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. */
30 /*#include "terminal.h" */
33 #include "gdb-stabs.h"
34 #include "gdbthread.h"
36 #include "remote-notif.h"
41 #include "cli/cli-decode.h"
42 #include "cli/cli-setshow.h"
43 #include "target-descriptions.h"
45 #include "filestuff.h"
50 #include "event-loop.h"
51 #include "event-top.h"
57 #include "gdbcore.h" /* for exec_bfd */
59 #include "remote-fileio.h"
60 #include "gdb/fileio.h"
62 #include "xml-support.h"
64 #include "memory-map.h"
66 #include "tracepoint.h"
72 /* Temp hacks for tracepoint encoding migration. */
73 static char *target_buf;
74 static long target_buf_size;
76 /* The size to align memory write packets, when practical. The protocol
77 does not guarantee any alignment, and gdb will generate short
78 writes and unaligned writes, but even as a best-effort attempt this
79 can improve bulk transfers. For instance, if a write is misaligned
80 relative to the target's data bus, the stub may need to make an extra
81 round trip fetching data from the target. This doesn't make a
82 huge difference, but it's easy to do, so we try to be helpful.
84 The alignment chosen is arbitrary; usually data bus width is
85 important here, not the possibly larger cache line size. */
86 enum { REMOTE_ALIGN_WRITES = 16 };
88 /* Prototypes for local functions. */
89 static void async_cleanup_sigint_signal_handler (void *dummy);
90 static int getpkt_sane (char **buf, long *sizeof_buf, int forever);
91 static int getpkt_or_notif_sane (char **buf, long *sizeof_buf,
92 int forever, int *is_notif);
94 static void async_handle_remote_sigint (int);
95 static void async_handle_remote_sigint_twice (int);
97 static void remote_files_info (struct target_ops *ignore);
99 static void remote_prepare_to_store (struct target_ops *self,
100 struct regcache *regcache);
102 static void remote_open_1 (const char *, int, struct target_ops *,
105 static void remote_close (struct target_ops *self);
107 static void remote_mourn (struct target_ops *ops);
109 static void extended_remote_restart (void);
111 static void extended_remote_mourn (struct target_ops *);
113 static void remote_mourn_1 (struct target_ops *);
115 static void remote_send (char **buf, long *sizeof_buf_p);
117 static int readchar (int timeout);
119 static void remote_serial_write (const char *str, int len);
121 static void remote_kill (struct target_ops *ops);
123 static int remote_can_async_p (struct target_ops *);
125 static int remote_is_async_p (struct target_ops *);
127 static void remote_async (struct target_ops *ops,
128 void (*callback) (enum inferior_event_type event_type,
132 static void sync_remote_interrupt_twice (int signo);
134 static void interrupt_query (void);
136 static void set_general_thread (struct ptid ptid);
137 static void set_continue_thread (struct ptid ptid);
139 static void get_offsets (void);
141 static void skip_frame (void);
143 static long read_frame (char **buf_p, long *sizeof_buf);
145 static int hexnumlen (ULONGEST num);
147 static void init_remote_ops (void);
149 static void init_extended_remote_ops (void);
151 static void remote_stop (struct target_ops *self, ptid_t);
153 static int stubhex (int ch);
155 static int hexnumstr (char *, ULONGEST);
157 static int hexnumnstr (char *, ULONGEST, int);
159 static CORE_ADDR remote_address_masked (CORE_ADDR);
161 static void print_packet (const char *);
163 static void compare_sections_command (char *, int);
165 static void packet_command (char *, int);
167 static int stub_unpack_int (char *buff, int fieldlength);
169 static ptid_t remote_current_thread (ptid_t oldptid);
171 static int putpkt_binary (const char *buf, int cnt);
173 static void check_binary_download (CORE_ADDR addr);
175 struct packet_config;
177 static void show_packet_config_cmd (struct packet_config *config);
179 static void show_remote_protocol_packet_cmd (struct ui_file *file,
181 struct cmd_list_element *c,
184 static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid);
185 static ptid_t read_ptid (char *buf, char **obuf);
187 static void remote_set_permissions (struct target_ops *self);
190 static int remote_get_trace_status (struct target_ops *self,
191 struct trace_status *ts);
193 static int remote_upload_tracepoints (struct target_ops *self,
194 struct uploaded_tp **utpp);
196 static int remote_upload_trace_state_variables (struct target_ops *self,
197 struct uploaded_tsv **utsvp);
199 static void remote_query_supported (void);
201 static void remote_check_symbols (void);
203 void _initialize_remote (void);
206 static void stop_reply_xfree (struct stop_reply *);
207 static void remote_parse_stop_reply (char *, struct stop_reply *);
208 static void push_stop_reply (struct stop_reply *);
209 static void discard_pending_stop_replies_in_queue (struct remote_state *);
210 static int peek_stop_reply (ptid_t ptid);
212 static void remote_async_inferior_event_handler (gdb_client_data);
214 static void remote_terminal_ours (struct target_ops *self);
216 static int remote_read_description_p (struct target_ops *target);
218 static void remote_console_output (char *msg);
220 static int remote_supports_cond_breakpoints (struct target_ops *self);
222 static int remote_can_run_breakpoint_commands (struct target_ops *self);
226 static struct cmd_list_element *remote_cmdlist;
228 /* For "set remote" and "show remote". */
230 static struct cmd_list_element *remote_set_cmdlist;
231 static struct cmd_list_element *remote_show_cmdlist;
233 /* Stub vCont actions support.
235 Each field is a boolean flag indicating whether the stub reports
236 support for the corresponding action. */
238 struct vCont_action_support
247 /* Controls whether GDB is willing to use range stepping. */
249 static int use_range_stepping = 1;
251 #define OPAQUETHREADBYTES 8
253 /* a 64 bit opaque identifier */
254 typedef unsigned char threadref[OPAQUETHREADBYTES];
256 /* About this many threadisds fit in a packet. */
258 #define MAXTHREADLISTRESULTS 32
260 /* Description of the remote protocol state for the currently
261 connected target. This is per-target state, and independent of the
262 selected architecture. */
266 /* A buffer to use for incoming packets, and its current size. The
267 buffer is grown dynamically for larger incoming packets.
268 Outgoing packets may also be constructed in this buffer.
269 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
270 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
275 /* True if we're going through initial connection setup (finding out
276 about the remote side's threads, relocating symbols, etc.). */
279 /* If we negotiated packet size explicitly (and thus can bypass
280 heuristics for the largest packet size that will not overflow
281 a buffer in the stub), this will be set to that packet size.
282 Otherwise zero, meaning to use the guessed size. */
283 long explicit_packet_size;
285 /* remote_wait is normally called when the target is running and
286 waits for a stop reply packet. But sometimes we need to call it
287 when the target is already stopped. We can send a "?" packet
288 and have remote_wait read the response. Or, if we already have
289 the response, we can stash it in BUF and tell remote_wait to
290 skip calling getpkt. This flag is set when BUF contains a
291 stop reply packet and the target is not waiting. */
292 int cached_wait_status;
294 /* True, if in no ack mode. That is, neither GDB nor the stub will
295 expect acks from each other. The connection is assumed to be
299 /* True if we're connected in extended remote mode. */
302 /* True if we resumed the target and we're waiting for the target to
303 stop. In the mean time, we can't start another command/query.
304 The remote server wouldn't be ready to process it, so we'd
305 timeout waiting for a reply that would never come and eventually
306 we'd close the connection. This can happen in asynchronous mode
307 because we allow GDB commands while the target is running. */
308 int waiting_for_stop_reply;
310 /* The status of the stub support for the various vCont actions. */
311 struct vCont_action_support supports_vCont;
313 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
314 responded to that. */
317 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
318 remote_open knows that we don't have a file open when the program
320 struct serial *remote_desc;
322 /* These are the threads which we last sent to the remote system. The
323 TID member will be -1 for all or -2 for not sent yet. */
324 ptid_t general_thread;
325 ptid_t continue_thread;
327 /* This is the traceframe which we last selected on the remote system.
328 It will be -1 if no traceframe is selected. */
329 int remote_traceframe_number;
331 char *last_pass_packet;
333 /* The last QProgramSignals packet sent to the target. We bypass
334 sending a new program signals list down to the target if the new
335 packet is exactly the same as the last we sent. IOW, we only let
336 the target know about program signals list changes. */
337 char *last_program_signals_packet;
339 enum gdb_signal last_sent_signal;
343 char *finished_object;
344 char *finished_annex;
345 ULONGEST finished_offset;
347 /* Should we try the 'ThreadInfo' query packet?
349 This variable (NOT available to the user: auto-detect only!)
350 determines whether GDB will use the new, simpler "ThreadInfo"
351 query or the older, more complex syntax for thread queries.
352 This is an auto-detect variable (set to true at each connect,
353 and set to false when the target fails to recognize it). */
354 int use_threadinfo_query;
355 int use_threadextra_query;
357 void (*async_client_callback) (enum inferior_event_type event_type,
359 void *async_client_context;
361 /* This is set to the data address of the access causing the target
362 to stop for a watchpoint. */
363 CORE_ADDR remote_watch_data_address;
365 /* This is non-zero if target stopped for a watchpoint. */
366 int remote_stopped_by_watchpoint_p;
368 threadref echo_nextthread;
369 threadref nextthread;
370 threadref resultthreadlist[MAXTHREADLISTRESULTS];
372 /* The state of remote notification. */
373 struct remote_notif_state *notif_state;
376 /* Private data that we'll store in (struct thread_info)->private. */
377 struct private_thread_info
384 free_private_thread_info (struct private_thread_info *info)
390 /* This data could be associated with a target, but we do not always
391 have access to the current target when we need it, so for now it is
392 static. This will be fine for as long as only one target is in use
394 static struct remote_state *remote_state;
396 static struct remote_state *
397 get_remote_state_raw (void)
402 /* Allocate a new struct remote_state with xmalloc, initialize it, and
405 static struct remote_state *
406 new_remote_state (void)
408 struct remote_state *result = XCNEW (struct remote_state);
410 /* The default buffer size is unimportant; it will be expanded
411 whenever a larger buffer is needed. */
412 result->buf_size = 400;
413 result->buf = xmalloc (result->buf_size);
414 result->remote_traceframe_number = -1;
415 result->last_sent_signal = GDB_SIGNAL_0;
420 /* Description of the remote protocol for a given architecture. */
424 long offset; /* Offset into G packet. */
425 long regnum; /* GDB's internal register number. */
426 LONGEST pnum; /* Remote protocol register number. */
427 int in_g_packet; /* Always part of G packet. */
428 /* long size in bytes; == register_size (target_gdbarch (), regnum);
430 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
434 struct remote_arch_state
436 /* Description of the remote protocol registers. */
437 long sizeof_g_packet;
439 /* Description of the remote protocol registers indexed by REGNUM
440 (making an array gdbarch_num_regs in size). */
441 struct packet_reg *regs;
443 /* This is the size (in chars) of the first response to the ``g''
444 packet. It is used as a heuristic when determining the maximum
445 size of memory-read and memory-write packets. A target will
446 typically only reserve a buffer large enough to hold the ``g''
447 packet. The size does not include packet overhead (headers and
449 long actual_register_packet_size;
451 /* This is the maximum size (in chars) of a non read/write packet.
452 It is also used as a cap on the size of read/write packets. */
453 long remote_packet_size;
456 /* Utility: generate error from an incoming stub packet. */
458 trace_error (char *buf)
461 return; /* not an error msg */
464 case '1': /* malformed packet error */
465 if (*++buf == '0') /* general case: */
466 error (_("remote.c: error in outgoing packet."));
468 error (_("remote.c: error in outgoing packet at field #%ld."),
469 strtol (buf, NULL, 16));
471 error (_("Target returns error code '%s'."), buf);
475 /* Utility: wait for reply from stub, while accepting "O" packets. */
477 remote_get_noisy_reply (char **buf_p,
480 do /* Loop on reply from remote stub. */
484 QUIT; /* Allow user to bail out with ^C. */
485 getpkt (buf_p, sizeof_buf, 0);
489 else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
492 CORE_ADDR from, to, org_to;
494 int adjusted_size = 0;
495 volatile struct gdb_exception ex;
497 p = buf + strlen ("qRelocInsn:");
498 pp = unpack_varlen_hex (p, &ul);
500 error (_("invalid qRelocInsn packet: %s"), buf);
504 unpack_varlen_hex (p, &ul);
509 TRY_CATCH (ex, RETURN_MASK_ALL)
511 gdbarch_relocate_instruction (target_gdbarch (), &to, from);
515 adjusted_size = to - org_to;
517 xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size);
520 else if (ex.reason < 0 && ex.error == MEMORY_ERROR)
522 /* Propagate memory errors silently back to the target.
523 The stub may have limited the range of addresses we
524 can write to, for example. */
529 /* Something unexpectedly bad happened. Be verbose so
530 we can tell what, and propagate the error back to the
531 stub, so it doesn't get stuck waiting for a
533 exception_fprintf (gdb_stderr, ex,
534 _("warning: relocating instruction: "));
538 else if (buf[0] == 'O' && buf[1] != 'K')
539 remote_console_output (buf + 1); /* 'O' message from stub */
541 return buf; /* Here's the actual reply. */
546 /* Handle for retreving the remote protocol data from gdbarch. */
547 static struct gdbarch_data *remote_gdbarch_data_handle;
549 static struct remote_arch_state *
550 get_remote_arch_state (void)
552 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle);
555 /* Fetch the global remote target state. */
557 static struct remote_state *
558 get_remote_state (void)
560 /* Make sure that the remote architecture state has been
561 initialized, because doing so might reallocate rs->buf. Any
562 function which calls getpkt also needs to be mindful of changes
563 to rs->buf, but this call limits the number of places which run
565 get_remote_arch_state ();
567 return get_remote_state_raw ();
571 compare_pnums (const void *lhs_, const void *rhs_)
573 const struct packet_reg * const *lhs = lhs_;
574 const struct packet_reg * const *rhs = rhs_;
576 if ((*lhs)->pnum < (*rhs)->pnum)
578 else if ((*lhs)->pnum == (*rhs)->pnum)
585 map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs)
587 int regnum, num_remote_regs, offset;
588 struct packet_reg **remote_regs;
590 for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++)
592 struct packet_reg *r = ®s[regnum];
594 if (register_size (gdbarch, regnum) == 0)
595 /* Do not try to fetch zero-sized (placeholder) registers. */
598 r->pnum = gdbarch_remote_register_number (gdbarch, regnum);
603 /* Define the g/G packet format as the contents of each register
604 with a remote protocol number, in order of ascending protocol
607 remote_regs = alloca (gdbarch_num_regs (gdbarch)
608 * sizeof (struct packet_reg *));
609 for (num_remote_regs = 0, regnum = 0;
610 regnum < gdbarch_num_regs (gdbarch);
612 if (regs[regnum].pnum != -1)
613 remote_regs[num_remote_regs++] = ®s[regnum];
615 qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *),
618 for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++)
620 remote_regs[regnum]->in_g_packet = 1;
621 remote_regs[regnum]->offset = offset;
622 offset += register_size (gdbarch, remote_regs[regnum]->regnum);
628 /* Given the architecture described by GDBARCH, return the remote
629 protocol register's number and the register's offset in the g/G
630 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
631 If the target does not have a mapping for REGNUM, return false,
632 otherwise, return true. */
635 remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum,
636 int *pnum, int *poffset)
639 struct packet_reg *regs;
640 struct cleanup *old_chain;
642 gdb_assert (regnum < gdbarch_num_regs (gdbarch));
644 regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg));
645 old_chain = make_cleanup (xfree, regs);
647 sizeof_g_packet = map_regcache_remote_table (gdbarch, regs);
649 *pnum = regs[regnum].pnum;
650 *poffset = regs[regnum].offset;
652 do_cleanups (old_chain);
658 init_remote_state (struct gdbarch *gdbarch)
660 struct remote_state *rs = get_remote_state_raw ();
661 struct remote_arch_state *rsa;
663 rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state);
665 /* Use the architecture to build a regnum<->pnum table, which will be
666 1:1 unless a feature set specifies otherwise. */
667 rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch,
668 gdbarch_num_regs (gdbarch),
671 /* Record the maximum possible size of the g packet - it may turn out
673 rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs);
675 /* Default maximum number of characters in a packet body. Many
676 remote stubs have a hardwired buffer size of 400 bytes
677 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
678 as the maximum packet-size to ensure that the packet and an extra
679 NUL character can always fit in the buffer. This stops GDB
680 trashing stubs that try to squeeze an extra NUL into what is
681 already a full buffer (As of 1999-12-04 that was most stubs). */
682 rsa->remote_packet_size = 400 - 1;
684 /* This one is filled in when a ``g'' packet is received. */
685 rsa->actual_register_packet_size = 0;
687 /* Should rsa->sizeof_g_packet needs more space than the
688 default, adjust the size accordingly. Remember that each byte is
689 encoded as two characters. 32 is the overhead for the packet
690 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
691 (``$NN:G...#NN'') is a better guess, the below has been padded a
693 if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2))
694 rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32);
696 /* Make sure that the packet buffer is plenty big enough for
697 this architecture. */
698 if (rs->buf_size < rsa->remote_packet_size)
700 rs->buf_size = 2 * rsa->remote_packet_size;
701 rs->buf = xrealloc (rs->buf, rs->buf_size);
707 /* Return the current allowed size of a remote packet. This is
708 inferred from the current architecture, and should be used to
709 limit the length of outgoing packets. */
711 get_remote_packet_size (void)
713 struct remote_state *rs = get_remote_state ();
714 struct remote_arch_state *rsa = get_remote_arch_state ();
716 if (rs->explicit_packet_size)
717 return rs->explicit_packet_size;
719 return rsa->remote_packet_size;
722 static struct packet_reg *
723 packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum)
725 if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ()))
729 struct packet_reg *r = &rsa->regs[regnum];
731 gdb_assert (r->regnum == regnum);
736 static struct packet_reg *
737 packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum)
741 for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++)
743 struct packet_reg *r = &rsa->regs[i];
751 static struct target_ops remote_ops;
753 static struct target_ops extended_remote_ops;
755 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
756 ``forever'' still use the normal timeout mechanism. This is
757 currently used by the ASYNC code to guarentee that target reads
758 during the initial connect always time-out. Once getpkt has been
759 modified to return a timeout indication and, in turn
760 remote_wait()/wait_for_inferior() have gained a timeout parameter
762 static int wait_forever_enabled_p = 1;
764 /* Allow the user to specify what sequence to send to the remote
765 when he requests a program interruption: Although ^C is usually
766 what remote systems expect (this is the default, here), it is
767 sometimes preferable to send a break. On other systems such
768 as the Linux kernel, a break followed by g, which is Magic SysRq g
769 is required in order to interrupt the execution. */
770 const char interrupt_sequence_control_c[] = "Ctrl-C";
771 const char interrupt_sequence_break[] = "BREAK";
772 const char interrupt_sequence_break_g[] = "BREAK-g";
773 static const char *const interrupt_sequence_modes[] =
775 interrupt_sequence_control_c,
776 interrupt_sequence_break,
777 interrupt_sequence_break_g,
780 static const char *interrupt_sequence_mode = interrupt_sequence_control_c;
783 show_interrupt_sequence (struct ui_file *file, int from_tty,
784 struct cmd_list_element *c,
787 if (interrupt_sequence_mode == interrupt_sequence_control_c)
788 fprintf_filtered (file,
789 _("Send the ASCII ETX character (Ctrl-c) "
790 "to the remote target to interrupt the "
791 "execution of the program.\n"));
792 else if (interrupt_sequence_mode == interrupt_sequence_break)
793 fprintf_filtered (file,
794 _("send a break signal to the remote target "
795 "to interrupt the execution of the program.\n"));
796 else if (interrupt_sequence_mode == interrupt_sequence_break_g)
797 fprintf_filtered (file,
798 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
799 "the remote target to interrupt the execution "
800 "of Linux kernel.\n"));
802 internal_error (__FILE__, __LINE__,
803 _("Invalid value for interrupt_sequence_mode: %s."),
804 interrupt_sequence_mode);
807 /* This boolean variable specifies whether interrupt_sequence is sent
808 to the remote target when gdb connects to it.
809 This is mostly needed when you debug the Linux kernel: The Linux kernel
810 expects BREAK g which is Magic SysRq g for connecting gdb. */
811 static int interrupt_on_connect = 0;
813 /* This variable is used to implement the "set/show remotebreak" commands.
814 Since these commands are now deprecated in favor of "set/show remote
815 interrupt-sequence", it no longer has any effect on the code. */
816 static int remote_break;
819 set_remotebreak (char *args, int from_tty, struct cmd_list_element *c)
822 interrupt_sequence_mode = interrupt_sequence_break;
824 interrupt_sequence_mode = interrupt_sequence_control_c;
828 show_remotebreak (struct ui_file *file, int from_tty,
829 struct cmd_list_element *c,
834 /* This variable sets the number of bits in an address that are to be
835 sent in a memory ("M" or "m") packet. Normally, after stripping
836 leading zeros, the entire address would be sent. This variable
837 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
838 initial implementation of remote.c restricted the address sent in
839 memory packets to ``host::sizeof long'' bytes - (typically 32
840 bits). Consequently, for 64 bit targets, the upper 32 bits of an
841 address was never sent. Since fixing this bug may cause a break in
842 some remote targets this variable is principly provided to
843 facilitate backward compatibility. */
845 static unsigned int remote_address_size;
847 /* Temporary to track who currently owns the terminal. See
848 remote_terminal_* for more details. */
850 static int remote_async_terminal_ours_p;
852 /* The executable file to use for "run" on the remote side. */
854 static char *remote_exec_file = "";
857 /* User configurable variables for the number of characters in a
858 memory read/write packet. MIN (rsa->remote_packet_size,
859 rsa->sizeof_g_packet) is the default. Some targets need smaller
860 values (fifo overruns, et.al.) and some users need larger values
861 (speed up transfers). The variables ``preferred_*'' (the user
862 request), ``current_*'' (what was actually set) and ``forced_*''
863 (Positive - a soft limit, negative - a hard limit). */
865 struct memory_packet_config
872 /* Compute the current size of a read/write packet. Since this makes
873 use of ``actual_register_packet_size'' the computation is dynamic. */
876 get_memory_packet_size (struct memory_packet_config *config)
878 struct remote_state *rs = get_remote_state ();
879 struct remote_arch_state *rsa = get_remote_arch_state ();
881 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
882 law?) that some hosts don't cope very well with large alloca()
883 calls. Eventually the alloca() code will be replaced by calls to
884 xmalloc() and make_cleanups() allowing this restriction to either
885 be lifted or removed. */
886 #ifndef MAX_REMOTE_PACKET_SIZE
887 #define MAX_REMOTE_PACKET_SIZE 16384
889 /* NOTE: 20 ensures we can write at least one byte. */
890 #ifndef MIN_REMOTE_PACKET_SIZE
891 #define MIN_REMOTE_PACKET_SIZE 20
896 if (config->size <= 0)
897 what_they_get = MAX_REMOTE_PACKET_SIZE;
899 what_they_get = config->size;
903 what_they_get = get_remote_packet_size ();
904 /* Limit the packet to the size specified by the user. */
906 && what_they_get > config->size)
907 what_they_get = config->size;
909 /* Limit it to the size of the targets ``g'' response unless we have
910 permission from the stub to use a larger packet size. */
911 if (rs->explicit_packet_size == 0
912 && rsa->actual_register_packet_size > 0
913 && what_they_get > rsa->actual_register_packet_size)
914 what_they_get = rsa->actual_register_packet_size;
916 if (what_they_get > MAX_REMOTE_PACKET_SIZE)
917 what_they_get = MAX_REMOTE_PACKET_SIZE;
918 if (what_they_get < MIN_REMOTE_PACKET_SIZE)
919 what_they_get = MIN_REMOTE_PACKET_SIZE;
921 /* Make sure there is room in the global buffer for this packet
922 (including its trailing NUL byte). */
923 if (rs->buf_size < what_they_get + 1)
925 rs->buf_size = 2 * what_they_get;
926 rs->buf = xrealloc (rs->buf, 2 * what_they_get);
929 return what_they_get;
932 /* Update the size of a read/write packet. If they user wants
933 something really big then do a sanity check. */
936 set_memory_packet_size (char *args, struct memory_packet_config *config)
938 int fixed_p = config->fixed_p;
939 long size = config->size;
942 error (_("Argument required (integer, `fixed' or `limited')."));
943 else if (strcmp (args, "hard") == 0
944 || strcmp (args, "fixed") == 0)
946 else if (strcmp (args, "soft") == 0
947 || strcmp (args, "limit") == 0)
953 size = strtoul (args, &end, 0);
955 error (_("Invalid %s (bad syntax)."), config->name);
957 /* Instead of explicitly capping the size of a packet to
958 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
959 instead allowed to set the size to something arbitrarily
961 if (size > MAX_REMOTE_PACKET_SIZE)
962 error (_("Invalid %s (too large)."), config->name);
966 if (fixed_p && !config->fixed_p)
968 if (! query (_("The target may not be able to correctly handle a %s\n"
969 "of %ld bytes. Change the packet size? "),
971 error (_("Packet size not changed."));
973 /* Update the config. */
974 config->fixed_p = fixed_p;
979 show_memory_packet_size (struct memory_packet_config *config)
981 printf_filtered (_("The %s is %ld. "), config->name, config->size);
983 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
984 get_memory_packet_size (config));
986 printf_filtered (_("Packets are limited to %ld bytes.\n"),
987 get_memory_packet_size (config));
990 static struct memory_packet_config memory_write_packet_config =
992 "memory-write-packet-size",
996 set_memory_write_packet_size (char *args, int from_tty)
998 set_memory_packet_size (args, &memory_write_packet_config);
1002 show_memory_write_packet_size (char *args, int from_tty)
1004 show_memory_packet_size (&memory_write_packet_config);
1008 get_memory_write_packet_size (void)
1010 return get_memory_packet_size (&memory_write_packet_config);
1013 static struct memory_packet_config memory_read_packet_config =
1015 "memory-read-packet-size",
1019 set_memory_read_packet_size (char *args, int from_tty)
1021 set_memory_packet_size (args, &memory_read_packet_config);
1025 show_memory_read_packet_size (char *args, int from_tty)
1027 show_memory_packet_size (&memory_read_packet_config);
1031 get_memory_read_packet_size (void)
1033 long size = get_memory_packet_size (&memory_read_packet_config);
1035 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1036 extra buffer size argument before the memory read size can be
1037 increased beyond this. */
1038 if (size > get_remote_packet_size ())
1039 size = get_remote_packet_size ();
1044 /* Generic configuration support for packets the stub optionally
1045 supports. Allows the user to specify the use of the packet as well
1046 as allowing GDB to auto-detect support in the remote stub. */
1050 PACKET_SUPPORT_UNKNOWN = 0,
1055 struct packet_config
1060 /* If auto, GDB auto-detects support for this packet or feature,
1061 either through qSupported, or by trying the packet and looking
1062 at the response. If true, GDB assumes the target supports this
1063 packet. If false, the packet is disabled. Configs that don't
1064 have an associated command always have this set to auto. */
1065 enum auto_boolean detect;
1067 /* Does the target support this packet? */
1068 enum packet_support support;
1071 /* Analyze a packet's return value and update the packet config
1081 static enum packet_support packet_config_support (struct packet_config *config);
1082 static enum packet_support packet_support (int packet);
1085 show_packet_config_cmd (struct packet_config *config)
1087 char *support = "internal-error";
1089 switch (packet_config_support (config))
1092 support = "enabled";
1094 case PACKET_DISABLE:
1095 support = "disabled";
1097 case PACKET_SUPPORT_UNKNOWN:
1098 support = "unknown";
1101 switch (config->detect)
1103 case AUTO_BOOLEAN_AUTO:
1104 printf_filtered (_("Support for the `%s' packet "
1105 "is auto-detected, currently %s.\n"),
1106 config->name, support);
1108 case AUTO_BOOLEAN_TRUE:
1109 case AUTO_BOOLEAN_FALSE:
1110 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1111 config->name, support);
1117 add_packet_config_cmd (struct packet_config *config, const char *name,
1118 const char *title, int legacy)
1124 config->name = name;
1125 config->title = title;
1126 set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1128 show_doc = xstrprintf ("Show current use of remote "
1129 "protocol `%s' (%s) packet",
1131 /* set/show TITLE-packet {auto,on,off} */
1132 cmd_name = xstrprintf ("%s-packet", title);
1133 add_setshow_auto_boolean_cmd (cmd_name, class_obscure,
1134 &config->detect, set_doc,
1135 show_doc, NULL, /* help_doc */
1137 show_remote_protocol_packet_cmd,
1138 &remote_set_cmdlist, &remote_show_cmdlist);
1139 /* The command code copies the documentation strings. */
1142 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1147 legacy_name = xstrprintf ("%s-packet", name);
1148 add_alias_cmd (legacy_name, cmd_name, class_obscure, 0,
1149 &remote_set_cmdlist);
1150 add_alias_cmd (legacy_name, cmd_name, class_obscure, 0,
1151 &remote_show_cmdlist);
1155 static enum packet_result
1156 packet_check_result (const char *buf)
1160 /* The stub recognized the packet request. Check that the
1161 operation succeeded. */
1163 && isxdigit (buf[1]) && isxdigit (buf[2])
1165 /* "Enn" - definitly an error. */
1166 return PACKET_ERROR;
1168 /* Always treat "E." as an error. This will be used for
1169 more verbose error messages, such as E.memtypes. */
1170 if (buf[0] == 'E' && buf[1] == '.')
1171 return PACKET_ERROR;
1173 /* The packet may or may not be OK. Just assume it is. */
1177 /* The stub does not support the packet. */
1178 return PACKET_UNKNOWN;
1181 static enum packet_result
1182 packet_ok (const char *buf, struct packet_config *config)
1184 enum packet_result result;
1186 if (config->detect != AUTO_BOOLEAN_TRUE
1187 && config->support == PACKET_DISABLE)
1188 internal_error (__FILE__, __LINE__,
1189 _("packet_ok: attempt to use a disabled packet"));
1191 result = packet_check_result (buf);
1196 /* The stub recognized the packet request. */
1197 if (config->support == PACKET_SUPPORT_UNKNOWN)
1200 fprintf_unfiltered (gdb_stdlog,
1201 "Packet %s (%s) is supported\n",
1202 config->name, config->title);
1203 config->support = PACKET_ENABLE;
1206 case PACKET_UNKNOWN:
1207 /* The stub does not support the packet. */
1208 if (config->detect == AUTO_BOOLEAN_AUTO
1209 && config->support == PACKET_ENABLE)
1211 /* If the stub previously indicated that the packet was
1212 supported then there is a protocol error. */
1213 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1214 config->name, config->title);
1216 else if (config->detect == AUTO_BOOLEAN_TRUE)
1218 /* The user set it wrong. */
1219 error (_("Enabled packet %s (%s) not recognized by stub"),
1220 config->name, config->title);
1224 fprintf_unfiltered (gdb_stdlog,
1225 "Packet %s (%s) is NOT supported\n",
1226 config->name, config->title);
1227 config->support = PACKET_DISABLE;
1247 PACKET_vFile_pwrite,
1249 PACKET_vFile_unlink,
1250 PACKET_vFile_readlink,
1252 PACKET_qXfer_features,
1253 PACKET_qXfer_libraries,
1254 PACKET_qXfer_libraries_svr4,
1255 PACKET_qXfer_memory_map,
1256 PACKET_qXfer_spu_read,
1257 PACKET_qXfer_spu_write,
1258 PACKET_qXfer_osdata,
1259 PACKET_qXfer_threads,
1260 PACKET_qXfer_statictrace_read,
1261 PACKET_qXfer_traceframe_info,
1267 PACKET_QPassSignals,
1268 PACKET_QProgramSignals,
1270 PACKET_qSearch_memory,
1273 PACKET_QStartNoAckMode,
1275 PACKET_qXfer_siginfo_read,
1276 PACKET_qXfer_siginfo_write,
1279 /* Support for conditional tracepoints. */
1280 PACKET_ConditionalTracepoints,
1282 /* Support for target-side breakpoint conditions. */
1283 PACKET_ConditionalBreakpoints,
1285 /* Support for target-side breakpoint commands. */
1286 PACKET_BreakpointCommands,
1288 /* Support for fast tracepoints. */
1289 PACKET_FastTracepoints,
1291 /* Support for static tracepoints. */
1292 PACKET_StaticTracepoints,
1294 /* Support for installing tracepoints while a trace experiment is
1296 PACKET_InstallInTrace,
1300 PACKET_TracepointSource,
1303 PACKET_QDisableRandomization,
1305 PACKET_QTBuffer_size,
1308 PACKET_qXfer_btrace,
1310 /* Support for the QNonStop packet. */
1313 /* Support for multi-process extensions. */
1314 PACKET_multiprocess_feature,
1316 /* Support for enabling and disabling tracepoints while a trace
1317 experiment is running. */
1318 PACKET_EnableDisableTracepoints_feature,
1320 /* Support for collecting strings using the tracenz bytecode. */
1321 PACKET_tracenz_feature,
1323 /* Support for continuing to run a trace experiment while GDB is
1325 PACKET_DisconnectedTracing_feature,
1327 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1328 PACKET_augmented_libraries_svr4_read_feature,
1333 static struct packet_config remote_protocol_packets[PACKET_MAX];
1335 /* Returns whether a given packet or feature is supported. This takes
1336 into account the state of the corresponding "set remote foo-packet"
1337 command, which may be used to bypass auto-detection. */
1339 static enum packet_support
1340 packet_config_support (struct packet_config *config)
1342 switch (config->detect)
1344 case AUTO_BOOLEAN_TRUE:
1345 return PACKET_ENABLE;
1346 case AUTO_BOOLEAN_FALSE:
1347 return PACKET_DISABLE;
1348 case AUTO_BOOLEAN_AUTO:
1349 return config->support;
1351 gdb_assert_not_reached (_("bad switch"));
1355 /* Same as packet_config_support, but takes the packet's enum value as
1358 static enum packet_support
1359 packet_support (int packet)
1361 struct packet_config *config = &remote_protocol_packets[packet];
1363 return packet_config_support (config);
1367 show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty,
1368 struct cmd_list_element *c,
1371 struct packet_config *packet;
1373 for (packet = remote_protocol_packets;
1374 packet < &remote_protocol_packets[PACKET_MAX];
1377 if (&packet->detect == c->var)
1379 show_packet_config_cmd (packet);
1383 internal_error (__FILE__, __LINE__, _("Could not find config for %s"),
1387 /* Should we try one of the 'Z' requests? */
1391 Z_PACKET_SOFTWARE_BP,
1392 Z_PACKET_HARDWARE_BP,
1399 /* For compatibility with older distributions. Provide a ``set remote
1400 Z-packet ...'' command that updates all the Z packet types. */
1402 static enum auto_boolean remote_Z_packet_detect;
1405 set_remote_protocol_Z_packet_cmd (char *args, int from_tty,
1406 struct cmd_list_element *c)
1410 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
1411 remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect;
1415 show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty,
1416 struct cmd_list_element *c,
1421 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
1423 show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]);
1427 /* Returns true if the multi-process extensions are in effect. */
1430 remote_multi_process_p (struct remote_state *rs)
1432 return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE;
1435 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1436 static struct async_signal_handler *async_sigint_remote_twice_token;
1437 static struct async_signal_handler *async_sigint_remote_token;
1440 /* Asynchronous signal handle registered as event loop source for
1441 when we have pending events ready to be passed to the core. */
1443 static struct async_event_handler *remote_async_inferior_event_token;
1447 static ptid_t magic_null_ptid;
1448 static ptid_t not_sent_ptid;
1449 static ptid_t any_thread_ptid;
1451 /* Find out if the stub attached to PID (and hence GDB should offer to
1452 detach instead of killing it when bailing out). */
1455 remote_query_attached (int pid)
1457 struct remote_state *rs = get_remote_state ();
1458 size_t size = get_remote_packet_size ();
1460 if (packet_support (PACKET_qAttached) == PACKET_DISABLE)
1463 if (remote_multi_process_p (rs))
1464 xsnprintf (rs->buf, size, "qAttached:%x", pid);
1466 xsnprintf (rs->buf, size, "qAttached");
1469 getpkt (&rs->buf, &rs->buf_size, 0);
1471 switch (packet_ok (rs->buf,
1472 &remote_protocol_packets[PACKET_qAttached]))
1475 if (strcmp (rs->buf, "1") == 0)
1479 warning (_("Remote failure reply: %s"), rs->buf);
1481 case PACKET_UNKNOWN:
1488 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1489 has been invented by GDB, instead of reported by the target. Since
1490 we can be connected to a remote system before before knowing about
1491 any inferior, mark the target with execution when we find the first
1492 inferior. If ATTACHED is 1, then we had just attached to this
1493 inferior. If it is 0, then we just created this inferior. If it
1494 is -1, then try querying the remote stub to find out if it had
1495 attached to the inferior or not. */
1497 static struct inferior *
1498 remote_add_inferior (int fake_pid_p, int pid, int attached)
1500 struct inferior *inf;
1502 /* Check whether this process we're learning about is to be
1503 considered attached, or if is to be considered to have been
1504 spawned by the stub. */
1506 attached = remote_query_attached (pid);
1508 if (gdbarch_has_global_solist (target_gdbarch ()))
1510 /* If the target shares code across all inferiors, then every
1511 attach adds a new inferior. */
1512 inf = add_inferior (pid);
1514 /* ... and every inferior is bound to the same program space.
1515 However, each inferior may still have its own address
1517 inf->aspace = maybe_new_address_space ();
1518 inf->pspace = current_program_space;
1522 /* In the traditional debugging scenario, there's a 1-1 match
1523 between program/address spaces. We simply bind the inferior
1524 to the program space's address space. */
1525 inf = current_inferior ();
1526 inferior_appeared (inf, pid);
1529 inf->attach_flag = attached;
1530 inf->fake_pid_p = fake_pid_p;
1535 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1536 according to RUNNING. */
1539 remote_add_thread (ptid_t ptid, int running)
1541 struct remote_state *rs = get_remote_state ();
1543 /* GDB historically didn't pull threads in the initial connection
1544 setup. If the remote target doesn't even have a concept of
1545 threads (e.g., a bare-metal target), even if internally we
1546 consider that a single-threaded target, mentioning a new thread
1547 might be confusing to the user. Be silent then, preserving the
1548 age old behavior. */
1549 if (rs->starting_up)
1550 add_thread_silent (ptid);
1554 set_executing (ptid, running);
1555 set_running (ptid, running);
1558 /* Come here when we learn about a thread id from the remote target.
