"));
9264 argv = gdb_buildargv (args);
9265 back_to = make_cleanup_freeargv (argv);
9266 if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL)
9267 error (_("Invalid parameters to remote put"));
9269 remote_file_put (argv[0], argv[1], from_tty);
9271 do_cleanups (back_to);
9275 remote_get_command (char *args, int from_tty)
9277 struct cleanup *back_to;
9281 error_no_arg (_("file to get"));
9283 argv = gdb_buildargv (args);
9284 back_to = make_cleanup_freeargv (argv);
9285 if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL)
9286 error (_("Invalid parameters to remote get"));
9288 remote_file_get (argv[0], argv[1], from_tty);
9290 do_cleanups (back_to);
9294 remote_delete_command (char *args, int from_tty)
9296 struct cleanup *back_to;
9300 error_no_arg (_("file to delete"));
9302 argv = gdb_buildargv (args);
9303 back_to = make_cleanup_freeargv (argv);
9304 if (argv[0] == NULL || argv[1] != NULL)
9305 error (_("Invalid parameters to remote delete"));
9307 remote_file_delete (argv[0], from_tty);
9309 do_cleanups (back_to);
9313 remote_command (char *args, int from_tty)
9315 help_list (remote_cmdlist, "remote ", -1, gdb_stdout);
9319 remote_can_execute_reverse (void)
9321 if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE
9322 || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE)
9329 remote_supports_non_stop (void)
9335 remote_supports_multi_process (void)
9337 struct remote_state *rs = get_remote_state ();
9338 return remote_multi_process_p (rs);
9342 remote_supports_cond_tracepoints (void)
9344 struct remote_state *rs = get_remote_state ();
9345 return rs->cond_tracepoints;
9349 remote_supports_fast_tracepoints (void)
9351 struct remote_state *rs = get_remote_state ();
9352 return rs->fast_tracepoints;
9356 remote_trace_init (void)
9359 remote_get_noisy_reply (&target_buf, &target_buf_size);
9360 if (strcmp (target_buf, "OK") != 0)
9361 error (_("Target does not support this command."));
9364 static void free_actions_list (char **actions_list);
9365 static void free_actions_list_cleanup_wrapper (void *);
9367 free_actions_list_cleanup_wrapper (void *al)
9369 free_actions_list (al);
9373 free_actions_list (char **actions_list)
9377 if (actions_list == 0)
9380 for (ndx = 0; actions_list[ndx]; ndx++)
9381 xfree (actions_list[ndx]);
9383 xfree (actions_list);
9386 /* Recursive routine to walk through command list including loops, and
9387 download packets for each command. */
9390 remote_download_command_source (int num, ULONGEST addr,
9391 struct command_line *cmds)
9393 struct remote_state *rs = get_remote_state ();
9394 struct command_line *cmd;
9396 for (cmd = cmds; cmd; cmd = cmd->next)
9398 QUIT; /* allow user to bail out with ^C */
9399 strcpy (rs->buf, "QTDPsrc:");
9400 encode_source_string (num, addr, "cmd", cmd->line,
9401 rs->buf + strlen (rs->buf),
9402 rs->buf_size - strlen (rs->buf));
9404 remote_get_noisy_reply (&target_buf, &target_buf_size);
9405 if (strcmp (target_buf, "OK"))
9406 warning (_("Target does not support source download."));
9408 if (cmd->control_type == while_control
9409 || cmd->control_type == while_stepping_control)
9411 remote_download_command_source (num, addr, *cmd->body_list);
9413 QUIT; /* allow user to bail out with ^C */
9414 strcpy (rs->buf, "QTDPsrc:");
9415 encode_source_string (num, addr, "cmd", "end",
9416 rs->buf + strlen (rs->buf),
9417 rs->buf_size - strlen (rs->buf));
9419 remote_get_noisy_reply (&target_buf, &target_buf_size);
9420 if (strcmp (target_buf, "OK"))
9421 warning (_("Target does not support source download."));
9427 remote_download_tracepoint (struct breakpoint *t)
9429 struct bp_location *loc;
9434 char **stepping_actions;
9436 struct cleanup *old_chain = NULL;
9437 struct agent_expr *aexpr;
9438 struct cleanup *aexpr_chain = NULL;
9441 /* Iterate over all the tracepoint locations. It's up to the target to
9442 notice multiple tracepoint packets with the same number but different
9443 addresses, and treat them as multiple locations. */
9444 for (loc = t->loc; loc; loc = loc->next)
9446 encode_actions (t, loc, &tdp_actions, &stepping_actions);
9447 old_chain = make_cleanup (free_actions_list_cleanup_wrapper,
9449 (void) make_cleanup (free_actions_list_cleanup_wrapper, stepping_actions);
9451 tpaddr = loc->address;
9452 sprintf_vma (addrbuf, tpaddr);
9453 sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", t->number,
9454 addrbuf, /* address */
9455 (t->enable_state == bp_enabled ? 'E' : 'D'),
9456 t->step_count, t->pass_count);
9457 /* Fast tracepoints are mostly handled by the target, but we can
9458 tell the target how big of an instruction block should be moved
9460 if (t->type == bp_fast_tracepoint)
