1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* See the GDB User Guide for details of the GDB remote protocol. */
26 #include "gdb_string.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
46 #include <sys/types.h>
49 #include "event-loop.h"
50 #include "event-top.h"
56 #include "gdbcore.h" /* for exec_bfd */
58 /* Prototypes for local functions */
59 static void cleanup_sigint_signal_handler (void *dummy);
60 static void initialize_sigint_signal_handler (void);
61 static int getpkt_sane (char *buf, long sizeof_buf, int forever);
63 static void handle_remote_sigint (int);
64 static void handle_remote_sigint_twice (int);
65 static void async_remote_interrupt (gdb_client_data);
66 void async_remote_interrupt_twice (gdb_client_data);
68 static void build_remote_gdbarch_data (void);
70 static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len);
72 static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len);
74 static void remote_files_info (struct target_ops *ignore);
76 static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr,
77 int len, int should_write,
78 struct mem_attrib *attrib,
79 struct target_ops *target);
81 static void remote_prepare_to_store (void);
83 static void remote_fetch_registers (int regno);
85 static void remote_resume (ptid_t ptid, int step,
86 enum target_signal siggnal);
87 static void remote_async_resume (ptid_t ptid, int step,
88 enum target_signal siggnal);
89 static int remote_start_remote (struct ui_out *uiout, void *dummy);
91 static void remote_open (char *name, int from_tty);
92 static void remote_async_open (char *name, int from_tty);
94 static void extended_remote_open (char *name, int from_tty);
95 static void extended_remote_async_open (char *name, int from_tty);
97 static void remote_open_1 (char *, int, struct target_ops *, int extended_p,
100 static void remote_close (int quitting);
102 static void remote_store_registers (int regno);
104 static void remote_mourn (void);
105 static void remote_async_mourn (void);
107 static void extended_remote_restart (void);
109 static void extended_remote_mourn (void);
111 static void extended_remote_create_inferior (char *, char *, char **);
112 static void extended_remote_async_create_inferior (char *, char *, char **);
114 static void remote_mourn_1 (struct target_ops *);
116 static void remote_send (char *buf, long sizeof_buf);
118 static int readchar (int timeout);
120 static ptid_t remote_wait (ptid_t ptid,
121 struct target_waitstatus *status);
122 static ptid_t remote_async_wait (ptid_t ptid,
123 struct target_waitstatus *status);
125 static void remote_kill (void);
126 static void remote_async_kill (void);
128 static int tohex (int nib);
130 static void remote_detach (char *args, int from_tty);
131 static void remote_async_detach (char *args, int from_tty);
133 static void remote_interrupt (int signo);
135 static void remote_interrupt_twice (int signo);
137 static void interrupt_query (void);
139 static void set_thread (int, int);
141 static int remote_thread_alive (ptid_t);
143 static void get_offsets (void);
145 static long read_frame (char *buf, long sizeof_buf);
147 static int remote_insert_breakpoint (CORE_ADDR, char *);
149 static int remote_remove_breakpoint (CORE_ADDR, char *);
151 static int hexnumlen (ULONGEST num);
153 static void init_remote_ops (void);
155 static void init_extended_remote_ops (void);
157 static void init_remote_cisco_ops (void);
159 static struct target_ops remote_cisco_ops;
161 static void remote_stop (void);
163 static int ishex (int ch, int *val);
165 static int stubhex (int ch);
167 static int remote_query (int /*char */ , char *, char *, int *);
169 static int hexnumstr (char *, ULONGEST);
171 static int hexnumnstr (char *, ULONGEST, int);
173 static CORE_ADDR remote_address_masked (CORE_ADDR);
175 static void print_packet (char *);
177 static unsigned long crc32 (unsigned char *, int, unsigned int);
179 static void compare_sections_command (char *, int);
181 static void packet_command (char *, int);
183 static int stub_unpack_int (char *buff, int fieldlength);
185 static ptid_t remote_current_thread (ptid_t oldptid);
187 static void remote_find_new_threads (void);
189 static void record_currthread (int currthread);
191 static int fromhex (int a);
193 static int hex2bin (const char *hex, char *bin, int count);
195 static int bin2hex (const char *bin, char *hex, int count);
197 static int putpkt_binary (char *buf, int cnt);
199 static void check_binary_download (CORE_ADDR addr);
201 struct packet_config;
203 static void show_packet_config_cmd (struct packet_config *config);
205 static void update_packet_config (struct packet_config *config);
207 void _initialize_remote (void);
209 /* Description of the remote protocol. Strictly speaking, when the
210 target is open()ed, remote.c should create a per-target description
211 of the remote protocol using that target's architecture.
212 Unfortunatly, the target stack doesn't include local state. For
213 the moment keep the information in the target's architecture
218 long offset; /* Offset into G packet. */
219 long regnum; /* GDB's internal register number. */
220 LONGEST pnum; /* Remote protocol register number. */
221 int in_g_packet; /* Always part of G packet. */
222 /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */
223 /* char *name; == REGISTER_NAME (regnum); at present. */
228 /* Description of the remote protocol registers. */
229 long sizeof_g_packet;
231 /* Description of the remote protocol registers indexed by REGNUM
232 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
233 struct packet_reg *regs;
235 /* This is the size (in chars) of the first response to the ``g''
236 packet. It is used as a heuristic when determining the maximum
237 size of memory-read and memory-write packets. A target will
238 typically only reserve a buffer large enough to hold the ``g''
239 packet. The size does not include packet overhead (headers and
241 long actual_register_packet_size;
243 /* This is the maximum size (in chars) of a non read/write packet.