1559 It may be the first time we hear about such thread, so take the
1560 opportunity to add it to GDB's thread list. In case this is the
1561 first time we're noticing its corresponding inferior, add it to
1562 GDB's inferior list as well. */
1565 remote_notice_new_inferior (ptid_t currthread, int running)
1567 /* If this is a new thread, add it to GDB's thread list.
1568 If we leave it up to WFI to do this, bad things will happen. */
1570 if (in_thread_list (currthread) && is_exited (currthread))
1572 /* We're seeing an event on a thread id we knew had exited.
1573 This has to be a new thread reusing the old id. Add it. */
1574 remote_add_thread (currthread, running);
1578 if (!in_thread_list (currthread))
1580 struct inferior *inf = NULL;
1581 int pid = ptid_get_pid (currthread);
1583 if (ptid_is_pid (inferior_ptid)
1584 && pid == ptid_get_pid (inferior_ptid))
1586 /* inferior_ptid has no thread member yet. This can happen
1587 with the vAttach -> remote_wait,"TAAthread:" path if the
1588 stub doesn't support qC. This is the first stop reported
1589 after an attach, so this is the main thread. Update the
1590 ptid in the thread list. */
1591 if (in_thread_list (pid_to_ptid (pid)))
1592 thread_change_ptid (inferior_ptid, currthread);
1595 remote_add_thread (currthread, running);
1596 inferior_ptid = currthread;
1601 if (ptid_equal (magic_null_ptid, inferior_ptid))
1603 /* inferior_ptid is not set yet. This can happen with the
1604 vRun -> remote_wait,"TAAthread:" path if the stub
1605 doesn't support qC. This is the first stop reported
1606 after an attach, so this is the main thread. Update the
1607 ptid in the thread list. */
1608 thread_change_ptid (inferior_ptid, currthread);
1612 /* When connecting to a target remote, or to a target
1613 extended-remote which already was debugging an inferior, we
1614 may not know about it yet. Add it before adding its child
1615 thread, so notifications are emitted in a sensible order. */
1616 if (!in_inferior_list (ptid_get_pid (currthread)))
1618 struct remote_state *rs = get_remote_state ();
1619 int fake_pid_p = !remote_multi_process_p (rs);
1621 inf = remote_add_inferior (fake_pid_p,
1622 ptid_get_pid (currthread), -1);
1625 /* This is really a new thread. Add it. */
1626 remote_add_thread (currthread, running);
1628 /* If we found a new inferior, let the common code do whatever
1629 it needs to with it (e.g., read shared libraries, insert
1630 breakpoints), unless we're just setting up an all-stop
1634 struct remote_state *rs = get_remote_state ();
1636 if (non_stop || !rs->starting_up)
1637 notice_new_inferior (currthread, running, 0);
1642 /* Return the private thread data, creating it if necessary. */
1644 static struct private_thread_info *
1645 demand_private_info (ptid_t ptid)
1647 struct thread_info *info = find_thread_ptid (ptid);
1653 info->private = xmalloc (sizeof (*(info->private)));
1654 info->private_dtor = free_private_thread_info;
1655 info->private->core = -1;
1656 info->private->extra = 0;
1659 return info->private;
1662 /* Call this function as a result of
1663 1) A halt indication (T packet) containing a thread id
1664 2) A direct query of currthread
1665 3) Successful execution of set thread */
1668 record_currthread (struct remote_state *rs, ptid_t currthread)
1670 rs->general_thread = currthread;
1673 /* If 'QPassSignals' is supported, tell the remote stub what signals
1674 it can simply pass through to the inferior without reporting. */
1677 remote_pass_signals (struct target_ops *self,
1678 int numsigs, unsigned char *pass_signals)
1680 if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE)
1682 char *pass_packet, *p;
1684 struct remote_state *rs = get_remote_state ();
1686 gdb_assert (numsigs < 256);
1687 for (i = 0; i < numsigs; i++)
1689 if (pass_signals[i])
1692 pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1);
1693 strcpy (pass_packet, "QPassSignals:");
1694 p = pass_packet + strlen (pass_packet);
1695 for (i = 0; i < numsigs; i++)
1697 if (pass_signals[i])
1700 *p++ = tohex (i >> 4);
1701 *p++ = tohex (i & 15);
1710 if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet))
1712 putpkt (pass_packet);
1713 getpkt (&rs->buf, &rs->buf_size, 0);
1714 packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]);
1715 if (rs->last_pass_packet)
1716 xfree (rs->last_pass_packet);
1717 rs->last_pass_packet = pass_packet;
1720 xfree (pass_packet);
1724 /* If 'QProgramSignals' is supported, tell the remote stub what
1725 signals it should pass through to the inferior when detaching. */
1728 remote_program_signals (struct target_ops *self,
1729 int numsigs, unsigned char *signals)
1731 if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE)
1735 struct remote_state *rs = get_remote_state ();
1737 gdb_assert (numsigs < 256);
1738 for (i = 0; i < numsigs; i++)
1743 packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1);
1744 strcpy (packet, "QProgramSignals:");
1745 p = packet + strlen (packet);
1746 for (i = 0; i < numsigs; i++)
1748 if (signal_pass_state (i))
1751 *p++ = tohex (i >> 4);
1752 *p++ = tohex (i & 15);
1761 if (!rs->last_program_signals_packet
1762 || strcmp (rs->last_program_signals_packet, packet) != 0)
1765 getpkt (&rs->buf, &rs->buf_size, 0);
1766 packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]);
1767 xfree (rs->last_program_signals_packet);
1768 rs->last_program_signals_packet = packet;
1775 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1776 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1777 thread. If GEN is set, set the general thread, if not, then set
1778 the step/continue thread. */
1780 set_thread (struct ptid ptid, int gen)
1782 struct remote_state *rs = get_remote_state ();
1783 ptid_t state = gen ? rs->general_thread : rs->continue_thread;
1784 char *buf = rs->buf;
1785 char *endbuf = rs->buf + get_remote_packet_size ();
1787 if (ptid_equal (state, ptid))
1791 *buf++ = gen ? 'g' : 'c';
1792 if (ptid_equal (ptid, magic_null_ptid))
1793 xsnprintf (buf, endbuf - buf, "0");
1794 else if (ptid_equal (ptid, any_thread_ptid))
1795 xsnprintf (buf, endbuf - buf, "0");
1796 else if (ptid_equal (ptid, minus_one_ptid))
1797 xsnprintf (buf, endbuf - buf, "-1");
1799 write_ptid (buf, endbuf, ptid);
1801 getpkt (&rs->buf, &rs->buf_size, 0);
1803 rs->general_thread = ptid;
1805 rs->continue_thread = ptid;
1809 set_general_thread (struct ptid ptid)
1811 set_thread (ptid, 1);
1815 set_continue_thread (struct ptid ptid)
1817 set_thread (ptid, 0);
1820 /* Change the remote current process. Which thread within the process
1821 ends up selected isn't important, as long as it is the same process
1822 as what INFERIOR_PTID points to.
1824 This comes from that fact that there is no explicit notion of
1825 "selected process" in the protocol. The selected process for
1826 general operations is the process the selected general thread
1830 set_general_process (void)
1832 struct remote_state *rs = get_remote_state ();
1834 /* If the remote can't handle multiple processes, don't bother. */
1835 if (!rs->extended || !remote_multi_process_p (rs))
1838 /* We only need to change the remote current thread if it's pointing
1839 at some other process. */
1840 if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid))
1841 set_general_thread (inferior_ptid);
1845 /* Return nonzero if the thread PTID is still alive on the remote
1849 remote_thread_alive (struct target_ops *ops, ptid_t ptid)
1851 struct remote_state *rs = get_remote_state ();
1854 if (ptid_equal (ptid, magic_null_ptid))
1855 /* The main thread is always alive. */
1858 if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0)
1859 /* The main thread is always alive. This can happen after a
1860 vAttach, if the remote side doesn't support
1865 endp = rs->buf + get_remote_packet_size ();
1868 write_ptid (p, endp, ptid);
1871 getpkt (&rs->buf, &rs->buf_size, 0);
1872 return (rs->buf[0] == 'O' && rs->buf[1] == 'K');
1875 /* About these extended threadlist and threadinfo packets. They are
1876 variable length packets but, the fields within them are often fixed
1877 length. They are redundent enough to send over UDP as is the
1878 remote protocol in general. There is a matching unit test module
1881 /* WARNING: This threadref data structure comes from the remote O.S.,
1882 libstub protocol encoding, and remote.c. It is not particularly
1885 /* Right now, the internal structure is int. We want it to be bigger.
1886 Plan to fix this. */
1888 typedef int gdb_threadref; /* Internal GDB thread reference. */
1890 /* gdb_ext_thread_info is an internal GDB data structure which is
1891 equivalent to the reply of the remote threadinfo packet. */
1893 struct gdb_ext_thread_info
1895 threadref threadid; /* External form of thread reference. */
1896 int active; /* Has state interesting to GDB?
1898 char display[256]; /* Brief state display, name,
1899 blocked/suspended. */
1900 char shortname[32]; /* To be used to name threads. */
1901 char more_display[256]; /* Long info, statistics, queue depth,
1905 /* The volume of remote transfers can be limited by submitting
1906 a mask containing bits specifying the desired information.
1907 Use a union of these values as the 'selection' parameter to
1908 get_thread_info. FIXME: Make these TAG names more thread specific. */
1910 #define TAG_THREADID 1
1911 #define TAG_EXISTS 2
1912 #define TAG_DISPLAY 4
1913 #define TAG_THREADNAME 8
1914 #define TAG_MOREDISPLAY 16
1916 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1918 static char *unpack_nibble (char *buf, int *val);
1920 static char *unpack_byte (char *buf, int *value);
1922 static char *pack_int (char *buf, int value);
1924 static char *unpack_int (char *buf, int *value);
1926 static char *unpack_string (char *src, char *dest, int length);
1928 static char *pack_threadid (char *pkt, threadref *id);
1930 static char *unpack_threadid (char *inbuf, threadref *id);
1932 void int_to_threadref (threadref *id, int value);
1934 static int threadref_to_int (threadref *ref);
1936 static void copy_threadref (threadref *dest, threadref *src);
1938 static int threadmatch (threadref *dest, threadref *src);
1940 static char *pack_threadinfo_request (char *pkt, int mode,
1943 static int remote_unpack_thread_info_response (char *pkt,
1944 threadref *expectedref,
1945 struct gdb_ext_thread_info
1949 static int remote_get_threadinfo (threadref *threadid,
1950 int fieldset, /*TAG mask */
1951 struct gdb_ext_thread_info *info);
1953 static char *pack_threadlist_request (char *pkt, int startflag,
1955 threadref *nextthread);
1957 static int parse_threadlist_response (char *pkt,
1959 threadref *original_echo,
1960 threadref *resultlist,
1963 static int remote_get_threadlist (int startflag,
1964 threadref *nextthread,
1968 threadref *threadlist);
1970 typedef int (*rmt_thread_action) (threadref *ref, void *context);
1972 static int remote_threadlist_iterator (rmt_thread_action stepfunction,
1973 void *context, int looplimit);
1975 static int remote_newthread_step (threadref *ref, void *context);
1978 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1979 buffer we're allowed to write to. Returns
1980 BUF+CHARACTERS_WRITTEN. */
1983 write_ptid (char *buf, const char *endbuf, ptid_t ptid)
1986 struct remote_state *rs = get_remote_state ();
1988 if (remote_multi_process_p (rs))
1990 pid = ptid_get_pid (ptid);
1992 buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid);
1994 buf += xsnprintf (buf, endbuf - buf, "p%x.", pid);
1996 tid = ptid_get_lwp (ptid);
1998 buf += xsnprintf (buf, endbuf - buf, "-%x", -tid);
2000 buf += xsnprintf (buf, endbuf - buf, "%x", tid);
2005 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2006 passed the last parsed char. Returns null_ptid on error. */
2009 read_ptid (char *buf, char **obuf)
2013 ULONGEST pid = 0, tid = 0;
2017 /* Multi-process ptid. */
2018 pp = unpack_varlen_hex (p + 1, &pid);
2020 error (_("invalid remote ptid: %s"), p);
2023 pp = unpack_varlen_hex (p + 1, &tid);
2026 return ptid_build (pid, tid, 0);
2029 /* No multi-process. Just a tid. */
2030 pp = unpack_varlen_hex (p, &tid);
2032 /* Since the stub is not sending a process id, then default to
2033 what's in inferior_ptid, unless it's null at this point. If so,
2034 then since there's no way to know the pid of the reported
2035 threads, use the magic number. */
2036 if (ptid_equal (inferior_ptid, null_ptid))
2037 pid = ptid_get_pid (magic_null_ptid);
2039 pid = ptid_get_pid (inferior_ptid);
2043 return ptid_build (pid, tid, 0);
2049 if (ch >= 'a' && ch <= 'f')
2050 return ch - 'a' + 10;
2051 if (ch >= '0' && ch <= '9')
2053 if (ch >= 'A' && ch <= 'F')
2054 return ch - 'A' + 10;
2059 stub_unpack_int (char *buff, int fieldlength)
2066 nibble = stubhex (*buff++);
2070 retval = retval << 4;
2076 unpack_nibble (char *buf, int *val)
2078 *val = fromhex (*buf++);
2083 unpack_byte (char *buf, int *value)
2085 *value = stub_unpack_int (buf, 2);
2090 pack_int (char *buf, int value)
2092 buf = pack_hex_byte (buf, (value >> 24) & 0xff);
2093 buf = pack_hex_byte (buf, (value >> 16) & 0xff);
2094 buf = pack_hex_byte (buf, (value >> 8) & 0x0ff);
2095 buf = pack_hex_byte (buf, (value & 0xff));
2100 unpack_int (char *buf, int *value)
2102 *value = stub_unpack_int (buf, 8);
2106 #if 0 /* Currently unused, uncomment when needed. */
2107 static char *pack_string (char *pkt, char *string);
2110 pack_string (char *pkt, char *string)
2115 len = strlen (string);
2117 len = 200; /* Bigger than most GDB packets, junk??? */
2118 pkt = pack_hex_byte (pkt, len);
2122 if ((ch == '\0') || (ch == '#'))
2123 ch = '*'; /* Protect encapsulation. */
2128 #endif /* 0 (unused) */
2131 unpack_string (char *src, char *dest, int length)
2140 pack_threadid (char *pkt, threadref *id)
2143 unsigned char *altid;
2145 altid = (unsigned char *) id;
2146 limit = pkt + BUF_THREAD_ID_SIZE;
2148 pkt = pack_hex_byte (pkt, *altid++);
2154 unpack_threadid (char *inbuf, threadref *id)
2157 char *limit = inbuf + BUF_THREAD_ID_SIZE;
2160 altref = (char *) id;
2162 while (inbuf < limit)
2164 x = stubhex (*inbuf++);
2165 y = stubhex (*inbuf++);
2166 *altref++ = (x << 4) | y;
2171 /* Externally, threadrefs are 64 bits but internally, they are still
2172 ints. This is due to a mismatch of specifications. We would like
2173 to use 64bit thread references internally. This is an adapter
2177 int_to_threadref (threadref *id, int value)
2179 unsigned char *scan;
2181 scan = (unsigned char *) id;
2187 *scan++ = (value >> 24) & 0xff;
2188 *scan++ = (value >> 16) & 0xff;
2189 *scan++ = (value >> 8) & 0xff;
2190 *scan++ = (value & 0xff);
2194 threadref_to_int (threadref *ref)
2197 unsigned char *scan;
2203 value = (value << 8) | ((*scan++) & 0xff);
2208 copy_threadref (threadref *dest, threadref *src)
2211 unsigned char *csrc, *cdest;
2213 csrc = (unsigned char *) src;
2214 cdest = (unsigned char *) dest;
2221 threadmatch (threadref *dest, threadref *src)
2223 /* Things are broken right now, so just assume we got a match. */
2225 unsigned char *srcp, *destp;
2227 srcp = (char *) src;
2228 destp = (char *) dest;
2232 result &= (*srcp++ == *destp++) ? 1 : 0;
2239 threadid:1, # always request threadid
2246 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2249 pack_threadinfo_request (char *pkt, int mode, threadref *id)
2251 *pkt++ = 'q'; /* Info Query */
2252 *pkt++ = 'P'; /* process or thread info */
2253 pkt = pack_int (pkt, mode); /* mode */
2254 pkt = pack_threadid (pkt, id); /* threadid */
2255 *pkt = '\0'; /* terminate */
2259 /* These values tag the fields in a thread info response packet. */
2260 /* Tagging the fields allows us to request specific fields and to
2261 add more fields as time goes by. */
2263 #define TAG_THREADID 1 /* Echo the thread identifier. */
2264 #define TAG_EXISTS 2 /* Is this process defined enough to
2265 fetch registers and its stack? */
2266 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2267 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2268 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2272 remote_unpack_thread_info_response (char *pkt, threadref *expectedref,
2273 struct gdb_ext_thread_info *info)
2275 struct remote_state *rs = get_remote_state ();
2279 char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */
2282 /* info->threadid = 0; FIXME: implement zero_threadref. */
2284 info->display[0] = '\0';
2285 info->shortname[0] = '\0';
2286 info->more_display[0] = '\0';
2288 /* Assume the characters indicating the packet type have been
2290 pkt = unpack_int (pkt, &mask); /* arg mask */
2291 pkt = unpack_threadid (pkt, &ref);
2294 warning (_("Incomplete response to threadinfo request."));
2295 if (!threadmatch (&ref, expectedref))
2296 { /* This is an answer to a different request. */
2297 warning (_("ERROR RMT Thread info mismatch."));
2300 copy_threadref (&info->threadid, &ref);
2302 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2304 /* Packets are terminated with nulls. */
2305 while ((pkt < limit) && mask && *pkt)
2307 pkt = unpack_int (pkt, &tag); /* tag */
2308 pkt = unpack_byte (pkt, &length); /* length */
2309 if (!(tag & mask)) /* Tags out of synch with mask. */
2311 warning (_("ERROR RMT: threadinfo tag mismatch."));
2315 if (tag == TAG_THREADID)
2319 warning (_("ERROR RMT: length of threadid is not 16."));
2323 pkt = unpack_threadid (pkt, &ref);
2324 mask = mask & ~TAG_THREADID;
2327 if (tag == TAG_EXISTS)
2329 info->active = stub_unpack_int (pkt, length);
2331 mask = mask & ~(TAG_EXISTS);
2334 warning (_("ERROR RMT: 'exists' length too long."));
2340 if (tag == TAG_THREADNAME)
2342 pkt = unpack_string (pkt, &info->shortname[0], length);
2343 mask = mask & ~TAG_THREADNAME;
2346 if (tag == TAG_DISPLAY)
2348 pkt = unpack_string (pkt, &info->display[0], length);
2349 mask = mask & ~TAG_DISPLAY;
2352 if (tag == TAG_MOREDISPLAY)
2354 pkt = unpack_string (pkt, &info->more_display[0], length);
2355 mask = mask & ~TAG_MOREDISPLAY;
2358 warning (_("ERROR RMT: unknown thread info tag."));
2359 break; /* Not a tag we know about. */
2365 remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */
2366 struct gdb_ext_thread_info *info)
2368 struct remote_state *rs = get_remote_state ();
2371 pack_threadinfo_request (rs->buf, fieldset, threadid);
2373 getpkt (&rs->buf, &rs->buf_size, 0);
2375 if (rs->buf[0] == '\0')
2378 result = remote_unpack_thread_info_response (rs->buf + 2,
2383 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2386 pack_threadlist_request (char *pkt, int startflag, int threadcount,
2387 threadref *nextthread)
2389 *pkt++ = 'q'; /* info query packet */
2390 *pkt++ = 'L'; /* Process LIST or threadLIST request */
2391 pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */
2392 pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */
2393 pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */
2398 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2401 parse_threadlist_response (char *pkt, int result_limit,
2402 threadref *original_echo, threadref *resultlist,
2405 struct remote_state *rs = get_remote_state ();
2407 int count, resultcount, done;
2410 /* Assume the 'q' and 'M chars have been stripped. */
2411 limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE);
2412 /* done parse past here */
2413 pkt = unpack_byte (pkt, &count); /* count field */
2414 pkt = unpack_nibble (pkt, &done);
2415 /* The first threadid is the argument threadid. */
2416 pkt = unpack_threadid (pkt, original_echo); /* should match query packet */
2417 while ((count-- > 0) && (pkt < limit))
2419 pkt = unpack_threadid (pkt, resultlist++);
2420 if (resultcount++ >= result_limit)
2428 /* Fetch the next batch of threads from the remote. Returns -1 if the
2429 qL packet is not supported, 0 on error and 1 on success. */
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);
2446 if (*rs->buf == '\0')
2448 /* Packet not supported. */
2453 parse_threadlist_response (rs->buf + 2, result_limit,
2454 &rs->echo_nextthread, threadlist, done);
2456 if (!threadmatch (&rs->echo_nextthread, nextthread))
2458 /* FIXME: This is a good reason to drop the packet. */
2459 /* Possably, there is a duplicate response. */
2461 retransmit immediatly - race conditions
2462 retransmit after timeout - yes
2464 wait for packet, then exit
2466 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2467 return 0; /* I choose simply exiting. */
2469 if (*result_count <= 0)
2473 warning (_("RMT ERROR : failed to get remote thread list."));
2476 return result; /* break; */
2478 if (*result_count > result_limit)
2481 warning (_("RMT ERROR: threadlist response longer than requested."));
2487 /* Fetch the list of remote threads, with the qL packet, and call
2488 STEPFUNCTION for each thread found. Stops iterating and returns 1
2489 if STEPFUNCTION returns true. Stops iterating and returns 0 if the
2490 STEPFUNCTION returns false. If the packet is not supported,
2494 remote_threadlist_iterator (rmt_thread_action stepfunction, void *context,
2497 struct remote_state *rs = get_remote_state ();
2498 int done, i, result_count;
2506 if (loopcount++ > looplimit)
2509 warning (_("Remote fetch threadlist -infinite loop-."));
2512 result = remote_get_threadlist (startflag, &rs->nextthread,
2513 MAXTHREADLISTRESULTS,
2514 &done, &result_count,
2515 rs->resultthreadlist);
2518 /* Clear for later iterations. */
2520 /* Setup to resume next batch of thread references, set nextthread. */
2521 if (result_count >= 1)
2522 copy_threadref (&rs->nextthread,
2523 &rs->resultthreadlist[result_count - 1]);
2525 while (result_count--)
2527 if (!(*stepfunction) (&rs->resultthreadlist[i++], context))
2537 /* A thread found on the remote target. */
2539 typedef struct thread_item
2541 /* The thread's PTID. */
2544 /* The thread's extra info. May be NULL. */
2547 /* The core the thread was running on. -1 if not known. */
2550 DEF_VEC_O(thread_item_t);
2552 /* Context passed around to the various methods listing remote
2553 threads. As new threads are found, they're added to the ITEMS
2556 struct threads_listing_context
2558 /* The threads found on the remote target. */
2559 VEC (thread_item_t) *items;
2563 remote_newthread_step (threadref *ref, void *data)
2565 struct threads_listing_context *context = data;
2566 struct thread_item item;
2567 int pid = ptid_get_pid (inferior_ptid);
2569 item.ptid = ptid_build (pid, threadref_to_int (ref), 0);
2573 VEC_safe_push (thread_item_t, context->items, &item);
2575 return 1; /* continue iterator */
2578 #define CRAZY_MAX_THREADS 1000
2581 remote_current_thread (ptid_t oldpid)
2583 struct remote_state *rs = get_remote_state ();
2586 getpkt (&rs->buf, &rs->buf_size, 0);
2587 if (rs->buf[0] == 'Q' && rs->buf[1] == 'C')
2588 return read_ptid (&rs->buf[2], NULL);
2593 /* List remote threads using the deprecated qL packet. */
2596 remote_get_threads_with_ql (struct target_ops *ops,
2597 struct threads_listing_context *context)
2599 if (remote_threadlist_iterator (remote_newthread_step, context,
2600 CRAZY_MAX_THREADS) >= 0)
2606 #if defined(HAVE_LIBEXPAT)
2609 start_thread (struct gdb_xml_parser *parser,
2610 const struct gdb_xml_element *element,
2611 void *user_data, VEC(gdb_xml_value_s) *attributes)
2613 struct threads_listing_context *data = user_data;
2615 struct thread_item item;
2617 struct gdb_xml_value *attr;
2619 id = xml_find_attribute (attributes, "id")->value;
2620 item.ptid = read_ptid (id, NULL);
2622 attr = xml_find_attribute (attributes, "core");
2624 item.core = *(ULONGEST *) attr->value;
2630 VEC_safe_push (thread_item_t, data->items, &item);
2634 end_thread (struct gdb_xml_parser *parser,
2635 const struct gdb_xml_element *element,
2636 void *user_data, const char *body_text)
2638 struct threads_listing_context *data = user_data;
2640 if (body_text && *body_text)
2641 VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text);
2644 const struct gdb_xml_attribute thread_attributes[] = {
2645 { "id", GDB_XML_AF_NONE, NULL, NULL },
2646 { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL },
2647 { NULL, GDB_XML_AF_NONE, NULL, NULL }
2650 const struct gdb_xml_element thread_children[] = {
2651 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2654 const struct gdb_xml_element threads_children[] = {
2655 { "thread", thread_attributes, thread_children,
2656 GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
2657 start_thread, end_thread },
2658 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2661 const struct gdb_xml_element threads_elements[] = {
2662 { "threads", NULL, threads_children,
2663 GDB_XML_EF_NONE, NULL, NULL },
2664 { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
2667 /* Discard the contents of the constructed thread info context. */
2670 clear_threads_listing_context (void *p)
2672 struct threads_listing_context *context = p;
2674 struct thread_item *item;
2676 for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i)
2677 xfree (item->extra);
2679 VEC_free (thread_item_t, context->items);
2684 /* List remote threads using qXfer:threads:read. */
2687 remote_get_threads_with_qxfer (struct target_ops *ops,
2688 struct threads_listing_context *context)
2690 #if defined(HAVE_LIBEXPAT)
2691 if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE)
2693 char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL);
2694 struct cleanup *back_to = make_cleanup (xfree, xml);
2696 if (xml != NULL && *xml != '\0')
2698 gdb_xml_parse_quick (_("threads"), "threads.dtd",
2699 threads_elements, xml, context);
2702 do_cleanups (back_to);
2710 /* List remote threads using qfThreadInfo/qsThreadInfo. */
2713 remote_get_threads_with_qthreadinfo (struct target_ops *ops,
2714 struct threads_listing_context *context)
2716 struct remote_state *rs = get_remote_state ();
2718 if (rs->use_threadinfo_query)
2722 putpkt ("qfThreadInfo");
2723 getpkt (&rs->buf, &rs->buf_size, 0);
2725 if (bufp[0] != '\0') /* q packet recognized */
2727 while (*bufp++ == 'm') /* reply contains one or more TID */
2731 struct thread_item item;
2733 item.ptid = read_ptid (bufp, &bufp);
2737 VEC_safe_push (thread_item_t, context->items, &item);
2739 while (*bufp++ == ','); /* comma-separated list */
2740 putpkt ("qsThreadInfo");
2741 getpkt (&rs->buf, &rs->buf_size, 0);
2748 /* Packet not recognized. */
2749 rs->use_threadinfo_query = 0;
2756 /* Implement the to_find_new_threads function for the remote
2760 remote_threads_info (struct target_ops *ops)
2762 struct remote_state *rs = get_remote_state ();
2763 struct threads_listing_context context;
2764 struct cleanup *old_chain;
2766 context.items = NULL;
2767 old_chain = make_cleanup (clear_threads_listing_context, &context);
2769 /* We have a few different mechanisms to fetch the thread list. Try
2770 them all, starting with the most preferred one first, falling
2771 back to older methods. */
2772 if (remote_get_threads_with_qxfer (ops, &context)
2773 || remote_get_threads_with_qthreadinfo (ops, &context)
2774 || remote_get_threads_with_ql (ops, &context))
2777 struct thread_item *item;
2779 /* Add threads we don't know about yet to our list. */
2781 VEC_iterate (thread_item_t, context.items, i, item);
2784 if (!ptid_equal (item->ptid, null_ptid))
2786 struct private_thread_info *info;
2787 /* In non-stop mode, we assume new found threads are
2788 running until proven otherwise with a stop reply. In
2789 all-stop, we can only get here if all threads are
2791 int running = non_stop ? 1 : 0;
2793 remote_notice_new_inferior (item->ptid, running);
2795 info = demand_private_info (item->ptid);
2796 info->core = item->core;
2797 info->extra = item->extra;
2803 do_cleanups (old_chain);
2807 * Collect a descriptive string about the given thread.
2808 * The target may say anything it wants to about the thread
2809 * (typically info about its blocked / runnable state, name, etc.).
2810 * This string will appear in the info threads display.
2812 * Optional: targets are not required to implement this function.
2816 remote_threads_extra_info (struct target_ops *self, struct thread_info *tp)
2818 struct remote_state *rs = get_remote_state ();
2822 struct gdb_ext_thread_info threadinfo;
2823 static char display_buf[100]; /* arbitrary... */
2824 int n = 0; /* position in display_buf */
2826 if (rs->remote_desc == 0) /* paranoia */
2827 internal_error (__FILE__, __LINE__,
2828 _("remote_threads_extra_info"));
2830 if (ptid_equal (tp->ptid, magic_null_ptid)
2831 || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0))
2832 /* This is the main thread which was added by GDB. The remote
2833 server doesn't know about it. */
2836 if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE)
2838 struct thread_info *info = find_thread_ptid (tp->ptid);
2840 if (info && info->private)
2841 return info->private->extra;
2846 if (rs->use_threadextra_query)
2849 char *endb = rs->buf + get_remote_packet_size ();
2851 xsnprintf (b, endb - b, "qThreadExtraInfo,");
2853 write_ptid (b, endb, tp->ptid);
2856 getpkt (&rs->buf, &rs->buf_size, 0);
2857 if (rs->buf[0] != 0)
2859 n = min (strlen (rs->buf) / 2, sizeof (display_buf));
2860 result = hex2bin (rs->buf, (gdb_byte *) display_buf, n);
2861 display_buf [result] = '\0';
2866 /* If the above query fails, fall back to the old method. */
2867 rs->use_threadextra_query = 0;
2868 set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
2869 | TAG_MOREDISPLAY | TAG_DISPLAY;
2870 int_to_threadref (&id, ptid_get_lwp (tp->ptid));
2871 if (remote_get_threadinfo (&id, set, &threadinfo))
2872 if (threadinfo.active)
2874 if (*threadinfo.shortname)
2875 n += xsnprintf (&display_buf[0], sizeof (display_buf) - n,
2876 " Name: %s,", threadinfo.shortname);
2877 if (*threadinfo.display)
2878 n += xsnprintf (&display_buf[n], sizeof (display_buf) - n,
2879 " State: %s,", threadinfo.display);
2880 if (*threadinfo.more_display)
2881 n += xsnprintf (&display_buf[n], sizeof (display_buf) - n,
2882 " Priority: %s", threadinfo.more_display);
2886 /* For purely cosmetic reasons, clear up trailing commas. */
2887 if (',' == display_buf[n-1])
2888 display_buf[n-1] = ' ';
2897 remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr,
2898 struct static_tracepoint_marker *marker)
2900 struct remote_state *rs = get_remote_state ();
2903 xsnprintf (p, get_remote_packet_size (), "qTSTMat:");
2905 p += hexnumstr (p, addr);
2907 getpkt (&rs->buf, &rs->buf_size, 0);
2911 error (_("Remote failure reply: %s"), p);
2915 parse_static_tracepoint_marker_definition (p, &p, marker);
2922 static VEC(static_tracepoint_marker_p) *
2923 remote_static_tracepoint_markers_by_strid (struct target_ops *self,
2926 struct remote_state *rs = get_remote_state ();
2927 VEC(static_tracepoint_marker_p) *markers = NULL;
2928 struct static_tracepoint_marker *marker = NULL;
2929 struct cleanup *old_chain;
2932 /* Ask for a first packet of static tracepoint marker
2935 getpkt (&rs->buf, &rs->buf_size, 0);
2938 error (_("Remote failure reply: %s"), p);
2940 old_chain = make_cleanup (free_current_marker, &marker);
2945 marker = XCNEW (struct static_tracepoint_marker);
2949 parse_static_tracepoint_marker_definition (p, &p, marker);
2951 if (strid == NULL || strcmp (strid, marker->str_id) == 0)
2953 VEC_safe_push (static_tracepoint_marker_p,
2959 release_static_tracepoint_marker (marker);
2960 memset (marker, 0, sizeof (*marker));
2963 while (*p++ == ','); /* comma-separated list */
2964 /* Ask for another packet of static tracepoint definition. */
2966 getpkt (&rs->buf, &rs->buf_size, 0);
2970 do_cleanups (old_chain);
2975 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2978 remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread)
2980 return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0);
2984 /* Restart the remote side; this is an extended protocol operation. */
2987 extended_remote_restart (void)
2989 struct remote_state *rs = get_remote_state ();
2991 /* Send the restart command; for reasons I don't understand the
2992 remote side really expects a number after the "R". */
2993 xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0);
2996 remote_fileio_reset ();
2999 /* Clean up connection to a remote debugger. */
3002 remote_close (struct target_ops *self)
3004 struct remote_state *rs = get_remote_state ();
3006 if (rs->remote_desc == NULL)
3007 return; /* already closed */
3009 /* Make sure we leave stdin registered in the event loop, and we
3010 don't leave the async SIGINT signal handler installed. */
3011 remote_terminal_ours (self);
3013 serial_close (rs->remote_desc);
3014 rs->remote_desc = NULL;
3016 /* We don't have a connection to the remote stub anymore. Get rid
3017 of all the inferiors and their threads we were controlling.
3018 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3019 will be unable to find the thread corresponding to (pid, 0, 0). */
3020 inferior_ptid = null_ptid;
3021 discard_all_inferiors ();
3023 /* We are closing the remote target, so we should discard
3024 everything of this target. */
3025 discard_pending_stop_replies_in_queue (rs);
3027 if (remote_async_inferior_event_token)
3028 delete_async_event_handler (&remote_async_inferior_event_token);
3030 remote_notif_state_xfree (rs->notif_state);
3032 trace_reset_local_state ();
3035 /* Query the remote side for the text, data and bss offsets. */
3040 struct remote_state *rs = get_remote_state ();
3043 int lose, num_segments = 0, do_sections, do_segments;
3044 CORE_ADDR text_addr, data_addr, bss_addr, segments[2];
3045 struct section_offsets *offs;
3046 struct symfile_segment_data *data;
3048 if (symfile_objfile == NULL)
3051 putpkt ("qOffsets");
3052 getpkt (&rs->buf, &rs->buf_size, 0);
3055 if (buf[0] == '\000')
3056 return; /* Return silently. Stub doesn't support
3060 warning (_("Remote failure reply: %s"), buf);
3064 /* Pick up each field in turn. This used to be done with scanf, but
3065 scanf will make trouble if CORE_ADDR size doesn't match
3066 conversion directives correctly. The following code will work
3067 with any size of CORE_ADDR. */
3068 text_addr = data_addr = bss_addr = 0;
3072 if (strncmp (ptr, "Text=", 5) == 0)
3075 /* Don't use strtol, could lose on big values. */
3076 while (*ptr && *ptr != ';')
3077 text_addr = (text_addr << 4) + fromhex (*ptr++);
3079 if (strncmp (ptr, ";Data=", 6) == 0)
3082 while (*ptr && *ptr != ';')
3083 data_addr = (data_addr << 4) + fromhex (*ptr++);
3088 if (!lose && strncmp (ptr, ";Bss=", 5) == 0)
3091 while (*ptr && *ptr != ';')
3092 bss_addr = (bss_addr << 4) + fromhex (*ptr++);
3094 if (bss_addr != data_addr)
3095 warning (_("Target reported unsupported offsets: %s"), buf);
3100 else if (strncmp (ptr, "TextSeg=", 8) == 0)
3103 /* Don't use strtol, could lose on big values. */
3104 while (*ptr && *ptr != ';')
3105 text_addr = (text_addr << 4) + fromhex (*ptr++);
3108 if (strncmp (ptr, ";DataSeg=", 9) == 0)
3111 while (*ptr && *ptr != ';')
3112 data_addr = (data_addr << 4) + fromhex (*ptr++);
3120 error (_("Malformed response to offset query, %s"), buf);
3121 else if (*ptr != '\0')
3122 warning (_("Target reported unsupported offsets: %s"), buf);
3124 offs = ((struct section_offsets *)
3125 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)));
3126 memcpy (offs, symfile_objfile->section_offsets,
3127 SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections));
3129 data = get_symfile_segment_data (symfile_objfile->obfd);
3130 do_segments = (data != NULL);
3131 do_sections = num_segments == 0;
3133 if (num_segments > 0)
3135 segments[0] = text_addr;
3136 segments[1] = data_addr;
3138 /* If we have two segments, we can still try to relocate everything
3139 by assuming that the .text and .data offsets apply to the whole
3140 text and data segments. Convert the offsets given in the packet
3141 to base addresses for symfile_map_offsets_to_segments. */
3142 else if (data && data->num_segments == 2)
3144 segments[0] = data->segment_bases[0] + text_addr;
3145 segments[1] = data->segment_bases[1] + data_addr;
3148 /* If the object file has only one segment, assume that it is text
3149 rather than data; main programs with no writable data are rare,
3150 but programs with no code are useless. Of course the code might
3151 have ended up in the data segment... to detect that we would need
3152 the permissions here. */
3153 else if (data && data->num_segments == 1)
3155 segments[0] = data->segment_bases[0] + text_addr;
3158 /* There's no way to relocate by segment. */
3164 int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data,
3165 offs, num_segments, segments);
3167 if (ret == 0 && !do_sections)
3168 error (_("Can not handle qOffsets TextSeg "
3169 "response with this symbol file"));
3176 free_symfile_segment_data (data);
3180 offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr;
3182 /* This is a temporary kludge to force data and bss to use the
3183 same offsets because that's what nlmconv does now. The real
3184 solution requires changes to the stub and remote.c that I
3185 don't have time to do right now. */
3187 offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr;
3188 offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr;
3191 objfile_relocate (symfile_objfile, offs);
3194 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3195 threads we know are stopped already. This is used during the
3196 initial remote connection in non-stop mode --- threads that are
3197 reported as already being stopped are left stopped. */
3200 set_stop_requested_callback (struct thread_info *thread, void *data)
3202 /* If we have a stop reply for this thread, it must be stopped. */
3203 if (peek_stop_reply (thread->ptid))
3204 set_stop_requested (thread->ptid, 1);
3209 /* Send interrupt_sequence to remote target. */
3211 send_interrupt_sequence (void)
3213 struct remote_state *rs = get_remote_state ();
3215 if (interrupt_sequence_mode == interrupt_sequence_control_c)
3216 remote_serial_write ("\x03", 1);
3217 else if (interrupt_sequence_mode == interrupt_sequence_break)
3218 serial_send_break (rs->remote_desc);
3219 else if (interrupt_sequence_mode == interrupt_sequence_break_g)
3221 serial_send_break (rs->remote_desc);
3222 remote_serial_write ("g", 1);
3225 internal_error (__FILE__, __LINE__,
3226 _("Invalid value for interrupt_sequence_mode: %s."),
3227 interrupt_sequence_mode);
3231 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3232 and extract the PTID. Returns NULL_PTID if not found. */
3235 stop_reply_extract_thread (char *stop_reply)
3237 if (stop_reply[0] == 'T' && strlen (stop_reply) > 3)
3241 /* Txx r:val ; r:val (...) */
3244 /* Look for "register" named "thread". */
3249 p1 = strchr (p, ':');
3253 if (strncmp (p, "thread", p1 - p) == 0)
3254 return read_ptid (++p1, &p);
3256 p1 = strchr (p, ';');
3268 /* Determine the remote side's current thread. If we have a stop
3269 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3270 "thread" register we can extract the current thread from. If not,
3271 ask the remote which is the current thread with qC. The former
3272 method avoids a roundtrip. */
3275 get_current_thread (char *wait_status)
3279 /* Note we don't use remote_parse_stop_reply as that makes use of
3280 the target architecture, which we haven't yet fully determined at
3282 if (wait_status != NULL)
3283 ptid = stop_reply_extract_thread (wait_status);
3284 if (ptid_equal (ptid, null_ptid))
3285 ptid = remote_current_thread (inferior_ptid);
3290 /* Query the remote target for which is the current thread/process,
3291 add it to our tables, and update INFERIOR_PTID. The caller is
3292 responsible for setting the state such that the remote end is ready
3293 to return the current thread.
