1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
37 #include "remote-notif.h"
42 #include "cli/cli-decode.h"
43 #include "cli/cli-setshow.h"
44 #include "target-descriptions.h"
46 #include "filestuff.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"
73 /* Temp hacks for tracepoint encoding migration. */
74 static char *target_buf;
75 static long target_buf_size;
77 /* The size to align memory write packets, when practical. The protocol
78 does not guarantee any alignment, and gdb will generate short
79 writes and unaligned writes, but even as a best-effort attempt this
80 can improve bulk transfers. For instance, if a write is misaligned
81 relative to the target's data bus, the stub may need to make an extra
82 round trip fetching data from the target. This doesn't make a
83 huge difference, but it's easy to do, so we try to be helpful.
85 The alignment chosen is arbitrary; usually data bus width is
86 important here, not the possibly larger cache line size. */
87 enum { REMOTE_ALIGN_WRITES = 16 };
89 /* Prototypes for local functions. */
90 static void async_cleanup_sigint_signal_handler (void *dummy);
91 static int getpkt_sane (char **buf, long *sizeof_buf, int forever);
92 static int getpkt_or_notif_sane (char **buf, long *sizeof_buf,
93 int forever, int *is_notif);
95 static void async_handle_remote_sigint (int);
96 static void async_handle_remote_sigint_twice (int);
98 static void remote_files_info (struct target_ops *ignore);
100 static void remote_prepare_to_store (struct target_ops *self,
101 struct regcache *regcache);
103 static void remote_open_1 (const char *, int, struct target_ops *,
106 static void remote_close (struct target_ops *self);
108 static void remote_mourn (struct target_ops *ops);
110 static void extended_remote_restart (void);
112 static void extended_remote_mourn (struct target_ops *);
114 static void remote_mourn_1 (struct target_ops *);
116 static void remote_send (char **buf, long *sizeof_buf_p);
118 static int readchar (int timeout);
120 static void remote_serial_write (const char *str, int len);
122 static void remote_kill (struct target_ops *ops);
124 static int remote_can_async_p (struct target_ops *);
126 static int remote_is_async_p (struct target_ops *);
128 static void remote_async (struct target_ops *ops,
129 void (*callback) (enum inferior_event_type event_type,
133 static void sync_remote_interrupt_twice (int signo);
135 static void interrupt_query (void);
137 static void set_general_thread (struct ptid ptid);
138 static void set_continue_thread (struct ptid ptid);
140 static void get_offsets (void);
142 static void skip_frame (void);
144 static long read_frame (char **buf_p, long *sizeof_buf);
146 static int hexnumlen (ULONGEST num);
148 static void init_remote_ops (void);
150 static void init_extended_remote_ops (void);
152 static void remote_stop (struct target_ops *self, ptid_t);
154 static int stubhex (int ch);
156 static int hexnumstr (char *, ULONGEST);
158 static int hexnumnstr (char *, ULONGEST, int);
160 static CORE_ADDR remote_address_masked (CORE_ADDR);
162 static void print_packet (const char *);
164 static void compare_sections_command (char *, int);
166 static void packet_command (char *, int);
168 static int stub_unpack_int (char *buff, int fieldlength);
170 static ptid_t remote_current_thread (ptid_t oldptid);
172 static void remote_find_new_threads (void);
174 static int putpkt_binary (const char *buf, int cnt);
176 static void check_binary_download (CORE_ADDR addr);
178 struct packet_config;
180 static void show_packet_config_cmd (struct packet_config *config);
182 static void show_remote_protocol_packet_cmd (struct ui_file *file,
184 struct cmd_list_element *c,
187 static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid);
188 static ptid_t read_ptid (char *buf, char **obuf);
190 static void remote_set_permissions (struct target_ops *self);
193 static int remote_get_trace_status (struct target_ops *self,
194 struct trace_status *ts);
196 static int remote_upload_tracepoints (struct target_ops *self,
197 struct uploaded_tp **utpp);
199 static int remote_upload_trace_state_variables (struct target_ops *self,
200 struct uploaded_tsv **utsvp);
202 static void remote_query_supported (void);
204 static void remote_check_symbols (void);
206 void _initialize_remote (void);
209 static void stop_reply_xfree (struct stop_reply *);
210 static void remote_parse_stop_reply (char *, struct stop_reply *);
211 static void push_stop_reply (struct stop_reply *);
212 static void discard_pending_stop_replies_in_queue (struct remote_state *);
213 static int peek_stop_reply (ptid_t ptid);
215 static void remote_async_inferior_event_handler (gdb_client_data);
217 static void remote_terminal_ours (struct target_ops *self);
219 static int remote_read_description_p (struct target_ops *target);
221 static void remote_console_output (char *msg);
223 static int remote_supports_cond_breakpoints (struct target_ops *self);
225 static int remote_can_run_breakpoint_commands (struct target_ops *self);
229 static struct cmd_list_element *remote_cmdlist;
231 /* For "set remote" and "show remote". */
233 static struct cmd_list_element *remote_set_cmdlist;
234 static struct cmd_list_element *remote_show_cmdlist;
236 /* Stub vCont actions support.
238 Each field is a boolean flag indicating whether the stub reports
239 support for the corresponding action. */
241 struct vCont_action_support
250 /* Controls whether GDB is willing to use range stepping. */
252 static int use_range_stepping = 1;
254 #define OPAQUETHREADBYTES 8
256 /* a 64 bit opaque identifier */
257 typedef unsigned char threadref[OPAQUETHREADBYTES];
259 /* About this many threadisds fit in a packet. */
261 #define MAXTHREADLISTRESULTS 32
263 /* Description of the remote protocol state for the currently
264 connected target. This is per-target state, and independent of the
265 selected architecture. */
269 /* A buffer to use for incoming packets, and its current size. The
270 buffer is grown dynamically for larger incoming packets.
271 Outgoing packets may also be constructed in this buffer.
272 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
273 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
278 /* True if we're going through initial connection setup (finding out
279 about the remote side's threads, relocating symbols, etc.). */
282 /* If we negotiated packet size explicitly (and thus can bypass
283 heuristics for the largest packet size that will not overflow
284 a buffer in the stub), this will be set to that packet size.
285 Otherwise zero, meaning to use the guessed size. */
286 long explicit_packet_size;
288 /* remote_wait is normally called when the target is running and
289 waits for a stop reply packet. But sometimes we need to call it
290 when the target is already stopped. We can send a "?" packet
291 and have remote_wait read the response. Or, if we already have
292 the response, we can stash it in BUF and tell remote_wait to
293 skip calling getpkt. This flag is set when BUF contains a
294 stop reply packet and the target is not waiting. */
295 int cached_wait_status;
297 /* True, if in no ack mode. That is, neither GDB nor the stub will
298 expect acks from each other. The connection is assumed to be
302 /* True if we're connected in extended remote mode. */
305 /* True if we resumed the target and we're waiting for the target to
306 stop. In the mean time, we can't start another command/query.
307 The remote server wouldn't be ready to process it, so we'd
308 timeout waiting for a reply that would never come and eventually
309 we'd close the connection. This can happen in asynchronous mode
310 because we allow GDB commands while the target is running. */
311 int waiting_for_stop_reply;
313 /* The status of the stub support for the various vCont actions. */
314 struct vCont_action_support supports_vCont;
316 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
317 responded to that. */
320 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
321 remote_open knows that we don't have a file open when the program
323 struct serial *remote_desc;
325 /* These are the threads which we last sent to the remote system. The
326 TID member will be -1 for all or -2 for not sent yet. */
327 ptid_t general_thread;
328 ptid_t continue_thread;
330 /* This is the traceframe which we last selected on the remote system.
331 It will be -1 if no traceframe is selected. */
332 int remote_traceframe_number;
334 char *last_pass_packet;
336 /* The last QProgramSignals packet sent to the target. We bypass
337 sending a new program signals list down to the target if the new
338 packet is exactly the same as the last we sent. IOW, we only let
339 the target know about program signals list changes. */
340 char *last_program_signals_packet;
342 enum gdb_signal last_sent_signal;
346 char *finished_object;
347 char *finished_annex;
348 ULONGEST finished_offset;
350 /* Should we try the 'ThreadInfo' query packet?
352 This variable (NOT available to the user: auto-detect only!)
353 determines whether GDB will use the new, simpler "ThreadInfo"
354 query or the older, more complex syntax for thread queries.
355 This is an auto-detect variable (set to true at each connect,
356 and set to false when the target fails to recognize it). */
357 int use_threadinfo_query;
358 int use_threadextra_query;
360 void (*async_client_callback) (enum inferior_event_type event_type,
362 void *async_client_context;
364 /* This is set to the data address of the access causing the target
365 to stop for a watchpoint. */
366 CORE_ADDR remote_watch_data_address;
368 /* This is non-zero if target stopped for a watchpoint. */
369 int remote_stopped_by_watchpoint_p;
371 threadref echo_nextthread;
372 threadref nextthread;
373 threadref resultthreadlist[MAXTHREADLISTRESULTS];
375 /* The state of remote notification. */
376 struct remote_notif_state *notif_state;
379 /* Private data that we'll store in (struct thread_info)->private. */
380 struct private_thread_info
387 free_private_thread_info (struct private_thread_info *info)
393 /* This data could be associated with a target, but we do not always
394 have access to the current target when we need it, so for now it is
395 static. This will be fine for as long as only one target is in use
397 static struct remote_state *remote_state;
399 static struct remote_state *
400 get_remote_state_raw (void)
405 /* Allocate a new struct remote_state with xmalloc, initialize it, and
408 static struct remote_state *
409 new_remote_state (void)
411 struct remote_state *result = XCNEW (struct remote_state);
413 /* The default buffer size is unimportant; it will be expanded
414 whenever a larger buffer is needed. */
415 result->buf_size = 400;
416 result->buf = xmalloc (result->buf_size);
417 result->remote_traceframe_number = -1;
418 result->last_sent_signal = GDB_SIGNAL_0;
423 /* Description of the remote protocol for a given architecture. */
427 long offset; /* Offset into G packet. */
428 long regnum; /* GDB's internal register number. */
429 LONGEST pnum; /* Remote protocol register number. */
430 int in_g_packet; /* Always part of G packet. */
431 /* long size in bytes; == register_size (target_gdbarch (), regnum);
433 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
437 struct remote_arch_state
439 /* Description of the remote protocol registers. */
440 long sizeof_g_packet;
442 /* Description of the remote protocol registers indexed by REGNUM
443 (making an array gdbarch_num_regs in size). */
444 struct packet_reg *regs;
446 /* This is the size (in chars) of the first response to the ``g''
447 packet. It is used as a heuristic when determining the maximum
448 size of memory-read and memory-write packets. A target will
449 typically only reserve a buffer large enough to hold the ``g''
450 packet. The size does not include packet overhead (headers and
452 long actual_register_packet_size;
454 /* This is the maximum size (in chars) of a non read/write packet.
455 It is also used as a cap on the size of read/write packets. */
456 long remote_packet_size;
459 /* Utility: generate error from an incoming stub packet. */
461 trace_error (char *buf)
464 return; /* not an error msg */
467 case '1': /* malformed packet error */
468 if (*++buf == '0') /* general case: */
469 error (_("remote.c: error in outgoing packet."));
471 error (_("remote.c: error in outgoing packet at field #%ld."),
472 strtol (buf, NULL, 16));
474 error (_("Target returns error code '%s'."), buf);
478 /* Utility: wait for reply from stub, while accepting "O" packets. */
480 remote_get_noisy_reply (char **buf_p,
483 do /* Loop on reply from remote stub. */
487 QUIT; /* Allow user to bail out with ^C. */
488 getpkt (buf_p, sizeof_buf, 0);
492 else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
495 CORE_ADDR from, to, org_to;
497 int adjusted_size = 0;
498 volatile struct gdb_exception ex;
500 p = buf + strlen ("qRelocInsn:");
501 pp = unpack_varlen_hex (p, &ul);
503 error (_("invalid qRelocInsn packet: %s"), buf);
507 unpack_varlen_hex (p, &ul);
512 TRY_CATCH (ex, RETURN_MASK_ALL)
514 gdbarch_relocate_instruction (target_gdbarch (), &to, from);
518 adjusted_size = to - org_to;
520 xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size);
523 else if (ex.reason < 0 && ex.error == MEMORY_ERROR)
525 /* Propagate memory errors silently back to the target.
526 The stub may have limited the range of addresses we
527 can write to, for example. */
532 /* Something unexpectedly bad happened. Be verbose so
533 we can tell what, and propagate the error back to the
534 stub, so it doesn't get stuck waiting for a
536 exception_fprintf (gdb_stderr, ex,
537 _("warning: relocating instruction: "));
541 else if (buf[0] == 'O' && buf[1] != 'K')
542 remote_console_output (buf + 1); /* 'O' message from stub */
544 return buf; /* Here's the actual reply. */
549 /* Handle for retreving the remote protocol data from gdbarch. */
550 static struct gdbarch_data *remote_gdbarch_data_handle;
552 static struct remote_arch_state *
553 get_remote_arch_state (void)
555 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle);
558 /* Fetch the global remote target state. */
560 static struct remote_state *
561 get_remote_state (void)
563 /* Make sure that the remote architecture state has been
564 initialized, because doing so might reallocate rs->buf. Any
565 function which calls getpkt also needs to be mindful of changes
566 to rs->buf, but this call limits the number of places which run
568 get_remote_arch_state ();
570 return get_remote_state_raw ();
574 compare_pnums (const void *lhs_, const void *rhs_)
576 const struct packet_reg * const *lhs = lhs_;
577 const struct packet_reg * const *rhs = rhs_;
579 if ((*lhs)->pnum < (*rhs)->pnum)
581 else if ((*lhs)->pnum == (*rhs)->pnum)
588 map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs)
590 int regnum, num_remote_regs, offset;
591 struct packet_reg **remote_regs;
593 for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++)
595 struct packet_reg *r = ®s[regnum];
597 if (register_size (gdbarch, regnum) == 0)
598 /* Do not try to fetch zero-sized (placeholder) registers. */
601 r->pnum = gdbarch_remote_register_number (gdbarch, regnum);
606 /* Define the g/G packet format as the contents of each register
607 with a remote protocol number, in order of ascending protocol
610 remote_regs = alloca (gdbarch_num_regs (gdbarch)
611 * sizeof (struct packet_reg *));
612 for (num_remote_regs = 0, regnum = 0;
613 regnum < gdbarch_num_regs (gdbarch);
615 if (regs[regnum].pnum != -1)
616 remote_regs[num_remote_regs++] = ®s[regnum];
618 qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *),
621 for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++)
623 remote_regs[regnum]->in_g_packet = 1;
624 remote_regs[regnum]->offset = offset;
625 offset += register_size (gdbarch, remote_regs[regnum]->regnum);
631 /* Given the architecture described by GDBARCH, return the remote
632 protocol register's number and the register's offset in the g/G
633 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
634 If the target does not have a mapping for REGNUM, return false,
635 otherwise, return true. */
638 remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum,
639 int *pnum, int *poffset)
642 struct packet_reg *regs;
643 struct cleanup *old_chain;
645 gdb_assert (regnum < gdbarch_num_regs (gdbarch));
647 regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg));
648 old_chain = make_cleanup (xfree, regs);
650 sizeof_g_packet = map_regcache_remote_table (gdbarch, regs);
652 *pnum = regs[regnum].pnum;
653 *poffset = regs[regnum].offset;
655 do_cleanups (old_chain);
661 init_remote_state (struct gdbarch *gdbarch)
663 struct remote_state *rs = get_remote_state_raw ();
664 struct remote_arch_state *rsa;
666 rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state);
668 /* Use the architecture to build a regnum<->pnum table, which will be
669 1:1 unless a feature set specifies otherwise. */
670 rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch,
671 gdbarch_num_regs (gdbarch),
674 /* Record the maximum possible size of the g packet - it may turn out
676 rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs);
678 /* Default maximum number of characters in a packet body. Many
679 remote stubs have a hardwired buffer size of 400 bytes
680 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
681 as the maximum packet-size to ensure that the packet and an extra
682 NUL character can always fit in the buffer. This stops GDB
683 trashing stubs that try to squeeze an extra NUL into what is
684 already a full buffer (As of 1999-12-04 that was most stubs). */
685 rsa->remote_packet_size = 400 - 1;
687 /* This one is filled in when a ``g'' packet is received. */
688 rsa->actual_register_packet_size = 0;
690 /* Should rsa->sizeof_g_packet needs more space than the
691 default, adjust the size accordingly. Remember that each byte is
692 encoded as two characters. 32 is the overhead for the packet
693 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
694 (``$NN:G...#NN'') is a better guess, the below has been padded a
696 if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2))
697 rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32);
699 /* Make sure that the packet buffer is plenty big enough for
700 this architecture. */
701 if (rs->buf_size < rsa->remote_packet_size)
703 rs->buf_size = 2 * rsa->remote_packet_size;
704 rs->buf = xrealloc (rs->buf, rs->buf_size);
710 /* Return the current allowed size of a remote packet. This is
711 inferred from the current architecture, and should be used to
712 limit the length of outgoing packets. */
714 get_remote_packet_size (void)
716 struct remote_state *rs = get_remote_state ();
717 struct remote_arch_state *rsa = get_remote_arch_state ();
719 if (rs->explicit_packet_size)
720 return rs->explicit_packet_size;
722 return rsa->remote_packet_size;
725 static struct packet_reg *
726 packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum)
728 if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ()))
732 struct packet_reg *r = &rsa->regs[regnum];
734 gdb_assert (r->regnum == regnum);
739 static struct packet_reg *
740 packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum)
744 for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++)
746 struct packet_reg *r = &rsa->regs[i];
754 static struct target_ops remote_ops;
756 static struct target_ops extended_remote_ops;
758 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
759 ``forever'' still use the normal timeout mechanism. This is
760 currently used by the ASYNC code to guarentee that target reads
761 during the initial connect always time-out. Once getpkt has been
762 modified to return a timeout indication and, in turn
763 remote_wait()/wait_for_inferior() have gained a timeout parameter
765 static int wait_forever_enabled_p = 1;
767 /* Allow the user to specify what sequence to send to the remote
768 when he requests a program interruption: Although ^C is usually
769 what remote systems expect (this is the default, here), it is
770 sometimes preferable to send a break. On other systems such
771 as the Linux kernel, a break followed by g, which is Magic SysRq g
772 is required in order to interrupt the execution. */
773 const char interrupt_sequence_control_c[] = "Ctrl-C";
774 const char interrupt_sequence_break[] = "BREAK";
775 const char interrupt_sequence_break_g[] = "BREAK-g";
776 static const char *const interrupt_sequence_modes[] =
778 interrupt_sequence_control_c,
779 interrupt_sequence_break,
780 interrupt_sequence_break_g,
783 static const char *interrupt_sequence_mode = interrupt_sequence_control_c;
786 show_interrupt_sequence (struct ui_file *file, int from_tty,
787 struct cmd_list_element *c,
790 if (interrupt_sequence_mode == interrupt_sequence_control_c)
791 fprintf_filtered (file,
792 _("Send the ASCII ETX character (Ctrl-c) "
793 "to the remote target to interrupt the "
794 "execution of the program.\n"));
795 else if (interrupt_sequence_mode == interrupt_sequence_break)
796 fprintf_filtered (file,
797 _("send a break signal to the remote target "
798 "to interrupt the execution of the program.\n"));
799 else if (interrupt_sequence_mode == interrupt_sequence_break_g)
800 fprintf_filtered (file,
801 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
802 "the remote target to interrupt the execution "
803 "of Linux kernel.\n"));
805 internal_error (__FILE__, __LINE__,
806 _("Invalid value for interrupt_sequence_mode: %s."),
807 interrupt_sequence_mode);
810 /* This boolean variable specifies whether interrupt_sequence is sent
811 to the remote target when gdb connects to it.
812 This is mostly needed when you debug the Linux kernel: The Linux kernel
813 expects BREAK g which is Magic SysRq g for connecting gdb. */
814 static int interrupt_on_connect = 0;
816 /* This variable is used to implement the "set/show remotebreak" commands.
817 Since these commands are now deprecated in favor of "set/show remote
818 interrupt-sequence", it no longer has any effect on the code. */
819 static int remote_break;
822 set_remotebreak (char *args, int from_tty, struct cmd_list_element *c)
825 interrupt_sequence_mode = interrupt_sequence_break;
827 interrupt_sequence_mode = interrupt_sequence_control_c;
831 show_remotebreak (struct ui_file *file, int from_tty,
832 struct cmd_list_element *c,
837 /* This variable sets the number of bits in an address that are to be
838 sent in a memory ("M" or "m") packet. Normally, after stripping
839 leading zeros, the entire address would be sent. This variable
840 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
841 initial implementation of remote.c restricted the address sent in
842 memory packets to ``host::sizeof long'' bytes - (typically 32
843 bits). Consequently, for 64 bit targets, the upper 32 bits of an
844 address was never sent. Since fixing this bug may cause a break in
845 some remote targets this variable is principly provided to
846 facilitate backward compatibility. */
848 static unsigned int remote_address_size;
850 /* Temporary to track who currently owns the terminal. See
851 remote_terminal_* for more details. */
853 static int remote_async_terminal_ours_p;
855 /* The executable file to use for "run" on the remote side. */
857 static char *remote_exec_file = "";
860 /* User configurable variables for the number of characters in a
861 memory read/write packet. MIN (rsa->remote_packet_size,
862 rsa->sizeof_g_packet) is the default. Some targets need smaller
863 values (fifo overruns, et.al.) and some users need larger values
864 (speed up transfers). The variables ``preferred_*'' (the user
865 request), ``current_*'' (what was actually set) and ``forced_*''
866 (Positive - a soft limit, negative - a hard limit). */
868 struct memory_packet_config
875 /* Compute the current size of a read/write packet. Since this makes
876 use of ``actual_register_packet_size'' the computation is dynamic. */
879 get_memory_packet_size (struct memory_packet_config *config)
881 struct remote_state *rs = get_remote_state ();
882 struct remote_arch_state *rsa = get_remote_arch_state ();
884 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
885 law?) that some hosts don't cope very well with large alloca()
886 calls. Eventually the alloca() code will be replaced by calls to
887 xmalloc() and make_cleanups() allowing this restriction to either
888 be lifted or removed. */
889 #ifndef MAX_REMOTE_PACKET_SIZE
890 #define MAX_REMOTE_PACKET_SIZE 16384
892 /* NOTE: 20 ensures we can write at least one byte. */
893 #ifndef MIN_REMOTE_PACKET_SIZE
894 #define MIN_REMOTE_PACKET_SIZE 20
899 if (config->size <= 0)
900 what_they_get = MAX_REMOTE_PACKET_SIZE;
902 what_they_get = config->size;
906 what_they_get = get_remote_packet_size ();
907 /* Limit the packet to the size specified by the user. */
909 && what_they_get > config->size)
910 what_they_get = config->size;
912 /* Limit it to the size of the targets ``g'' response unless we have
913 permission from the stub to use a larger packet size. */
914 if (rs->explicit_packet_size == 0
915 && rsa->actual_register_packet_size > 0
916 && what_they_get > rsa->actual_register_packet_size)
917 what_they_get = rsa->actual_register_packet_size;
919 if (what_they_get > MAX_REMOTE_PACKET_SIZE)
920 what_they_get = MAX_REMOTE_PACKET_SIZE;
921 if (what_they_get < MIN_REMOTE_PACKET_SIZE)
922 what_they_get = MIN_REMOTE_PACKET_SIZE;
924 /* Make sure there is room in the global buffer for this packet
925 (including its trailing NUL byte). */
926 if (rs->buf_size < what_they_get + 1)
928 rs->buf_size = 2 * what_they_get;
929 rs->buf = xrealloc (rs->buf, 2 * what_they_get);
932 return what_they_get;
935 /* Update the size of a read/write packet. If they user wants
936 something really big then do a sanity check. */
939 set_memory_packet_size (char *args, struct memory_packet_config *config)
941 int fixed_p = config->fixed_p;
942 long size = config->size;
945 error (_("Argument required (integer, `fixed' or `limited')."));
946 else if (strcmp (args, "hard") == 0
947 || strcmp (args, "fixed") == 0)
949 else if (strcmp (args, "soft") == 0
950 || strcmp (args, "limit") == 0)
956 size = strtoul (args, &end, 0);
958 error (_("Invalid %s (bad syntax)."), config->name);
960 /* Instead of explicitly capping the size of a packet to
961 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
962 instead allowed to set the size to something arbitrarily
964 if (size > MAX_REMOTE_PACKET_SIZE)
965 error (_("Invalid %s (too large)."), config->name);
969 if (fixed_p && !config->fixed_p)
971 if (! query (_("The target may not be able to correctly handle a %s\n"
972 "of %ld bytes. Change the packet size? "),
974 error (_("Packet size not changed."));
976 /* Update the config. */
977 config->fixed_p = fixed_p;
982 show_memory_packet_size (struct memory_packet_config *config)
984 printf_filtered (_("The %s is %ld. "), config->name, config->size);
986 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
987 get_memory_packet_size (config));
989 printf_filtered (_("Packets are limited to %ld bytes.\n"),
990 get_memory_packet_size (config));
993 static struct memory_packet_config memory_write_packet_config =
995 "memory-write-packet-size",
999 set_memory_write_packet_size (char *args, int from_tty)
1001 set_memory_packet_size (args, &memory_write_packet_config);
1005 show_memory_write_packet_size (char *args, int from_tty)
1007 show_memory_packet_size (&memory_write_packet_config);
1011 get_memory_write_packet_size (void)
1013 return get_memory_packet_size (&memory_write_packet_config);
1016 static struct memory_packet_config memory_read_packet_config =
1018 "memory-read-packet-size",
1022 set_memory_read_packet_size (char *args, int from_tty)
1024 set_memory_packet_size (args, &memory_read_packet_config);
1028 show_memory_read_packet_size (char *args, int from_tty)
1030 show_memory_packet_size (&memory_read_packet_config);
1034 get_memory_read_packet_size (void)
1036 long size = get_memory_packet_size (&memory_read_packet_config);
1038 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1039 extra buffer size argument before the memory read size can be
1040 increased beyond this. */
1041 if (size > get_remote_packet_size ())
1042 size = get_remote_packet_size ();
1047 /* Generic configuration support for packets the stub optionally
1048 supports. Allows the user to specify the use of the packet as well
1049 as allowing GDB to auto-detect support in the remote stub. */
1053 PACKET_SUPPORT_UNKNOWN = 0,
1058 struct packet_config
1063 /* If auto, GDB auto-detects support for this packet or feature,
1064 either through qSupported, or by trying the packet and looking
1065 at the response. If true, GDB assumes the target supports this
1066 packet. If false, the packet is disabled. Configs that don't
1067 have an associated command always have this set to auto. */
1068 enum auto_boolean detect;
1070 /* Does the target support this packet? */
1071 enum packet_support support;
1074 /* Analyze a packet's return value and update the packet config
1084 static enum packet_support packet_config_support (struct packet_config *config);
1085 static enum packet_support packet_support (int packet);
1088 show_packet_config_cmd (struct packet_config *config)
1090 char *support = "internal-error";
1092 switch (packet_config_support (config))
1095 support = "enabled";
1097 case PACKET_DISABLE:
1098 support = "disabled";
1100 case PACKET_SUPPORT_UNKNOWN:
1101 support = "unknown";
1104 switch (config->detect)
1106 case AUTO_BOOLEAN_AUTO:
1107 printf_filtered (_("Support for the `%s' packet "
1108 "is auto-detected, currently %s.\n"),
1109 config->name, support);
1111 case AUTO_BOOLEAN_TRUE:
1112 case AUTO_BOOLEAN_FALSE:
1113 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1114 config->name, support);
1120 add_packet_config_cmd (struct packet_config *config, const char *name,
1121 const char *title, int legacy)
1127 config->name = name;
1128 config->title = title;
1129 set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1131 show_doc = xstrprintf ("Show current use of remote "
1132 "protocol `%s' (%s) packet",
1134 /* set/show TITLE-packet {auto,on,off} */
1135 cmd_name = xstrprintf ("%s-packet", title);
1136 add_setshow_auto_boolean_cmd (cmd_name, class_obscure,
1137 &config->detect, set_doc,
1138 show_doc, NULL, /* help_doc */
1140 show_remote_protocol_packet_cmd,
1141 &remote_set_cmdlist, &remote_show_cmdlist);
1142 /* The command code copies the documentation strings. */
1145 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1150 legacy_name = xstrprintf ("%s-packet", name);
1151 add_alias_cmd (legacy_name, cmd_name, class_obscure, 0,
1152 &remote_set_cmdlist);
1153 add_alias_cmd (legacy_name, cmd_name, class_obscure, 0,
1154 &remote_show_cmdlist);
1158 static enum packet_result
1159 packet_check_result (const char *buf)
1163 /* The stub recognized the packet request. Check that the
1164 operation succeeded. */
1166 && isxdigit (buf[1]) && isxdigit (buf[2])
1168 /* "Enn" - definitly an error. */
1169 return PACKET_ERROR;
1171 /* Always treat "E." as an error. This will be used for
1172 more verbose error messages, such as E.memtypes. */
1173 if (buf[0] == 'E' && buf[1] == '.')
1174 return PACKET_ERROR;
1176 /* The packet may or may not be OK. Just assume it is. */
1180 /* The stub does not support the packet. */
1181 return PACKET_UNKNOWN;
1184 static enum packet_result
1185 packet_ok (const char *buf, struct packet_config *config)
1187 enum packet_result result;
1189 if (config->detect != AUTO_BOOLEAN_TRUE
1190 && config->support == PACKET_DISABLE)
1191 internal_error (__FILE__, __LINE__,
1192 _("packet_ok: attempt to use a disabled packet"));
1194 result = packet_check_result (buf);
1199 /* The stub recognized the packet request. */
1200 if (config->support == PACKET_SUPPORT_UNKNOWN)
1203 fprintf_unfiltered (gdb_stdlog,
1204 "Packet %s (%s) is supported\n",
1205 config->name, config->title);
1206 config->support = PACKET_ENABLE;
1209 case PACKET_UNKNOWN:
1210 /* The stub does not support the packet. */
1211 if (config->detect == AUTO_BOOLEAN_AUTO
1212 && config->support == PACKET_ENABLE)
1214 /* If the stub previously indicated that the packet was
1215 supported then there is a protocol error. */
1216 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1217 config->name, config->title);
1219 else if (config->detect == AUTO_BOOLEAN_TRUE)
1221 /* The user set it wrong. */
1222 error (_("Enabled packet %s (%s) not recognized by stub"),
1223 config->name, config->title);
1227 fprintf_unfiltered (gdb_stdlog,
1228 "Packet %s (%s) is NOT supported\n",
1229 config->name, config->title);
1230 config->support = PACKET_DISABLE;
1250 PACKET_vFile_pwrite,
1252 PACKET_vFile_unlink,
1253 PACKET_vFile_readlink,
1255 PACKET_qXfer_features,
1256 PACKET_qXfer_libraries,
1257 PACKET_qXfer_libraries_svr4,
1258 PACKET_qXfer_memory_map,
1259 PACKET_qXfer_spu_read,
1260 PACKET_qXfer_spu_write,
1261 PACKET_qXfer_osdata,
1262 PACKET_qXfer_threads,
1263 PACKET_qXfer_statictrace_read,
1264 PACKET_qXfer_traceframe_info,
1270 PACKET_QPassSignals,
1271 PACKET_QProgramSignals,
1273 PACKET_qSearch_memory,
1276 PACKET_QStartNoAckMode,
1278 PACKET_qXfer_siginfo_read,
1279 PACKET_qXfer_siginfo_write,
1282 /* Support for conditional tracepoints. */
1283 PACKET_ConditionalTracepoints,
1285 /* Support for target-side breakpoint conditions. */
1286 PACKET_ConditionalBreakpoints,
1288 /* Support for target-side breakpoint commands. */
1289 PACKET_BreakpointCommands,
1291 /* Support for fast tracepoints. */
1292 PACKET_FastTracepoints,
1294 /* Support for static tracepoints. */
1295 PACKET_StaticTracepoints,
1297 /* Support for installing tracepoints while a trace experiment is
1299 PACKET_InstallInTrace,
1303 PACKET_TracepointSource,
1306 PACKET_QDisableRandomization,
1308 PACKET_QTBuffer_size,
1311 PACKET_qXfer_btrace,
1313 /* Support for the QNonStop packet. */
1316 /* Support for multi-process extensions. */
1317 PACKET_multiprocess_feature,
1319 /* Support for enabling and disabling tracepoints while a trace
1320 experiment is running. */
1321 PACKET_EnableDisableTracepoints_feature,
1323 /* Support for collecting strings using the tracenz bytecode. */
1324 PACKET_tracenz_feature,
1326 /* Support for continuing to run a trace experiment while GDB is
1328 PACKET_DisconnectedTracing_feature,
1330 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1331 PACKET_augmented_libraries_svr4_read_feature,
1336 static struct packet_config remote_protocol_packets[PACKET_MAX];
1338 /* Returns whether a given packet or feature is supported. This takes
1339 into account the state of the corresponding "set remote foo-packet"
1340 command, which may be used to bypass auto-detection. */
1342 static enum packet_support
1343 packet_config_support (struct packet_config *config)
1345 switch (config->detect)
1347 case AUTO_BOOLEAN_TRUE:
1348 return PACKET_ENABLE;
1349 case AUTO_BOOLEAN_FALSE:
1350 return PACKET_DISABLE;
1351 case AUTO_BOOLEAN_AUTO:
1352 return config->support;
1354 gdb_assert_not_reached (_("bad switch"));
1358 /* Same as packet_config_support, but takes the packet's enum value as
1361 static enum packet_support
1362 packet_support (int packet)
1364 struct packet_config *config = &remote_protocol_packets[packet];
1366 return packet_config_support (config);
1370 show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty,
1371 struct cmd_list_element *c,
1374 struct packet_config *packet;
1376 for (packet = remote_protocol_packets;
1377 packet < &remote_protocol_packets[PACKET_MAX];
1380 if (&packet->detect == c->var)
1382 show_packet_config_cmd (packet);
1386 internal_error (__FILE__, __LINE__, _("Could not find config for %s"),
1390 /* Should we try one of the 'Z' requests? */
1394 Z_PACKET_SOFTWARE_BP,
1395 Z_PACKET_HARDWARE_BP,
1402 /* For compatibility with older distributions. Provide a ``set remote
1403 Z-packet ...'' command that updates all the Z packet types. */
1405 static enum auto_boolean remote_Z_packet_detect;
1408 set_remote_protocol_Z_packet_cmd (char *args, int from_tty,
1409 struct cmd_list_element *c)
1413 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
1414 remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect;
1418 show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty,
1419 struct cmd_list_element *c,
1424 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
1426 show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]);
1430 /* Returns true if the multi-process extensions are in effect. */
1433 remote_multi_process_p (struct remote_state *rs)
1435 return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE;
1438 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1439 static struct async_signal_handler *async_sigint_remote_twice_token;
1440 static struct async_signal_handler *async_sigint_remote_token;
1443 /* Asynchronous signal handle registered as event loop source for
1444 when we have pending events ready to be passed to the core. */
1446 static struct async_event_handler *remote_async_inferior_event_token;
1450 static ptid_t magic_null_ptid;
1451 static ptid_t not_sent_ptid;
1452 static ptid_t any_thread_ptid;
1454 /* Find out if the stub attached to PID (and hence GDB should offer to
1455 detach instead of killing it when bailing out). */
1458 remote_query_attached (int pid)
1460 struct remote_state *rs = get_remote_state ();
1461 size_t size = get_remote_packet_size ();
1463 if (packet_support (PACKET_qAttached) == PACKET_DISABLE)
1466 if (remote_multi_process_p (rs))
1467 xsnprintf (rs->buf, size, "qAttached:%x", pid);
1469 xsnprintf (rs->buf, size, "qAttached");
1472 getpkt (&rs->buf, &rs->buf_size, 0);
1474 switch (packet_ok (rs->buf,
1475 &remote_protocol_packets[PACKET_qAttached]))
1478 if (strcmp (rs->buf, "1") == 0)
1482 warning (_("Remote failure reply: %s"), rs->buf);
1484 case PACKET_UNKNOWN:
1491 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1492 has been invented by GDB, instead of reported by the target. Since
1493 we can be connected to a remote system before before knowing about
1494 any inferior, mark the target with execution when we find the first
1495 inferior. If ATTACHED is 1, then we had just attached to this
1496 inferior. If it is 0, then we just created this inferior. If it
1497 is -1, then try querying the remote stub to find out if it had
1498 attached to the inferior or not. */
1500 static struct inferior *
1501 remote_add_inferior (int fake_pid_p, int pid, int attached)
1503 struct inferior *inf;
1505 /* Check whether this process we're learning about is to be
1506 considered attached, or if is to be considered to have been
1507 spawned by the stub. */
1509 attached = remote_query_attached (pid);
1511 if (gdbarch_has_global_solist (target_gdbarch ()))
1513 /* If the target shares code across all inferiors, then every
1514 attach adds a new inferior. */
1515 inf = add_inferior (pid);
1517 /* ... and every inferior is bound to the same program space.
1518 However, each inferior may still have its own address
1520 inf->aspace = maybe_new_address_space ();
1521 inf->pspace = current_program_space;
1525 /* In the traditional debugging scenario, there's a 1-1 match
1526 between program/address spaces. We simply bind the inferior
1527 to the program space's address space. */
1528 inf = current_inferior ();
1529 inferior_appeared (inf, pid);
1532 inf->attach_flag = attached;
1533 inf->fake_pid_p = fake_pid_p;
1538 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1539 according to RUNNING. */
1542 remote_add_thread (ptid_t ptid, int running)
1544 struct remote_state *rs = get_remote_state ();
1546 /* GDB historically didn't pull threads in the initial connection
1547 setup. If the remote target doesn't even have a concept of
1548 threads (e.g., a bare-metal target), even if internally we
1549 consider that a single-threaded target, mentioning a new thread
1550 might be confusing to the user. Be silent then, preserving the
1551 age old behavior. */
1552 if (rs->starting_up)
1553 add_thread_silent (ptid);
1557 set_executing (ptid, running);
1558 set_running (ptid, running);
1561 /* Come here when we learn about a thread id from the remote target.