244 It is also used as a cap on the size of read/write packets. */
245 long remote_packet_size;
249 /* Handle for retreving the remote protocol data from gdbarch. */
250 static struct gdbarch_data *remote_gdbarch_data_handle;
252 static struct remote_state *
253 get_remote_state (void)
255 return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle);
259 init_remote_state (struct gdbarch *gdbarch)
262 struct remote_state *rs = xmalloc (sizeof (struct remote_state));
264 /* Start out by having the remote protocol mimic the existing
265 behavour - just copy in the description of the register cache. */
266 rs->sizeof_g_packet = DEPRECATED_REGISTER_BYTES; /* OK */
268 /* Assume a 1:1 regnum<->pnum table. */
269 rs->regs = xcalloc (NUM_REGS + NUM_PSEUDO_REGS, sizeof (struct packet_reg));
270 for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
272 struct packet_reg *r = &rs->regs[regnum];
275 r->offset = REGISTER_BYTE (regnum);
276 r->in_g_packet = (regnum < NUM_REGS);
277 /* ...size = REGISTER_RAW_SIZE (regnum); */
278 /* ...name = REGISTER_NAME (regnum); */
281 /* Default maximum number of characters in a packet body. Many
282 remote stubs have a hardwired buffer size of 400 bytes
283 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
284 as the maximum packet-size to ensure that the packet and an extra
285 NUL character can always fit in the buffer. This stops GDB
286 trashing stubs that try to squeeze an extra NUL into what is
287 already a full buffer (As of 1999-12-04 that was most stubs. */
288 rs->remote_packet_size = 400 - 1;
290 /* Should rs->sizeof_g_packet needs more space than the
291 default, adjust the size accordingly. Remember that each byte is
292 encoded as two characters. 32 is the overhead for the packet
293 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
294 (``$NN:G...#NN'') is a better guess, the below has been padded a
296 if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2))
297 rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32);
299 /* This one is filled in when a ``g'' packet is received. */
300 rs->actual_register_packet_size = 0;
306 free_remote_state (struct gdbarch *gdbarch, void *pointer)
308 struct remote_state *data = pointer;
313 static struct packet_reg *
314 packet_reg_from_regnum (struct remote_state *rs, long regnum)
316 if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS)
320 struct packet_reg *r = &rs->regs[regnum];
321 gdb_assert (r->regnum == regnum);
326 static struct packet_reg *
327 packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum)
330 for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
332 struct packet_reg *r = &rs->regs[i];
339 /* FIXME: graces/2002-08-08: These variables should eventually be
340 bound to an instance of the target object (as in gdbarch-tdep()),
341 when such a thing exists. */
343 /* This is set to the data address of the access causing the target
344 to stop for a watchpoint. */
345 static CORE_ADDR remote_watch_data_address;
347 /* This is non-zero if taregt stopped for a watchpoint. */
348 static int remote_stopped_by_watchpoint_p;
351 static struct target_ops remote_ops;
353 static struct target_ops extended_remote_ops;
355 /* Temporary target ops. Just like the remote_ops and
356 extended_remote_ops, but with asynchronous support. */
357 static struct target_ops remote_async_ops;
359 static struct target_ops extended_async_remote_ops;
361 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
362 ``forever'' still use the normal timeout mechanism. This is
363 currently used by the ASYNC code to guarentee that target reads
364 during the initial connect always time-out. Once getpkt has been
365 modified to return a timeout indication and, in turn
366 remote_wait()/wait_for_inferior() have gained a timeout parameter
368 static int wait_forever_enabled_p = 1;
371 /* This variable chooses whether to send a ^C or a break when the user
372 requests program interruption. Although ^C is usually what remote
373 systems expect, and that is the default here, sometimes a break is
374 preferable instead. */
376 static int remote_break;
378 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
379 remote_open knows that we don't have a file open when the program
381 static struct serial *remote_desc = NULL;
383 /* This is set by the target (thru the 'S' message)
384 to denote that the target is in kernel mode. */
385 static int cisco_kernel_mode = 0;
387 /* This variable sets the number of bits in an address that are to be
388 sent in a memory ("M" or "m") packet. Normally, after stripping
389 leading zeros, the entire address would be sent. This variable
390 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
391 initial implementation of remote.c restricted the address sent in
392 memory packets to ``host::sizeof long'' bytes - (typically 32
393 bits). Consequently, for 64 bit targets, the upper 32 bits of an
394 address was never sent. Since fixing this bug may cause a break in
395 some remote targets this variable is principly provided to
396 facilitate backward compatibility. */
398 static int remote_address_size;
400 /* Tempoary to track who currently owns the terminal. See
401 target_async_terminal_* for more details. */
403 static int remote_async_terminal_ours_p;
406 /* User configurable variables for the number of characters in a
407 memory read/write packet. MIN ((rs->remote_packet_size),
408 rs->sizeof_g_packet) is the default. Some targets need smaller
409 values (fifo overruns, et.al.) and some users need larger values
410 (speed up transfers). The variables ``preferred_*'' (the user
411 request), ``current_*'' (what was actually set) and ``forced_*''
412 (Positive - a soft limit, negative - a hard limit). */
414 struct memory_packet_config
421 /* Compute the current size of a read/write packet. Since this makes
422 use of ``actual_register_packet_size'' the computation is dynamic. */