3295 This function is called after handling the '?' or 'vRun' packets,
3296 whose response is a stop reply from which we can also try
3297 extracting the thread. If the target doesn't support the explicit
3298 qC query, we infer the current thread from that stop reply, passed
3299 in in WAIT_STATUS, which may be NULL. */
3302 add_current_inferior_and_thread (char *wait_status)
3304 struct remote_state *rs = get_remote_state ();
3306 ptid_t ptid = null_ptid;
3308 inferior_ptid = null_ptid;
3310 /* Now, if we have thread information, update inferior_ptid. */
3311 ptid = get_current_thread (wait_status);
3313 if (!ptid_equal (ptid, null_ptid))
3315 if (!remote_multi_process_p (rs))
3318 inferior_ptid = ptid;
3322 /* Without this, some commands which require an active target
3323 (such as kill) won't work. This variable serves (at least)
3324 double duty as both the pid of the target process (if it has
3325 such), and as a flag indicating that a target is active. */
3326 inferior_ptid = magic_null_ptid;
3330 remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1);
3332 /* Add the main thread. */
3333 add_thread_silent (inferior_ptid);
3337 remote_start_remote (int from_tty, struct target_ops *target, int extended_p)
3339 struct remote_state *rs = get_remote_state ();
3340 struct packet_config *noack_config;
3341 char *wait_status = NULL;
3343 immediate_quit++; /* Allow user to interrupt it. */
3346 if (interrupt_on_connect)
3347 send_interrupt_sequence ();
3349 /* Ack any packet which the remote side has already sent. */
3350 serial_write (rs->remote_desc, "+", 1);
3352 /* Signal other parts that we're going through the initial setup,
3353 and so things may not be stable yet. */
3354 rs->starting_up = 1;
3356 /* The first packet we send to the target is the optional "supported
3357 packets" request. If the target can answer this, it will tell us
3358 which later probes to skip. */
3359 remote_query_supported ();
3361 /* If the stub wants to get a QAllow, compose one and send it. */
3362 if (packet_support (PACKET_QAllow) != PACKET_DISABLE)
3363 remote_set_permissions (target);
3365 /* Next, we possibly activate noack mode.
3367 If the QStartNoAckMode packet configuration is set to AUTO,
3368 enable noack mode if the stub reported a wish for it with
3371 If set to TRUE, then enable noack mode even if the stub didn't
3372 report it in qSupported. If the stub doesn't reply OK, the
3373 session ends with an error.
3375 If FALSE, then don't activate noack mode, regardless of what the
3376 stub claimed should be the default with qSupported. */
3378 noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode];
3379 if (packet_config_support (noack_config) != PACKET_DISABLE)
3381 putpkt ("QStartNoAckMode");
3382 getpkt (&rs->buf, &rs->buf_size, 0);
3383 if (packet_ok (rs->buf, noack_config) == PACKET_OK)
3389 /* Tell the remote that we are using the extended protocol. */
3391 getpkt (&rs->buf, &rs->buf_size, 0);
3394 /* Let the target know which signals it is allowed to pass down to
3396 update_signals_program_target ();
3398 /* Next, if the target can specify a description, read it. We do
3399 this before anything involving memory or registers. */
3400 target_find_description ();
3402 /* Next, now that we know something about the target, update the
3403 address spaces in the program spaces. */
3404 update_address_spaces ();
3406 /* On OSs where the list of libraries is global to all
3407 processes, we fetch them early. */
3408 if (gdbarch_has_global_solist (target_gdbarch ()))
3409 solib_add (NULL, from_tty, target, auto_solib_add);
3413 if (packet_support (PACKET_QNonStop) != PACKET_ENABLE)
3414 error (_("Non-stop mode requested, but remote "
3415 "does not support non-stop"));
3417 putpkt ("QNonStop:1");
3418 getpkt (&rs->buf, &rs->buf_size, 0);
3420 if (strcmp (rs->buf, "OK") != 0)
3421 error (_("Remote refused setting non-stop mode with: %s"), rs->buf);
3423 /* Find about threads and processes the stub is already
3424 controlling. We default to adding them in the running state.
3425 The '?' query below will then tell us about which threads are
3427 remote_threads_info (target);
3429 else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE)
3431 /* Don't assume that the stub can operate in all-stop mode.
3432 Request it explicitly. */
3433 putpkt ("QNonStop:0");
3434 getpkt (&rs->buf, &rs->buf_size, 0);
3436 if (strcmp (rs->buf, "OK") != 0)
3437 error (_("Remote refused setting all-stop mode with: %s"), rs->buf);
3440 /* Upload TSVs regardless of whether the target is running or not. The
3441 remote stub, such as GDBserver, may have some predefined or builtin
3442 TSVs, even if the target is not running. */
3443 if (remote_get_trace_status (target, current_trace_status ()) != -1)
3445 struct uploaded_tsv *uploaded_tsvs = NULL;
3447 remote_upload_trace_state_variables (target, &uploaded_tsvs);
3448 merge_uploaded_trace_state_variables (&uploaded_tsvs);
3451 /* Check whether the target is running now. */
3453 getpkt (&rs->buf, &rs->buf_size, 0);
3459 struct inferior *inf;
3461 if (rs->buf[0] == 'W' || rs->buf[0] == 'X')
3464 error (_("The target is not running (try extended-remote?)"));
3466 /* We're connected, but not running. Drop out before we
3467 call start_remote. */
3468 rs->starting_up = 0;
3473 /* Save the reply for later. */
3474 wait_status = alloca (strlen (rs->buf) + 1);
3475 strcpy (wait_status, rs->buf);
3478 /* Fetch thread list. */
3479 target_find_new_threads ();
3481 /* Let the stub know that we want it to return the thread. */
3482 set_continue_thread (minus_one_ptid);
3484 if (thread_count () == 0)
3486 /* Target has no concept of threads at all. GDB treats
3487 non-threaded target as single-threaded; add a main
3489 add_current_inferior_and_thread (wait_status);
3493 /* We have thread information; select the thread the target
3494 says should be current. If we're reconnecting to a
3495 multi-threaded program, this will ideally be the thread
3496 that last reported an event before GDB disconnected. */
3497 inferior_ptid = get_current_thread (wait_status);
3498 if (ptid_equal (inferior_ptid, null_ptid))
3500 /* Odd... The target was able to list threads, but not
3501 tell us which thread was current (no "thread"
3502 register in T stop reply?). Just pick the first
3503 thread in the thread list then. */
3504 inferior_ptid = thread_list->ptid;
3508 /* init_wait_for_inferior should be called before get_offsets in order
3509 to manage `inserted' flag in bp loc in a correct state.
3510 breakpoint_init_inferior, called from init_wait_for_inferior, set
3511 `inserted' flag to 0, while before breakpoint_re_set, called from
3512 start_remote, set `inserted' flag to 1. In the initialization of
3513 inferior, breakpoint_init_inferior should be called first, and then
3514 breakpoint_re_set can be called. If this order is broken, state of
3515 `inserted' flag is wrong, and cause some problems on breakpoint
3517 init_wait_for_inferior ();
3519 get_offsets (); /* Get text, data & bss offsets. */
3521 /* If we could not find a description using qXfer, and we know
3522 how to do it some other way, try again. This is not
3523 supported for non-stop; it could be, but it is tricky if
3524 there are no stopped threads when we connect. */
3525 if (remote_read_description_p (target)
3526 && gdbarch_target_desc (target_gdbarch ()) == NULL)
3528 target_clear_description ();
3529 target_find_description ();
3532 /* Use the previously fetched status. */
3533 gdb_assert (wait_status != NULL);
3534 strcpy (rs->buf, wait_status);
3535 rs->cached_wait_status = 1;
3538 start_remote (from_tty); /* Initialize gdb process mechanisms. */
3542 /* Clear WFI global state. Do this before finding about new
3543 threads and inferiors, and setting the current inferior.
3544 Otherwise we would clear the proceed status of the current
3545 inferior when we want its stop_soon state to be preserved
3546 (see notice_new_inferior). */
3547 init_wait_for_inferior ();
3549 /* In non-stop, we will either get an "OK", meaning that there
3550 are no stopped threads at this time; or, a regular stop
3551 reply. In the latter case, there may be more than one thread
3552 stopped --- we pull them all out using the vStopped
3554 if (strcmp (rs->buf, "OK") != 0)
3556 struct notif_client *notif = ¬if_client_stop;
3558 /* remote_notif_get_pending_replies acks this one, and gets
3560 rs->notif_state->pending_event[notif_client_stop.id]
3561 = remote_notif_parse (notif, rs->buf);
3562 remote_notif_get_pending_events (notif);
3564 /* Make sure that threads that were stopped remain
3566 iterate_over_threads (set_stop_requested_callback, NULL);
3569 if (target_can_async_p ())
3570 target_async (inferior_event_handler, 0);
3572 if (thread_count () == 0)
3575 error (_("The target is not running (try extended-remote?)"));
3577 /* We're connected, but not running. Drop out before we
3578 call start_remote. */
3579 rs->starting_up = 0;
3583 /* Let the stub know that we want it to return the thread. */
3585 /* Force the stub to choose a thread. */
3586 set_general_thread (null_ptid);
3589 inferior_ptid = remote_current_thread (minus_one_ptid);
3590 if (ptid_equal (inferior_ptid, minus_one_ptid))
3591 error (_("remote didn't report the current thread in non-stop mode"));
3593 get_offsets (); /* Get text, data & bss offsets. */
3595 /* In non-stop mode, any cached wait status will be stored in
3596 the stop reply queue. */
3597 gdb_assert (wait_status == NULL);
3599 /* Report all signals during attach/startup. */
3600 remote_pass_signals (target, 0, NULL);
3603 /* If we connected to a live target, do some additional setup. */
3604 if (target_has_execution)
3606 if (symfile_objfile) /* No use without a symbol-file. */
3607 remote_check_symbols ();
3610 /* Possibly the target has been engaged in a trace run started
3611 previously; find out where things are at. */
3612 if (remote_get_trace_status (target, current_trace_status ()) != -1)
3614 struct uploaded_tp *uploaded_tps = NULL;
3616 if (current_trace_status ()->running)
3617 printf_filtered (_("Trace is already running on the target.\n"));
3619 remote_upload_tracepoints (target, &uploaded_tps);
3621 merge_uploaded_tracepoints (&uploaded_tps);
3624 /* The thread and inferior lists are now synchronized with the
3625 target, our symbols have been relocated, and we're merged the
3626 target's tracepoints with ours. We're done with basic start
3628 rs->starting_up = 0;
3630 /* Maybe breakpoints are global and need to be inserted now. */
3631 if (breakpoints_should_be_inserted_now ())
3632 insert_breakpoints ();
3635 /* Open a connection to a remote debugger.
3636 NAME is the filename used for communication. */
3639 remote_open (const char *name, int from_tty)
3641 remote_open_1 (name, from_tty, &remote_ops, 0);
3644 /* Open a connection to a remote debugger using the extended
3645 remote gdb protocol. NAME is the filename used for communication. */
3648 extended_remote_open (const char *name, int from_tty)
3650 remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */);
3653 /* Reset all packets back to "unknown support". Called when opening a
3654 new connection to a remote target. */
3657 reset_all_packet_configs_support (void)
3661 for (i = 0; i < PACKET_MAX; i++)
3662 remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN;
3665 /* Initialize all packet configs. */
3668 init_all_packet_configs (void)
3672 for (i = 0; i < PACKET_MAX; i++)
3674 remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO;
3675 remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN;
3679 /* Symbol look-up. */
3682 remote_check_symbols (void)
3684 struct remote_state *rs = get_remote_state ();
3685 char *msg, *reply, *tmp;
3686 struct bound_minimal_symbol sym;
3689 /* The remote side has no concept of inferiors that aren't running
3690 yet, it only knows about running processes. If we're connected
3691 but our current inferior is not running, we should not invite the
3692 remote target to request symbol lookups related to its
3693 (unrelated) current process. */
3694 if (!target_has_execution)
3697 if (packet_support (PACKET_qSymbol) == PACKET_DISABLE)
3700 /* Make sure the remote is pointing at the right process. Note
3701 there's no way to select "no process". */
3702 set_general_process ();
3704 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3705 because we need both at the same time. */
3706 msg = alloca (get_remote_packet_size ());
3708 /* Invite target to request symbol lookups. */
3710 putpkt ("qSymbol::");
3711 getpkt (&rs->buf, &rs->buf_size, 0);
3712 packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]);
3715 while (strncmp (reply, "qSymbol:", 8) == 0)
3717 struct bound_minimal_symbol sym;
3720 end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2);
3722 sym = lookup_minimal_symbol (msg, NULL, NULL);
3723 if (sym.minsym == NULL)
3724 xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]);
3727 int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8;
3728 CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym);
3730 /* If this is a function address, return the start of code
3731 instead of any data function descriptor. */
3732 sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3736 xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s",
3737 phex_nz (sym_addr, addr_size), &reply[8]);
3741 getpkt (&rs->buf, &rs->buf_size, 0);
3746 static struct serial *
3747 remote_serial_open (const char *name)
3749 static int udp_warning = 0;
3751 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3752 of in ser-tcp.c, because it is the remote protocol assuming that the
3753 serial connection is reliable and not the serial connection promising
3755 if (!udp_warning && strncmp (name, "udp:", 4) == 0)
3757 warning (_("The remote protocol may be unreliable over UDP.\n"
3758 "Some events may be lost, rendering further debugging "
3763 return serial_open (name);
3766 /* Inform the target of our permission settings. The permission flags
3767 work without this, but if the target knows the settings, it can do
3768 a couple things. First, it can add its own check, to catch cases
3769 that somehow manage to get by the permissions checks in target
3770 methods. Second, if the target is wired to disallow particular
3771 settings (for instance, a system in the field that is not set up to
3772 be able to stop at a breakpoint), it can object to any unavailable
3776 remote_set_permissions (struct target_ops *self)
3778 struct remote_state *rs = get_remote_state ();
3780 xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:"
3781 "WriteReg:%x;WriteMem:%x;"
3782 "InsertBreak:%x;InsertTrace:%x;"
3783 "InsertFastTrace:%x;Stop:%x",
3784 may_write_registers, may_write_memory,
3785 may_insert_breakpoints, may_insert_tracepoints,
3786 may_insert_fast_tracepoints, may_stop);
3788 getpkt (&rs->buf, &rs->buf_size, 0);
3790 /* If the target didn't like the packet, warn the user. Do not try
3791 to undo the user's settings, that would just be maddening. */
3792 if (strcmp (rs->buf, "OK") != 0)
3793 warning (_("Remote refused setting permissions with: %s"), rs->buf);
3796 /* This type describes each known response to the qSupported
3798 struct protocol_feature
3800 /* The name of this protocol feature. */
3803 /* The default for this protocol feature. */
3804 enum packet_support default_support;
3806 /* The function to call when this feature is reported, or after
3807 qSupported processing if the feature is not supported.
3808 The first argument points to this structure. The second
3809 argument indicates whether the packet requested support be
3810 enabled, disabled, or probed (or the default, if this function
3811 is being called at the end of processing and this feature was
3812 not reported). The third argument may be NULL; if not NULL, it
3813 is a NUL-terminated string taken from the packet following
3814 this feature's name and an equals sign. */
3815 void (*func) (const struct protocol_feature *, enum packet_support,
3818 /* The corresponding packet for this feature. Only used if
3819 FUNC is remote_supported_packet. */
3824 remote_supported_packet (const struct protocol_feature *feature,
3825 enum packet_support support,
3826 const char *argument)
3830 warning (_("Remote qSupported response supplied an unexpected value for"
3831 " \"%s\"."), feature->name);
3835 remote_protocol_packets[feature->packet].support = support;
3839 remote_packet_size (const struct protocol_feature *feature,
3840 enum packet_support support, const char *value)
3842 struct remote_state *rs = get_remote_state ();
3847 if (support != PACKET_ENABLE)
3850 if (value == NULL || *value == '\0')
3852 warning (_("Remote target reported \"%s\" without a size."),
3858 packet_size = strtol (value, &value_end, 16);
3859 if (errno != 0 || *value_end != '\0' || packet_size < 0)
3861 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3862 feature->name, value);
3866 if (packet_size > MAX_REMOTE_PACKET_SIZE)
3868 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3869 packet_size, MAX_REMOTE_PACKET_SIZE);
3870 packet_size = MAX_REMOTE_PACKET_SIZE;
3873 /* Record the new maximum packet size. */
3874 rs->explicit_packet_size = packet_size;
3877 static const struct protocol_feature remote_protocol_features[] = {
3878 { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 },
3879 { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet,
3880 PACKET_qXfer_auxv },
3881 { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet,
3882 PACKET_qXfer_features },
3883 { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet,
3884 PACKET_qXfer_libraries },
3885 { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet,
3886 PACKET_qXfer_libraries_svr4 },
3887 { "augmented-libraries-svr4-read", PACKET_DISABLE,
3888 remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature },
3889 { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet,
3890 PACKET_qXfer_memory_map },
3891 { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet,
3892 PACKET_qXfer_spu_read },
3893 { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet,
3894 PACKET_qXfer_spu_write },
3895 { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet,
3896 PACKET_qXfer_osdata },
3897 { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet,
3898 PACKET_qXfer_threads },
3899 { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet,
3900 PACKET_qXfer_traceframe_info },
3901 { "QPassSignals", PACKET_DISABLE, remote_supported_packet,
3902 PACKET_QPassSignals },
3903 { "QProgramSignals", PACKET_DISABLE, remote_supported_packet,
3904 PACKET_QProgramSignals },
3905 { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet,
3906 PACKET_QStartNoAckMode },
3907 { "multiprocess", PACKET_DISABLE, remote_supported_packet,
3908 PACKET_multiprocess_feature },
3909 { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop },
3910 { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet,
3911 PACKET_qXfer_siginfo_read },
3912 { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet,
3913 PACKET_qXfer_siginfo_write },
3914 { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet,
3915 PACKET_ConditionalTracepoints },
3916 { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet,
3917 PACKET_ConditionalBreakpoints },
3918 { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet,
3919 PACKET_BreakpointCommands },
3920 { "FastTracepoints", PACKET_DISABLE, remote_supported_packet,
3921 PACKET_FastTracepoints },
3922 { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet,
3923 PACKET_StaticTracepoints },
3924 {"InstallInTrace", PACKET_DISABLE, remote_supported_packet,
3925 PACKET_InstallInTrace},
3926 { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet,
3927 PACKET_DisconnectedTracing_feature },
3928 { "ReverseContinue", PACKET_DISABLE, remote_supported_packet,
3930 { "ReverseStep", PACKET_DISABLE, remote_supported_packet,
3932 { "TracepointSource", PACKET_DISABLE, remote_supported_packet,
3933 PACKET_TracepointSource },
3934 { "QAllow", PACKET_DISABLE, remote_supported_packet,
3936 { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet,
3937 PACKET_EnableDisableTracepoints_feature },
3938 { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet,
3939 PACKET_qXfer_fdpic },
3940 { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet,
3942 { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet,
3943 PACKET_QDisableRandomization },
3944 { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent},
3945 { "QTBuffer:size", PACKET_DISABLE,
3946 remote_supported_packet, PACKET_QTBuffer_size},
3947 { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature },
3948 { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off },
3949 { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts },
3950 { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet,
3951 PACKET_qXfer_btrace }
3954 static char *remote_support_xml;
3956 /* Register string appended to "xmlRegisters=" in qSupported query. */
3959 register_remote_support_xml (const char *xml)
3961 #if defined(HAVE_LIBEXPAT)
3962 if (remote_support_xml == NULL)
3963 remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL);
3966 char *copy = xstrdup (remote_support_xml + 13);
3967 char *p = strtok (copy, ",");
3971 if (strcmp (p, xml) == 0)
3978 while ((p = strtok (NULL, ",")) != NULL);
3981 remote_support_xml = reconcat (remote_support_xml,
3982 remote_support_xml, ",", xml,
3989 remote_query_supported_append (char *msg, const char *append)
3992 return reconcat (msg, msg, ";", append, (char *) NULL);
3994 return xstrdup (append);
3998 remote_query_supported (void)
4000 struct remote_state *rs = get_remote_state ();
4003 unsigned char seen [ARRAY_SIZE (remote_protocol_features)];
4005 /* The packet support flags are handled differently for this packet
4006 than for most others. We treat an error, a disabled packet, and
4007 an empty response identically: any features which must be reported
4008 to be used will be automatically disabled. An empty buffer
4009 accomplishes this, since that is also the representation for a list
4010 containing no features. */
4013 if (packet_support (PACKET_qSupported) != PACKET_DISABLE)
4016 struct cleanup *old_chain = make_cleanup (free_current_contents, &q);
4018 q = remote_query_supported_append (q, "multiprocess+");
4020 if (remote_support_xml)
4021 q = remote_query_supported_append (q, remote_support_xml);
4023 q = remote_query_supported_append (q, "qRelocInsn+");
4025 q = reconcat (q, "qSupported:", q, (char *) NULL);
4028 do_cleanups (old_chain);
4030 getpkt (&rs->buf, &rs->buf_size, 0);
4032 /* If an error occured, warn, but do not return - just reset the
4033 buffer to empty and go on to disable features. */
4034 if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported])
4037 warning (_("Remote failure reply: %s"), rs->buf);
4042 memset (seen, 0, sizeof (seen));
4047 enum packet_support is_supported;
4048 char *p, *end, *name_end, *value;
4050 /* First separate out this item from the rest of the packet. If
4051 there's another item after this, we overwrite the separator
4052 (terminated strings are much easier to work with). */
4054 end = strchr (p, ';');
4057 end = p + strlen (p);
4067 warning (_("empty item in \"qSupported\" response"));
4072 name_end = strchr (p, '=');
4075 /* This is a name=value entry. */
4076 is_supported = PACKET_ENABLE;
4077 value = name_end + 1;
4086 is_supported = PACKET_ENABLE;
4090 is_supported = PACKET_DISABLE;
4094 is_supported = PACKET_SUPPORT_UNKNOWN;
4098 warning (_("unrecognized item \"%s\" "
4099 "in \"qSupported\" response"), p);
4105 for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++)
4106 if (strcmp (remote_protocol_features[i].name, p) == 0)
4108 const struct protocol_feature *feature;
4111 feature = &remote_protocol_features[i];
4112 feature->func (feature, is_supported, value);
4117 /* If we increased the packet size, make sure to increase the global
4118 buffer size also. We delay this until after parsing the entire
4119 qSupported packet, because this is the same buffer we were
4121 if (rs->buf_size < rs->explicit_packet_size)
4123 rs->buf_size = rs->explicit_packet_size;
4124 rs->buf = xrealloc (rs->buf, rs->buf_size);
4127 /* Handle the defaults for unmentioned features. */
4128 for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++)
4131 const struct protocol_feature *feature;
4133 feature = &remote_protocol_features[i];
4134 feature->func (feature, feature->default_support, NULL);
4138 /* Remove any of the remote.c targets from target stack. Upper targets depend
4139 on it so remove them first. */
4142 remote_unpush_target (void)
4144 pop_all_targets_above (process_stratum - 1);
4148 remote_open_1 (const char *name, int from_tty,
4149 struct target_ops *target, int extended_p)
4151 struct remote_state *rs = get_remote_state ();
4154 error (_("To open a remote debug connection, you need to specify what\n"
4155 "serial device is attached to the remote system\n"
4156 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4158 /* See FIXME above. */
4159 if (!target_async_permitted)
4160 wait_forever_enabled_p = 1;
4162 /* If we're connected to a running target, target_preopen will kill it.
4163 Ask this question first, before target_preopen has a chance to kill
4165 if (rs->remote_desc != NULL && !have_inferiors ())
4168 && !query (_("Already connected to a remote target. Disconnect? ")))
4169 error (_("Still connected."));
4172 /* Here the possibly existing remote target gets unpushed. */
4173 target_preopen (from_tty);
4175 /* Make sure we send the passed signals list the next time we resume. */
4176 xfree (rs->last_pass_packet);
4177 rs->last_pass_packet = NULL;
4179 /* Make sure we send the program signals list the next time we
4181 xfree (rs->last_program_signals_packet);
4182 rs->last_program_signals_packet = NULL;
4184 remote_fileio_reset ();
4185 reopen_exec_file ();
4188 rs->remote_desc = remote_serial_open (name);
4189 if (!rs->remote_desc)
4190 perror_with_name (name);
4192 if (baud_rate != -1)
4194 if (serial_setbaudrate (rs->remote_desc, baud_rate))
4196 /* The requested speed could not be set. Error out to
4197 top level after closing remote_desc. Take care to
4198 set remote_desc to NULL to avoid closing remote_desc
4200 serial_close (rs->remote_desc);
4201 rs->remote_desc = NULL;
4202 perror_with_name (name);
4206 serial_raw (rs->remote_desc);
4208 /* If there is something sitting in the buffer we might take it as a
4209 response to a command, which would be bad. */
4210 serial_flush_input (rs->remote_desc);
4214 puts_filtered ("Remote debugging using ");
4215 puts_filtered (name);
4216 puts_filtered ("\n");
4218 push_target (target); /* Switch to using remote target now. */
4220 /* Register extra event sources in the event loop. */
4221 remote_async_inferior_event_token
4222 = create_async_event_handler (remote_async_inferior_event_handler,
4224 rs->notif_state = remote_notif_state_allocate ();
4226 /* Reset the target state; these things will be queried either by
4227 remote_query_supported or as they are needed. */
4228 reset_all_packet_configs_support ();
4229 rs->cached_wait_status = 0;
4230 rs->explicit_packet_size = 0;
4232 rs->extended = extended_p;
4233 rs->waiting_for_stop_reply = 0;
4234 rs->ctrlc_pending_p = 0;
4236 rs->general_thread = not_sent_ptid;
4237 rs->continue_thread = not_sent_ptid;
4238 rs->remote_traceframe_number = -1;
4240 /* Probe for ability to use "ThreadInfo" query, as required. */
4241 rs->use_threadinfo_query = 1;
4242 rs->use_threadextra_query = 1;
4244 if (target_async_permitted)
4246 /* With this target we start out by owning the terminal. */
4247 remote_async_terminal_ours_p = 1;
4249 /* FIXME: cagney/1999-09-23: During the initial connection it is
4250 assumed that the target is already ready and able to respond to
4251 requests. Unfortunately remote_start_remote() eventually calls
4252 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4253 around this. Eventually a mechanism that allows
4254 wait_for_inferior() to expect/get timeouts will be
4256 wait_forever_enabled_p = 0;
4259 /* First delete any symbols previously loaded from shared libraries. */
4260 no_shared_libraries (NULL, 0);
4263 init_thread_list ();
4265 /* Start the remote connection. If error() or QUIT, discard this
4266 target (we'd otherwise be in an inconsistent state) and then
4267 propogate the error on up the exception chain. This ensures that
4268 the caller doesn't stumble along blindly assuming that the
4269 function succeeded. The CLI doesn't have this problem but other
4270 UI's, such as MI do.
4272 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4273 this function should return an error indication letting the
4274 caller restore the previous state. Unfortunately the command
4275 ``target remote'' is directly wired to this function making that
4276 impossible. On a positive note, the CLI side of this problem has
4277 been fixed - the function set_cmd_context() makes it possible for
4278 all the ``target ....'' commands to share a common callback
4279 function. See cli-dump.c. */
4281 volatile struct gdb_exception ex;
4283 TRY_CATCH (ex, RETURN_MASK_ALL)
4285 remote_start_remote (from_tty, target, extended_p);
4289 /* Pop the partially set up target - unless something else did
4290 already before throwing the exception. */
4291 if (rs->remote_desc != NULL)
4292 remote_unpush_target ();
4293 if (target_async_permitted)
4294 wait_forever_enabled_p = 1;
4295 throw_exception (ex);
4299 if (target_async_permitted)
4300 wait_forever_enabled_p = 1;
4303 /* This takes a program previously attached to and detaches it. After
4304 this is done, GDB can be used to debug some other program. We
4305 better not have left any breakpoints in the target program or it'll
4306 die when it hits one. */
4309 remote_detach_1 (const char *args, int from_tty, int extended)
4311 int pid = ptid_get_pid (inferior_ptid);
4312 struct remote_state *rs = get_remote_state ();
4315 error (_("Argument given to \"detach\" when remotely debugging."));
4317 if (!target_has_execution)
4318 error (_("No process to detach from."));
4322 char *exec_file = get_exec_file (0);
4323 if (exec_file == NULL)
4325 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file,
4326 target_pid_to_str (pid_to_ptid (pid)));
4327 gdb_flush (gdb_stdout);
4330 /* Tell the remote target to detach. */
4331 if (remote_multi_process_p (rs))
4332 xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid);
4334 strcpy (rs->buf, "D");
4337 getpkt (&rs->buf, &rs->buf_size, 0);
4339 if (rs->buf[0] == 'O' && rs->buf[1] == 'K')
4341 else if (rs->buf[0] == '\0')
4342 error (_("Remote doesn't know how to detach"));
4344 error (_("Can't detach process."));
4346 if (from_tty && !extended)
4347 puts_filtered (_("Ending remote debugging.\n"));
4349 target_mourn_inferior ();
4353 remote_detach (struct target_ops *ops, const char *args, int from_tty)
4355 remote_detach_1 (args, from_tty, 0);
4359 extended_remote_detach (struct target_ops *ops, const char *args, int from_tty)
4361 remote_detach_1 (args, from_tty, 1);
4364 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4367 remote_disconnect (struct target_ops *target, const char *args, int from_tty)
4370 error (_("Argument given to \"disconnect\" when remotely debugging."));
4372 /* Make sure we unpush even the extended remote targets; mourn
4373 won't do it. So call remote_mourn_1 directly instead of
4374 target_mourn_inferior. */
4375 remote_mourn_1 (target);
4378 puts_filtered ("Ending remote debugging.\n");
4381 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4382 be chatty about it. */
4385 extended_remote_attach_1 (struct target_ops *target, const char *args,
4388 struct remote_state *rs = get_remote_state ();
4390 char *wait_status = NULL;
4392 pid = parse_pid_to_attach (args);
4394 /* Remote PID can be freely equal to getpid, do not check it here the same
4395 way as in other targets. */
4397 if (packet_support (PACKET_vAttach) == PACKET_DISABLE)
4398 error (_("This target does not support attaching to a process"));
4402 char *exec_file = get_exec_file (0);
4405 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file,
4406 target_pid_to_str (pid_to_ptid (pid)));
4408 printf_unfiltered (_("Attaching to %s\n"),
4409 target_pid_to_str (pid_to_ptid (pid)));
4411 gdb_flush (gdb_stdout);
4414 xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid);
4416 getpkt (&rs->buf, &rs->buf_size, 0);
4418 switch (packet_ok (rs->buf,
4419 &remote_protocol_packets[PACKET_vAttach]))
4424 /* Save the reply for later. */
4425 wait_status = alloca (strlen (rs->buf) + 1);
4426 strcpy (wait_status, rs->buf);
4428 else if (strcmp (rs->buf, "OK") != 0)
4429 error (_("Attaching to %s failed with: %s"),
4430 target_pid_to_str (pid_to_ptid (pid)),
4433 case PACKET_UNKNOWN:
4434 error (_("This target does not support attaching to a process"));
4436 error (_("Attaching to %s failed"),
4437 target_pid_to_str (pid_to_ptid (pid)));
4440 set_current_inferior (remote_add_inferior (0, pid, 1));
4442 inferior_ptid = pid_to_ptid (pid);
4446 struct thread_info *thread;
4448 /* Get list of threads. */
4449 remote_threads_info (target);
4451 thread = first_thread_of_process (pid);
4453 inferior_ptid = thread->ptid;
4455 inferior_ptid = pid_to_ptid (pid);
4457 /* Invalidate our notion of the remote current thread. */
4458 record_currthread (rs, minus_one_ptid);
4462 /* Now, if we have thread information, update inferior_ptid. */
4463 inferior_ptid = remote_current_thread (inferior_ptid);
4465 /* Add the main thread to the thread list. */
4466 add_thread_silent (inferior_ptid);
4469 /* Next, if the target can specify a description, read it. We do
4470 this before anything involving memory or registers. */
4471 target_find_description ();
4475 /* Use the previously fetched status. */
4476 gdb_assert (wait_status != NULL);
4478 if (target_can_async_p ())
4480 struct notif_event *reply
4481 = remote_notif_parse (¬if_client_stop, wait_status);
4483 push_stop_reply ((struct stop_reply *) reply);
4485 target_async (inferior_event_handler, 0);
4489 gdb_assert (wait_status != NULL);
4490 strcpy (rs->buf, wait_status);
4491 rs->cached_wait_status = 1;
4495 gdb_assert (wait_status == NULL);
4499 extended_remote_attach (struct target_ops *ops, const char *args, int from_tty)
4501 extended_remote_attach_1 (ops, args, from_tty);
4504 /* Implementation of the to_post_attach method. */
4507 extended_remote_post_attach (struct target_ops *ops, int pid)
4509 /* In certain cases GDB might not have had the chance to start
4510 symbol lookup up until now. This could happen if the debugged
4511 binary is not using shared libraries, the vsyscall page is not
4512 present (on Linux) and the binary itself hadn't changed since the
4513 debugging process was started. */
4514 if (symfile_objfile != NULL)
4515 remote_check_symbols();
4519 /* Check for the availability of vCont. This function should also check
4523 remote_vcont_probe (struct remote_state *rs)
4527 strcpy (rs->buf, "vCont?");
4529 getpkt (&rs->buf, &rs->buf_size, 0);
4532 /* Make sure that the features we assume are supported. */
4533 if (strncmp (buf, "vCont", 5) == 0)
4536 int support_s, support_S, support_c, support_C;
4542 rs->supports_vCont.t = 0;
4543 rs->supports_vCont.r = 0;
4544 while (p && *p == ';')
4547 if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0))
4549 else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0))
4551 else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0))
4553 else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0))
4555 else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0))
4556 rs->supports_vCont.t = 1;
4557 else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0))
4558 rs->supports_vCont.r = 1;
4560 p = strchr (p, ';');
4563 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4564 BUF will make packet_ok disable the packet. */
4565 if (!support_s || !support_S || !support_c || !support_C)
4569 packet_ok (buf, &remote_protocol_packets[PACKET_vCont]);
4572 /* Helper function for building "vCont" resumptions. Write a
4573 resumption to P. ENDP points to one-passed-the-end of the buffer
4574 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4575 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4576 resumed thread should be single-stepped and/or signalled. If PTID
4577 equals minus_one_ptid, then all threads are resumed; if PTID
4578 represents a process, then all threads of the process are resumed;
4579 the thread to be stepped and/or signalled is given in the global
4583 append_resumption (char *p, char *endp,
4584 ptid_t ptid, int step, enum gdb_signal siggnal)
4586 struct remote_state *rs = get_remote_state ();
4588 if (step && siggnal != GDB_SIGNAL_0)
4589 p += xsnprintf (p, endp - p, ";S%02x", siggnal);
4591 /* GDB is willing to range step. */
4592 && use_range_stepping
4593 /* Target supports range stepping. */
4594 && rs->supports_vCont.r
4595 /* We don't currently support range stepping multiple
4596 threads with a wildcard (though the protocol allows it,
4597 so stubs shouldn't make an active effort to forbid
4599 && !(remote_multi_process_p (rs) && ptid_is_pid (ptid)))
4601 struct thread_info *tp;
4603 if (ptid_equal (ptid, minus_one_ptid))
4605 /* If we don't know about the target thread's tid, then
4606 we're resuming magic_null_ptid (see caller). */
4607 tp = find_thread_ptid (magic_null_ptid);
4610 tp = find_thread_ptid (ptid);
4611 gdb_assert (tp != NULL);
4613 if (tp->control.may_range_step)
4615 int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8;
4617 p += xsnprintf (p, endp - p, ";r%s,%s",
4618 phex_nz (tp->control.step_range_start,
4620 phex_nz (tp->control.step_range_end,
4624 p += xsnprintf (p, endp - p, ";s");
4627 p += xsnprintf (p, endp - p, ";s");
4628 else if (siggnal != GDB_SIGNAL_0)
4629 p += xsnprintf (p, endp - p, ";C%02x", siggnal);
4631 p += xsnprintf (p, endp - p, ";c");
4633 if (remote_multi_process_p (rs) && ptid_is_pid (ptid))
4637 /* All (-1) threads of process. */
4638 nptid = ptid_build (ptid_get_pid (ptid), -1, 0);
4640 p += xsnprintf (p, endp - p, ":");
4641 p = write_ptid (p, endp, nptid);
4643 else if (!ptid_equal (ptid, minus_one_ptid))
4645 p += xsnprintf (p, endp - p, ":");
4646 p = write_ptid (p, endp, ptid);
4652 /* Append a vCont continue-with-signal action for threads that have a
4653 non-zero stop signal. */
4656 append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid)
4658 struct thread_info *thread;
4660 ALL_NON_EXITED_THREADS (thread)
4661 if (ptid_match (thread->ptid, ptid)
4662 && !ptid_equal (inferior_ptid, thread->ptid)
4663 && thread->suspend.stop_signal != GDB_SIGNAL_0)
4665 p = append_resumption (p, endp, thread->ptid,
4666 0, thread->suspend.stop_signal);
4667 thread->suspend.stop_signal = GDB_SIGNAL_0;
4673 /* Resume the remote inferior by using a "vCont" packet. The thread
4674 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4675 resumed thread should be single-stepped and/or signalled. If PTID
4676 equals minus_one_ptid, then all threads are resumed; the thread to
4677 be stepped and/or signalled is given in the global INFERIOR_PTID.