1562 It may be the first time we hear about such thread, so take the
1563 opportunity to add it to GDB's thread list. In case this is the
1564 first time we're noticing its corresponding inferior, add it to
1565 GDB's inferior list as well. */
1568 remote_notice_new_inferior (ptid_t currthread, int running)
1570 /* If this is a new thread, add it to GDB's thread list.
1571 If we leave it up to WFI to do this, bad things will happen. */
1573 if (in_thread_list (currthread) && is_exited (currthread))
1575 /* We're seeing an event on a thread id we knew had exited.
1576 This has to be a new thread reusing the old id. Add it. */
1577 remote_add_thread (currthread, running);
1581 if (!in_thread_list (currthread))
1583 struct inferior *inf = NULL;
1584 int pid = ptid_get_pid (currthread);
1586 if (ptid_is_pid (inferior_ptid)
1587 && pid == ptid_get_pid (inferior_ptid))
1589 /* inferior_ptid has no thread member yet. This can happen
1590 with the vAttach -> remote_wait,"TAAthread:" path if the
1591 stub doesn't support qC. This is the first stop reported
1592 after an attach, so this is the main thread. Update the
1593 ptid in the thread list. */
1594 if (in_thread_list (pid_to_ptid (pid)))
1595 thread_change_ptid (inferior_ptid, currthread);
1598 remote_add_thread (currthread, running);
1599 inferior_ptid = currthread;
1604 if (ptid_equal (magic_null_ptid, inferior_ptid))
1606 /* inferior_ptid is not set yet. This can happen with the
1607 vRun -> remote_wait,"TAAthread:" path if the stub
1608 doesn't support qC. This is the first stop reported
1609 after an attach, so this is the main thread. Update the
1610 ptid in the thread list. */
1611 thread_change_ptid (inferior_ptid, currthread);
1615 /* When connecting to a target remote, or to a target
1616 extended-remote which already was debugging an inferior, we
1617 may not know about it yet. Add it before adding its child
1618 thread, so notifications are emitted in a sensible order. */
1619 if (!in_inferior_list (ptid_get_pid (currthread)))
1621 struct remote_state *rs = get_remote_state ();
1622 int fake_pid_p = !remote_multi_process_p (rs);
1624 inf = remote_add_inferior (fake_pid_p,
1625 ptid_get_pid (currthread), -1);
1628 /* This is really a new thread. Add it. */
1629 remote_add_thread (currthread, running);
1631 /* If we found a new inferior, let the common code do whatever
1632 it needs to with it (e.g., read shared libraries, insert
1633 breakpoints), unless we're just setting up an all-stop
1637 struct remote_state *rs = get_remote_state ();
1639 if (non_stop || !rs->starting_up)
1640 notice_new_inferior (currthread, running, 0);
1645 /* Return the private thread data, creating it if necessary. */
1647 static struct private_thread_info *
1648 demand_private_info (ptid_t ptid)
1650 struct thread_info *info = find_thread_ptid (ptid);
1656 info->private = xmalloc (sizeof (*(info->private)));
1657 info->private_dtor = free_private_thread_info;
1658 info->private->core = -1;
1659 info->private->extra = 0;
1662 return info->private;
1665 /* Call this function as a result of
1666 1) A halt indication (T packet) containing a thread id
1667 2) A direct query of currthread
1668 3) Successful execution of set thread */
1671 record_currthread (struct remote_state *rs, ptid_t currthread)
1673 rs->general_thread = currthread;
1676 /* If 'QPassSignals' is supported, tell the remote stub what signals
1677 it can simply pass through to the inferior without reporting. */
1680 remote_pass_signals (struct target_ops *self,
1681 int numsigs, unsigned char *pass_signals)
1683 if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE)
1685 char *pass_packet, *p;
1687 struct remote_state *rs = get_remote_state ();
1689 gdb_assert (numsigs < 256);
1690 for (i = 0; i < numsigs; i++)
1692 if (pass_signals[i])
1695 pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1);
1696 strcpy (pass_packet, "QPassSignals:");
1697 p = pass_packet + strlen (pass_packet);
1698 for (i = 0; i < numsigs; i++)
1700 if (pass_signals[i])
1703 *p++ = tohex (i >> 4);
1704 *p++ = tohex (i & 15);
1713 if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet))
1715 putpkt (pass_packet);
1716 getpkt (&rs->buf, &rs->buf_size, 0);
1717 packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]);
1718 if (rs->last_pass_packet)
1719 xfree (rs->last_pass_packet);
1720 rs->last_pass_packet = pass_packet;
1723 xfree (pass_packet);
1727 /* If 'QProgramSignals' is supported, tell the remote stub what
1728 signals it should pass through to the inferior when detaching. */
1731 remote_program_signals (struct target_ops *self,
1732 int numsigs, unsigned char *signals)
1734 if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE)
1738 struct remote_state *rs = get_remote_state ();
1740 gdb_assert (numsigs < 256);
1741 for (i = 0; i < numsigs; i++)
1746 packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1);
1747 strcpy (packet, "QProgramSignals:");
1748 p = packet + strlen (packet);
1749 for (i = 0; i < numsigs; i++)
1751 if (signal_pass_state (i))
1754 *p++ = tohex (i >> 4);
1755 *p++ = tohex (i & 15);
1764 if (!rs->last_program_signals_packet
1765 || strcmp (rs->last_program_signals_packet, packet) != 0)
1768 getpkt (&rs->buf, &rs->buf_size, 0);
1769 packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]);
1770 xfree (rs->last_program_signals_packet);
1771 rs->last_program_signals_packet = packet;
1778 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1779 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1780 thread. If GEN is set, set the general thread, if not, then set
1781 the step/continue thread. */
1783 set_thread (struct ptid ptid, int gen)
1785 struct remote_state *rs = get_remote_state ();
1786 ptid_t state = gen ? rs->general_thread : rs->continue_thread;
1787 char *buf = rs->buf;
1788 char *endbuf = rs->buf + get_remote_packet_size ();
1790 if (ptid_equal (state, ptid))
1794 *buf++ = gen ? 'g' : 'c';
1795 if (ptid_equal (ptid, magic_null_ptid))
1796 xsnprintf (buf, endbuf - buf, "0");
1797 else if (ptid_equal (ptid, any_thread_ptid))
1798 xsnprintf (buf, endbuf - buf, "0");
1799 else if (ptid_equal (ptid, minus_one_ptid))
1800 xsnprintf (buf, endbuf - buf, "-1");
1802 write_ptid (buf, endbuf, ptid);
1804 getpkt (&rs->buf, &rs->buf_size, 0);
1806 rs->general_thread = ptid;
1808 rs->continue_thread = ptid;
1812 set_general_thread (struct ptid ptid)
1814 set_thread (ptid, 1);
1818 set_continue_thread (struct ptid ptid)
1820 set_thread (ptid, 0);
1823 /* Change the remote current process. Which thread within the process
1824 ends up selected isn't important, as long as it is the same process
1825 as what INFERIOR_PTID points to.
1827 This comes from that fact that there is no explicit notion of
1828 "selected process" in the protocol. The selected process for
1829 general operations is the process the selected general thread
1833 set_general_process (void)
1835 struct remote_state *rs = get_remote_state ();
1837 /* If the remote can't handle multiple processes, don't bother. */
1838 if (!rs->extended || !remote_multi_process_p (rs))
1841 /* We only need to change the remote current thread if it's pointing
1842 at some other process. */
1843 if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid))
1844 set_general_thread (inferior_ptid);
1848 /* Return nonzero if the thread PTID is still alive on the remote
1852 remote_thread_alive (struct target_ops *ops, ptid_t ptid)
1854 struct remote_state *rs = get_remote_state ();
1857 if (ptid_equal (ptid, magic_null_ptid))
1858 /* The main thread is always alive. */
1861 if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0)
1862 /* The main thread is always alive. This can happen after a
1863 vAttach, if the remote side doesn't support
1868 endp = rs->buf + get_remote_packet_size ();
1871 write_ptid (p, endp, ptid);
1874 getpkt (&rs->buf, &rs->buf_size, 0);
1875 return (rs->buf[0] == 'O' && rs->buf[1] == 'K');
1878 /* About these extended threadlist and threadinfo packets. They are
1879 variable length packets but, the fields within them are often fixed
1880 length. They are redundent enough to send over UDP as is the
1881 remote protocol in general. There is a matching unit test module
1884 /* WARNING: This threadref data structure comes from the remote O.S.,
1885 libstub protocol encoding, and remote.c. It is not particularly
1888 /* Right now, the internal structure is int. We want it to be bigger.
1889 Plan to fix this. */
1891 typedef int gdb_threadref; /* Internal GDB thread reference. */
1893 /* gdb_ext_thread_info is an internal GDB data structure which is
1894 equivalent to the reply of the remote threadinfo packet. */
1896 struct gdb_ext_thread_info
1898 threadref threadid; /* External form of thread reference. */
1899 int active; /* Has state interesting to GDB?
1901 char display[256]; /* Brief state display, name,
1902 blocked/suspended. */
1903 char shortname[32]; /* To be used to name threads. */
1904 char more_display[256]; /* Long info, statistics, queue depth,
1908 /* The volume of remote transfers can be limited by submitting
1909 a mask containing bits specifying the desired information.
1910 Use a union of these values as the 'selection' parameter to
1911 get_thread_info. FIXME: Make these TAG names more thread specific. */
1913 #define TAG_THREADID 1
1914 #define TAG_EXISTS 2
1915 #define TAG_DISPLAY 4
1916 #define TAG_THREADNAME 8
1917 #define TAG_MOREDISPLAY 16
1919 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1921 static char *unpack_nibble (char *buf, int *val);
1923 static char *unpack_byte (char *buf, int *value);
1925 static char *pack_int (char *buf, int value);
1927 static char *unpack_int (char *buf, int *value);
1929 static char *unpack_string (char *src, char *dest, int length);
1931 static char *pack_threadid (char *pkt, threadref *id);
1933 static char *unpack_threadid (char *inbuf, threadref *id);
1935 void int_to_threadref (threadref *id, int value);
1937 static int threadref_to_int (threadref *ref);
1939 static void copy_threadref (threadref *dest, threadref *src);
1941 static int threadmatch (threadref *dest, threadref *src);
1943 static char *pack_threadinfo_request (char *pkt, int mode,
1946 static int remote_unpack_thread_info_response (char *pkt,
1947 threadref *expectedref,
1948 struct gdb_ext_thread_info
1952 static int remote_get_threadinfo (threadref *threadid,
1953 int fieldset, /*TAG mask */
1954 struct gdb_ext_thread_info *info);
1956 static char *pack_threadlist_request (char *pkt, int startflag,
1958 threadref *nextthread);
1960 static int parse_threadlist_response (char *pkt,
1962 threadref *original_echo,
1963 threadref *resultlist,
1966 static int remote_get_threadlist (int startflag,
1967 threadref *nextthread,
1971 threadref *threadlist);
1973 typedef int (*rmt_thread_action) (threadref *ref, void *context);
1975 static int remote_threadlist_iterator (rmt_thread_action stepfunction,
1976 void *context, int looplimit);
1978 static int remote_newthread_step (threadref *ref, void *context);
1981 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1982 buffer we're allowed to write to. Returns
1983 BUF+CHARACTERS_WRITTEN. */
1986 write_ptid (char *buf, const char *endbuf, ptid_t ptid)
1989 struct remote_state *rs = get_remote_state ();
1991 if (remote_multi_process_p (rs))
1993 pid = ptid_get_pid (ptid);
1995 buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid);
1997 buf += xsnprintf (buf, endbuf - buf, "p%x.", pid);
1999 tid = ptid_get_lwp (ptid);
2001 buf += xsnprintf (buf, endbuf - buf, "-%x", -tid);
2003 buf += xsnprintf (buf, endbuf - buf, "%x", tid);
2008 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2009 passed the last parsed char. Returns null_ptid on error. */
2012 read_ptid (char *buf, char **obuf)
2016 ULONGEST pid = 0, tid = 0;
2020 /* Multi-process ptid. */
2021 pp = unpack_varlen_hex (p + 1, &pid);
2023 error (_("invalid remote ptid: %s"), p);
2026 pp = unpack_varlen_hex (p + 1, &tid);
2029 return ptid_build (pid, tid, 0);
2032 /* No multi-process. Just a tid. */
2033 pp = unpack_varlen_hex (p, &tid);
2035 /* Since the stub is not sending a process id, then default to
2036 what's in inferior_ptid, unless it's null at this point. If so,
2037 then since there's no way to know the pid of the reported
2038 threads, use the magic number. */
2039 if (ptid_equal (inferior_ptid, null_ptid))
2040 pid = ptid_get_pid (magic_null_ptid);
2042 pid = ptid_get_pid (inferior_ptid);
2046 return ptid_build (pid, tid, 0);
2052 if (ch >= 'a' && ch <= 'f')
2053 return ch - 'a' + 10;
2054 if (ch >= '0' && ch <= '9')
2056 if (ch >= 'A' && ch <= 'F')
2057 return ch - 'A' + 10;
2062 stub_unpack_int (char *buff, int fieldlength)
2069 nibble = stubhex (*buff++);
2073 retval = retval << 4;
2079 unpack_nibble (char *buf, int *val)
2081 *val = fromhex (*buf++);
2086 unpack_byte (char *buf, int *value)
2088 *value = stub_unpack_int (buf, 2);
2093 pack_int (char *buf, int value)
2095 buf = pack_hex_byte (buf, (value >> 24) & 0xff);
2096 buf = pack_hex_byte (buf, (value >> 16) & 0xff);
2097 buf = pack_hex_byte (buf, (value >> 8) & 0x0ff);
2098 buf = pack_hex_byte (buf, (value & 0xff));
2103 unpack_int (char *buf, int *value)
2105 *value = stub_unpack_int (buf, 8);
2109 #if 0 /* Currently unused, uncomment when needed. */
2110 static char *pack_string (char *pkt, char *string);
2113 pack_string (char *pkt, char *string)
2118 len = strlen (string);
2120 len = 200; /* Bigger than most GDB packets, junk??? */
2121 pkt = pack_hex_byte (pkt, len);
2125 if ((ch == '\0') || (ch == '#'))
2126 ch = '*'; /* Protect encapsulation. */
2131 #endif /* 0 (unused) */
2134 unpack_string (char *src, char *dest, int length)
2143 pack_threadid (char *pkt, threadref *id)
2146 unsigned char *altid;
2148 altid = (unsigned char *) id;
2149 limit = pkt + BUF_THREAD_ID_SIZE;
2151 pkt = pack_hex_byte (pkt, *altid++);
2157 unpack_threadid (char *inbuf, threadref *id)
2160 char *limit = inbuf + BUF_THREAD_ID_SIZE;
2163 altref = (char *) id;
2165 while (inbuf < limit)
2167 x = stubhex (*inbuf++);
2168 y = stubhex (*inbuf++);
2169 *altref++ = (x << 4) | y;
2174 /* Externally, threadrefs are 64 bits but internally, they are still
2175 ints. This is due to a mismatch of specifications. We would like
2176 to use 64bit thread references internally. This is an adapter
2180 int_to_threadref (threadref *id, int value)
2182 unsigned char *scan;
2184 scan = (unsigned char *) id;
2190 *scan++ = (value >> 24) & 0xff;
2191 *scan++ = (value >> 16) & 0xff;
2192 *scan++ = (value >> 8) & 0xff;
2193 *scan++ = (value & 0xff);
2197 threadref_to_int (threadref *ref)
2200 unsigned char *scan;
2206 value = (value << 8) | ((*scan++) & 0xff);
2211 copy_threadref (threadref *dest, threadref *src)
2214 unsigned char *csrc, *cdest;
2216 csrc = (unsigned char *) src;
2217 cdest = (unsigned char *) dest;
2224 threadmatch (threadref *dest, threadref *src)
2226 /* Things are broken right now, so just assume we got a match. */
2228 unsigned char *srcp, *destp;
2230 srcp = (char *) src;
2231 destp = (char *) dest;
2235 result &= (*srcp++ == *destp++) ? 1 : 0;
2242 threadid:1, # always request threadid
2249 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2252 pack_threadinfo_request (char *pkt, int mode, threadref *id)
2254 *pkt++ = 'q'; /* Info Query */
2255 *pkt++ = 'P'; /* process or thread info */
2256 pkt = pack_int (pkt, mode); /* mode */
2257 pkt = pack_threadid (pkt, id); /* threadid */
2258 *pkt = '\0'; /* terminate */
2262 /* These values tag the fields in a thread info response packet. */
2263 /* Tagging the fields allows us to request specific fields and to
2264 add more fields as time goes by. */
2266 #define TAG_THREADID 1 /* Echo the thread identifier. */
2267 #define TAG_EXISTS 2 /* Is this process defined enough to
2268 fetch registers and its stack? */
2269 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2270 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2271 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2275 remote_unpack_thread_info_response (char *pkt, threadref *expectedref,
2276 struct gdb_ext_thread_info *info)
2278 struct remote_state *rs = get_remote_state ();
2282 char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */
2285 /* info->threadid = 0; FIXME: implement zero_threadref. */
2287 info->display[0] = '\0';
2288 info->shortname[0] = '\0';
2289 info->more_display[0] = '\0';
2291 /* Assume the characters indicating the packet type have been
2293 pkt = unpack_int (pkt, &mask); /* arg mask */
2294 pkt = unpack_threadid (pkt, &ref);
2297 warning (_("Incomplete response to threadinfo request."));
2298 if (!threadmatch (&ref, expectedref))
2299 { /* This is an answer to a different request. */
2300 warning (_("ERROR RMT Thread info mismatch."));
2303 copy_threadref (&info->threadid, &ref);
2305 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2307 /* Packets are terminated with nulls. */
2308 while ((pkt < limit) && mask && *pkt)
2310 pkt = unpack_int (pkt, &tag); /* tag */
2311 pkt = unpack_byte (pkt, &length); /* length */
2312 if (!(tag & mask)) /* Tags out of synch with mask. */
2314 warning (_("ERROR RMT: threadinfo tag mismatch."));
2318 if (tag == TAG_THREADID)
2322 warning (_("ERROR RMT: length of threadid is not 16."));
2326 pkt = unpack_threadid (pkt, &ref);
2327 mask = mask & ~TAG_THREADID;
2330 if (tag == TAG_EXISTS)
2332 info->active = stub_unpack_int (pkt, length);
2334 mask = mask & ~(TAG_EXISTS);
2337 warning (_("ERROR RMT: 'exists' length too long."));
2343 if (tag == TAG_THREADNAME)
2345 pkt = unpack_string (pkt, &info->shortname[0], length);
2346 mask = mask & ~TAG_THREADNAME;
2349 if (tag == TAG_DISPLAY)
2351 pkt = unpack_string (pkt, &info->display[0], length);
2352 mask = mask & ~TAG_DISPLAY;
2355 if (tag == TAG_MOREDISPLAY)
2357 pkt = unpack_string (pkt, &info->more_display[0], length);
2358 mask = mask & ~TAG_MOREDISPLAY;
2361 warning (_("ERROR RMT: unknown thread info tag."));
2362 break; /* Not a tag we know about. */
2368 remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */
2369 struct gdb_ext_thread_info *info)
2371 struct remote_state *rs = get_remote_state ();
2374 pack_threadinfo_request (rs->buf, fieldset, threadid);
2376 getpkt (&rs->buf, &rs->buf_size, 0);
2378 if (rs->buf[0] == '\0')
2381 result = remote_unpack_thread_info_response (rs->buf + 2,
2386 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2389 pack_threadlist_request (char *pkt, int startflag, int threadcount,
2390 threadref *nextthread)
2392 *pkt++ = 'q'; /* info query packet */
2393 *pkt++ = 'L'; /* Process LIST or threadLIST request */
2394 pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */
2395 pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */
2396 pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */
2401 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2404 parse_threadlist_response (char *pkt, int result_limit,
2405 threadref *original_echo, threadref *resultlist,
2408 struct remote_state *rs = get_remote_state ();
2410 int count, resultcount, done;
2413 /* Assume the 'q' and 'M chars have been stripped. */
2414 limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE);
2415 /* done parse past here */
2416 pkt = unpack_byte (pkt, &count); /* count field */
2417 pkt = unpack_nibble (pkt, &done);
2418 /* The first threadid is the argument threadid. */
2419 pkt = unpack_threadid (pkt, original_echo); /* should match query packet */
2420 while ((count-- > 0) && (pkt < limit))
2422 pkt = unpack_threadid (pkt, resultlist++);
2423 if (resultcount++ >= result_limit)
2432 remote_get_threadlist (int startflag, threadref *nextthread, int result_limit,
2433 int *done, int *result_count, threadref *threadlist)
2435 struct remote_state *rs = get_remote_state ();
2438 /* Trancate result limit to be smaller than the packet size. */
2439 if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10)
2440 >= get_remote_packet_size ())
2441 result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2;
2443 pack_threadlist_request (rs->buf, startflag, result_limit, nextthread);
2445 getpkt (&rs->buf, &rs->buf_size, 0);
2447 if (*rs->buf == '\0')
2451 parse_threadlist_response (rs->buf + 2, result_limit,
2452 &rs->echo_nextthread, threadlist, done);
2454 if (!threadmatch (&rs->echo_nextthread, nextthread))
2456 /* FIXME: This is a good reason to drop the packet. */
2457 /* Possably, there is a duplicate response. */
2459 retransmit immediatly - race conditions
2460 retransmit after timeout - yes
2462 wait for packet, then exit
2464 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2465 return 0; /* I choose simply exiting. */
2467 if (*result_count <= 0)
2471 warning (_("RMT ERROR : failed to get remote thread list."));
2474 return result; /* break; */
2476 if (*result_count > result_limit)
2479 warning (_("RMT ERROR: threadlist response longer than requested."));
2485 /* This is the interface between remote and threads, remotes upper
2488 /* remote_find_new_threads retrieves the thread list and for each
2489 thread in the list, looks up the thread in GDB's internal list,
2490 adding the thread if it does not already exist. This involves
2491 getting partial thread lists from the remote target so, polling the
2492 quit_flag is required. */
2496 remote_threadlist_iterator (rmt_thread_action stepfunction, void *context,
2499 struct remote_state *rs = get_remote_state ();
2500 int done, i, result_count;
2508 if (loopcount++ > looplimit)
2511 warning (_("Remote fetch threadlist -infinite loop-."));
2514 if (!remote_get_threadlist (startflag, &rs->nextthread,
2515 MAXTHREADLISTRESULTS,
2516 &done, &result_count, rs->resultthreadlist))
2521 /* Clear for later iterations. */
2523 /* Setup to resume next batch of thread references, set nextthread. */
2524 if (result_count >= 1)
2525 copy_threadref (&rs->nextthread,
2526 &rs->resultthreadlist[result_count - 1]);
2528 while (result_count--)
2529 if (!(result = (*stepfunction) (&rs->resultthreadlist[i++], context)))
2536 remote_newthread_step (threadref *ref, void *context)
2538 int pid = ptid_get_pid (inferior_ptid);
2539 ptid_t ptid = ptid_build (pid, threadref_to_int (ref), 0);
2541 if (!in_thread_list (ptid))
2543 return 1; /* continue iterator */
2546 #define CRAZY_MAX_THREADS 1000
2549 remote_current_thread (ptid_t oldpid)
2551 struct remote_state *rs = get_remote_state ();
2554 getpkt (&rs->buf, &rs->buf_size, 0);
2555 if (rs->buf[0] == 'Q' && rs->buf[1] == 'C')
2556 return read_ptid (&rs->buf[2], NULL);
2561 /* Find new threads for info threads command.
2562 * Original version, using John Metzler's thread protocol.
2566 remote_find_new_threads (void)
2568 remote_threadlist_iterator (remote_newthread_step, 0,
2572 #if defined(HAVE_LIBEXPAT)
2574 typedef struct thread_item
2580 DEF_VEC_O(thread_item_t);
2582 struct threads_parsing_context
2584 VEC (thread_item_t) *items;
2588 start_thread (struct gdb_xml_parser *parser,
2589 const struct gdb_xml_element *element,
2590 void *user_data, VEC(gdb_xml_value_s) *attributes)
2592 struct threads_parsing_context *data = user_data;
2594 struct thread_item item;
2596 struct gdb_xml_value *attr;
2598 id = xml_find_attribute (attributes, "id")->value;
2599 item.ptid = read_ptid (id, NULL);
2601 attr = xml_find_attribute (attributes, "core");
2603 item.core = *(ULONGEST *) attr->value;
2609 VEC_safe_push (thread_item_t, data->items, &item);
2613 end_thread (struct gdb_xml_parser *parser,
2614 const struct gdb_xml_element *element,
2615 void *user_data, const char *body_text)
2617 struct threads_parsing_context *data = user_data;
2619 if (body_text && *body_text)
2620 VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text);
2623 const struct gdb_xml_attribute thread_attributes[] = {
2624 { "id", GDB_XML_AF_NONE, NULL, NULL },
2625 { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL },
2626 { NULL, GDB_XML_AF_NONE, NULL, NULL }
2629 const struct gdb_xml_element thread_children[] = {
2630 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2633 const struct gdb_xml_element threads_children[] = {
2634 { "thread", thread_attributes, thread_children,
2635 GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
2636 start_thread, end_thread },
2637 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2640 const struct gdb_xml_element threads_elements[] = {
2641 { "threads", NULL, threads_children,
2642 GDB_XML_EF_NONE, NULL, NULL },
2643 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2646 /* Discard the contents of the constructed thread info context. */
2649 clear_threads_parsing_context (void *p)
2651 struct threads_parsing_context *context = p;
2653 struct thread_item *item;
2655 for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i)
2656 xfree (item->extra);
2658 VEC_free (thread_item_t, context->items);
2664 * Find all threads for info threads command.
2665 * Uses new thread protocol contributed by Cisco.
2666 * Falls back and attempts to use the older method (above)
2667 * if the target doesn't respond to the new method.
2671 remote_threads_info (struct target_ops *ops)
2673 struct remote_state *rs = get_remote_state ();
2677 if (rs->remote_desc == 0) /* paranoia */
2678 error (_("Command can only be used when connected to the remote target."));
2680 #if defined(HAVE_LIBEXPAT)
2681 if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE)
2683 char *xml = target_read_stralloc (¤t_target,
2684 TARGET_OBJECT_THREADS, NULL);
2686 struct cleanup *back_to = make_cleanup (xfree, xml);
2690 struct threads_parsing_context context;
2692 context.items = NULL;
2693 make_cleanup (clear_threads_parsing_context, &context);
2695 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2696 threads_elements, xml, &context) == 0)
2699 struct thread_item *item;
2702 VEC_iterate (thread_item_t, context.items, i, item);
2705 if (!ptid_equal (item->ptid, null_ptid))
2707 struct private_thread_info *info;
2708 /* In non-stop mode, we assume new found threads
2709 are running until proven otherwise with a
2710 stop reply. In all-stop, we can only get
2711 here if all threads are stopped. */
2712 int running = non_stop ? 1 : 0;
2714 remote_notice_new_inferior (item->ptid, running);
2716 info = demand_private_info (item->ptid);
2717 info->core = item->core;
2718 info->extra = item->extra;
2725 do_cleanups (back_to);
2730 if (rs->use_threadinfo_query)
2732 putpkt ("qfThreadInfo");
2733 getpkt (&rs->buf, &rs->buf_size, 0);
2735 if (bufp[0] != '\0') /* q packet recognized */
2737 struct cleanup *old_chain;
2740 /* remote_notice_new_inferior (in the loop below) may make
2741 new RSP calls, which clobber rs->buf. Work with a
2743 bufp = saved_reply = xstrdup (rs->buf);
2744 old_chain = make_cleanup (free_current_contents, &saved_reply);
2746 while (*bufp++ == 'm') /* reply contains one or more TID */
2750 new_thread = read_ptid (bufp, &bufp);
2751 if (!ptid_equal (new_thread, null_ptid))
2753 /* In non-stop mode, we assume new found threads
2754 are running until proven otherwise with a
2755 stop reply. In all-stop, we can only get
2756 here if all threads are stopped. */
2757 int running = non_stop ? 1 : 0;
2759 remote_notice_new_inferior (new_thread, running);
2762 while (*bufp++ == ','); /* comma-separated list */
2763 free_current_contents (&saved_reply);
2764 putpkt ("qsThreadInfo");
2765 getpkt (&rs->buf, &rs->buf_size, 0);
2766 bufp = saved_reply = xstrdup (rs->buf);
2768 do_cleanups (old_chain);
2773 /* Only qfThreadInfo is supported in non-stop mode. */
2777 /* Else fall back to old method based on jmetzler protocol. */
2778 rs->use_threadinfo_query = 0;
2779 remote_find_new_threads ();
2784 * Collect a descriptive string about the given thread.
2785 * The target may say anything it wants to about the thread
2786 * (typically info about its blocked / runnable state, name, etc.).
2787 * This string will appear in the info threads display.
2789 * Optional: targets are not required to implement this function.
2793 remote_threads_extra_info (struct target_ops *self, struct thread_info *tp)
2795 struct remote_state *rs = get_remote_state ();
2799 struct gdb_ext_thread_info threadinfo;
2800 static char display_buf[100]; /* arbitrary... */
2801 int n = 0; /* position in display_buf */
2803 if (rs->remote_desc == 0) /* paranoia */
2804 internal_error (__FILE__, __LINE__,
2805 _("remote_threads_extra_info"));
2807 if (ptid_equal (tp->ptid, magic_null_ptid)
2808 || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0))
2809 /* This is the main thread which was added by GDB. The remote
2810 server doesn't know about it. */
2813 if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE)
2815 struct thread_info *info = find_thread_ptid (tp->ptid);
2817 if (info && info->private)
2818 return info->private->extra;
2823 if (rs->use_threadextra_query)
2826 char *endb = rs->buf + get_remote_packet_size ();
2828 xsnprintf (b, endb - b, "qThreadExtraInfo,");
2830 write_ptid (b, endb, tp->ptid);
2833 getpkt (&rs->buf, &rs->buf_size, 0);
2834 if (rs->buf[0] != 0)
2836 n = min (strlen (rs->buf) / 2, sizeof (display_buf));
2837 result = hex2bin (rs->buf, (gdb_byte *) display_buf, n);
2838 display_buf [result] = '\0';
2843 /* If the above query fails, fall back to the old method. */
2844 rs->use_threadextra_query = 0;
2845 set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
2846 | TAG_MOREDISPLAY | TAG_DISPLAY;
2847 int_to_threadref (&id, ptid_get_lwp (tp->ptid));
2848 if (remote_get_threadinfo (&id, set, &threadinfo))
2849 if (threadinfo.active)
2851 if (*threadinfo.shortname)
2852 n += xsnprintf (&display_buf[0], sizeof (display_buf) - n,
2853 " Name: %s,", threadinfo.shortname);
2854 if (*threadinfo.display)
2855 n += xsnprintf (&display_buf[n], sizeof (display_buf) - n,
2856 " State: %s,", threadinfo.display);
2857 if (*threadinfo.more_display)
2858 n += xsnprintf (&display_buf[n], sizeof (display_buf) - n,
2859 " Priority: %s", threadinfo.more_display);
2863 /* For purely cosmetic reasons, clear up trailing commas. */
2864 if (',' == display_buf[n-1])
2865 display_buf[n-1] = ' ';
2874 remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr,
2875 struct static_tracepoint_marker *marker)
2877 struct remote_state *rs = get_remote_state ();
2880 xsnprintf (p, get_remote_packet_size (), "qTSTMat:");
2882 p += hexnumstr (p, addr);
2884 getpkt (&rs->buf, &rs->buf_size, 0);
2888 error (_("Remote failure reply: %s"), p);
2892 parse_static_tracepoint_marker_definition (p, &p, marker);
2899 static VEC(static_tracepoint_marker_p) *
2900 remote_static_tracepoint_markers_by_strid (struct target_ops *self,
2903 struct remote_state *rs = get_remote_state ();
2904 VEC(static_tracepoint_marker_p) *markers = NULL;
2905 struct static_tracepoint_marker *marker = NULL;
2906 struct cleanup *old_chain;
2909 /* Ask for a first packet of static tracepoint marker
2912 getpkt (&rs->buf, &rs->buf_size, 0);
2915 error (_("Remote failure reply: %s"), p);
2917 old_chain = make_cleanup (free_current_marker, &marker);
2922 marker = XCNEW (struct static_tracepoint_marker);
2926 parse_static_tracepoint_marker_definition (p, &p, marker);
2928 if (strid == NULL || strcmp (strid, marker->str_id) == 0)
2930 VEC_safe_push (static_tracepoint_marker_p,
2936 release_static_tracepoint_marker (marker);
2937 memset (marker, 0, sizeof (*marker));
2940 while (*p++ == ','); /* comma-separated list */
2941 /* Ask for another packet of static tracepoint definition. */
2943 getpkt (&rs->buf, &rs->buf_size, 0);
2947 do_cleanups (old_chain);
2952 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2955 remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread)
2957 return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0);
2961 /* Restart the remote side; this is an extended protocol operation. */
2964 extended_remote_restart (void)
2966 struct remote_state *rs = get_remote_state ();
2968 /* Send the restart command; for reasons I don't understand the
2969 remote side really expects a number after the "R". */
2970 xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0);
2973 remote_fileio_reset ();
2976 /* Clean up connection to a remote debugger. */
2979 remote_close (struct target_ops *self)
2981 struct remote_state *rs = get_remote_state ();
2983 if (rs->remote_desc == NULL)
2984 return; /* already closed */
2986 /* Make sure we leave stdin registered in the event loop, and we
2987 don't leave the async SIGINT signal handler installed. */
2988 remote_terminal_ours (self);
2990 serial_close (rs->remote_desc);
2991 rs->remote_desc = NULL;
2993 /* We don't have a connection to the remote stub anymore. Get rid
2994 of all the inferiors and their threads we were controlling.
2995 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
2996 will be unable to find the thread corresponding to (pid, 0, 0). */
2997 inferior_ptid = null_ptid;
2998 discard_all_inferiors ();
3000 /* We are closing the remote target, so we should discard
3001 everything of this target. */
3002 discard_pending_stop_replies_in_queue (rs);
3004 if (remote_async_inferior_event_token)
3005 delete_async_event_handler (&remote_async_inferior_event_token);
3007 remote_notif_state_xfree (rs->notif_state);
3009 trace_reset_local_state ();
3012 /* Query the remote side for the text, data and bss offsets. */
3017 struct remote_state *rs = get_remote_state ();
3020 int lose, num_segments = 0, do_sections, do_segments;
3021 CORE_ADDR text_addr, data_addr, bss_addr, segments[2];
3022 struct section_offsets *offs;
3023 struct symfile_segment_data *data;
3025 if (symfile_objfile == NULL)
3028 putpkt ("qOffsets");
3029 getpkt (&rs->buf, &rs->buf_size, 0);
3032 if (buf[0] == '\000')
3033 return; /* Return silently. Stub doesn't support
3037 warning (_("Remote failure reply: %s"), buf);
3041 /* Pick up each field in turn. This used to be done with scanf, but
3042 scanf will make trouble if CORE_ADDR size doesn't match
3043 conversion directives correctly. The following code will work
3044 with any size of CORE_ADDR. */
3045 text_addr = data_addr = bss_addr = 0;
3049 if (strncmp (ptr, "Text=", 5) == 0)
3052 /* Don't use strtol, could lose on big values. */
3053 while (*ptr && *ptr != ';')
3054 text_addr = (text_addr << 4) + fromhex (*ptr++);
3056 if (strncmp (ptr, ";Data=", 6) == 0)
3059 while (*ptr && *ptr != ';')
3060 data_addr = (data_addr << 4) + fromhex (*ptr++);
3065 if (!lose && strncmp (ptr, ";Bss=", 5) == 0)
3068 while (*ptr && *ptr != ';')
3069 bss_addr = (bss_addr << 4) + fromhex (*ptr++);
3071 if (bss_addr != data_addr)
3072 warning (_("Target reported unsupported offsets: %s"), buf);
3077 else if (strncmp (ptr, "TextSeg=", 8) == 0)
3080 /* Don't use strtol, could lose on big values. */
3081 while (*ptr && *ptr != ';')
3082 text_addr = (text_addr << 4) + fromhex (*ptr++);
3085 if (strncmp (ptr, ";DataSeg=", 9) == 0)
3088 while (*ptr && *ptr != ';')
3089 data_addr = (data_addr << 4) + fromhex (*ptr++);
3097 error (_("Malformed response to offset query, %s"), buf);
3098 else if (*ptr != '\0')
3099 warning (_("Target reported unsupported offsets: %s"), buf);
3101 offs = ((struct section_offsets *)
3102 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)));
3103 memcpy (offs, symfile_objfile->section_offsets,
3104 SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections));
3106 data = get_symfile_segment_data (symfile_objfile->obfd);
3107 do_segments = (data != NULL);
3108 do_sections = num_segments == 0;
3110 if (num_segments > 0)
3112 segments[0] = text_addr;
3113 segments[1] = data_addr;
3115 /* If we have two segments, we can still try to relocate everything
3116 by assuming that the .text and .data offsets apply to the whole
3117 text and data segments. Convert the offsets given in the packet
3118 to base addresses for symfile_map_offsets_to_segments. */
3119 else if (data && data->num_segments == 2)
3121 segments[0] = data->segment_bases[0] + text_addr;
3122 segments[1] = data->segment_bases[1] + data_addr;
3125 /* If the object file has only one segment, assume that it is text
3126 rather than data; main programs with no writable data are rare,
3127 but programs with no code are useless. Of course the code might
3128 have ended up in the data segment... to detect that we would need
3129 the permissions here. */
3130 else if (data && data->num_segments == 1)
3132 segments[0] = data->segment_bases[0] + text_addr;
3135 /* There's no way to relocate by segment. */
3141 int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data,
3142 offs, num_segments, segments);
3144 if (ret == 0 && !do_sections)
3145 error (_("Can not handle qOffsets TextSeg "
3146 "response with this symbol file"));
3153 free_symfile_segment_data (data);
3157 offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr;
3159 /* This is a temporary kludge to force data and bss to use the
3160 same offsets because that's what nlmconv does now. The real
3161 solution requires changes to the stub and remote.c that I
3162 don't have time to do right now. */
3164 offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr;
3165 offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr;
3168 objfile_relocate (symfile_objfile, offs);
3171 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3172 threads we know are stopped already. This is used during the
3173 initial remote connection in non-stop mode --- threads that are
3174 reported as already being stopped are left stopped. */
3177 set_stop_requested_callback (struct thread_info *thread, void *data)
3179 /* If we have a stop reply for this thread, it must be stopped. */
3180 if (peek_stop_reply (thread->ptid))
3181 set_stop_requested (thread->ptid, 1);
3186 /* Send interrupt_sequence to remote target. */
3188 send_interrupt_sequence (void)
3190 struct remote_state *rs = get_remote_state ();
3192 if (interrupt_sequence_mode == interrupt_sequence_control_c)
3193 remote_serial_write ("\x03", 1);
3194 else if (interrupt_sequence_mode == interrupt_sequence_break)
3195 serial_send_break (rs->remote_desc);
3196 else if (interrupt_sequence_mode == interrupt_sequence_break_g)
3198 serial_send_break (rs->remote_desc);
3199 remote_serial_write ("g", 1);
3202 internal_error (__FILE__, __LINE__,
3203 _("Invalid value for interrupt_sequence_mode: %s."),
3204 interrupt_sequence_mode);
3208 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3209 and extract the PTID. Returns NULL_PTID if not found. */
3212 stop_reply_extract_thread (char *stop_reply)
3214 if (stop_reply[0] == 'T' && strlen (stop_reply) > 3)
3218 /* Txx r:val ; r:val (...) */
3221 /* Look for "register" named "thread". */
3226 p1 = strchr (p, ':');
3230 if (strncmp (p, "thread", p1 - p) == 0)
3231 return read_ptid (++p1, &p);
3233 p1 = strchr (p, ';');
3245 /* Determine the remote side's current thread. If we have a stop
3246 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3247 "thread" register we can extract the current thread from. If not,
3248 ask the remote which is the current thread with qC. The former
3249 method avoids a roundtrip. */
3252 get_current_thread (char *wait_status)
3256 /* Note we don't use remote_parse_stop_reply as that makes use of
3257 the target architecture, which we haven't yet fully determined at
3259 if (wait_status != NULL)
3260 ptid = stop_reply_extract_thread (wait_status);
3261 if (ptid_equal (ptid, null_ptid))
3262 ptid = remote_current_thread (inferior_ptid);
3267 /* Query the remote target for which is the current thread/process,
3268 add it to our tables, and update INFERIOR_PTID. The caller is
3269 responsible for setting the state such that the remote end is ready
3270 to return the current thread.