425 get_memory_packet_size (struct memory_packet_config *config)
427 struct remote_state *rs = get_remote_state ();
428 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
429 law?) that some hosts don't cope very well with large alloca()
430 calls. Eventually the alloca() code will be replaced by calls to
431 xmalloc() and make_cleanups() allowing this restriction to either
432 be lifted or removed. */
433 #ifndef MAX_REMOTE_PACKET_SIZE
434 #define MAX_REMOTE_PACKET_SIZE 16384
436 /* NOTE: 16 is just chosen at random. */
437 #ifndef MIN_REMOTE_PACKET_SIZE
438 #define MIN_REMOTE_PACKET_SIZE 16
443 if (config->size <= 0)
444 what_they_get = MAX_REMOTE_PACKET_SIZE;
446 what_they_get = config->size;
450 what_they_get = (rs->remote_packet_size);
451 /* Limit the packet to the size specified by the user. */
453 && what_they_get > config->size)
454 what_they_get = config->size;
455 /* Limit it to the size of the targets ``g'' response. */
456 if ((rs->actual_register_packet_size) > 0
457 && what_they_get > (rs->actual_register_packet_size))
458 what_they_get = (rs->actual_register_packet_size);
460 if (what_they_get > MAX_REMOTE_PACKET_SIZE)
461 what_they_get = MAX_REMOTE_PACKET_SIZE;
462 if (what_they_get < MIN_REMOTE_PACKET_SIZE)
463 what_they_get = MIN_REMOTE_PACKET_SIZE;
464 return what_they_get;
467 /* Update the size of a read/write packet. If they user wants
468 something really big then do a sanity check. */
471 set_memory_packet_size (char *args, struct memory_packet_config *config)
473 int fixed_p = config->fixed_p;
474 long size = config->size;
476 error ("Argument required (integer, `fixed' or `limited').");
477 else if (strcmp (args, "hard") == 0
478 || strcmp (args, "fixed") == 0)
480 else if (strcmp (args, "soft") == 0
481 || strcmp (args, "limit") == 0)
486 size = strtoul (args, &end, 0);
488 error ("Invalid %s (bad syntax).", config->name);
490 /* Instead of explicitly capping the size of a packet to
491 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
492 instead allowed to set the size to something arbitrarily
494 if (size > MAX_REMOTE_PACKET_SIZE)
495 error ("Invalid %s (too large).", config->name);
499 if (fixed_p && !config->fixed_p)
501 if (! query ("The target may not be able to correctly handle a %s\n"
502 "of %ld bytes. Change the packet size? ",
504 error ("Packet size not changed.");
506 /* Update the config. */
507 config->fixed_p = fixed_p;
512 show_memory_packet_size (struct memory_packet_config *config)
514 printf_filtered ("The %s is %ld. ", config->name, config->size);
516 printf_filtered ("Packets are fixed at %ld bytes.\n",
517 get_memory_packet_size (config));
519 printf_filtered ("Packets are limited to %ld bytes.\n",
520 get_memory_packet_size (config));
523 static struct memory_packet_config memory_write_packet_config =
525 "memory-write-packet-size",
529 set_memory_write_packet_size (char *args, int from_tty)
531 set_memory_packet_size (args, &memory_write_packet_config);
535 show_memory_write_packet_size (char *args, int from_tty)
537 show_memory_packet_size (&memory_write_packet_config);
541 get_memory_write_packet_size (void)
543 return get_memory_packet_size (&memory_write_packet_config);
546 static struct memory_packet_config memory_read_packet_config =
548 "memory-read-packet-size",
552 set_memory_read_packet_size (char *args, int from_tty)
554 set_memory_packet_size (args, &memory_read_packet_config);
558 show_memory_read_packet_size (char *args, int from_tty)
560 show_memory_packet_size (&memory_read_packet_config);
564 get_memory_read_packet_size (void)
566 struct remote_state *rs = get_remote_state ();
567 long size = get_memory_packet_size (&memory_read_packet_config);
568 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
569 extra buffer size argument before the memory read size can be
570 increased beyond (rs->remote_packet_size). */
571 if (size > (rs->remote_packet_size))
572 size = (rs->remote_packet_size);
577 /* Generic configuration support for packets the stub optionally
578 supports. Allows the user to specify the use of the packet as well
579 as allowing GDB to auto-detect support in the remote stub. */
583 PACKET_SUPPORT_UNKNOWN = 0,
592 enum auto_boolean detect;
593 enum packet_support support;
596 /* Analyze a packet's return value and update the packet config
607 update_packet_config (struct packet_config *config)
609 switch (config->detect)
611 case AUTO_BOOLEAN_TRUE:
612 config->support = PACKET_ENABLE;
614 case AUTO_BOOLEAN_FALSE:
615 config->support = PACKET_DISABLE;
617 case AUTO_BOOLEAN_AUTO:
618 config->support = PACKET_SUPPORT_UNKNOWN;
624 show_packet_config_cmd (struct packet_config *config)
626 char *support = "internal-error";
627 switch (config->support)
633 support = "disabled";
635 case PACKET_SUPPORT_UNKNOWN:
639 switch (config->detect)
641 case AUTO_BOOLEAN_AUTO:
642 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
643 config->name, config->title, support);
645 case AUTO_BOOLEAN_TRUE:
646 case AUTO_BOOLEAN_FALSE:
647 printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
648 config->name, config->title, support);
654 add_packet_config_cmd (struct packet_config *config,
657 cmd_sfunc_ftype *set_func,
658 cmd_sfunc_ftype *show_func,
659 struct cmd_list_element **set_remote_list,
660 struct cmd_list_element **show_remote_list,
663 struct cmd_list_element *set_cmd;
664 struct cmd_list_element *show_cmd;
669 config->title = title;
670 config->detect = AUTO_BOOLEAN_AUTO;
671 config->support = PACKET_SUPPORT_UNKNOWN;
672 xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet",
674 xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet",
676 /* set/show TITLE-packet {auto,on,off} */
677 xasprintf (&cmd_name, "%s-packet", title);
678 add_setshow_auto_boolean_cmd (cmd_name, class_obscure,
679 &config->detect, set_doc, show_doc,
681 set_remote_list, show_remote_list);