4678 This function returns non-zero iff it resumes the inferior.
4680 This function issues a strict subset of all possible vCont commands at the
4684 remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal)
4686 struct remote_state *rs = get_remote_state ();
4690 if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN)
4691 remote_vcont_probe (rs);
4693 if (packet_support (PACKET_vCont) == PACKET_DISABLE)
4697 endp = rs->buf + get_remote_packet_size ();
4699 /* If we could generate a wider range of packets, we'd have to worry
4700 about overflowing BUF. Should there be a generic
4701 "multi-part-packet" packet? */
4703 p += xsnprintf (p, endp - p, "vCont");
4705 if (ptid_equal (ptid, magic_null_ptid))
4707 /* MAGIC_NULL_PTID means that we don't have any active threads,
4708 so we don't have any TID numbers the inferior will
4709 understand. Make sure to only send forms that do not specify
4711 append_resumption (p, endp, minus_one_ptid, step, siggnal);
4713 else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid))
4715 /* Resume all threads (of all processes, or of a single
4716 process), with preference for INFERIOR_PTID. This assumes
4717 inferior_ptid belongs to the set of all threads we are about
4719 if (step || siggnal != GDB_SIGNAL_0)
4721 /* Step inferior_ptid, with or without signal. */
4722 p = append_resumption (p, endp, inferior_ptid, step, siggnal);
4725 /* Also pass down any pending signaled resumption for other
4726 threads not the current. */
4727 p = append_pending_thread_resumptions (p, endp, ptid);
4729 /* And continue others without a signal. */
4730 append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0);
4734 /* Scheduler locking; resume only PTID. */
4735 append_resumption (p, endp, ptid, step, siggnal);
4738 gdb_assert (strlen (rs->buf) < get_remote_packet_size ());
4743 /* In non-stop, the stub replies to vCont with "OK". The stop
4744 reply will be reported asynchronously by means of a `%Stop'
4746 getpkt (&rs->buf, &rs->buf_size, 0);
4747 if (strcmp (rs->buf, "OK") != 0)
4748 error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf);
4754 /* Tell the remote machine to resume. */
4757 remote_resume (struct target_ops *ops,
4758 ptid_t ptid, int step, enum gdb_signal siggnal)
4760 struct remote_state *rs = get_remote_state ();
4763 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4764 (explained in remote-notif.c:handle_notification) so
4765 remote_notif_process is not called. We need find a place where
4766 it is safe to start a 'vNotif' sequence. It is good to do it
4767 before resuming inferior, because inferior was stopped and no RSP
4768 traffic at that moment. */
4770 remote_notif_process (rs->notif_state, ¬if_client_stop);
4772 rs->last_sent_signal = siggnal;
4773 rs->last_sent_step = step;
4775 /* The vCont packet doesn't need to specify threads via Hc. */
4776 /* No reverse support (yet) for vCont. */
4777 if (execution_direction != EXEC_REVERSE)
4778 if (remote_vcont_resume (ptid, step, siggnal))
4781 /* All other supported resume packets do use Hc, so set the continue
4783 if (ptid_equal (ptid, minus_one_ptid))
4784 set_continue_thread (any_thread_ptid);
4786 set_continue_thread (ptid);
4789 if (execution_direction == EXEC_REVERSE)
4791 /* We don't pass signals to the target in reverse exec mode. */
4792 if (info_verbose && siggnal != GDB_SIGNAL_0)
4793 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4796 if (step && packet_support (PACKET_bs) == PACKET_DISABLE)
4797 error (_("Remote reverse-step not supported."));
4798 if (!step && packet_support (PACKET_bc) == PACKET_DISABLE)
4799 error (_("Remote reverse-continue not supported."));
4801 strcpy (buf, step ? "bs" : "bc");
4803 else if (siggnal != GDB_SIGNAL_0)
4805 buf[0] = step ? 'S' : 'C';
4806 buf[1] = tohex (((int) siggnal >> 4) & 0xf);
4807 buf[2] = tohex (((int) siggnal) & 0xf);
4811 strcpy (buf, step ? "s" : "c");
4816 /* We are about to start executing the inferior, let's register it
4817 with the event loop. NOTE: this is the one place where all the
4818 execution commands end up. We could alternatively do this in each
4819 of the execution commands in infcmd.c. */
4820 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4821 into infcmd.c in order to allow inferior function calls to work
4822 NOT asynchronously. */
4823 if (target_can_async_p ())
4824 target_async (inferior_event_handler, 0);
4826 /* We've just told the target to resume. The remote server will
4827 wait for the inferior to stop, and then send a stop reply. In
4828 the mean time, we can't start another command/query ourselves
4829 because the stub wouldn't be ready to process it. This applies
4830 only to the base all-stop protocol, however. In non-stop (which
4831 only supports vCont), the stub replies with an "OK", and is
4832 immediate able to process further serial input. */
4834 rs->waiting_for_stop_reply = 1;
4838 /* Set up the signal handler for SIGINT, while the target is
4839 executing, ovewriting the 'regular' SIGINT signal handler. */
4841 async_initialize_sigint_signal_handler (void)
4843 signal (SIGINT, async_handle_remote_sigint);
4846 /* Signal handler for SIGINT, while the target is executing. */
4848 async_handle_remote_sigint (int sig)
4850 signal (sig, async_handle_remote_sigint_twice);
4851 /* Note we need to go through gdb_call_async_signal_handler in order
4852 to wake up the event loop on Windows. */
4853 gdb_call_async_signal_handler (async_sigint_remote_token, 0);
4856 /* Signal handler for SIGINT, installed after SIGINT has already been
4857 sent once. It will take effect the second time that the user sends
4860 async_handle_remote_sigint_twice (int sig)
4862 signal (sig, async_handle_remote_sigint);
4863 /* See note in async_handle_remote_sigint. */
4864 gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0);
4867 /* Perform the real interruption of the target execution, in response
4870 async_remote_interrupt (gdb_client_data arg)
4873 fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n");
4875 target_stop (inferior_ptid);
4878 /* Perform interrupt, if the first attempt did not succeed. Just give
4879 up on the target alltogether. */
4881 async_remote_interrupt_twice (gdb_client_data arg)
4884 fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n");
4889 /* Reinstall the usual SIGINT handlers, after the target has
4892 async_cleanup_sigint_signal_handler (void *dummy)
4894 signal (SIGINT, handle_sigint);
4897 /* Send ^C to target to halt it. Target will respond, and send us a
4899 static void (*ofunc) (int);
4901 /* The command line interface's stop routine. This function is installed
4902 as a signal handler for SIGINT. The first time a user requests a
4903 stop, we call remote_stop to send a break or ^C. If there is no
4904 response from the target (it didn't stop when the user requested it),
4905 we ask the user if he'd like to detach from the target. */
4907 sync_remote_interrupt (int signo)
4909 /* If this doesn't work, try more severe steps. */
4910 signal (signo, sync_remote_interrupt_twice);
4912 gdb_call_async_signal_handler (async_sigint_remote_token, 1);
4915 /* The user typed ^C twice. */
4918 sync_remote_interrupt_twice (int signo)
4920 signal (signo, ofunc);
4921 gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1);
4922 signal (signo, sync_remote_interrupt);
4925 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4926 thread, all threads of a remote process, or all threads of all
4930 remote_stop_ns (ptid_t ptid)
4932 struct remote_state *rs = get_remote_state ();
4934 char *endp = rs->buf + get_remote_packet_size ();
4936 if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN)
4937 remote_vcont_probe (rs);
4939 if (!rs->supports_vCont.t)
4940 error (_("Remote server does not support stopping threads"));
4942 if (ptid_equal (ptid, minus_one_ptid)
4943 || (!remote_multi_process_p (rs) && ptid_is_pid (ptid)))
4944 p += xsnprintf (p, endp - p, "vCont;t");
4949 p += xsnprintf (p, endp - p, "vCont;t:");
4951 if (ptid_is_pid (ptid))
4952 /* All (-1) threads of process. */
4953 nptid = ptid_build (ptid_get_pid (ptid), -1, 0);
4956 /* Small optimization: if we already have a stop reply for
4957 this thread, no use in telling the stub we want this
4959 if (peek_stop_reply (ptid))
4965 write_ptid (p, endp, nptid);
4968 /* In non-stop, we get an immediate OK reply. The stop reply will
4969 come in asynchronously by notification. */
4971 getpkt (&rs->buf, &rs->buf_size, 0);
4972 if (strcmp (rs->buf, "OK") != 0)
4973 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf);
4976 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4977 remote target. It is undefined which thread of which process
4978 reports the stop. */
4981 remote_stop_as (ptid_t ptid)
4983 struct remote_state *rs = get_remote_state ();
4985 rs->ctrlc_pending_p = 1;
4987 /* If the inferior is stopped already, but the core didn't know
4988 about it yet, just ignore the request. The cached wait status
4989 will be collected in remote_wait. */
4990 if (rs->cached_wait_status)
4993 /* Send interrupt_sequence to remote target. */
4994 send_interrupt_sequence ();
4997 /* This is the generic stop called via the target vector. When a target
4998 interrupt is requested, either by the command line or the GUI, we
4999 will eventually end up here. */
5002 remote_stop (struct target_ops *self, ptid_t ptid)
5005 fprintf_unfiltered (gdb_stdlog, "remote_stop called\n");
5008 remote_stop_ns (ptid);
5010 remote_stop_as (ptid);
5013 /* Ask the user what to do when an interrupt is received. */
5016 interrupt_query (void)
5018 target_terminal_ours ();
5020 if (target_can_async_p ())
5022 signal (SIGINT, handle_sigint);
5027 if (query (_("Interrupted while waiting for the program.\n\
5028 Give up (and stop debugging it)? ")))
5030 remote_unpush_target ();
5035 target_terminal_inferior ();
5038 /* Enable/disable target terminal ownership. Most targets can use
5039 terminal groups to control terminal ownership. Remote targets are
5040 different in that explicit transfer of ownership to/from GDB/target
5044 remote_terminal_inferior (struct target_ops *self)
5046 if (!target_async_permitted)
5047 /* Nothing to do. */
5050 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5051 idempotent. The event-loop GDB talking to an asynchronous target
5052 with a synchronous command calls this function from both
5053 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5054 transfer the terminal to the target when it shouldn't this guard
5056 if (!remote_async_terminal_ours_p)
5058 delete_file_handler (input_fd);
5059 remote_async_terminal_ours_p = 0;
5060 async_initialize_sigint_signal_handler ();
5061 /* NOTE: At this point we could also register our selves as the
5062 recipient of all input. Any characters typed could then be
5063 passed on down to the target. */
5067 remote_terminal_ours (struct target_ops *self)
5069 if (!target_async_permitted)
5070 /* Nothing to do. */
5073 /* See FIXME in remote_terminal_inferior. */
5074 if (remote_async_terminal_ours_p)
5076 async_cleanup_sigint_signal_handler (NULL);
5077 add_file_handler (input_fd, stdin_event_handler, 0);
5078 remote_async_terminal_ours_p = 1;
5082 remote_console_output (char *msg)
5086 for (p = msg; p[0] && p[1]; p += 2)
5089 char c = fromhex (p[0]) * 16 + fromhex (p[1]);
5093 fputs_unfiltered (tb, gdb_stdtarg);
5095 gdb_flush (gdb_stdtarg);
5098 typedef struct cached_reg
5101 gdb_byte data[MAX_REGISTER_SIZE];
5104 DEF_VEC_O(cached_reg_t);
5106 typedef struct stop_reply
5108 struct notif_event base;
5110 /* The identifier of the thread about this event */
5113 /* The remote state this event is associated with. When the remote
5114 connection, represented by a remote_state object, is closed,
5115 all the associated stop_reply events should be released. */
5116 struct remote_state *rs;
5118 struct target_waitstatus ws;
5120 /* Expedited registers. This makes remote debugging a bit more
5121 efficient for those targets that provide critical registers as
5122 part of their normal status mechanism (as another roundtrip to
5123 fetch them is avoided). */
5124 VEC(cached_reg_t) *regcache;
5126 int stopped_by_watchpoint_p;
5127 CORE_ADDR watch_data_address;
5132 DECLARE_QUEUE_P (stop_reply_p);
5133 DEFINE_QUEUE_P (stop_reply_p);
5134 /* The list of already fetched and acknowledged stop events. This
5135 queue is used for notification Stop, and other notifications
5136 don't need queue for their events, because the notification events
5137 of Stop can't be consumed immediately, so that events should be
5138 queued first, and be consumed by remote_wait_{ns,as} one per
5139 time. Other notifications can consume their events immediately,
5140 so queue is not needed for them. */
5141 static QUEUE (stop_reply_p) *stop_reply_queue;
5144 stop_reply_xfree (struct stop_reply *r)
5146 notif_event_xfree ((struct notif_event *) r);
5150 remote_notif_stop_parse (struct notif_client *self, char *buf,
5151 struct notif_event *event)
5153 remote_parse_stop_reply (buf, (struct stop_reply *) event);
5157 remote_notif_stop_ack (struct notif_client *self, char *buf,
5158 struct notif_event *event)
5160 struct stop_reply *stop_reply = (struct stop_reply *) event;
5163 putpkt ((char *) self->ack_command);
5165 if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE)
5166 /* We got an unknown stop reply. */
5167 error (_("Unknown stop reply"));
5169 push_stop_reply (stop_reply);
5173 remote_notif_stop_can_get_pending_events (struct notif_client *self)
5175 /* We can't get pending events in remote_notif_process for
5176 notification stop, and we have to do this in remote_wait_ns
5177 instead. If we fetch all queued events from stub, remote stub
5178 may exit and we have no chance to process them back in
5180 mark_async_event_handler (remote_async_inferior_event_token);
5185 stop_reply_dtr (struct notif_event *event)
5187 struct stop_reply *r = (struct stop_reply *) event;
5189 VEC_free (cached_reg_t, r->regcache);
5192 static struct notif_event *
5193 remote_notif_stop_alloc_reply (void)
5195 struct notif_event *r
5196 = (struct notif_event *) XNEW (struct stop_reply);
5198 r->dtr = stop_reply_dtr;
5203 /* A client of notification Stop. */
5205 struct notif_client notif_client_stop =
5209 remote_notif_stop_parse,
5210 remote_notif_stop_ack,
5211 remote_notif_stop_can_get_pending_events,
5212 remote_notif_stop_alloc_reply,
5216 /* A parameter to pass data in and out. */
5218 struct queue_iter_param
5221 struct stop_reply *output;
5224 /* Remove stop replies in the queue if its pid is equal to the given
5228 remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q,
5229 QUEUE_ITER (stop_reply_p) *iter,
5233 struct queue_iter_param *param = data;
5234 struct inferior *inf = param->input;
5236 if (ptid_get_pid (event->ptid) == inf->pid)
5238 stop_reply_xfree (event);
5239 QUEUE_remove_elem (stop_reply_p, q, iter);
5245 /* Discard all pending stop replies of inferior INF. */
5248 discard_pending_stop_replies (struct inferior *inf)
5251 struct queue_iter_param param;
5252 struct stop_reply *reply;
5253 struct remote_state *rs = get_remote_state ();
5254 struct remote_notif_state *rns = rs->notif_state;
5256 /* This function can be notified when an inferior exists. When the
5257 target is not remote, the notification state is NULL. */
5258 if (rs->remote_desc == NULL)
5261 reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id];
5263 /* Discard the in-flight notification. */
5264 if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid)
5266 stop_reply_xfree (reply);
5267 rns->pending_event[notif_client_stop.id] = NULL;
5271 param.output = NULL;
5272 /* Discard the stop replies we have already pulled with
5274 QUEUE_iterate (stop_reply_p, stop_reply_queue,
5275 remove_stop_reply_for_inferior, ¶m);
5278 /* If its remote state is equal to the given remote state,
5279 remove EVENT from the stop reply queue. */
5282 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q,
5283 QUEUE_ITER (stop_reply_p) *iter,
5287 struct queue_iter_param *param = data;
5288 struct remote_state *rs = param->input;
5290 if (event->rs == rs)
5292 stop_reply_xfree (event);
5293 QUEUE_remove_elem (stop_reply_p, q, iter);
5299 /* Discard the stop replies for RS in stop_reply_queue. */
5302 discard_pending_stop_replies_in_queue (struct remote_state *rs)
5304 struct queue_iter_param param;
5307 param.output = NULL;
5308 /* Discard the stop replies we have already pulled with
5310 QUEUE_iterate (stop_reply_p, stop_reply_queue,
5311 remove_stop_reply_of_remote_state, ¶m);
5314 /* A parameter to pass data in and out. */
5317 remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q,
5318 QUEUE_ITER (stop_reply_p) *iter,
5322 struct queue_iter_param *param = data;
5323 ptid_t *ptid = param->input;
5325 if (ptid_match (event->ptid, *ptid))
5327 param->output = event;
5328 QUEUE_remove_elem (stop_reply_p, q, iter);
5335 /* Remove the first reply in 'stop_reply_queue' which matches
5338 static struct stop_reply *
5339 remote_notif_remove_queued_reply (ptid_t ptid)
5341 struct queue_iter_param param;
5343 param.input = &ptid;
5344 param.output = NULL;
5346 QUEUE_iterate (stop_reply_p, stop_reply_queue,
5347 remote_notif_remove_once_on_match, ¶m);
5349 fprintf_unfiltered (gdb_stdlog,
5350 "notif: discard queued event: 'Stop' in %s\n",
5351 target_pid_to_str (ptid));
5353 return param.output;
5356 /* Look for a queued stop reply belonging to PTID. If one is found,
5357 remove it from the queue, and return it. Returns NULL if none is
5358 found. If there are still queued events left to process, tell the
5359 event loop to get back to target_wait soon. */
5361 static struct stop_reply *
5362 queued_stop_reply (ptid_t ptid)
5364 struct stop_reply *r = remote_notif_remove_queued_reply (ptid);
5366 if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue))
5367 /* There's still at least an event left. */
5368 mark_async_event_handler (remote_async_inferior_event_token);
5373 /* Push a fully parsed stop reply in the stop reply queue. Since we
5374 know that we now have at least one queued event left to pass to the
5375 core side, tell the event loop to get back to target_wait soon. */
5378 push_stop_reply (struct stop_reply *new_event)
5380 QUEUE_enque (stop_reply_p, stop_reply_queue, new_event);
5383 fprintf_unfiltered (gdb_stdlog,
5384 "notif: push 'Stop' %s to queue %d\n",
5385 target_pid_to_str (new_event->ptid),
5386 QUEUE_length (stop_reply_p,
5389 mark_async_event_handler (remote_async_inferior_event_token);
5393 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q,
5394 QUEUE_ITER (stop_reply_p) *iter,
5395 struct stop_reply *event,
5398 ptid_t *ptid = data;
5400 return !(ptid_equal (*ptid, event->ptid)
5401 && event->ws.kind == TARGET_WAITKIND_STOPPED);
5404 /* Returns true if we have a stop reply for PTID. */
5407 peek_stop_reply (ptid_t ptid)
5409 return !QUEUE_iterate (stop_reply_p, stop_reply_queue,
5410 stop_reply_match_ptid_and_ws, &ptid);
5413 /* Parse the stop reply in BUF. Either the function succeeds, and the
5414 result is stored in EVENT, or throws an error. */
5417 remote_parse_stop_reply (char *buf, struct stop_reply *event)
5419 struct remote_arch_state *rsa = get_remote_arch_state ();
5423 event->ptid = null_ptid;
5424 event->rs = get_remote_state ();
5425 event->ws.kind = TARGET_WAITKIND_IGNORE;
5426 event->ws.value.integer = 0;
5427 event->stopped_by_watchpoint_p = 0;
5428 event->regcache = NULL;
5433 case 'T': /* Status with PC, SP, FP, ... */
5434 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5435 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5437 n... = register number
5438 r... = register contents
5441 p = &buf[3]; /* after Txx */
5449 /* If the packet contains a register number, save it in
5450 pnum and set p1 to point to the character following it.
5451 Otherwise p1 points to p. */
5453 /* If this packet is an awatch packet, don't parse the 'a'
5454 as a register number. */
5456 if (strncmp (p, "awatch", strlen("awatch")) != 0
5457 && strncmp (p, "core", strlen ("core") != 0))
5459 /* Read the ``P'' register number. */
5460 pnum = strtol (p, &p_temp, 16);
5466 if (p1 == p) /* No register number present here. */
5468 p1 = strchr (p, ':');
5470 error (_("Malformed packet(a) (missing colon): %s\n\
5473 if (strncmp (p, "thread", p1 - p) == 0)
5474 event->ptid = read_ptid (++p1, &p);
5475 else if ((strncmp (p, "watch", p1 - p) == 0)
5476 || (strncmp (p, "rwatch", p1 - p) == 0)
5477 || (strncmp (p, "awatch", p1 - p) == 0))
5479 event->stopped_by_watchpoint_p = 1;
5480 p = unpack_varlen_hex (++p1, &addr);
5481 event->watch_data_address = (CORE_ADDR) addr;
5483 else if (strncmp (p, "library", p1 - p) == 0)
5487 while (*p_temp && *p_temp != ';')
5490 event->ws.kind = TARGET_WAITKIND_LOADED;
5493 else if (strncmp (p, "replaylog", p1 - p) == 0)
5495 event->ws.kind = TARGET_WAITKIND_NO_HISTORY;
5496 /* p1 will indicate "begin" or "end", but it makes
5497 no difference for now, so ignore it. */
5498 p_temp = strchr (p1 + 1, ';');
5502 else if (strncmp (p, "core", p1 - p) == 0)
5506 p = unpack_varlen_hex (++p1, &c);
5511 /* Silently skip unknown optional info. */
5512 p_temp = strchr (p1 + 1, ';');
5519 struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum);
5520 cached_reg_t cached_reg;
5525 error (_("Malformed packet(b) (missing colon): %s\n\
5531 error (_("Remote sent bad register number %s: %s\n\
5533 hex_string (pnum), p, buf);
5535 cached_reg.num = reg->regnum;
5537 fieldsize = hex2bin (p, cached_reg.data,
5538 register_size (target_gdbarch (),
5541 if (fieldsize < register_size (target_gdbarch (),
5543 warning (_("Remote reply is too short: %s"), buf);
5545 VEC_safe_push (cached_reg_t, event->regcache, &cached_reg);
5549 error (_("Remote register badly formatted: %s\nhere: %s"),
5554 if (event->ws.kind != TARGET_WAITKIND_IGNORE)
5558 case 'S': /* Old style status, just signal only. */
5562 event->ws.kind = TARGET_WAITKIND_STOPPED;
5563 sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]);
5564 if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST)
5565 event->ws.value.sig = (enum gdb_signal) sig;
5567 event->ws.value.sig = GDB_SIGNAL_UNKNOWN;
5570 case 'W': /* Target exited. */
5577 /* GDB used to accept only 2 hex chars here. Stubs should
5578 only send more if they detect GDB supports multi-process
5580 p = unpack_varlen_hex (&buf[1], &value);
5584 /* The remote process exited. */
5585 event->ws.kind = TARGET_WAITKIND_EXITED;
5586 event->ws.value.integer = value;
5590 /* The remote process exited with a signal. */
5591 event->ws.kind = TARGET_WAITKIND_SIGNALLED;
5592 if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST)
5593 event->ws.value.sig = (enum gdb_signal) value;
5595 event->ws.value.sig = GDB_SIGNAL_UNKNOWN;
5598 /* If no process is specified, assume inferior_ptid. */
5599 pid = ptid_get_pid (inferior_ptid);
5608 else if (strncmp (p,
5609 "process:", sizeof ("process:") - 1) == 0)
5613 p += sizeof ("process:") - 1;
5614 unpack_varlen_hex (p, &upid);
5618 error (_("unknown stop reply packet: %s"), buf);
5621 error (_("unknown stop reply packet: %s"), buf);
5622 event->ptid = pid_to_ptid (pid);
5627 if (non_stop && ptid_equal (event->ptid, null_ptid))
5628 error (_("No process or thread specified in stop reply: %s"), buf);
5631 /* When the stub wants to tell GDB about a new notification reply, it
5632 sends a notification (%Stop, for example). Those can come it at
5633 any time, hence, we have to make sure that any pending
5634 putpkt/getpkt sequence we're making is finished, before querying
5635 the stub for more events with the corresponding ack command
5636 (vStopped, for example). E.g., if we started a vStopped sequence
5637 immediately upon receiving the notification, something like this
5645 1.6) <-- (registers reply to step #1.3)
5647 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5650 To solve this, whenever we parse a %Stop notification successfully,
5651 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5652 doing whatever we were doing:
5658 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5659 2.5) <-- (registers reply to step #2.3)
5661 Eventualy after step #2.5, we return to the event loop, which
5662 notices there's an event on the
5663 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5664 associated callback --- the function below. At this point, we're
5665 always safe to start a vStopped sequence. :
5668 2.7) <-- T05 thread:2
5674 remote_notif_get_pending_events (struct notif_client *nc)
5676 struct remote_state *rs = get_remote_state ();
5678 if (rs->notif_state->pending_event[nc->id] != NULL)
5681 fprintf_unfiltered (gdb_stdlog,
5682 "notif: process: '%s' ack pending event\n",
5686 nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]);
5687 rs->notif_state->pending_event[nc->id] = NULL;
5691 getpkt (&rs->buf, &rs->buf_size, 0);
5692 if (strcmp (rs->buf, "OK") == 0)
5695 remote_notif_ack (nc, rs->buf);
5701 fprintf_unfiltered (gdb_stdlog,
5702 "notif: process: '%s' no pending reply\n",
5707 /* Called when it is decided that STOP_REPLY holds the info of the
5708 event that is to be returned to the core. This function always
5709 destroys STOP_REPLY. */
5712 process_stop_reply (struct stop_reply *stop_reply,
5713 struct target_waitstatus *status)
5717 *status = stop_reply->ws;
5718 ptid = stop_reply->ptid;
5720 /* If no thread/process was reported by the stub, assume the current
5722 if (ptid_equal (ptid, null_ptid))
5723 ptid = inferior_ptid;
5725 if (status->kind != TARGET_WAITKIND_EXITED
5726 && status->kind != TARGET_WAITKIND_SIGNALLED)
5728 struct remote_state *rs = get_remote_state ();
5730 /* Expedited registers. */
5731 if (stop_reply->regcache)
5733 struct regcache *regcache
5734 = get_thread_arch_regcache (ptid, target_gdbarch ());
5739 VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg);
5741 regcache_raw_supply (regcache, reg->num, reg->data);
5742 VEC_free (cached_reg_t, stop_reply->regcache);
5745 rs->remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p;
5746 rs->remote_watch_data_address = stop_reply->watch_data_address;
5748 remote_notice_new_inferior (ptid, 0);
5749 demand_private_info (ptid)->core = stop_reply->core;
5752 stop_reply_xfree (stop_reply);
5756 /* The non-stop mode version of target_wait. */
5759 remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options)
5761 struct remote_state *rs = get_remote_state ();
5762 struct stop_reply *stop_reply;
5766 /* If in non-stop mode, get out of getpkt even if a
5767 notification is received. */
5769 ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
5770 0 /* forever */, &is_notif);
5773 if (ret != -1 && !is_notif)
5776 case 'E': /* Error of some sort. */
5777 /* We're out of sync with the target now. Did it continue
5778 or not? We can't tell which thread it was in non-stop,
5779 so just ignore this. */
5780 warning (_("Remote failure reply: %s"), rs->buf);
5782 case 'O': /* Console output. */
5783 remote_console_output (rs->buf + 1);
5786 warning (_("Invalid remote reply: %s"), rs->buf);
5790 /* Acknowledge a pending stop reply that may have arrived in the
5792 if (rs->notif_state->pending_event[notif_client_stop.id] != NULL)
5793 remote_notif_get_pending_events (¬if_client_stop);
5795 /* If indeed we noticed a stop reply, we're done. */
5796 stop_reply = queued_stop_reply (ptid);
5797 if (stop_reply != NULL)
5798 return process_stop_reply (stop_reply, status);
5800 /* Still no event. If we're just polling for an event, then
5801 return to the event loop. */
5802 if (options & TARGET_WNOHANG)
5804 status->kind = TARGET_WAITKIND_IGNORE;
5805 return minus_one_ptid;
5808 /* Otherwise do a blocking wait. */
5809 ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
5810 1 /* forever */, &is_notif);
5814 /* Wait until the remote machine stops, then return, storing status in
5815 STATUS just as `wait' would. */
5818 remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options)
5820 struct remote_state *rs = get_remote_state ();
5821 ptid_t event_ptid = null_ptid;
5823 struct stop_reply *stop_reply;
5827 status->kind = TARGET_WAITKIND_IGNORE;
5828 status->value.integer = 0;
5830 stop_reply = queued_stop_reply (ptid);
5831 if (stop_reply != NULL)
5832 return process_stop_reply (stop_reply, status);
5834 if (rs->cached_wait_status)
5835 /* Use the cached wait status, but only once. */
5836 rs->cached_wait_status = 0;
5842 if (!target_is_async_p ())
5844 ofunc = signal (SIGINT, sync_remote_interrupt);
5845 /* If the user hit C-c before this packet, or between packets,
5846 pretend that it was hit right here. */
5847 if (check_quit_flag ())
5850 sync_remote_interrupt (SIGINT);
5854 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5855 _never_ wait for ever -> test on target_is_async_p().
5856 However, before we do that we need to ensure that the caller
5857 knows how to take the target into/out of async mode. */
5858 ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size,
5859 wait_forever_enabled_p, &is_notif);
5861 if (!target_is_async_p ())
5862 signal (SIGINT, ofunc);
5864 /* GDB gets a notification. Return to core as this event is
5866 if (ret != -1 && is_notif)
5867 return minus_one_ptid;
5872 rs->remote_stopped_by_watchpoint_p = 0;
5874 /* We got something. */
5875 rs->waiting_for_stop_reply = 0;
5877 /* Assume that the target has acknowledged Ctrl-C unless we receive
5878 an 'F' or 'O' packet. */
5879 if (buf[0] != 'F' && buf[0] != 'O')
5880 rs->ctrlc_pending_p = 0;
5884 case 'E': /* Error of some sort. */
5885 /* We're out of sync with the target now. Did it continue or
5886 not? Not is more likely, so report a stop. */
5887 warning (_("Remote failure reply: %s"), buf);
5888 status->kind = TARGET_WAITKIND_STOPPED;
5889 status->value.sig = GDB_SIGNAL_0;
5891 case 'F': /* File-I/O request. */
5892 remote_fileio_request (buf, rs->ctrlc_pending_p);
5893 rs->ctrlc_pending_p = 0;
5895 case 'T': case 'S': case 'X': case 'W':
5897 struct stop_reply *stop_reply
5898 = (struct stop_reply *) remote_notif_parse (¬if_client_stop,
5901 event_ptid = process_stop_reply (stop_reply, status);
5904 case 'O': /* Console output. */
5905 remote_console_output (buf + 1);
5907 /* The target didn't really stop; keep waiting. */
5908 rs->waiting_for_stop_reply = 1;
5912 if (rs->last_sent_signal != GDB_SIGNAL_0)
5914 /* Zero length reply means that we tried 'S' or 'C' and the
5915 remote system doesn't support it. */
5916 target_terminal_ours_for_output ();
5918 ("Can't send signals to this remote system. %s not sent.\n",
5919 gdb_signal_to_name (rs->last_sent_signal));
5920 rs->last_sent_signal = GDB_SIGNAL_0;
5921 target_terminal_inferior ();
5923 strcpy ((char *) buf, rs->last_sent_step ? "s" : "c");
5924 putpkt ((char *) buf);
5926 /* We just told the target to resume, so a stop reply is in
5928 rs->waiting_for_stop_reply = 1;
5931 /* else fallthrough */
5933 warning (_("Invalid remote reply: %s"), buf);
5935 rs->waiting_for_stop_reply = 1;
5939 if (status->kind == TARGET_WAITKIND_IGNORE)
5941 /* Nothing interesting happened. If we're doing a non-blocking
5942 poll, we're done. Otherwise, go back to waiting. */
5943 if (options & TARGET_WNOHANG)
5944 return minus_one_ptid;
5948 else if (status->kind != TARGET_WAITKIND_EXITED
5949 && status->kind != TARGET_WAITKIND_SIGNALLED)
5951 if (!ptid_equal (event_ptid, null_ptid))
5952 record_currthread (rs, event_ptid);
5954 event_ptid = inferior_ptid;
5957 /* A process exit. Invalidate our notion of current thread. */
5958 record_currthread (rs, minus_one_ptid);
5963 /* Wait until the remote machine stops, then return, storing status in
5964 STATUS just as `wait' would. */
5967 remote_wait (struct target_ops *ops,
5968 ptid_t ptid, struct target_waitstatus *status, int options)
5973 event_ptid = remote_wait_ns (ptid, status, options);
5975 event_ptid = remote_wait_as (ptid, status, options);
5977 if (target_can_async_p ())
5979 /* If there are are events left in the queue tell the event loop
5981 if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue))
5982 mark_async_event_handler (remote_async_inferior_event_token);
5988 /* Fetch a single register using a 'p' packet. */
5991 fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg)
5993 struct remote_state *rs = get_remote_state ();
5995 char regp[MAX_REGISTER_SIZE];
5998 if (packet_support (PACKET_p) == PACKET_DISABLE)
6001 if (reg->pnum == -1)
6006 p += hexnumstr (p, reg->pnum);
6009 getpkt (&rs->buf, &rs->buf_size, 0);
6013 switch (packet_ok (buf, &remote_protocol_packets[PACKET_p]))
6017 case PACKET_UNKNOWN:
6020 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6021 gdbarch_register_name (get_regcache_arch (regcache),
6026 /* If this register is unfetchable, tell the regcache. */
6029 regcache_raw_supply (regcache, reg->regnum, NULL);
6033 /* Otherwise, parse and supply the value. */
6039 error (_("fetch_register_using_p: early buf termination"));
6041 regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]);
6044 regcache_raw_supply (regcache, reg->regnum, regp);
6048 /* Fetch the registers included in the target's 'g' packet. */
6051 send_g_packet (void)
6053 struct remote_state *rs = get_remote_state ();
6056 xsnprintf (rs->buf, get_remote_packet_size (), "g");
6057 remote_send (&rs->buf, &rs->buf_size);
6059 /* We can get out of synch in various cases. If the first character
6060 in the buffer is not a hex character, assume that has happened
6061 and try to fetch another packet to read. */
6062 while ((rs->buf[0] < '0' || rs->buf[0] > '9')
6063 && (rs->buf[0] < 'A' || rs->buf[0] > 'F')
6064 && (rs->buf[0] < 'a' || rs->buf[0] > 'f')
6065 && rs->buf[0] != 'x') /* New: unavailable register value. */
6068 fprintf_unfiltered (gdb_stdlog,
6069 "Bad register packet; fetching a new packet\n");
6070 getpkt (&rs->buf, &rs->buf_size, 0);
6073 buf_len = strlen (rs->buf);
6075 /* Sanity check the received packet. */
6076 if (buf_len % 2 != 0)
6077 error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf);
6083 process_g_packet (struct regcache *regcache)
6085 struct gdbarch *gdbarch = get_regcache_arch (regcache);
6086 struct remote_state *rs = get_remote_state ();
6087 struct remote_arch_state *rsa = get_remote_arch_state ();
6092 buf_len = strlen (rs->buf);
6094 /* Further sanity checks, with knowledge of the architecture. */
6095 if (buf_len > 2 * rsa->sizeof_g_packet)
6096 error (_("Remote 'g' packet reply is too long: %s"), rs->buf);
6098 /* Save the size of the packet sent to us by the target. It is used
6099 as a heuristic when determining the max size of packets that the
6100 target can safely receive. */
6101 if (rsa->actual_register_packet_size == 0)
6102 rsa->actual_register_packet_size = buf_len;
6104 /* If this is smaller than we guessed the 'g' packet would be,
6105 update our records. A 'g' reply that doesn't include a register's
6106 value implies either that the register is not available, or that
6107 the 'p' packet must be used. */
6108 if (buf_len < 2 * rsa->sizeof_g_packet)
6110 rsa->sizeof_g_packet = buf_len / 2;
6112 for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
6114 if (rsa->regs[i].pnum == -1)
6117 if (rsa->regs[i].offset >= rsa->sizeof_g_packet)
6118 rsa->regs[i].in_g_packet = 0;
6120 rsa->regs[i].in_g_packet = 1;
6124 regs = alloca (rsa->sizeof_g_packet);
6126 /* Unimplemented registers read as all bits zero. */
6127 memset (regs, 0, rsa->sizeof_g_packet);
6129 /* Reply describes registers byte by byte, each byte encoded as two
6130 hex characters. Suck them all up, then supply them to the
6131 register cacheing/storage mechanism. */
6134 for (i = 0; i < rsa->sizeof_g_packet; i++)
6136 if (p[0] == 0 || p[1] == 0)
6137 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6138 internal_error (__FILE__, __LINE__,
6139 _("unexpected end of 'g' packet reply"));
6141 if (p[0] == 'x' && p[1] == 'x')
6142 regs[i] = 0; /* 'x' */
6144 regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
6148 for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
6150 struct packet_reg *r = &rsa->regs[i];
6154 if (r->offset * 2 >= strlen (rs->buf))
6155 /* This shouldn't happen - we adjusted in_g_packet above. */
6156 internal_error (__FILE__, __LINE__,
6157 _("unexpected end of 'g' packet reply"));
6158 else if (rs->buf[r->offset * 2] == 'x')
6160 gdb_assert (r->offset * 2 < strlen (rs->buf));
6161 /* The register isn't available, mark it as such (at
6162 the same time setting the value to zero). */
6163 regcache_raw_supply (regcache, r->regnum, NULL);
6166 regcache_raw_supply (regcache, r->regnum,
6173 fetch_registers_using_g (struct regcache *regcache)
6176 process_g_packet (regcache);
6179 /* Make the remote selected traceframe match GDB's selected
6183 set_remote_traceframe (void)
6186 struct remote_state *rs = get_remote_state ();
6188 if (rs->remote_traceframe_number == get_traceframe_number ())
6191 /* Avoid recursion, remote_trace_find calls us again. */
6192 rs->remote_traceframe_number = get_traceframe_number ();
6194 newnum = target_trace_find (tfind_number,
6195 get_traceframe_number (), 0, 0, NULL);
6197 /* Should not happen. If it does, all bets are off. */
6198 if (newnum != get_traceframe_number ())
6199 warning (_("could not set remote traceframe"));
6203 remote_fetch_registers (struct target_ops *ops,
6204 struct regcache *regcache, int regnum)
6206 struct remote_arch_state *rsa = get_remote_arch_state ();
6209 set_remote_traceframe ();
6210 set_general_thread (inferior_ptid);
6214 struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum);
6216 gdb_assert (reg != NULL);
6218 /* If this register might be in the 'g' packet, try that first -
6219 we are likely to read more than one register. If this is the
6220 first 'g' packet, we might be overly optimistic about its
6221 contents, so fall back to 'p'. */
6222 if (reg->in_g_packet)
6224 fetch_registers_using_g (regcache);
6225 if (reg->in_g_packet)
6229 if (fetch_register_using_p (regcache, reg))
6232 /* This register is not available. */
6233 regcache_raw_supply (regcache, reg->regnum, NULL);
6238 fetch_registers_using_g (regcache);
6240 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
6241 if (!rsa->regs[i].in_g_packet)
6242 if (!fetch_register_using_p (regcache, &rsa->regs[i]))
6244 /* This register is not available. */
6245 regcache_raw_supply (regcache, i, NULL);
6249 /* Prepare to store registers. Since we may send them all (using a
6250 'G' request), we have to read out the ones we don't want to change
6254 remote_prepare_to_store (struct target_ops *self, struct regcache *regcache)
6256 struct remote_arch_state *rsa = get_remote_arch_state ();
6258 gdb_byte buf[MAX_REGISTER_SIZE];
6260 /* Make sure the entire registers array is valid. */
6261 switch (packet_support (PACKET_P))
6263 case PACKET_DISABLE:
6264 case PACKET_SUPPORT_UNKNOWN:
6265 /* Make sure all the necessary registers are cached. */
6266 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
6267 if (rsa->regs[i].in_g_packet)
6268 regcache_raw_read (regcache, rsa->regs[i].regnum, buf);
6275 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6276 packet was not recognized. */
6279 store_register_using_P (const struct regcache *regcache,
6280 struct packet_reg *reg)
6282 struct gdbarch *gdbarch = get_regcache_arch (regcache);
6283 struct remote_state *rs = get_remote_state ();
6284 /* Try storing a single register. */
6285 char *buf = rs->buf;
6286 gdb_byte regp[MAX_REGISTER_SIZE];
6289 if (packet_support (PACKET_P) == PACKET_DISABLE)
6292 if (reg->pnum == -1)
6295 xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0));
6296 p = buf + strlen (buf);
6297 regcache_raw_collect (regcache, reg->regnum, regp);
6298 bin2hex (regp, p, register_size (gdbarch, reg->regnum));
6300 getpkt (&rs->buf, &rs->buf_size, 0);
6302 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P]))
6307 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6308 gdbarch_register_name (gdbarch, reg->regnum), rs->buf);
6309 case PACKET_UNKNOWN:
6312 internal_error (__FILE__, __LINE__, _("Bad result from packet_ok"));
6316 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6317 contents of the register cache buffer. FIXME: ignores errors. */
6320 store_registers_using_G (const struct regcache *regcache)
6322 struct remote_state *rs = get_remote_state ();
6323 struct remote_arch_state *rsa = get_remote_arch_state ();
6327 /* Extract all the registers in the regcache copying them into a
6332 regs = alloca (rsa->sizeof_g_packet);
6333 memset (regs, 0, rsa->sizeof_g_packet);
6334 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
6336 struct packet_reg *r = &rsa->regs[i];
6339 regcache_raw_collect (regcache, r->regnum, regs + r->offset);
6343 /* Command describes registers byte by byte,
6344 each byte encoded as two hex characters. */
6347 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6349 bin2hex (regs, p, rsa->sizeof_g_packet);
6351 getpkt (&rs->buf, &rs->buf_size, 0);
6352 if (packet_check_result (rs->buf) == PACKET_ERROR)
6353 error (_("Could not write registers; remote failure reply '%s'"),
6357 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6358 of the register cache buffer. FIXME: ignores errors. */
6361 remote_store_registers (struct target_ops *ops,
6362 struct regcache *regcache, int regnum)
6364 struct remote_arch_state *rsa = get_remote_arch_state ();
6367 set_remote_traceframe ();
6368 set_general_thread (inferior_ptid);
6372 struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum);
6374 gdb_assert (reg != NULL);
6376 /* Always prefer to store registers using the 'P' packet if
6377 possible; we often change only a small number of registers.