9462 /* Only test for support at download time; we may not know
9463 target capabilities at definition time. */
9464 if (remote_supports_fast_tracepoints ())
9468 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch,
9469 tpaddr, &isize, NULL))
9470 sprintf (buf + strlen (buf), ":F%x", isize);
9472 /* If it passed validation at definition but fails now,
9473 something is very wrong. */
9474 internal_error (__FILE__, __LINE__,
9475 "Fast tracepoint not valid during download");
9478 /* Fast tracepoints are functionally identical to regular
9479 tracepoints, so don't take lack of support as a reason to
9480 give up on the trace run. */
9481 warning (_("Target does not support fast tracepoints, downloading %d as regular tracepoint"), t->number);
9483 /* If the tracepoint has a conditional, make it into an agent
9484 expression and append to the definition. */
9487 /* Only test support at download time, we may not know target
9488 capabilities at definition time. */
9489 if (remote_supports_cond_tracepoints ())
9491 aexpr = gen_eval_for_expr (tpaddr, loc->cond);
9492 aexpr_chain = make_cleanup_free_agent_expr (aexpr);
9493 sprintf (buf + strlen (buf), ":X%x,", aexpr->len);
9494 pkt = buf + strlen (buf);
9495 for (ndx = 0; ndx < aexpr->len; ++ndx)
9496 pkt = pack_hex_byte (pkt, aexpr->buf[ndx]);
9498 do_cleanups (aexpr_chain);
9501 warning (_("Target does not support conditional tracepoints, ignoring tp %d cond"), t->number);
9504 if (t->commands || *default_collect)
9507 remote_get_noisy_reply (&target_buf, &target_buf_size);
9508 if (strcmp (target_buf, "OK"))
9509 error (_("Target does not support tracepoints."));
9511 /* do_single_steps (t); */
9514 for (ndx = 0; tdp_actions[ndx]; ndx++)
9516 QUIT; /* allow user to bail out with ^C */
9517 sprintf (buf, "QTDP:-%x:%s:%s%c",
9518 t->number, addrbuf, /* address */
9520 ((tdp_actions[ndx + 1] || stepping_actions)
9523 remote_get_noisy_reply (&target_buf,
9525 if (strcmp (target_buf, "OK"))
9526 error (_("Error on target while setting tracepoints."));
9529 if (stepping_actions)
9531 for (ndx = 0; stepping_actions[ndx]; ndx++)
9533 QUIT; /* allow user to bail out with ^C */
9534 sprintf (buf, "QTDP:-%x:%s:%s%s%s",
9535 t->number, addrbuf, /* address */
9536 ((ndx == 0) ? "S" : ""),
9537 stepping_actions[ndx],
9538 (stepping_actions[ndx + 1] ? "-" : ""));
9540 remote_get_noisy_reply (&target_buf,
9542 if (strcmp (target_buf, "OK"))
9543 error (_("Error on target while setting tracepoints."));
9547 if (remote_protocol_packets[PACKET_TracepointSource].support == PACKET_ENABLE)
9551 strcpy (buf, "QTDPsrc:");
9552 encode_source_string (t->number, loc->address,
9553 "at", t->addr_string, buf + strlen (buf),
9554 2048 - strlen (buf));
9557 remote_get_noisy_reply (&target_buf, &target_buf_size);
9558 if (strcmp (target_buf, "OK"))
9559 warning (_("Target does not support source download."));
9563 strcpy (buf, "QTDPsrc:");
9564 encode_source_string (t->number, loc->address,
9565 "cond", t->cond_string, buf + strlen (buf),
9566 2048 - strlen (buf));
9568 remote_get_noisy_reply (&target_buf, &target_buf_size);
9569 if (strcmp (target_buf, "OK"))
9570 warning (_("Target does not support source download."));
9572 remote_download_command_source (t->number, loc->address,
9573 breakpoint_commands (t));
9576 do_cleanups (old_chain);
9581 remote_download_trace_state_variable (struct trace_state_variable *tsv)
9583 struct remote_state *rs = get_remote_state ();
9586 sprintf (rs->buf, "QTDV:%x:%s:%x:",
9587 tsv->number, phex ((ULONGEST) tsv->initial_value, 8), tsv->builtin);
9588 p = rs->buf + strlen (rs->buf);
9589 if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ())
9590 error (_("Trace state variable name too long for tsv definition packet"));
9591 p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0);
9594 remote_get_noisy_reply (&target_buf, &target_buf_size);
9595 if (*target_buf == '\0')
9596 error (_("Target does not support this command."));
9597 if (strcmp (target_buf, "OK") != 0)
9598 error (_("Error on target while downloading trace state variable."));
9602 remote_trace_set_readonly_regions (void)
9610 return; /* No information to give. */
9612 strcpy (target_buf, "QTro");
9613 for (s = exec_bfd->sections; s; s = s->next)
9615 char tmp1[40], tmp2[40];
9617 if ((s->flags & SEC_LOAD) == 0 ||
9618 /* (s->flags & SEC_CODE) == 0 || */
9619 (s->flags & SEC_READONLY) == 0)
9624 size = bfd_get_section_size (s);
9625 sprintf_vma (tmp1, lma);
9626 sprintf_vma (tmp2, lma + size);
9627 sprintf (target_buf + strlen (target_buf),
9628 ":%s,%s", tmp1, tmp2);
9632 putpkt (target_buf);
9633 getpkt (&target_buf, &target_buf_size, 0);
9638 remote_trace_start (void)
9641 remote_get_noisy_reply (&target_buf, &target_buf_size);