3272 This function is called after handling the '?' or 'vRun' packets,
3273 whose response is a stop reply from which we can also try
3274 extracting the thread. If the target doesn't support the explicit
3275 qC query, we infer the current thread from that stop reply, passed
3276 in in WAIT_STATUS, which may be NULL. */
3279 add_current_inferior_and_thread (char *wait_status)
3281 struct remote_state *rs = get_remote_state ();
3283 ptid_t ptid = null_ptid;
3285 inferior_ptid = null_ptid;
3287 /* Now, if we have thread information, update inferior_ptid. */
3288 ptid = get_current_thread (wait_status);
3290 if (!ptid_equal (ptid, null_ptid))
3292 if (!remote_multi_process_p (rs))
3295 inferior_ptid = ptid;
3299 /* Without this, some commands which require an active target
3300 (such as kill) won't work. This variable serves (at least)
3301 double duty as both the pid of the target process (if it has
3302 such), and as a flag indicating that a target is active. */
3303 inferior_ptid = magic_null_ptid;
3307 remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1);
3309 /* Add the main thread. */
3310 add_thread_silent (inferior_ptid);
3314 remote_start_remote (int from_tty, struct target_ops *target, int extended_p)
3316 struct remote_state *rs = get_remote_state ();
3317 struct packet_config *noack_config;
3318 char *wait_status = NULL;
3320 immediate_quit++; /* Allow user to interrupt it. */
3323 if (interrupt_on_connect)
3324 send_interrupt_sequence ();
3326 /* Ack any packet which the remote side has already sent. */
3327 serial_write (rs->remote_desc, "+", 1);
3329 /* Signal other parts that we're going through the initial setup,
3330 and so things may not be stable yet. */
3331 rs->starting_up = 1;
3333 /* The first packet we send to the target is the optional "supported
3334 packets" request. If the target can answer this, it will tell us
3335 which later probes to skip. */
3336 remote_query_supported ();
3338 /* If the stub wants to get a QAllow, compose one and send it. */
3339 if (packet_support (PACKET_QAllow) != PACKET_DISABLE)
3340 remote_set_permissions (target);
3342 /* Next, we possibly activate noack mode.
3344 If the QStartNoAckMode packet configuration is set to AUTO,
3345 enable noack mode if the stub reported a wish for it with
3348 If set to TRUE, then enable noack mode even if the stub didn't
3349 report it in qSupported. If the stub doesn't reply OK, the
3350 session ends with an error.
3352 If FALSE, then don't activate noack mode, regardless of what the
3353 stub claimed should be the default with qSupported. */
3355 noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode];
3356 if (packet_config_support (noack_config) != PACKET_DISABLE)
3358 putpkt ("QStartNoAckMode");
3359 getpkt (&rs->buf, &rs->buf_size, 0);
3360 if (packet_ok (rs->buf, noack_config) == PACKET_OK)
3366 /* Tell the remote that we are using the extended protocol. */
3368 getpkt (&rs->buf, &rs->buf_size, 0);
3371 /* Let the target know which signals it is allowed to pass down to
3373 update_signals_program_target ();
3375 /* Next, if the target can specify a description, read it. We do
3376 this before anything involving memory or registers. */
3377 target_find_description ();
3379 /* Next, now that we know something about the target, update the
3380 address spaces in the program spaces. */
3381 update_address_spaces ();
3383 /* On OSs where the list of libraries is global to all
3384 processes, we fetch them early. */
3385 if (gdbarch_has_global_solist (target_gdbarch ()))
3386 solib_add (NULL, from_tty, target, auto_solib_add);
3390 if (packet_support (PACKET_QNonStop) != PACKET_ENABLE)
3391 error (_("Non-stop mode requested, but remote "
3392 "does not support non-stop"));
3394 putpkt ("QNonStop:1");
3395 getpkt (&rs->buf, &rs->buf_size, 0);
3397 if (strcmp (rs->buf, "OK") != 0)
3398 error (_("Remote refused setting non-stop mode with: %s"), rs->buf);
3400 /* Find about threads and processes the stub is already
3401 controlling. We default to adding them in the running state.
3402 The '?' query below will then tell us about which threads are
3404 remote_threads_info (target);
3406 else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE)
3408 /* Don't assume that the stub can operate in all-stop mode.
3409 Request it explicitly. */
3410 putpkt ("QNonStop:0");
3411 getpkt (&rs->buf, &rs->buf_size, 0);
3413 if (strcmp (rs->buf, "OK") != 0)
3414 error (_("Remote refused setting all-stop mode with: %s"), rs->buf);
3417 /* Upload TSVs regardless of whether the target is running or not. The
3418 remote stub, such as GDBserver, may have some predefined or builtin
3419 TSVs, even if the target is not running. */
3420 if (remote_get_trace_status (target, current_trace_status ()) != -1)
3422 struct uploaded_tsv *uploaded_tsvs = NULL;
3424 remote_upload_trace_state_variables (target, &uploaded_tsvs);
3425 merge_uploaded_trace_state_variables (&uploaded_tsvs);
3428 /* Check whether the target is running now. */
3430 getpkt (&rs->buf, &rs->buf_size, 0);
3436 struct inferior *inf;
3438 if (rs->buf[0] == 'W' || rs->buf[0] == 'X')
3441 error (_("The target is not running (try extended-remote?)"));
3443 /* We're connected, but not running. Drop out before we
3444 call start_remote. */
3445 rs->starting_up = 0;
3450 /* Save the reply for later. */
3451 wait_status = alloca (strlen (rs->buf) + 1);
3452 strcpy (wait_status, rs->buf);
3455 /* Fetch thread list. */
3456 target_find_new_threads ();
3458 /* Let the stub know that we want it to return the thread. */
3459 set_continue_thread (minus_one_ptid);
3461 if (thread_count () == 0)
3463 /* Target has no concept of threads at all. GDB treats
3464 non-threaded target as single-threaded; add a main
3466 add_current_inferior_and_thread (wait_status);
3470 /* We have thread information; select the thread the target
3471 says should be current. If we're reconnecting to a
3472 multi-threaded program, this will ideally be the thread
3473 that last reported an event before GDB disconnected. */
3474 inferior_ptid = get_current_thread (wait_status);
3475 if (ptid_equal (inferior_ptid, null_ptid))
3477 /* Odd... The target was able to list threads, but not
3478 tell us which thread was current (no "thread"
3479 register in T stop reply?). Just pick the first
3480 thread in the thread list then. */
3481 inferior_ptid = thread_list->ptid;
3485 /* init_wait_for_inferior should be called before get_offsets in order
3486 to manage `inserted' flag in bp loc in a correct state.
3487 breakpoint_init_inferior, called from init_wait_for_inferior, set
3488 `inserted' flag to 0, while before breakpoint_re_set, called from
3489 start_remote, set `inserted' flag to 1. In the initialization of
3490 inferior, breakpoint_init_inferior should be called first, and then
3491 breakpoint_re_set can be called. If this order is broken, state of
3492 `inserted' flag is wrong, and cause some problems on breakpoint
3494 init_wait_for_inferior ();
3496 get_offsets (); /* Get text, data & bss offsets. */
3498 /* If we could not find a description using qXfer, and we know
3499 how to do it some other way, try again. This is not
3500 supported for non-stop; it could be, but it is tricky if
3501 there are no stopped threads when we connect. */
3502 if (remote_read_description_p (target)
3503 && gdbarch_target_desc (target_gdbarch ()) == NULL)
3505 target_clear_description ();
3506 target_find_description ();
3509 /* Use the previously fetched status. */
3510 gdb_assert (wait_status != NULL);
3511 strcpy (rs->buf, wait_status);
3512 rs->cached_wait_status = 1;
3515 start_remote (from_tty); /* Initialize gdb process mechanisms. */
3519 /* Clear WFI global state. Do this before finding about new
3520 threads and inferiors, and setting the current inferior.
3521 Otherwise we would clear the proceed status of the current
3522 inferior when we want its stop_soon state to be preserved
3523 (see notice_new_inferior). */
3524 init_wait_for_inferior ();
3526 /* In non-stop, we will either get an "OK", meaning that there
3527 are no stopped threads at this time; or, a regular stop
3528 reply. In the latter case, there may be more than one thread
3529 stopped --- we pull them all out using the vStopped
3531 if (strcmp (rs->buf, "OK") != 0)
3533 struct notif_client *notif = ¬if_client_stop;
3535 /* remote_notif_get_pending_replies acks this one, and gets
3537 rs->notif_state->pending_event[notif_client_stop.id]
3538 = remote_notif_parse (notif, rs->buf);
3539 remote_notif_get_pending_events (notif);
3541 /* Make sure that threads that were stopped remain
3543 iterate_over_threads (set_stop_requested_callback, NULL);
3546 if (target_can_async_p ())
3547 target_async (inferior_event_handler, 0);
3549 if (thread_count () == 0)
3552 error (_("The target is not running (try extended-remote?)"));
3554 /* We're connected, but not running. Drop out before we
3555 call start_remote. */
3556 rs->starting_up = 0;
3560 /* Let the stub know that we want it to return the thread. */
3562 /* Force the stub to choose a thread. */
3563 set_general_thread (null_ptid);
3566 inferior_ptid = remote_current_thread (minus_one_ptid);
3567 if (ptid_equal (inferior_ptid, minus_one_ptid))
3568 error (_("remote didn't report the current thread in non-stop mode"));
3570 get_offsets (); /* Get text, data & bss offsets. */
3572 /* In non-stop mode, any cached wait status will be stored in
3573 the stop reply queue. */
3574 gdb_assert (wait_status == NULL);
3576 /* Report all signals during attach/startup. */
3577 remote_pass_signals (target, 0, NULL);
3580 /* If we connected to a live target, do some additional setup. */
3581 if (target_has_execution)
3583 if (symfile_objfile) /* No use without a symbol-file. */
3584 remote_check_symbols ();
3587 /* Possibly the target has been engaged in a trace run started
3588 previously; find out where things are at. */
3589 if (remote_get_trace_status (target, current_trace_status ()) != -1)
3591 struct uploaded_tp *uploaded_tps = NULL;
3593 if (current_trace_status ()->running)
3594 printf_filtered (_("Trace is already running on the target.\n"));
3596 remote_upload_tracepoints (target, &uploaded_tps);
3598 merge_uploaded_tracepoints (&uploaded_tps);
3601 /* The thread and inferior lists are now synchronized with the
3602 target, our symbols have been relocated, and we're merged the
3603 target's tracepoints with ours. We're done with basic start
3605 rs->starting_up = 0;
3607 /* Maybe breakpoints are global and need to be inserted now. */
3608 if (breakpoints_should_be_inserted_now ())
3609 insert_breakpoints ();
3612 /* Open a connection to a remote debugger.
3613 NAME is the filename used for communication. */
3616 remote_open (const char *name, int from_tty)
3618 remote_open_1 (name, from_tty, &remote_ops, 0);
3621 /* Open a connection to a remote debugger using the extended
3622 remote gdb protocol. NAME is the filename used for communication. */
3625 extended_remote_open (const char *name, int from_tty)
3627 remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */);
3630 /* Reset all packets back to "unknown support". Called when opening a
3631 new connection to a remote target. */
3634 reset_all_packet_configs_support (void)
3638 for (i = 0; i < PACKET_MAX; i++)
3639 remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN;
3642 /* Initialize all packet configs. */
3645 init_all_packet_configs (void)
3649 for (i = 0; i < PACKET_MAX; i++)
3651 remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO;
3652 remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN;
3656 /* Symbol look-up. */
3659 remote_check_symbols (void)
3661 struct remote_state *rs = get_remote_state ();
3662 char *msg, *reply, *tmp;
3663 struct bound_minimal_symbol sym;
3666 /* The remote side has no concept of inferiors that aren't running
3667 yet, it only knows about running processes. If we're connected
3668 but our current inferior is not running, we should not invite the
3669 remote target to request symbol lookups related to its
3670 (unrelated) current process. */
3671 if (!target_has_execution)
3674 if (packet_support (PACKET_qSymbol) == PACKET_DISABLE)
3677 /* Make sure the remote is pointing at the right process. Note
3678 there's no way to select "no process". */
3679 set_general_process ();
3681 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3682 because we need both at the same time. */
3683 msg = alloca (get_remote_packet_size ());
3685 /* Invite target to request symbol lookups. */
3687 putpkt ("qSymbol::");
3688 getpkt (&rs->buf, &rs->buf_size, 0);
3689 packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]);
3692 while (strncmp (reply, "qSymbol:", 8) == 0)
3694 struct bound_minimal_symbol sym;
3697 end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2);
3699 sym = lookup_minimal_symbol (msg, NULL, NULL);
3700 if (sym.minsym == NULL)
3701 xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]);
3704 int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8;
3705 CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym);
3707 /* If this is a function address, return the start of code
3708 instead of any data function descriptor. */
3709 sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3713 xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s",
3714 phex_nz (sym_addr, addr_size), &reply[8]);
3718 getpkt (&rs->buf, &rs->buf_size, 0);
3723 static struct serial *
3724 remote_serial_open (const char *name)
3726 static int udp_warning = 0;
3728 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3729 of in ser-tcp.c, because it is the remote protocol assuming that the
3730 serial connection is reliable and not the serial connection promising
3732 if (!udp_warning && strncmp (name, "udp:", 4) == 0)
3734 warning (_("The remote protocol may be unreliable over UDP.\n"
3735 "Some events may be lost, rendering further debugging "
3740 return serial_open (name);
3743 /* Inform the target of our permission settings. The permission flags
3744 work without this, but if the target knows the settings, it can do
3745 a couple things. First, it can add its own check, to catch cases
3746 that somehow manage to get by the permissions checks in target
3747 methods. Second, if the target is wired to disallow particular
3748 settings (for instance, a system in the field that is not set up to
3749 be able to stop at a breakpoint), it can object to any unavailable
3753 remote_set_permissions (struct target_ops *self)
3755 struct remote_state *rs = get_remote_state ();
3757 xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:"
3758 "WriteReg:%x;WriteMem:%x;"
3759 "InsertBreak:%x;InsertTrace:%x;"
3760 "InsertFastTrace:%x;Stop:%x",
3761 may_write_registers, may_write_memory,
3762 may_insert_breakpoints, may_insert_tracepoints,
3763 may_insert_fast_tracepoints, may_stop);
3765 getpkt (&rs->buf, &rs->buf_size, 0);
3767 /* If the target didn't like the packet, warn the user. Do not try
3768 to undo the user's settings, that would just be maddening. */
3769 if (strcmp (rs->buf, "OK") != 0)
3770 warning (_("Remote refused setting permissions with: %s"), rs->buf);
3773 /* This type describes each known response to the qSupported
3775 struct protocol_feature
3777 /* The name of this protocol feature. */
3780 /* The default for this protocol feature. */
3781 enum packet_support default_support;
3783 /* The function to call when this feature is reported, or after
3784 qSupported processing if the feature is not supported.
3785 The first argument points to this structure. The second
3786 argument indicates whether the packet requested support be
3787 enabled, disabled, or probed (or the default, if this function
3788 is being called at the end of processing and this feature was
3789 not reported). The third argument may be NULL; if not NULL, it
3790 is a NUL-terminated string taken from the packet following
3791 this feature's name and an equals sign. */
3792 void (*func) (const struct protocol_feature *, enum packet_support,
3795 /* The corresponding packet for this feature. Only used if
3796 FUNC is remote_supported_packet. */
3801 remote_supported_packet (const struct protocol_feature *feature,
3802 enum packet_support support,
3803 const char *argument)
3807 warning (_("Remote qSupported response supplied an unexpected value for"
3808 " \"%s\"."), feature->name);
3812 remote_protocol_packets[feature->packet].support = support;
3816 remote_packet_size (const struct protocol_feature *feature,
3817 enum packet_support support, const char *value)
3819 struct remote_state *rs = get_remote_state ();
3824 if (support != PACKET_ENABLE)
3827 if (value == NULL || *value == '\0')
3829 warning (_("Remote target reported \"%s\" without a size."),
3835 packet_size = strtol (value, &value_end, 16);
3836 if (errno != 0 || *value_end != '\0' || packet_size < 0)
3838 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3839 feature->name, value);
3843 if (packet_size > MAX_REMOTE_PACKET_SIZE)
3845 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3846 packet_size, MAX_REMOTE_PACKET_SIZE);
3847 packet_size = MAX_REMOTE_PACKET_SIZE;
3850 /* Record the new maximum packet size. */
3851 rs->explicit_packet_size = packet_size;
3854 static const struct protocol_feature remote_protocol_features[] = {
3855 { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 },
3856 { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet,
3857 PACKET_qXfer_auxv },
3858 { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet,
3859 PACKET_qXfer_features },
3860 { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet,
3861 PACKET_qXfer_libraries },
3862 { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet,
3863 PACKET_qXfer_libraries_svr4 },
3864 { "augmented-libraries-svr4-read", PACKET_DISABLE,
3865 remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature },
3866 { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet,
3867 PACKET_qXfer_memory_map },
3868 { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet,
3869 PACKET_qXfer_spu_read },
3870 { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet,
3871 PACKET_qXfer_spu_write },
3872 { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet,
3873 PACKET_qXfer_osdata },
3874 { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet,
3875 PACKET_qXfer_threads },
3876 { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet,
3877 PACKET_qXfer_traceframe_info },
3878 { "QPassSignals", PACKET_DISABLE, remote_supported_packet,
3879 PACKET_QPassSignals },
3880 { "QProgramSignals", PACKET_DISABLE, remote_supported_packet,
3881 PACKET_QProgramSignals },
3882 { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet,
3883 PACKET_QStartNoAckMode },
3884 { "multiprocess", PACKET_DISABLE, remote_supported_packet,
3885 PACKET_multiprocess_feature },
3886 { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop },
3887 { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet,
3888 PACKET_qXfer_siginfo_read },
3889 { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet,
3890 PACKET_qXfer_siginfo_write },
3891 { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet,
3892 PACKET_ConditionalTracepoints },
3893 { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet,
3894 PACKET_ConditionalBreakpoints },
3895 { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet,
3896 PACKET_BreakpointCommands },
3897 { "FastTracepoints", PACKET_DISABLE, remote_supported_packet,
3898 PACKET_FastTracepoints },
3899 { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet,
3900 PACKET_StaticTracepoints },
3901 {"InstallInTrace", PACKET_DISABLE, remote_supported_packet,
3902 PACKET_InstallInTrace},
3903 { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet,
3904 PACKET_DisconnectedTracing_feature },
3905 { "ReverseContinue", PACKET_DISABLE, remote_supported_packet,
3907 { "ReverseStep", PACKET_DISABLE, remote_supported_packet,
3909 { "TracepointSource", PACKET_DISABLE, remote_supported_packet,
3910 PACKET_TracepointSource },
3911 { "QAllow", PACKET_DISABLE, remote_supported_packet,
3913 { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet,
3914 PACKET_EnableDisableTracepoints_feature },
3915 { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet,
3916 PACKET_qXfer_fdpic },
3917 { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet,
3919 { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet,
3920 PACKET_QDisableRandomization },
3921 { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent},
3922 { "QTBuffer:size", PACKET_DISABLE,
3923 remote_supported_packet, PACKET_QTBuffer_size},
3924 { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature },
3925 { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off },
3926 { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts },
3927 { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet,
3928 PACKET_qXfer_btrace }
3931 static char *remote_support_xml;
3933 /* Register string appended to "xmlRegisters=" in qSupported query. */
3936 register_remote_support_xml (const char *xml)
3938 #if defined(HAVE_LIBEXPAT)
3939 if (remote_support_xml == NULL)
3940 remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL);
3943 char *copy = xstrdup (remote_support_xml + 13);
3944 char *p = strtok (copy, ",");
3948 if (strcmp (p, xml) == 0)
3955 while ((p = strtok (NULL, ",")) != NULL);
3958 remote_support_xml = reconcat (remote_support_xml,
3959 remote_support_xml, ",", xml,
3966 remote_query_supported_append (char *msg, const char *append)
3969 return reconcat (msg, msg, ";", append, (char *) NULL);
3971 return xstrdup (append);
3975 remote_query_supported (void)
3977 struct remote_state *rs = get_remote_state ();
3980 unsigned char seen [ARRAY_SIZE (remote_protocol_features)];
3982 /* The packet support flags are handled differently for this packet
3983 than for most others. We treat an error, a disabled packet, and
3984 an empty response identically: any features which must be reported
3985 to be used will be automatically disabled. An empty buffer
3986 accomplishes this, since that is also the representation for a list
3987 containing no features. */
3990 if (packet_support (PACKET_qSupported) != PACKET_DISABLE)
3993 struct cleanup *old_chain = make_cleanup (free_current_contents, &q);
3995 q = remote_query_supported_append (q, "multiprocess+");
3997 if (remote_support_xml)
3998 q = remote_query_supported_append (q, remote_support_xml);
4000 q = remote_query_supported_append (q, "qRelocInsn+");
4002 q = reconcat (q, "qSupported:", q, (char *) NULL);
4005 do_cleanups (old_chain);
4007 getpkt (&rs->buf, &rs->buf_size, 0);
4009 /* If an error occured, warn, but do not return - just reset the
4010 buffer to empty and go on to disable features. */
4011 if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported])
4014 warning (_("Remote failure reply: %s"), rs->buf);
4019 memset (seen, 0, sizeof (seen));
4024 enum packet_support is_supported;
4025 char *p, *end, *name_end, *value;
4027 /* First separate out this item from the rest of the packet. If
4028 there's another item after this, we overwrite the separator
4029 (terminated strings are much easier to work with). */
4031 end = strchr (p, ';');
4034 end = p + strlen (p);
4044 warning (_("empty item in \"qSupported\" response"));
4049 name_end = strchr (p, '=');
4052 /* This is a name=value entry. */
4053 is_supported = PACKET_ENABLE;
4054 value = name_end + 1;
4063 is_supported = PACKET_ENABLE;
4067 is_supported = PACKET_DISABLE;
4071 is_supported = PACKET_SUPPORT_UNKNOWN;
4075 warning (_("unrecognized item \"%s\" "
4076 "in \"qSupported\" response"), p);
4082 for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++)
4083 if (strcmp (remote_protocol_features[i].name, p) == 0)
4085 const struct protocol_feature *feature;
4088 feature = &remote_protocol_features[i];
4089 feature->func (feature, is_supported, value);
4094 /* If we increased the packet size, make sure to increase the global
4095 buffer size also. We delay this until after parsing the entire
4096 qSupported packet, because this is the same buffer we were
4098 if (rs->buf_size < rs->explicit_packet_size)
4100 rs->buf_size = rs->explicit_packet_size;
4101 rs->buf = xrealloc (rs->buf, rs->buf_size);
4104 /* Handle the defaults for unmentioned features. */
4105 for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++)
4108 const struct protocol_feature *feature;
4110 feature = &remote_protocol_features[i];
4111 feature->func (feature, feature->default_support, NULL);
4115 /* Remove any of the remote.c targets from target stack. Upper targets depend
4116 on it so remove them first. */
4119 remote_unpush_target (void)
4121 pop_all_targets_above (process_stratum - 1);
4125 remote_open_1 (const char *name, int from_tty,
4126 struct target_ops *target, int extended_p)
4128 struct remote_state *rs = get_remote_state ();
4131 error (_("To open a remote debug connection, you need to specify what\n"
4132 "serial device is attached to the remote system\n"
4133 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4135 /* See FIXME above. */
4136 if (!target_async_permitted)
4137 wait_forever_enabled_p = 1;
4139 /* If we're connected to a running target, target_preopen will kill it.
4140 Ask this question first, before target_preopen has a chance to kill
4142 if (rs->remote_desc != NULL && !have_inferiors ())
4145 && !query (_("Already connected to a remote target. Disconnect? ")))
4146 error (_("Still connected."));
4149 /* Here the possibly existing remote target gets unpushed. */
4150 target_preopen (from_tty);
4152 /* Make sure we send the passed signals list the next time we resume. */
4153 xfree (rs->last_pass_packet);
4154 rs->last_pass_packet = NULL;
4156 /* Make sure we send the program signals list the next time we
4158 xfree (rs->last_program_signals_packet);
4159 rs->last_program_signals_packet = NULL;
4161 remote_fileio_reset ();
4162 reopen_exec_file ();
4165 rs->remote_desc = remote_serial_open (name);
4166 if (!rs->remote_desc)
4167 perror_with_name (name);
4169 if (baud_rate != -1)
4171 if (serial_setbaudrate (rs->remote_desc, baud_rate))
4173 /* The requested speed could not be set. Error out to
4174 top level after closing remote_desc. Take care to
4175 set remote_desc to NULL to avoid closing remote_desc
4177 serial_close (rs->remote_desc);
4178 rs->remote_desc = NULL;
4179 perror_with_name (name);
4183 serial_raw (rs->remote_desc);
4185 /* If there is something sitting in the buffer we might take it as a
4186 response to a command, which would be bad. */
4187 serial_flush_input (rs->remote_desc);
4191 puts_filtered ("Remote debugging using ");
4192 puts_filtered (name);
4193 puts_filtered ("\n");
4195 push_target (target); /* Switch to using remote target now. */
4197 /* Register extra event sources in the event loop. */
4198 remote_async_inferior_event_token
4199 = create_async_event_handler (remote_async_inferior_event_handler,
4201 rs->notif_state = remote_notif_state_allocate ();
4203 /* Reset the target state; these things will be queried either by
4204 remote_query_supported or as they are needed. */
4205 reset_all_packet_configs_support ();
4206 rs->cached_wait_status = 0;
4207 rs->explicit_packet_size = 0;
4209 rs->extended = extended_p;
4210 rs->waiting_for_stop_reply = 0;
4211 rs->ctrlc_pending_p = 0;
4213 rs->general_thread = not_sent_ptid;
4214 rs->continue_thread = not_sent_ptid;
4215 rs->remote_traceframe_number = -1;
4217 /* Probe for ability to use "ThreadInfo" query, as required. */
4218 rs->use_threadinfo_query = 1;
4219 rs->use_threadextra_query = 1;
4221 if (target_async_permitted)
4223 /* With this target we start out by owning the terminal. */
4224 remote_async_terminal_ours_p = 1;
4226 /* FIXME: cagney/1999-09-23: During the initial connection it is
4227 assumed that the target is already ready and able to respond to
4228 requests. Unfortunately remote_start_remote() eventually calls
4229 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4230 around this. Eventually a mechanism that allows
4231 wait_for_inferior() to expect/get timeouts will be
4233 wait_forever_enabled_p = 0;
4236 /* First delete any symbols previously loaded from shared libraries. */
4237 no_shared_libraries (NULL, 0);
4240 init_thread_list ();
4242 /* Start the remote connection. If error() or QUIT, discard this
4243 target (we'd otherwise be in an inconsistent state) and then
4244 propogate the error on up the exception chain. This ensures that
4245 the caller doesn't stumble along blindly assuming that the
4246 function succeeded. The CLI doesn't have this problem but other
4247 UI's, such as MI do.
4249 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4250 this function should return an error indication letting the
4251 caller restore the previous state. Unfortunately the command
4252 ``target remote'' is directly wired to this function making that
4253 impossible. On a positive note, the CLI side of this problem has
4254 been fixed - the function set_cmd_context() makes it possible for
4255 all the ``target ....'' commands to share a common callback
4256 function. See cli-dump.c. */
4258 volatile struct gdb_exception ex;
4260 TRY_CATCH (ex, RETURN_MASK_ALL)
4262 remote_start_remote (from_tty, target, extended_p);
4266 /* Pop the partially set up target - unless something else did
4267 already before throwing the exception. */
4268 if (rs->remote_desc != NULL)
4269 remote_unpush_target ();
4270 if (target_async_permitted)
4271 wait_forever_enabled_p = 1;
4272 throw_exception (ex);
4276 if (target_async_permitted)
4277 wait_forever_enabled_p = 1;
4280 /* This takes a program previously attached to and detaches it. After
4281 this is done, GDB can be used to debug some other program. We
4282 better not have left any breakpoints in the target program or it'll
4283 die when it hits one. */
4286 remote_detach_1 (const char *args, int from_tty, int extended)
4288 int pid = ptid_get_pid (inferior_ptid);
4289 struct remote_state *rs = get_remote_state ();
4292 error (_("Argument given to \"detach\" when remotely debugging."));
4294 if (!target_has_execution)
4295 error (_("No process to detach from."));
4299 char *exec_file = get_exec_file (0);
4300 if (exec_file == NULL)
4302 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file,
4303 target_pid_to_str (pid_to_ptid (pid)));
4304 gdb_flush (gdb_stdout);
4307 /* Tell the remote target to detach. */
4308 if (remote_multi_process_p (rs))
4309 xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid);
4311 strcpy (rs->buf, "D");
4314 getpkt (&rs->buf, &rs->buf_size, 0);
4316 if (rs->buf[0] == 'O' && rs->buf[1] == 'K')
4318 else if (rs->buf[0] == '\0')
4319 error (_("Remote doesn't know how to detach"));
4321 error (_("Can't detach process."));
4323 if (from_tty && !extended)
4324 puts_filtered (_("Ending remote debugging.\n"));
4326 target_mourn_inferior ();
4330 remote_detach (struct target_ops *ops, const char *args, int from_tty)
4332 remote_detach_1 (args, from_tty, 0);
4336 extended_remote_detach (struct target_ops *ops, const char *args, int from_tty)
4338 remote_detach_1 (args, from_tty, 1);
4341 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4344 remote_disconnect (struct target_ops *target, const char *args, int from_tty)
4347 error (_("Argument given to \"disconnect\" when remotely debugging."));
4349 /* Make sure we unpush even the extended remote targets; mourn
4350 won't do it. So call remote_mourn_1 directly instead of
4351 target_mourn_inferior. */
4352 remote_mourn_1 (target);
4355 puts_filtered ("Ending remote debugging.\n");
4358 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4359 be chatty about it. */
4362 extended_remote_attach_1 (struct target_ops *target, const char *args,
4365 struct remote_state *rs = get_remote_state ();
4367 char *wait_status = NULL;
4369 pid = parse_pid_to_attach (args);
4371 /* Remote PID can be freely equal to getpid, do not check it here the same
4372 way as in other targets. */
4374 if (packet_support (PACKET_vAttach) == PACKET_DISABLE)
4375 error (_("This target does not support attaching to a process"));
4379 char *exec_file = get_exec_file (0);
4382 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file,
4383 target_pid_to_str (pid_to_ptid (pid)));
4385 printf_unfiltered (_("Attaching to %s\n"),
4386 target_pid_to_str (pid_to_ptid (pid)));
4388 gdb_flush (gdb_stdout);
4391 xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid);
4393 getpkt (&rs->buf, &rs->buf_size, 0);
4395 switch (packet_ok (rs->buf,
4396 &remote_protocol_packets[PACKET_vAttach]))
4401 /* Save the reply for later. */
4402 wait_status = alloca (strlen (rs->buf) + 1);
4403 strcpy (wait_status, rs->buf);
4405 else if (strcmp (rs->buf, "OK") != 0)
4406 error (_("Attaching to %s failed with: %s"),
4407 target_pid_to_str (pid_to_ptid (pid)),
4410 case PACKET_UNKNOWN:
4411 error (_("This target does not support attaching to a process"));
4413 error (_("Attaching to %s failed"),
4414 target_pid_to_str (pid_to_ptid (pid)));
4417 set_current_inferior (remote_add_inferior (0, pid, 1));
4419 inferior_ptid = pid_to_ptid (pid);
4423 struct thread_info *thread;
4425 /* Get list of threads. */
4426 remote_threads_info (target);
4428 thread = first_thread_of_process (pid);
4430 inferior_ptid = thread->ptid;
4432 inferior_ptid = pid_to_ptid (pid);
4434 /* Invalidate our notion of the remote current thread. */
4435 record_currthread (rs, minus_one_ptid);
4439 /* Now, if we have thread information, update inferior_ptid. */
4440 inferior_ptid = remote_current_thread (inferior_ptid);
4442 /* Add the main thread to the thread list. */
4443 add_thread_silent (inferior_ptid);
4446 /* Next, if the target can specify a description, read it. We do
4447 this before anything involving memory or registers. */
4448 target_find_description ();
4452 /* Use the previously fetched status. */
4453 gdb_assert (wait_status != NULL);
4455 if (target_can_async_p ())
4457 struct notif_event *reply
4458 = remote_notif_parse (¬if_client_stop, wait_status);
4460 push_stop_reply ((struct stop_reply *) reply);
4462 target_async (inferior_event_handler, 0);
4466 gdb_assert (wait_status != NULL);
4467 strcpy (rs->buf, wait_status);
4468 rs->cached_wait_status = 1;
4472 gdb_assert (wait_status == NULL);
4476 extended_remote_attach (struct target_ops *ops, const char *args, int from_tty)
4478 extended_remote_attach_1 (ops, args, from_tty);
4481 /* Implementation of the to_post_attach method. */
4484 extended_remote_post_attach (struct target_ops *ops, int pid)
4486 /* In certain cases GDB might not have had the chance to start
4487 symbol lookup up until now. This could happen if the debugged
4488 binary is not using shared libraries, the vsyscall page is not
4489 present (on Linux) and the binary itself hadn't changed since the
4490 debugging process was started. */
4491 if (symfile_objfile != NULL)
4492 remote_check_symbols();
4496 /* Check for the availability of vCont. This function should also check
4500 remote_vcont_probe (struct remote_state *rs)
4504 strcpy (rs->buf, "vCont?");
4506 getpkt (&rs->buf, &rs->buf_size, 0);
4509 /* Make sure that the features we assume are supported. */
4510 if (strncmp (buf, "vCont", 5) == 0)
4513 int support_s, support_S, support_c, support_C;
4519 rs->supports_vCont.t = 0;
4520 rs->supports_vCont.r = 0;
4521 while (p && *p == ';')
4524 if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0))
4526 else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0))
4528 else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0))
4530 else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0))
4532 else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0))
4533 rs->supports_vCont.t = 1;
4534 else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0))
4535 rs->supports_vCont.r = 1;
4537 p = strchr (p, ';');
4540 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4541 BUF will make packet_ok disable the packet. */
4542 if (!support_s || !support_S || !support_c || !support_C)
4546 packet_ok (buf, &remote_protocol_packets[PACKET_vCont]);
4549 /* Helper function for building "vCont" resumptions. Write a
4550 resumption to P. ENDP points to one-passed-the-end of the buffer
4551 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4552 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4553 resumed thread should be single-stepped and/or signalled. If PTID
4554 equals minus_one_ptid, then all threads are resumed; if PTID
4555 represents a process, then all threads of the process are resumed;
4556 the thread to be stepped and/or signalled is given in the global
4560 append_resumption (char *p, char *endp,
4561 ptid_t ptid, int step, enum gdb_signal siggnal)
4563 struct remote_state *rs = get_remote_state ();
4565 if (step && siggnal != GDB_SIGNAL_0)
4566 p += xsnprintf (p, endp - p, ";S%02x", siggnal);
4568 /* GDB is willing to range step. */
4569 && use_range_stepping
4570 /* Target supports range stepping. */
4571 && rs->supports_vCont.r
4572 /* We don't currently support range stepping multiple
4573 threads with a wildcard (though the protocol allows it,
4574 so stubs shouldn't make an active effort to forbid
4576 && !(remote_multi_process_p (rs) && ptid_is_pid (ptid)))
4578 struct thread_info *tp;
4580 if (ptid_equal (ptid, minus_one_ptid))
4582 /* If we don't know about the target thread's tid, then
4583 we're resuming magic_null_ptid (see caller). */
4584 tp = find_thread_ptid (magic_null_ptid);
4587 tp = find_thread_ptid (ptid);
4588 gdb_assert (tp != NULL);
4590 if (tp->control.may_range_step)
4592 int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8;
4594 p += xsnprintf (p, endp - p, ";r%s,%s",
4595 phex_nz (tp->control.step_range_start,
4597 phex_nz (tp->control.step_range_end,
4601 p += xsnprintf (p, endp - p, ";s");
4604 p += xsnprintf (p, endp - p, ";s");
4605 else if (siggnal != GDB_SIGNAL_0)
4606 p += xsnprintf (p, endp - p, ";C%02x", siggnal);
4608 p += xsnprintf (p, endp - p, ";c");
4610 if (remote_multi_process_p (rs) && ptid_is_pid (ptid))
4614 /* All (-1) threads of process. */
4615 nptid = ptid_build (ptid_get_pid (ptid), -1, 0);
4617 p += xsnprintf (p, endp - p, ":");
4618 p = write_ptid (p, endp, nptid);
4620 else if (!ptid_equal (ptid, minus_one_ptid))
4622 p += xsnprintf (p, endp - p, ":");
4623 p = write_ptid (p, endp, ptid);
4629 /* Append a vCont continue-with-signal action for threads that have a
4630 non-zero stop signal. */
4633 append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid)
4635 struct thread_info *thread;
4637 ALL_NON_EXITED_THREADS (thread)
4638 if (ptid_match (thread->ptid, ptid)
4639 && !ptid_equal (inferior_ptid, thread->ptid)
4640 && thread->suspend.stop_signal != GDB_SIGNAL_0)
4642 p = append_resumption (p, endp, thread->ptid,
4643 0, thread->suspend.stop_signal);
4644 thread->suspend.stop_signal = GDB_SIGNAL_0;
4650 /* Resume the remote inferior by using a "vCont" packet. The thread
4651 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4652 resumed thread should be single-stepped and/or signalled. If PTID
4653 equals minus_one_ptid, then all threads are resumed; the thread to
4654 be stepped and/or signalled is given in the global INFERIOR_PTID.