6378 Sometimes we change a larger number; we'd need help from a
6379 higher layer to know to use 'G'. */
6380 if (store_register_using_P (regcache, reg))
6383 /* For now, don't complain if we have no way to write the
6384 register. GDB loses track of unavailable registers too
6385 easily. Some day, this may be an error. We don't have
6386 any way to read the register, either... */
6387 if (!reg->in_g_packet)
6390 store_registers_using_G (regcache);
6394 store_registers_using_G (regcache);
6396 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
6397 if (!rsa->regs[i].in_g_packet)
6398 if (!store_register_using_P (regcache, &rsa->regs[i]))
6399 /* See above for why we do not issue an error here. */
6404 /* Return the number of hex digits in num. */
6407 hexnumlen (ULONGEST num)
6411 for (i = 0; num != 0; i++)
6417 /* Set BUF to the minimum number of hex digits representing NUM. */
6420 hexnumstr (char *buf, ULONGEST num)
6422 int len = hexnumlen (num);
6424 return hexnumnstr (buf, num, len);
6428 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6431 hexnumnstr (char *buf, ULONGEST num, int width)
6437 for (i = width - 1; i >= 0; i--)
6439 buf[i] = "0123456789abcdef"[(num & 0xf)];
6446 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6449 remote_address_masked (CORE_ADDR addr)
6451 unsigned int address_size = remote_address_size;
6453 /* If "remoteaddresssize" was not set, default to target address size. */
6455 address_size = gdbarch_addr_bit (target_gdbarch ());
6457 if (address_size > 0
6458 && address_size < (sizeof (ULONGEST) * 8))
6460 /* Only create a mask when that mask can safely be constructed
6461 in a ULONGEST variable. */
6464 mask = (mask << address_size) - 1;
6470 /* Determine whether the remote target supports binary downloading.
6471 This is accomplished by sending a no-op memory write of zero length
6472 to the target at the specified address. It does not suffice to send
6473 the whole packet, since many stubs strip the eighth bit and
6474 subsequently compute a wrong checksum, which causes real havoc with
6477 NOTE: This can still lose if the serial line is not eight-bit
6478 clean. In cases like this, the user should clear "remote
6482 check_binary_download (CORE_ADDR addr)
6484 struct remote_state *rs = get_remote_state ();
6486 switch (packet_support (PACKET_X))
6488 case PACKET_DISABLE:
6492 case PACKET_SUPPORT_UNKNOWN:
6498 p += hexnumstr (p, (ULONGEST) addr);
6500 p += hexnumstr (p, (ULONGEST) 0);
6504 putpkt_binary (rs->buf, (int) (p - rs->buf));
6505 getpkt (&rs->buf, &rs->buf_size, 0);
6507 if (rs->buf[0] == '\0')
6510 fprintf_unfiltered (gdb_stdlog,
6511 "binary downloading NOT "
6512 "supported by target\n");
6513 remote_protocol_packets[PACKET_X].support = PACKET_DISABLE;
6518 fprintf_unfiltered (gdb_stdlog,
6519 "binary downloading supported by target\n");
6520 remote_protocol_packets[PACKET_X].support = PACKET_ENABLE;
6527 /* Write memory data directly to the remote machine.
6528 This does not inform the data cache; the data cache uses this.
6529 HEADER is the starting part of the packet.
6530 MEMADDR is the address in the remote memory space.
6531 MYADDR is the address of the buffer in our space.
6532 LEN is the number of bytes.
6533 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6534 should send data as binary ('X'), or hex-encoded ('M').
6536 The function creates packet of the form
6537 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6539 where encoding of <DATA> is termined by PACKET_FORMAT.
6541 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6544 Return the transferred status, error or OK (an
6545 'enum target_xfer_status' value). Save the number of bytes
6546 transferred in *XFERED_LEN. Only transfer a single packet. */
6548 static enum target_xfer_status
6549 remote_write_bytes_aux (const char *header, CORE_ADDR memaddr,
6550 const gdb_byte *myaddr, ULONGEST len,
6551 ULONGEST *xfered_len, char packet_format,
6554 struct remote_state *rs = get_remote_state ();
6564 if (packet_format != 'X' && packet_format != 'M')
6565 internal_error (__FILE__, __LINE__,
6566 _("remote_write_bytes_aux: bad packet format"));
6569 return TARGET_XFER_EOF;
6571 payload_size = get_memory_write_packet_size ();
6573 /* The packet buffer will be large enough for the payload;
6574 get_memory_packet_size ensures this. */
6577 /* Compute the size of the actual payload by subtracting out the
6578 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6580 payload_size -= strlen ("$,:#NN");
6582 /* The comma won't be used. */
6584 header_length = strlen (header);
6585 payload_size -= header_length;
6586 payload_size -= hexnumlen (memaddr);
6588 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6590 strcat (rs->buf, header);
6591 p = rs->buf + strlen (header);
6593 /* Compute a best guess of the number of bytes actually transfered. */
6594 if (packet_format == 'X')
6596 /* Best guess at number of bytes that will fit. */
6597 todo = min (len, payload_size);
6599 payload_size -= hexnumlen (todo);
6600 todo = min (todo, payload_size);
6604 /* Num bytes that will fit. */
6605 todo = min (len, payload_size / 2);
6607 payload_size -= hexnumlen (todo);
6608 todo = min (todo, payload_size / 2);
6612 internal_error (__FILE__, __LINE__,
6613 _("minimum packet size too small to write data"));
6615 /* If we already need another packet, then try to align the end
6616 of this packet to a useful boundary. */
6617 if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len)
6618 todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr;
6620 /* Append "<memaddr>". */
6621 memaddr = remote_address_masked (memaddr);
6622 p += hexnumstr (p, (ULONGEST) memaddr);
6629 /* Append <len>. Retain the location/size of <len>. It may need to
6630 be adjusted once the packet body has been created. */
6632 plenlen = hexnumstr (p, (ULONGEST) todo);
6640 /* Append the packet body. */
6641 if (packet_format == 'X')
6643 /* Binary mode. Send target system values byte by byte, in
6644 increasing byte addresses. Only escape certain critical
6646 payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p,
6647 &nr_bytes, payload_size);
6649 /* If not all TODO bytes fit, then we'll need another packet. Make
6650 a second try to keep the end of the packet aligned. Don't do
6651 this if the packet is tiny. */
6652 if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES)
6656 new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1))
6658 if (new_nr_bytes != nr_bytes)
6659 payload_length = remote_escape_output (myaddr, new_nr_bytes,
6660 (gdb_byte *) p, &nr_bytes,
6664 p += payload_length;
6665 if (use_length && nr_bytes < todo)
6667 /* Escape chars have filled up the buffer prematurely,
6668 and we have actually sent fewer bytes than planned.
6669 Fix-up the length field of the packet. Use the same
6670 number of characters as before. */
6671 plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen);
6672 *plen = ':'; /* overwrite \0 from hexnumnstr() */
6677 /* Normal mode: Send target system values byte by byte, in
6678 increasing byte addresses. Each byte is encoded as a two hex
6680 nr_bytes = bin2hex (myaddr, p, todo);
6684 putpkt_binary (rs->buf, (int) (p - rs->buf));
6685 getpkt (&rs->buf, &rs->buf_size, 0);
6687 if (rs->buf[0] == 'E')
6688 return TARGET_XFER_E_IO;
6690 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6691 fewer bytes than we'd planned. */
6692 *xfered_len = (ULONGEST) nr_bytes;
6693 return TARGET_XFER_OK;
6696 /* Write memory data directly to the remote machine.
6697 This does not inform the data cache; the data cache uses this.
6698 MEMADDR is the address in the remote memory space.
6699 MYADDR is the address of the buffer in our space.
6700 LEN is the number of bytes.
6702 Return the transferred status, error or OK (an
6703 'enum target_xfer_status' value). Save the number of bytes
6704 transferred in *XFERED_LEN. Only transfer a single packet. */
6706 static enum target_xfer_status
6707 remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len,
6708 ULONGEST *xfered_len)
6710 char *packet_format = 0;
6712 /* Check whether the target supports binary download. */
6713 check_binary_download (memaddr);
6715 switch (packet_support (PACKET_X))
6718 packet_format = "X";
6720 case PACKET_DISABLE:
6721 packet_format = "M";
6723 case PACKET_SUPPORT_UNKNOWN:
6724 internal_error (__FILE__, __LINE__,
6725 _("remote_write_bytes: bad internal state"));
6727 internal_error (__FILE__, __LINE__, _("bad switch"));
6730 return remote_write_bytes_aux (packet_format,
6731 memaddr, myaddr, len, xfered_len,
6732 packet_format[0], 1);
6735 /* Read memory data directly from the remote machine.
6736 This does not use the data cache; the data cache uses this.
6737 MEMADDR is the address in the remote memory space.
6738 MYADDR is the address of the buffer in our space.
6739 LEN is the number of bytes.
6741 Return the transferred status, error or OK (an
6742 'enum target_xfer_status' value). Save the number of bytes
6743 transferred in *XFERED_LEN. */
6745 static enum target_xfer_status
6746 remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len,
6747 ULONGEST *xfered_len)
6749 struct remote_state *rs = get_remote_state ();
6750 int max_buf_size; /* Max size of packet output buffer. */
6755 max_buf_size = get_memory_read_packet_size ();
6756 /* The packet buffer will be large enough for the payload;
6757 get_memory_packet_size ensures this. */
6759 /* Number if bytes that will fit. */
6760 todo = min (len, max_buf_size / 2);
6762 /* Construct "m"<memaddr>","<len>". */
6763 memaddr = remote_address_masked (memaddr);
6766 p += hexnumstr (p, (ULONGEST) memaddr);
6768 p += hexnumstr (p, (ULONGEST) todo);
6771 getpkt (&rs->buf, &rs->buf_size, 0);
6772 if (rs->buf[0] == 'E'
6773 && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2])
6774 && rs->buf[3] == '\0')
6775 return TARGET_XFER_E_IO;
6776 /* Reply describes memory byte by byte, each byte encoded as two hex
6779 i = hex2bin (p, myaddr, todo);
6780 /* Return what we have. Let higher layers handle partial reads. */
6781 *xfered_len = (ULONGEST) i;
6782 return TARGET_XFER_OK;
6785 /* Using the set of read-only target sections of remote, read live
6788 For interface/parameters/return description see target.h,
6791 static enum target_xfer_status
6792 remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf,
6793 ULONGEST memaddr, ULONGEST len,
6794 ULONGEST *xfered_len)
6796 struct target_section *secp;
6797 struct target_section_table *table;
6799 secp = target_section_by_addr (ops, memaddr);
6801 && (bfd_get_section_flags (secp->the_bfd_section->owner,
6802 secp->the_bfd_section)
6805 struct target_section *p;
6806 ULONGEST memend = memaddr + len;
6808 table = target_get_section_table (ops);
6810 for (p = table->sections; p < table->sections_end; p++)
6812 if (memaddr >= p->addr)
6814 if (memend <= p->endaddr)
6816 /* Entire transfer is within this section. */
6817 return remote_read_bytes_1 (memaddr, readbuf, len,
6820 else if (memaddr >= p->endaddr)
6822 /* This section ends before the transfer starts. */
6827 /* This section overlaps the transfer. Just do half. */
6828 len = p->endaddr - memaddr;
6829 return remote_read_bytes_1 (memaddr, readbuf, len,
6836 return TARGET_XFER_EOF;
6839 /* Similar to remote_read_bytes_1, but it reads from the remote stub
6840 first if the requested memory is unavailable in traceframe.
6841 Otherwise, fall back to remote_read_bytes_1. */
6843 static enum target_xfer_status
6844 remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr,
6845 gdb_byte *myaddr, ULONGEST len, ULONGEST *xfered_len)
6848 return TARGET_XFER_EOF;
6850 if (get_traceframe_number () != -1)
6852 VEC(mem_range_s) *available;
6854 /* If we fail to get the set of available memory, then the
6855 target does not support querying traceframe info, and so we
6856 attempt reading from the traceframe anyway (assuming the
6857 target implements the old QTro packet then). */
6858 if (traceframe_available_memory (&available, memaddr, len))
6860 struct cleanup *old_chain;
6862 old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available);
6864 if (VEC_empty (mem_range_s, available)
6865 || VEC_index (mem_range_s, available, 0)->start != memaddr)
6867 enum target_xfer_status res;
6869 /* Don't read into the traceframe's available
6871 if (!VEC_empty (mem_range_s, available))
6873 LONGEST oldlen = len;
6875 len = VEC_index (mem_range_s, available, 0)->start - memaddr;
6876 gdb_assert (len <= oldlen);
6879 do_cleanups (old_chain);
6881 /* This goes through the topmost target again. */
6882 res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr,
6884 if (res == TARGET_XFER_OK)
6885 return TARGET_XFER_OK;
6888 /* No use trying further, we know some memory starting
6889 at MEMADDR isn't available. */
6891 return TARGET_XFER_UNAVAILABLE;
6895 /* Don't try to read more than how much is available, in
6896 case the target implements the deprecated QTro packet to
6897 cater for older GDBs (the target's knowledge of read-only
6898 sections may be outdated by now). */
6899 len = VEC_index (mem_range_s, available, 0)->length;
6901 do_cleanups (old_chain);
6905 return remote_read_bytes_1 (memaddr, myaddr, len, xfered_len);
6910 /* Sends a packet with content determined by the printf format string
6911 FORMAT and the remaining arguments, then gets the reply. Returns
6912 whether the packet was a success, a failure, or unknown. */
6914 static enum packet_result
6915 remote_send_printf (const char *format, ...)
6917 struct remote_state *rs = get_remote_state ();
6918 int max_size = get_remote_packet_size ();
6921 va_start (ap, format);
6924 if (vsnprintf (rs->buf, max_size, format, ap) >= max_size)
6925 internal_error (__FILE__, __LINE__, _("Too long remote packet."));
6927 if (putpkt (rs->buf) < 0)
6928 error (_("Communication problem with target."));
6931 getpkt (&rs->buf, &rs->buf_size, 0);
6933 return packet_check_result (rs->buf);
6937 restore_remote_timeout (void *p)
6939 int value = *(int *)p;
6941 remote_timeout = value;
6944 /* Flash writing can take quite some time. We'll set
6945 effectively infinite timeout for flash operations.
6946 In future, we'll need to decide on a better approach. */
6947 static const int remote_flash_timeout = 1000;
6950 remote_flash_erase (struct target_ops *ops,
6951 ULONGEST address, LONGEST length)
6953 int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8;
6954 int saved_remote_timeout = remote_timeout;
6955 enum packet_result ret;
6956 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
6957 &saved_remote_timeout);
6959 remote_timeout = remote_flash_timeout;
6961 ret = remote_send_printf ("vFlashErase:%s,%s",
6962 phex (address, addr_size),
6966 case PACKET_UNKNOWN:
6967 error (_("Remote target does not support flash erase"));
6969 error (_("Error erasing flash with vFlashErase packet"));
6974 do_cleanups (back_to);
6977 static enum target_xfer_status
6978 remote_flash_write (struct target_ops *ops, ULONGEST address,
6979 ULONGEST length, ULONGEST *xfered_len,
6980 const gdb_byte *data)
6982 int saved_remote_timeout = remote_timeout;
6983 enum target_xfer_status ret;
6984 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
6985 &saved_remote_timeout);
6987 remote_timeout = remote_flash_timeout;
6988 ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length,
6990 do_cleanups (back_to);
6996 remote_flash_done (struct target_ops *ops)
6998 int saved_remote_timeout = remote_timeout;
7000 struct cleanup *back_to = make_cleanup (restore_remote_timeout,
7001 &saved_remote_timeout);
7003 remote_timeout = remote_flash_timeout;
7004 ret = remote_send_printf ("vFlashDone");
7005 do_cleanups (back_to);
7009 case PACKET_UNKNOWN:
7010 error (_("Remote target does not support vFlashDone"));
7012 error (_("Error finishing flash operation"));
7019 remote_files_info (struct target_ops *ignore)
7021 puts_filtered ("Debugging a target over a serial line.\n");
7024 /* Stuff for dealing with the packets which are part of this protocol.
7025 See comment at top of file for details. */
7027 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7028 error to higher layers. Called when a serial error is detected.
7029 The exception message is STRING, followed by a colon and a blank,
7030 the system error message for errno at function entry and final dot
7031 for output compatibility with throw_perror_with_name. */
7034 unpush_and_perror (const char *string)
7036 int saved_errno = errno;
7038 remote_unpush_target ();
7039 throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string,
7040 safe_strerror (saved_errno));
7043 /* Read a single character from the remote end. */
7046 readchar (int timeout)
7049 struct remote_state *rs = get_remote_state ();
7051 ch = serial_readchar (rs->remote_desc, timeout);
7056 switch ((enum serial_rc) ch)
7059 remote_unpush_target ();
7060 throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed"));
7063 unpush_and_perror (_("Remote communication error. "
7064 "Target disconnected."));
7066 case SERIAL_TIMEOUT:
7072 /* Wrapper for serial_write that closes the target and throws if
7076 remote_serial_write (const char *str, int len)
7078 struct remote_state *rs = get_remote_state ();
7080 if (serial_write (rs->remote_desc, str, len))
7082 unpush_and_perror (_("Remote communication error. "
7083 "Target disconnected."));
7087 /* Send the command in *BUF to the remote machine, and read the reply
7088 into *BUF. Report an error if we get an error reply. Resize
7089 *BUF using xrealloc if necessary to hold the result, and update
7093 remote_send (char **buf,
7097 getpkt (buf, sizeof_buf, 0);
7099 if ((*buf)[0] == 'E')
7100 error (_("Remote failure reply: %s"), *buf);
7103 /* Return a pointer to an xmalloc'ed string representing an escaped
7104 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7105 etc. The caller is responsible for releasing the returned
7109 escape_buffer (const char *buf, int n)
7111 struct cleanup *old_chain;
7112 struct ui_file *stb;
7115 stb = mem_fileopen ();
7116 old_chain = make_cleanup_ui_file_delete (stb);
7118 fputstrn_unfiltered (buf, n, '\\', stb);
7119 str = ui_file_xstrdup (stb, NULL);
7120 do_cleanups (old_chain);
7124 /* Display a null-terminated packet on stdout, for debugging, using C
7128 print_packet (const char *buf)
7130 puts_filtered ("\"");
7131 fputstr_filtered (buf, '"', gdb_stdout);
7132 puts_filtered ("\"");
7136 putpkt (const char *buf)
7138 return putpkt_binary (buf, strlen (buf));
7141 /* Send a packet to the remote machine, with error checking. The data
7142 of the packet is in BUF. The string in BUF can be at most
7143 get_remote_packet_size () - 5 to account for the $, # and checksum,
7144 and for a possible /0 if we are debugging (remote_debug) and want
7145 to print the sent packet as a string. */
7148 putpkt_binary (const char *buf, int cnt)
7150 struct remote_state *rs = get_remote_state ();
7152 unsigned char csum = 0;
7153 char *buf2 = alloca (cnt + 6);
7160 /* Catch cases like trying to read memory or listing threads while
7161 we're waiting for a stop reply. The remote server wouldn't be
7162 ready to handle this request, so we'd hang and timeout. We don't
7163 have to worry about this in synchronous mode, because in that
7164 case it's not possible to issue a command while the target is
7165 running. This is not a problem in non-stop mode, because in that
7166 case, the stub is always ready to process serial input. */
7167 if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply)
7169 error (_("Cannot execute this command while the target is running.\n"
7170 "Use the \"interrupt\" command to stop the target\n"
7171 "and then try again."));
7174 /* We're sending out a new packet. Make sure we don't look at a
7175 stale cached response. */
7176 rs->cached_wait_status = 0;
7178 /* Copy the packet into buffer BUF2, encapsulating it
7179 and giving it a checksum. */
7184 for (i = 0; i < cnt; i++)
7190 *p++ = tohex ((csum >> 4) & 0xf);
7191 *p++ = tohex (csum & 0xf);
7193 /* Send it over and over until we get a positive ack. */
7197 int started_error_output = 0;
7201 struct cleanup *old_chain;
7205 str = escape_buffer (buf2, p - buf2);
7206 old_chain = make_cleanup (xfree, str);
7207 fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str);
7208 gdb_flush (gdb_stdlog);
7209 do_cleanups (old_chain);
7211 remote_serial_write (buf2, p - buf2);
7213 /* If this is a no acks version of the remote protocol, send the
7214 packet and move on. */
7218 /* Read until either a timeout occurs (-2) or '+' is read.
7219 Handle any notification that arrives in the mean time. */
7222 ch = readchar (remote_timeout);
7230 case SERIAL_TIMEOUT:
7233 if (started_error_output)
7235 putchar_unfiltered ('\n');
7236 started_error_output = 0;
7245 fprintf_unfiltered (gdb_stdlog, "Ack\n");
7249 fprintf_unfiltered (gdb_stdlog, "Nak\n");
7251 case SERIAL_TIMEOUT:
7255 break; /* Retransmit buffer. */
7259 fprintf_unfiltered (gdb_stdlog,
7260 "Packet instead of Ack, ignoring it\n");
7261 /* It's probably an old response sent because an ACK
7262 was lost. Gobble up the packet and ack it so it
7263 doesn't get retransmitted when we resend this
7266 remote_serial_write ("+", 1);
7267 continue; /* Now, go look for +. */
7274 /* If we got a notification, handle it, and go back to looking
7276 /* We've found the start of a notification. Now
7277 collect the data. */
7278 val = read_frame (&rs->buf, &rs->buf_size);
7283 struct cleanup *old_chain;
7286 str = escape_buffer (rs->buf, val);
7287 old_chain = make_cleanup (xfree, str);
7288 fprintf_unfiltered (gdb_stdlog,
7289 " Notification received: %s\n",
7291 do_cleanups (old_chain);
7293 handle_notification (rs->notif_state, rs->buf);
7294 /* We're in sync now, rewait for the ack. */
7301 if (!started_error_output)
7303 started_error_output = 1;
7304 fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
7306 fputc_unfiltered (ch & 0177, gdb_stdlog);
7307 fprintf_unfiltered (gdb_stdlog, "%s", rs->buf);
7316 if (!started_error_output)
7318 started_error_output = 1;
7319 fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
7321 fputc_unfiltered (ch & 0177, gdb_stdlog);
7325 break; /* Here to retransmit. */
7329 /* This is wrong. If doing a long backtrace, the user should be
7330 able to get out next time we call QUIT, without anything as
7331 violent as interrupt_query. If we want to provide a way out of
7332 here without getting to the next QUIT, it should be based on
7333 hitting ^C twice as in remote_wait. */
7344 /* Come here after finding the start of a frame when we expected an
7345 ack. Do our best to discard the rest of this packet. */
7354 c = readchar (remote_timeout);
7357 case SERIAL_TIMEOUT:
7358 /* Nothing we can do. */
7361 /* Discard the two bytes of checksum and stop. */
7362 c = readchar (remote_timeout);
7364 c = readchar (remote_timeout);
7367 case '*': /* Run length encoding. */
7368 /* Discard the repeat count. */
7369 c = readchar (remote_timeout);
7374 /* A regular character. */
7380 /* Come here after finding the start of the frame. Collect the rest
7381 into *BUF, verifying the checksum, length, and handling run-length
7382 compression. NUL terminate the buffer. If there is not enough room,
7383 expand *BUF using xrealloc.
7385 Returns -1 on error, number of characters in buffer (ignoring the
7386 trailing NULL) on success. (could be extended to return one of the
7387 SERIAL status indications). */
7390 read_frame (char **buf_p,
7397 struct remote_state *rs = get_remote_state ();
7404 c = readchar (remote_timeout);
7407 case SERIAL_TIMEOUT:
7409 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog);
7413 fputs_filtered ("Saw new packet start in middle of old one\n",
7415 return -1; /* Start a new packet, count retries. */
7418 unsigned char pktcsum;
7424 check_0 = readchar (remote_timeout);
7426 check_1 = readchar (remote_timeout);
7428 if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT)
7431 fputs_filtered ("Timeout in checksum, retrying\n",
7435 else if (check_0 < 0 || check_1 < 0)
7438 fputs_filtered ("Communication error in checksum\n",
7443 /* Don't recompute the checksum; with no ack packets we
7444 don't have any way to indicate a packet retransmission
7449 pktcsum = (fromhex (check_0) << 4) | fromhex (check_1);
7450 if (csum == pktcsum)
7455 struct cleanup *old_chain;
7458 str = escape_buffer (buf, bc);
7459 old_chain = make_cleanup (xfree, str);
7460 fprintf_unfiltered (gdb_stdlog,
7461 "Bad checksum, sentsum=0x%x, "
7462 "csum=0x%x, buf=%s\n",
7463 pktcsum, csum, str);
7464 do_cleanups (old_chain);
7466 /* Number of characters in buffer ignoring trailing
7470 case '*': /* Run length encoding. */
7475 c = readchar (remote_timeout);
7477 repeat = c - ' ' + 3; /* Compute repeat count. */
7479 /* The character before ``*'' is repeated. */
7481 if (repeat > 0 && repeat <= 255 && bc > 0)
7483 if (bc + repeat - 1 >= *sizeof_buf - 1)
7485 /* Make some more room in the buffer. */
7486 *sizeof_buf += repeat;
7487 *buf_p = xrealloc (*buf_p, *sizeof_buf);
7491 memset (&buf[bc], buf[bc - 1], repeat);
7497 printf_filtered (_("Invalid run length encoding: %s\n"), buf);
7501 if (bc >= *sizeof_buf - 1)
7503 /* Make some more room in the buffer. */
7505 *buf_p = xrealloc (*buf_p, *sizeof_buf);
7516 /* Read a packet from the remote machine, with error checking, and
7517 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7518 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7519 rather than timing out; this is used (in synchronous mode) to wait
7520 for a target that is is executing user code to stop. */
7521 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7522 don't have to change all the calls to getpkt to deal with the
7523 return value, because at the moment I don't know what the right
7524 thing to do it for those. */
7532 timed_out = getpkt_sane (buf, sizeof_buf, forever);
7536 /* Read a packet from the remote machine, with error checking, and
7537 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7538 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7539 rather than timing out; this is used (in synchronous mode) to wait
7540 for a target that is is executing user code to stop. If FOREVER ==
7541 0, this function is allowed to time out gracefully and return an
7542 indication of this to the caller. Otherwise return the number of
7543 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7544 enough reason to return to the caller. *IS_NOTIF is an output
7545 boolean that indicates whether *BUF holds a notification or not
7546 (a regular packet). */
7549 getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever,
7550 int expecting_notif, int *is_notif)
7552 struct remote_state *rs = get_remote_state ();
7558 /* We're reading a new response. Make sure we don't look at a
7559 previously cached response. */
7560 rs->cached_wait_status = 0;
7562 strcpy (*buf, "timeout");
7565 timeout = watchdog > 0 ? watchdog : -1;
7566 else if (expecting_notif)
7567 timeout = 0; /* There should already be a char in the buffer. If
7570 timeout = remote_timeout;
7574 /* Process any number of notifications, and then return when
7578 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7580 for (tries = 1; tries <= MAX_TRIES; tries++)
7582 /* This can loop forever if the remote side sends us
7583 characters continuously, but if it pauses, we'll get
7584 SERIAL_TIMEOUT from readchar because of timeout. Then
7585 we'll count that as a retry.
7587 Note that even when forever is set, we will only wait
7588 forever prior to the start of a packet. After that, we
7589 expect characters to arrive at a brisk pace. They should
7590 show up within remote_timeout intervals. */
7592 c = readchar (timeout);
7593 while (c != SERIAL_TIMEOUT && c != '$' && c != '%');
7595 if (c == SERIAL_TIMEOUT)
7597 if (expecting_notif)
7598 return -1; /* Don't complain, it's normal to not get
7599 anything in this case. */
7601 if (forever) /* Watchdog went off? Kill the target. */
7604 remote_unpush_target ();
7605 throw_error (TARGET_CLOSE_ERROR,
7606 _("Watchdog timeout has expired. "
7607 "Target detached."));
7610 fputs_filtered ("Timed out.\n", gdb_stdlog);
7614 /* We've found the start of a packet or notification.
7615 Now collect the data. */
7616 val = read_frame (buf, sizeof_buf);
7621 remote_serial_write ("-", 1);
7624 if (tries > MAX_TRIES)
7626 /* We have tried hard enough, and just can't receive the
7627 packet/notification. Give up. */
7628 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7630 /* Skip the ack char if we're in no-ack mode. */
7631 if (!rs->noack_mode)
7632 remote_serial_write ("+", 1);
7636 /* If we got an ordinary packet, return that to our caller. */
7641 struct cleanup *old_chain;
7644 str = escape_buffer (*buf, val);
7645 old_chain = make_cleanup (xfree, str);
7646 fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str);
7647 do_cleanups (old_chain);
7650 /* Skip the ack char if we're in no-ack mode. */
7651 if (!rs->noack_mode)
7652 remote_serial_write ("+", 1);
7653 if (is_notif != NULL)
7658 /* If we got a notification, handle it, and go back to looking
7662 gdb_assert (c == '%');
7666 struct cleanup *old_chain;
7669 str = escape_buffer (*buf, val);
7670 old_chain = make_cleanup (xfree, str);
7671 fprintf_unfiltered (gdb_stdlog,
7672 " Notification received: %s\n",
7674 do_cleanups (old_chain);
7676 if (is_notif != NULL)
7679 handle_notification (rs->notif_state, *buf);
7681 /* Notifications require no acknowledgement. */
7683 if (expecting_notif)
7690 getpkt_sane (char **buf, long *sizeof_buf, int forever)
7692 return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL);
7696 getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever,
7699 return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1,
7705 remote_kill (struct target_ops *ops)
7707 volatile struct gdb_exception ex;
7709 /* Catch errors so the user can quit from gdb even when we
7710 aren't on speaking terms with the remote system. */
7711 TRY_CATCH (ex, RETURN_MASK_ERROR)
7717 if (ex.error == TARGET_CLOSE_ERROR)
7719 /* If we got an (EOF) error that caused the target
7720 to go away, then we're done, that's what we wanted.
7721 "k" is susceptible to cause a premature EOF, given
7722 that the remote server isn't actually required to
7723 reply to "k", and it can happen that it doesn't
7724 even get to reply ACK to the "k". */
7728 /* Otherwise, something went wrong. We didn't actually kill
7729 the target. Just propagate the exception, and let the
7730 user or higher layers decide what to do. */
7731 throw_exception (ex);
7734 /* We've killed the remote end, we get to mourn it. Since this is
7735 target remote, single-process, mourning the inferior also
7736 unpushes remote_ops. */
7737 target_mourn_inferior ();
7741 remote_vkill (int pid, struct remote_state *rs)
7743 if (packet_support (PACKET_vKill) == PACKET_DISABLE)
7746 /* Tell the remote target to detach. */
7747 xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid);
7749 getpkt (&rs->buf, &rs->buf_size, 0);
7751 switch (packet_ok (rs->buf,
7752 &remote_protocol_packets[PACKET_vKill]))
7758 case PACKET_UNKNOWN:
7761 internal_error (__FILE__, __LINE__, _("Bad result from packet_ok"));
7766 extended_remote_kill (struct target_ops *ops)
7769 int pid = ptid_get_pid (inferior_ptid);
7770 struct remote_state *rs = get_remote_state ();
7772 res = remote_vkill (pid, rs);
7773 if (res == -1 && !(rs->extended && remote_multi_process_p (rs)))
7775 /* Don't try 'k' on a multi-process aware stub -- it has no way
7776 to specify the pid. */
7780 getpkt (&rs->buf, &rs->buf_size, 0);
7781 if (rs->buf[0] != 'O' || rs->buf[0] != 'K')
7784 /* Don't wait for it to die. I'm not really sure it matters whether
7785 we do or not. For the existing stubs, kill is a noop. */
7791 error (_("Can't kill process"));
7793 target_mourn_inferior ();
7797 remote_mourn (struct target_ops *ops)
7799 remote_mourn_1 (ops);
7802 /* Worker function for remote_mourn. */
7804 remote_mourn_1 (struct target_ops *target)
7806 unpush_target (target);
7808 /* remote_close takes care of doing most of the clean up. */
7809 generic_mourn_inferior ();
7813 extended_remote_mourn_1 (struct target_ops *target)
7815 struct remote_state *rs = get_remote_state ();
7817 /* In case we got here due to an error, but we're going to stay
7819 rs->waiting_for_stop_reply = 0;
7821 /* If the current general thread belonged to the process we just
7822 detached from or has exited, the remote side current general
7823 thread becomes undefined. Considering a case like this:
7825 - We just got here due to a detach.