9642 if (*target_buf == '\0')
9643 error (_("Target does not support this command."));
9644 if (strcmp (target_buf, "OK") != 0)
9645 error (_("Bogus reply from target: %s"), target_buf);
9649 remote_get_trace_status (struct trace_status *ts)
9652 /* FIXME we need to get register block size some other way */
9653 extern int trace_regblock_size;
9654 trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet;
9656 putpkt ("qTStatus");
9657 p = remote_get_noisy_reply (&target_buf, &target_buf_size);
9659 /* If the remote target doesn't do tracing, flag it. */
9663 /* We're working with a live target. */
9666 /* Set some defaults. */
9667 ts->running_known = 0;
9668 ts->stop_reason = trace_stop_reason_unknown;
9669 ts->traceframe_count = -1;
9670 ts->buffer_free = 0;
9673 error (_("Bogus trace status reply from target: %s"), target_buf);
9675 parse_trace_status (p, ts);
9681 remote_trace_stop (void)
9684 remote_get_noisy_reply (&target_buf, &target_buf_size);
9685 if (*target_buf == '\0')
9686 error (_("Target does not support this command."));
9687 if (strcmp (target_buf, "OK") != 0)
9688 error (_("Bogus reply from target: %s"), target_buf);
9692 remote_trace_find (enum trace_find_type type, int num,
9693 ULONGEST addr1, ULONGEST addr2,
9696 struct remote_state *rs = get_remote_state ();
9698 int target_frameno = -1, target_tracept = -1;
9701 strcpy (p, "QTFrame:");
9702 p = strchr (p, '\0');
9706 sprintf (p, "%x", num);
9709 sprintf (p, "pc:%s", phex_nz (addr1, 0));
9712 sprintf (p, "tdp:%x", num);
9715 sprintf (p, "range:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0));
9718 sprintf (p, "outside:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0));
9721 error ("Unknown trace find type %d", type);
9725 reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt);
9727 error (_("Target does not support this command."));
9729 while (reply && *reply)
9734 target_frameno = (int) strtol (p, &reply, 16);
9736 error (_("Unable to parse trace frame number"));
9737 if (target_frameno == -1)
9742 target_tracept = (int) strtol (p, &reply, 16);
9744 error (_("Unable to parse tracepoint number"));
9746 case 'O': /* "OK"? */
9747 if (reply[1] == 'K' && reply[2] == '\0')
9750 error (_("Bogus reply from target: %s"), reply);
9753 error (_("Bogus reply from target: %s"), reply);
9756 *tpp = target_tracept;
9757 return target_frameno;
9761 remote_get_trace_state_variable_value (int tsvnum, LONGEST *val)
9763 struct remote_state *rs = get_remote_state ();
9767 sprintf (rs->buf, "qTV:%x", tsvnum);
9769 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
9770 if (reply && *reply)
9774 unpack_varlen_hex (reply + 1, &uval);
9775 *val = (LONGEST) uval;
9783 remote_save_trace_data (const char *filename)
9785 struct remote_state *rs = get_remote_state ();
9789 strcpy (p, "QTSave:");
9791 if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ())
9792 error (_("Remote file name too long for trace save packet"));
9793 p += 2 * bin2hex ((gdb_byte *) filename, p, 0);
9796 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
9798 error (_("Target does not support this command."));
9799 if (strcmp (reply, "OK") != 0)
9800 error (_("Bogus reply from target: %s"), reply);
9804 /* This is basically a memory transfer, but needs to be its own packet
9805 because we don't know how the target actually organizes its trace
9806 memory, plus we want to be able to ask for as much as possible, but
9807 not be unhappy if we don't get as much as we ask for. */
9810 remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len)
9812 struct remote_state *rs = get_remote_state ();
9818 strcpy (p, "qTBuffer:");
9820 p += hexnumstr (p, offset);
9822 p += hexnumstr (p, len);
9826 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
9827 if (reply && *reply)
9829 /* 'l' by itself means we're at the end of the buffer and
9830 there is nothing more to get. */
9834 /* Convert the reply into binary. Limit the number of bytes to
9835 convert according to our passed-in buffer size, rather than
9836 what was returned in the packet; if the target is
9837 unexpectedly generous and gives us a bigger reply than we
9838 asked for, we don't want to crash. */
9839 rslt = hex2bin (target_buf, buf, len);
9843 /* Something went wrong, flag as an error. */
9848 remote_set_disconnected_tracing (int val)
9850 struct remote_state *rs = get_remote_state ();
9852 if (rs->disconnected_tracing)
9856 sprintf (rs->buf, "QTDisconnected:%x", val);
9858 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
9860 error (_("Target does not support this command."));
9861 if (strcmp (reply, "OK") != 0)
9862 error (_("Bogus reply from target: %s"), reply);