4655 This function returns non-zero iff it resumes the inferior.
4657 This function issues a strict subset of all possible vCont commands at the
4661 remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal)
4663 struct remote_state *rs = get_remote_state ();
4667 if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN)
4668 remote_vcont_probe (rs);
4670 if (packet_support (PACKET_vCont) == PACKET_DISABLE)
4674 endp = rs->buf + get_remote_packet_size ();
4676 /* If we could generate a wider range of packets, we'd have to worry
4677 about overflowing BUF. Should there be a generic
4678 "multi-part-packet" packet? */
4680 p += xsnprintf (p, endp - p, "vCont");
4682 if (ptid_equal (ptid, magic_null_ptid))
4684 /* MAGIC_NULL_PTID means that we don't have any active threads,
4685 so we don't have any TID numbers the inferior will
4686 understand. Make sure to only send forms that do not specify
4688 append_resumption (p, endp, minus_one_ptid, step, siggnal);
4690 else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid))
4692 /* Resume all threads (of all processes, or of a single
4693 process), with preference for INFERIOR_PTID. This assumes
4694 inferior_ptid belongs to the set of all threads we are about
4696 if (step || siggnal != GDB_SIGNAL_0)
4698 /* Step inferior_ptid, with or without signal. */
4699 p = append_resumption (p, endp, inferior_ptid, step, siggnal);
4702 /* Also pass down any pending signaled resumption for other
4703 threads not the current. */
4704 p = append_pending_thread_resumptions (p, endp, ptid);
4706 /* And continue others without a signal. */
4707 append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0);
4711 /* Scheduler locking; resume only PTID. */
4712 append_resumption (p, endp, ptid, step, siggnal);
4715 gdb_assert (strlen (rs->buf) < get_remote_packet_size ());
4720 /* In non-stop, the stub replies to vCont with "OK". The stop
4721 reply will be reported asynchronously by means of a `%Stop'
4723 getpkt (&rs->buf, &rs->buf_size, 0);
4724 if (strcmp (rs->buf, "OK") != 0)
4725 error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf);
4731 /* Tell the remote machine to resume. */
4734 remote_resume (struct target_ops *ops,
4735 ptid_t ptid, int step, enum gdb_signal siggnal)
4737 struct remote_state *rs = get_remote_state ();
4740 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4741 (explained in remote-notif.c:handle_notification) so
4742 remote_notif_process is not called. We need find a place where
4743 it is safe to start a 'vNotif' sequence. It is good to do it
4744 before resuming inferior, because inferior was stopped and no RSP
4745 traffic at that moment. */
4747 remote_notif_process (rs->notif_state, ¬if_client_stop);
4749 rs->last_sent_signal = siggnal;
4750 rs->last_sent_step = step;
4752 /* The vCont packet doesn't need to specify threads via Hc. */
4753 /* No reverse support (yet) for vCont. */
4754 if (execution_direction != EXEC_REVERSE)
4755 if (remote_vcont_resume (ptid, step, siggnal))
4758 /* All other supported resume packets do use Hc, so set the continue
4760 if (ptid_equal (ptid, minus_one_ptid))
4761 set_continue_thread (any_thread_ptid);
4763 set_continue_thread (ptid);
4766 if (execution_direction == EXEC_REVERSE)
4768 /* We don't pass signals to the target in reverse exec mode. */
4769 if (info_verbose && siggnal != GDB_SIGNAL_0)
4770 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4773 if (step && packet_support (PACKET_bs) == PACKET_DISABLE)
4774 error (_("Remote reverse-step not supported."));
4775 if (!step && packet_support (PACKET_bc) == PACKET_DISABLE)
4776 error (_("Remote reverse-continue not supported."));
4778 strcpy (buf, step ? "bs" : "bc");
4780 else if (siggnal != GDB_SIGNAL_0)
4782 buf[0] = step ? 'S' : 'C';
4783 buf[1] = tohex (((int) siggnal >> 4) & 0xf);
4784 buf[2] = tohex (((int) siggnal) & 0xf);
4788 strcpy (buf, step ? "s" : "c");
4793 /* We are about to start executing the inferior, let's register it
4794 with the event loop. NOTE: this is the one place where all the
4795 execution commands end up. We could alternatively do this in each
4796 of the execution commands in infcmd.c. */
4797 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4798 into infcmd.c in order to allow inferior function calls to work
4799 NOT asynchronously. */
4800 if (target_can_async_p ())
4801 target_async (inferior_event_handler, 0);
4803 /* We've just told the target to resume. The remote server will
4804 wait for the inferior to stop, and then send a stop reply. In
4805 the mean time, we can't start another command/query ourselves
4806 because the stub wouldn't be ready to process it. This applies
4807 only to the base all-stop protocol, however. In non-stop (which
4808 only supports vCont), the stub replies with an "OK", and is
4809 immediate able to process further serial input. */
4811 rs->waiting_for_stop_reply = 1;
4815 /* Set up the signal handler for SIGINT, while the target is
4816 executing, ovewriting the 'regular' SIGINT signal handler. */
4818 async_initialize_sigint_signal_handler (void)
4820 signal (SIGINT, async_handle_remote_sigint);
4823 /* Signal handler for SIGINT, while the target is executing. */
4825 async_handle_remote_sigint (int sig)
4827 signal (sig, async_handle_remote_sigint_twice);
4828 /* Note we need to go through gdb_call_async_signal_handler in order
4829 to wake up the event loop on Windows. */
4830 gdb_call_async_signal_handler (async_sigint_remote_token, 0);
4833 /* Signal handler for SIGINT, installed after SIGINT has already been
4834 sent once. It will take effect the second time that the user sends
4837 async_handle_remote_sigint_twice (int sig)
4839 signal (sig, async_handle_remote_sigint);
4840 /* See note in async_handle_remote_sigint. */
4841 gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0);
4844 /* Perform the real interruption of the target execution, in response
4847 async_remote_interrupt (gdb_client_data arg)
4850 fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n");
4852 target_stop (inferior_ptid);
4855 /* Perform interrupt, if the first attempt did not succeed. Just give
4856 up on the target alltogether. */
4858 async_remote_interrupt_twice (gdb_client_data arg)
4861 fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n");
4866 /* Reinstall the usual SIGINT handlers, after the target has
4869 async_cleanup_sigint_signal_handler (void *dummy)
4871 signal (SIGINT, handle_sigint);
4874 /* Send ^C to target to halt it. Target will respond, and send us a
4876 static void (*ofunc) (int);
4878 /* The command line interface's stop routine. This function is installed
4879 as a signal handler for SIGINT. The first time a user requests a
4880 stop, we call remote_stop to send a break or ^C. If there is no
4881 response from the target (it didn't stop when the user requested it),
4882 we ask the user if he'd like to detach from the target. */
4884 sync_remote_interrupt (int signo)
4886 /* If this doesn't work, try more severe steps. */
4887 signal (signo, sync_remote_interrupt_twice);
4889 gdb_call_async_signal_handler (async_sigint_remote_token, 1);
4892 /* The user typed ^C twice. */
4895 sync_remote_interrupt_twice (int signo)
4897 signal (signo, ofunc);
4898 gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1);
4899 signal (signo, sync_remote_interrupt);
4902 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4903 thread, all threads of a remote process, or all threads of all
4907 remote_stop_ns (ptid_t ptid)
4909 struct remote_state *rs = get_remote_state ();
4911 char *endp = rs->buf + get_remote_packet_size ();
4913 if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN)
4914 remote_vcont_probe (rs);
4916 if (!rs->supports_vCont.t)
4917 error (_("Remote server does not support stopping threads"));
4919 if (ptid_equal (ptid, minus_one_ptid)
4920 || (!remote_multi_process_p (rs) && ptid_is_pid (ptid)))
4921 p += xsnprintf (p, endp - p, "vCont;t");
4926 p += xsnprintf (p, endp - p, "vCont;t:");
4928 if (ptid_is_pid (ptid))
4929 /* All (-1) threads of process. */
4930 nptid = ptid_build (ptid_get_pid (ptid), -1, 0);
4933 /* Small optimization: if we already have a stop reply for
4934 this thread, no use in telling the stub we want this
4936 if (peek_stop_reply (ptid))
4942 write_ptid (p, endp, nptid);
4945 /* In non-stop, we get an immediate OK reply. The stop reply will
4946 come in asynchronously by notification. */
4948 getpkt (&rs->buf, &rs->buf_size, 0);
4949 if (strcmp (rs->buf, "OK") != 0)
4950 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf);
4953 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4954 remote target. It is undefined which thread of which process
4955 reports the stop. */
4958 remote_stop_as (ptid_t ptid)
4960 struct remote_state *rs = get_remote_state ();
4962 rs->ctrlc_pending_p = 1;
4964 /* If the inferior is stopped already, but the core didn't know
4965 about it yet, just ignore the request. The cached wait status
4966 will be collected in remote_wait. */
4967 if (rs->cached_wait_status)
4970 /* Send interrupt_sequence to remote target. */
4971 send_interrupt_sequence ();
4974 /* This is the generic stop called via the target vector. When a target
4975 interrupt is requested, either by the command line or the GUI, we
4976 will eventually end up here. */
4979 remote_stop (struct target_ops *self, ptid_t ptid)
4982 fprintf_unfiltered (gdb_stdlog, "remote_stop called\n");
4985 remote_stop_ns (ptid);
4987 remote_stop_as (ptid);
4990 /* Ask the user what to do when an interrupt is received. */
4993 interrupt_query (void)
4995 target_terminal_ours ();
4997 if (target_can_async_p ())
4999 signal (SIGINT, handle_sigint);
5004 if (query (_("Interrupted while waiting for the program.\n\
5005 Give up (and stop debugging it)? ")))
5007 remote_unpush_target ();
5012 target_terminal_inferior ();
5015 /* Enable/disable target terminal ownership. Most targets can use
5016 terminal groups to control terminal ownership. Remote targets are
5017 different in that explicit transfer of ownership to/from GDB/target
5021 remote_terminal_inferior (struct target_ops *self)
5023 if (!target_async_permitted)
5024 /* Nothing to do. */
5027 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5028 idempotent. The event-loop GDB talking to an asynchronous target
5029 with a synchronous command calls this function from both
5030 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5031 transfer the terminal to the target when it shouldn't this guard
5033 if (!remote_async_terminal_ours_p)
5035 delete_file_handler (input_fd);
5036 remote_async_terminal_ours_p = 0;
5037 async_initialize_sigint_signal_handler ();
5038 /* NOTE: At this point we could also register our selves as the
5039 recipient of all input. Any characters typed could then be
5040 passed on down to the target. */
5044 remote_terminal_ours (struct target_ops *self)
5046 if (!target_async_permitted)
5047 /* Nothing to do. */
5050 /* See FIXME in remote_terminal_inferior. */
5051 if (remote_async_terminal_ours_p)
5053 async_cleanup_sigint_signal_handler (NULL);
5054 add_file_handler (input_fd, stdin_event_handler, 0);
5055 remote_async_terminal_ours_p = 1;
5059 remote_console_output (char *msg)
5063 for (p = msg; p[0] && p[1]; p += 2)
5066 char c = fromhex (p[0]) * 16 + fromhex (p[1]);
5070 fputs_unfiltered (tb, gdb_stdtarg);
5072 gdb_flush (gdb_stdtarg);
5075 typedef struct cached_reg
5078 gdb_byte data[MAX_REGISTER_SIZE];
5081 DEF_VEC_O(cached_reg_t);
5083 typedef struct stop_reply
5085 struct notif_event base;
5087 /* The identifier of the thread about this event */
5090 /* The remote state this event is associated with. When the remote
5091 connection, represented by a remote_state object, is closed,
5092 all the associated stop_reply events should be released. */
5093 struct remote_state *rs;
5095 struct target_waitstatus ws;
5097 /* Expedited registers. This makes remote debugging a bit more
5098 efficient for those targets that provide critical registers as
5099 part of their normal status mechanism (as another roundtrip to
5100 fetch them is avoided). */
5101 VEC(cached_reg_t) *regcache;
5103 int stopped_by_watchpoint_p;
5104 CORE_ADDR watch_data_address;
5109 DECLARE_QUEUE_P (stop_reply_p);
5110 DEFINE_QUEUE_P (stop_reply_p);
5111 /* The list of already fetched and acknowledged stop events. This
5112 queue is used for notification Stop, and other notifications
5113 don't need queue for their events, because the notification events
5114 of Stop can't be consumed immediately, so that events should be
5115 queued first, and be consumed by remote_wait_{ns,as} one per
5116 time. Other notifications can consume their events immediately,
5117 so queue is not needed for them. */
5118 static QUEUE (stop_reply_p) *stop_reply_queue;
5121 stop_reply_xfree (struct stop_reply *r)
5123 notif_event_xfree ((struct notif_event *) r);
5127 remote_notif_stop_parse (struct notif_client *self, char *buf,
5128 struct notif_event *event)
5130 remote_parse_stop_reply (buf, (struct stop_reply *) event);
5134 remote_notif_stop_ack (struct notif_client *self, char *buf,
5135 struct notif_event *event)
5137 struct stop_reply *stop_reply = (struct stop_reply *) event;
5140 putpkt ((char *) self->ack_command);
5142 if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE)
5143 /* We got an unknown stop reply. */
5144 error (_("Unknown stop reply"));
5146 push_stop_reply (stop_reply);
5150 remote_notif_stop_can_get_pending_events (struct notif_client *self)
5152 /* We can't get pending events in remote_notif_process for
5153 notification stop, and we have to do this in remote_wait_ns
5154 instead. If we fetch all queued events from stub, remote stub
5155 may exit and we have no chance to process them back in
5157 mark_async_event_handler (remote_async_inferior_event_token);
5162 stop_reply_dtr (struct notif_event *event)
5164 struct stop_reply *r = (struct stop_reply *) event;
5166 VEC_free (cached_reg_t, r->regcache);
5169 static struct notif_event *
5170 remote_notif_stop_alloc_reply (void)
5172 struct notif_event *r
5173 = (struct notif_event *) XNEW (struct stop_reply);
5175 r->dtr = stop_reply_dtr;
5180 /* A client of notification Stop. */
5182 struct notif_client notif_client_stop =
5186 remote_notif_stop_parse,
5187 remote_notif_stop_ack,
5188 remote_notif_stop_can_get_pending_events,
5189 remote_notif_stop_alloc_reply,
5193 /* A parameter to pass data in and out. */
5195 struct queue_iter_param
5198 struct stop_reply *output;
5201 /* Remove stop replies in the queue if its pid is equal to the given
5205 remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q,
5206 QUEUE_ITER (stop_reply_p) *iter,
5210 struct queue_iter_param *param = data;
5211 struct inferior *inf = param->input;
5213 if (ptid_get_pid (event->ptid) == inf->pid)
5215 stop_reply_xfree (event);
5216 QUEUE_remove_elem (stop_reply_p, q, iter);
5222 /* Discard all pending stop replies of inferior INF. */
5225 discard_pending_stop_replies (struct inferior *inf)
5228 struct queue_iter_param param;
5229 struct stop_reply *reply;
5230 struct remote_state *rs = get_remote_state ();
5231 struct remote_notif_state *rns = rs->notif_state;
5233 /* This function can be notified when an inferior exists. When the
5234 target is not remote, the notification state is NULL. */
5235 if (rs->remote_desc == NULL)
5238 reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id];
5240 /* Discard the in-flight notification. */
5241 if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid)
5243 stop_reply_xfree (reply);
5244 rns->pending_event[notif_client_stop.id] = NULL;
5248 param.output = NULL;
5249 /* Discard the stop replies we have already pulled with
5251 QUEUE_iterate (stop_reply_p, stop_reply_queue,
5252 remove_stop_reply_for_inferior, ¶m);
5255 /* If its remote state is equal to the given remote state,
5256 remove EVENT from the stop reply queue. */
5259 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q,
5260 QUEUE_ITER (stop_reply_p) *iter,
5264 struct queue_iter_param *param = data;
5265 struct remote_state *rs = param->input;
5267 if (event->rs == rs)
5269 stop_reply_xfree (event);
5270 QUEUE_remove_elem (stop_reply_p, q, iter);
5276 /* Discard the stop replies for RS in stop_reply_queue. */
5279 discard_pending_stop_replies_in_queue (struct remote_state *rs)
5281 struct queue_iter_param param;
5284 param.output = NULL;
5285 /* Discard the stop replies we have already pulled with
5287 QUEUE_iterate (stop_reply_p, stop_reply_queue,
5288 remove_stop_reply_of_remote_state, ¶m);
5291 /* A parameter to pass data in and out. */
5294 remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q,
5295 QUEUE_ITER (stop_reply_p) *iter,
5299 struct queue_iter_param *param = data;
5300 ptid_t *ptid = param->input;
5302 if (ptid_match (event->ptid, *ptid))
5304 param->output = event;
5305 QUEUE_remove_elem (stop_reply_p, q, iter);
5312 /* Remove the first reply in 'stop_reply_queue' which matches
5315 static struct stop_reply *
5316 remote_notif_remove_queued_reply (ptid_t ptid)
5318 struct queue_iter_param param;
5320 param.input = &ptid;
5321 param.output = NULL;
5323 QUEUE_iterate (stop_reply_p, stop_reply_queue,
5324 remote_notif_remove_once_on_match, ¶m);
5326 fprintf_unfiltered (gdb_stdlog,
5327 "notif: discard queued event: 'Stop' in %s\n",
5328 target_pid_to_str (ptid));
5330 return param.output;
5333 /* Look for a queued stop reply belonging to PTID. If one is found,
5334 remove it from the queue, and return it. Returns NULL if none is
5335 found. If there are still queued events left to process, tell the
5336 event loop to get back to target_wait soon. */
5338 static struct stop_reply *
5339 queued_stop_reply (ptid_t ptid)
5341 struct stop_reply *r = remote_notif_remove_queued_reply (ptid);
5343 if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue))
5344 /* There's still at least an event left. */
5345 mark_async_event_handler (remote_async_inferior_event_token);
5350 /* Push a fully parsed stop reply in the stop reply queue. Since we
5351 know that we now have at least one queued event left to pass to the
5352 core side, tell the event loop to get back to target_wait soon. */
5355 push_stop_reply (struct stop_reply *new_event)
5357 QUEUE_enque (stop_reply_p, stop_reply_queue, new_event);
5360 fprintf_unfiltered (gdb_stdlog,
5361 "notif: push 'Stop' %s to queue %d\n",
5362 target_pid_to_str (new_event->ptid),
5363 QUEUE_length (stop_reply_p,
5366 mark_async_event_handler (remote_async_inferior_event_token);
5370 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q,
5371 QUEUE_ITER (stop_reply_p) *iter,
5372 struct stop_reply *event,
5375 ptid_t *ptid = data;
5377 return !(ptid_equal (*ptid, event->ptid)
5378 && event->ws.kind == TARGET_WAITKIND_STOPPED);
5381 /* Returns true if we have a stop reply for PTID. */
5384 peek_stop_reply (ptid_t ptid)
5386 return !QUEUE_iterate (stop_reply_p, stop_reply_queue,
5387 stop_reply_match_ptid_and_ws, &ptid);
5390 /* Parse the stop reply in BUF. Either the function succeeds, and the
5391 result is stored in EVENT, or throws an error. */
5394 remote_parse_stop_reply (char *buf, struct stop_reply *event)
5396 struct remote_arch_state *rsa = get_remote_arch_state ();
5400 event->ptid = null_ptid;
5401 event->rs = get_remote_state ();
5402 event->ws.kind = TARGET_WAITKIND_IGNORE;
5403 event->ws.value.integer = 0;
5404 event->stopped_by_watchpoint_p = 0;
5405 event->regcache = NULL;
5410 case 'T': /* Status with PC, SP, FP, ... */
5411 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5412 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5414 n... = register number
5415 r... = register contents
5418 p = &buf[3]; /* after Txx */
5426 /* If the packet contains a register number, save it in
5427 pnum and set p1 to point to the character following it.
5428 Otherwise p1 points to p. */
5430 /* If this packet is an awatch packet, don't parse the 'a'
5431 as a register number. */
5433 if (strncmp (p, "awatch", strlen("awatch")) != 0
5434 && strncmp (p, "core", strlen ("core") != 0))
5436 /* Read the ``P'' register number. */
5437 pnum = strtol (p, &p_temp, 16);
5443 if (p1 == p) /* No register number present here. */
5445 p1 = strchr (p, ':');
5447 error (_("Malformed packet(a) (missing colon): %s\n\
5450 if (strncmp (p, "thread", p1 - p) == 0)
5451 event->ptid = read_ptid (++p1, &p);
5452 else if ((strncmp (p, "watch", p1 - p) == 0)
5453 || (strncmp (p, "rwatch", p1 - p) == 0)
5454 || (strncmp (p, "awatch", p1 - p) == 0))
5456 event->stopped_by_watchpoint_p = 1;
5457 p = unpack_varlen_hex (++p1, &addr);
5458 event->watch_data_address = (CORE_ADDR) addr;
5460 else if (strncmp (p, "library", p1 - p) == 0)
5464 while (*p_temp && *p_temp != ';')
5467 event->ws.kind = TARGET_WAITKIND_LOADED;
5470 else if (strncmp (p, "replaylog", p1 - p) == 0)
5472 event->ws.kind = TARGET_WAITKIND_NO_HISTORY;
5473 /* p1 will indicate "begin" or "end", but it makes
5474 no difference for now, so ignore it. */
5475 p_temp = strchr (p1 + 1, ';');
5479 else if (strncmp (p, "core", p1 - p) == 0)
5483 p = unpack_varlen_hex (++p1, &c);
5488 /* Silently skip unknown optional info. */
5489 p_temp = strchr (p1 + 1, ';');
5496 struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum);
5497 cached_reg_t cached_reg;
5502 error (_("Malformed packet(b) (missing colon): %s\n\
5508 error (_("Remote sent bad register number %s: %s\n\
5510 hex_string (pnum), p, buf);
5512 cached_reg.num = reg->regnum;
5514 fieldsize = hex2bin (p, cached_reg.data,
5515 register_size (target_gdbarch (),
5518 if (fieldsize < register_size (target_gdbarch (),
5520 warning (_("Remote reply is too short: %s"), buf);
5522 VEC_safe_push (cached_reg_t, event->regcache, &cached_reg);
5526 error (_("Remote register badly formatted: %s\nhere: %s"),
5531 if (event->ws.kind != TARGET_WAITKIND_IGNORE)
5535 case 'S': /* Old style status, just signal only. */
5539 event->ws.kind = TARGET_WAITKIND_STOPPED;
5540 sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]);
5541 if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST)
5542 event->ws.value.sig = (enum gdb_signal) sig;
5544 event->ws.value.sig = GDB_SIGNAL_UNKNOWN;
5547 case 'W': /* Target exited. */
5554 /* GDB used to accept only 2 hex chars here. Stubs should
5555 only send more if they detect GDB supports multi-process
5557 p = unpack_varlen_hex (&buf[1], &value);
5561 /* The remote process exited. */
5562 event->ws.kind = TARGET_WAITKIND_EXITED;
5563 event->ws.value.integer = value;
5567 /* The remote process exited with a signal. */
5568 event->ws.kind = TARGET_WAITKIND_SIGNALLED;
5569 if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST)
5570 event->ws.value.sig = (enum gdb_signal) value;
5572 event->ws.value.sig = GDB_SIGNAL_UNKNOWN;
5575 /* If no process is specified, assume inferior_ptid. */
5576 pid = ptid_get_pid (inferior_ptid);
5585 else if (strncmp (p,
5586 "process:", sizeof ("process:") - 1) == 0)
5590 p += sizeof ("process:") - 1;
5591 unpack_varlen_hex (p, &upid);
5595 error (_("unknown stop reply packet: %s"), buf);
5598 error (_("unknown stop reply packet: %s"), buf);
5599 event->ptid = pid_to_ptid (pid);
5604 if (non_stop && ptid_equal (event->ptid, null_ptid))
5605 error (_("No process or thread specified in stop reply: %s"), buf);
5608 /* When the stub wants to tell GDB about a new notification reply, it
5609 sends a notification (%Stop, for example). Those can come it at
5610 any time, hence, we have to make sure that any pending
5611 putpkt/getpkt sequence we're making is finished, before querying
5612 the stub for more events with the corresponding ack command
5613 (vStopped, for example). E.g., if we started a vStopped sequence
5614 immediately upon receiving the notification, something like this
5622 1.6) <-- (registers reply to step #1.3)
5624 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5627 To solve this, whenever we parse a %Stop notification successfully,
5628 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5629 doing whatever we were doing:
5635 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5636 2.5) <-- (registers reply to step #2.3)
5638 Eventualy after step #2.5, we return to the event loop, which
5639 notices there's an event on the
5640 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5641 associated callback --- the function below. At this point, we're
5642 always safe to start a vStopped sequence. :
5645 2.7) <-- T05 thread:2
5651 remote_notif_get_pending_events (struct notif_client *nc)
5653 struct remote_state *rs = get_remote_state ();
5655 if (rs->notif_state->pending_event[nc->id] != NULL)
5658 fprintf_unfiltered (gdb_stdlog,
5659 "notif: process: '%s' ack pending event\n",
5663 nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]);
5664 rs->notif_state->pending_event[nc->id] = NULL;
5668 getpkt (&rs->buf, &rs->buf_size, 0);
5669 if (strcmp (rs->buf, "OK") == 0)
5672 remote_notif_ack (nc, rs->buf);
5678 fprintf_unfiltered (gdb_stdlog,
5679 "notif: process: '%s' no pending reply\n",
5684 /* Called when it is decided that STOP_REPLY holds the info of the
5685 event that is to be returned to the core. This function always
5686 destroys STOP_REPLY. */
5689 process_stop_reply (struct stop_reply *stop_reply,
5690 struct target_waitstatus *status)
5694 *status = stop_reply->ws;
5695 ptid = stop_reply->ptid;
5697 /* If no thread/process was reported by the stub, assume the current
5699 if (ptid_equal (ptid, null_ptid))
5700 ptid = inferior_ptid;
5702 if (status->kind != TARGET_WAITKIND_EXITED
5703 && status->kind != TARGET_WAITKIND_SIGNALLED)
5705 struct remote_state *rs = get_remote_state ();
5707 /* Expedited registers. */
5708 if (stop_reply->regcache)
5710 struct regcache *regcache
5711 = get_thread_arch_regcache (ptid, target_gdbarch ());
5716 VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg);
5718 regcache_raw_supply (regcache, reg->num, reg->data);
5719 VEC_free (cached_reg_t, stop_reply->regcache);
5722 rs->remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p;
5723 rs->remote_watch_data_address = stop_reply->watch_data_address;
5725 remote_notice_new_inferior (ptid, 0);
5726 demand_private_info (ptid)->core = stop_reply->core;
5729 stop_reply_xfree (stop_reply);
5733 /* The non-stop mode version of target_wait. */
5736 remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options)
5738 struct remote_state *rs = get_remote_state ();
5739 struct stop_reply *stop_reply;
5743 /* If in non-stop mode, get out of getpkt even if a
5744 notification is received. */
5746 ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
5747 0 /* forever */, &is_notif);
5750 if (ret != -1 && !is_notif)
5753 case 'E': /* Error of some sort. */
5754 /* We're out of sync with the target now. Did it continue
5755 or not? We can't tell which thread it was in non-stop,
5756 so just ignore this. */
5757 warning (_("Remote failure reply: %s"), rs->buf);
5759 case 'O': /* Console output. */
5760 remote_console_output (rs->buf + 1);
5763 warning (_("Invalid remote reply: %s"), rs->buf);
5767 /* Acknowledge a pending stop reply that may have arrived in the
5769 if (rs->notif_state->pending_event[notif_client_stop.id] != NULL)
5770 remote_notif_get_pending_events (¬if_client_stop);
5772 /* If indeed we noticed a stop reply, we're done. */
5773 stop_reply = queued_stop_reply (ptid);
5774 if (stop_reply != NULL)
5775 return process_stop_reply (stop_reply, status);
5777 /* Still no event. If we're just polling for an event, then
5778 return to the event loop. */
5779 if (options & TARGET_WNOHANG)
5781 status->kind = TARGET_WAITKIND_IGNORE;
5782 return minus_one_ptid;
5785 /* Otherwise do a blocking wait. */
5786 ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
5787 1 /* forever */, &is_notif);
5791 /* Wait until the remote machine stops, then return, storing status in
5792 STATUS just as `wait' would. */
5795 remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options)
5797 struct remote_state *rs = get_remote_state ();
5798 ptid_t event_ptid = null_ptid;
5800 struct stop_reply *stop_reply;
5804 status->kind = TARGET_WAITKIND_IGNORE;
5805 status->value.integer = 0;
5807 stop_reply = queued_stop_reply (ptid);
5808 if (stop_reply != NULL)
5809 return process_stop_reply (stop_reply, status);
5811 if (rs->cached_wait_status)
5812 /* Use the cached wait status, but only once. */
5813 rs->cached_wait_status = 0;
5819 if (!target_is_async_p ())
5821 ofunc = signal (SIGINT, sync_remote_interrupt);
5822 /* If the user hit C-c before this packet, or between packets,
5823 pretend that it was hit right here. */
5824 if (check_quit_flag ())
5827 sync_remote_interrupt (SIGINT);
5831 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5832 _never_ wait for ever -> test on target_is_async_p().
5833 However, before we do that we need to ensure that the caller
5834 knows how to take the target into/out of async mode. */
5835 ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
5836 wait_forever_enabled_p, &is_notif);
5838 if (!target_is_async_p ())
5839 signal (SIGINT, ofunc);
5841 /* GDB gets a notification. Return to core as this event is
5843 if (ret != -1 && is_notif)
5844 return minus_one_ptid;
5849 rs->remote_stopped_by_watchpoint_p = 0;
5851 /* We got something. */
5852 rs->waiting_for_stop_reply = 0;
5854 /* Assume that the target has acknowledged Ctrl-C unless we receive
5855 an 'F' or 'O' packet. */
5856 if (buf[0] != 'F' && buf[0] != 'O')
5857 rs->ctrlc_pending_p = 0;
5861 case 'E': /* Error of some sort. */
5862 /* We're out of sync with the target now. Did it continue or
5863 not? Not is more likely, so report a stop. */
5864 warning (_("Remote failure reply: %s"), buf);
5865 status->kind = TARGET_WAITKIND_STOPPED;
5866 status->value.sig = GDB_SIGNAL_0;
5868 case 'F': /* File-I/O request. */
5869 remote_fileio_request (buf, rs->ctrlc_pending_p);
5870 rs->ctrlc_pending_p = 0;
5872 case 'T': case 'S': case 'X': case 'W':
5874 struct stop_reply *stop_reply
5875 = (struct stop_reply *) remote_notif_parse (¬if_client_stop,
5878 event_ptid = process_stop_reply (stop_reply, status);
5881 case 'O': /* Console output. */
5882 remote_console_output (buf + 1);
5884 /* The target didn't really stop; keep waiting. */
5885 rs->waiting_for_stop_reply = 1;
5889 if (rs->last_sent_signal != GDB_SIGNAL_0)
5891 /* Zero length reply means that we tried 'S' or 'C' and the
5892 remote system doesn't support it. */
5893 target_terminal_ours_for_output ();
5895 ("Can't send signals to this remote system. %s not sent.\n",
5896 gdb_signal_to_name (rs->last_sent_signal));
5897 rs->last_sent_signal = GDB_SIGNAL_0;
5898 target_terminal_inferior ();
5900 strcpy ((char *) buf, rs->last_sent_step ? "s" : "c");
5901 putpkt ((char *) buf);
5903 /* We just told the target to resume, so a stop reply is in
5905 rs->waiting_for_stop_reply = 1;
5908 /* else fallthrough */
5910 warning (_("Invalid remote reply: %s"), buf);
5912 rs->waiting_for_stop_reply = 1;
5916 if (status->kind == TARGET_WAITKIND_IGNORE)
5918 /* Nothing interesting happened. If we're doing a non-blocking
5919 poll, we're done. Otherwise, go back to waiting. */
5920 if (options & TARGET_WNOHANG)
5921 return minus_one_ptid;
5925 else if (status->kind != TARGET_WAITKIND_EXITED
5926 && status->kind != TARGET_WAITKIND_SIGNALLED)
5928 if (!ptid_equal (event_ptid, null_ptid))
5929 record_currthread (rs, event_ptid);
5931 event_ptid = inferior_ptid;
5934 /* A process exit. Invalidate our notion of current thread. */
5935 record_currthread (rs, minus_one_ptid);
5940 /* Wait until the remote machine stops, then return, storing status in
5941 STATUS just as `wait' would. */
5944 remote_wait (struct target_ops *ops,
5945 ptid_t ptid, struct target_waitstatus *status, int options)
5950 event_ptid = remote_wait_ns (ptid, status, options);
5952 event_ptid = remote_wait_as (ptid, status, options);
5954 if (target_can_async_p ())
5956 /* If there are are events left in the queue tell the event loop
5958 if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue))
5959 mark_async_event_handler (remote_async_inferior_event_token);
5965 /* Fetch a single register using a 'p' packet. */
5968 fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg)
5970 struct remote_state *rs = get_remote_state ();
5972 char regp[MAX_REGISTER_SIZE];
5975 if (packet_support (PACKET_p) == PACKET_DISABLE)
5978 if (reg->pnum == -1)
5983 p += hexnumstr (p, reg->pnum);
5986 getpkt (&rs->buf, &rs->buf_size, 0);
5990 switch (packet_ok (buf, &remote_protocol_packets[PACKET_p]))
5994 case PACKET_UNKNOWN:
5997 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5998 gdbarch_register_name (get_regcache_arch (regcache),
6003 /* If this register is unfetchable, tell the regcache. */
6006 regcache_raw_supply (regcache, reg->regnum, NULL);
6010 /* Otherwise, parse and supply the value. */
6016 error (_("fetch_register_using_p: early buf termination"));
6018 regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]);
6021 regcache_raw_supply (regcache, reg->regnum, regp);
6025 /* Fetch the registers included in the target's 'g' packet. */
6028 send_g_packet (void)
6030 struct remote_state *rs = get_remote_state ();
6033 xsnprintf (rs->buf, get_remote_packet_size (), "g");
6034 remote_send (&rs->buf, &rs->buf_size);
6036 /* We can get out of synch in various cases. If the first character
6037 in the buffer is not a hex character, assume that has happened
6038 and try to fetch another packet to read. */
6039 while ((rs->buf[0] < '0' || rs->buf[0] > '9')
6040 && (rs->buf[0] < 'A' || rs->buf[0] > 'F')
6041 && (rs->buf[0] < 'a' || rs->buf[0] > 'f')
6042 && rs->buf[0] != 'x') /* New: unavailable register value. */
6045 fprintf_unfiltered (gdb_stdlog,
6046 "Bad register packet; fetching a new packet\n");
6047 getpkt (&rs->buf, &rs->buf_size, 0);
6050 buf_len = strlen (rs->buf);
6052 /* Sanity check the received packet. */
6053 if (buf_len % 2 != 0)
6054 error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf);
6060 process_g_packet (struct regcache *regcache)
6062 struct gdbarch *gdbarch = get_regcache_arch (regcache);
6063 struct remote_state *rs = get_remote_state ();
6064 struct remote_arch_state *rsa = get_remote_arch_state ();
6069 buf_len = strlen (rs->buf);
6071 /* Further sanity checks, with knowledge of the architecture. */
6072 if (buf_len > 2 * rsa->sizeof_g_packet)
6073 error (_("Remote 'g' packet reply is too long: %s"), rs->buf);
6075 /* Save the size of the packet sent to us by the target. It is used
6076 as a heuristic when determining the max size of packets that the
6077 target can safely receive. */
6078 if (rsa->actual_register_packet_size == 0)
6079 rsa->actual_register_packet_size = buf_len;
6081 /* If this is smaller than we guessed the 'g' packet would be,
6082 update our records. A 'g' reply that doesn't include a register's
6083 value implies either that the register is not available, or that
6084 the 'p' packet must be used. */
6085 if (buf_len < 2 * rsa->sizeof_g_packet)
6087 rsa->sizeof_g_packet = buf_len / 2;
6089 for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
6091 if (rsa->regs[i].pnum == -1)
6094 if (rsa->regs[i].offset >= rsa->sizeof_g_packet)
6095 rsa->regs[i].in_g_packet = 0;
6097 rsa->regs[i].in_g_packet = 1;
6101 regs = alloca (rsa->sizeof_g_packet);
6103 /* Unimplemented registers read as all bits zero. */
6104 memset (regs, 0, rsa->sizeof_g_packet);
6106 /* Reply describes registers byte by byte, each byte encoded as two
6107 hex characters. Suck them all up, then supply them to the
6108 register cacheing/storage mechanism. */
6111 for (i = 0; i < rsa->sizeof_g_packet; i++)
6113 if (p[0] == 0 || p[1] == 0)
6114 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6115 internal_error (__FILE__, __LINE__,
6116 _("unexpected end of 'g' packet reply"));
6118 if (p[0] == 'x' && p[1] == 'x')
6119 regs[i] = 0; /* 'x' */
6121 regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
6125 for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
6127 struct packet_reg *r = &rsa->regs[i];
6131 if (r->offset * 2 >= strlen (rs->buf))
6132 /* This shouldn't happen - we adjusted in_g_packet above. */
6133 internal_error (__FILE__, __LINE__,
6134 _("unexpected end of 'g' packet reply"));
6135 else if (rs->buf[r->offset * 2] == 'x')
6137 gdb_assert (r->offset * 2 < strlen (rs->buf));
6138 /* The register isn't available, mark it as such (at
6139 the same time setting the value to zero). */
6140 regcache_raw_supply (regcache, r->regnum, NULL);
6143 regcache_raw_supply (regcache, r->regnum,
6150 fetch_registers_using_g (struct regcache *regcache)
6153 process_g_packet (regcache);
6156 /* Make the remote selected traceframe match GDB's selected
6160 set_remote_traceframe (void)
6163 struct remote_state *rs = get_remote_state ();
6165 if (rs->remote_traceframe_number == get_traceframe_number ())
6168 /* Avoid recursion, remote_trace_find calls us again. */
6169 rs->remote_traceframe_number = get_traceframe_number ();
6171 newnum = target_trace_find (tfind_number,
6172 get_traceframe_number (), 0, 0, NULL);
6174 /* Should not happen. If it does, all bets are off. */
6175 if (newnum != get_traceframe_number ())
6176 warning (_("could not set remote traceframe"));
6180 remote_fetch_registers (struct target_ops *ops,
6181 struct regcache *regcache, int regnum)
6183 struct remote_arch_state *rsa = get_remote_arch_state ();
6186 set_remote_traceframe ();
6187 set_general_thread (inferior_ptid);
6191 struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum);
6193 gdb_assert (reg != NULL);
6195 /* If this register might be in the 'g' packet, try that first -
6196 we are likely to read more than one register. If this is the
6197 first 'g' packet, we might be overly optimistic about its
6198 contents, so fall back to 'p'. */
6199 if (reg->in_g_packet)
6201 fetch_registers_using_g (regcache);
6202 if (reg->in_g_packet)
6206 if (fetch_register_using_p (regcache, reg))
6209 /* This register is not available. */
6210 regcache_raw_supply (regcache, reg->regnum, NULL);
6215 fetch_registers_using_g (regcache);
6217 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
6218 if (!rsa->regs[i].in_g_packet)
6219 if (!fetch_register_using_p (regcache, &rsa->regs[i]))
6221 /* This register is not available. */
6222 regcache_raw_supply (regcache, i, NULL);
6226 /* Prepare to store registers. Since we may send them all (using a
6227 'G' request), we have to read out the ones we don't want to change
6231 remote_prepare_to_store (struct target_ops *self, struct regcache *regcache)
6233 struct remote_arch_state *rsa = get_remote_arch_state ();
6235 gdb_byte buf[MAX_REGISTER_SIZE];
6237 /* Make sure the entire registers array is valid. */
6238 switch (packet_support (PACKET_P))
6240 case PACKET_DISABLE:
6241 case PACKET_SUPPORT_UNKNOWN:
6242 /* Make sure all the necessary registers are cached. */
6243 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
6244 if (rsa->regs[i].in_g_packet)
6245 regcache_raw_read (regcache, rsa->regs[i].regnum, buf);
6252 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6253 packet was not recognized. */
6256 store_register_using_P (const struct regcache *regcache,
6257 struct packet_reg *reg)
6259 struct gdbarch *gdbarch = get_regcache_arch (regcache);
6260 struct remote_state *rs = get_remote_state ();
6261 /* Try storing a single register. */
6262 char *buf = rs->buf;
6263 gdb_byte regp[MAX_REGISTER_SIZE];
6266 if (packet_support (PACKET_P) == PACKET_DISABLE)
6269 if (reg->pnum == -1)
6272 xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0));
6273 p = buf + strlen (buf);
6274 regcache_raw_collect (regcache, reg->regnum, regp);
6275 bin2hex (regp, p, register_size (gdbarch, reg->regnum));
6277 getpkt (&rs->buf, &rs->buf_size, 0);
6279 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P]))
6284 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6285 gdbarch_register_name (gdbarch, reg->regnum), rs->buf);
6286 case PACKET_UNKNOWN:
6289 internal_error (__FILE__, __LINE__, _("Bad result from packet_ok"));
6293 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6294 contents of the register cache buffer. FIXME: ignores errors. */
6297 store_registers_using_G (const struct regcache *regcache)
6299 struct remote_state *rs = get_remote_state ();
6300 struct remote_arch_state *rsa = get_remote_arch_state ();
6304 /* Extract all the registers in the regcache copying them into a
6309 regs = alloca (rsa->sizeof_g_packet);
6310 memset (regs, 0, rsa->sizeof_g_packet);
6311 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
6313 struct packet_reg *r = &rsa->regs[i];
6316 regcache_raw_collect (regcache, r->regnum, regs + r->offset);
6320 /* Command describes registers byte by byte,
6321 each byte encoded as two hex characters. */
6324 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6326 bin2hex (regs, p, rsa->sizeof_g_packet);
6328 getpkt (&rs->buf, &rs->buf_size, 0);
6329 if (packet_check_result (rs->buf) == PACKET_ERROR)
6330 error (_("Could not write registers; remote failure reply '%s'"),
6334 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6335 of the register cache buffer. FIXME: ignores errors. */
6338 remote_store_registers (struct target_ops *ops,
6339 struct regcache *regcache, int regnum)
6341 struct remote_arch_state *rsa = get_remote_arch_state ();
6344 set_remote_traceframe ();
6345 set_general_thread (inferior_ptid);
6349 struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum);
6351 gdb_assert (reg != NULL);
6353 /* Always prefer to store registers using the 'P' packet if
6354 possible; we often change only a small number of registers.