7826 - The process that we're detaching from happens to immediately
7827 report a global breakpoint being hit in non-stop mode, in the
7828 same thread we had selected before.
7829 - GDB attaches to this process again.
7830 - This event happens to be the next event we handle.
7832 GDB would consider that the current general thread didn't need to
7833 be set on the stub side (with Hg), since for all it knew,
7834 GENERAL_THREAD hadn't changed.
7836 Notice that although in all-stop mode, the remote server always
7837 sets the current thread to the thread reporting the stop event,
7838 that doesn't happen in non-stop mode; in non-stop, the stub *must
7839 not* change the current thread when reporting a breakpoint hit,
7840 due to the decoupling of event reporting and event handling.
7842 To keep things simple, we always invalidate our notion of the
7844 record_currthread (rs, minus_one_ptid);
7846 /* Unlike "target remote", we do not want to unpush the target; then
7847 the next time the user says "run", we won't be connected. */
7849 /* Call common code to mark the inferior as not running. */
7850 generic_mourn_inferior ();
7852 if (!have_inferiors ())
7854 if (!remote_multi_process_p (rs))
7856 /* Check whether the target is running now - some remote stubs
7857 automatically restart after kill. */
7859 getpkt (&rs->buf, &rs->buf_size, 0);
7861 if (rs->buf[0] == 'S' || rs->buf[0] == 'T')
7863 /* Assume that the target has been restarted. Set
7864 inferior_ptid so that bits of core GDB realizes
7865 there's something here, e.g., so that the user can
7866 say "kill" again. */
7867 inferior_ptid = magic_null_ptid;
7874 extended_remote_mourn (struct target_ops *ops)
7876 extended_remote_mourn_1 (ops);
7880 extended_remote_supports_disable_randomization (struct target_ops *self)
7882 return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE;
7886 extended_remote_disable_randomization (int val)
7888 struct remote_state *rs = get_remote_state ();
7891 xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x",
7894 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
7896 error (_("Target does not support QDisableRandomization."));
7897 if (strcmp (reply, "OK") != 0)
7898 error (_("Bogus QDisableRandomization reply from target: %s"), reply);
7902 extended_remote_run (char *args)
7904 struct remote_state *rs = get_remote_state ();
7907 /* If the user has disabled vRun support, or we have detected that
7908 support is not available, do not try it. */
7909 if (packet_support (PACKET_vRun) == PACKET_DISABLE)
7912 strcpy (rs->buf, "vRun;");
7913 len = strlen (rs->buf);
7915 if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ())
7916 error (_("Remote file name too long for run packet"));
7917 len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len,
7918 strlen (remote_exec_file));
7920 gdb_assert (args != NULL);
7923 struct cleanup *back_to;
7927 argv = gdb_buildargv (args);
7928 back_to = make_cleanup_freeargv (argv);
7929 for (i = 0; argv[i] != NULL; i++)
7931 if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ())
7932 error (_("Argument list too long for run packet"));
7933 rs->buf[len++] = ';';
7934 len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len,
7937 do_cleanups (back_to);
7940 rs->buf[len++] = '\0';
7943 getpkt (&rs->buf, &rs->buf_size, 0);
7945 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]))
7948 /* We have a wait response. All is well. */
7950 case PACKET_UNKNOWN:
7953 if (remote_exec_file[0] == '\0')
7954 error (_("Running the default executable on the remote target failed; "
7955 "try \"set remote exec-file\"?"));
7957 error (_("Running \"%s\" on the remote target failed"),
7960 gdb_assert_not_reached (_("bad switch"));
7964 /* In the extended protocol we want to be able to do things like
7965 "run" and have them basically work as expected. So we need
7966 a special create_inferior function. We support changing the
7967 executable file and the command line arguments, but not the
7971 extended_remote_create_inferior (struct target_ops *ops,
7972 char *exec_file, char *args,
7973 char **env, int from_tty)
7977 struct remote_state *rs = get_remote_state ();
7979 /* If running asynchronously, register the target file descriptor
7980 with the event loop. */
7981 if (target_can_async_p ())
7982 target_async (inferior_event_handler, 0);
7984 /* Disable address space randomization if requested (and supported). */
7985 if (extended_remote_supports_disable_randomization (ops))
7986 extended_remote_disable_randomization (disable_randomization);
7988 /* Now restart the remote server. */
7989 run_worked = extended_remote_run (args) != -1;
7992 /* vRun was not supported. Fail if we need it to do what the
7994 if (remote_exec_file[0])
7995 error (_("Remote target does not support \"set remote exec-file\""));
7997 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7999 /* Fall back to "R". */
8000 extended_remote_restart ();
8003 if (!have_inferiors ())
8005 /* Clean up from the last time we ran, before we mark the target
8006 running again. This will mark breakpoints uninserted, and
8007 get_offsets may insert breakpoints. */
8008 init_thread_list ();
8009 init_wait_for_inferior ();
8012 /* vRun's success return is a stop reply. */
8013 stop_reply = run_worked ? rs->buf : NULL;
8014 add_current_inferior_and_thread (stop_reply);
8016 /* Get updated offsets, if the stub uses qOffsets. */
8021 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8022 the list of conditions (in agent expression bytecode format), if any, the
8023 target needs to evaluate. The output is placed into the packet buffer
8024 started from BUF and ended at BUF_END. */
8027 remote_add_target_side_condition (struct gdbarch *gdbarch,
8028 struct bp_target_info *bp_tgt, char *buf,
8031 struct agent_expr *aexpr = NULL;
8034 char *buf_start = buf;
8036 if (VEC_empty (agent_expr_p, bp_tgt->conditions))
8039 buf += strlen (buf);
8040 xsnprintf (buf, buf_end - buf, "%s", ";");
8043 /* Send conditions to the target and free the vector. */
8045 VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr);
8048 xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len);
8049 buf += strlen (buf);
8050 for (i = 0; i < aexpr->len; ++i)
8051 buf = pack_hex_byte (buf, aexpr->buf[i]);
8058 remote_add_target_side_commands (struct gdbarch *gdbarch,
8059 struct bp_target_info *bp_tgt, char *buf)
8061 struct agent_expr *aexpr = NULL;
8064 if (VEC_empty (agent_expr_p, bp_tgt->tcommands))
8067 buf += strlen (buf);
8069 sprintf (buf, ";cmds:%x,", bp_tgt->persist);
8070 buf += strlen (buf);
8072 /* Concatenate all the agent expressions that are commands into the
8075 VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr);
8078 sprintf (buf, "X%x,", aexpr->len);
8079 buf += strlen (buf);
8080 for (i = 0; i < aexpr->len; ++i)
8081 buf = pack_hex_byte (buf, aexpr->buf[i]);
8086 /* Insert a breakpoint. On targets that have software breakpoint
8087 support, we ask the remote target to do the work; on targets
8088 which don't, we insert a traditional memory breakpoint. */
8091 remote_insert_breakpoint (struct target_ops *ops,
8092 struct gdbarch *gdbarch,
8093 struct bp_target_info *bp_tgt)
8095 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8096 If it succeeds, then set the support to PACKET_ENABLE. If it
8097 fails, and the user has explicitly requested the Z support then
8098 report an error, otherwise, mark it disabled and go on. */
8100 if (packet_support (PACKET_Z0) != PACKET_DISABLE)
8102 CORE_ADDR addr = bp_tgt->reqstd_address;
8103 struct remote_state *rs;
8106 struct condition_list *cond = NULL;
8108 /* Make sure the remote is pointing at the right process, if
8110 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8111 set_general_process ();
8113 gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize);
8115 rs = get_remote_state ();
8117 endbuf = rs->buf + get_remote_packet_size ();
8122 addr = (ULONGEST) remote_address_masked (addr);
8123 p += hexnumstr (p, addr);
8124 xsnprintf (p, endbuf - p, ",%d", bpsize);
8126 if (remote_supports_cond_breakpoints (ops))
8127 remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf);
8129 if (remote_can_run_breakpoint_commands (ops))
8130 remote_add_target_side_commands (gdbarch, bp_tgt, p);
8133 getpkt (&rs->buf, &rs->buf_size, 0);
8135 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0]))
8140 bp_tgt->placed_address = addr;
8141 bp_tgt->placed_size = bpsize;
8143 case PACKET_UNKNOWN:
8148 /* If this breakpoint has target-side commands but this stub doesn't
8149 support Z0 packets, throw error. */
8150 if (!VEC_empty (agent_expr_p, bp_tgt->tcommands))
8151 throw_error (NOT_SUPPORTED_ERROR, _("\
8152 Target doesn't support breakpoints that have target side commands."));
8154 return memory_insert_breakpoint (ops, gdbarch, bp_tgt);
8158 remote_remove_breakpoint (struct target_ops *ops,
8159 struct gdbarch *gdbarch,
8160 struct bp_target_info *bp_tgt)
8162 CORE_ADDR addr = bp_tgt->placed_address;
8163 struct remote_state *rs = get_remote_state ();
8165 if (packet_support (PACKET_Z0) != PACKET_DISABLE)
8168 char *endbuf = rs->buf + get_remote_packet_size ();
8170 /* Make sure the remote is pointing at the right process, if
8172 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8173 set_general_process ();
8179 addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address);
8180 p += hexnumstr (p, addr);
8181 xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size);
8184 getpkt (&rs->buf, &rs->buf_size, 0);
8186 return (rs->buf[0] == 'E');
8189 return memory_remove_breakpoint (ops, gdbarch, bp_tgt);
8193 watchpoint_to_Z_packet (int type)
8198 return Z_PACKET_WRITE_WP;
8201 return Z_PACKET_READ_WP;
8204 return Z_PACKET_ACCESS_WP;
8207 internal_error (__FILE__, __LINE__,
8208 _("hw_bp_to_z: bad watchpoint type %d"), type);
8213 remote_insert_watchpoint (struct target_ops *self,
8214 CORE_ADDR addr, int len, int type,
8215 struct expression *cond)
8217 struct remote_state *rs = get_remote_state ();
8218 char *endbuf = rs->buf + get_remote_packet_size ();
8220 enum Z_packet_type packet = watchpoint_to_Z_packet (type);
8222 if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE)
8225 /* Make sure the remote is pointing at the right process, if
8227 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8228 set_general_process ();
8230 xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet);
8231 p = strchr (rs->buf, '\0');
8232 addr = remote_address_masked (addr);
8233 p += hexnumstr (p, (ULONGEST) addr);
8234 xsnprintf (p, endbuf - p, ",%x", len);
8237 getpkt (&rs->buf, &rs->buf_size, 0);
8239 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet]))
8243 case PACKET_UNKNOWN:
8248 internal_error (__FILE__, __LINE__,
8249 _("remote_insert_watchpoint: reached end of function"));
8253 remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr,
8254 CORE_ADDR start, int length)
8256 CORE_ADDR diff = remote_address_masked (addr - start);
8258 return diff < length;
8263 remote_remove_watchpoint (struct target_ops *self,
8264 CORE_ADDR addr, int len, int type,
8265 struct expression *cond)
8267 struct remote_state *rs = get_remote_state ();
8268 char *endbuf = rs->buf + get_remote_packet_size ();
8270 enum Z_packet_type packet = watchpoint_to_Z_packet (type);
8272 if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE)
8275 /* Make sure the remote is pointing at the right process, if
8277 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8278 set_general_process ();
8280 xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet);
8281 p = strchr (rs->buf, '\0');
8282 addr = remote_address_masked (addr);
8283 p += hexnumstr (p, (ULONGEST) addr);
8284 xsnprintf (p, endbuf - p, ",%x", len);
8286 getpkt (&rs->buf, &rs->buf_size, 0);
8288 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet]))
8291 case PACKET_UNKNOWN:
8296 internal_error (__FILE__, __LINE__,
8297 _("remote_remove_watchpoint: reached end of function"));
8301 int remote_hw_watchpoint_limit = -1;
8302 int remote_hw_watchpoint_length_limit = -1;
8303 int remote_hw_breakpoint_limit = -1;
8306 remote_region_ok_for_hw_watchpoint (struct target_ops *self,
8307 CORE_ADDR addr, int len)
8309 if (remote_hw_watchpoint_length_limit == 0)
8311 else if (remote_hw_watchpoint_length_limit < 0)
8313 else if (len <= remote_hw_watchpoint_length_limit)
8320 remote_check_watch_resources (struct target_ops *self,
8321 int type, int cnt, int ot)
8323 if (type == bp_hardware_breakpoint)
8325 if (remote_hw_breakpoint_limit == 0)
8327 else if (remote_hw_breakpoint_limit < 0)
8329 else if (cnt <= remote_hw_breakpoint_limit)
8334 if (remote_hw_watchpoint_limit == 0)
8336 else if (remote_hw_watchpoint_limit < 0)
8340 else if (cnt <= remote_hw_watchpoint_limit)
8347 remote_stopped_by_watchpoint (struct target_ops *ops)
8349 struct remote_state *rs = get_remote_state ();
8351 return rs->remote_stopped_by_watchpoint_p;
8355 remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
8357 struct remote_state *rs = get_remote_state ();
8360 if (remote_stopped_by_watchpoint (target))
8362 *addr_p = rs->remote_watch_data_address;
8371 remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch,
8372 struct bp_target_info *bp_tgt)
8374 CORE_ADDR addr = bp_tgt->reqstd_address;
8375 struct remote_state *rs;
8380 /* The length field should be set to the size of a breakpoint
8381 instruction, even though we aren't inserting one ourselves. */
8383 gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize);
8385 if (packet_support (PACKET_Z1) == PACKET_DISABLE)
8388 /* Make sure the remote is pointing at the right process, if
8390 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8391 set_general_process ();
8393 rs = get_remote_state ();
8395 endbuf = rs->buf + get_remote_packet_size ();
8401 addr = remote_address_masked (addr);
8402 p += hexnumstr (p, (ULONGEST) addr);
8403 xsnprintf (p, endbuf - p, ",%x", bpsize);
8405 if (remote_supports_cond_breakpoints (self))
8406 remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf);
8408 if (remote_can_run_breakpoint_commands (self))
8409 remote_add_target_side_commands (gdbarch, bp_tgt, p);
8412 getpkt (&rs->buf, &rs->buf_size, 0);
8414 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1]))
8417 if (rs->buf[1] == '.')
8419 message = strchr (rs->buf + 2, '.');
8421 error (_("Remote failure reply: %s"), message + 1);
8424 case PACKET_UNKNOWN:
8427 bp_tgt->placed_address = addr;
8428 bp_tgt->placed_size = bpsize;
8431 internal_error (__FILE__, __LINE__,
8432 _("remote_insert_hw_breakpoint: reached end of function"));
8437 remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch,
8438 struct bp_target_info *bp_tgt)
8441 struct remote_state *rs = get_remote_state ();
8443 char *endbuf = rs->buf + get_remote_packet_size ();
8445 if (packet_support (PACKET_Z1) == PACKET_DISABLE)
8448 /* Make sure the remote is pointing at the right process, if
8450 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8451 set_general_process ();
8457 addr = remote_address_masked (bp_tgt->placed_address);
8458 p += hexnumstr (p, (ULONGEST) addr);
8459 xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size);
8462 getpkt (&rs->buf, &rs->buf_size, 0);
8464 switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1]))
8467 case PACKET_UNKNOWN:
8472 internal_error (__FILE__, __LINE__,
8473 _("remote_remove_hw_breakpoint: reached end of function"));
8476 /* Verify memory using the "qCRC:" request. */
8479 remote_verify_memory (struct target_ops *ops,
8480 const gdb_byte *data, CORE_ADDR lma, ULONGEST size)
8482 struct remote_state *rs = get_remote_state ();
8483 unsigned long host_crc, target_crc;
8486 /* It doesn't make sense to use qCRC if the remote target is
8487 connected but not running. */
8488 if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE)
8490 enum packet_result result;
8492 /* Make sure the remote is pointing at the right process. */
8493 set_general_process ();
8495 /* FIXME: assumes lma can fit into long. */
8496 xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx",
8497 (long) lma, (long) size);
8500 /* Be clever; compute the host_crc before waiting for target
8502 host_crc = xcrc32 (data, size, 0xffffffff);
8504 getpkt (&rs->buf, &rs->buf_size, 0);
8506 result = packet_ok (rs->buf,
8507 &remote_protocol_packets[PACKET_qCRC]);
8508 if (result == PACKET_ERROR)
8510 else if (result == PACKET_OK)
8512 for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++)
8513 target_crc = target_crc * 16 + fromhex (*tmp);
8515 return (host_crc == target_crc);
8519 return simple_verify_memory (ops, data, lma, size);
8522 /* compare-sections command
8524 With no arguments, compares each loadable section in the exec bfd
8525 with the same memory range on the target, and reports mismatches.
8526 Useful for verifying the image on the target against the exec file. */
8529 compare_sections_command (char *args, int from_tty)
8532 struct cleanup *old_chain;
8534 const char *sectname;
8543 error (_("command cannot be used without an exec file"));
8545 /* Make sure the remote is pointing at the right process. */
8546 set_general_process ();
8548 if (args != NULL && strcmp (args, "-r") == 0)
8554 for (s = exec_bfd->sections; s; s = s->next)
8556 if (!(s->flags & SEC_LOAD))
8557 continue; /* Skip non-loadable section. */
8559 if (read_only && (s->flags & SEC_READONLY) == 0)
8560 continue; /* Skip writeable sections */
8562 size = bfd_get_section_size (s);
8564 continue; /* Skip zero-length section. */
8566 sectname = bfd_get_section_name (exec_bfd, s);
8567 if (args && strcmp (args, sectname) != 0)
8568 continue; /* Not the section selected by user. */
8570 matched = 1; /* Do this section. */
8573 sectdata = xmalloc (size);
8574 old_chain = make_cleanup (xfree, sectdata);
8575 bfd_get_section_contents (exec_bfd, s, sectdata, 0, size);
8577 res = target_verify_memory (sectdata, lma, size);
8580 error (_("target memory fault, section %s, range %s -- %s"), sectname,
8581 paddress (target_gdbarch (), lma),
8582 paddress (target_gdbarch (), lma + size));
8584 printf_filtered ("Section %s, range %s -- %s: ", sectname,
8585 paddress (target_gdbarch (), lma),
8586 paddress (target_gdbarch (), lma + size));
8588 printf_filtered ("matched.\n");
8591 printf_filtered ("MIS-MATCHED!\n");
8595 do_cleanups (old_chain);
8598 warning (_("One or more sections of the target image does not match\n\
8599 the loaded file\n"));
8600 if (args && !matched)
8601 printf_filtered (_("No loaded section named '%s'.\n"), args);
8604 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8605 into remote target. The number of bytes written to the remote
8606 target is returned, or -1 for error. */
8608 static enum target_xfer_status
8609 remote_write_qxfer (struct target_ops *ops, const char *object_name,
8610 const char *annex, const gdb_byte *writebuf,
8611 ULONGEST offset, LONGEST len, ULONGEST *xfered_len,
8612 struct packet_config *packet)
8616 struct remote_state *rs = get_remote_state ();
8617 int max_size = get_memory_write_packet_size ();
8619 if (packet->support == PACKET_DISABLE)
8620 return TARGET_XFER_E_IO;
8622 /* Insert header. */
8623 i = snprintf (rs->buf, max_size,
8624 "qXfer:%s:write:%s:%s:",
8625 object_name, annex ? annex : "",
8626 phex_nz (offset, sizeof offset));
8627 max_size -= (i + 1);
8629 /* Escape as much data as fits into rs->buf. */
8630 buf_len = remote_escape_output
8631 (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size);
8633 if (putpkt_binary (rs->buf, i + buf_len) < 0
8634 || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0
8635 || packet_ok (rs->buf, packet) != PACKET_OK)
8636 return TARGET_XFER_E_IO;
8638 unpack_varlen_hex (rs->buf, &n);
8641 return TARGET_XFER_OK;
8644 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8645 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8646 number of bytes read is returned, or 0 for EOF, or -1 for error.
8647 The number of bytes read may be less than LEN without indicating an
8648 EOF. PACKET is checked and updated to indicate whether the remote
8649 target supports this object. */
8651 static enum target_xfer_status
8652 remote_read_qxfer (struct target_ops *ops, const char *object_name,
8654 gdb_byte *readbuf, ULONGEST offset, LONGEST len,
8655 ULONGEST *xfered_len,
8656 struct packet_config *packet)
8658 struct remote_state *rs = get_remote_state ();
8659 LONGEST i, n, packet_len;
8661 if (packet->support == PACKET_DISABLE)
8662 return TARGET_XFER_E_IO;
8664 /* Check whether we've cached an end-of-object packet that matches
8666 if (rs->finished_object)
8668 if (strcmp (object_name, rs->finished_object) == 0
8669 && strcmp (annex ? annex : "", rs->finished_annex) == 0
8670 && offset == rs->finished_offset)
8671 return TARGET_XFER_EOF;
8674 /* Otherwise, we're now reading something different. Discard
8676 xfree (rs->finished_object);
8677 xfree (rs->finished_annex);
8678 rs->finished_object = NULL;
8679 rs->finished_annex = NULL;
8682 /* Request only enough to fit in a single packet. The actual data
8683 may not, since we don't know how much of it will need to be escaped;
8684 the target is free to respond with slightly less data. We subtract
8685 five to account for the response type and the protocol frame. */
8686 n = min (get_remote_packet_size () - 5, len);
8687 snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8688 object_name, annex ? annex : "",
8689 phex_nz (offset, sizeof offset),
8690 phex_nz (n, sizeof n));
8691 i = putpkt (rs->buf);
8693 return TARGET_XFER_E_IO;
8696 packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0);
8697 if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK)
8698 return TARGET_XFER_E_IO;
8700 if (rs->buf[0] != 'l' && rs->buf[0] != 'm')
8701 error (_("Unknown remote qXfer reply: %s"), rs->buf);
8703 /* 'm' means there is (or at least might be) more data after this
8704 batch. That does not make sense unless there's at least one byte
8705 of data in this reply. */
8706 if (rs->buf[0] == 'm' && packet_len == 1)
8707 error (_("Remote qXfer reply contained no data."));
8709 /* Got some data. */
8710 i = remote_unescape_input ((gdb_byte *) rs->buf + 1,
8711 packet_len - 1, readbuf, n);
8713 /* 'l' is an EOF marker, possibly including a final block of data,
8714 or possibly empty. If we have the final block of a non-empty
8715 object, record this fact to bypass a subsequent partial read. */
8716 if (rs->buf[0] == 'l' && offset + i > 0)
8718 rs->finished_object = xstrdup (object_name);
8719 rs->finished_annex = xstrdup (annex ? annex : "");
8720 rs->finished_offset = offset + i;
8724 return TARGET_XFER_EOF;
8728 return TARGET_XFER_OK;
8732 static enum target_xfer_status
8733 remote_xfer_partial (struct target_ops *ops, enum target_object object,
8734 const char *annex, gdb_byte *readbuf,
8735 const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
8736 ULONGEST *xfered_len)
8738 struct remote_state *rs;
8743 set_remote_traceframe ();
8744 set_general_thread (inferior_ptid);
8746 rs = get_remote_state ();
8748 /* Handle memory using the standard memory routines. */
8749 if (object == TARGET_OBJECT_MEMORY)
8751 /* If the remote target is connected but not running, we should
8752 pass this request down to a lower stratum (e.g. the executable
8754 if (!target_has_execution)
8755 return TARGET_XFER_EOF;
8757 if (writebuf != NULL)
8758 return remote_write_bytes (offset, writebuf, len, xfered_len);
8760 return remote_read_bytes (ops, offset, readbuf, len, xfered_len);
8763 /* Handle SPU memory using qxfer packets. */
8764 if (object == TARGET_OBJECT_SPU)
8767 return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len,
8768 xfered_len, &remote_protocol_packets
8769 [PACKET_qXfer_spu_read]);
8771 return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len,
8772 xfered_len, &remote_protocol_packets
8773 [PACKET_qXfer_spu_write]);
8776 /* Handle extra signal info using qxfer packets. */
8777 if (object == TARGET_OBJECT_SIGNAL_INFO)
8780 return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len,
8781 xfered_len, &remote_protocol_packets
8782 [PACKET_qXfer_siginfo_read]);
8784 return remote_write_qxfer (ops, "siginfo", annex,
8785 writebuf, offset, len, xfered_len,
8786 &remote_protocol_packets
8787 [PACKET_qXfer_siginfo_write]);
8790 if (object == TARGET_OBJECT_STATIC_TRACE_DATA)
8793 return remote_read_qxfer (ops, "statictrace", annex,
8794 readbuf, offset, len, xfered_len,
8795 &remote_protocol_packets
8796 [PACKET_qXfer_statictrace_read]);
8798 return TARGET_XFER_E_IO;
8801 /* Only handle flash writes. */
8802 if (writebuf != NULL)
8808 case TARGET_OBJECT_FLASH:
8809 return remote_flash_write (ops, offset, len, xfered_len,
8813 return TARGET_XFER_E_IO;
8817 /* Map pre-existing objects onto letters. DO NOT do this for new
8818 objects!!! Instead specify new query packets. */
8821 case TARGET_OBJECT_AVR:
8825 case TARGET_OBJECT_AUXV:
8826 gdb_assert (annex == NULL);
8827 return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len,
8829 &remote_protocol_packets[PACKET_qXfer_auxv]);
8831 case TARGET_OBJECT_AVAILABLE_FEATURES:
8832 return remote_read_qxfer
8833 (ops, "features", annex, readbuf, offset, len, xfered_len,
8834 &remote_protocol_packets[PACKET_qXfer_features]);
8836 case TARGET_OBJECT_LIBRARIES:
8837 return remote_read_qxfer
8838 (ops, "libraries", annex, readbuf, offset, len, xfered_len,
8839 &remote_protocol_packets[PACKET_qXfer_libraries]);
8841 case TARGET_OBJECT_LIBRARIES_SVR4:
8842 return remote_read_qxfer
8843 (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len,
8844 &remote_protocol_packets[PACKET_qXfer_libraries_svr4]);
8846 case TARGET_OBJECT_MEMORY_MAP:
8847 gdb_assert (annex == NULL);
8848 return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len,
8850 &remote_protocol_packets[PACKET_qXfer_memory_map]);
8852 case TARGET_OBJECT_OSDATA:
8853 /* Should only get here if we're connected. */
8854 gdb_assert (rs->remote_desc);
8855 return remote_read_qxfer
8856 (ops, "osdata", annex, readbuf, offset, len, xfered_len,
8857 &remote_protocol_packets[PACKET_qXfer_osdata]);
8859 case TARGET_OBJECT_THREADS:
8860 gdb_assert (annex == NULL);
8861 return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len,
8863 &remote_protocol_packets[PACKET_qXfer_threads]);
8865 case TARGET_OBJECT_TRACEFRAME_INFO:
8866 gdb_assert (annex == NULL);
8867 return remote_read_qxfer
8868 (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len,
8869 &remote_protocol_packets[PACKET_qXfer_traceframe_info]);
8871 case TARGET_OBJECT_FDPIC:
8872 return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len,
8874 &remote_protocol_packets[PACKET_qXfer_fdpic]);
8876 case TARGET_OBJECT_OPENVMS_UIB:
8877 return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len,
8879 &remote_protocol_packets[PACKET_qXfer_uib]);
8881 case TARGET_OBJECT_BTRACE:
8882 return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len,
8884 &remote_protocol_packets[PACKET_qXfer_btrace]);
8887 return TARGET_XFER_E_IO;
8890 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8891 large enough let the caller deal with it. */
8892 if (len < get_remote_packet_size ())
8893 return TARGET_XFER_E_IO;
8894 len = get_remote_packet_size ();
8896 /* Except for querying the minimum buffer size, target must be open. */
8897 if (!rs->remote_desc)
8898 error (_("remote query is only available after target open"));
8900 gdb_assert (annex != NULL);
8901 gdb_assert (readbuf != NULL);
8907 /* We used one buffer char for the remote protocol q command and
8908 another for the query type. As the remote protocol encapsulation
8909 uses 4 chars plus one extra in case we are debugging
8910 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8913 while (annex[i] && (i < (get_remote_packet_size () - 8)))
8915 /* Bad caller may have sent forbidden characters. */
8916 gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#');
8921 gdb_assert (annex[i] == '\0');
8923 i = putpkt (rs->buf);
8925 return TARGET_XFER_E_IO;
8927 getpkt (&rs->buf, &rs->buf_size, 0);
8928 strcpy ((char *) readbuf, rs->buf);
8930 *xfered_len = strlen ((char *) readbuf);
8931 return TARGET_XFER_OK;
8935 remote_search_memory (struct target_ops* ops,
8936 CORE_ADDR start_addr, ULONGEST search_space_len,
8937 const gdb_byte *pattern, ULONGEST pattern_len,
8938 CORE_ADDR *found_addrp)
8940 int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8;
8941 struct remote_state *rs = get_remote_state ();
8942 int max_size = get_memory_write_packet_size ();
8943 struct packet_config *packet =
8944 &remote_protocol_packets[PACKET_qSearch_memory];
8945 /* Number of packet bytes used to encode the pattern;
8946 this could be more than PATTERN_LEN due to escape characters. */
8947 int escaped_pattern_len;
8948 /* Amount of pattern that was encodable in the packet. */
8949 int used_pattern_len;
8952 ULONGEST found_addr;
8954 /* Don't go to the target if we don't have to.
8955 This is done before checking packet->support to avoid the possibility that
8956 a success for this edge case means the facility works in general. */
8957 if (pattern_len > search_space_len)
8959 if (pattern_len == 0)
8961 *found_addrp = start_addr;
8965 /* If we already know the packet isn't supported, fall back to the simple
8966 way of searching memory. */
8968 if (packet_config_support (packet) == PACKET_DISABLE)
8970 /* Target doesn't provided special support, fall back and use the
8971 standard support (copy memory and do the search here). */
8972 return simple_search_memory (ops, start_addr, search_space_len,
8973 pattern, pattern_len, found_addrp);
8976 /* Make sure the remote is pointing at the right process. */
8977 set_general_process ();
8979 /* Insert header. */
8980 i = snprintf (rs->buf, max_size,
8981 "qSearch:memory:%s;%s;",
8982 phex_nz (start_addr, addr_size),
8983 phex_nz (search_space_len, sizeof (search_space_len)));
8984 max_size -= (i + 1);
8986 /* Escape as much data as fits into rs->buf. */
8987 escaped_pattern_len =
8988 remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i,
8989 &used_pattern_len, max_size);
8991 /* Bail if the pattern is too large. */
8992 if (used_pattern_len != pattern_len)
8993 error (_("Pattern is too large to transmit to remote target."));
8995 if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0
8996 || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0
8997 || packet_ok (rs->buf, packet) != PACKET_OK)
8999 /* The request may not have worked because the command is not
9000 supported. If so, fall back to the simple way. */
9001 if (packet->support == PACKET_DISABLE)
9003 return simple_search_memory (ops, start_addr, search_space_len,
9004 pattern, pattern_len, found_addrp);
9009 if (rs->buf[0] == '0')
9011 else if (rs->buf[0] == '1')
9014 if (rs->buf[1] != ',')
9015 error (_("Unknown qSearch:memory reply: %s"), rs->buf);
9016 unpack_varlen_hex (rs->buf + 2, &found_addr);
9017 *found_addrp = found_addr;
9020 error (_("Unknown qSearch:memory reply: %s"), rs->buf);
9026 remote_rcmd (struct target_ops *self, const char *command,
9027 struct ui_file *outbuf)
9029 struct remote_state *rs = get_remote_state ();
9032 if (!rs->remote_desc)
9033 error (_("remote rcmd is only available after target open"));
9035 /* Send a NULL command across as an empty command. */
9036 if (command == NULL)
9039 /* The query prefix. */
9040 strcpy (rs->buf, "qRcmd,");
9041 p = strchr (rs->buf, '\0');
9043 if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/)
9044 > get_remote_packet_size ())
9045 error (_("\"monitor\" command ``%s'' is too long."), command);
9047 /* Encode the actual command. */
9048 bin2hex ((const gdb_byte *) command, p, strlen (command));
9050 if (putpkt (rs->buf) < 0)
9051 error (_("Communication problem with target."));
9053 /* get/display the response */
9058 /* XXX - see also remote_get_noisy_reply(). */
9059 QUIT; /* Allow user to bail out with ^C. */
9061 if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1)
9063 /* Timeout. Continue to (try to) read responses.
9064 This is better than stopping with an error, assuming the stub
9065 is still executing the (long) monitor command.
9066 If needed, the user can interrupt gdb using C-c, obtaining
9067 an effect similar to stop on timeout. */
9072 error (_("Target does not support this command."));
9073 if (buf[0] == 'O' && buf[1] != 'K')
9075 remote_console_output (buf + 1); /* 'O' message from stub. */
9078 if (strcmp (buf, "OK") == 0)
9080 if (strlen (buf) == 3 && buf[0] == 'E'
9081 && isdigit (buf[1]) && isdigit (buf[2]))
9083 error (_("Protocol error with Rcmd"));
9085 for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2)
9087 char c = (fromhex (p[0]) << 4) + fromhex (p[1]);
9089 fputc_unfiltered (c, outbuf);
9095 static VEC(mem_region_s) *
9096 remote_memory_map (struct target_ops *ops)
9098 VEC(mem_region_s) *result = NULL;
9099 char *text = target_read_stralloc (¤t_target,
9100 TARGET_OBJECT_MEMORY_MAP, NULL);
9104 struct cleanup *back_to = make_cleanup (xfree, text);
9106 result = parse_memory_map (text);
9107 do_cleanups (back_to);
9114 packet_command (char *args, int from_tty)
9116 struct remote_state *rs = get_remote_state ();
9118 if (!rs->remote_desc)
9119 error (_("command can only be used with remote target"));
9122 error (_("remote-packet command requires packet text as argument"));
9124 puts_filtered ("sending: ");
9125 print_packet (args);
9126 puts_filtered ("\n");
9129 getpkt (&rs->buf, &rs->buf_size, 0);
9130 puts_filtered ("received: ");
9131 print_packet (rs->buf);
9132 puts_filtered ("\n");
9136 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9138 static void display_thread_info (struct gdb_ext_thread_info *info);
9140 static void threadset_test_cmd (char *cmd, int tty);
9142 static void threadalive_test (char *cmd, int tty);
9144 static void threadlist_test_cmd (char *cmd, int tty);
9146 int get_and_display_threadinfo (threadref *ref);
9148 static void threadinfo_test_cmd (char *cmd, int tty);
9150 static int thread_display_step (threadref *ref, void *context);
9152 static void threadlist_update_test_cmd (char *cmd, int tty);
9154 static void init_remote_threadtests (void);
9156 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9159 threadset_test_cmd (char *cmd, int tty)
9161 int sample_thread = SAMPLE_THREAD;
9163 printf_filtered (_("Remote threadset test\n"));
9164 set_general_thread (sample_thread);
9169 threadalive_test (char *cmd, int tty)
9171 int sample_thread = SAMPLE_THREAD;
9172 int pid = ptid_get_pid (inferior_ptid);
9173 ptid_t ptid = ptid_build (pid, sample_thread, 0);
9175 if (remote_thread_alive (ptid))
9176 printf_filtered ("PASS: Thread alive test\n");
9178 printf_filtered ("FAIL: Thread alive test\n");
9181 void output_threadid (char *title, threadref *ref);
9184 output_threadid (char *title, threadref *ref)
9188 pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */
9190 printf_filtered ("%s %s\n", title, (&hexid[0]));
9194 threadlist_test_cmd (char *cmd, int tty)
9197 threadref nextthread;
9198 int done, result_count;
9199 threadref threadlist[3];
9201 printf_filtered ("Remote Threadlist test\n");
9202 if (!remote_get_threadlist (startflag, &nextthread, 3, &done,
9203 &result_count, &threadlist[0]))
9204 printf_filtered ("FAIL: threadlist test\n");
9207 threadref *scan = threadlist;
9208 threadref *limit = scan + result_count;
9210 while (scan < limit)
9211 output_threadid (" thread ", scan++);
9216 display_thread_info (struct gdb_ext_thread_info *info)
9218 output_threadid ("Threadid: ", &info->threadid);
9219 printf_filtered ("Name: %s\n ", info->shortname);
9220 printf_filtered ("State: %s\n", info->display);
9221 printf_filtered ("other: %s\n\n", info->more_display);
9225 get_and_display_threadinfo (threadref *ref)
9229 struct gdb_ext_thread_info threadinfo;
9231 set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
9232 | TAG_MOREDISPLAY | TAG_DISPLAY;
9233 if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo)))
9234 display_thread_info (&threadinfo);
9239 threadinfo_test_cmd (char *cmd, int tty)
9241 int athread = SAMPLE_THREAD;
9245 int_to_threadref (&thread, athread);
9246 printf_filtered ("Remote Threadinfo test\n");
9247 if (!get_and_display_threadinfo (&thread))
9248 printf_filtered ("FAIL cannot get thread info\n");
9252 thread_display_step (threadref *ref, void *context)
9254 /* output_threadid(" threadstep ",ref); *//* simple test */
9255 return get_and_display_threadinfo (ref);
9259 threadlist_update_test_cmd (char *cmd, int tty)
9261 printf_filtered ("Remote Threadlist update test\n");
9262 remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS);
9266 init_remote_threadtests (void)
9268 add_com ("tlist", class_obscure, threadlist_test_cmd,
9269 _("Fetch and print the remote list of "
9270 "thread identifiers, one pkt only"));
9271 add_com ("tinfo", class_obscure, threadinfo_test_cmd,
9272 _("Fetch and display info about one thread"));
9273 add_com ("tset", class_obscure, threadset_test_cmd,
9274 _("Test setting to a different thread"));
9275 add_com ("tupd", class_obscure, threadlist_update_test_cmd,
9276 _("Iterate through updating all remote thread info"));
9277 add_com ("talive", class_obscure, threadalive_test,
9278 _(" Remote thread alive test "));
9283 /* Convert a thread ID to a string. Returns the string in a static
9287 remote_pid_to_str (struct target_ops *ops, ptid_t ptid)
9289 static char buf[64];
9290 struct remote_state *rs = get_remote_state ();
9292 if (ptid_equal (ptid, null_ptid))
9293 return normal_pid_to_str (ptid);
9294 else if (ptid_is_pid (ptid))
9296 /* Printing an inferior target id. */
9298 /* When multi-process extensions are off, there's no way in the
9299 remote protocol to know the remote process id, if there's any
9300 at all. There's one exception --- when we're connected with
9301 target extended-remote, and we manually attached to a process
9302 with "attach PID". We don't record anywhere a flag that
9303 allows us to distinguish that case from the case of
9304 connecting with extended-remote and the stub already being
9305 attached to a process, and reporting yes to qAttached, hence
9306 no smart special casing here. */
9307 if (!remote_multi_process_p (rs))
9309 xsnprintf (buf, sizeof buf, "Remote target");
9313 return normal_pid_to_str (ptid);
9317 if (ptid_equal (magic_null_ptid, ptid))
9318 xsnprintf (buf, sizeof buf, "Thread <main>");
9319 else if (rs->extended && remote_multi_process_p (rs))
9320 xsnprintf (buf, sizeof buf, "Thread %d.%ld",
9321 ptid_get_pid (ptid), ptid_get_lwp (ptid));
9323 xsnprintf (buf, sizeof buf, "Thread %ld",
9324 ptid_get_lwp (ptid));
9329 /* Get the address of the thread local variable in OBJFILE which is
9330 stored at OFFSET within the thread local storage for thread PTID. */
9333 remote_get_thread_local_address (struct target_ops *ops,
9334 ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset)
9336 if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE)
9338 struct remote_state *rs = get_remote_state ();
9340 char *endp = rs->buf + get_remote_packet_size ();
9341 enum packet_result result;
9343 strcpy (p, "qGetTLSAddr:");
9345 p = write_ptid (p, endp, ptid);
9347 p += hexnumstr (p, offset);
9349 p += hexnumstr (p, lm);
9353 getpkt (&rs->buf, &rs->buf_size, 0);
9354 result = packet_ok (rs->buf,
9355 &remote_protocol_packets[PACKET_qGetTLSAddr]);
9356 if (result == PACKET_OK)
9360 unpack_varlen_hex (rs->buf, &result);
9363 else if (result == PACKET_UNKNOWN)
9364 throw_error (TLS_GENERIC_ERROR,
9365 _("Remote target doesn't support qGetTLSAddr packet"));
9367 throw_error (TLS_GENERIC_ERROR,
9368 _("Remote target failed to process qGetTLSAddr request"));
9371 throw_error (TLS_GENERIC_ERROR,
9372 _("TLS not supported or disabled on this target"));
9377 /* Provide thread local base, i.e. Thread Information Block address.