9865 warning (_("Target does not support disconnected tracing."));
9869 remote_core_of_thread (struct target_ops *ops, ptid_t ptid)
9871 struct thread_info *info = find_thread_ptid (ptid);
9872 if (info && info->private)
9873 return info->private->core;
9878 remote_set_circular_trace_buffer (int val)
9880 struct remote_state *rs = get_remote_state ();
9883 sprintf (rs->buf, "QTBuffer:circular:%x", val);
9885 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
9887 error (_("Target does not support this command."));
9888 if (strcmp (reply, "OK") != 0)
9889 error (_("Bogus reply from target: %s"), reply);
9893 init_remote_ops (void)
9895 remote_ops.to_shortname = "remote";
9896 remote_ops.to_longname = "Remote serial target in gdb-specific protocol";
9898 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9899 Specify the serial device it is connected to\n\
9900 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
9901 remote_ops.to_open = remote_open;
9902 remote_ops.to_close = remote_close;
9903 remote_ops.to_detach = remote_detach;
9904 remote_ops.to_disconnect = remote_disconnect;
9905 remote_ops.to_resume = remote_resume;
9906 remote_ops.to_wait = remote_wait;
9907 remote_ops.to_fetch_registers = remote_fetch_registers;
9908 remote_ops.to_store_registers = remote_store_registers;
9909 remote_ops.to_prepare_to_store = remote_prepare_to_store;
9910 remote_ops.deprecated_xfer_memory = remote_xfer_memory;
9911 remote_ops.to_files_info = remote_files_info;
9912 remote_ops.to_insert_breakpoint = remote_insert_breakpoint;
9913 remote_ops.to_remove_breakpoint = remote_remove_breakpoint;
9914 remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint;
9915 remote_ops.to_stopped_data_address = remote_stopped_data_address;
9916 remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
9917 remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
9918 remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
9919 remote_ops.to_insert_watchpoint = remote_insert_watchpoint;
9920 remote_ops.to_remove_watchpoint = remote_remove_watchpoint;
9921 remote_ops.to_kill = remote_kill;
9922 remote_ops.to_load = generic_load;
9923 remote_ops.to_mourn_inferior = remote_mourn;
9924 remote_ops.to_notice_signals = remote_notice_signals;
9925 remote_ops.to_thread_alive = remote_thread_alive;
9926 remote_ops.to_find_new_threads = remote_threads_info;
9927 remote_ops.to_pid_to_str = remote_pid_to_str;
9928 remote_ops.to_extra_thread_info = remote_threads_extra_info;
9929 remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid;
9930 remote_ops.to_stop = remote_stop;
9931 remote_ops.to_xfer_partial = remote_xfer_partial;
9932 remote_ops.to_rcmd = remote_rcmd;
9933 remote_ops.to_log_command = serial_log_command;
9934 remote_ops.to_get_thread_local_address = remote_get_thread_local_address;
9935 remote_ops.to_stratum = process_stratum;
9936 remote_ops.to_has_all_memory = default_child_has_all_memory;
9937 remote_ops.to_has_memory = default_child_has_memory;
9938 remote_ops.to_has_stack = default_child_has_stack;
9939 remote_ops.to_has_registers = default_child_has_registers;
9940 remote_ops.to_has_execution = default_child_has_execution;
9941 remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
9942 remote_ops.to_can_execute_reverse = remote_can_execute_reverse;
9943 remote_ops.to_magic = OPS_MAGIC;
9944 remote_ops.to_memory_map = remote_memory_map;
9945 remote_ops.to_flash_erase = remote_flash_erase;
9946 remote_ops.to_flash_done = remote_flash_done;
9947 remote_ops.to_read_description = remote_read_description;
9948 remote_ops.to_search_memory = remote_search_memory;
9949 remote_ops.to_can_async_p = remote_can_async_p;
9950 remote_ops.to_is_async_p = remote_is_async_p;
9951 remote_ops.to_async = remote_async;
9952 remote_ops.to_async_mask = remote_async_mask;
9953 remote_ops.to_terminal_inferior = remote_terminal_inferior;
9954 remote_ops.to_terminal_ours = remote_terminal_ours;
9955 remote_ops.to_supports_non_stop = remote_supports_non_stop;
9956 remote_ops.to_supports_multi_process = remote_supports_multi_process;
9957 remote_ops.to_trace_init = remote_trace_init;
9958 remote_ops.to_download_tracepoint = remote_download_tracepoint;
9959 remote_ops.to_download_trace_state_variable = remote_download_trace_state_variable;
9960 remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions;
9961 remote_ops.to_trace_start = remote_trace_start;
9962 remote_ops.to_get_trace_status = remote_get_trace_status;
9963 remote_ops.to_trace_stop = remote_trace_stop;
9964 remote_ops.to_trace_find = remote_trace_find;
9965 remote_ops.to_get_trace_state_variable_value = remote_get_trace_state_variable_value;
9966 remote_ops.to_save_trace_data = remote_save_trace_data;