682 /* set/show remote NAME-packet {auto,on,off} -- legacy */
686 xasprintf (&legacy_name, "%s-packet", name);
687 add_alias_cmd (legacy_name, cmd_name, class_obscure, 0,
689 add_alias_cmd (legacy_name, cmd_name, class_obscure, 0,
694 static enum packet_result
695 packet_ok (const char *buf, struct packet_config *config)
699 /* The stub recognized the packet request. Check that the
700 operation succeeded. */
701 switch (config->support)
703 case PACKET_SUPPORT_UNKNOWN:
705 fprintf_unfiltered (gdb_stdlog,
706 "Packet %s (%s) is supported\n",
707 config->name, config->title);
708 config->support = PACKET_ENABLE;
711 internal_error (__FILE__, __LINE__,
712 "packet_ok: attempt to use a disabled packet");
717 if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0')
718 /* "OK" - definitly OK. */
721 && isxdigit (buf[1]) && isxdigit (buf[2])
723 /* "Enn" - definitly an error. */
725 /* The packet may or may not be OK. Just assume it is */
730 /* The stub does not support the packet. */
731 switch (config->support)
734 if (config->detect == AUTO_BOOLEAN_AUTO)
735 /* If the stub previously indicated that the packet was
736 supported then there is a protocol error.. */
737 error ("Protocol error: %s (%s) conflicting enabled responses.",
738 config->name, config->title);
740 /* The user set it wrong. */
741 error ("Enabled packet %s (%s) not recognized by stub",
742 config->name, config->title);
744 case PACKET_SUPPORT_UNKNOWN:
746 fprintf_unfiltered (gdb_stdlog,
747 "Packet %s (%s) is NOT supported\n",
748 config->name, config->title);
749 config->support = PACKET_DISABLE;
754 return PACKET_UNKNOWN;
758 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
759 static struct packet_config remote_protocol_qSymbol;
762 set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty,
763 struct cmd_list_element *c)
765 update_packet_config (&remote_protocol_qSymbol);
769 show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty,
770 struct cmd_list_element *c)
772 show_packet_config_cmd (&remote_protocol_qSymbol);
775 /* Should we try the 'e' (step over range) request? */
776 static struct packet_config remote_protocol_e;
779 set_remote_protocol_e_packet_cmd (char *args, int from_tty,
780 struct cmd_list_element *c)
782 update_packet_config (&remote_protocol_e);
786 show_remote_protocol_e_packet_cmd (char *args, int from_tty,
787 struct cmd_list_element *c)
789 show_packet_config_cmd (&remote_protocol_e);
793 /* Should we try the 'E' (step over range / w signal #) request? */
794 static struct packet_config remote_protocol_E;
797 set_remote_protocol_E_packet_cmd (char *args, int from_tty,
798 struct cmd_list_element *c)
800 update_packet_config (&remote_protocol_E);
804 show_remote_protocol_E_packet_cmd (char *args, int from_tty,
805 struct cmd_list_element *c)
807 show_packet_config_cmd (&remote_protocol_E);
811 /* Should we try the 'P' (set register) request? */
813 static struct packet_config remote_protocol_P;
816 set_remote_protocol_P_packet_cmd (char *args, int from_tty,
817 struct cmd_list_element *c)
819 update_packet_config (&remote_protocol_P);
823 show_remote_protocol_P_packet_cmd (char *args, int from_tty,
824 struct cmd_list_element *c)
826 show_packet_config_cmd (&remote_protocol_P);
829 /* Should we try one of the 'Z' requests? */
833 Z_PACKET_SOFTWARE_BP,
834 Z_PACKET_HARDWARE_BP,
841 static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES];
843 /* FIXME: Instead of having all these boiler plate functions, the
844 command callback should include a context argument. */
847 set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty,
848 struct cmd_list_element *c)
850 update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]);
854 show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty,
855 struct cmd_list_element *c)
857 show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]);
861 set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty,
862 struct cmd_list_element *c)
864 update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]);
868 show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty,
869 struct cmd_list_element *c)
871 show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]);
875 set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty,
876 struct cmd_list_element *c)
878 update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]);
882 show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty,
883 struct cmd_list_element *c)
885 show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]);
889 set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty,
890 struct cmd_list_element *c)
892 update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]);
896 show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty,
897 struct cmd_list_element *c)
899 show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]);
903 set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty,
904 struct cmd_list_element *c)
906 update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]);
910 show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty,
911 struct cmd_list_element *c)
913 show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]);
916 /* For compatibility with older distributions. Provide a ``set remote
917 Z-packet ...'' command that updates all the Z packet types. */
919 static enum auto_boolean remote_Z_packet_detect;
922 set_remote_protocol_Z_packet_cmd (char *args, int from_tty,
923 struct cmd_list_element *c)
926 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
928 remote_protocol_Z[i].detect = remote_Z_packet_detect;
929 update_packet_config (&remote_protocol_Z[i]);
934 show_remote_protocol_Z_packet_cmd (char *args, int from_tty,
935 struct cmd_list_element *c)
938 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
940 show_packet_config_cmd (&remote_protocol_Z[i]);
944 /* Should we try the 'X' (remote binary download) packet?