9378 Returns 1 if ptid is found and thread_local_base is non zero. */
9381 remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr)
9383 if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE)
9385 struct remote_state *rs = get_remote_state ();
9387 char *endp = rs->buf + get_remote_packet_size ();
9388 enum packet_result result;
9390 strcpy (p, "qGetTIBAddr:");
9392 p = write_ptid (p, endp, ptid);
9396 getpkt (&rs->buf, &rs->buf_size, 0);
9397 result = packet_ok (rs->buf,
9398 &remote_protocol_packets[PACKET_qGetTIBAddr]);
9399 if (result == PACKET_OK)
9403 unpack_varlen_hex (rs->buf, &result);
9405 *addr = (CORE_ADDR) result;
9408 else if (result == PACKET_UNKNOWN)
9409 error (_("Remote target doesn't support qGetTIBAddr packet"));
9411 error (_("Remote target failed to process qGetTIBAddr request"));
9414 error (_("qGetTIBAddr not supported or disabled on this target"));
9419 /* Support for inferring a target description based on the current
9420 architecture and the size of a 'g' packet. While the 'g' packet
9421 can have any size (since optional registers can be left off the
9422 end), some sizes are easily recognizable given knowledge of the
9423 approximate architecture. */
9425 struct remote_g_packet_guess
9428 const struct target_desc *tdesc;
9430 typedef struct remote_g_packet_guess remote_g_packet_guess_s;
9431 DEF_VEC_O(remote_g_packet_guess_s);
9433 struct remote_g_packet_data
9435 VEC(remote_g_packet_guess_s) *guesses;
9438 static struct gdbarch_data *remote_g_packet_data_handle;
9441 remote_g_packet_data_init (struct obstack *obstack)
9443 return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data);
9447 register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes,
9448 const struct target_desc *tdesc)
9450 struct remote_g_packet_data *data
9451 = gdbarch_data (gdbarch, remote_g_packet_data_handle);
9452 struct remote_g_packet_guess new_guess, *guess;
9455 gdb_assert (tdesc != NULL);
9458 VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess);
9460 if (guess->bytes == bytes)
9461 internal_error (__FILE__, __LINE__,
9462 _("Duplicate g packet description added for size %d"),
9465 new_guess.bytes = bytes;
9466 new_guess.tdesc = tdesc;
9467 VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess);
9470 /* Return 1 if remote_read_description would do anything on this target
9471 and architecture, 0 otherwise. */
9474 remote_read_description_p (struct target_ops *target)
9476 struct remote_g_packet_data *data
9477 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle);
9479 if (!VEC_empty (remote_g_packet_guess_s, data->guesses))
9485 static const struct target_desc *
9486 remote_read_description (struct target_ops *target)
9488 struct remote_g_packet_data *data
9489 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle);
9491 /* Do not try this during initial connection, when we do not know
9492 whether there is a running but stopped thread. */
9493 if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid))
9494 return target->beneath->to_read_description (target->beneath);
9496 if (!VEC_empty (remote_g_packet_guess_s, data->guesses))
9498 struct remote_g_packet_guess *guess;
9500 int bytes = send_g_packet ();
9503 VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess);
9505 if (guess->bytes == bytes)
9506 return guess->tdesc;
9508 /* We discard the g packet. A minor optimization would be to
9509 hold on to it, and fill the register cache once we have selected
9510 an architecture, but it's too tricky to do safely. */
9513 return target->beneath->to_read_description (target->beneath);
9516 /* Remote file transfer support. This is host-initiated I/O, not
9517 target-initiated; for target-initiated, see remote-fileio.c. */
9519 /* If *LEFT is at least the length of STRING, copy STRING to
9520 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9521 decrease *LEFT. Otherwise raise an error. */
9524 remote_buffer_add_string (char **buffer, int *left, char *string)
9526 int len = strlen (string);
9529 error (_("Packet too long for target."));
9531 memcpy (*buffer, string, len);
9535 /* NUL-terminate the buffer as a convenience, if there is
9541 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9542 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9543 decrease *LEFT. Otherwise raise an error. */
9546 remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes,
9549 if (2 * len > *left)
9550 error (_("Packet too long for target."));
9552 bin2hex (bytes, *buffer, len);
9556 /* NUL-terminate the buffer as a convenience, if there is
9562 /* If *LEFT is large enough, convert VALUE to hex and add it to
9563 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9564 decrease *LEFT. Otherwise raise an error. */
9567 remote_buffer_add_int (char **buffer, int *left, ULONGEST value)
9569 int len = hexnumlen (value);
9572 error (_("Packet too long for target."));
9574 hexnumstr (*buffer, value);
9578 /* NUL-terminate the buffer as a convenience, if there is
9584 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9585 value, *REMOTE_ERRNO to the remote error number or zero if none
9586 was included, and *ATTACHMENT to point to the start of the annex
9587 if any. The length of the packet isn't needed here; there may
9588 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9590 Return 0 if the packet could be parsed, -1 if it could not. If
9591 -1 is returned, the other variables may not be initialized. */
9594 remote_hostio_parse_result (char *buffer, int *retcode,
9595 int *remote_errno, char **attachment)
9602 if (buffer[0] != 'F')
9606 *retcode = strtol (&buffer[1], &p, 16);
9607 if (errno != 0 || p == &buffer[1])
9610 /* Check for ",errno". */
9614 *remote_errno = strtol (p + 1, &p2, 16);
9615 if (errno != 0 || p + 1 == p2)
9620 /* Check for ";attachment". If there is no attachment, the
9621 packet should end here. */
9624 *attachment = p + 1;
9627 else if (*p == '\0')
9633 /* Send a prepared I/O packet to the target and read its response.
9634 The prepared packet is in the global RS->BUF before this function
9635 is called, and the answer is there when we return.
9637 COMMAND_BYTES is the length of the request to send, which may include
9638 binary data. WHICH_PACKET is the packet configuration to check
9639 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9640 is set to the error number and -1 is returned. Otherwise the value
9641 returned by the function is returned.
9643 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9644 attachment is expected; an error will be reported if there's a
9645 mismatch. If one is found, *ATTACHMENT will be set to point into
9646 the packet buffer and *ATTACHMENT_LEN will be set to the
9647 attachment's length. */
9650 remote_hostio_send_command (int command_bytes, int which_packet,
9651 int *remote_errno, char **attachment,
9652 int *attachment_len)
9654 struct remote_state *rs = get_remote_state ();
9655 int ret, bytes_read;
9656 char *attachment_tmp;
9658 if (!rs->remote_desc
9659 || packet_support (which_packet) == PACKET_DISABLE)
9661 *remote_errno = FILEIO_ENOSYS;
9665 putpkt_binary (rs->buf, command_bytes);
9666 bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0);
9668 /* If it timed out, something is wrong. Don't try to parse the
9672 *remote_errno = FILEIO_EINVAL;
9676 switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet]))
9679 *remote_errno = FILEIO_EINVAL;
9681 case PACKET_UNKNOWN:
9682 *remote_errno = FILEIO_ENOSYS;
9688 if (remote_hostio_parse_result (rs->buf, &ret, remote_errno,
9691 *remote_errno = FILEIO_EINVAL;
9695 /* Make sure we saw an attachment if and only if we expected one. */
9696 if ((attachment_tmp == NULL && attachment != NULL)
9697 || (attachment_tmp != NULL && attachment == NULL))
9699 *remote_errno = FILEIO_EINVAL;
9703 /* If an attachment was found, it must point into the packet buffer;
9704 work out how many bytes there were. */
9705 if (attachment_tmp != NULL)
9707 *attachment = attachment_tmp;
9708 *attachment_len = bytes_read - (*attachment - rs->buf);
9714 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9715 remote file descriptor, or -1 if an error occurs (and set
9719 remote_hostio_open (struct target_ops *self,
9720 const char *filename, int flags, int mode,
9723 struct remote_state *rs = get_remote_state ();
9725 int left = get_remote_packet_size () - 1;
9727 remote_buffer_add_string (&p, &left, "vFile:open:");
9729 remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
9731 remote_buffer_add_string (&p, &left, ",");
9733 remote_buffer_add_int (&p, &left, flags);
9734 remote_buffer_add_string (&p, &left, ",");
9736 remote_buffer_add_int (&p, &left, mode);
9738 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open,
9739 remote_errno, NULL, NULL);
9742 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9743 Return the number of bytes written, or -1 if an error occurs (and
9744 set *REMOTE_ERRNO). */
9747 remote_hostio_pwrite (struct target_ops *self,
9748 int fd, const gdb_byte *write_buf, int len,
9749 ULONGEST offset, int *remote_errno)
9751 struct remote_state *rs = get_remote_state ();
9753 int left = get_remote_packet_size ();
9756 remote_buffer_add_string (&p, &left, "vFile:pwrite:");
9758 remote_buffer_add_int (&p, &left, fd);
9759 remote_buffer_add_string (&p, &left, ",");
9761 remote_buffer_add_int (&p, &left, offset);
9762 remote_buffer_add_string (&p, &left, ",");
9764 p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len,
9765 get_remote_packet_size () - (p - rs->buf));
9767 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite,
9768 remote_errno, NULL, NULL);
9771 /* Read up to LEN bytes FD on the remote target into READ_BUF
9772 Return the number of bytes read, or -1 if an error occurs (and
9773 set *REMOTE_ERRNO). */
9776 remote_hostio_pread (struct target_ops *self,
9777 int fd, gdb_byte *read_buf, int len,
9778 ULONGEST offset, int *remote_errno)
9780 struct remote_state *rs = get_remote_state ();
9783 int left = get_remote_packet_size ();
9784 int ret, attachment_len;
9787 remote_buffer_add_string (&p, &left, "vFile:pread:");
9789 remote_buffer_add_int (&p, &left, fd);
9790 remote_buffer_add_string (&p, &left, ",");
9792 remote_buffer_add_int (&p, &left, len);
9793 remote_buffer_add_string (&p, &left, ",");
9795 remote_buffer_add_int (&p, &left, offset);
9797 ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread,
9798 remote_errno, &attachment,
9804 read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len,
9806 if (read_len != ret)
9807 error (_("Read returned %d, but %d bytes."), ret, (int) read_len);
9812 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9813 (and set *REMOTE_ERRNO). */
9816 remote_hostio_close (struct target_ops *self, int fd, int *remote_errno)
9818 struct remote_state *rs = get_remote_state ();
9820 int left = get_remote_packet_size () - 1;
9822 remote_buffer_add_string (&p, &left, "vFile:close:");
9824 remote_buffer_add_int (&p, &left, fd);
9826 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close,
9827 remote_errno, NULL, NULL);
9830 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9831 occurs (and set *REMOTE_ERRNO). */
9834 remote_hostio_unlink (struct target_ops *self,
9835 const char *filename, int *remote_errno)
9837 struct remote_state *rs = get_remote_state ();
9839 int left = get_remote_packet_size () - 1;
9841 remote_buffer_add_string (&p, &left, "vFile:unlink:");
9843 remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
9846 return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink,
9847 remote_errno, NULL, NULL);
9850 /* Read value of symbolic link FILENAME on the remote target. Return
9851 a null-terminated string allocated via xmalloc, or NULL if an error
9852 occurs (and set *REMOTE_ERRNO). */
9855 remote_hostio_readlink (struct target_ops *self,
9856 const char *filename, int *remote_errno)
9858 struct remote_state *rs = get_remote_state ();
9861 int left = get_remote_packet_size ();
9862 int len, attachment_len;
9866 remote_buffer_add_string (&p, &left, "vFile:readlink:");
9868 remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
9871 len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink,
9872 remote_errno, &attachment,
9878 ret = xmalloc (len + 1);
9880 read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len,
9881 (gdb_byte *) ret, len);
9882 if (read_len != len)
9883 error (_("Readlink returned %d, but %d bytes."), len, read_len);
9890 remote_fileio_errno_to_host (int errnum)
9914 case FILEIO_ENOTDIR:
9934 case FILEIO_ENAMETOOLONG:
9935 return ENAMETOOLONG;
9941 remote_hostio_error (int errnum)
9943 int host_error = remote_fileio_errno_to_host (errnum);
9945 if (host_error == -1)
9946 error (_("Unknown remote I/O error %d"), errnum);
9948 error (_("Remote I/O error: %s"), safe_strerror (host_error));
9952 remote_hostio_close_cleanup (void *opaque)
9954 int fd = *(int *) opaque;
9957 remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno);
9962 remote_bfd_iovec_open (struct bfd *abfd, void *open_closure)
9964 const char *filename = bfd_get_filename (abfd);
9965 int fd, remote_errno;
9968 gdb_assert (remote_filename_p (filename));
9970 fd = remote_hostio_open (find_target_at (process_stratum),
9971 filename + 7, FILEIO_O_RDONLY, 0, &remote_errno);
9974 errno = remote_fileio_errno_to_host (remote_errno);
9975 bfd_set_error (bfd_error_system_call);
9979 stream = xmalloc (sizeof (int));
9985 remote_bfd_iovec_close (struct bfd *abfd, void *stream)
9987 int fd = *(int *)stream;
9992 /* Ignore errors on close; these may happen if the remote
9993 connection was already torn down. */
9994 remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno);
9996 /* Zero means success. */
10001 remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf,
10002 file_ptr nbytes, file_ptr offset)
10004 int fd = *(int *)stream;
10006 file_ptr pos, bytes;
10009 while (nbytes > pos)
10011 bytes = remote_hostio_pread (find_target_at (process_stratum),
10012 fd, (gdb_byte *) buf + pos, nbytes - pos,
10013 offset + pos, &remote_errno);
10015 /* Success, but no bytes, means end-of-file. */
10019 errno = remote_fileio_errno_to_host (remote_errno);
10020 bfd_set_error (bfd_error_system_call);
10031 remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb)
10033 /* FIXME: We should probably implement remote_hostio_stat. */
10034 sb->st_size = INT_MAX;
10039 remote_filename_p (const char *filename)
10041 return strncmp (filename,
10042 REMOTE_SYSROOT_PREFIX,
10043 sizeof (REMOTE_SYSROOT_PREFIX) - 1) == 0;
10047 remote_bfd_open (const char *remote_file, const char *target)
10049 bfd *abfd = gdb_bfd_openr_iovec (remote_file, target,
10050 remote_bfd_iovec_open, NULL,
10051 remote_bfd_iovec_pread,
10052 remote_bfd_iovec_close,
10053 remote_bfd_iovec_stat);
10059 remote_file_put (const char *local_file, const char *remote_file, int from_tty)
10061 struct cleanup *back_to, *close_cleanup;
10062 int retcode, fd, remote_errno, bytes, io_size;
10065 int bytes_in_buffer;
10068 struct remote_state *rs = get_remote_state ();
10070 if (!rs->remote_desc)
10071 error (_("command can only be used with remote target"));
10073 file = gdb_fopen_cloexec (local_file, "rb");
10075 perror_with_name (local_file);
10076 back_to = make_cleanup_fclose (file);
10078 fd = remote_hostio_open (find_target_at (process_stratum),
10079 remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT
10081 0700, &remote_errno);
10083 remote_hostio_error (remote_errno);
10085 /* Send up to this many bytes at once. They won't all fit in the
10086 remote packet limit, so we'll transfer slightly fewer. */
10087 io_size = get_remote_packet_size ();
10088 buffer = xmalloc (io_size);
10089 make_cleanup (xfree, buffer);
10091 close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd);
10093 bytes_in_buffer = 0;
10096 while (bytes_in_buffer || !saw_eof)
10100 bytes = fread (buffer + bytes_in_buffer, 1,
10101 io_size - bytes_in_buffer,
10106 error (_("Error reading %s."), local_file);
10109 /* EOF. Unless there is something still in the
10110 buffer from the last iteration, we are done. */
10112 if (bytes_in_buffer == 0)
10120 bytes += bytes_in_buffer;
10121 bytes_in_buffer = 0;
10123 retcode = remote_hostio_pwrite (find_target_at (process_stratum),
10125 offset, &remote_errno);
10128 remote_hostio_error (remote_errno);
10129 else if (retcode == 0)
10130 error (_("Remote write of %d bytes returned 0!"), bytes);
10131 else if (retcode < bytes)
10133 /* Short write. Save the rest of the read data for the next
10135 bytes_in_buffer = bytes - retcode;
10136 memmove (buffer, buffer + retcode, bytes_in_buffer);
10142 discard_cleanups (close_cleanup);
10143 if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno))
10144 remote_hostio_error (remote_errno);
10147 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file);
10148 do_cleanups (back_to);
10152 remote_file_get (const char *remote_file, const char *local_file, int from_tty)
10154 struct cleanup *back_to, *close_cleanup;
10155 int fd, remote_errno, bytes, io_size;
10159 struct remote_state *rs = get_remote_state ();
10161 if (!rs->remote_desc)
10162 error (_("command can only be used with remote target"));
10164 fd = remote_hostio_open (find_target_at (process_stratum),
10165 remote_file, FILEIO_O_RDONLY, 0, &remote_errno);
10167 remote_hostio_error (remote_errno);
10169 file = gdb_fopen_cloexec (local_file, "wb");
10171 perror_with_name (local_file);
10172 back_to = make_cleanup_fclose (file);
10174 /* Send up to this many bytes at once. They won't all fit in the
10175 remote packet limit, so we'll transfer slightly fewer. */
10176 io_size = get_remote_packet_size ();
10177 buffer = xmalloc (io_size);
10178 make_cleanup (xfree, buffer);
10180 close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd);
10185 bytes = remote_hostio_pread (find_target_at (process_stratum),
10186 fd, buffer, io_size, offset, &remote_errno);
10188 /* Success, but no bytes, means end-of-file. */
10191 remote_hostio_error (remote_errno);
10195 bytes = fwrite (buffer, 1, bytes, file);
10197 perror_with_name (local_file);
10200 discard_cleanups (close_cleanup);
10201 if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno))
10202 remote_hostio_error (remote_errno);
10205 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file);
10206 do_cleanups (back_to);
10210 remote_file_delete (const char *remote_file, int from_tty)
10212 int retcode, remote_errno;
10213 struct remote_state *rs = get_remote_state ();
10215 if (!rs->remote_desc)
10216 error (_("command can only be used with remote target"));
10218 retcode = remote_hostio_unlink (find_target_at (process_stratum),
10219 remote_file, &remote_errno);
10221 remote_hostio_error (remote_errno);
10224 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file);
10228 remote_put_command (char *args, int from_tty)
10230 struct cleanup *back_to;
10234 error_no_arg (_("file to put"));
10236 argv = gdb_buildargv (args);
10237 back_to = make_cleanup_freeargv (argv);
10238 if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL)
10239 error (_("Invalid parameters to remote put"));
10241 remote_file_put (argv[0], argv[1], from_tty);
10243 do_cleanups (back_to);
10247 remote_get_command (char *args, int from_tty)
10249 struct cleanup *back_to;
10253 error_no_arg (_("file to get"));
10255 argv = gdb_buildargv (args);
10256 back_to = make_cleanup_freeargv (argv);
10257 if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL)
10258 error (_("Invalid parameters to remote get"));
10260 remote_file_get (argv[0], argv[1], from_tty);
10262 do_cleanups (back_to);
10266 remote_delete_command (char *args, int from_tty)
10268 struct cleanup *back_to;
10272 error_no_arg (_("file to delete"));
10274 argv = gdb_buildargv (args);
10275 back_to = make_cleanup_freeargv (argv);
10276 if (argv[0] == NULL || argv[1] != NULL)
10277 error (_("Invalid parameters to remote delete"));
10279 remote_file_delete (argv[0], from_tty);
10281 do_cleanups (back_to);
10285 remote_command (char *args, int from_tty)
10287 help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout);
10291 remote_can_execute_reverse (struct target_ops *self)
10293 if (packet_support (PACKET_bs) == PACKET_ENABLE
10294 || packet_support (PACKET_bc) == PACKET_ENABLE)
10301 remote_supports_non_stop (struct target_ops *self)
10307 remote_supports_disable_randomization (struct target_ops *self)
10309 /* Only supported in extended mode. */
10314 remote_supports_multi_process (struct target_ops *self)
10316 struct remote_state *rs = get_remote_state ();
10318 /* Only extended-remote handles being attached to multiple
10319 processes, even though plain remote can use the multi-process
10320 thread id extensions, so that GDB knows the target process's
10322 return rs->extended && remote_multi_process_p (rs);
10326 remote_supports_cond_tracepoints (void)
10328 return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE;
10332 remote_supports_cond_breakpoints (struct target_ops *self)
10334 return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE;
10338 remote_supports_fast_tracepoints (void)
10340 return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE;
10344 remote_supports_static_tracepoints (void)
10346 return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE;
10350 remote_supports_install_in_trace (void)
10352 return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE;
10356 remote_supports_enable_disable_tracepoint (struct target_ops *self)
10358 return (packet_support (PACKET_EnableDisableTracepoints_feature)
10363 remote_supports_string_tracing (struct target_ops *self)
10365 return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE;
10369 remote_can_run_breakpoint_commands (struct target_ops *self)
10371 return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE;
10375 remote_trace_init (struct target_ops *self)
10378 remote_get_noisy_reply (&target_buf, &target_buf_size);
10379 if (strcmp (target_buf, "OK") != 0)
10380 error (_("Target does not support this command."));
10383 static void free_actions_list (char **actions_list);
10384 static void free_actions_list_cleanup_wrapper (void *);
10386 free_actions_list_cleanup_wrapper (void *al)
10388 free_actions_list (al);
10392 free_actions_list (char **actions_list)
10396 if (actions_list == 0)
10399 for (ndx = 0; actions_list[ndx]; ndx++)
10400 xfree (actions_list[ndx]);
10402 xfree (actions_list);
10405 /* Recursive routine to walk through command list including loops, and
10406 download packets for each command. */
10409 remote_download_command_source (int num, ULONGEST addr,
10410 struct command_line *cmds)
10412 struct remote_state *rs = get_remote_state ();
10413 struct command_line *cmd;
10415 for (cmd = cmds; cmd; cmd = cmd->next)
10417 QUIT; /* Allow user to bail out with ^C. */
10418 strcpy (rs->buf, "QTDPsrc:");
10419 encode_source_string (num, addr, "cmd", cmd->line,
10420 rs->buf + strlen (rs->buf),
10421 rs->buf_size - strlen (rs->buf));
10423 remote_get_noisy_reply (&target_buf, &target_buf_size);
10424 if (strcmp (target_buf, "OK"))
10425 warning (_("Target does not support source download."));
10427 if (cmd->control_type == while_control
10428 || cmd->control_type == while_stepping_control)
10430 remote_download_command_source (num, addr, *cmd->body_list);
10432 QUIT; /* Allow user to bail out with ^C. */
10433 strcpy (rs->buf, "QTDPsrc:");
10434 encode_source_string (num, addr, "cmd", "end",
10435 rs->buf + strlen (rs->buf),
10436 rs->buf_size - strlen (rs->buf));
10438 remote_get_noisy_reply (&target_buf, &target_buf_size);
10439 if (strcmp (target_buf, "OK"))
10440 warning (_("Target does not support source download."));
10446 remote_download_tracepoint (struct target_ops *self, struct bp_location *loc)
10448 #define BUF_SIZE 2048
10452 char buf[BUF_SIZE];
10453 char **tdp_actions;
10454 char **stepping_actions;
10456 struct cleanup *old_chain = NULL;
10457 struct agent_expr *aexpr;
10458 struct cleanup *aexpr_chain = NULL;
10460 struct breakpoint *b = loc->owner;
10461 struct tracepoint *t = (struct tracepoint *) b;
10463 encode_actions_rsp (loc, &tdp_actions, &stepping_actions);
10464 old_chain = make_cleanup (free_actions_list_cleanup_wrapper,
10466 (void) make_cleanup (free_actions_list_cleanup_wrapper,
10469 tpaddr = loc->address;
10470 sprintf_vma (addrbuf, tpaddr);
10471 xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number,
10472 addrbuf, /* address */
10473 (b->enable_state == bp_enabled ? 'E' : 'D'),
10474 t->step_count, t->pass_count);
10475 /* Fast tracepoints are mostly handled by the target, but we can
10476 tell the target how big of an instruction block should be moved
10478 if (b->type == bp_fast_tracepoint)
10480 /* Only test for support at download time; we may not know
10481 target capabilities at definition time. */
10482 if (remote_supports_fast_tracepoints ())
10486 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10487 tpaddr, &isize, NULL))
10488 xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x",
10491 /* If it passed validation at definition but fails now,
10492 something is very wrong. */
10493 internal_error (__FILE__, __LINE__,
10494 _("Fast tracepoint not "
10495 "valid during download"));
10498 /* Fast tracepoints are functionally identical to regular
10499 tracepoints, so don't take lack of support as a reason to
10500 give up on the trace run. */
10501 warning (_("Target does not support fast tracepoints, "
10502 "downloading %d as regular tracepoint"), b->number);
10504 else if (b->type == bp_static_tracepoint)
10506 /* Only test for support at download time; we may not know
10507 target capabilities at definition time. */
10508 if (remote_supports_static_tracepoints ())
10510 struct static_tracepoint_marker marker;
10512 if (target_static_tracepoint_marker_at (tpaddr, &marker))
10513 strcat (buf, ":S");
10515 error (_("Static tracepoint not valid during download"));
10518 /* Fast tracepoints are functionally identical to regular
10519 tracepoints, so don't take lack of support as a reason
10520 to give up on the trace run. */
10521 error (_("Target does not support static tracepoints"));
10523 /* If the tracepoint has a conditional, make it into an agent
10524 expression and append to the definition. */
10527 /* Only test support at download time, we may not know target
10528 capabilities at definition time. */
10529 if (remote_supports_cond_tracepoints ())
10531 aexpr = gen_eval_for_expr (tpaddr, loc->cond);
10532 aexpr_chain = make_cleanup_free_agent_expr (aexpr);
10533 xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,",
10535 pkt = buf + strlen (buf);
10536 for (ndx = 0; ndx < aexpr->len; ++ndx)
10537 pkt = pack_hex_byte (pkt, aexpr->buf[ndx]);
10539 do_cleanups (aexpr_chain);
10542 warning (_("Target does not support conditional tracepoints, "
10543 "ignoring tp %d cond"), b->number);
10546 if (b->commands || *default_collect)
10549 remote_get_noisy_reply (&target_buf, &target_buf_size);
10550 if (strcmp (target_buf, "OK"))
10551 error (_("Target does not support tracepoints."));
10553 /* do_single_steps (t); */
10556 for (ndx = 0; tdp_actions[ndx]; ndx++)
10558 QUIT; /* Allow user to bail out with ^C. */
10559 xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c",
10560 b->number, addrbuf, /* address */
10562 ((tdp_actions[ndx + 1] || stepping_actions)
10565 remote_get_noisy_reply (&target_buf,
10567 if (strcmp (target_buf, "OK"))
10568 error (_("Error on target while setting tracepoints."));
10571 if (stepping_actions)
10573 for (ndx = 0; stepping_actions[ndx]; ndx++)
10575 QUIT; /* Allow user to bail out with ^C. */
10576 xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s",
10577 b->number, addrbuf, /* address */
10578 ((ndx == 0) ? "S" : ""),
10579 stepping_actions[ndx],
10580 (stepping_actions[ndx + 1] ? "-" : ""));
10582 remote_get_noisy_reply (&target_buf,
10584 if (strcmp (target_buf, "OK"))
10585 error (_("Error on target while setting tracepoints."));
10589 if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE)
10591 if (b->addr_string)
10593 strcpy (buf, "QTDPsrc:");
10594 encode_source_string (b->number, loc->address,
10595 "at", b->addr_string, buf + strlen (buf),
10596 2048 - strlen (buf));
10599 remote_get_noisy_reply (&target_buf, &target_buf_size);
10600 if (strcmp (target_buf, "OK"))
10601 warning (_("Target does not support source download."));
10603 if (b->cond_string)
10605 strcpy (buf, "QTDPsrc:");
10606 encode_source_string (b->number, loc->address,
10607 "cond", b->cond_string, buf + strlen (buf),
10608 2048 - strlen (buf));
10610 remote_get_noisy_reply (&target_buf, &target_buf_size);
10611 if (strcmp (target_buf, "OK"))
10612 warning (_("Target does not support source download."));
10614 remote_download_command_source (b->number, loc->address,
10615 breakpoint_commands (b));
10618 do_cleanups (old_chain);
10622 remote_can_download_tracepoint (struct target_ops *self)
10624 struct remote_state *rs = get_remote_state ();
10625 struct trace_status *ts;
10628 /* Don't try to install tracepoints until we've relocated our
10629 symbols, and fetched and merged the target's tracepoint list with
10631 if (rs->starting_up)
10634 ts = current_trace_status ();
10635 status = remote_get_trace_status (self, ts);
10637 if (status == -1 || !ts->running_known || !ts->running)
10640 /* If we are in a tracing experiment, but remote stub doesn't support
10641 installing tracepoint in trace, we have to return. */
10642 if (!remote_supports_install_in_trace ())
10650 remote_download_trace_state_variable (struct target_ops *self,
10651 struct trace_state_variable *tsv)
10653 struct remote_state *rs = get_remote_state ();
10656 xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10657 tsv->number, phex ((ULONGEST) tsv->initial_value, 8),
10659 p = rs->buf + strlen (rs->buf);
10660 if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ())
10661 error (_("Trace state variable name too long for tsv definition packet"));
10662 p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name));
10665 remote_get_noisy_reply (&target_buf, &target_buf_size);
10666 if (*target_buf == '\0')
10667 error (_("Target does not support this command."));
10668 if (strcmp (target_buf, "OK") != 0)
10669 error (_("Error on target while downloading trace state variable."));
10673 remote_enable_tracepoint (struct target_ops *self,
10674 struct bp_location *location)
10676 struct remote_state *rs = get_remote_state ();
10679 sprintf_vma (addr_buf, location->address);
10680 xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s",
10681 location->owner->number, addr_buf);
10683 remote_get_noisy_reply (&rs->buf, &rs->buf_size);
10684 if (*rs->buf == '\0')
10685 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10686 if (strcmp (rs->buf, "OK") != 0)
10687 error (_("Error on target while enabling tracepoint."));
10691 remote_disable_tracepoint (struct target_ops *self,
10692 struct bp_location *location)
10694 struct remote_state *rs = get_remote_state ();
10697 sprintf_vma (addr_buf, location->address);
10698 xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s",
10699 location->owner->number, addr_buf);
10701 remote_get_noisy_reply (&rs->buf, &rs->buf_size);
10702 if (*rs->buf == '\0')
10703 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10704 if (strcmp (rs->buf, "OK") != 0)
10705 error (_("Error on target while disabling tracepoint."));
10709 remote_trace_set_readonly_regions (struct target_ops *self)
10713 bfd_size_type size;
10719 return; /* No information to give. */
10721 strcpy (target_buf, "QTro");
10722 offset = strlen (target_buf);
10723 for (s = exec_bfd->sections; s; s = s->next)
10725 char tmp1[40], tmp2[40];
10728 if ((s->flags & SEC_LOAD) == 0 ||
10729 /* (s->flags & SEC_CODE) == 0 || */
10730 (s->flags & SEC_READONLY) == 0)
10734 vma = bfd_get_section_vma (abfd, s);
10735 size = bfd_get_section_size (s);
10736 sprintf_vma (tmp1, vma);
10737 sprintf_vma (tmp2, vma + size);
10738 sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2);
10739 if (offset + sec_length + 1 > target_buf_size)
10741 if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE)
10743 Too many sections for read-only sections definition packet."));
10746 xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s",
10748 offset += sec_length;
10752 putpkt (target_buf);
10753 getpkt (&target_buf, &target_buf_size, 0);
10758 remote_trace_start (struct target_ops *self)
10760 putpkt ("QTStart");
10761 remote_get_noisy_reply (&target_buf, &target_buf_size);
10762 if (*target_buf == '\0')
10763 error (_("Target does not support this command."));
10764 if (strcmp (target_buf, "OK") != 0)
10765 error (_("Bogus reply from target: %s"), target_buf);
10769 remote_get_trace_status (struct target_ops *self, struct trace_status *ts)
10771 /* Initialize it just to avoid a GCC false warning. */
10773 /* FIXME we need to get register block size some other way. */
10774 extern int trace_regblock_size;
10775 volatile struct gdb_exception ex;
10776 enum packet_result result;
10778 if (packet_support (PACKET_qTStatus) == PACKET_DISABLE)
10781 trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet;
10783 putpkt ("qTStatus");
10785 TRY_CATCH (ex, RETURN_MASK_ERROR)
10787 p = remote_get_noisy_reply (&target_buf, &target_buf_size);
10791 if (ex.error != TARGET_CLOSE_ERROR)
10793 exception_fprintf (gdb_stderr, ex, "qTStatus: ");
10796 throw_exception (ex);
10799 result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]);
10801 /* If the remote target doesn't do tracing, flag it. */
10802 if (result == PACKET_UNKNOWN)
10805 /* We're working with a live target. */
10806 ts->filename = NULL;
10809 error (_("Bogus trace status reply from target: %s"), target_buf);
10811 /* Function 'parse_trace_status' sets default value of each field of
10812 'ts' at first, so we don't have to do it here. */
10813 parse_trace_status (p, ts);
10815 return ts->running;
10819 remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp,
10820 struct uploaded_tp *utp)
10822 struct remote_state *rs = get_remote_state ();
10824 struct bp_location *loc;
10825 struct tracepoint *tp = (struct tracepoint *) bp;
10826 size_t size = get_remote_packet_size ();
10830 tp->base.hit_count = 0;
10831 tp->traceframe_usage = 0;
10832 for (loc = tp->base.loc; loc; loc = loc->next)
10834 /* If the tracepoint was never downloaded, don't go asking for
10836 if (tp->number_on_target == 0)
10838 xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target,
10839 phex_nz (loc->address, 0));
10841 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
10842 if (reply && *reply)
10845 parse_tracepoint_status (reply + 1, bp, utp);
10851 utp->hit_count = 0;
10852 utp->traceframe_usage = 0;
10853 xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number,
10854 phex_nz (utp->addr, 0));
10856 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
10857 if (reply && *reply)
10860 parse_tracepoint_status (reply + 1, bp, utp);
10866 remote_trace_stop (struct target_ops *self)
10869 remote_get_noisy_reply (&target_buf, &target_buf_size);
10870 if (*target_buf == '\0')
10871 error (_("Target does not support this command."));
10872 if (strcmp (target_buf, "OK") != 0)
10873 error (_("Bogus reply from target: %s"), target_buf);
10877 remote_trace_find (struct target_ops *self,
10878 enum trace_find_type type, int num,
10879 CORE_ADDR addr1, CORE_ADDR addr2,
10882 struct remote_state *rs = get_remote_state ();
10883 char *endbuf = rs->buf + get_remote_packet_size ();
10885 int target_frameno = -1, target_tracept = -1;
10887 /* Lookups other than by absolute frame number depend on the current
10888 trace selected, so make sure it is correct on the remote end
10890 if (type != tfind_number)
10891 set_remote_traceframe ();
10894 strcpy (p, "QTFrame:");
10895 p = strchr (p, '\0');
10899 xsnprintf (p, endbuf - p, "%x", num);
10902 xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0));
10905 xsnprintf (p, endbuf - p, "tdp:%x", num);
10908 xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0),
10909 phex_nz (addr2, 0));
10911 case tfind_outside:
10912 xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0),
10913 phex_nz (addr2, 0));
10916 error (_("Unknown trace find type %d"), type);
10920 reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size);
10921 if (*reply == '\0')
10922 error (_("Target does not support this command."));
10924 while (reply && *reply)
10929 target_frameno = (int) strtol (p, &reply, 16);
10931 error (_("Unable to parse trace frame number"));
10932 /* Don't update our remote traceframe number cache on failure
10933 to select a remote traceframe. */
10934 if (target_frameno == -1)
10939 target_tracept = (int) strtol (p, &reply, 16);
10941 error (_("Unable to parse tracepoint number"));
10943 case 'O': /* "OK"? */
10944 if (reply[1] == 'K' && reply[2] == '\0')
10947 error (_("Bogus reply from target: %s"), reply);
10950 error (_("Bogus reply from target: %s"), reply);
10953 *tpp = target_tracept;
10955 rs->remote_traceframe_number = target_frameno;
10956 return target_frameno;
10960 remote_get_trace_state_variable_value (struct target_ops *self,
10961 int tsvnum, LONGEST *val)
10963 struct remote_state *rs = get_remote_state ();
10967 set_remote_traceframe ();
10969 xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum);
10971 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
10972 if (reply && *reply)
10976 unpack_varlen_hex (reply + 1, &uval);
10977 *val = (LONGEST) uval;
10985 remote_save_trace_data (struct target_ops *self, const char *filename)
10987 struct remote_state *rs = get_remote_state ();
10991 strcpy (p, "QTSave:");
10993 if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ())
10994 error (_("Remote file name too long for trace save packet"));
10995 p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename));
10998 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
10999 if (*reply == '\0')
11000 error (_("Target does not support this command."));
11001 if (strcmp (reply, "OK") != 0)
11002 error (_("Bogus reply from target: %s"), reply);
11006 /* This is basically a memory transfer, but needs to be its own packet
11007 because we don't know how the target actually organizes its trace
11008 memory, plus we want to be able to ask for as much as possible, but
11009 not be unhappy if we don't get as much as we ask for. */
11012 remote_get_raw_trace_data (struct target_ops *self,
11013 gdb_byte *buf, ULONGEST offset, LONGEST len)
11015 struct remote_state *rs = get_remote_state ();
11021 strcpy (p, "qTBuffer:");
11023 p += hexnumstr (p, offset);
11025 p += hexnumstr (p, len);
11029 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11030 if (reply && *reply)
11032 /* 'l' by itself means we're at the end of the buffer and
11033 there is nothing more to get. */
11037 /* Convert the reply into binary. Limit the number of bytes to
11038 convert according to our passed-in buffer size, rather than
11039 what was returned in the packet; if the target is
11040 unexpectedly generous and gives us a bigger reply than we
11041 asked for, we don't want to crash. */
11042 rslt = hex2bin (target_buf, buf, len);
11046 /* Something went wrong, flag as an error. */
11051 remote_set_disconnected_tracing (struct target_ops *self, int val)
11053 struct remote_state *rs = get_remote_state ();
11055 if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE)
11059 xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val);
11061 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11062 if (*reply == '\0')
11063 error (_("Target does not support this command."));
11064 if (strcmp (reply, "OK") != 0)
11065 error (_("Bogus reply from target: %s"), reply);
11068 warning (_("Target does not support disconnected tracing."));
11072 remote_core_of_thread (struct target_ops *ops, ptid_t ptid)
11074 struct thread_info *info = find_thread_ptid (ptid);
11076 if (info && info->private)
11077 return info->private->core;
11082 remote_set_circular_trace_buffer (struct target_ops *self, int val)
11084 struct remote_state *rs = get_remote_state ();
11087 xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val);
11089 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11090 if (*reply == '\0')
11091 error (_("Target does not support this command."));
11092 if (strcmp (reply, "OK") != 0)
11093 error (_("Bogus reply from target: %s"), reply);
11096 static struct traceframe_info *
11097 remote_traceframe_info (struct target_ops *self)
11101 text = target_read_stralloc (¤t_target,
11102 TARGET_OBJECT_TRACEFRAME_INFO, NULL);
11105 struct traceframe_info *info;
11106 struct cleanup *back_to = make_cleanup (xfree, text);
11108 info = parse_traceframe_info (text);
11109 do_cleanups (back_to);
11116 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11117 instruction on which a fast tracepoint may be placed. Returns -1
11118 if the packet is not supported, and 0 if the minimum instruction
11119 length is unknown. */
11122 remote_get_min_fast_tracepoint_insn_len (struct target_ops *self)
11124 struct remote_state *rs = get_remote_state ();
11127 /* If we're not debugging a process yet, the IPA can't be
11129 if (!target_has_execution)
11132 /* Make sure the remote is pointing at the right process. */
11133 set_general_process ();
11135 xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen");
11137 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11138 if (*reply == '\0')
11142 ULONGEST min_insn_len;
11144 unpack_varlen_hex (reply, &min_insn_len);
11146 return (int) min_insn_len;
11151 remote_set_trace_buffer_size (struct target_ops *self, LONGEST val)
11153 if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE)
11155 struct remote_state *rs = get_remote_state ();
11156 char *buf = rs->buf;
11157 char *endbuf = rs->buf + get_remote_packet_size ();
11158 enum packet_result result;
11160 gdb_assert (val >= 0 || val == -1);
11161 buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:");
11162 /* Send -1 as literal "-1" to avoid host size dependency. */
11166 buf += hexnumstr (buf, (ULONGEST) -val);
11169 buf += hexnumstr (buf, (ULONGEST) val);
11172 remote_get_noisy_reply (&rs->buf, &rs->buf_size);
11173 result = packet_ok (rs->buf,
11174 &remote_protocol_packets[PACKET_QTBuffer_size]);
11176 if (result != PACKET_OK)
11177 warning (_("Bogus reply from target: %s"), rs->buf);
11182 remote_set_trace_notes (struct target_ops *self,
11183 const char *user, const char *notes,
11184 const char *stop_notes)
11186 struct remote_state *rs = get_remote_state ();
11188 char *buf = rs->buf;
11189 char *endbuf = rs->buf + get_remote_packet_size ();
11192 buf += xsnprintf (buf, endbuf - buf, "QTNotes:");
11195 buf += xsnprintf (buf, endbuf - buf, "user:");
11196 nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user));
11202 buf += xsnprintf (buf, endbuf - buf, "notes:");
11203 nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes));
11209 buf += xsnprintf (buf, endbuf - buf, "tstop:");
11210 nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes));
11214 /* Ensure the buffer is terminated. */
11218 reply = remote_get_noisy_reply (&target_buf, &target_buf_size);
11219 if (*reply == '\0')
11222 if (strcmp (reply, "OK") != 0)
11223 error (_("Bogus reply from target: %s"), reply);
11229 remote_use_agent (struct target_ops *self, int use)
11231 if (packet_support (PACKET_QAgent) != PACKET_DISABLE)
11233 struct remote_state *rs = get_remote_state ();
11235 /* If the stub supports QAgent. */
11236 xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use);
11238 getpkt (&rs->buf, &rs->buf_size, 0);
11240 if (strcmp (rs->buf, "OK") == 0)
11251 remote_can_use_agent (struct target_ops *self)
11253 return (packet_support (PACKET_QAgent) != PACKET_DISABLE);
11256 struct btrace_target_info
11258 /* The ptid of the traced thread. */
11262 /* Check whether the target supports branch tracing. */
11265 remote_supports_btrace (struct target_ops *self)
11267 if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE)
11269 if (packet_support (PACKET_Qbtrace_bts) != PACKET_ENABLE)
11271 if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE)
11277 /* Enable branch tracing. */
11279 static struct btrace_target_info *
11280 remote_enable_btrace (struct target_ops *self, ptid_t ptid)
11282 struct btrace_target_info *tinfo = NULL;
11283 struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts];
11284 struct remote_state *rs = get_remote_state ();
11285 char *buf = rs->buf;
11286 char *endbuf = rs->buf + get_remote_packet_size ();
11288 if (packet_config_support (packet) != PACKET_ENABLE)
11289 error (_("Target does not support branch tracing."));
11291 set_general_thread (ptid);
11293 buf += xsnprintf (buf, endbuf - buf, "%s", packet->name);
11295 getpkt (&rs->buf, &rs->buf_size, 0);
11297 if (packet_ok (rs->buf, packet) == PACKET_ERROR)
11299 if (rs->buf[0] == 'E' && rs->buf[1] == '.')