6355 Sometimes we change a larger number; we'd need help from a
6356 higher layer to know to use 'G'. */
6357 if (store_register_using_P (regcache, reg))
6360 /* For now, don't complain if we have no way to write the
6361 register. GDB loses track of unavailable registers too
6362 easily. Some day, this may be an error. We don't have
6363 any way to read the register, either... */
6364 if (!reg->in_g_packet)
6367 store_registers_using_G (regcache);
6371 store_registers_using_G (regcache);
6373 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
6374 if (!rsa->regs[i].in_g_packet)
6375 if (!store_register_using_P (regcache, &rsa->regs[i]))
6376 /* See above for why we do not issue an error here. */
6381 /* Return the number of hex digits in num. */
6384 hexnumlen (ULONGEST num)
6388 for (i = 0; num != 0; i++)
6394 /* Set BUF to the minimum number of hex digits representing NUM. */
6397 hexnumstr (char *buf, ULONGEST num)
6399 int len = hexnumlen (num);
6401 return hexnumnstr (buf, num, len);
6405 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6408 hexnumnstr (char *buf, ULONGEST num, int width)
6414 for (i = width - 1; i >= 0; i--)
6416 buf[i] = "0123456789abcdef"[(num & 0xf)];
6423 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6426 remote_address_masked (CORE_ADDR addr)
6428 unsigned int address_size = remote_address_size;
6430 /* If "remoteaddresssize" was not set, default to target address size. */
6432 address_size = gdbarch_addr_bit (target_gdbarch ());
6434 if (address_size > 0
6435 && address_size < (sizeof (ULONGEST) * 8))
6437 /* Only create a mask when that mask can safely be constructed
6438 in a ULONGEST variable. */
6441 mask = (mask << address_size) - 1;
6447 /* Determine whether the remote target supports binary downloading.
6448 This is accomplished by sending a no-op memory write of zero length
6449 to the target at the specified address. It does not suffice to send
6450 the whole packet, since many stubs strip the eighth bit and
6451 subsequently compute a wrong checksum, which causes real havoc with
6454 NOTE: This can still lose if the serial line is not eight-bit
6455 clean. In cases like this, the user should clear "remote
6459 check_binary_download (CORE_ADDR addr)
6461 struct remote_state *rs = get_remote_state ();
6463 switch (packet_support (PACKET_X))
6465 case PACKET_DISABLE:
6469 case PACKET_SUPPORT_UNKNOWN:
6475 p += hexnumstr (p, (ULONGEST) addr);
6477 p += hexnumstr (p, (ULONGEST) 0);
6481 putpkt_binary (rs->buf, (int) (p - rs->buf));
6482 getpkt (&rs->buf, &rs->buf_size, 0);
6484 if (rs->buf[0] == '\0')
6487 fprintf_unfiltered (gdb_stdlog,
6488 "binary downloading NOT "
6489 "supported by target\n");
6490 remote_protocol_packets[PACKET_X].support = PACKET_DISABLE;
6495 fprintf_unfiltered (gdb_stdlog,
6496 "binary downloading supported by target\n");
6497 remote_protocol_packets[PACKET_X].support = PACKET_ENABLE;
6504 /* Write memory data directly to the remote machine.
6505 This does not inform the data cache; the data cache uses this.
6506 HEADER is the starting part of the packet.
6507 MEMADDR is the address in the remote memory space.
6508 MYADDR is the address of the buffer in our space.
6509 LEN is the number of bytes.
6510 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6511 should send data as binary ('X'), or hex-encoded ('M').
6513 The function creates packet of the form
6514 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6516 where encoding of <DATA> is termined by PACKET_FORMAT.
6518 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6521 Return the transferred status, error or OK (an
6522 'enum target_xfer_status' value). Save the number of bytes
6523 transferred in *XFERED_LEN. Only transfer a single packet. */
6525 static enum target_xfer_status
6526 remote_write_bytes_aux (const char *header, CORE_ADDR memaddr,
6527 const gdb_byte *myaddr, ULONGEST len,
6528 ULONGEST *xfered_len, char packet_format,
6531 struct remote_state *rs = get_remote_state ();
6541 if (packet_format != 'X' && packet_format != 'M')
6542 internal_error (__FILE__, __LINE__,
6543 _("remote_write_bytes_aux: bad packet format"));
6546 return TARGET_XFER_EOF;
6548 payload_size = get_memory_write_packet_size ();
6550 /* The packet buffer will be large enough for the payload;
6551 get_memory_packet_size ensures this. */
6554 /* Compute the size of the actual payload by subtracting out the
6555 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6557 payload_size -= strlen ("$,:#NN");
6559 /* The comma won't be used. */
6561 header_length = strlen (header);
6562 payload_size -= header_length;
6563 payload_size -= hexnumlen (memaddr);
6565 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6567 strcat (rs->buf, header);
6568 p = rs->buf + strlen (header);
6570 /* Compute a best guess of the number of bytes actually transfered. */
6571 if (packet_format == 'X')
6573 /* Best guess at number of bytes that will fit. */
6574 todo = min (len, payload_size);
6576 payload_size -= hexnumlen (todo);
6577 todo = min (todo, payload_size);
6581 /* Num bytes that will fit. */
6582 todo = min (len, payload_size / 2);
6584 payload_size -= hexnumlen (todo);
6585 todo = min (todo, payload_size / 2);
6589 internal_error (__FILE__, __LINE__,
6590 _("minimum packet size too small to write data"));
6592 /* If we already need another packet, then try to align the end
6593 of this packet to a useful boundary. */
6594 if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len)
6595 todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr;
6597 /* Append "<memaddr>". */
6598 memaddr = remote_address_masked (memaddr);
6599 p += hexnumstr (p, (ULONGEST) memaddr);
6606 /* Append <len>. Retain the location/size of <len>. It may need to
6607 be adjusted once the packet body has been created. */
6609 plenlen = hexnumstr (p, (ULONGEST) todo);
6617 /* Append the packet body. */
6618 if (packet_format == 'X')
6620 /* Binary mode. Send target system values byte by byte, in
6621 increasing byte addresses. Only escape certain critical
6623 payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p,
6624 &nr_bytes, payload_size);
6626 /* If not all TODO bytes fit, then we'll need another packet. Make
6627 a second try to keep the end of the packet aligned. Don't do
6628 this if the packet is tiny. */
6629 if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES)
6633 new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1))
6635 if (new_nr_bytes != nr_bytes)
6636 payload_length = remote_escape_output (myaddr, new_nr_bytes,
6637 (gdb_byte *) p, &nr_bytes,
6641 p += payload_length;
6642 if (use_length && nr_bytes < todo)
6644 /* Escape chars have filled up the buffer prematurely,
6645 and we have actually sent fewer bytes than planned.
6646 Fix-up the length field of the packet. Use the same
6647 number of characters as before. */
6648 plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen);
6649 *plen = ':'; /* overwrite \0 from hexnumnstr() */
6654 /* Normal mode: Send target system values byte by byte, in
6655 increasing byte addresses. Each byte is encoded as a two hex
6657 nr_bytes = bin2hex (myaddr, p, todo);
6661 putpkt_binary (rs->buf, (int) (p - rs->buf));
6662 getpkt (&rs->buf, &rs->buf_size, 0);
6664 if (rs->buf[0] == 'E')
6665 return TARGET_XFER_E_IO;
6667 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6668 fewer bytes than we'd planned. */
6669 *xfered_len = (ULONGEST) nr_bytes;
6670 return TARGET_XFER_OK;
6673 /* Write memory data directly to the remote machine.
6674 This does not inform the data cache; the data cache uses this.
6675 MEMADDR is the address in the remote memory space.
6676 MYADDR is the address of the buffer in our space.
6677 LEN is the number of bytes.
6679 Return the transferred status, error or OK (an
6680 'enum target_xfer_status' value). Save the number of bytes
6681 transferred in *XFERED_LEN. Only transfer a single packet. */
6683 static enum target_xfer_status
6684 remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len,
6685 ULONGEST *xfered_len)
6687 char *packet_format = 0;
6689 /* Check whether the target supports binary download. */
6690 check_binary_download (memaddr);
6692 switch (packet_support (PACKET_X))
6695 packet_format = "X";
6697 case PACKET_DISABLE:
6698 packet_format = "M";
6700 case PACKET_SUPPORT_UNKNOWN:
6701 internal_error (__FILE__, __LINE__,
6702 _("remote_write_bytes: bad internal state"));
6704 internal_error (__FILE__, __LINE__, _("bad switch"));
6707 return remote_write_bytes_aux (packet_format,
6708 memaddr, myaddr, len, xfered_len,
6709 packet_format[0], 1);
6712 /* Read memory data directly from the remote machine.
6713 This does not use the data cache; the data cache uses this.
6714 MEMADDR is the address in the remote memory space.
6715 MYADDR is the address of the buffer in our space.
6716 LEN is the number of bytes.
6718 Return the transferred status, error or OK (an
6719 'enum target_xfer_status' value). Save the number of bytes
6720 transferred in *XFERED_LEN. */
6722 static enum target_xfer_status
6723 remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len,
6724 ULONGEST *xfered_len)
6726 struct remote_state *rs = get_remote_state ();
6727 int max_buf_size; /* Max size of packet output buffer. */
6732 max_buf_size = get_memory_read_packet_size ();
6733 /* The packet buffer will be large enough for the payload;
6734 get_memory_packet_size ensures this. */
6736 /* Number if bytes that will fit. */
6737 todo = min (len, max_buf_size / 2);
6739 /* Construct "m"<memaddr>","<len>". */
6740 memaddr = remote_address_masked (memaddr);
6743 p += hexnumstr (p, (ULONGEST) memaddr);
6745 p += hexnumstr (p, (ULONGEST) todo);
6748 getpkt (&rs->buf, &rs->buf_size, 0);
6749 if (rs->buf[0] == 'E'
6750 && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2])
6751 && rs->buf[3] == '\0')
6752 return TARGET_XFER_E_IO;
6753 /* Reply describes memory byte by byte, each byte encoded as two hex
6756 i = hex2bin (p, myaddr, todo);
6757 /* Return what we have. Let higher layers handle partial reads. */
6758 *xfered_len = (ULONGEST) i;
6759 return TARGET_XFER_OK;
6762 /* Using the set of read-only target sections of remote, read live
6765 For interface/parameters/return description see target.h,
6768 static enum target_xfer_status
6769 remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf,
6770 ULONGEST memaddr, ULONGEST len,
6771 ULONGEST *xfered_len)
6773 struct target_section *secp;
6774 struct target_section_table *table;
6776 secp = target_section_by_addr (ops, memaddr);
6778 && (bfd_get_section_flags (secp->the_bfd_section->owner,
6779 secp->the_bfd_section)
6782 struct target_section *p;
6783 ULONGEST memend = memaddr + len;
6785 table = target_get_section_table (ops);
6787 for (p = table->sections; p < table->sections_end; p++)
6789 if (memaddr >= p->addr)
6791 if (memend <= p->endaddr)
6793 /* Entire transfer is within this section. */
6794 return remote_read_bytes_1 (memaddr, readbuf, len,
6797 else if (memaddr >= p->endaddr)
6799 /* This section ends before the transfer starts. */
6804 /* This section overlaps the transfer. Just do half. */
6805 len = p->endaddr - memaddr;
6806 return remote_read_bytes_1 (memaddr, readbuf, len,
6813 return TARGET_XFER_EOF;
6816 /* Similar to remote_read_bytes_1, but it reads from the remote stub
6817 first if the requested memory is unavailable in traceframe.
6818 Otherwise, fall back to remote_read_bytes_1. */
6820 static enum target_xfer_status
6821 remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr,
6822 gdb_byte *myaddr, ULONGEST len, ULONGEST *xfered_len)
6825 return TARGET_XFER_EOF;
6827 if (get_traceframe_number () != -1)
6829 VEC(mem_range_s) *available;
6831 /* If we fail to get the set of available memory, then the
6832 target does not support querying traceframe info, and so we
6833 attempt reading from the traceframe anyway (assuming the
6834 target implements the old QTro packet then). */
6835 if (traceframe_available_memory (&available, memaddr, len))
6837 struct cleanup *old_chain;
6839 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
6841 if (VEC_empty (mem_range_s, available)
6842 || VEC_index (mem_range_s, available, 0)->start != memaddr)
6844 enum target_xfer_status res;
6846 /* Don't read into the traceframe's available
6848 if (!VEC_empty (mem_range_s, available))
6850 LONGEST oldlen = len;
6852 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
6853 gdb_assert (len <= oldlen);
6856 do_cleanups (old_chain);
6858 /* This goes through the topmost target again. */
6859 res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr,
6861 if (res == TARGET_XFER_OK)
6862 return TARGET_XFER_OK;
6865 /* No use trying further, we know some memory starting
6866 at MEMADDR isn't available. */
6868 return TARGET_XFER_UNAVAILABLE;
6872 /* Don't try to read more than how much is available, in
6873 case the target implements the deprecated QTro packet to
6874 cater for older GDBs (the target's knowledge of read-only
6875 sections may be outdated by now). */
6876 len = VEC_index (mem_range_s, available, 0)->length;
6878 do_cleanups (old_chain);
6882 return remote_read_bytes_1 (memaddr, myaddr, len, xfered_len);
6887 /* Sends a packet with content determined by the printf format string
6888 FORMAT and the remaining arguments, then gets the reply. Returns
6889 whether the packet was a success, a failure, or unknown. */
6891 static enum packet_result
6892 remote_send_printf (const char *format, ...)
6894 struct remote_state *rs = get_remote_state ();
6895 int max_size = get_remote_packet_size ();
6898 va_start (ap, format);
6901 if (vsnprintf (rs->buf, max_size, format, ap) >= max_size)
6902 internal_error (__FILE__, __LINE__, _("Too long remote packet."));
6904 if (putpkt (rs->buf) < 0)
6905 error (_("Communication problem with target."));
6908 getpkt (&rs->buf, &rs->buf_size, 0);
6910 return packet_check_result (rs->buf);
6914 restore_remote_timeout (void *p)
6916 int value = *(int *)p;
6918 remote_timeout = value;
6921 /* Flash writing can take quite some time. We'll set
6922 effectively infinite timeout for flash operations.
6923 In future, we'll need to decide on a better approach. */
6924 static const int remote_flash_timeout = 1000;
6927 remote_flash_erase (struct target_ops *ops,
6928 ULONGEST address, LONGEST length)
6930 int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8;
6931 int saved_remote_timeout = remote_timeout;
6932 enum packet_result ret;
6933 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
6934 &saved_remote_timeout);
6936 remote_timeout = remote_flash_timeout;
6938 ret = remote_send_printf ("vFlashErase:%s,%s",
6939 phex (address, addr_size),
6943 case PACKET_UNKNOWN:
6944 error (_("Remote target does not support flash erase"));
6946 error (_("Error erasing flash with vFlashErase packet"));
6951 do_cleanups (back_to);
6954 static enum target_xfer_status
6955 remote_flash_write (struct target_ops *ops, ULONGEST address,
6956 ULONGEST length, ULONGEST *xfered_len,
6957 const gdb_byte *data)
6959 int saved_remote_timeout = remote_timeout;
6960 enum target_xfer_status ret;
6961 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
6962 &saved_remote_timeout);
6964 remote_timeout = remote_flash_timeout;
6965 ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length,
6967 do_cleanups (back_to);
6973 remote_flash_done (struct target_ops *ops)
6975 int saved_remote_timeout = remote_timeout;
6977 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
6978 &saved_remote_timeout);
6980 remote_timeout = remote_flash_timeout;
6981 ret = remote_send_printf ("vFlashDone");
6982 do_cleanups (back_to);
6986 case PACKET_UNKNOWN:
6987 error (_("Remote target does not support vFlashDone"));
6989 error (_("Error finishing flash operation"));
6996 remote_files_info (struct target_ops *ignore)
6998 puts_filtered ("Debugging a target over a serial line.\n");
7001 /* Stuff for dealing with the packets which are part of this protocol.
7002 See comment at top of file for details. */
7004 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7005 error to higher layers. Called when a serial error is detected.
7006 The exception message is STRING, followed by a colon and a blank,
7007 the system error message for errno at function entry and final dot
7008 for output compatibility with throw_perror_with_name. */
7011 unpush_and_perror (const char *string)
7013 int saved_errno = errno;
7015 remote_unpush_target ();
7016 throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string,
7017 safe_strerror (saved_errno));
7020 /* Read a single character from the remote end. */
7023 readchar (int timeout)
7026 struct remote_state *rs = get_remote_state ();
7028 ch = serial_readchar (rs->remote_desc, timeout);
7033 switch ((enum serial_rc) ch)
7036 remote_unpush_target ();
7037 throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed"));
7040 unpush_and_perror (_("Remote communication error. "
7041 "Target disconnected."));
7043 case SERIAL_TIMEOUT:
7049 /* Wrapper for serial_write that closes the target and throws if
7053 remote_serial_write (const char *str, int len)
7055 struct remote_state *rs = get_remote_state ();
7057 if (serial_write (rs->remote_desc, str, len))
7059 unpush_and_perror (_("Remote communication error. "
7060 "Target disconnected."));
7064 /* Send the command in *BUF to the remote machine, and read the reply
7065 into *BUF. Report an error if we get an error reply. Resize
7066 *BUF using xrealloc if necessary to hold the result, and update
7070 remote_send (char **buf,
7074 getpkt (buf, sizeof_buf, 0);
7076 if ((*buf)[0] == 'E')
7077 error (_("Remote failure reply: %s"), *buf);
7080 /* Return a pointer to an xmalloc'ed string representing an escaped
7081 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7082 etc. The caller is responsible for releasing the returned
7086 escape_buffer (const char *buf, int n)
7088 struct cleanup *old_chain;
7089 struct ui_file *stb;
7092 stb = mem_fileopen ();
7093 old_chain = make_cleanup_ui_file_delete (stb);
7095 fputstrn_unfiltered (buf, n, '\\', stb);
7096 str = ui_file_xstrdup (stb, NULL);
7097 do_cleanups (old_chain);
7101 /* Display a null-terminated packet on stdout, for debugging, using C
7105 print_packet (const char *buf)
7107 puts_filtered ("\"");
7108 fputstr_filtered (buf, '"', gdb_stdout);
7109 puts_filtered ("\"");
7113 putpkt (const char *buf)
7115 return putpkt_binary (buf, strlen (buf));
7118 /* Send a packet to the remote machine, with error checking. The data
7119 of the packet is in BUF. The string in BUF can be at most
7120 get_remote_packet_size () - 5 to account for the $, # and checksum,
7121 and for a possible /0 if we are debugging (remote_debug) and want
7122 to print the sent packet as a string. */
7125 putpkt_binary (const char *buf, int cnt)
7127 struct remote_state *rs = get_remote_state ();
7129 unsigned char csum = 0;
7130 char *buf2 = alloca (cnt + 6);
7137 /* Catch cases like trying to read memory or listing threads while
7138 we're waiting for a stop reply. The remote server wouldn't be
7139 ready to handle this request, so we'd hang and timeout. We don't
7140 have to worry about this in synchronous mode, because in that
7141 case it's not possible to issue a command while the target is
7142 running. This is not a problem in non-stop mode, because in that
7143 case, the stub is always ready to process serial input. */
7144 if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply)
7146 error (_("Cannot execute this command while the target is running.\n"
7147 "Use the \"interrupt\" command to stop the target\n"
7148 "and then try again."));
7151 /* We're sending out a new packet. Make sure we don't look at a
7152 stale cached response. */
7153 rs->cached_wait_status = 0;
7155 /* Copy the packet into buffer BUF2, encapsulating it
7156 and giving it a checksum. */
7161 for (i = 0; i < cnt; i++)
7167 *p++ = tohex ((csum >> 4) & 0xf);
7168 *p++ = tohex (csum & 0xf);
7170 /* Send it over and over until we get a positive ack. */
7174 int started_error_output = 0;
7178 struct cleanup *old_chain;
7182 str = escape_buffer (buf2, p - buf2);
7183 old_chain = make_cleanup (xfree, str);
7184 fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str);
7185 gdb_flush (gdb_stdlog);
7186 do_cleanups (old_chain);
7188 remote_serial_write (buf2, p - buf2);
7190 /* If this is a no acks version of the remote protocol, send the
7191 packet and move on. */
7195 /* Read until either a timeout occurs (-2) or '+' is read.
7196 Handle any notification that arrives in the mean time. */
7199 ch = readchar (remote_timeout);
7207 case SERIAL_TIMEOUT:
7210 if (started_error_output)
7212 putchar_unfiltered ('\n');
7213 started_error_output = 0;
7222 fprintf_unfiltered (gdb_stdlog, "Ack\n");
7226 fprintf_unfiltered (gdb_stdlog, "Nak\n");
7228 case SERIAL_TIMEOUT:
7232 break; /* Retransmit buffer. */
7236 fprintf_unfiltered (gdb_stdlog,
7237 "Packet instead of Ack, ignoring it\n");
7238 /* It's probably an old response sent because an ACK
7239 was lost. Gobble up the packet and ack it so it
7240 doesn't get retransmitted when we resend this
7243 remote_serial_write ("+", 1);
7244 continue; /* Now, go look for +. */
7251 /* If we got a notification, handle it, and go back to looking
7253 /* We've found the start of a notification. Now
7254 collect the data. */
7255 val = read_frame (&rs->buf, &rs->buf_size);
7260 struct cleanup *old_chain;
7263 str = escape_buffer (rs->buf, val);
7264 old_chain = make_cleanup (xfree, str);
7265 fprintf_unfiltered (gdb_stdlog,
7266 " Notification received: %s\n",
7268 do_cleanups (old_chain);
7270 handle_notification (rs->notif_state, rs->buf);
7271 /* We're in sync now, rewait for the ack. */
7278 if (!started_error_output)
7280 started_error_output = 1;
7281 fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
7283 fputc_unfiltered (ch & 0177, gdb_stdlog);
7284 fprintf_unfiltered (gdb_stdlog, "%s", rs->buf);
7293 if (!started_error_output)
7295 started_error_output = 1;
7296 fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
7298 fputc_unfiltered (ch & 0177, gdb_stdlog);
7302 break; /* Here to retransmit. */
7306 /* This is wrong. If doing a long backtrace, the user should be
7307 able to get out next time we call QUIT, without anything as
7308 violent as interrupt_query. If we want to provide a way out of
7309 here without getting to the next QUIT, it should be based on
7310 hitting ^C twice as in remote_wait. */
7321 /* Come here after finding the start of a frame when we expected an
7322 ack. Do our best to discard the rest of this packet. */
7331 c = readchar (remote_timeout);
7334 case SERIAL_TIMEOUT:
7335 /* Nothing we can do. */
7338 /* Discard the two bytes of checksum and stop. */
7339 c = readchar (remote_timeout);
7341 c = readchar (remote_timeout);
7344 case '*': /* Run length encoding. */
7345 /* Discard the repeat count. */
7346 c = readchar (remote_timeout);
7351 /* A regular character. */
7357 /* Come here after finding the start of the frame. Collect the rest
7358 into *BUF, verifying the checksum, length, and handling run-length
7359 compression. NUL terminate the buffer. If there is not enough room,
7360 expand *BUF using xrealloc.
7362 Returns -1 on error, number of characters in buffer (ignoring the
7363 trailing NULL) on success. (could be extended to return one of the
7364 SERIAL status indications). */
7367 read_frame (char **buf_p,
7374 struct remote_state *rs = get_remote_state ();
7381 c = readchar (remote_timeout);
7384 case SERIAL_TIMEOUT:
7386 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog);
7390 fputs_filtered ("Saw new packet start in middle of old one\n",
7392 return -1; /* Start a new packet, count retries. */
7395 unsigned char pktcsum;
7401 check_0 = readchar (remote_timeout);
7403 check_1 = readchar (remote_timeout);
7405 if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT)
7408 fputs_filtered ("Timeout in checksum, retrying\n",
7412 else if (check_0 < 0 || check_1 < 0)
7415 fputs_filtered ("Communication error in checksum\n",
7420 /* Don't recompute the checksum; with no ack packets we
7421 don't have any way to indicate a packet retransmission
7426 pktcsum = (fromhex (check_0) << 4) | fromhex (check_1);
7427 if (csum == pktcsum)
7432 struct cleanup *old_chain;
7435 str = escape_buffer (buf, bc);
7436 old_chain = make_cleanup (xfree, str);
7437 fprintf_unfiltered (gdb_stdlog,
7438 "Bad checksum, sentsum=0x%x, "
7439 "csum=0x%x, buf=%s\n",
7440 pktcsum, csum, str);
7441 do_cleanups (old_chain);
7443 /* Number of characters in buffer ignoring trailing
7447 case '*': /* Run length encoding. */
7452 c = readchar (remote_timeout);
7454 repeat = c - ' ' + 3; /* Compute repeat count. */
7456 /* The character before ``*'' is repeated. */
7458 if (repeat > 0 && repeat <= 255 && bc > 0)
7460 if (bc + repeat - 1 >= *sizeof_buf - 1)
7462 /* Make some more room in the buffer. */
7463 *sizeof_buf += repeat;
7464 *buf_p = xrealloc (*buf_p, *sizeof_buf);
7468 memset (&buf[bc], buf[bc - 1], repeat);
7474 printf_filtered (_("Invalid run length encoding: %s\n"), buf);
7478 if (bc >= *sizeof_buf - 1)
7480 /* Make some more room in the buffer. */
7482 *buf_p = xrealloc (*buf_p, *sizeof_buf);
7493 /* Read a packet from the remote machine, with error checking, and
7494 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7495 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7496 rather than timing out; this is used (in synchronous mode) to wait
7497 for a target that is is executing user code to stop. */
7498 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7499 don't have to change all the calls to getpkt to deal with the
7500 return value, because at the moment I don't know what the right
7501 thing to do it for those. */
7509 timed_out = getpkt_sane (buf, sizeof_buf, forever);
7513 /* Read a packet from the remote machine, with error checking, and
7514 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7515 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7516 rather than timing out; this is used (in synchronous mode) to wait
7517 for a target that is is executing user code to stop. If FOREVER ==
7518 0, this function is allowed to time out gracefully and return an
7519 indication of this to the caller. Otherwise return the number of
7520 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7521 enough reason to return to the caller. *IS_NOTIF is an output
7522 boolean that indicates whether *BUF holds a notification or not
7523 (a regular packet). */
7526 getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever,
7527 int expecting_notif, int *is_notif)
7529 struct remote_state *rs = get_remote_state ();
7535 /* We're reading a new response. Make sure we don't look at a
7536 previously cached response. */
7537 rs->cached_wait_status = 0;
7539 strcpy (*buf, "timeout");
7542 timeout = watchdog > 0 ? watchdog : -1;
7543 else if (expecting_notif)
7544 timeout = 0; /* There should already be a char in the buffer. If
7547 timeout = remote_timeout;
7551 /* Process any number of notifications, and then return when
7555 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7557 for (tries = 1; tries <= MAX_TRIES; tries++)
7559 /* This can loop forever if the remote side sends us
7560 characters continuously, but if it pauses, we'll get
7561 SERIAL_TIMEOUT from readchar because of timeout. Then
7562 we'll count that as a retry.
7564 Note that even when forever is set, we will only wait
7565 forever prior to the start of a packet. After that, we
7566 expect characters to arrive at a brisk pace. They should
7567 show up within remote_timeout intervals. */
7569 c = readchar (timeout);
7570 while (c != SERIAL_TIMEOUT && c != '$' && c != '%');
7572 if (c == SERIAL_TIMEOUT)
7574 if (expecting_notif)
7575 return -1; /* Don't complain, it's normal to not get
7576 anything in this case. */
7578 if (forever) /* Watchdog went off? Kill the target. */
7581 remote_unpush_target ();
7582 throw_error (TARGET_CLOSE_ERROR,
7583 _("Watchdog timeout has expired. "
7584 "Target detached."));
7587 fputs_filtered ("Timed out.\n", gdb_stdlog);
7591 /* We've found the start of a packet or notification.
7592 Now collect the data. */
7593 val = read_frame (buf, sizeof_buf);
7598 remote_serial_write ("-", 1);
7601 if (tries > MAX_TRIES)
7603 /* We have tried hard enough, and just can't receive the
7604 packet/notification. Give up. */
7605 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7607 /* Skip the ack char if we're in no-ack mode. */
7608 if (!rs->noack_mode)
7609 remote_serial_write ("+", 1);
7613 /* If we got an ordinary packet, return that to our caller. */
7618 struct cleanup *old_chain;
7621 str = escape_buffer (*buf, val);
7622 old_chain = make_cleanup (xfree, str);
7623 fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str);
7624 do_cleanups (old_chain);
7627 /* Skip the ack char if we're in no-ack mode. */
7628 if (!rs->noack_mode)
7629 remote_serial_write ("+", 1);
7630 if (is_notif != NULL)
7635 /* If we got a notification, handle it, and go back to looking
7639 gdb_assert (c == '%');
7643 struct cleanup *old_chain;
7646 str = escape_buffer (*buf, val);
7647 old_chain = make_cleanup (xfree, str);
7648 fprintf_unfiltered (gdb_stdlog,
7649 " Notification received: %s\n",
7651 do_cleanups (old_chain);
7653 if (is_notif != NULL)
7656 handle_notification (rs->notif_state, *buf);
7658 /* Notifications require no acknowledgement. */
7660 if (expecting_notif)
7667 getpkt_sane (char **buf, long *sizeof_buf, int forever)
7669 return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL);
7673 getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever,
7676 return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1,
7682 remote_kill (struct target_ops *ops)
7684 volatile struct gdb_exception ex;
7686 /* Catch errors so the user can quit from gdb even when we
7687 aren't on speaking terms with the remote system. */
7688 TRY_CATCH (ex, RETURN_MASK_ERROR)
7694 if (ex.error == TARGET_CLOSE_ERROR)
7696 /* If we got an (EOF) error that caused the target
7697 to go away, then we're done, that's what we wanted.
7698 "k" is susceptible to cause a premature EOF, given
7699 that the remote server isn't actually required to
7700 reply to "k", and it can happen that it doesn't
7701 even get to reply ACK to the "k". */
7705 /* Otherwise, something went wrong. We didn't actually kill
7706 the target. Just propagate the exception, and let the
7707 user or higher layers decide what to do. */
7708 throw_exception (ex);
7711 /* We've killed the remote end, we get to mourn it. Since this is
7712 target remote, single-process, mourning the inferior also
7713 unpushes remote_ops. */
7714 target_mourn_inferior ();
7718 remote_vkill (int pid, struct remote_state *rs)
7720 if (packet_support (PACKET_vKill) == PACKET_DISABLE)
7723 /* Tell the remote target to detach. */
7724 xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid);
7726 getpkt (&rs->buf, &rs->buf_size, 0);
7728 switch (packet_ok (rs->buf,
7729 &remote_protocol_packets[PACKET_vKill]))
7735 case PACKET_UNKNOWN:
7738 internal_error (__FILE__, __LINE__, _("Bad result from packet_ok"));
7743 extended_remote_kill (struct target_ops *ops)
7746 int pid = ptid_get_pid (inferior_ptid);
7747 struct remote_state *rs = get_remote_state ();
7749 res = remote_vkill (pid, rs);
7750 if (res == -1 && !(rs->extended && remote_multi_process_p (rs)))
7752 /* Don't try 'k' on a multi-process aware stub -- it has no way
7753 to specify the pid. */
7757 getpkt (&rs->buf, &rs->buf_size, 0);
7758 if (rs->buf[0] != 'O' || rs->buf[0] != 'K')
7761 /* Don't wait for it to die. I'm not really sure it matters whether
7762 we do or not. For the existing stubs, kill is a noop. */
7768 error (_("Can't kill process"));
7770 target_mourn_inferior ();
7774 remote_mourn (struct target_ops *ops)
7776 remote_mourn_1 (ops);
7779 /* Worker function for remote_mourn. */
7781 remote_mourn_1 (struct target_ops *target)
7783 unpush_target (target);
7785 /* remote_close takes care of doing most of the clean up. */
7786 generic_mourn_inferior ();
7790 extended_remote_mourn_1 (struct target_ops *target)
7792 struct remote_state *rs = get_remote_state ();
7794 /* In case we got here due to an error, but we're going to stay
7796 rs->waiting_for_stop_reply = 0;
7798 /* If the current general thread belonged to the process we just
7799 detached from or has exited, the remote side current general
7800 thread becomes undefined. Considering a case like this:
7802 - We just got here due to a detach.