946 This variable (available to the user via "set remote X-packet")
947 dictates whether downloads are sent in binary (via the 'X' packet).
948 We assume that the stub can, and attempt to do it. This will be
949 cleared if the stub does not understand it. This switch is still
950 needed, though in cases when the packet is supported in the stub,
951 but the connection does not allow it (i.e., 7-bit serial connection
954 static struct packet_config remote_protocol_binary_download;
956 /* Should we try the 'ThreadInfo' query packet?
958 This variable (NOT available to the user: auto-detect only!)
959 determines whether GDB will use the new, simpler "ThreadInfo"
960 query or the older, more complex syntax for thread queries.
961 This is an auto-detect variable (set to true at each connect,
962 and set to false when the target fails to recognize it). */
964 static int use_threadinfo_query;
965 static int use_threadextra_query;
968 set_remote_protocol_binary_download_cmd (char *args,
970 struct cmd_list_element *c)
972 update_packet_config (&remote_protocol_binary_download);
976 show_remote_protocol_binary_download_cmd (char *args, int from_tty,
977 struct cmd_list_element *c)
979 show_packet_config_cmd (&remote_protocol_binary_download);
983 /* Tokens for use by the asynchronous signal handlers for SIGINT */
984 static void *sigint_remote_twice_token;
985 static void *sigint_remote_token;
987 /* These are pointers to hook functions that may be set in order to
988 modify resume/wait behavior for a particular architecture. */
990 void (*target_resume_hook) (void);
991 void (*target_wait_loop_hook) (void);
995 /* These are the threads which we last sent to the remote system.
996 -1 for all or -2 for not sent yet. */
997 static int general_thread;
998 static int continue_thread;
1000 /* Call this function as a result of
1001 1) A halt indication (T packet) containing a thread id
1002 2) A direct query of currthread
1003 3) Successful execution of set thread
1007 record_currthread (int currthread)
1009 general_thread = currthread;
1011 /* If this is a new thread, add it to GDB's thread list.
1012 If we leave it up to WFI to do this, bad things will happen. */
1013 if (!in_thread_list (pid_to_ptid (currthread)))
1015 add_thread (pid_to_ptid (currthread));
1016 ui_out_text (uiout, "[New ");
1017 ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread)));
1018 ui_out_text (uiout, "]\n");
1022 #define MAGIC_NULL_PID 42000
1025 set_thread (int th, int gen)
1027 struct remote_state *rs = get_remote_state ();
1028 char *buf = alloca (rs->remote_packet_size);
1029 int state = gen ? general_thread : continue_thread;
1035 buf[1] = gen ? 'g' : 'c';
1036 if (th == MAGIC_NULL_PID)
1042 sprintf (&buf[2], "-%x", -th);
1044 sprintf (&buf[2], "%x", th);
1046 getpkt (buf, (rs->remote_packet_size), 0);
1048 general_thread = th;
1050 continue_thread = th;
1053 /* Return nonzero if the thread TH is still alive on the remote system. */
1056 remote_thread_alive (ptid_t ptid)
1058 int tid = PIDGET (ptid);
1062 sprintf (buf, "T-%08x", -tid);
1064 sprintf (buf, "T%08x", tid);
1066 getpkt (buf, sizeof (buf), 0);
1067 return (buf[0] == 'O' && buf[1] == 'K');
1070 /* About these extended threadlist and threadinfo packets. They are
1071 variable length packets but, the fields within them are often fixed
1072 length. They are redundent enough to send over UDP as is the
1073 remote protocol in general. There is a matching unit test module
1076 #define OPAQUETHREADBYTES 8
1078 /* a 64 bit opaque identifier */
1079 typedef unsigned char threadref[OPAQUETHREADBYTES];
1081 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1082 protocol encoding, and remote.c. it is not particularly changable */
1084 /* Right now, the internal structure is int. We want it to be bigger.
1088 typedef int gdb_threadref; /* internal GDB thread reference */
1090 /* gdb_ext_thread_info is an internal GDB data structure which is
1091 equivalint to the reply of the remote threadinfo packet */
1093 struct gdb_ext_thread_info
1095 threadref threadid; /* External form of thread reference */
1096 int active; /* Has state interesting to GDB? , regs, stack */
1097 char display[256]; /* Brief state display, name, blocked/syspended */
1098 char shortname[32]; /* To be used to name threads */
1099 char more_display[256]; /* Long info, statistics, queue depth, whatever */
1102 /* The volume of remote transfers can be limited by submitting
1103 a mask containing bits specifying the desired information.
1104 Use a union of these values as the 'selection' parameter to
1105 get_thread_info. FIXME: Make these TAG names more thread specific.