9967 remote_ops.to_upload_tracepoints = remote_upload_tracepoints;
9968 remote_ops.to_upload_trace_state_variables = remote_upload_trace_state_variables;
9969 remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data;
9970 remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing;
9971 remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer;
9972 remote_ops.to_core_of_thread = remote_core_of_thread;
9973 remote_ops.to_verify_memory = remote_verify_memory;
9974 remote_ops.to_get_tib_address = remote_get_tib_address;
9977 /* Set up the extended remote vector by making a copy of the standard
9978 remote vector and adding to it. */
9981 init_extended_remote_ops (void)
9983 extended_remote_ops = remote_ops;
9985 extended_remote_ops.to_shortname = "extended-remote";
9986 extended_remote_ops.to_longname =
9987 "Extended remote serial target in gdb-specific protocol";
9988 extended_remote_ops.to_doc =
9989 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9990 Specify the serial device it is connected to (e.g. /dev/ttya).";
9991 extended_remote_ops.to_open = extended_remote_open;
9992 extended_remote_ops.to_create_inferior = extended_remote_create_inferior;
9993 extended_remote_ops.to_mourn_inferior = extended_remote_mourn;
9994 extended_remote_ops.to_detach = extended_remote_detach;
9995 extended_remote_ops.to_attach = extended_remote_attach;
9996 extended_remote_ops.to_kill = extended_remote_kill;
10000 remote_can_async_p (void)
10002 if (!target_async_permitted)
10003 /* We only enable async when the user specifically asks for it. */
10006 /* We're async whenever the serial device is. */
10007 return remote_async_mask_value && serial_can_async_p (remote_desc);
10011 remote_is_async_p (void)
10013 if (!target_async_permitted)
10014 /* We only enable async when the user specifically asks for it. */
10017 /* We're async whenever the serial device is. */
10018 return remote_async_mask_value && serial_is_async_p (remote_desc);
10021 /* Pass the SERIAL event on and up to the client. One day this code
10022 will be able to delay notifying the client of an event until the
10023 point where an entire packet has been received. */
10025 static void (*async_client_callback) (enum inferior_event_type event_type,
10027 static void *async_client_context;
10028 static serial_event_ftype remote_async_serial_handler;
10031 remote_async_serial_handler (struct serial *scb, void *context)
10033 /* Don't propogate error information up to the client. Instead let
10034 the client find out about the error by querying the target. */
10035 async_client_callback (INF_REG_EVENT, async_client_context);
10039 remote_async_inferior_event_handler (gdb_client_data data)
10041 inferior_event_handler (INF_REG_EVENT, NULL);
10045 remote_async_get_pending_events_handler (gdb_client_data data)
10047 remote_get_pending_stop_replies ();
10051 remote_async (void (*callback) (enum inferior_event_type event_type,
10052 void *context), void *context)
10054 if (remote_async_mask_value == 0)
10055 internal_error (__FILE__, __LINE__,
10056 _("Calling remote_async when async is masked"));
10058 if (callback != NULL)
10060 serial_async (remote_desc, remote_async_serial_handler, NULL);
10061 async_client_callback = callback;
10062 async_client_context = context;
10065 serial_async (remote_desc, NULL, NULL);
10069 remote_async_mask (int new_mask)
10071 int curr_mask = remote_async_mask_value;
10072 remote_async_mask_value = new_mask;
10077 set_remote_cmd (char *args, int from_tty)
10079 help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout);
10083 show_remote_cmd (char *args, int from_tty)
10085 /* We can't just use cmd_show_list here, because we want to skip
10086 the redundant "show remote Z-packet" and the legacy aliases. */
10087 struct cleanup *showlist_chain;
10088 struct cmd_list_element *list = remote_show_cmdlist;
10090 showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist");
10091 for (; list != NULL; list = list->next)
10092 if (strcmp (list->name, "Z-packet") == 0)
10094 else if (list->type == not_set_cmd)
10095 /* Alias commands are exactly like the original, except they
10096 don't have the normal type. */
10100 struct cleanup *option_chain
10101 = make_cleanup_ui_out_tuple_begin_end (uiout, "option");
10102 ui_out_field_string (uiout, "name", list->name);
10103 ui_out_text (uiout, ": ");
10104 if (list->type == show_cmd)
10105 do_setshow_command ((char *) NULL, from_tty, list);
10107 cmd_func (list, NULL, from_tty);
10108 /* Close the tuple. */
10109 do_cleanups (option_chain);
10112 /* Close the tuple. */
10113 do_cleanups (showlist_chain);
10117 /* Function to be called whenever a new objfile (shlib) is detected. */