7803 - The process that we're detaching from happens to immediately
7804 report a global breakpoint being hit in non-stop mode, in the
7805 same thread we had selected before.
7806 - GDB attaches to this process again.
7807 - This event happens to be the next event we handle.
7809 GDB would consider that the current general thread didn't need to
7810 be set on the stub side (with Hg), since for all it knew,
7811 GENERAL_THREAD hadn't changed.
7813 Notice that although in all-stop mode, the remote server always
7814 sets the current thread to the thread reporting the stop event,
7815 that doesn't happen in non-stop mode; in non-stop, the stub *must
7816 not* change the current thread when reporting a breakpoint hit,
7817 due to the decoupling of event reporting and event handling.
7819 To keep things simple, we always invalidate our notion of the
7821 record_currthread (rs, minus_one_ptid);
7823 /* Unlike "target remote", we do not want to unpush the target; then
7824 the next time the user says "run", we won't be connected. */
7826 /* Call common code to mark the inferior as not running. */
7827 generic_mourn_inferior ();
7829 if (!have_inferiors ())
7831 if (!remote_multi_process_p (rs))
7833 /* Check whether the target is running now - some remote stubs
7834 automatically restart after kill. */
7836 getpkt (&rs->buf, &rs->buf_size, 0);
7838 if (rs->buf[0] == 'S' || rs->buf[0] == 'T')
7840 /* Assume that the target has been restarted. Set
7841 inferior_ptid so that bits of core GDB realizes
7842 there's something here, e.g., so that the user can
7843 say "kill" again. */
7844 inferior_ptid = magic_null_ptid;
7851 extended_remote_mourn (struct target_ops *ops)
7853 extended_remote_mourn_1 (ops);
7857 extended_remote_supports_disable_randomization (struct target_ops *self)
7859 return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE;
7863 extended_remote_disable_randomization (int val)
7865 struct remote_state *rs = get_remote_state ();
7868 xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x",
7871 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
7873 error (_("Target does not support QDisableRandomization."));
7874 if (strcmp (reply, "OK") != 0)
7875 error (_("Bogus QDisableRandomization reply from target: %s"), reply);
7879 extended_remote_run (char *args)
7881 struct remote_state *rs = get_remote_state ();
7884 /* If the user has disabled vRun support, or we have detected that
7885 support is not available, do not try it. */
7886 if (packet_support (PACKET_vRun) == PACKET_DISABLE)
7889 strcpy (rs->buf, "vRun;");
7890 len = strlen (rs->buf);
7892 if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ())
7893 error (_("Remote file name too long for run packet"));
7894 len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len,
7895 strlen (remote_exec_file));
7897 gdb_assert (args != NULL);
7900 struct cleanup *back_to;
7904 argv = gdb_buildargv (args);
7905 back_to = make_cleanup_freeargv (argv);
7906 for (i = 0; argv[i] != NULL; i++)
7908 if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ())
7909 error (_("Argument list too long for run packet"));
7910 rs->buf[len++] = ';';
7911 len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len,
7914 do_cleanups (back_to);
7917 rs->buf[len++] = '\0';
7920 getpkt (&rs->buf, &rs->buf_size, 0);
7922 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]))
7925 /* We have a wait response. All is well. */
7927 case PACKET_UNKNOWN:
7930 if (remote_exec_file[0] == '\0')
7931 error (_("Running the default executable on the remote target failed; "
7932 "try \"set remote exec-file\"?"));
7934 error (_("Running \"%s\" on the remote target failed"),
7937 gdb_assert_not_reached (_("bad switch"));
7941 /* In the extended protocol we want to be able to do things like
7942 "run" and have them basically work as expected. So we need
7943 a special create_inferior function. We support changing the
7944 executable file and the command line arguments, but not the
7948 extended_remote_create_inferior (struct target_ops *ops,
7949 char *exec_file, char *args,
7950 char **env, int from_tty)
7954 struct remote_state *rs = get_remote_state ();
7956 /* If running asynchronously, register the target file descriptor
7957 with the event loop. */
7958 if (target_can_async_p ())
7959 target_async (inferior_event_handler, 0);
7961 /* Disable address space randomization if requested (and supported). */
7962 if (extended_remote_supports_disable_randomization (ops))
7963 extended_remote_disable_randomization (disable_randomization);
7965 /* Now restart the remote server. */
7966 run_worked = extended_remote_run (args) != -1;
7969 /* vRun was not supported. Fail if we need it to do what the
7971 if (remote_exec_file[0])
7972 error (_("Remote target does not support \"set remote exec-file\""));
7974 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7976 /* Fall back to "R". */
7977 extended_remote_restart ();
7980 if (!have_inferiors ())
7982 /* Clean up from the last time we ran, before we mark the target
7983 running again. This will mark breakpoints uninserted, and
7984 get_offsets may insert breakpoints. */
7985 init_thread_list ();
7986 init_wait_for_inferior ();
7989 /* vRun's success return is a stop reply. */
7990 stop_reply = run_worked ? rs->buf : NULL;
7991 add_current_inferior_and_thread (stop_reply);
7993 /* Get updated offsets, if the stub uses qOffsets. */
7998 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7999 the list of conditions (in agent expression bytecode format), if any, the
8000 target needs to evaluate. The output is placed into the packet buffer
8001 started from BUF and ended at BUF_END. */
8004 remote_add_target_side_condition (struct gdbarch *gdbarch,
8005 struct bp_target_info *bp_tgt, char *buf,
8008 struct agent_expr *aexpr = NULL;
8011 char *buf_start = buf;
8013 if (VEC_empty (agent_expr_p, bp_tgt->conditions))
8016 buf += strlen (buf);
8017 xsnprintf (buf, buf_end - buf, "%s", ";");
8020 /* Send conditions to the target and free the vector. */
8022 VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr);
8025 xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len);
8026 buf += strlen (buf);
8027 for (i = 0; i < aexpr->len; ++i)
8028 buf = pack_hex_byte (buf, aexpr->buf[i]);
8035 remote_add_target_side_commands (struct gdbarch *gdbarch,
8036 struct bp_target_info *bp_tgt, char *buf)
8038 struct agent_expr *aexpr = NULL;
8041 if (VEC_empty (agent_expr_p, bp_tgt->tcommands))
8044 buf += strlen (buf);
8046 sprintf (buf, ";cmds:%x,", bp_tgt->persist);
8047 buf += strlen (buf);
8049 /* Concatenate all the agent expressions that are commands into the
8052 VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr);
8055 sprintf (buf, "X%x,", aexpr->len);
8056 buf += strlen (buf);
8057 for (i = 0; i < aexpr->len; ++i)
8058 buf = pack_hex_byte (buf, aexpr->buf[i]);
8063 /* Insert a breakpoint. On targets that have software breakpoint
8064 support, we ask the remote target to do the work; on targets
8065 which don't, we insert a traditional memory breakpoint. */
8068 remote_insert_breakpoint (struct target_ops *ops,
8069 struct gdbarch *gdbarch,
8070 struct bp_target_info *bp_tgt)
8072 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8073 If it succeeds, then set the support to PACKET_ENABLE. If it
8074 fails, and the user has explicitly requested the Z support then
8075 report an error, otherwise, mark it disabled and go on. */
8077 if (packet_support (PACKET_Z0) != PACKET_DISABLE)
8079 CORE_ADDR addr = bp_tgt->reqstd_address;
8080 struct remote_state *rs;
8083 struct condition_list *cond = NULL;
8085 /* Make sure the remote is pointing at the right process, if
8087 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8088 set_general_process ();
8090 gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize);
8092 rs = get_remote_state ();
8094 endbuf = rs->buf + get_remote_packet_size ();
8099 addr = (ULONGEST) remote_address_masked (addr);
8100 p += hexnumstr (p, addr);
8101 xsnprintf (p, endbuf - p, ",%d", bpsize);
8103 if (remote_supports_cond_breakpoints (ops))
8104 remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf);
8106 if (remote_can_run_breakpoint_commands (ops))
8107 remote_add_target_side_commands (gdbarch, bp_tgt, p);
8110 getpkt (&rs->buf, &rs->buf_size, 0);
8112 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0]))
8117 bp_tgt->placed_address = addr;
8118 bp_tgt->placed_size = bpsize;
8120 case PACKET_UNKNOWN:
8125 /* If this breakpoint has target-side commands but this stub doesn't
8126 support Z0 packets, throw error. */
8127 if (!VEC_empty (agent_expr_p, bp_tgt->tcommands))
8128 throw_error (NOT_SUPPORTED_ERROR, _("\
8129 Target doesn't support breakpoints that have target side commands."));
8131 return memory_insert_breakpoint (ops, gdbarch, bp_tgt);
8135 remote_remove_breakpoint (struct target_ops *ops,
8136 struct gdbarch *gdbarch,
8137 struct bp_target_info *bp_tgt)
8139 CORE_ADDR addr = bp_tgt->placed_address;
8140 struct remote_state *rs = get_remote_state ();
8142 if (packet_support (PACKET_Z0) != PACKET_DISABLE)
8145 char *endbuf = rs->buf + get_remote_packet_size ();
8147 /* Make sure the remote is pointing at the right process, if
8149 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8150 set_general_process ();
8156 addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address);
8157 p += hexnumstr (p, addr);
8158 xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size);
8161 getpkt (&rs->buf, &rs->buf_size, 0);
8163 return (rs->buf[0] == 'E');
8166 return memory_remove_breakpoint (ops, gdbarch, bp_tgt);
8170 watchpoint_to_Z_packet (int type)
8175 return Z_PACKET_WRITE_WP;
8178 return Z_PACKET_READ_WP;
8181 return Z_PACKET_ACCESS_WP;
8184 internal_error (__FILE__, __LINE__,
8185 _("hw_bp_to_z: bad watchpoint type %d"), type);
8190 remote_insert_watchpoint (struct target_ops *self,
8191 CORE_ADDR addr, int len, int type,
8192 struct expression *cond)
8194 struct remote_state *rs = get_remote_state ();
8195 char *endbuf = rs->buf + get_remote_packet_size ();
8197 enum Z_packet_type packet = watchpoint_to_Z_packet (type);
8199 if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE)
8202 /* Make sure the remote is pointing at the right process, if
8204 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8205 set_general_process ();
8207 xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet);
8208 p = strchr (rs->buf, '\0');
8209 addr = remote_address_masked (addr);
8210 p += hexnumstr (p, (ULONGEST) addr);
8211 xsnprintf (p, endbuf - p, ",%x", len);
8214 getpkt (&rs->buf, &rs->buf_size, 0);
8216 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet]))
8220 case PACKET_UNKNOWN:
8225 internal_error (__FILE__, __LINE__,
8226 _("remote_insert_watchpoint: reached end of function"));
8230 remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr,
8231 CORE_ADDR start, int length)
8233 CORE_ADDR diff = remote_address_masked (addr - start);
8235 return diff < length;
8240 remote_remove_watchpoint (struct target_ops *self,
8241 CORE_ADDR addr, int len, int type,
8242 struct expression *cond)
8244 struct remote_state *rs = get_remote_state ();
8245 char *endbuf = rs->buf + get_remote_packet_size ();
8247 enum Z_packet_type packet = watchpoint_to_Z_packet (type);
8249 if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE)
8252 /* Make sure the remote is pointing at the right process, if
8254 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8255 set_general_process ();
8257 xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet);
8258 p = strchr (rs->buf, '\0');
8259 addr = remote_address_masked (addr);
8260 p += hexnumstr (p, (ULONGEST) addr);
8261 xsnprintf (p, endbuf - p, ",%x", len);
8263 getpkt (&rs->buf, &rs->buf_size, 0);
8265 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet]))
8268 case PACKET_UNKNOWN:
8273 internal_error (__FILE__, __LINE__,
8274 _("remote_remove_watchpoint: reached end of function"));
8278 int remote_hw_watchpoint_limit = -1;
8279 int remote_hw_watchpoint_length_limit = -1;
8280 int remote_hw_breakpoint_limit = -1;
8283 remote_region_ok_for_hw_watchpoint (struct target_ops *self,
8284 CORE_ADDR addr, int len)
8286 if (remote_hw_watchpoint_length_limit == 0)
8288 else if (remote_hw_watchpoint_length_limit < 0)
8290 else if (len <= remote_hw_watchpoint_length_limit)
8297 remote_check_watch_resources (struct target_ops *self,
8298 int type, int cnt, int ot)
8300 if (type == bp_hardware_breakpoint)
8302 if (remote_hw_breakpoint_limit == 0)
8304 else if (remote_hw_breakpoint_limit < 0)
8306 else if (cnt <= remote_hw_breakpoint_limit)
8311 if (remote_hw_watchpoint_limit == 0)
8313 else if (remote_hw_watchpoint_limit < 0)
8317 else if (cnt <= remote_hw_watchpoint_limit)
8324 remote_stopped_by_watchpoint (struct target_ops *ops)
8326 struct remote_state *rs = get_remote_state ();
8328 return rs->remote_stopped_by_watchpoint_p;
8332 remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
8334 struct remote_state *rs = get_remote_state ();
8337 if (remote_stopped_by_watchpoint (target))
8339 *addr_p = rs->remote_watch_data_address;
8348 remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch,
8349 struct bp_target_info *bp_tgt)
8351 CORE_ADDR addr = bp_tgt->reqstd_address;
8352 struct remote_state *rs;
8357 /* The length field should be set to the size of a breakpoint
8358 instruction, even though we aren't inserting one ourselves. */
8360 gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize);
8362 if (packet_support (PACKET_Z1) == PACKET_DISABLE)
8365 /* Make sure the remote is pointing at the right process, if
8367 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8368 set_general_process ();
8370 rs = get_remote_state ();
8372 endbuf = rs->buf + get_remote_packet_size ();
8378 addr = remote_address_masked (addr);
8379 p += hexnumstr (p, (ULONGEST) addr);
8380 xsnprintf (p, endbuf - p, ",%x", bpsize);
8382 if (remote_supports_cond_breakpoints (self))
8383 remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf);
8385 if (remote_can_run_breakpoint_commands (self))
8386 remote_add_target_side_commands (gdbarch, bp_tgt, p);
8389 getpkt (&rs->buf, &rs->buf_size, 0);
8391 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1]))
8394 if (rs->buf[1] == '.')
8396 message = strchr (rs->buf + 2, '.');
8398 error (_("Remote failure reply: %s"), message + 1);
8401 case PACKET_UNKNOWN:
8404 bp_tgt->placed_address = addr;
8405 bp_tgt->placed_size = bpsize;
8408 internal_error (__FILE__, __LINE__,
8409 _("remote_insert_hw_breakpoint: reached end of function"));
8414 remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch,
8415 struct bp_target_info *bp_tgt)
8418 struct remote_state *rs = get_remote_state ();
8420 char *endbuf = rs->buf + get_remote_packet_size ();
8422 if (packet_support (PACKET_Z1) == PACKET_DISABLE)
8425 /* Make sure the remote is pointing at the right process, if
8427 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8428 set_general_process ();
8434 addr = remote_address_masked (bp_tgt->placed_address);
8435 p += hexnumstr (p, (ULONGEST) addr);
8436 xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size);
8439 getpkt (&rs->buf, &rs->buf_size, 0);
8441 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1]))
8444 case PACKET_UNKNOWN:
8449 internal_error (__FILE__, __LINE__,
8450 _("remote_remove_hw_breakpoint: reached end of function"));
8453 /* Verify memory using the "qCRC:" request. */
8456 remote_verify_memory (struct target_ops *ops,
8457 const gdb_byte *data, CORE_ADDR lma, ULONGEST size)
8459 struct remote_state *rs = get_remote_state ();
8460 unsigned long host_crc, target_crc;
8463 /* It doesn't make sense to use qCRC if the remote target is
8464 connected but not running. */
8465 if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE)
8467 enum packet_result result;
8469 /* Make sure the remote is pointing at the right process. */
8470 set_general_process ();
8472 /* FIXME: assumes lma can fit into long. */
8473 xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx",
8474 (long) lma, (long) size);
8477 /* Be clever; compute the host_crc before waiting for target
8479 host_crc = xcrc32 (data, size, 0xffffffff);
8481 getpkt (&rs->buf, &rs->buf_size, 0);
8483 result = packet_ok (rs->buf,
8484 &remote_protocol_packets[PACKET_qCRC]);
8485 if (result == PACKET_ERROR)
8487 else if (result == PACKET_OK)
8489 for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++)
8490 target_crc = target_crc * 16 + fromhex (*tmp);
8492 return (host_crc == target_crc);
8496 return simple_verify_memory (ops, data, lma, size);
8499 /* compare-sections command
8501 With no arguments, compares each loadable section in the exec bfd
8502 with the same memory range on the target, and reports mismatches.
8503 Useful for verifying the image on the target against the exec file. */
8506 compare_sections_command (char *args, int from_tty)
8509 struct cleanup *old_chain;
8511 const char *sectname;
8520 error (_("command cannot be used without an exec file"));
8522 /* Make sure the remote is pointing at the right process. */
8523 set_general_process ();
8525 if (args != NULL && strcmp (args, "-r") == 0)
8531 for (s = exec_bfd->sections; s; s = s->next)
8533 if (!(s->flags & SEC_LOAD))
8534 continue; /* Skip non-loadable section. */
8536 if (read_only && (s->flags & SEC_READONLY) == 0)
8537 continue; /* Skip writeable sections */
8539 size = bfd_get_section_size (s);
8541 continue; /* Skip zero-length section. */
8543 sectname = bfd_get_section_name (exec_bfd, s);
8544 if (args && strcmp (args, sectname) != 0)
8545 continue; /* Not the section selected by user. */
8547 matched = 1; /* Do this section. */
8550 sectdata = xmalloc (size);
8551 old_chain = make_cleanup (xfree, sectdata);
8552 bfd_get_section_contents (exec_bfd, s, sectdata, 0, size);
8554 res = target_verify_memory (sectdata, lma, size);
8557 error (_("target memory fault, section %s, range %s -- %s"), sectname,
8558 paddress (target_gdbarch (), lma),
8559 paddress (target_gdbarch (), lma + size));
8561 printf_filtered ("Section %s, range %s -- %s: ", sectname,
8562 paddress (target_gdbarch (), lma),
8563 paddress (target_gdbarch (), lma + size));
8565 printf_filtered ("matched.\n");
8568 printf_filtered ("MIS-MATCHED!\n");
8572 do_cleanups (old_chain);
8575 warning (_("One or more sections of the target image does not match\n\
8576 the loaded file\n"));
8577 if (args && !matched)
8578 printf_filtered (_("No loaded section named '%s'.\n"), args);
8581 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8582 into remote target. The number of bytes written to the remote
8583 target is returned, or -1 for error. */
8585 static enum target_xfer_status
8586 remote_write_qxfer (struct target_ops *ops, const char *object_name,
8587 const char *annex, const gdb_byte *writebuf,
8588 ULONGEST offset, LONGEST len, ULONGEST *xfered_len,
8589 struct packet_config *packet)
8593 struct remote_state *rs = get_remote_state ();
8594 int max_size = get_memory_write_packet_size ();
8596 if (packet->support == PACKET_DISABLE)
8597 return TARGET_XFER_E_IO;
8599 /* Insert header. */
8600 i = snprintf (rs->buf, max_size,
8601 "qXfer:%s:write:%s:%s:",
8602 object_name, annex ? annex : "",
8603 phex_nz (offset, sizeof offset));
8604 max_size -= (i + 1);
8606 /* Escape as much data as fits into rs->buf. */
8607 buf_len = remote_escape_output
8608 (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size);
8610 if (putpkt_binary (rs->buf, i + buf_len) < 0
8611 || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0
8612 || packet_ok (rs->buf, packet) != PACKET_OK)
8613 return TARGET_XFER_E_IO;
8615 unpack_varlen_hex (rs->buf, &n);
8618 return TARGET_XFER_OK;
8621 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8622 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8623 number of bytes read is returned, or 0 for EOF, or -1 for error.
8624 The number of bytes read may be less than LEN without indicating an
8625 EOF. PACKET is checked and updated to indicate whether the remote
8626 target supports this object. */
8628 static enum target_xfer_status
8629 remote_read_qxfer (struct target_ops *ops, const char *object_name,
8631 gdb_byte *readbuf, ULONGEST offset, LONGEST len,
8632 ULONGEST *xfered_len,
8633 struct packet_config *packet)
8635 struct remote_state *rs = get_remote_state ();
8636 LONGEST i, n, packet_len;
8638 if (packet->support == PACKET_DISABLE)
8639 return TARGET_XFER_E_IO;
8641 /* Check whether we've cached an end-of-object packet that matches
8643 if (rs->finished_object)
8645 if (strcmp (object_name, rs->finished_object) == 0
8646 && strcmp (annex ? annex : "", rs->finished_annex) == 0
8647 && offset == rs->finished_offset)
8648 return TARGET_XFER_EOF;
8651 /* Otherwise, we're now reading something different. Discard
8653 xfree (rs->finished_object);
8654 xfree (rs->finished_annex);
8655 rs->finished_object = NULL;
8656 rs->finished_annex = NULL;
8659 /* Request only enough to fit in a single packet. The actual data
8660 may not, since we don't know how much of it will need to be escaped;
8661 the target is free to respond with slightly less data. We subtract
8662 five to account for the response type and the protocol frame. */
8663 n = min (get_remote_packet_size () - 5, len);
8664 snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8665 object_name, annex ? annex : "",
8666 phex_nz (offset, sizeof offset),
8667 phex_nz (n, sizeof n));
8668 i = putpkt (rs->buf);
8670 return TARGET_XFER_E_IO;
8673 packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0);
8674 if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK)
8675 return TARGET_XFER_E_IO;
8677 if (rs->buf[0] != 'l' && rs->buf[0] != 'm')
8678 error (_("Unknown remote qXfer reply: %s"), rs->buf);
8680 /* 'm' means there is (or at least might be) more data after this
8681 batch. That does not make sense unless there's at least one byte
8682 of data in this reply. */
8683 if (rs->buf[0] == 'm' && packet_len == 1)
8684 error (_("Remote qXfer reply contained no data."));
8686 /* Got some data. */
8687 i = remote_unescape_input ((gdb_byte *) rs->buf + 1,
8688 packet_len - 1, readbuf, n);
8690 /* 'l' is an EOF marker, possibly including a final block of data,
8691 or possibly empty. If we have the final block of a non-empty
8692 object, record this fact to bypass a subsequent partial read. */
8693 if (rs->buf[0] == 'l' && offset + i > 0)
8695 rs->finished_object = xstrdup (object_name);
8696 rs->finished_annex = xstrdup (annex ? annex : "");
8697 rs->finished_offset = offset + i;
8701 return TARGET_XFER_EOF;
8705 return TARGET_XFER_OK;
8709 static enum target_xfer_status
8710 remote_xfer_partial (struct target_ops *ops, enum target_object object,
8711 const char *annex, gdb_byte *readbuf,
8712 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
8713 ULONGEST *xfered_len)
8715 struct remote_state *rs;
8720 set_remote_traceframe ();
8721 set_general_thread (inferior_ptid);
8723 rs = get_remote_state ();
8725 /* Handle memory using the standard memory routines. */
8726 if (object == TARGET_OBJECT_MEMORY)
8728 /* If the remote target is connected but not running, we should
8729 pass this request down to a lower stratum (e.g. the executable
8731 if (!target_has_execution)
8732 return TARGET_XFER_EOF;
8734 if (writebuf != NULL)
8735 return remote_write_bytes (offset, writebuf, len, xfered_len);
8737 return remote_read_bytes (ops, offset, readbuf, len, xfered_len);
8740 /* Handle SPU memory using qxfer packets. */
8741 if (object == TARGET_OBJECT_SPU)
8744 return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len,
8745 xfered_len, &remote_protocol_packets
8746 [PACKET_qXfer_spu_read]);
8748 return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len,
8749 xfered_len, &remote_protocol_packets
8750 [PACKET_qXfer_spu_write]);
8753 /* Handle extra signal info using qxfer packets. */
8754 if (object == TARGET_OBJECT_SIGNAL_INFO)
8757 return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len,
8758 xfered_len, &remote_protocol_packets
8759 [PACKET_qXfer_siginfo_read]);
8761 return remote_write_qxfer (ops, "siginfo", annex,
8762 writebuf, offset, len, xfered_len,
8763 &remote_protocol_packets
8764 [PACKET_qXfer_siginfo_write]);
8767 if (object == TARGET_OBJECT_STATIC_TRACE_DATA)
8770 return remote_read_qxfer (ops, "statictrace", annex,
8771 readbuf, offset, len, xfered_len,
8772 &remote_protocol_packets
8773 [PACKET_qXfer_statictrace_read]);
8775 return TARGET_XFER_E_IO;
8778 /* Only handle flash writes. */
8779 if (writebuf != NULL)
8785 case TARGET_OBJECT_FLASH:
8786 return remote_flash_write (ops, offset, len, xfered_len,
8790 return TARGET_XFER_E_IO;
8794 /* Map pre-existing objects onto letters. DO NOT do this for new
8795 objects!!! Instead specify new query packets. */
8798 case TARGET_OBJECT_AVR:
8802 case TARGET_OBJECT_AUXV:
8803 gdb_assert (annex == NULL);
8804 return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len,
8806 &remote_protocol_packets[PACKET_qXfer_auxv]);
8808 case TARGET_OBJECT_AVAILABLE_FEATURES:
8809 return remote_read_qxfer
8810 (ops, "features", annex, readbuf, offset, len, xfered_len,
8811 &remote_protocol_packets[PACKET_qXfer_features]);
8813 case TARGET_OBJECT_LIBRARIES:
8814 return remote_read_qxfer
8815 (ops, "libraries", annex, readbuf, offset, len, xfered_len,
8816 &remote_protocol_packets[PACKET_qXfer_libraries]);
8818 case TARGET_OBJECT_LIBRARIES_SVR4:
8819 return remote_read_qxfer
8820 (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len,
8821 &remote_protocol_packets[PACKET_qXfer_libraries_svr4]);
8823 case TARGET_OBJECT_MEMORY_MAP:
8824 gdb_assert (annex == NULL);
8825 return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len,
8827 &remote_protocol_packets[PACKET_qXfer_memory_map]);
8829 case TARGET_OBJECT_OSDATA:
8830 /* Should only get here if we're connected. */
8831 gdb_assert (rs->remote_desc);
8832 return remote_read_qxfer
8833 (ops, "osdata", annex, readbuf, offset, len, xfered_len,
8834 &remote_protocol_packets[PACKET_qXfer_osdata]);
8836 case TARGET_OBJECT_THREADS:
8837 gdb_assert (annex == NULL);
8838 return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len,
8840 &remote_protocol_packets[PACKET_qXfer_threads]);
8842 case TARGET_OBJECT_TRACEFRAME_INFO:
8843 gdb_assert (annex == NULL);
8844 return remote_read_qxfer
8845 (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len,
8846 &remote_protocol_packets[PACKET_qXfer_traceframe_info]);
8848 case TARGET_OBJECT_FDPIC:
8849 return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len,
8851 &remote_protocol_packets[PACKET_qXfer_fdpic]);
8853 case TARGET_OBJECT_OPENVMS_UIB:
8854 return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len,
8856 &remote_protocol_packets[PACKET_qXfer_uib]);
8858 case TARGET_OBJECT_BTRACE:
8859 return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len,
8861 &remote_protocol_packets[PACKET_qXfer_btrace]);
8864 return TARGET_XFER_E_IO;
8867 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8868 large enough let the caller deal with it. */
8869 if (len < get_remote_packet_size ())
8870 return TARGET_XFER_E_IO;
8871 len = get_remote_packet_size ();
8873 /* Except for querying the minimum buffer size, target must be open. */
8874 if (!rs->remote_desc)
8875 error (_("remote query is only available after target open"));
8877 gdb_assert (annex != NULL);
8878 gdb_assert (readbuf != NULL);
8884 /* We used one buffer char for the remote protocol q command and
8885 another for the query type. As the remote protocol encapsulation
8886 uses 4 chars plus one extra in case we are debugging
8887 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8890 while (annex[i] && (i < (get_remote_packet_size () - 8)))
8892 /* Bad caller may have sent forbidden characters. */
8893 gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#');
8898 gdb_assert (annex[i] == '\0');
8900 i = putpkt (rs->buf);
8902 return TARGET_XFER_E_IO;
8904 getpkt (&rs->buf, &rs->buf_size, 0);
8905 strcpy ((char *) readbuf, rs->buf);
8907 *xfered_len = strlen ((char *) readbuf);
8908 return TARGET_XFER_OK;
8912 remote_search_memory (struct target_ops* ops,
8913 CORE_ADDR start_addr, ULONGEST search_space_len,
8914 const gdb_byte *pattern, ULONGEST pattern_len,
8915 CORE_ADDR *found_addrp)
8917 int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8;
8918 struct remote_state *rs = get_remote_state ();
8919 int max_size = get_memory_write_packet_size ();
8920 struct packet_config *packet =
8921 &remote_protocol_packets[PACKET_qSearch_memory];
8922 /* Number of packet bytes used to encode the pattern;
8923 this could be more than PATTERN_LEN due to escape characters. */
8924 int escaped_pattern_len;
8925 /* Amount of pattern that was encodable in the packet. */
8926 int used_pattern_len;
8929 ULONGEST found_addr;
8931 /* Don't go to the target if we don't have to.
8932 This is done before checking packet->support to avoid the possibility that
8933 a success for this edge case means the facility works in general. */
8934 if (pattern_len > search_space_len)
8936 if (pattern_len == 0)
8938 *found_addrp = start_addr;
8942 /* If we already know the packet isn't supported, fall back to the simple
8943 way of searching memory. */
8945 if (packet_config_support (packet) == PACKET_DISABLE)
8947 /* Target doesn't provided special support, fall back and use the
8948 standard support (copy memory and do the search here). */
8949 return simple_search_memory (ops, start_addr, search_space_len,
8950 pattern, pattern_len, found_addrp);
8953 /* Make sure the remote is pointing at the right process. */
8954 set_general_process ();
8956 /* Insert header. */
8957 i = snprintf (rs->buf, max_size,
8958 "qSearch:memory:%s;%s;",
8959 phex_nz (start_addr, addr_size),
8960 phex_nz (search_space_len, sizeof (search_space_len)));
8961 max_size -= (i + 1);
8963 /* Escape as much data as fits into rs->buf. */
8964 escaped_pattern_len =
8965 remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i,
8966 &used_pattern_len, max_size);
8968 /* Bail if the pattern is too large. */
8969 if (used_pattern_len != pattern_len)
8970 error (_("Pattern is too large to transmit to remote target."));
8972 if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0
8973 || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0
8974 || packet_ok (rs->buf, packet) != PACKET_OK)
8976 /* The request may not have worked because the command is not
8977 supported. If so, fall back to the simple way. */
8978 if (packet->support == PACKET_DISABLE)
8980 return simple_search_memory (ops, start_addr, search_space_len,
8981 pattern, pattern_len, found_addrp);
8986 if (rs->buf[0] == '0')
8988 else if (rs->buf[0] == '1')
8991 if (rs->buf[1] != ',')
8992 error (_("Unknown qSearch:memory reply: %s"), rs->buf);
8993 unpack_varlen_hex (rs->buf + 2, &found_addr);
8994 *found_addrp = found_addr;
8997 error (_("Unknown qSearch:memory reply: %s"), rs->buf);
9003 remote_rcmd (struct target_ops *self, const char *command,
9004 struct ui_file *outbuf)
9006 struct remote_state *rs = get_remote_state ();
9009 if (!rs->remote_desc)
9010 error (_("remote rcmd is only available after target open"));
9012 /* Send a NULL command across as an empty command. */
9013 if (command == NULL)
9016 /* The query prefix. */
9017 strcpy (rs->buf, "qRcmd,");
9018 p = strchr (rs->buf, '\0');
9020 if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/)
9021 > get_remote_packet_size ())
9022 error (_("\"monitor\" command ``%s'' is too long."), command);
9024 /* Encode the actual command. */
9025 bin2hex ((const gdb_byte *) command, p, strlen (command));
9027 if (putpkt (rs->buf) < 0)
9028 error (_("Communication problem with target."));
9030 /* get/display the response */
9035 /* XXX - see also remote_get_noisy_reply(). */
9036 QUIT; /* Allow user to bail out with ^C. */
9038 if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1)
9040 /* Timeout. Continue to (try to) read responses.
9041 This is better than stopping with an error, assuming the stub
9042 is still executing the (long) monitor command.
9043 If needed, the user can interrupt gdb using C-c, obtaining
9044 an effect similar to stop on timeout. */
9049 error (_("Target does not support this command."));
9050 if (buf[0] == 'O' && buf[1] != 'K')
9052 remote_console_output (buf + 1); /* 'O' message from stub. */
9055 if (strcmp (buf, "OK") == 0)
9057 if (strlen (buf) == 3 && buf[0] == 'E'
9058 && isdigit (buf[1]) && isdigit (buf[2]))
9060 error (_("Protocol error with Rcmd"));
9062 for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2)
9064 char c = (fromhex (p[0]) << 4) + fromhex (p[1]);
9066 fputc_unfiltered (c, outbuf);
9072 static VEC(mem_region_s) *
9073 remote_memory_map (struct target_ops *ops)
9075 VEC(mem_region_s) *result = NULL;
9076 char *text = target_read_stralloc (¤t_target,
9077 TARGET_OBJECT_MEMORY_MAP, NULL);
9081 struct cleanup *back_to = make_cleanup (xfree, text);
9083 result = parse_memory_map (text);
9084 do_cleanups (back_to);
9091 packet_command (char *args, int from_tty)
9093 struct remote_state *rs = get_remote_state ();
9095 if (!rs->remote_desc)
9096 error (_("command can only be used with remote target"));
9099 error (_("remote-packet command requires packet text as argument"));
9101 puts_filtered ("sending: ");
9102 print_packet (args);
9103 puts_filtered ("\n");
9106 getpkt (&rs->buf, &rs->buf_size, 0);
9107 puts_filtered ("received: ");
9108 print_packet (rs->buf);
9109 puts_filtered ("\n");
9113 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9115 static void display_thread_info (struct gdb_ext_thread_info *info);
9117 static void threadset_test_cmd (char *cmd, int tty);
9119 static void threadalive_test (char *cmd, int tty);
9121 static void threadlist_test_cmd (char *cmd, int tty);
9123 int get_and_display_threadinfo (threadref *ref);
9125 static void threadinfo_test_cmd (char *cmd, int tty);
9127 static int thread_display_step (threadref *ref, void *context);
9129 static void threadlist_update_test_cmd (char *cmd, int tty);
9131 static void init_remote_threadtests (void);
9133 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9136 threadset_test_cmd (char *cmd, int tty)
9138 int sample_thread = SAMPLE_THREAD;
9140 printf_filtered (_("Remote threadset test\n"));
9141 set_general_thread (sample_thread);
9146 threadalive_test (char *cmd, int tty)
9148 int sample_thread = SAMPLE_THREAD;
9149 int pid = ptid_get_pid (inferior_ptid);
9150 ptid_t ptid = ptid_build (pid, sample_thread, 0);
9152 if (remote_thread_alive (ptid))
9153 printf_filtered ("PASS: Thread alive test\n");
9155 printf_filtered ("FAIL: Thread alive test\n");
9158 void output_threadid (char *title, threadref *ref);
9161 output_threadid (char *title, threadref *ref)
9165 pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */
9167 printf_filtered ("%s %s\n", title, (&hexid[0]));
9171 threadlist_test_cmd (char *cmd, int tty)
9174 threadref nextthread;
9175 int done, result_count;
9176 threadref threadlist[3];
9178 printf_filtered ("Remote Threadlist test\n");
9179 if (!remote_get_threadlist (startflag, &nextthread, 3, &done,
9180 &result_count, &threadlist[0]))
9181 printf_filtered ("FAIL: threadlist test\n");
9184 threadref *scan = threadlist;
9185 threadref *limit = scan + result_count;
9187 while (scan < limit)
9188 output_threadid (" thread ", scan++);
9193 display_thread_info (struct gdb_ext_thread_info *info)
9195 output_threadid ("Threadid: ", &info->threadid);
9196 printf_filtered ("Name: %s\n ", info->shortname);
9197 printf_filtered ("State: %s\n", info->display);
9198 printf_filtered ("other: %s\n\n", info->more_display);
9202 get_and_display_threadinfo (threadref *ref)
9206 struct gdb_ext_thread_info threadinfo;
9208 set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
9209 | TAG_MOREDISPLAY | TAG_DISPLAY;
9210 if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo)))
9211 display_thread_info (&threadinfo);
9216 threadinfo_test_cmd (char *cmd, int tty)
9218 int athread = SAMPLE_THREAD;
9222 int_to_threadref (&thread, athread);
9223 printf_filtered ("Remote Threadinfo test\n");
9224 if (!get_and_display_threadinfo (&thread))
9225 printf_filtered ("FAIL cannot get thread info\n");
9229 thread_display_step (threadref *ref, void *context)
9231 /* output_threadid(" threadstep ",ref); *//* simple test */
9232 return get_and_display_threadinfo (ref);
9236 threadlist_update_test_cmd (char *cmd, int tty)
9238 printf_filtered ("Remote Threadlist update test\n");
9239 remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS);
9243 init_remote_threadtests (void)
9245 add_com ("tlist", class_obscure, threadlist_test_cmd,
9246 _("Fetch and print the remote list of "
9247 "thread identifiers, one pkt only"));
9248 add_com ("tinfo", class_obscure, threadinfo_test_cmd,
9249 _("Fetch and display info about one thread"));
9250 add_com ("tset", class_obscure, threadset_test_cmd,
9251 _("Test setting to a different thread"));
9252 add_com ("tupd", class_obscure, threadlist_update_test_cmd,
9253 _("Iterate through updating all remote thread info"));
9254 add_com ("talive", class_obscure, threadalive_test,
9255 _(" Remote thread alive test "));
9260 /* Convert a thread ID to a string. Returns the string in a static
9264 remote_pid_to_str (struct target_ops *ops, ptid_t ptid)
9266 static char buf[64];
9267 struct remote_state *rs = get_remote_state ();
9269 if (ptid_equal (ptid, null_ptid))
9270 return normal_pid_to_str (ptid);
9271 else if (ptid_is_pid (ptid))
9273 /* Printing an inferior target id. */
9275 /* When multi-process extensions are off, there's no way in the
9276 remote protocol to know the remote process id, if there's any
9277 at all. There's one exception --- when we're connected with
9278 target extended-remote, and we manually attached to a process
9279 with "attach PID". We don't record anywhere a flag that
9280 allows us to distinguish that case from the case of
9281 connecting with extended-remote and the stub already being
9282 attached to a process, and reporting yes to qAttached, hence
9283 no smart special casing here. */
9284 if (!remote_multi_process_p (rs))
9286 xsnprintf (buf, sizeof buf, "Remote target");
9290 return normal_pid_to_str (ptid);
9294 if (ptid_equal (magic_null_ptid, ptid))
9295 xsnprintf (buf, sizeof buf, "Thread <main>");
9296 else if (rs->extended && remote_multi_process_p (rs))
9297 xsnprintf (buf, sizeof buf, "Thread %d.%ld",
9298 ptid_get_pid (ptid), ptid_get_lwp (ptid));
9300 xsnprintf (buf, sizeof buf, "Thread %ld",
9301 ptid_get_lwp (ptid));
9306 /* Get the address of the thread local variable in OBJFILE which is
9307 stored at OFFSET within the thread local storage for thread PTID. */
9310 remote_get_thread_local_address (struct target_ops *ops,
9311 ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset)
9313 if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE)
9315 struct remote_state *rs = get_remote_state ();
9317 char *endp = rs->buf + get_remote_packet_size ();
9318 enum packet_result result;
9320 strcpy (p, "qGetTLSAddr:");
9322 p = write_ptid (p, endp, ptid);
9324 p += hexnumstr (p, offset);
9326 p += hexnumstr (p, lm);
9330 getpkt (&rs->buf, &rs->buf_size, 0);
9331 result = packet_ok (rs->buf,
9332 &remote_protocol_packets[PACKET_qGetTLSAddr]);
9333 if (result == PACKET_OK)
9337 unpack_varlen_hex (rs->buf, &result);
9340 else if (result == PACKET_UNKNOWN)
9341 throw_error (TLS_GENERIC_ERROR,
9342 _("Remote target doesn't support qGetTLSAddr packet"));
9344 throw_error (TLS_GENERIC_ERROR,
9345 _("Remote target failed to process qGetTLSAddr request"));
9348 throw_error (TLS_GENERIC_ERROR,
9349 _("TLS not supported or disabled on this target"));
9354 /* Provide thread local base, i.e. Thread Information Block address.