1108 #define TAG_THREADID 1
1109 #define TAG_EXISTS 2
1110 #define TAG_DISPLAY 4
1111 #define TAG_THREADNAME 8
1112 #define TAG_MOREDISPLAY 16
1114 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1116 char *unpack_varlen_hex (char *buff, ULONGEST *result);
1118 static char *unpack_nibble (char *buf, int *val);
1120 static char *pack_nibble (char *buf, int nibble);
1122 static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte);
1124 static char *unpack_byte (char *buf, int *value);
1126 static char *pack_int (char *buf, int value);
1128 static char *unpack_int (char *buf, int *value);
1130 static char *unpack_string (char *src, char *dest, int length);
1132 static char *pack_threadid (char *pkt, threadref * id);
1134 static char *unpack_threadid (char *inbuf, threadref * id);
1136 void int_to_threadref (threadref * id, int value);
1138 static int threadref_to_int (threadref * ref);
1140 static void copy_threadref (threadref * dest, threadref * src);
1142 static int threadmatch (threadref * dest, threadref * src);
1144 static char *pack_threadinfo_request (char *pkt, int mode, threadref * id);
1146 static int remote_unpack_thread_info_response (char *pkt,
1147 threadref * expectedref,
1148 struct gdb_ext_thread_info
1152 static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */
1153 struct gdb_ext_thread_info *info);
1155 static int adapt_remote_get_threadinfo (gdb_threadref * ref,
1157 struct gdb_ext_thread_info *info);
1159 static char *pack_threadlist_request (char *pkt, int startflag,
1161 threadref * nextthread);
1163 static int parse_threadlist_response (char *pkt,
1165 threadref * original_echo,
1166 threadref * resultlist, int *doneflag);
1168 static int remote_get_threadlist (int startflag,
1169 threadref * nextthread,
1172 int *result_count, threadref * threadlist);
1174 typedef int (*rmt_thread_action) (threadref * ref, void *context);
1176 static int remote_threadlist_iterator (rmt_thread_action stepfunction,
1177 void *context, int looplimit);
1179 static int remote_newthread_step (threadref * ref, void *context);
1181 /* encode 64 bits in 16 chars of hex */
1183 static const char hexchars[] = "0123456789abcdef";
1186 ishex (int ch, int *val)
1188 if ((ch >= 'a') && (ch <= 'f'))
1190 *val = ch - 'a' + 10;
1193 if ((ch >= 'A') && (ch <= 'F'))
1195 *val = ch - 'A' + 10;
1198 if ((ch >= '0') && (ch <= '9'))
1209 if (ch >= 'a' && ch <= 'f')
1210 return ch - 'a' + 10;
1211 if (ch >= '0' && ch <= '9')
1213 if (ch >= 'A' && ch <= 'F')
1214 return ch - 'A' + 10;
1219 stub_unpack_int (char *buff, int fieldlength)
1226 nibble = stubhex (*buff++);
1230 retval = retval << 4;
1236 unpack_varlen_hex (char *buff, /* packet to parse */
1242 while (ishex (*buff, &nibble))
1245 retval = retval << 4;
1246 retval |= nibble & 0x0f;
1253 unpack_nibble (char *buf, int *val)
1255 ishex (*buf++, val);
1260 pack_nibble (char *buf, int nibble)
1262 *buf++ = hexchars[(nibble & 0x0f)];
1267 pack_hex_byte (char *pkt, int byte)
1269 *pkt++ = hexchars[(byte >> 4) & 0xf];
1270 *pkt++ = hexchars[(byte & 0xf)];
1275 unpack_byte (char *buf, int *value)
1277 *value = stub_unpack_int (buf, 2);
1282 pack_int (char *buf, int value)
1284 buf = pack_hex_byte (buf, (value >> 24) & 0xff);
1285 buf = pack_hex_byte (buf, (value >> 16) & 0xff);
1286 buf = pack_hex_byte (buf, (value >> 8) & 0x0ff);
1287 buf = pack_hex_byte (buf, (value & 0xff));
1292 unpack_int (char *buf, int *value)
1294 *value = stub_unpack_int (buf, 8);
1298 #if 0 /* currently unused, uncomment when needed */
1299 static char *pack_string (char *pkt, char *string);
1302 pack_string (char *pkt, char *string)
1307 len = strlen (string);
1309 len = 200; /* Bigger than most GDB packets, junk??? */
1310 pkt = pack_hex_byte (pkt, len);
1314 if ((ch == '\0') || (ch == '#'))
1315 ch = '*'; /* Protect encapsulation */
1320 #endif /* 0 (unused) */
1323 unpack_string (char *src, char *dest, int length)
1332 pack_threadid (char *pkt, threadref *id)
1335 unsigned char *altid;
1337 altid = (unsigned char *) id;
1338 limit = pkt + BUF_THREAD_ID_SIZE;
1340 pkt = pack_hex_byte (pkt, *altid++);
1346 unpack_threadid (char *inbuf, threadref *id)
1349 char *limit = inbuf + BUF_THREAD_ID_SIZE;
1352 altref = (char *) id;
1354 while (inbuf < limit)
1356 x = stubhex (*inbuf++);
1357 y = stubhex (*inbuf++);
1358 *altref++ = (x << 4) | y;
1363 /* Externally, threadrefs are 64 bits but internally, they are still
1364 ints. This is due to a mismatch of specifications. We would like
1365 to use 64bit thread references internally. This is an adapter
1369 int_to_threadref (threadref *id, int value)
1371 unsigned char *scan;
1373 scan = (unsigned char *) id;
1379 *scan++ = (value >> 24) & 0xff;
1380 *scan++ = (value >> 16) & 0xff;
1381 *scan++ = (value >> 8) & 0xff;
1382 *scan++ = (value & 0xff);
1386 threadref_to_int (threadref *ref)
1389 unsigned char *scan;
1391 scan = (char *) ref;
1395 value = (value << 8) | ((*scan++) & 0xff);
1400 copy_threadref (threadref *dest, threadref *src)