10119 remote_new_objfile (struct objfile *objfile)
10121 if (remote_desc != 0) /* Have a remote connection. */
10122 remote_check_symbols (objfile);
10125 /* Pull all the tracepoints defined on the target and create local
10126 data structures representing them. We don't want to create real
10127 tracepoints yet, we don't want to mess up the user's existing
10131 remote_upload_tracepoints (struct uploaded_tp **utpp)
10133 struct remote_state *rs = get_remote_state ();
10136 /* Ask for a first packet of tracepoint definition. */
10138 getpkt (&rs->buf, &rs->buf_size, 0);
10140 while (*p && *p != 'l')
10142 parse_tracepoint_definition (p, utpp);
10143 /* Ask for another packet of tracepoint definition. */
10145 getpkt (&rs->buf, &rs->buf_size, 0);
10152 remote_upload_trace_state_variables (struct uploaded_tsv **utsvp)
10154 struct remote_state *rs = get_remote_state ();
10157 /* Ask for a first packet of variable definition. */
10159 getpkt (&rs->buf, &rs->buf_size, 0);
10161 while (*p && *p != 'l')
10163 parse_tsv_definition (p, utsvp);
10164 /* Ask for another packet of variable definition. */
10166 getpkt (&rs->buf, &rs->buf_size, 0);
10173 _initialize_remote (void)
10175 struct remote_state *rs;
10176 struct cmd_list_element *cmd;
10179 /* architecture specific data */
10180 remote_gdbarch_data_handle =
10181 gdbarch_data_register_post_init (init_remote_state);
10182 remote_g_packet_data_handle =
10183 gdbarch_data_register_pre_init (remote_g_packet_data_init);
10185 /* Initialize the per-target state. At the moment there is only one
10186 of these, not one per target. Only one target is active at a
10187 time. The default buffer size is unimportant; it will be expanded
10188 whenever a larger buffer is needed. */
10189 rs = get_remote_state_raw ();
10190 rs->buf_size = 400;
10191 rs->buf = xmalloc (rs->buf_size);
10193 init_remote_ops ();
10194 add_target (&remote_ops);
10196 init_extended_remote_ops ();
10197 add_target (&extended_remote_ops);
10199 /* Hook into new objfile notification. */
10200 observer_attach_new_objfile (remote_new_objfile);
10202 /* Set up signal handlers. */
10203 sigint_remote_token =
10204 create_async_signal_handler (async_remote_interrupt, NULL);
10205 sigint_remote_twice_token =
10206 create_async_signal_handler (inferior_event_handler_wrapper, NULL);
10209 init_remote_threadtests ();
10212 /* set/show remote ... */
10214 add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\
10215 Remote protocol specific variables\n\
10216 Configure various remote-protocol specific variables such as\n\
10217 the packets being used"),
10218 &remote_set_cmdlist, "set remote ",
10219 0 /* allow-unknown */, &setlist);
10220 add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\
10221 Remote protocol specific variables\n\
10222 Configure various remote-protocol specific variables such as\n\
10223 the packets being used"),
10224 &remote_show_cmdlist, "show remote ",
10225 0 /* allow-unknown */, &showlist);
10227 add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\
10228 Compare section data on target to the exec file.\n\
10229 Argument is a single section name (default: all loaded sections)."),
10232 add_cmd ("packet", class_maintenance, packet_command, _("\
10233 Send an arbitrary packet to a remote target.\n\
10234 maintenance packet TEXT\n\
10235 If GDB is talking to an inferior via the GDB serial protocol, then\n\
10236 this command sends the string TEXT to the inferior, and displays the\n\
10237 response packet. GDB supplies the initial `$' character, and the\n\
10238 terminating `#' character and checksum."),
10241 add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\
10242 Set whether to send break if interrupted."), _("\
10243 Show whether to send break if interrupted."), _("\
10244 If set, a break, instead of a cntrl-c, is sent to the remote target."),
10245 set_remotebreak, show_remotebreak,
10246 &setlist, &showlist);
10247 cmd_name = "remotebreak";
10248 cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1);
10249 deprecate_cmd (cmd, "set remote interrupt-sequence");
10250 cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */
10251 cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1);
10252 deprecate_cmd (cmd, "show remote interrupt-sequence");
10254 add_setshow_enum_cmd ("interrupt-sequence", class_support,
10255 interrupt_sequence_modes, &interrupt_sequence_mode, _("\
10256 Set interrupt sequence to remote target."), _("\
10257 Show interrupt sequence to remote target."), _("\
10258 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
10259 NULL, show_interrupt_sequence,
10260 &remote_set_cmdlist,
10261 &remote_show_cmdlist);