9355 Returns 1 if ptid is found and thread_local_base is non zero. */
9358 remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr)
9360 if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE)
9362 struct remote_state *rs = get_remote_state ();
9364 char *endp = rs->buf + get_remote_packet_size ();
9365 enum packet_result result;
9367 strcpy (p, "qGetTIBAddr:");
9369 p = write_ptid (p, endp, ptid);
9373 getpkt (&rs->buf, &rs->buf_size, 0);
9374 result = packet_ok (rs->buf,
9375 &remote_protocol_packets[PACKET_qGetTIBAddr]);
9376 if (result == PACKET_OK)
9380 unpack_varlen_hex (rs->buf, &result);
9382 *addr = (CORE_ADDR) result;
9385 else if (result == PACKET_UNKNOWN)
9386 error (_("Remote target doesn't support qGetTIBAddr packet"));
9388 error (_("Remote target failed to process qGetTIBAddr request"));
9391 error (_("qGetTIBAddr not supported or disabled on this target"));
9396 /* Support for inferring a target description based on the current
9397 architecture and the size of a 'g' packet. While the 'g' packet
9398 can have any size (since optional registers can be left off the
9399 end), some sizes are easily recognizable given knowledge of the
9400 approximate architecture. */
9402 struct remote_g_packet_guess
9405 const struct target_desc *tdesc;
9407 typedef struct remote_g_packet_guess remote_g_packet_guess_s;
9408 DEF_VEC_O(remote_g_packet_guess_s);
9410 struct remote_g_packet_data
9412 VEC(remote_g_packet_guess_s) *guesses;
9415 static struct gdbarch_data *remote_g_packet_data_handle;
9418 remote_g_packet_data_init (struct obstack *obstack)
9420 return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data);
9424 register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes,
9425 const struct target_desc *tdesc)
9427 struct remote_g_packet_data *data
9428 = gdbarch_data (gdbarch, remote_g_packet_data_handle);
9429 struct remote_g_packet_guess new_guess, *guess;
9432 gdb_assert (tdesc != NULL);
9435 VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess);
9437 if (guess->bytes == bytes)
9438 internal_error (__FILE__, __LINE__,
9439 _("Duplicate g packet description added for size %d"),
9442 new_guess.bytes = bytes;
9443 new_guess.tdesc = tdesc;
9444 VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess);
9447 /* Return 1 if remote_read_description would do anything on this target
9448 and architecture, 0 otherwise. */
9451 remote_read_description_p (struct target_ops *target)
9453 struct remote_g_packet_data *data
9454 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle);
9456 if (!VEC_empty (remote_g_packet_guess_s, data->guesses))
9462 static const struct target_desc *
9463 remote_read_description (struct target_ops *target)
9465 struct remote_g_packet_data *data
9466 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle);
9468 /* Do not try this during initial connection, when we do not know
9469 whether there is a running but stopped thread. */
9470 if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid))
9471 return target->beneath->to_read_description (target->beneath);
9473 if (!VEC_empty (remote_g_packet_guess_s, data->guesses))
9475 struct remote_g_packet_guess *guess;
9477 int bytes = send_g_packet ();
9480 VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess);
9482 if (guess->bytes == bytes)
9483 return guess->tdesc;
9485 /* We discard the g packet. A minor optimization would be to
9486 hold on to it, and fill the register cache once we have selected
9487 an architecture, but it's too tricky to do safely. */
9490 return target->beneath->to_read_description (target->beneath);
9493 /* Remote file transfer support. This is host-initiated I/O, not
9494 target-initiated; for target-initiated, see remote-fileio.c. */
9496 /* If *LEFT is at least the length of STRING, copy STRING to
9497 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9498 decrease *LEFT. Otherwise raise an error. */
9501 remote_buffer_add_string (char **buffer, int *left, char *string)
9503 int len = strlen (string);
9506 error (_("Packet too long for target."));
9508 memcpy (*buffer, string, len);
9512 /* NUL-terminate the buffer as a convenience, if there is
9518 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9519 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9520 decrease *LEFT. Otherwise raise an error. */
9523 remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes,
9526 if (2 * len > *left)
9527 error (_("Packet too long for target."));
9529 bin2hex (bytes, *buffer, len);
9533 /* NUL-terminate the buffer as a convenience, if there is
9539 /* If *LEFT is large enough, convert VALUE to hex and add it to
9540 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9541 decrease *LEFT. Otherwise raise an error. */
9544 remote_buffer_add_int (char **buffer, int *left, ULONGEST value)
9546 int len = hexnumlen (value);
9549 error (_("Packet too long for target."));
9551 hexnumstr (*buffer, value);
9555 /* NUL-terminate the buffer as a convenience, if there is
9561 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9562 value, *REMOTE_ERRNO to the remote error number or zero if none
9563 was included, and *ATTACHMENT to point to the start of the annex
9564 if any. The length of the packet isn't needed here; there may
9565 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9567 Return 0 if the packet could be parsed, -1 if it could not. If
9568 -1 is returned, the other variables may not be initialized. */
9571 remote_hostio_parse_result (char *buffer, int *retcode,
9572 int *remote_errno, char **attachment)
9579 if (buffer[0] != 'F')
9583 *retcode = strtol (&buffer[1], &p, 16);
9584 if (errno != 0 || p == &buffer[1])
9587 /* Check for ",errno". */
9591 *remote_errno = strtol (p + 1, &p2, 16);
9592 if (errno != 0 || p + 1 == p2)
9597 /* Check for ";attachment". If there is no attachment, the
9598 packet should end here. */
9601 *attachment = p + 1;
9604 else if (*p == '\0')
9610 /* Send a prepared I/O packet to the target and read its response.
9611 The prepared packet is in the global RS->BUF before this function
9612 is called, and the answer is there when we return.
9614 COMMAND_BYTES is the length of the request to send, which may include
9615 binary data. WHICH_PACKET is the packet configuration to check
9616 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9617 is set to the error number and -1 is returned. Otherwise the value
9618 returned by the function is returned.
9620 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9621 attachment is expected; an error will be reported if there's a
9622 mismatch. If one is found, *ATTACHMENT will be set to point into
9623 the packet buffer and *ATTACHMENT_LEN will be set to the
9624 attachment's length. */
9627 remote_hostio_send_command (int command_bytes, int which_packet,
9628 int *remote_errno, char **attachment,
9629 int *attachment_len)
9631 struct remote_state *rs = get_remote_state ();
9632 int ret, bytes_read;
9633 char *attachment_tmp;
9635 if (!rs->remote_desc
9636 || packet_support (which_packet) == PACKET_DISABLE)
9638 *remote_errno = FILEIO_ENOSYS;
9642 putpkt_binary (rs->buf, command_bytes);
9643 bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0);
9645 /* If it timed out, something is wrong. Don't try to parse the
9649 *remote_errno = FILEIO_EINVAL;
9653 switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet]))
9656 *remote_errno = FILEIO_EINVAL;
9658 case PACKET_UNKNOWN:
9659 *remote_errno = FILEIO_ENOSYS;
9665 if (remote_hostio_parse_result (rs->buf, &ret, remote_errno,
9668 *remote_errno = FILEIO_EINVAL;
9672 /* Make sure we saw an attachment if and only if we expected one. */
9673 if ((attachment_tmp == NULL && attachment != NULL)
9674 || (attachment_tmp != NULL && attachment == NULL))
9676 *remote_errno = FILEIO_EINVAL;
9680 /* If an attachment was found, it must point into the packet buffer;
9681 work out how many bytes there were. */
9682 if (attachment_tmp != NULL)
9684 *attachment = attachment_tmp;
9685 *attachment_len = bytes_read - (*attachment - rs->buf);
9691 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9692 remote file descriptor, or -1 if an error occurs (and set
9696 remote_hostio_open (struct target_ops *self,
9697 const char *filename, int flags, int mode,
9700 struct remote_state *rs = get_remote_state ();
9702 int left = get_remote_packet_size () - 1;
9704 remote_buffer_add_string (&p, &left, "vFile:open:");
9706 remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
9708 remote_buffer_add_string (&p, &left, ",");
9710 remote_buffer_add_int (&p, &left, flags);
9711 remote_buffer_add_string (&p, &left, ",");
9713 remote_buffer_add_int (&p, &left, mode);
9715 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open,
9716 remote_errno, NULL, NULL);
9719 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9720 Return the number of bytes written, or -1 if an error occurs (and
9721 set *REMOTE_ERRNO). */
9724 remote_hostio_pwrite (struct target_ops *self,
9725 int fd, const gdb_byte *write_buf, int len,
9726 ULONGEST offset, int *remote_errno)
9728 struct remote_state *rs = get_remote_state ();
9730 int left = get_remote_packet_size ();
9733 remote_buffer_add_string (&p, &left, "vFile:pwrite:");
9735 remote_buffer_add_int (&p, &left, fd);
9736 remote_buffer_add_string (&p, &left, ",");
9738 remote_buffer_add_int (&p, &left, offset);
9739 remote_buffer_add_string (&p, &left, ",");
9741 p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len,
9742 get_remote_packet_size () - (p - rs->buf));
9744 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite,
9745 remote_errno, NULL, NULL);
9748 /* Read up to LEN bytes FD on the remote target into READ_BUF
9749 Return the number of bytes read, or -1 if an error occurs (and
9750 set *REMOTE_ERRNO). */
9753 remote_hostio_pread (struct target_ops *self,
9754 int fd, gdb_byte *read_buf, int len,
9755 ULONGEST offset, int *remote_errno)
9757 struct remote_state *rs = get_remote_state ();
9760 int left = get_remote_packet_size ();
9761 int ret, attachment_len;
9764 remote_buffer_add_string (&p, &left, "vFile:pread:");
9766 remote_buffer_add_int (&p, &left, fd);
9767 remote_buffer_add_string (&p, &left, ",");
9769 remote_buffer_add_int (&p, &left, len);
9770 remote_buffer_add_string (&p, &left, ",");
9772 remote_buffer_add_int (&p, &left, offset);
9774 ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread,
9775 remote_errno, &attachment,
9781 read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len,
9783 if (read_len != ret)
9784 error (_("Read returned %d, but %d bytes."), ret, (int) read_len);
9789 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9790 (and set *REMOTE_ERRNO). */
9793 remote_hostio_close (struct target_ops *self, int fd, int *remote_errno)
9795 struct remote_state *rs = get_remote_state ();
9797 int left = get_remote_packet_size () - 1;
9799 remote_buffer_add_string (&p, &left, "vFile:close:");
9801 remote_buffer_add_int (&p, &left, fd);
9803 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close,
9804 remote_errno, NULL, NULL);
9807 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9808 occurs (and set *REMOTE_ERRNO). */
9811 remote_hostio_unlink (struct target_ops *self,
9812 const char *filename, int *remote_errno)
9814 struct remote_state *rs = get_remote_state ();
9816 int left = get_remote_packet_size () - 1;
9818 remote_buffer_add_string (&p, &left, "vFile:unlink:");
9820 remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
9823 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink,
9824 remote_errno, NULL, NULL);
9827 /* Read value of symbolic link FILENAME on the remote target. Return
9828 a null-terminated string allocated via xmalloc, or NULL if an error
9829 occurs (and set *REMOTE_ERRNO). */
9832 remote_hostio_readlink (struct target_ops *self,
9833 const char *filename, int *remote_errno)
9835 struct remote_state *rs = get_remote_state ();
9838 int left = get_remote_packet_size ();
9839 int len, attachment_len;
9843 remote_buffer_add_string (&p, &left, "vFile:readlink:");
9845 remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
9848 len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink,
9849 remote_errno, &attachment,
9855 ret = xmalloc (len + 1);
9857 read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len,
9858 (gdb_byte *) ret, len);
9859 if (read_len != len)
9860 error (_("Readlink returned %d, but %d bytes."), len, read_len);
9867 remote_fileio_errno_to_host (int errnum)
9891 case FILEIO_ENOTDIR:
9911 case FILEIO_ENAMETOOLONG:
9912 return ENAMETOOLONG;
9918 remote_hostio_error (int errnum)
9920 int host_error = remote_fileio_errno_to_host (errnum);
9922 if (host_error == -1)
9923 error (_("Unknown remote I/O error %d"), errnum);
9925 error (_("Remote I/O error: %s"), safe_strerror (host_error));
9929 remote_hostio_close_cleanup (void *opaque)
9931 int fd = *(int *) opaque;
9934 remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno);
9939 remote_bfd_iovec_open (struct bfd *abfd, void *open_closure)
9941 const char *filename = bfd_get_filename (abfd);
9942 int fd, remote_errno;
9945 gdb_assert (remote_filename_p (filename));
9947 fd = remote_hostio_open (find_target_at (process_stratum),
9948 filename + 7, FILEIO_O_RDONLY, 0, &remote_errno);
9951 errno = remote_fileio_errno_to_host (remote_errno);
9952 bfd_set_error (bfd_error_system_call);
9956 stream = xmalloc (sizeof (int));
9962 remote_bfd_iovec_close (struct bfd *abfd, void *stream)
9964 int fd = *(int *)stream;
9969 /* Ignore errors on close; these may happen if the remote
9970 connection was already torn down. */
9971 remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno);
9973 /* Zero means success. */
9978 remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf,
9979 file_ptr nbytes, file_ptr offset)
9981 int fd = *(int *)stream;
9983 file_ptr pos, bytes;
9986 while (nbytes > pos)
9988 bytes = remote_hostio_pread (find_target_at (process_stratum),
9989 fd, (gdb_byte *) buf + pos, nbytes - pos,
9990 offset + pos, &remote_errno);
9992 /* Success, but no bytes, means end-of-file. */
9996 errno = remote_fileio_errno_to_host (remote_errno);
9997 bfd_set_error (bfd_error_system_call);
10008 remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb)
10010 /* FIXME: We should probably implement remote_hostio_stat. */
10011 sb->st_size = INT_MAX;
10016 remote_filename_p (const char *filename)
10018 return strncmp (filename,
10019 REMOTE_SYSROOT_PREFIX,
10020 sizeof (REMOTE_SYSROOT_PREFIX) - 1) == 0;
10024 remote_bfd_open (const char *remote_file, const char *target)
10026 bfd *abfd = gdb_bfd_openr_iovec (remote_file, target,
10027 remote_bfd_iovec_open, NULL,
10028 remote_bfd_iovec_pread,
10029 remote_bfd_iovec_close,
10030 remote_bfd_iovec_stat);
10036 remote_file_put (const char *local_file, const char *remote_file, int from_tty)
10038 struct cleanup *back_to, *close_cleanup;
10039 int retcode, fd, remote_errno, bytes, io_size;
10042 int bytes_in_buffer;
10045 struct remote_state *rs = get_remote_state ();
10047 if (!rs->remote_desc)
10048 error (_("command can only be used with remote target"));
10050 file = gdb_fopen_cloexec (local_file, "rb");
10052 perror_with_name (local_file);
10053 back_to = make_cleanup_fclose (file);
10055 fd = remote_hostio_open (find_target_at (process_stratum),
10056 remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT
10058 0700, &remote_errno);
10060 remote_hostio_error (remote_errno);
10062 /* Send up to this many bytes at once. They won't all fit in the
10063 remote packet limit, so we'll transfer slightly fewer. */
10064 io_size = get_remote_packet_size ();
10065 buffer = xmalloc (io_size);
10066 make_cleanup (xfree, buffer);
10068 close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd);
10070 bytes_in_buffer = 0;
10073 while (bytes_in_buffer || !saw_eof)
10077 bytes = fread (buffer + bytes_in_buffer, 1,
10078 io_size - bytes_in_buffer,
10083 error (_("Error reading %s."), local_file);
10086 /* EOF. Unless there is something still in the
10087 buffer from the last iteration, we are done. */
10089 if (bytes_in_buffer == 0)
10097 bytes += bytes_in_buffer;
10098 bytes_in_buffer = 0;
10100 retcode = remote_hostio_pwrite (find_target_at (process_stratum),
10102 offset, &remote_errno);
10105 remote_hostio_error (remote_errno);
10106 else if (retcode == 0)
10107 error (_("Remote write of %d bytes returned 0!"), bytes);
10108 else if (retcode < bytes)
10110 /* Short write. Save the rest of the read data for the next
10112 bytes_in_buffer = bytes - retcode;
10113 memmove (buffer, buffer + retcode, bytes_in_buffer);
10119 discard_cleanups (close_cleanup);
10120 if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno))
10121 remote_hostio_error (remote_errno);
10124 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file);
10125 do_cleanups (back_to);
10129 remote_file_get (const char *remote_file, const char *local_file, int from_tty)
10131 struct cleanup *back_to, *close_cleanup;
10132 int fd, remote_errno, bytes, io_size;
10136 struct remote_state *rs = get_remote_state ();
10138 if (!rs->remote_desc)
10139 error (_("command can only be used with remote target"));
10141 fd = remote_hostio_open (find_target_at (process_stratum),
10142 remote_file, FILEIO_O_RDONLY, 0, &remote_errno);
10144 remote_hostio_error (remote_errno);
10146 file = gdb_fopen_cloexec (local_file, "wb");
10148 perror_with_name (local_file);
10149 back_to = make_cleanup_fclose (file);
10151 /* Send up to this many bytes at once. They won't all fit in the
10152 remote packet limit, so we'll transfer slightly fewer. */
10153 io_size = get_remote_packet_size ();
10154 buffer = xmalloc (io_size);
10155 make_cleanup (xfree, buffer);
10157 close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd);
10162 bytes = remote_hostio_pread (find_target_at (process_stratum),
10163 fd, buffer, io_size, offset, &remote_errno);
10165 /* Success, but no bytes, means end-of-file. */
10168 remote_hostio_error (remote_errno);
10172 bytes = fwrite (buffer, 1, bytes, file);
10174 perror_with_name (local_file);
10177 discard_cleanups (close_cleanup);
10178 if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno))
10179 remote_hostio_error (remote_errno);
10182 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file);
10183 do_cleanups (back_to);
10187 remote_file_delete (const char *remote_file, int from_tty)
10189 int retcode, remote_errno;
10190 struct remote_state *rs = get_remote_state ();
10192 if (!rs->remote_desc)
10193 error (_("command can only be used with remote target"));
10195 retcode = remote_hostio_unlink (find_target_at (process_stratum),
10196 remote_file, &remote_errno);
10198 remote_hostio_error (remote_errno);
10201 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file);
10205 remote_put_command (char *args, int from_tty)
10207 struct cleanup *back_to;
10211 error_no_arg (_("file to put"));
10213 argv = gdb_buildargv (args);
10214 back_to = make_cleanup_freeargv (argv);
10215 if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL)
10216 error (_("Invalid parameters to remote put"));
10218 remote_file_put (argv[0], argv[1], from_tty);
10220 do_cleanups (back_to);
10224 remote_get_command (char *args, int from_tty)
10226 struct cleanup *back_to;
10230 error_no_arg (_("file to get"));
10232 argv = gdb_buildargv (args);
10233 back_to = make_cleanup_freeargv (argv);
10234 if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL)
10235 error (_("Invalid parameters to remote get"));
10237 remote_file_get (argv[0], argv[1], from_tty);
10239 do_cleanups (back_to);
10243 remote_delete_command (char *args, int from_tty)
10245 struct cleanup *back_to;
10249 error_no_arg (_("file to delete"));
10251 argv = gdb_buildargv (args);
10252 back_to = make_cleanup_freeargv (argv);
10253 if (argv[0] == NULL || argv[1] != NULL)
10254 error (_("Invalid parameters to remote delete"));
10256 remote_file_delete (argv[0], from_tty);
10258 do_cleanups (back_to);
10262 remote_command (char *args, int from_tty)
10264 help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout);
10268 remote_can_execute_reverse (struct target_ops *self)
10270 if (packet_support (PACKET_bs) == PACKET_ENABLE
10271 || packet_support (PACKET_bc) == PACKET_ENABLE)
10278 remote_supports_non_stop (struct target_ops *self)
10284 remote_supports_disable_randomization (struct target_ops *self)
10286 /* Only supported in extended mode. */
10291 remote_supports_multi_process (struct target_ops *self)
10293 struct remote_state *rs = get_remote_state ();
10295 /* Only extended-remote handles being attached to multiple
10296 processes, even though plain remote can use the multi-process
10297 thread id extensions, so that GDB knows the target process's
10299 return rs->extended && remote_multi_process_p (rs);
10303 remote_supports_cond_tracepoints (void)
10305 return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE;
10309 remote_supports_cond_breakpoints (struct target_ops *self)
10311 return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE;
10315 remote_supports_fast_tracepoints (void)
10317 return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE;
10321 remote_supports_static_tracepoints (void)
10323 return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE;
10327 remote_supports_install_in_trace (void)
10329 return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE;
10333 remote_supports_enable_disable_tracepoint (struct target_ops *self)
10335 return (packet_support (PACKET_EnableDisableTracepoints_feature)
10340 remote_supports_string_tracing (struct target_ops *self)
10342 return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE;
10346 remote_can_run_breakpoint_commands (struct target_ops *self)
10348 return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE;
10352 remote_trace_init (struct target_ops *self)
10355 remote_get_noisy_reply (&target_buf, &target_buf_size);
10356 if (strcmp (target_buf, "OK") != 0)
10357 error (_("Target does not support this command."));
10360 static void free_actions_list (char **actions_list);
10361 static void free_actions_list_cleanup_wrapper (void *);
10363 free_actions_list_cleanup_wrapper (void *al)
10365 free_actions_list (al);
10369 free_actions_list (char **actions_list)
10373 if (actions_list == 0)
10376 for (ndx = 0; actions_list[ndx]; ndx++)
10377 xfree (actions_list[ndx]);
10379 xfree (actions_list);
10382 /* Recursive routine to walk through command list including loops, and
10383 download packets for each command. */
10386 remote_download_command_source (int num, ULONGEST addr,
10387 struct command_line *cmds)
10389 struct remote_state *rs = get_remote_state ();
10390 struct command_line *cmd;
10392 for (cmd = cmds; cmd; cmd = cmd->next)
10394 QUIT; /* Allow user to bail out with ^C. */
10395 strcpy (rs->buf, "QTDPsrc:");
10396 encode_source_string (num, addr, "cmd", cmd->line,
10397 rs->buf + strlen (rs->buf),
10398 rs->buf_size - strlen (rs->buf));
10400 remote_get_noisy_reply (&target_buf, &target_buf_size);
10401 if (strcmp (target_buf, "OK"))
10402 warning (_("Target does not support source download."));
10404 if (cmd->control_type == while_control
10405 || cmd->control_type == while_stepping_control)
10407 remote_download_command_source (num, addr, *cmd->body_list);
10409 QUIT; /* Allow user to bail out with ^C. */
10410 strcpy (rs->buf, "QTDPsrc:");
10411 encode_source_string (num, addr, "cmd", "end",
10412 rs->buf + strlen (rs->buf),
10413 rs->buf_size - strlen (rs->buf));
10415 remote_get_noisy_reply (&target_buf, &target_buf_size);
10416 if (strcmp (target_buf, "OK"))
10417 warning (_("Target does not support source download."));
10423 remote_download_tracepoint (struct target_ops *self, struct bp_location *loc)
10425 #define BUF_SIZE 2048
10429 char buf[BUF_SIZE];
10430 char **tdp_actions;
10431 char **stepping_actions;
10433 struct cleanup *old_chain = NULL;
10434 struct agent_expr *aexpr;
10435 struct cleanup *aexpr_chain = NULL;
10437 struct breakpoint *b = loc->owner;
10438 struct tracepoint *t = (struct tracepoint *) b;
10440 encode_actions_rsp (loc, &tdp_actions, &stepping_actions);
10441 old_chain = make_cleanup (free_actions_list_cleanup_wrapper,
10443 (void) make_cleanup (free_actions_list_cleanup_wrapper,
10446 tpaddr = loc->address;
10447 sprintf_vma (addrbuf, tpaddr);
10448 xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number,
10449 addrbuf, /* address */
10450 (b->enable_state == bp_enabled ? 'E' : 'D'),
10451 t->step_count, t->pass_count);
10452 /* Fast tracepoints are mostly handled by the target, but we can
10453 tell the target how big of an instruction block should be moved
10455 if (b->type == bp_fast_tracepoint)
10457 /* Only test for support at download time; we may not know
10458 target capabilities at definition time. */
10459 if (remote_supports_fast_tracepoints ())
10463 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10464 tpaddr, &isize, NULL))
10465 xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x",
10468 /* If it passed validation at definition but fails now,
10469 something is very wrong. */
10470 internal_error (__FILE__, __LINE__,
10471 _("Fast tracepoint not "
10472 "valid during download"));
10475 /* Fast tracepoints are functionally identical to regular
10476 tracepoints, so don't take lack of support as a reason to
10477 give up on the trace run. */
10478 warning (_("Target does not support fast tracepoints, "
10479 "downloading %d as regular tracepoint"), b->number);
10481 else if (b->type == bp_static_tracepoint)
10483 /* Only test for support at download time; we may not know
10484 target capabilities at definition time. */
10485 if (remote_supports_static_tracepoints ())
10487 struct static_tracepoint_marker marker;
10489 if (target_static_tracepoint_marker_at (tpaddr, &marker))
10490 strcat (buf, ":S");
10492 error (_("Static tracepoint not valid during download"));
10495 /* Fast tracepoints are functionally identical to regular
10496 tracepoints, so don't take lack of support as a reason
10497 to give up on the trace run. */
10498 error (_("Target does not support static tracepoints"));
10500 /* If the tracepoint has a conditional, make it into an agent
10501 expression and append to the definition. */
10504 /* Only test support at download time, we may not know target
10505 capabilities at definition time. */
10506 if (remote_supports_cond_tracepoints ())
10508 aexpr = gen_eval_for_expr (tpaddr, loc->cond);
10509 aexpr_chain = make_cleanup_free_agent_expr (aexpr);
10510 xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,",
10512 pkt = buf + strlen (buf);
10513 for (ndx = 0; ndx < aexpr->len; ++ndx)
10514 pkt = pack_hex_byte (pkt, aexpr->buf[ndx]);
10516 do_cleanups (aexpr_chain);
10519 warning (_("Target does not support conditional tracepoints, "
10520 "ignoring tp %d cond"), b->number);
10523 if (b->commands || *default_collect)
10526 remote_get_noisy_reply (&target_buf, &target_buf_size);
10527 if (strcmp (target_buf, "OK"))
10528 error (_("Target does not support tracepoints."));
10530 /* do_single_steps (t); */
10533 for (ndx = 0; tdp_actions[ndx]; ndx++)
10535 QUIT; /* Allow user to bail out with ^C. */
10536 xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c",
10537 b->number, addrbuf, /* address */
10539 ((tdp_actions[ndx + 1] || stepping_actions)
10542 remote_get_noisy_reply (&target_buf,
10544 if (strcmp (target_buf, "OK"))
10545 error (_("Error on target while setting tracepoints."));
10548 if (stepping_actions)
10550 for (ndx = 0; stepping_actions[ndx]; ndx++)
10552 QUIT; /* Allow user to bail out with ^C. */
10553 xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s",
10554 b->number, addrbuf, /* address */
10555 ((ndx == 0) ? "S" : ""),
10556 stepping_actions[ndx],
10557 (stepping_actions[ndx + 1] ? "-" : ""));
10559 remote_get_noisy_reply (&target_buf,
10561 if (strcmp (target_buf, "OK"))
10562 error (_("Error on target while setting tracepoints."));
10566 if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE)
10568 if (b->addr_string)
10570 strcpy (buf, "QTDPsrc:");
10571 encode_source_string (b->number, loc->address,
10572 "at", b->addr_string, buf + strlen (buf),
10573 2048 - strlen (buf));
10576 remote_get_noisy_reply (&target_buf, &target_buf_size);
10577 if (strcmp (target_buf, "OK"))
10578 warning (_("Target does not support source download."));
10580 if (b->cond_string)
10582 strcpy (buf, "QTDPsrc:");
10583 encode_source_string (b->number, loc->address,
10584 "cond", b->cond_string, buf + strlen (buf),
10585 2048 - strlen (buf));
10587 remote_get_noisy_reply (&target_buf, &target_buf_size);
10588 if (strcmp (target_buf, "OK"))
10589 warning (_("Target does not support source download."));
10591 remote_download_command_source (b->number, loc->address,
10592 breakpoint_commands (b));
10595 do_cleanups (old_chain);
10599 remote_can_download_tracepoint (struct target_ops *self)
10601 struct remote_state *rs = get_remote_state ();
10602 struct trace_status *ts;
10605 /* Don't try to install tracepoints until we've relocated our
10606 symbols, and fetched and merged the target's tracepoint list with
10608 if (rs->starting_up)
10611 ts = current_trace_status ();
10612 status = remote_get_trace_status (self, ts);
10614 if (status == -1 || !ts->running_known || !ts->running)
10617 /* If we are in a tracing experiment, but remote stub doesn't support
10618 installing tracepoint in trace, we have to return. */
10619 if (!remote_supports_install_in_trace ())
10627 remote_download_trace_state_variable (struct target_ops *self,
10628 struct trace_state_variable *tsv)
10630 struct remote_state *rs = get_remote_state ();
10633 xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10634 tsv->number, phex ((ULONGEST) tsv->initial_value, 8),
10636 p = rs->buf + strlen (rs->buf);
10637 if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ())
10638 error (_("Trace state variable name too long for tsv definition packet"));
10639 p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name));
10642 remote_get_noisy_reply (&target_buf, &target_buf_size);
10643 if (*target_buf == '\0')
10644 error (_("Target does not support this command."));
10645 if (strcmp (target_buf, "OK") != 0)
10646 error (_("Error on target while downloading trace state variable."));
10650 remote_enable_tracepoint (struct target_ops *self,
10651 struct bp_location *location)
10653 struct remote_state *rs = get_remote_state ();
10656 sprintf_vma (addr_buf, location->address);
10657 xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s",
10658 location->owner->number, addr_buf);
10660 remote_get_noisy_reply (&rs->buf, &rs->buf_size);
10661 if (*rs->buf == '\0')
10662 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10663 if (strcmp (rs->buf, "OK") != 0)
10664 error (_("Error on target while enabling tracepoint."));
10668 remote_disable_tracepoint (struct target_ops *self,
10669 struct bp_location *location)
10671 struct remote_state *rs = get_remote_state ();
10674 sprintf_vma (addr_buf, location->address);
10675 xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s",
10676 location->owner->number, addr_buf);
10678 remote_get_noisy_reply (&rs->buf, &rs->buf_size);
10679 if (*rs->buf == '\0')
10680 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10681 if (strcmp (rs->buf, "OK") != 0)
10682 error (_("Error on target while disabling tracepoint."));
10686 remote_trace_set_readonly_regions (struct target_ops *self)
10690 bfd_size_type size;
10696 return; /* No information to give. */
10698 strcpy (target_buf, "QTro");
10699 offset = strlen (target_buf);
10700 for (s = exec_bfd->sections; s; s = s->next)
10702 char tmp1[40], tmp2[40];
10705 if ((s->flags & SEC_LOAD) == 0 ||
10706 /* (s->flags & SEC_CODE) == 0 || */
10707 (s->flags & SEC_READONLY) == 0)
10711 vma = bfd_get_section_vma (abfd, s);
10712 size = bfd_get_section_size (s);
10713 sprintf_vma (tmp1, vma);
10714 sprintf_vma (tmp2, vma + size);
10715 sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2);
10716 if (offset + sec_length + 1 > target_buf_size)
10718 if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE)
10720 Too many sections for read-only sections definition packet."));
10723 xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s",
10725 offset += sec_length;
10729 putpkt (target_buf);
10730 getpkt (&target_buf, &target_buf_size, 0);
10735 remote_trace_start (struct target_ops *self)
10737 putpkt ("QTStart");
10738 remote_get_noisy_reply (&target_buf, &target_buf_size);
10739 if (*target_buf == '\0')
10740 error (_("Target does not support this command."));
10741 if (strcmp (target_buf, "OK") != 0)
10742 error (_("Bogus reply from target: %s"), target_buf);
10746 remote_get_trace_status (struct target_ops *self, struct trace_status *ts)
10748 /* Initialize it just to avoid a GCC false warning. */
10750 /* FIXME we need to get register block size some other way. */
10751 extern int trace_regblock_size;
10752 volatile struct gdb_exception ex;
10753 enum packet_result result;
10755 if (packet_support (PACKET_qTStatus) == PACKET_DISABLE)
10758 trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet;
10760 putpkt ("qTStatus");
10762 TRY_CATCH (ex, RETURN_MASK_ERROR)
10764 p = remote_get_noisy_reply (&target_buf, &target_buf_size);
10768 if (ex.error != TARGET_CLOSE_ERROR)
10770 exception_fprintf (gdb_stderr, ex, "qTStatus: ");
10773 throw_exception (ex);
10776 result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]);
10778 /* If the remote target doesn't do tracing, flag it. */
10779 if (result == PACKET_UNKNOWN)
10782 /* We're working with a live target. */
10783 ts->filename = NULL;
10786 error (_("Bogus trace status reply from target: %s"), target_buf);
10788 /* Function 'parse_trace_status' sets default value of each field of
10789 'ts' at first, so we don't have to do it here. */
10790 parse_trace_status (p, ts);
10792 return ts->running;
10796 remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp,
10797 struct uploaded_tp *utp)
10799 struct remote_state *rs = get_remote_state ();
10801 struct bp_location *loc;
10802 struct tracepoint *tp = (struct tracepoint *) bp;
10803 size_t size = get_remote_packet_size ();
10807 tp->base.hit_count = 0;
10808 tp->traceframe_usage = 0;
10809 for (loc = tp->base.loc; loc; loc = loc->next)
10811 /* If the tracepoint was never downloaded, don't go asking for
10813 if (tp->number_on_target == 0)
10815 xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target,
10816 phex_nz (loc->address, 0));
10818 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
10819 if (reply && *reply)
10822 parse_tracepoint_status (reply + 1, bp, utp);
10828 utp->hit_count = 0;
10829 utp->traceframe_usage = 0;
10830 xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number,
10831 phex_nz (utp->addr, 0));
10833 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
10834 if (reply && *reply)
10837 parse_tracepoint_status (reply + 1, bp, utp);
10843 remote_trace_stop (struct target_ops *self)
10846 remote_get_noisy_reply (&target_buf, &target_buf_size);
10847 if (*target_buf == '\0')
10848 error (_("Target does not support this command."));
10849 if (strcmp (target_buf, "OK") != 0)
10850 error (_("Bogus reply from target: %s"), target_buf);
10854 remote_trace_find (struct target_ops *self,
10855 enum trace_find_type type, int num,
10856 CORE_ADDR addr1, CORE_ADDR addr2,
10859 struct remote_state *rs = get_remote_state ();
10860 char *endbuf = rs->buf + get_remote_packet_size ();
10862 int target_frameno = -1, target_tracept = -1;
10864 /* Lookups other than by absolute frame number depend on the current
10865 trace selected, so make sure it is correct on the remote end
10867 if (type != tfind_number)
10868 set_remote_traceframe ();
10871 strcpy (p, "QTFrame:");
10872 p = strchr (p, '\0');
10876 xsnprintf (p, endbuf - p, "%x", num);
10879 xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0));
10882 xsnprintf (p, endbuf - p, "tdp:%x", num);
10885 xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0),
10886 phex_nz (addr2, 0));
10888 case tfind_outside:
10889 xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0),
10890 phex_nz (addr2, 0));
10893 error (_("Unknown trace find type %d"), type);
10897 reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size);
10898 if (*reply == '\0')
10899 error (_("Target does not support this command."));
10901 while (reply && *reply)
10906 target_frameno = (int) strtol (p, &reply, 16);
10908 error (_("Unable to parse trace frame number"));
10909 /* Don't update our remote traceframe number cache on failure
10910 to select a remote traceframe. */
10911 if (target_frameno == -1)
10916 target_tracept = (int) strtol (p, &reply, 16);
10918 error (_("Unable to parse tracepoint number"));
10920 case 'O': /* "OK"? */
10921 if (reply[1] == 'K' && reply[2] == '\0')
10924 error (_("Bogus reply from target: %s"), reply);
10927 error (_("Bogus reply from target: %s"), reply);
10930 *tpp = target_tracept;
10932 rs->remote_traceframe_number = target_frameno;
10933 return target_frameno;
10937 remote_get_trace_state_variable_value (struct target_ops *self,
10938 int tsvnum, LONGEST *val)
10940 struct remote_state *rs = get_remote_state ();
10944 set_remote_traceframe ();
10946 xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum);
10948 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
10949 if (reply && *reply)
10953 unpack_varlen_hex (reply + 1, &uval);
10954 *val = (LONGEST) uval;
10962 remote_save_trace_data (struct target_ops *self, const char *filename)
10964 struct remote_state *rs = get_remote_state ();
10968 strcpy (p, "QTSave:");
10970 if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ())
10971 error (_("Remote file name too long for trace save packet"));
10972 p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename));
10975 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
10976 if (*reply == '\0')
10977 error (_("Target does not support this command."));
10978 if (strcmp (reply, "OK") != 0)
10979 error (_("Bogus reply from target: %s"), reply);
10983 /* This is basically a memory transfer, but needs to be its own packet
10984 because we don't know how the target actually organizes its trace
10985 memory, plus we want to be able to ask for as much as possible, but
10986 not be unhappy if we don't get as much as we ask for. */
10989 remote_get_raw_trace_data (struct target_ops *self,
10990 gdb_byte *buf, ULONGEST offset, LONGEST len)
10992 struct remote_state *rs = get_remote_state ();
10998 strcpy (p, "qTBuffer:");
11000 p += hexnumstr (p, offset);
11002 p += hexnumstr (p, len);
11006 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11007 if (reply && *reply)
11009 /* 'l' by itself means we're at the end of the buffer and
11010 there is nothing more to get. */
11014 /* Convert the reply into binary. Limit the number of bytes to
11015 convert according to our passed-in buffer size, rather than
11016 what was returned in the packet; if the target is
11017 unexpectedly generous and gives us a bigger reply than we
11018 asked for, we don't want to crash. */
11019 rslt = hex2bin (target_buf, buf, len);
11023 /* Something went wrong, flag as an error. */
11028 remote_set_disconnected_tracing (struct target_ops *self, int val)
11030 struct remote_state *rs = get_remote_state ();
11032 if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE)
11036 xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val);
11038 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11039 if (*reply == '\0')
11040 error (_("Target does not support this command."));
11041 if (strcmp (reply, "OK") != 0)
11042 error (_("Bogus reply from target: %s"), reply);
11045 warning (_("Target does not support disconnected tracing."));
11049 remote_core_of_thread (struct target_ops *ops, ptid_t ptid)
11051 struct thread_info *info = find_thread_ptid (ptid);
11053 if (info && info->private)
11054 return info->private->core;
11059 remote_set_circular_trace_buffer (struct target_ops *self, int val)
11061 struct remote_state *rs = get_remote_state ();
11064 xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val);
11066 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11067 if (*reply == '\0')
11068 error (_("Target does not support this command."));
11069 if (strcmp (reply, "OK") != 0)
11070 error (_("Bogus reply from target: %s"), reply);
11073 static struct traceframe_info *
11074 remote_traceframe_info (struct target_ops *self)
11078 text = target_read_stralloc (¤t_target,
11079 TARGET_OBJECT_TRACEFRAME_INFO, NULL);
11082 struct traceframe_info *info;
11083 struct cleanup *back_to = make_cleanup (xfree, text);
11085 info = parse_traceframe_info (text);
11086 do_cleanups (back_to);
11093 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11094 instruction on which a fast tracepoint may be placed. Returns -1
11095 if the packet is not supported, and 0 if the minimum instruction
11096 length is unknown. */
11099 remote_get_min_fast_tracepoint_insn_len (struct target_ops *self)
11101 struct remote_state *rs = get_remote_state ();
11104 /* If we're not debugging a process yet, the IPA can't be
11106 if (!target_has_execution)
11109 /* Make sure the remote is pointing at the right process. */
11110 set_general_process ();
11112 xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen");
11114 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11115 if (*reply == '\0')
11119 ULONGEST min_insn_len;
11121 unpack_varlen_hex (reply, &min_insn_len);
11123 return (int) min_insn_len;
11128 remote_set_trace_buffer_size (struct target_ops *self, LONGEST val)
11130 if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE)
11132 struct remote_state *rs = get_remote_state ();
11133 char *buf = rs->buf;
11134 char *endbuf = rs->buf + get_remote_packet_size ();
11135 enum packet_result result;
11137 gdb_assert (val >= 0 || val == -1);
11138 buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:");
11139 /* Send -1 as literal "-1" to avoid host size dependency. */
11143 buf += hexnumstr (buf, (ULONGEST) -val);
11146 buf += hexnumstr (buf, (ULONGEST) val);
11149 remote_get_noisy_reply (&rs->buf, &rs->buf_size);
11150 result = packet_ok (rs->buf,
11151 &remote_protocol_packets[PACKET_QTBuffer_size]);
11153 if (result != PACKET_OK)
11154 warning (_("Bogus reply from target: %s"), rs->buf);
11159 remote_set_trace_notes (struct target_ops *self,
11160 const char *user, const char *notes,
11161 const char *stop_notes)
11163 struct remote_state *rs = get_remote_state ();
11165 char *buf = rs->buf;
11166 char *endbuf = rs->buf + get_remote_packet_size ();
11169 buf += xsnprintf (buf, endbuf - buf, "QTNotes:");
11172 buf += xsnprintf (buf, endbuf - buf, "user:");
11173 nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user));
11179 buf += xsnprintf (buf, endbuf - buf, "notes:");
11180 nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes));
11186 buf += xsnprintf (buf, endbuf - buf, "tstop:");
11187 nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes));
11191 /* Ensure the buffer is terminated. */
11195 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11196 if (*reply == '\0')
11199 if (strcmp (reply, "OK") != 0)
11200 error (_("Bogus reply from target: %s"), reply);
11206 remote_use_agent (struct target_ops *self, int use)
11208 if (packet_support (PACKET_QAgent) != PACKET_DISABLE)
11210 struct remote_state *rs = get_remote_state ();
11212 /* If the stub supports QAgent. */
11213 xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use);
11215 getpkt (&rs->buf, &rs->buf_size, 0);
11217 if (strcmp (rs->buf, "OK") == 0)
11228 remote_can_use_agent (struct target_ops *self)
11230 return (packet_support (PACKET_QAgent) != PACKET_DISABLE);
11233 struct btrace_target_info
11235 /* The ptid of the traced thread. */
11239 /* Check whether the target supports branch tracing. */
11242 remote_supports_btrace (struct target_ops *self)
11244 if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE)
11246 if (packet_support (PACKET_Qbtrace_bts) != PACKET_ENABLE)
11248 if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE)
11254 /* Enable branch tracing. */
11256 static struct btrace_target_info *
11257 remote_enable_btrace (struct target_ops *self, ptid_t ptid)
11259 struct btrace_target_info *tinfo = NULL;
11260 struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts];
11261 struct remote_state *rs = get_remote_state ();
11262 char *buf = rs->buf;
11263 char *endbuf = rs->buf + get_remote_packet_size ();
11265 if (packet_config_support (packet) != PACKET_ENABLE)
11266 error (_("Target does not support branch tracing."));
11268 set_general_thread (ptid);
11270 buf += xsnprintf (buf, endbuf - buf, "%s", packet->name);
11272 getpkt (&rs->buf, &rs->buf_size, 0);
11274 if (packet_ok (rs->buf, packet) == PACKET_ERROR)
11276 if (rs->buf[0] == 'E' && rs->buf[1] == '.')