1403 unsigned char *csrc, *cdest;
1405 csrc = (unsigned char *) src;
1406 cdest = (unsigned char *) dest;
1413 threadmatch (threadref *dest, threadref *src)
1415 /* things are broken right now, so just assume we got a match */
1417 unsigned char *srcp, *destp;
1419 srcp = (char *) src;
1420 destp = (char *) dest;
1424 result &= (*srcp++ == *destp++) ? 1 : 0;
1431 threadid:1, # always request threadid
1438 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1441 pack_threadinfo_request (char *pkt, int mode, threadref *id)
1443 *pkt++ = 'q'; /* Info Query */
1444 *pkt++ = 'P'; /* process or thread info */
1445 pkt = pack_int (pkt, mode); /* mode */
1446 pkt = pack_threadid (pkt, id); /* threadid */
1447 *pkt = '\0'; /* terminate */
1451 /* These values tag the fields in a thread info response packet */
1452 /* Tagging the fields allows us to request specific fields and to
1453 add more fields as time goes by */
1455 #define TAG_THREADID 1 /* Echo the thread identifier */
1456 #define TAG_EXISTS 2 /* Is this process defined enough to
1457 fetch registers and its stack */
1458 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1459 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1460 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1464 remote_unpack_thread_info_response (char *pkt, threadref *expectedref,
1465 struct gdb_ext_thread_info *info)
1467 struct remote_state *rs = get_remote_state ();
1471 char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */
1474 /* info->threadid = 0; FIXME: implement zero_threadref */
1476 info->display[0] = '\0';
1477 info->shortname[0] = '\0';
1478 info->more_display[0] = '\0';
1480 /* Assume the characters indicating the packet type have been stripped */
1481 pkt = unpack_int (pkt, &mask); /* arg mask */
1482 pkt = unpack_threadid (pkt, &ref);
1485 warning ("Incomplete response to threadinfo request\n");
1486 if (!threadmatch (&ref, expectedref))
1487 { /* This is an answer to a different request */
1488 warning ("ERROR RMT Thread info mismatch\n");
1491 copy_threadref (&info->threadid, &ref);
1493 /* Loop on tagged fields , try to bail if somthing goes wrong */
1495 while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */
1497 pkt = unpack_int (pkt, &tag); /* tag */
1498 pkt = unpack_byte (pkt, &length); /* length */
1499 if (!(tag & mask)) /* tags out of synch with mask */
1501 warning ("ERROR RMT: threadinfo tag mismatch\n");
1505 if (tag == TAG_THREADID)
1509 warning ("ERROR RMT: length of threadid is not 16\n");
1513 pkt = unpack_threadid (pkt, &ref);
1514 mask = mask & ~TAG_THREADID;
1517 if (tag == TAG_EXISTS)
1519 info->active = stub_unpack_int (pkt, length);
1521 mask = mask & ~(TAG_EXISTS);
1524 warning ("ERROR RMT: 'exists' length too long\n");
1530 if (tag == TAG_THREADNAME)
1532 pkt = unpack_string (pkt, &info->shortname[0], length);
1533 mask = mask & ~TAG_THREADNAME;
1536 if (tag == TAG_DISPLAY)
1538 pkt = unpack_string (pkt, &info->display[0], length);
1539 mask = mask & ~TAG_DISPLAY;
1542 if (tag == TAG_MOREDISPLAY)
1544 pkt = unpack_string (pkt, &info->more_display[0], length);
1545 mask = mask & ~TAG_MOREDISPLAY;
1548 warning ("ERROR RMT: unknown thread info tag\n");
1549 break; /* Not a tag we know about */
1555 remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */
1556 struct gdb_ext_thread_info *info)
1558 struct remote_state *rs = get_remote_state ();
1560 char *threadinfo_pkt = alloca (rs->remote_packet_size);
1562 pack_threadinfo_request (threadinfo_pkt, fieldset, threadid);
1563 putpkt (threadinfo_pkt);
1564 getpkt (threadinfo_pkt, (rs->remote_packet_size), 0);
1565 result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid,
1570 /* Unfortunately, 61 bit thread-ids are bigger than the internal
1571 representation of a threadid. */
1574 adapt_remote_get_threadinfo (gdb_threadref *ref, int selection,
1575 struct gdb_ext_thread_info *info)
1579 int_to_threadref (&lclref, *ref);
1580 return remote_get_threadinfo (&lclref, selection, info);
1583 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1586 pack_threadlist_request (char *pkt, int startflag, int threadcount,
1587 threadref *nextthread)
1589 *pkt++ = 'q'; /* info query packet */
1590 *pkt++ = 'L'; /* Process LIST or threadLIST request */
1591 pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */
1592 pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */
1593 pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */
1598 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1601 parse_threadlist_response (char *pkt, int result_limit,
1602 threadref *original_echo, threadref *resultlist,
1605 struct remote_state *rs = get_remote_state ();
1607 int count, resultcount, done;
1610 /* Assume the 'q' and 'M chars have been stripped. */
1611 limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */
1612 pkt = unpack_byte (pkt, &count); /* count field */
1613 pkt = unpack_nibble (pkt, &done);
1614 /* The first threadid is the argument threadid. */