11300 error (_("Could not enable branch tracing for %s: %s"),
11301 target_pid_to_str (ptid), rs->buf + 2);
11303 error (_("Could not enable branch tracing for %s."),
11304 target_pid_to_str (ptid));
11307 tinfo = xzalloc (sizeof (*tinfo));
11308 tinfo->ptid = ptid;
11313 /* Disable branch tracing. */
11316 remote_disable_btrace (struct target_ops *self,
11317 struct btrace_target_info *tinfo)
11319 struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off];
11320 struct remote_state *rs = get_remote_state ();
11321 char *buf = rs->buf;
11322 char *endbuf = rs->buf + get_remote_packet_size ();
11324 if (packet_config_support (packet) != PACKET_ENABLE)
11325 error (_("Target does not support branch tracing."));
11327 set_general_thread (tinfo->ptid);
11329 buf += xsnprintf (buf, endbuf - buf, "%s", packet->name);
11331 getpkt (&rs->buf, &rs->buf_size, 0);
11333 if (packet_ok (rs->buf, packet) == PACKET_ERROR)
11335 if (rs->buf[0] == 'E' && rs->buf[1] == '.')
11336 error (_("Could not disable branch tracing for %s: %s"),
11337 target_pid_to_str (tinfo->ptid), rs->buf + 2);
11339 error (_("Could not disable branch tracing for %s."),
11340 target_pid_to_str (tinfo->ptid));
11346 /* Teardown branch tracing. */
11349 remote_teardown_btrace (struct target_ops *self,
11350 struct btrace_target_info *tinfo)
11352 /* We must not talk to the target during teardown. */
11356 /* Read the branch trace. */
11358 static enum btrace_error
11359 remote_read_btrace (struct target_ops *self,
11360 VEC (btrace_block_s) **btrace,
11361 struct btrace_target_info *tinfo,
11362 enum btrace_read_type type)
11364 struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace];
11365 struct remote_state *rs = get_remote_state ();
11366 struct cleanup *cleanup;
11370 if (packet_config_support (packet) != PACKET_ENABLE)
11371 error (_("Target does not support branch tracing."));
11373 #if !defined(HAVE_LIBEXPAT)
11374 error (_("Cannot process branch tracing result. XML parsing not supported."));
11379 case BTRACE_READ_ALL:
11382 case BTRACE_READ_NEW:
11385 case BTRACE_READ_DELTA:
11389 internal_error (__FILE__, __LINE__,
11390 _("Bad branch tracing read type: %u."),
11391 (unsigned int) type);
11394 xml = target_read_stralloc (¤t_target,
11395 TARGET_OBJECT_BTRACE, annex);
11397 return BTRACE_ERR_UNKNOWN;
11399 cleanup = make_cleanup (xfree, xml);
11400 *btrace = parse_xml_btrace (xml);
11401 do_cleanups (cleanup);
11403 return BTRACE_ERR_NONE;
11407 remote_augmented_libraries_svr4_read (struct target_ops *self)
11409 return (packet_support (PACKET_augmented_libraries_svr4_read_feature)
11413 /* Implementation of to_load. */
11416 remote_load (struct target_ops *self, const char *name, int from_tty)
11418 generic_load (name, from_tty);
11422 init_remote_ops (void)
11424 remote_ops.to_shortname = "remote";
11425 remote_ops.to_longname = "Remote serial target in gdb-specific protocol";
11426 remote_ops.to_doc =
11427 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11428 Specify the serial device it is connected to\n\
11429 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11430 remote_ops.to_open = remote_open;
11431 remote_ops.to_close = remote_close;
11432 remote_ops.to_detach = remote_detach;
11433 remote_ops.to_disconnect = remote_disconnect;
11434 remote_ops.to_resume = remote_resume;
11435 remote_ops.to_wait = remote_wait;
11436 remote_ops.to_fetch_registers = remote_fetch_registers;
11437 remote_ops.to_store_registers = remote_store_registers;
11438 remote_ops.to_prepare_to_store = remote_prepare_to_store;
11439 remote_ops.to_files_info = remote_files_info;
11440 remote_ops.to_insert_breakpoint = remote_insert_breakpoint;
11441 remote_ops.to_remove_breakpoint = remote_remove_breakpoint;
11442 remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint;
11443 remote_ops.to_stopped_data_address = remote_stopped_data_address;
11444 remote_ops.to_watchpoint_addr_within_range =
11445 remote_watchpoint_addr_within_range;
11446 remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
11447 remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
11448 remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
11449 remote_ops.to_region_ok_for_hw_watchpoint
11450 = remote_region_ok_for_hw_watchpoint;
11451 remote_ops.to_insert_watchpoint = remote_insert_watchpoint;
11452 remote_ops.to_remove_watchpoint = remote_remove_watchpoint;
11453 remote_ops.to_kill = remote_kill;
11454 remote_ops.to_load = remote_load;
11455 remote_ops.to_mourn_inferior = remote_mourn;
11456 remote_ops.to_pass_signals = remote_pass_signals;
11457 remote_ops.to_program_signals = remote_program_signals;
11458 remote_ops.to_thread_alive = remote_thread_alive;
11459 remote_ops.to_find_new_threads = remote_threads_info;
11460 remote_ops.to_pid_to_str = remote_pid_to_str;
11461 remote_ops.to_extra_thread_info = remote_threads_extra_info;
11462 remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid;
11463 remote_ops.to_stop = remote_stop;
11464 remote_ops.to_xfer_partial = remote_xfer_partial;
11465 remote_ops.to_rcmd = remote_rcmd;
11466 remote_ops.to_log_command = serial_log_command;
11467 remote_ops.to_get_thread_local_address = remote_get_thread_local_address;
11468 remote_ops.to_stratum = process_stratum;
11469 remote_ops.to_has_all_memory = default_child_has_all_memory;
11470 remote_ops.to_has_memory = default_child_has_memory;
11471 remote_ops.to_has_stack = default_child_has_stack;
11472 remote_ops.to_has_registers = default_child_has_registers;
11473 remote_ops.to_has_execution = default_child_has_execution;
11474 remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
11475 remote_ops.to_can_execute_reverse = remote_can_execute_reverse;
11476 remote_ops.to_magic = OPS_MAGIC;
11477 remote_ops.to_memory_map = remote_memory_map;
11478 remote_ops.to_flash_erase = remote_flash_erase;
11479 remote_ops.to_flash_done = remote_flash_done;
11480 remote_ops.to_read_description = remote_read_description;
11481 remote_ops.to_search_memory = remote_search_memory;
11482 remote_ops.to_can_async_p = remote_can_async_p;
11483 remote_ops.to_is_async_p = remote_is_async_p;
11484 remote_ops.to_async = remote_async;
11485 remote_ops.to_terminal_inferior = remote_terminal_inferior;
11486 remote_ops.to_terminal_ours = remote_terminal_ours;
11487 remote_ops.to_supports_non_stop = remote_supports_non_stop;
11488 remote_ops.to_supports_multi_process = remote_supports_multi_process;
11489 remote_ops.to_supports_disable_randomization
11490 = remote_supports_disable_randomization;
11491 remote_ops.to_fileio_open = remote_hostio_open;
11492 remote_ops.to_fileio_pwrite = remote_hostio_pwrite;
11493 remote_ops.to_fileio_pread = remote_hostio_pread;
11494 remote_ops.to_fileio_close = remote_hostio_close;
11495 remote_ops.to_fileio_unlink = remote_hostio_unlink;
11496 remote_ops.to_fileio_readlink = remote_hostio_readlink;
11497 remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint;
11498 remote_ops.to_supports_string_tracing = remote_supports_string_tracing;
11499 remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints;
11500 remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands;
11501 remote_ops.to_trace_init = remote_trace_init;
11502 remote_ops.to_download_tracepoint = remote_download_tracepoint;
11503 remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint;
11504 remote_ops.to_download_trace_state_variable
11505 = remote_download_trace_state_variable;
11506 remote_ops.to_enable_tracepoint = remote_enable_tracepoint;
11507 remote_ops.to_disable_tracepoint = remote_disable_tracepoint;
11508 remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions;
11509 remote_ops.to_trace_start = remote_trace_start;
11510 remote_ops.to_get_trace_status = remote_get_trace_status;
11511 remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status;
11512 remote_ops.to_trace_stop = remote_trace_stop;
11513 remote_ops.to_trace_find = remote_trace_find;
11514 remote_ops.to_get_trace_state_variable_value
11515 = remote_get_trace_state_variable_value;
11516 remote_ops.to_save_trace_data = remote_save_trace_data;
11517 remote_ops.to_upload_tracepoints = remote_upload_tracepoints;
11518 remote_ops.to_upload_trace_state_variables
11519 = remote_upload_trace_state_variables;
11520 remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data;
11521 remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len;
11522 remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing;
11523 remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer;
11524 remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size;
11525 remote_ops.to_set_trace_notes = remote_set_trace_notes;
11526 remote_ops.to_core_of_thread = remote_core_of_thread;
11527 remote_ops.to_verify_memory = remote_verify_memory;
11528 remote_ops.to_get_tib_address = remote_get_tib_address;
11529 remote_ops.to_set_permissions = remote_set_permissions;
11530 remote_ops.to_static_tracepoint_marker_at
11531 = remote_static_tracepoint_marker_at;
11532 remote_ops.to_static_tracepoint_markers_by_strid
11533 = remote_static_tracepoint_markers_by_strid;
11534 remote_ops.to_traceframe_info = remote_traceframe_info;
11535 remote_ops.to_use_agent = remote_use_agent;
11536 remote_ops.to_can_use_agent = remote_can_use_agent;
11537 remote_ops.to_supports_btrace = remote_supports_btrace;
11538 remote_ops.to_enable_btrace = remote_enable_btrace;
11539 remote_ops.to_disable_btrace = remote_disable_btrace;
11540 remote_ops.to_teardown_btrace = remote_teardown_btrace;
11541 remote_ops.to_read_btrace = remote_read_btrace;
11542 remote_ops.to_augmented_libraries_svr4_read =
11543 remote_augmented_libraries_svr4_read;
11546 /* Set up the extended remote vector by making a copy of the standard
11547 remote vector and adding to it. */
11550 init_extended_remote_ops (void)
11552 extended_remote_ops = remote_ops;
11554 extended_remote_ops.to_shortname = "extended-remote";
11555 extended_remote_ops.to_longname =
11556 "Extended remote serial target in gdb-specific protocol";
11557 extended_remote_ops.to_doc =
11558 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11559 Specify the serial device it is connected to (e.g. /dev/ttya).";
11560 extended_remote_ops.to_open = extended_remote_open;
11561 extended_remote_ops.to_create_inferior = extended_remote_create_inferior;
11562 extended_remote_ops.to_mourn_inferior = extended_remote_mourn;
11563 extended_remote_ops.to_detach = extended_remote_detach;
11564 extended_remote_ops.to_attach = extended_remote_attach;
11565 extended_remote_ops.to_post_attach = extended_remote_post_attach;
11566 extended_remote_ops.to_kill = extended_remote_kill;
11567 extended_remote_ops.to_supports_disable_randomization
11568 = extended_remote_supports_disable_randomization;
11572 remote_can_async_p (struct target_ops *ops)
11574 struct remote_state *rs = get_remote_state ();
11576 if (!target_async_permitted)
11577 /* We only enable async when the user specifically asks for it. */
11580 /* We're async whenever the serial device is. */
11581 return serial_can_async_p (rs->remote_desc);
11585 remote_is_async_p (struct target_ops *ops)
11587 struct remote_state *rs = get_remote_state ();
11589 if (!target_async_permitted)
11590 /* We only enable async when the user specifically asks for it. */
11593 /* We're async whenever the serial device is. */
11594 return serial_is_async_p (rs->remote_desc);
11597 /* Pass the SERIAL event on and up to the client. One day this code
11598 will be able to delay notifying the client of an event until the
11599 point where an entire packet has been received. */
11601 static serial_event_ftype remote_async_serial_handler;
11604 remote_async_serial_handler (struct serial *scb, void *context)
11606 struct remote_state *rs = context;
11608 /* Don't propogate error information up to the client. Instead let
11609 the client find out about the error by querying the target. */
11610 rs->async_client_callback (INF_REG_EVENT, rs->async_client_context);
11614 remote_async_inferior_event_handler (gdb_client_data data)
11616 inferior_event_handler (INF_REG_EVENT, NULL);
11620 remote_async (struct target_ops *ops,
11621 void (*callback) (enum inferior_event_type event_type,
11625 struct remote_state *rs = get_remote_state ();
11627 if (callback != NULL)
11629 serial_async (rs->remote_desc, remote_async_serial_handler, rs);
11630 rs->async_client_callback = callback;
11631 rs->async_client_context = context;
11634 serial_async (rs->remote_desc, NULL, NULL);
11638 set_remote_cmd (char *args, int from_tty)
11640 help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout);
11644 show_remote_cmd (char *args, int from_tty)
11646 /* We can't just use cmd_show_list here, because we want to skip
11647 the redundant "show remote Z-packet" and the legacy aliases. */
11648 struct cleanup *showlist_chain;
11649 struct cmd_list_element *list = remote_show_cmdlist;
11650 struct ui_out *uiout = current_uiout;
11652 showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist");
11653 for (; list != NULL; list = list->next)
11654 if (strcmp (list->name, "Z-packet") == 0)
11656 else if (list->type == not_set_cmd)
11657 /* Alias commands are exactly like the original, except they
11658 don't have the normal type. */
11662 struct cleanup *option_chain
11663 = make_cleanup_ui_out_tuple_begin_end (uiout, "option");
11665 ui_out_field_string (uiout, "name", list->name);
11666 ui_out_text (uiout, ": ");
11667 if (list->type == show_cmd)
11668 do_show_command ((char *) NULL, from_tty, list);
11670 cmd_func (list, NULL, from_tty);
11671 /* Close the tuple. */
11672 do_cleanups (option_chain);
11675 /* Close the tuple. */
11676 do_cleanups (showlist_chain);
11680 /* Function to be called whenever a new objfile (shlib) is detected. */
11682 remote_new_objfile (struct objfile *objfile)
11684 struct remote_state *rs = get_remote_state ();
11686 if (rs->remote_desc != 0) /* Have a remote connection. */
11687 remote_check_symbols ();
11690 /* Pull all the tracepoints defined on the target and create local
11691 data structures representing them. We don't want to create real
11692 tracepoints yet, we don't want to mess up the user's existing
11696 remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp)
11698 struct remote_state *rs = get_remote_state ();
11701 /* Ask for a first packet of tracepoint definition. */
11703 getpkt (&rs->buf, &rs->buf_size, 0);
11705 while (*p && *p != 'l')
11707 parse_tracepoint_definition (p, utpp);
11708 /* Ask for another packet of tracepoint definition. */
11710 getpkt (&rs->buf, &rs->buf_size, 0);
11717 remote_upload_trace_state_variables (struct target_ops *self,
11718 struct uploaded_tsv **utsvp)
11720 struct remote_state *rs = get_remote_state ();
11723 /* Ask for a first packet of variable definition. */
11725 getpkt (&rs->buf, &rs->buf_size, 0);
11727 while (*p && *p != 'l')
11729 parse_tsv_definition (p, utsvp);
11730 /* Ask for another packet of variable definition. */
11732 getpkt (&rs->buf, &rs->buf_size, 0);
11738 /* The "set/show range-stepping" show hook. */
11741 show_range_stepping (struct ui_file *file, int from_tty,
11742 struct cmd_list_element *c,
11745 fprintf_filtered (file,
11746 _("Debugger's willingness to use range stepping "
11747 "is %s.\n"), value);
11750 /* The "set/show range-stepping" set hook. */
11753 set_range_stepping (char *ignore_args, int from_tty,
11754 struct cmd_list_element *c)
11756 struct remote_state *rs = get_remote_state ();
11758 /* Whene enabling, check whether range stepping is actually
11759 supported by the target, and warn if not. */
11760 if (use_range_stepping)
11762 if (rs->remote_desc != NULL)
11764 if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN)
11765 remote_vcont_probe (rs);
11767 if (packet_support (PACKET_vCont) == PACKET_ENABLE
11768 && rs->supports_vCont.r)
11772 warning (_("Range stepping is not supported by the current target"));
11777 _initialize_remote (void)
11779 struct remote_state *rs;
11780 struct cmd_list_element *cmd;
11781 const char *cmd_name;
11783 /* architecture specific data */
11784 remote_gdbarch_data_handle =
11785 gdbarch_data_register_post_init (init_remote_state);
11786 remote_g_packet_data_handle =
11787 gdbarch_data_register_pre_init (remote_g_packet_data_init);
11789 /* Initialize the per-target state. At the moment there is only one
11790 of these, not one per target. Only one target is active at a
11792 remote_state = new_remote_state ();
11794 init_remote_ops ();
11795 add_target (&remote_ops);
11797 init_extended_remote_ops ();
11798 add_target (&extended_remote_ops);
11800 /* Hook into new objfile notification. */
11801 observer_attach_new_objfile (remote_new_objfile);
11802 /* We're no longer interested in notification events of an inferior
11804 observer_attach_inferior_exit (discard_pending_stop_replies);
11806 /* Set up signal handlers. */
11807 async_sigint_remote_token =
11808 create_async_signal_handler (async_remote_interrupt, NULL);
11809 async_sigint_remote_twice_token =
11810 create_async_signal_handler (async_remote_interrupt_twice, NULL);
11813 init_remote_threadtests ();
11816 stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree);
11817 /* set/show remote ... */
11819 add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\
11820 Remote protocol specific variables\n\
11821 Configure various remote-protocol specific variables such as\n\
11822 the packets being used"),
11823 &remote_set_cmdlist, "set remote ",
11824 0 /* allow-unknown */, &setlist);
11825 add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\
11826 Remote protocol specific variables\n\
11827 Configure various remote-protocol specific variables such as\n\
11828 the packets being used"),
11829 &remote_show_cmdlist, "show remote ",
11830 0 /* allow-unknown */, &showlist);
11832 add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\
11833 Compare section data on target to the exec file.\n\
11834 Argument is a single section name (default: all loaded sections).\n\
11835 To compare only read-only loaded sections, specify the -r option."),
11838 add_cmd ("packet", class_maintenance, packet_command, _("\
11839 Send an arbitrary packet to a remote target.\n\
11840 maintenance packet TEXT\n\
11841 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11842 this command sends the string TEXT to the inferior, and displays the\n\
11843 response packet. GDB supplies the initial `$' character, and the\n\
11844 terminating `#' character and checksum."),
11847 add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\
11848 Set whether to send break if interrupted."), _("\
11849 Show whether to send break if interrupted."), _("\
11850 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11851 set_remotebreak, show_remotebreak,
11852 &setlist, &showlist);
11853 cmd_name = "remotebreak";
11854 cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1);
11855 deprecate_cmd (cmd, "set remote interrupt-sequence");
11856 cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */
11857 cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1);
11858 deprecate_cmd (cmd, "show remote interrupt-sequence");
11860 add_setshow_enum_cmd ("interrupt-sequence", class_support,
11861 interrupt_sequence_modes, &interrupt_sequence_mode,
11863 Set interrupt sequence to remote target."), _("\
11864 Show interrupt sequence to remote target."), _("\
11865 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11866 NULL, show_interrupt_sequence,
11867 &remote_set_cmdlist,
11868 &remote_show_cmdlist);
11870 add_setshow_boolean_cmd ("interrupt-on-connect", class_support,
11871 &interrupt_on_connect, _("\
11872 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11873 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11874 If set, interrupt sequence is sent to remote target."),
11876 &remote_set_cmdlist, &remote_show_cmdlist);
11878 /* Install commands for configuring memory read/write packets. */
11880 add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\
11881 Set the maximum number of bytes per memory write packet (deprecated)."),
11883 add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\
11884 Show the maximum number of bytes per memory write packet (deprecated)."),
11886 add_cmd ("memory-write-packet-size", no_class,
11887 set_memory_write_packet_size, _("\
11888 Set the maximum number of bytes per memory-write packet.\n\
11889 Specify the number of bytes in a packet or 0 (zero) for the\n\
11890 default packet size. The actual limit is further reduced\n\
11891 dependent on the target. Specify ``fixed'' to disable the\n\
11892 further restriction and ``limit'' to enable that restriction."),
11893 &remote_set_cmdlist);
11894 add_cmd ("memory-read-packet-size", no_class,
11895 set_memory_read_packet_size, _("\
11896 Set the maximum number of bytes per memory-read packet.\n\
11897 Specify the number of bytes in a packet or 0 (zero) for the\n\
11898 default packet size. The actual limit is further reduced\n\
11899 dependent on the target. Specify ``fixed'' to disable the\n\
11900 further restriction and ``limit'' to enable that restriction."),
11901 &remote_set_cmdlist);
11902 add_cmd ("memory-write-packet-size", no_class,
11903 show_memory_write_packet_size,
11904 _("Show the maximum number of bytes per memory-write packet."),
11905 &remote_show_cmdlist);
11906 add_cmd ("memory-read-packet-size", no_class,
11907 show_memory_read_packet_size,
11908 _("Show the maximum number of bytes per memory-read packet."),
11909 &remote_show_cmdlist);
11911 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class,
11912 &remote_hw_watchpoint_limit, _("\
11913 Set the maximum number of target hardware watchpoints."), _("\
11914 Show the maximum number of target hardware watchpoints."), _("\
11915 Specify a negative limit for unlimited."),
11916 NULL, NULL, /* FIXME: i18n: The maximum
11917 number of target hardware
11918 watchpoints is %s. */
11919 &remote_set_cmdlist, &remote_show_cmdlist);
11920 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class,
11921 &remote_hw_watchpoint_length_limit, _("\
11922 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11923 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11924 Specify a negative limit for unlimited."),
11925 NULL, NULL, /* FIXME: i18n: The maximum
11926 length (in bytes) of a target
11927 hardware watchpoint is %s. */
11928 &remote_set_cmdlist, &remote_show_cmdlist);
11929 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class,
11930 &remote_hw_breakpoint_limit, _("\
11931 Set the maximum number of target hardware breakpoints."), _("\
11932 Show the maximum number of target hardware breakpoints."), _("\
11933 Specify a negative limit for unlimited."),
11934 NULL, NULL, /* FIXME: i18n: The maximum
11935 number of target hardware
11936 breakpoints is %s. */
11937 &remote_set_cmdlist, &remote_show_cmdlist);
11939 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure,
11940 &remote_address_size, _("\
11941 Set the maximum size of the address (in bits) in a memory packet."), _("\
11942 Show the maximum size of the address (in bits) in a memory packet."), NULL,
11944 NULL, /* FIXME: i18n: */
11945 &setlist, &showlist);
11947 init_all_packet_configs ();
11949 add_packet_config_cmd (&remote_protocol_packets[PACKET_X],
11950 "X", "binary-download", 1);
11952 add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont],
11953 "vCont", "verbose-resume", 0);
11955 add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals],
11956 "QPassSignals", "pass-signals", 0);
11958 add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals],
11959 "QProgramSignals", "program-signals", 0);
11961 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol],
11962 "qSymbol", "symbol-lookup", 0);
11964 add_packet_config_cmd (&remote_protocol_packets[PACKET_P],
11965 "P", "set-register", 1);
11967 add_packet_config_cmd (&remote_protocol_packets[PACKET_p],
11968 "p", "fetch-register", 1);
11970 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0],
11971 "Z0", "software-breakpoint", 0);
11973 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1],
11974 "Z1", "hardware-breakpoint", 0);
11976 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2],
11977 "Z2", "write-watchpoint", 0);
11979 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3],
11980 "Z3", "read-watchpoint", 0);
11982 add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4],
11983 "Z4", "access-watchpoint", 0);
11985 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv],
11986 "qXfer:auxv:read", "read-aux-vector", 0);
11988 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features],
11989 "qXfer:features:read", "target-features", 0);
11991 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries],
11992 "qXfer:libraries:read", "library-info", 0);
11994 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4],
11995 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11997 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map],
11998 "qXfer:memory-map:read", "memory-map", 0);
12000 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read],
12001 "qXfer:spu:read", "read-spu-object", 0);
12003 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write],
12004 "qXfer:spu:write", "write-spu-object", 0);
12006 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata],
12007 "qXfer:osdata:read", "osdata", 0);
12009 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads],
12010 "qXfer:threads:read", "threads", 0);
12012 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read],
12013 "qXfer:siginfo:read", "read-siginfo-object", 0);
12015 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write],
12016 "qXfer:siginfo:write", "write-siginfo-object", 0);
12018 add_packet_config_cmd
12019 (&remote_protocol_packets[PACKET_qXfer_traceframe_info],
12020 "qXfer:traceframe-info:read", "traceframe-info", 0);
12022 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib],
12023 "qXfer:uib:read", "unwind-info-block", 0);
12025 add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr],
12026 "qGetTLSAddr", "get-thread-local-storage-address",
12029 add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr],
12030 "qGetTIBAddr", "get-thread-information-block-address",
12033 add_packet_config_cmd (&remote_protocol_packets[PACKET_bc],
12034 "bc", "reverse-continue", 0);
12036 add_packet_config_cmd (&remote_protocol_packets[PACKET_bs],
12037 "bs", "reverse-step", 0);
12039 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported],
12040 "qSupported", "supported-packets", 0);
12042 add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory],
12043 "qSearch:memory", "search-memory", 0);
12045 add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus],
12046 "qTStatus", "trace-status", 0);
12048 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open],
12049 "vFile:open", "hostio-open", 0);
12051 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread],
12052 "vFile:pread", "hostio-pread", 0);
12054 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite],
12055 "vFile:pwrite", "hostio-pwrite", 0);
12057 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close],
12058 "vFile:close", "hostio-close", 0);
12060 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink],
12061 "vFile:unlink", "hostio-unlink", 0);
12063 add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink],
12064 "vFile:readlink", "hostio-readlink", 0);
12066 add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach],
12067 "vAttach", "attach", 0);
12069 add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun],
12072 add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode],
12073 "QStartNoAckMode", "noack", 0);
12075 add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill],
12076 "vKill", "kill", 0);
12078 add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached],
12079 "qAttached", "query-attached", 0);
12081 add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints],
12082 "ConditionalTracepoints",
12083 "conditional-tracepoints", 0);
12085 add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints],
12086 "ConditionalBreakpoints",
12087 "conditional-breakpoints", 0);
12089 add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands],
12090 "BreakpointCommands",
12091 "breakpoint-commands", 0);
12093 add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints],
12094 "FastTracepoints", "fast-tracepoints", 0);
12096 add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource],
12097 "TracepointSource", "TracepointSource", 0);
12099 add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow],
12100 "QAllow", "allow", 0);
12102 add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints],
12103 "StaticTracepoints", "static-tracepoints", 0);
12105 add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace],
12106 "InstallInTrace", "install-in-trace", 0);
12108 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read],
12109 "qXfer:statictrace:read", "read-sdata-object", 0);
12111 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic],
12112 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12114 add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization],
12115 "QDisableRandomization", "disable-randomization", 0);
12117 add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent],
12118 "QAgent", "agent", 0);
12120 add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size],
12121 "QTBuffer:size", "trace-buffer-size", 0);
12123 add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off],
12124 "Qbtrace:off", "disable-btrace", 0);
12126 add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts],
12127 "Qbtrace:bts", "enable-btrace", 0);
12129 add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace],
12130 "qXfer:btrace", "read-btrace", 0);
12132 /* Assert that we've registered commands for all packet configs. */
12136 for (i = 0; i < PACKET_MAX; i++)
12138 /* Ideally all configs would have a command associated. Some
12139 still don't though. */
12144 case PACKET_QNonStop:
12145 case PACKET_multiprocess_feature:
12146 case PACKET_EnableDisableTracepoints_feature:
12147 case PACKET_tracenz_feature:
12148 case PACKET_DisconnectedTracing_feature:
12149 case PACKET_augmented_libraries_svr4_read_feature:
12151 /* Additions to this list need to be well justified:
12152 pre-existing packets are OK; new packets are not. */
12160 /* This catches both forgetting to add a config command, and
12161 forgetting to remove a packet from the exception list. */
12162 gdb_assert (excepted == (remote_protocol_packets[i].name == NULL));
12166 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12167 Z sub-packet has its own set and show commands, but users may
12168 have sets to this variable in their .gdbinit files (or in their
12170 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure,
12171 &remote_Z_packet_detect, _("\
12172 Set use of remote protocol `Z' packets"), _("\
12173 Show use of remote protocol `Z' packets "), _("\
12174 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12176 set_remote_protocol_Z_packet_cmd,
12177 show_remote_protocol_Z_packet_cmd,
12178 /* FIXME: i18n: Use of remote protocol
12179 `Z' packets is %s. */
12180 &remote_set_cmdlist, &remote_show_cmdlist);
12182 add_prefix_cmd ("remote", class_files, remote_command, _("\
12183 Manipulate files on the remote system\n\
12184 Transfer files to and from the remote target system."),
12185 &remote_cmdlist, "remote ",
12186 0 /* allow-unknown */, &cmdlist);
12188 add_cmd ("put", class_files, remote_put_command,
12189 _("Copy a local file to the remote system."),
12192 add_cmd ("get", class_files, remote_get_command,
12193 _("Copy a remote file to the local system."),
12196 add_cmd ("delete", class_files, remote_delete_command,
12197 _("Delete a remote file."),
12200 remote_exec_file = xstrdup ("");
12201 add_setshow_string_noescape_cmd ("exec-file", class_files,
12202 &remote_exec_file, _("\
12203 Set the remote pathname for \"run\""), _("\
12204 Show the remote pathname for \"run\""), NULL, NULL, NULL,
12205 &remote_set_cmdlist, &remote_show_cmdlist);
12207 add_setshow_boolean_cmd ("range-stepping", class_run,
12208 &use_range_stepping, _("\
12209 Enable or disable range stepping."), _("\
12210 Show whether target-assisted range stepping is enabled."), _("\
12211 If on, and the target supports it, when stepping a source line, GDB\n\
12212 tells the target to step the corresponding range of addresses itself instead\n\
12213 of issuing multiple single-steps. This speeds up source level\n\
12214 stepping. If off, GDB always issues single-steps, even if range\n\
12215 stepping is supported by the target. The default is on."),
12216 set_range_stepping,
12217 show_range_stepping,
12221 /* Eventually initialize fileio. See fileio.c */
12222 initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist);
12224 /* Take advantage of the fact that the TID field is not used, to tag
12225 special ptids with it set to != 0. */
12226 magic_null_ptid = ptid_build (42000, -1, 1);
12227 not_sent_ptid = ptid_build (42000, -2, 1);
12228 any_thread_ptid = ptid_build (42000, 0, 1);
12230 target_buf_size = 2048;
12231 target_buf = xmalloc (target_buf_size);