11277 error (_("Could not enable branch tracing for %s: %s"),
11278 target_pid_to_str (ptid), rs->buf + 2);
11280 error (_("Could not enable branch tracing for %s."),
11281 target_pid_to_str (ptid));
11284 tinfo = xzalloc (sizeof (*tinfo));
11285 tinfo->ptid = ptid;
11290 /* Disable branch tracing. */
11293 remote_disable_btrace (struct target_ops *self,
11294 struct btrace_target_info *tinfo)
11296 struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off];
11297 struct remote_state *rs = get_remote_state ();
11298 char *buf = rs->buf;
11299 char *endbuf = rs->buf + get_remote_packet_size ();
11301 if (packet_config_support (packet) != PACKET_ENABLE)
11302 error (_("Target does not support branch tracing."));
11304 set_general_thread (tinfo->ptid);
11306 buf += xsnprintf (buf, endbuf - buf, "%s", packet->name);
11308 getpkt (&rs->buf, &rs->buf_size, 0);
11310 if (packet_ok (rs->buf, packet) == PACKET_ERROR)
11312 if (rs->buf[0] == 'E' && rs->buf[1] == '.')
11313 error (_("Could not disable branch tracing for %s: %s"),
11314 target_pid_to_str (tinfo->ptid), rs->buf + 2);
11316 error (_("Could not disable branch tracing for %s."),
11317 target_pid_to_str (tinfo->ptid));
11323 /* Teardown branch tracing. */
11326 remote_teardown_btrace (struct target_ops *self,
11327 struct btrace_target_info *tinfo)
11329 /* We must not talk to the target during teardown. */
11333 /* Read the branch trace. */
11335 static enum btrace_error
11336 remote_read_btrace (struct target_ops *self,
11337 VEC (btrace_block_s) **btrace,
11338 struct btrace_target_info *tinfo,
11339 enum btrace_read_type type)
11341 struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace];
11342 struct remote_state *rs = get_remote_state ();
11343 struct cleanup *cleanup;
11347 if (packet_config_support (packet) != PACKET_ENABLE)
11348 error (_("Target does not support branch tracing."));
11350 #if !defined(HAVE_LIBEXPAT)
11351 error (_("Cannot process branch tracing result. XML parsing not supported."));
11356 case BTRACE_READ_ALL:
11359 case BTRACE_READ_NEW:
11362 case BTRACE_READ_DELTA:
11366 internal_error (__FILE__, __LINE__,
11367 _("Bad branch tracing read type: %u."),
11368 (unsigned int) type);
11371 xml = target_read_stralloc (¤t_target,
11372 TARGET_OBJECT_BTRACE, annex);
11374 return BTRACE_ERR_UNKNOWN;
11376 cleanup = make_cleanup (xfree, xml);
11377 *btrace = parse_xml_btrace (xml);
11378 do_cleanups (cleanup);
11380 return BTRACE_ERR_NONE;
11384 remote_augmented_libraries_svr4_read (struct target_ops *self)
11386 return (packet_support (PACKET_augmented_libraries_svr4_read_feature)
11390 /* Implementation of to_load. */
11393 remote_load (struct target_ops *self, const char *name, int from_tty)
11395 generic_load (name, from_tty);
11399 init_remote_ops (void)
11401 remote_ops.to_shortname = "remote";
11402 remote_ops.to_longname = "Remote serial target in gdb-specific protocol";
11403 remote_ops.to_doc =
11404 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11405 Specify the serial device it is connected to\n\
11406 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11407 remote_ops.to_open = remote_open;
11408 remote_ops.to_close = remote_close;
11409 remote_ops.to_detach = remote_detach;
11410 remote_ops.to_disconnect = remote_disconnect;
11411 remote_ops.to_resume = remote_resume;
11412 remote_ops.to_wait = remote_wait;
11413 remote_ops.to_fetch_registers = remote_fetch_registers;
11414 remote_ops.to_store_registers = remote_store_registers;
11415 remote_ops.to_prepare_to_store = remote_prepare_to_store;
11416 remote_ops.to_files_info = remote_files_info;
11417 remote_ops.to_insert_breakpoint = remote_insert_breakpoint;
11418 remote_ops.to_remove_breakpoint = remote_remove_breakpoint;
11419 remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint;
11420 remote_ops.to_stopped_data_address = remote_stopped_data_address;
11421 remote_ops.to_watchpoint_addr_within_range =
11422 remote_watchpoint_addr_within_range;
11423 remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
11424 remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
11425 remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
11426 remote_ops.to_region_ok_for_hw_watchpoint
11427 = remote_region_ok_for_hw_watchpoint;
11428 remote_ops.to_insert_watchpoint = remote_insert_watchpoint;
11429 remote_ops.to_remove_watchpoint = remote_remove_watchpoint;
11430 remote_ops.to_kill = remote_kill;
11431 remote_ops.to_load = remote_load;
11432 remote_ops.to_mourn_inferior = remote_mourn;
11433 remote_ops.to_pass_signals = remote_pass_signals;
11434 remote_ops.to_program_signals = remote_program_signals;
11435 remote_ops.to_thread_alive = remote_thread_alive;
11436 remote_ops.to_find_new_threads = remote_threads_info;
11437 remote_ops.to_pid_to_str = remote_pid_to_str;
11438 remote_ops.to_extra_thread_info = remote_threads_extra_info;
11439 remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid;
11440 remote_ops.to_stop = remote_stop;
11441 remote_ops.to_xfer_partial = remote_xfer_partial;
11442 remote_ops.to_rcmd = remote_rcmd;
11443 remote_ops.to_log_command = serial_log_command;
11444 remote_ops.to_get_thread_local_address = remote_get_thread_local_address;
11445 remote_ops.to_stratum = process_stratum;
11446 remote_ops.to_has_all_memory = default_child_has_all_memory;
11447 remote_ops.to_has_memory = default_child_has_memory;
11448 remote_ops.to_has_stack = default_child_has_stack;
11449 remote_ops.to_has_registers = default_child_has_registers;
11450 remote_ops.to_has_execution = default_child_has_execution;
11451 remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
11452 remote_ops.to_can_execute_reverse = remote_can_execute_reverse;
11453 remote_ops.to_magic = OPS_MAGIC;
11454 remote_ops.to_memory_map = remote_memory_map;
11455 remote_ops.to_flash_erase = remote_flash_erase;
11456 remote_ops.to_flash_done = remote_flash_done;
11457 remote_ops.to_read_description = remote_read_description;
11458 remote_ops.to_search_memory = remote_search_memory;
11459 remote_ops.to_can_async_p = remote_can_async_p;
11460 remote_ops.to_is_async_p = remote_is_async_p;
11461 remote_ops.to_async = remote_async;
11462 remote_ops.to_terminal_inferior = remote_terminal_inferior;
11463 remote_ops.to_terminal_ours = remote_terminal_ours;
11464 remote_ops.to_supports_non_stop = remote_supports_non_stop;
11465 remote_ops.to_supports_multi_process = remote_supports_multi_process;
11466 remote_ops.to_supports_disable_randomization
11467 = remote_supports_disable_randomization;
11468 remote_ops.to_fileio_open = remote_hostio_open;
11469 remote_ops.to_fileio_pwrite = remote_hostio_pwrite;
11470 remote_ops.to_fileio_pread = remote_hostio_pread;
11471 remote_ops.to_fileio_close = remote_hostio_close;
11472 remote_ops.to_fileio_unlink = remote_hostio_unlink;
11473 remote_ops.to_fileio_readlink = remote_hostio_readlink;
11474 remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint;
11475 remote_ops.to_supports_string_tracing = remote_supports_string_tracing;
11476 remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints;
11477 remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands;
11478 remote_ops.to_trace_init = remote_trace_init;
11479 remote_ops.to_download_tracepoint = remote_download_tracepoint;
11480 remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint;
11481 remote_ops.to_download_trace_state_variable
11482 = remote_download_trace_state_variable;
11483 remote_ops.to_enable_tracepoint = remote_enable_tracepoint;
11484 remote_ops.to_disable_tracepoint = remote_disable_tracepoint;
11485 remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions;
11486 remote_ops.to_trace_start = remote_trace_start;
11487 remote_ops.to_get_trace_status = remote_get_trace_status;
11488 remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status;
11489 remote_ops.to_trace_stop = remote_trace_stop;
11490 remote_ops.to_trace_find = remote_trace_find;
11491 remote_ops.to_get_trace_state_variable_value
11492 = remote_get_trace_state_variable_value;
11493 remote_ops.to_save_trace_data = remote_save_trace_data;
11494 remote_ops.to_upload_tracepoints = remote_upload_tracepoints;
11495 remote_ops.to_upload_trace_state_variables
11496 = remote_upload_trace_state_variables;
11497 remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data;
11498 remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len;
11499 remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing;
11500 remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer;
11501 remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size;
11502 remote_ops.to_set_trace_notes = remote_set_trace_notes;
11503 remote_ops.to_core_of_thread = remote_core_of_thread;
11504 remote_ops.to_verify_memory = remote_verify_memory;
11505 remote_ops.to_get_tib_address = remote_get_tib_address;
11506 remote_ops.to_set_permissions = remote_set_permissions;
11507 remote_ops.to_static_tracepoint_marker_at
11508 = remote_static_tracepoint_marker_at;
11509 remote_ops.to_static_tracepoint_markers_by_strid
11510 = remote_static_tracepoint_markers_by_strid;
11511 remote_ops.to_traceframe_info = remote_traceframe_info;
11512 remote_ops.to_use_agent = remote_use_agent;
11513 remote_ops.to_can_use_agent = remote_can_use_agent;
11514 remote_ops.to_supports_btrace = remote_supports_btrace;
11515 remote_ops.to_enable_btrace = remote_enable_btrace;
11516 remote_ops.to_disable_btrace = remote_disable_btrace;
11517 remote_ops.to_teardown_btrace = remote_teardown_btrace;
11518 remote_ops.to_read_btrace = remote_read_btrace;
11519 remote_ops.to_augmented_libraries_svr4_read =
11520 remote_augmented_libraries_svr4_read;
11523 /* Set up the extended remote vector by making a copy of the standard
11524 remote vector and adding to it. */
11527 init_extended_remote_ops (void)
11529 extended_remote_ops = remote_ops;
11531 extended_remote_ops.to_shortname = "extended-remote";
11532 extended_remote_ops.to_longname =
11533 "Extended remote serial target in gdb-specific protocol";
11534 extended_remote_ops.to_doc =
11535 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11536 Specify the serial device it is connected to (e.g. /dev/ttya).";
11537 extended_remote_ops.to_open = extended_remote_open;
11538 extended_remote_ops.to_create_inferior = extended_remote_create_inferior;
11539 extended_remote_ops.to_mourn_inferior = extended_remote_mourn;
11540 extended_remote_ops.to_detach = extended_remote_detach;
11541 extended_remote_ops.to_attach = extended_remote_attach;
11542 extended_remote_ops.to_post_attach = extended_remote_post_attach;
11543 extended_remote_ops.to_kill = extended_remote_kill;
11544 extended_remote_ops.to_supports_disable_randomization
11545 = extended_remote_supports_disable_randomization;
11549 remote_can_async_p (struct target_ops *ops)
11551 struct remote_state *rs = get_remote_state ();
11553 if (!target_async_permitted)
11554 /* We only enable async when the user specifically asks for it. */
11557 /* We're async whenever the serial device is. */
11558 return serial_can_async_p (rs->remote_desc);
11562 remote_is_async_p (struct target_ops *ops)
11564 struct remote_state *rs = get_remote_state ();
11566 if (!target_async_permitted)
11567 /* We only enable async when the user specifically asks for it. */
11570 /* We're async whenever the serial device is. */
11571 return serial_is_async_p (rs->remote_desc);
11574 /* Pass the SERIAL event on and up to the client. One day this code
11575 will be able to delay notifying the client of an event until the
11576 point where an entire packet has been received. */
11578 static serial_event_ftype remote_async_serial_handler;
11581 remote_async_serial_handler (struct serial *scb, void *context)
11583 struct remote_state *rs = context;
11585 /* Don't propogate error information up to the client. Instead let
11586 the client find out about the error by querying the target. */
11587 rs->async_client_callback (INF_REG_EVENT, rs->async_client_context);
11591 remote_async_inferior_event_handler (gdb_client_data data)
11593 inferior_event_handler (INF_REG_EVENT, NULL);
11597 remote_async (struct target_ops *ops,
11598 void (*callback) (enum inferior_event_type event_type,
11602 struct remote_state *rs = get_remote_state ();
11604 if (callback != NULL)
11606 serial_async (rs->remote_desc, remote_async_serial_handler, rs);
11607 rs->async_client_callback = callback;
11608 rs->async_client_context = context;
11611 serial_async (rs->remote_desc, NULL, NULL);
11615 set_remote_cmd (char *args, int from_tty)
11617 help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout);
11621 show_remote_cmd (char *args, int from_tty)
11623 /* We can't just use cmd_show_list here, because we want to skip
11624 the redundant "show remote Z-packet" and the legacy aliases. */
11625 struct cleanup *showlist_chain;
11626 struct cmd_list_element *list = remote_show_cmdlist;
11627 struct ui_out *uiout = current_uiout;
11629 showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist");
11630 for (; list != NULL; list = list->next)
11631 if (strcmp (list->name, "Z-packet") == 0)
11633 else if (list->type == not_set_cmd)
11634 /* Alias commands are exactly like the original, except they
11635 don't have the normal type. */
11639 struct cleanup *option_chain
11640 = make_cleanup_ui_out_tuple_begin_end (uiout, "option");
11642 ui_out_field_string (uiout, "name", list->name);
11643 ui_out_text (uiout, ": ");
11644 if (list->type == show_cmd)
11645 do_show_command ((char *) NULL, from_tty, list);
11647 cmd_func (list, NULL, from_tty);
11648 /* Close the tuple. */
11649 do_cleanups (option_chain);
11652 /* Close the tuple. */
11653 do_cleanups (showlist_chain);
11657 /* Function to be called whenever a new objfile (shlib) is detected. */
11659 remote_new_objfile (struct objfile *objfile)
11661 struct remote_state *rs = get_remote_state ();
11663 if (rs->remote_desc != 0) /* Have a remote connection. */
11664 remote_check_symbols ();
11667 /* Pull all the tracepoints defined on the target and create local
11668 data structures representing them. We don't want to create real
11669 tracepoints yet, we don't want to mess up the user's existing
11673 remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp)
11675 struct remote_state *rs = get_remote_state ();
11678 /* Ask for a first packet of tracepoint definition. */
11680 getpkt (&rs->buf, &rs->buf_size, 0);
11682 while (*p && *p != 'l')
11684 parse_tracepoint_definition (p, utpp);
11685 /* Ask for another packet of tracepoint definition. */
11687 getpkt (&rs->buf, &rs->buf_size, 0);
11694 remote_upload_trace_state_variables (struct target_ops *self,
11695 struct uploaded_tsv **utsvp)
11697 struct remote_state *rs = get_remote_state ();
11700 /* Ask for a first packet of variable definition. */
11702 getpkt (&rs->buf, &rs->buf_size, 0);
11704 while (*p && *p != 'l')
11706 parse_tsv_definition (p, utsvp);
11707 /* Ask for another packet of variable definition. */
11709 getpkt (&rs->buf, &rs->buf_size, 0);
11715 /* The "set/show range-stepping" show hook. */
11718 show_range_stepping (struct ui_file *file, int from_tty,
11719 struct cmd_list_element *c,
11722 fprintf_filtered (file,
11723 _("Debugger's willingness to use range stepping "
11724 "is %s.\n"), value);
11727 /* The "set/show range-stepping" set hook. */
11730 set_range_stepping (char *ignore_args, int from_tty,
11731 struct cmd_list_element *c)
11733 struct remote_state *rs = get_remote_state ();
11735 /* Whene enabling, check whether range stepping is actually
11736 supported by the target, and warn if not. */
11737 if (use_range_stepping)
11739 if (rs->remote_desc != NULL)
11741 if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN)
11742 remote_vcont_probe (rs);
11744 if (packet_support (PACKET_vCont) == PACKET_ENABLE
11745 && rs->supports_vCont.r)
11749 warning (_("Range stepping is not supported by the current target"));
11754 _initialize_remote (void)
11756 struct remote_state *rs;
11757 struct cmd_list_element *cmd;
11758 const char *cmd_name;
11760 /* architecture specific data */
11761 remote_gdbarch_data_handle =
11762 gdbarch_data_register_post_init (init_remote_state);
11763 remote_g_packet_data_handle =
11764 gdbarch_data_register_pre_init (remote_g_packet_data_init);
11766 /* Initialize the per-target state. At the moment there is only one
11767 of these, not one per target. Only one target is active at a
11769 remote_state = new_remote_state ();
11771 init_remote_ops ();
11772 add_target (&remote_ops);
11774 init_extended_remote_ops ();
11775 add_target (&extended_remote_ops);
11777 /* Hook into new objfile notification. */
11778 observer_attach_new_objfile (remote_new_objfile);
11779 /* We're no longer interested in notification events of an inferior
11781 observer_attach_inferior_exit (discard_pending_stop_replies);
11783 /* Set up signal handlers. */
11784 async_sigint_remote_token =
11785 create_async_signal_handler (async_remote_interrupt, NULL);
11786 async_sigint_remote_twice_token =
11787 create_async_signal_handler (async_remote_interrupt_twice, NULL);
11790 init_remote_threadtests ();
11793 stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree);
11794 /* set/show remote ... */
11796 add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\
11797 Remote protocol specific variables\n\
11798 Configure various remote-protocol specific variables such as\n\
11799 the packets being used"),
11800 &remote_set_cmdlist, "set remote ",
11801 0 /* allow-unknown */, &setlist);
11802 add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\
11803 Remote protocol specific variables\n\
11804 Configure various remote-protocol specific variables such as\n\
11805 the packets being used"),
11806 &remote_show_cmdlist, "show remote ",
11807 0 /* allow-unknown */, &showlist);
11809 add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\
11810 Compare section data on target to the exec file.\n\
11811 Argument is a single section name (default: all loaded sections).\n\
11812 To compare only read-only loaded sections, specify the -r option."),
11815 add_cmd ("packet", class_maintenance, packet_command, _("\
11816 Send an arbitrary packet to a remote target.\n\
11817 maintenance packet TEXT\n\
11818 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11819 this command sends the string TEXT to the inferior, and displays the\n\
11820 response packet. GDB supplies the initial `$' character, and the\n\
11821 terminating `#' character and checksum."),
11824 add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\
11825 Set whether to send break if interrupted."), _("\
11826 Show whether to send break if interrupted."), _("\
11827 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11828 set_remotebreak, show_remotebreak,
11829 &setlist, &showlist);
11830 cmd_name = "remotebreak";
11831 cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1);
11832 deprecate_cmd (cmd, "set remote interrupt-sequence");
11833 cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */
11834 cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1);
11835 deprecate_cmd (cmd, "show remote interrupt-sequence");
11837 add_setshow_enum_cmd ("interrupt-sequence", class_support,
11838 interrupt_sequence_modes, &interrupt_sequence_mode,
11840 Set interrupt sequence to remote target."), _("\
11841 Show interrupt sequence to remote target."), _("\
11842 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11843 NULL, show_interrupt_sequence,
11844 &remote_set_cmdlist,
11845 &remote_show_cmdlist);
11847 add_setshow_boolean_cmd ("interrupt-on-connect", class_support,
11848 &interrupt_on_connect, _("\
11849 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11850 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11851 If set, interrupt sequence is sent to remote target."),
11853 &remote_set_cmdlist, &remote_show_cmdlist);
11855 /* Install commands for configuring memory read/write packets. */
11857 add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\
11858 Set the maximum number of bytes per memory write packet (deprecated)."),
11860 add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\
11861 Show the maximum number of bytes per memory write packet (deprecated)."),
11863 add_cmd ("memory-write-packet-size", no_class,
11864 set_memory_write_packet_size, _("\
11865 Set the maximum number of bytes per memory-write packet.\n\
11866 Specify the number of bytes in a packet or 0 (zero) for the\n\
11867 default packet size. The actual limit is further reduced\n\
11868 dependent on the target. Specify ``fixed'' to disable the\n\
11869 further restriction and ``limit'' to enable that restriction."),
11870 &remote_set_cmdlist);
11871 add_cmd ("memory-read-packet-size", no_class,
11872 set_memory_read_packet_size, _("\
11873 Set the maximum number of bytes per memory-read packet.\n\
11874 Specify the number of bytes in a packet or 0 (zero) for the\n\
11875 default packet size. The actual limit is further reduced\n\
11876 dependent on the target. Specify ``fixed'' to disable the\n\
11877 further restriction and ``limit'' to enable that restriction."),
11878 &remote_set_cmdlist);
11879 add_cmd ("memory-write-packet-size", no_class,
11880 show_memory_write_packet_size,
11881 _("Show the maximum number of bytes per memory-write packet."),
11882 &remote_show_cmdlist);
11883 add_cmd ("memory-read-packet-size", no_class,
11884 show_memory_read_packet_size,
11885 _("Show the maximum number of bytes per memory-read packet."),
11886 &remote_show_cmdlist);
11888 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class,
11889 &remote_hw_watchpoint_limit, _("\
11890 Set the maximum number of target hardware watchpoints."), _("\
11891 Show the maximum number of target hardware watchpoints."), _("\
11892 Specify a negative limit for unlimited."),
11893 NULL, NULL, /* FIXME: i18n: The maximum
11894 number of target hardware
11895 watchpoints is %s. */
11896 &remote_set_cmdlist, &remote_show_cmdlist);
11897 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class,
11898 &remote_hw_watchpoint_length_limit, _("\
11899 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11900 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11901 Specify a negative limit for unlimited."),
11902 NULL, NULL, /* FIXME: i18n: The maximum
11903 length (in bytes) of a target
11904 hardware watchpoint is %s. */
11905 &remote_set_cmdlist, &remote_show_cmdlist);
11906 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class,
11907 &remote_hw_breakpoint_limit, _("\
11908 Set the maximum number of target hardware breakpoints."), _("\
11909 Show the maximum number of target hardware breakpoints."), _("\
11910 Specify a negative limit for unlimited."),
11911 NULL, NULL, /* FIXME: i18n: The maximum
11912 number of target hardware
11913 breakpoints is %s. */
11914 &remote_set_cmdlist, &remote_show_cmdlist);
11916 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure,
11917 &remote_address_size, _("\
11918 Set the maximum size of the address (in bits) in a memory packet."), _("\
11919 Show the maximum size of the address (in bits) in a memory packet."), NULL,
11921 NULL, /* FIXME: i18n: */
11922 &setlist, &showlist);
11924 init_all_packet_configs ();
11926 add_packet_config_cmd (&remote_protocol_packets[PACKET_X],
11927 "X", "binary-download", 1);
11929 add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont],
11930 "vCont", "verbose-resume", 0);
11932 add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals],
11933 "QPassSignals", "pass-signals", 0);
11935 add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals],
11936 "QProgramSignals", "program-signals", 0);
11938 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol],
11939 "qSymbol", "symbol-lookup", 0);
11941 add_packet_config_cmd (&remote_protocol_packets[PACKET_P],
11942 "P", "set-register", 1);
11944 add_packet_config_cmd (&remote_protocol_packets[PACKET_p],
11945 "p", "fetch-register", 1);
11947 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0],
11948 "Z0", "software-breakpoint", 0);
11950 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1],
11951 "Z1", "hardware-breakpoint", 0);
11953 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2],
11954 "Z2", "write-watchpoint", 0);
11956 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3],
11957 "Z3", "read-watchpoint", 0);
11959 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4],
11960 "Z4", "access-watchpoint", 0);
11962 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv],
11963 "qXfer:auxv:read", "read-aux-vector", 0);
11965 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features],
11966 "qXfer:features:read", "target-features", 0);
11968 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries],
11969 "qXfer:libraries:read", "library-info", 0);
11971 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4],
11972 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11974 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map],
11975 "qXfer:memory-map:read", "memory-map", 0);
11977 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read],
11978 "qXfer:spu:read", "read-spu-object", 0);
11980 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write],
11981 "qXfer:spu:write", "write-spu-object", 0);
11983 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata],
11984 "qXfer:osdata:read", "osdata", 0);
11986 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads],
11987 "qXfer:threads:read", "threads", 0);
11989 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read],
11990 "qXfer:siginfo:read", "read-siginfo-object", 0);
11992 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write],
11993 "qXfer:siginfo:write", "write-siginfo-object", 0);
11995 add_packet_config_cmd
11996 (&remote_protocol_packets[PACKET_qXfer_traceframe_info],
11997 "qXfer:traceframe-info:read", "traceframe-info", 0);
11999 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib],
12000 "qXfer:uib:read", "unwind-info-block", 0);
12002 add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr],
12003 "qGetTLSAddr", "get-thread-local-storage-address",
12006 add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr],
12007 "qGetTIBAddr", "get-thread-information-block-address",
12010 add_packet_config_cmd (&remote_protocol_packets[PACKET_bc],
12011 "bc", "reverse-continue", 0);
12013 add_packet_config_cmd (&remote_protocol_packets[PACKET_bs],
12014 "bs", "reverse-step", 0);
12016 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported],
12017 "qSupported", "supported-packets", 0);
12019 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory],
12020 "qSearch:memory", "search-memory", 0);
12022 add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus],
12023 "qTStatus", "trace-status", 0);
12025 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open],
12026 "vFile:open", "hostio-open", 0);
12028 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread],
12029 "vFile:pread", "hostio-pread", 0);
12031 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite],
12032 "vFile:pwrite", "hostio-pwrite", 0);
12034 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close],
12035 "vFile:close", "hostio-close", 0);
12037 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink],
12038 "vFile:unlink", "hostio-unlink", 0);
12040 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink],
12041 "vFile:readlink", "hostio-readlink", 0);
12043 add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach],
12044 "vAttach", "attach", 0);
12046 add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun],
12049 add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode],
12050 "QStartNoAckMode", "noack", 0);
12052 add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill],
12053 "vKill", "kill", 0);
12055 add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached],
12056 "qAttached", "query-attached", 0);
12058 add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints],
12059 "ConditionalTracepoints",
12060 "conditional-tracepoints", 0);
12062 add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints],
12063 "ConditionalBreakpoints",
12064 "conditional-breakpoints", 0);
12066 add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands],
12067 "BreakpointCommands",
12068 "breakpoint-commands", 0);
12070 add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints],
12071 "FastTracepoints", "fast-tracepoints", 0);
12073 add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource],
12074 "TracepointSource", "TracepointSource", 0);
12076 add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow],
12077 "QAllow", "allow", 0);
12079 add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints],
12080 "StaticTracepoints", "static-tracepoints", 0);
12082 add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace],
12083 "InstallInTrace", "install-in-trace", 0);
12085 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read],
12086 "qXfer:statictrace:read", "read-sdata-object", 0);
12088 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic],
12089 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12091 add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization],
12092 "QDisableRandomization", "disable-randomization", 0);
12094 add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent],
12095 "QAgent", "agent", 0);
12097 add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size],
12098 "QTBuffer:size", "trace-buffer-size", 0);
12100 add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off],
12101 "Qbtrace:off", "disable-btrace", 0);
12103 add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts],
12104 "Qbtrace:bts", "enable-btrace", 0);
12106 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace],
12107 "qXfer:btrace", "read-btrace", 0);
12109 /* Assert that we've registered commands for all packet configs. */
12113 for (i = 0; i < PACKET_MAX; i++)
12115 /* Ideally all configs would have a command associated. Some
12116 still don't though. */
12121 case PACKET_QNonStop:
12122 case PACKET_multiprocess_feature:
12123 case PACKET_EnableDisableTracepoints_feature:
12124 case PACKET_tracenz_feature:
12125 case PACKET_DisconnectedTracing_feature:
12126 case PACKET_augmented_libraries_svr4_read_feature:
12128 /* Additions to this list need to be well justified:
12129 pre-existing packets are OK; new packets are not. */
12137 /* This catches both forgetting to add a config command, and
12138 forgetting to remove a packet from the exception list. */
12139 gdb_assert (excepted == (remote_protocol_packets[i].name == NULL));
12143 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12144 Z sub-packet has its own set and show commands, but users may
12145 have sets to this variable in their .gdbinit files (or in their
12147 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure,
12148 &remote_Z_packet_detect, _("\
12149 Set use of remote protocol `Z' packets"), _("\
12150 Show use of remote protocol `Z' packets "), _("\
12151 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12153 set_remote_protocol_Z_packet_cmd,
12154 show_remote_protocol_Z_packet_cmd,
12155 /* FIXME: i18n: Use of remote protocol
12156 `Z' packets is %s. */
12157 &remote_set_cmdlist, &remote_show_cmdlist);
12159 add_prefix_cmd ("remote", class_files, remote_command, _("\
12160 Manipulate files on the remote system\n\
12161 Transfer files to and from the remote target system."),
12162 &remote_cmdlist, "remote ",
12163 0 /* allow-unknown */, &cmdlist);
12165 add_cmd ("put", class_files, remote_put_command,
12166 _("Copy a local file to the remote system."),
12169 add_cmd ("get", class_files, remote_get_command,
12170 _("Copy a remote file to the local system."),
12173 add_cmd ("delete", class_files, remote_delete_command,
12174 _("Delete a remote file."),
12177 remote_exec_file = xstrdup ("");
12178 add_setshow_string_noescape_cmd ("exec-file", class_files,
12179 &remote_exec_file, _("\
12180 Set the remote pathname for \"run\""), _("\
12181 Show the remote pathname for \"run\""), NULL, NULL, NULL,
12182 &remote_set_cmdlist, &remote_show_cmdlist);
12184 add_setshow_boolean_cmd ("range-stepping", class_run,
12185 &use_range_stepping, _("\
12186 Enable or disable range stepping."), _("\
12187 Show whether target-assisted range stepping is enabled."), _("\
12188 If on, and the target supports it, when stepping a source line, GDB\n\
12189 tells the target to step the corresponding range of addresses itself instead\n\
12190 of issuing multiple single-steps. This speeds up source level\n\
12191 stepping. If off, GDB always issues single-steps, even if range\n\
12192 stepping is supported by the target. The default is on."),
12193 set_range_stepping,
12194 show_range_stepping,
12198 /* Eventually initialize fileio. See fileio.c */
12199 initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist);
12201 /* Take advantage of the fact that the TID field is not used, to tag
12202 special ptids with it set to != 0. */
12203 magic_null_ptid = ptid_build (42000, -1, 1);
12204 not_sent_ptid = ptid_build (42000, -2, 1);
12205 any_thread_ptid = ptid_build (42000, 0, 1);
12207 target_buf_size = 2048;
12208 target_buf = xmalloc (target_buf_size);