10263 add_setshow_boolean_cmd ("interrupt-on-connect", class_support,
10264 &interrupt_on_connect, _("\
10265 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10266 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10267 If set, interrupt sequence is sent to remote target."),
10269 &remote_set_cmdlist, &remote_show_cmdlist);
10271 /* Install commands for configuring memory read/write packets. */
10273 add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\
10274 Set the maximum number of bytes per memory write packet (deprecated)."),
10276 add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\
10277 Show the maximum number of bytes per memory write packet (deprecated)."),
10279 add_cmd ("memory-write-packet-size", no_class,
10280 set_memory_write_packet_size, _("\
10281 Set the maximum number of bytes per memory-write packet.\n\
10282 Specify the number of bytes in a packet or 0 (zero) for the\n\
10283 default packet size. The actual limit is further reduced\n\
10284 dependent on the target. Specify ``fixed'' to disable the\n\
10285 further restriction and ``limit'' to enable that restriction."),
10286 &remote_set_cmdlist);
10287 add_cmd ("memory-read-packet-size", no_class,
10288 set_memory_read_packet_size, _("\
10289 Set the maximum number of bytes per memory-read packet.\n\
10290 Specify the number of bytes in a packet or 0 (zero) for the\n\
10291 default packet size. The actual limit is further reduced\n\
10292 dependent on the target. Specify ``fixed'' to disable the\n\
10293 further restriction and ``limit'' to enable that restriction."),
10294 &remote_set_cmdlist);
10295 add_cmd ("memory-write-packet-size", no_class,
10296 show_memory_write_packet_size,
10297 _("Show the maximum number of bytes per memory-write packet."),
10298 &remote_show_cmdlist);
10299 add_cmd ("memory-read-packet-size", no_class,
10300 show_memory_read_packet_size,
10301 _("Show the maximum number of bytes per memory-read packet."),
10302 &remote_show_cmdlist);
10304 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class,
10305 &remote_hw_watchpoint_limit, _("\
10306 Set the maximum number of target hardware watchpoints."), _("\
10307 Show the maximum number of target hardware watchpoints."), _("\
10308 Specify a negative limit for unlimited."),
10309 NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
10310 &remote_set_cmdlist, &remote_show_cmdlist);
10311 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class,
10312 &remote_hw_breakpoint_limit, _("\
10313 Set the maximum number of target hardware breakpoints."), _("\
10314 Show the maximum number of target hardware breakpoints."), _("\
10315 Specify a negative limit for unlimited."),
10316 NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
10317 &remote_set_cmdlist, &remote_show_cmdlist);
10319 add_setshow_integer_cmd ("remoteaddresssize", class_obscure,
10320 &remote_address_size, _("\
10321 Set the maximum size of the address (in bits) in a memory packet."), _("\
10322 Show the maximum size of the address (in bits) in a memory packet."), NULL,
10324 NULL, /* FIXME: i18n: */
10325 &setlist, &showlist);
10327 add_packet_config_cmd (&remote_protocol_packets[PACKET_X],
10328 "X", "binary-download", 1);
10330 add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont],
10331 "vCont", "verbose-resume", 0);
10333 add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals],
10334 "QPassSignals", "pass-signals", 0);
10336 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol],
10337 "qSymbol", "symbol-lookup", 0);
10339 add_packet_config_cmd (&remote_protocol_packets[PACKET_P],
10340 "P", "set-register", 1);
10342 add_packet_config_cmd (&remote_protocol_packets[PACKET_p],
10343 "p", "fetch-register", 1);
10345 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0],
10346 "Z0", "software-breakpoint", 0);
10348 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1],
10349 "Z1", "hardware-breakpoint", 0);
10351 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2],
10352 "Z2", "write-watchpoint", 0);
10354 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3],
10355 "Z3", "read-watchpoint", 0);
10357 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4],
10358 "Z4", "access-watchpoint", 0);
10360 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv],
10361 "qXfer:auxv:read", "read-aux-vector", 0);
10363 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features],
10364 "qXfer:features:read", "target-features", 0);
10366 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries],
10367 "qXfer:libraries:read", "library-info", 0);
10369 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map],
10370 "qXfer:memory-map:read", "memory-map", 0);
10372 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read],
10373 "qXfer:spu:read", "read-spu-object", 0);
10375 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write],
10376 "qXfer:spu:write", "write-spu-object", 0);
10378 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata],
10379 "qXfer:osdata:read", "osdata", 0);
10381 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads],
10382 "qXfer:threads:read", "threads", 0);
10384 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read],
10385 "qXfer:siginfo:read", "read-siginfo-object", 0);
10387 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write],
10388 "qXfer:siginfo:write", "write-siginfo-object", 0);
10390 add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr],
10391 "qGetTLSAddr", "get-thread-local-storage-address",
10394 add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr],
10395 "qGetTIBAddr", "get-thread-information-block-address",
10398 add_packet_config_cmd (&remote_protocol_packets[PACKET_bc],
10399 "bc", "reverse-continue", 0);
10401 add_packet_config_cmd (&remote_protocol_packets[PACKET_bs],
10402 "bs", "reverse-step", 0);
10404 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported],
10405 "qSupported", "supported-packets", 0);
10407 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory],
10408 "qSearch:memory", "search-memory", 0);
10410 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open],
10411 "vFile:open", "hostio-open", 0);
10413 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread],
10414 "vFile:pread", "hostio-pread", 0);
10416 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite],
10417 "vFile:pwrite", "hostio-pwrite", 0);
10419 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close],
10420 "vFile:close", "hostio-close", 0);
10422 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink],
10423 "vFile:unlink", "hostio-unlink", 0);
10425 add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach],
10426 "vAttach", "attach", 0);
10428 add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun],
10431 add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode],
10432 "QStartNoAckMode", "noack", 0);
10434 add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill],
10435 "vKill", "kill", 0);
10437 add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached],
10438 "qAttached", "query-attached", 0);
10440 add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints],
10441 "ConditionalTracepoints", "conditional-tracepoints", 0);
10442 add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints],
10443 "FastTracepoints", "fast-tracepoints", 0);
10445 add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource],
10446 "TracepointSource", "TracepointSource", 0);
10448 /* Keep the old ``set remote Z-packet ...'' working. Each individual
10449 Z sub-packet has its own set and show commands, but users may
10450 have sets to this variable in their .gdbinit files (or in their
10452 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure,
10453 &remote_Z_packet_detect, _("\
10454 Set use of remote protocol `Z' packets"), _("\
10455 Show use of remote protocol `Z' packets "), _("\
10456 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
10458 set_remote_protocol_Z_packet_cmd,
10459 show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
10460 &remote_set_cmdlist, &remote_show_cmdlist);
10462 add_prefix_cmd ("remote", class_files, remote_command, _("\
10463 Manipulate files on the remote system\n\
10464 Transfer files to and from the remote target system."),
10465 &remote_cmdlist, "remote ",
10466 0 /* allow-unknown */, &cmdlist);
10468 add_cmd ("put", class_files, remote_put_command,
10469 _("Copy a local file to the remote system."),
10472 add_cmd ("get", class_files, remote_get_command,
10473 _("Copy a remote file to the local system."),
10476 add_cmd ("delete", class_files, remote_delete_command,
10477 _("Delete a remote file."),
10480 remote_exec_file = xstrdup ("");
10481 add_setshow_string_noescape_cmd ("exec-file", class_files,
10482 &remote_exec_file, _("\
10483 Set the remote pathname for \"run\""), _("\
10484 Show the remote pathname for \"run\""), NULL, NULL, NULL,
10485 &remote_set_cmdlist, &remote_show_cmdlist);
10487 /* Eventually initialize fileio. See fileio.c */
10488 initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist);
10490 /* Take advantage of the fact that the LWP field is not used, to tag
10491 special ptids with it set to != 0. */
10492 magic_null_ptid = ptid_build (42000, 1, -1);
10493 not_sent_ptid = ptid_build (42000, 1, -2);
10494 any_thread_ptid = ptid_build (42000, 1, 0);
10496 target_buf_size = 2048;
10497 target_buf = xmalloc (target_buf_size);