1615 pkt = unpack_threadid (pkt, original_echo); /* should match query packet */
1616 while ((count-- > 0) && (pkt < limit))
1618 pkt = unpack_threadid (pkt, resultlist++);
1619 if (resultcount++ >= result_limit)
1628 remote_get_threadlist (int startflag, threadref *nextthread, int result_limit,
1629 int *done, int *result_count, threadref *threadlist)
1631 struct remote_state *rs = get_remote_state ();
1632 static threadref echo_nextthread;
1633 char *threadlist_packet = alloca (rs->remote_packet_size);
1634 char *t_response = alloca (rs->remote_packet_size);
1637 /* Trancate result limit to be smaller than the packet size */
1638 if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size))
1639 result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2;
1641 pack_threadlist_request (threadlist_packet,
1642 startflag, result_limit, nextthread);
1643 putpkt (threadlist_packet);
1644 getpkt (t_response, (rs->remote_packet_size), 0);
1647 parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread,
1650 if (!threadmatch (&echo_nextthread, nextthread))
1652 /* FIXME: This is a good reason to drop the packet */
1653 /* Possably, there is a duplicate response */
1655 retransmit immediatly - race conditions
1656 retransmit after timeout - yes
1658 wait for packet, then exit
1660 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1661 return 0; /* I choose simply exiting */
1663 if (*result_count <= 0)
1667 warning ("RMT ERROR : failed to get remote thread list\n");
1670 return result; /* break; */
1672 if (*result_count > result_limit)
1675 warning ("RMT ERROR: threadlist response longer than requested\n");
1681 /* This is the interface between remote and threads, remotes upper interface */
1683 /* remote_find_new_threads retrieves the thread list and for each
1684 thread in the list, looks up the thread in GDB's internal list,
1685 ading the thread if it does not already exist. This involves
1686 getting partial thread lists from the remote target so, polling the
1687 quit_flag is required. */
1690 /* About this many threadisds fit in a packet. */
1692 #define MAXTHREADLISTRESULTS 32
1695 remote_threadlist_iterator (rmt_thread_action stepfunction, void *context,
1698 int done, i, result_count;
1702 static threadref nextthread;
1703 static threadref resultthreadlist[MAXTHREADLISTRESULTS];
1708 if (loopcount++ > looplimit)
1711 warning ("Remote fetch threadlist -infinite loop-\n");
1714 if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS,
1715 &done, &result_count, resultthreadlist))
1720 /* clear for later iterations */
1722 /* Setup to resume next batch of thread references, set nextthread. */
1723 if (result_count >= 1)
1724 copy_threadref (&nextthread, &resultthreadlist[result_count - 1]);
1726 while (result_count--)
1727 if (!(result = (*stepfunction) (&resultthreadlist[i++], context)))
1734 remote_newthread_step (threadref *ref, void *context)
1738 ptid = pid_to_ptid (threadref_to_int (ref));
1740 if (!in_thread_list (ptid))
1742 return 1; /* continue iterator */
1745 #define CRAZY_MAX_THREADS 1000
1748 remote_current_thread (ptid_t oldpid)
1750 struct remote_state *rs = get_remote_state ();
1751 char *buf = alloca (rs->remote_packet_size);
1754 getpkt (buf, (rs->remote_packet_size), 0);
1755 if (buf[0] == 'Q' && buf[1] == 'C')
1756 return pid_to_ptid (strtol (&buf[2], NULL, 16));
1761 /* Find new threads for info threads command.
1762 * Original version, using John Metzler's thread protocol.
1766 remote_find_new_threads (void)
1768 remote_threadlist_iterator (remote_newthread_step, 0,
1770 if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */
1771 inferior_ptid = remote_current_thread (inferior_ptid);
1775 * Find all threads for info threads command.
1776 * Uses new thread protocol contributed by Cisco.
1777 * Falls back and attempts to use the older method (above)
1778 * if the target doesn't respond to the new method.
1782 remote_threads_info (void)
1784 struct remote_state *rs = get_remote_state ();
1785 char *buf = alloca (rs->remote_packet_size);
1789 if (remote_desc == 0) /* paranoia */
1790 error ("Command can only be used when connected to the remote target.");
1792 if (use_threadinfo_query)
1794 putpkt ("qfThreadInfo");
1796 getpkt (bufp, (rs->remote_packet_size), 0);
1797 if (bufp[0] != '\0') /* q packet recognized */
1799 while (*bufp++ == 'm') /* reply contains one or more TID */
1803 tid = strtol (bufp, &bufp, 16);
1804 if (tid != 0 && !in_thread_list (pid_to_ptid (tid)))
1805 add_thread (pid_to_ptid (tid));
1807 while (*bufp++ == ','); /* comma-separated list */
1808 putpkt ("qsThreadInfo");
1810 getpkt (bufp, (rs->remote_packet_size), 0);
1816 /* Else fall back to old method based on jmetzler protocol. */
1817 use_threadinfo_query = 0;
1818 remote_find_new_threads ();
1823 * Collect a descriptive string about the given thread.
1824 * The target may say anything it wants to about the thread
1825 * (typically info about its blocked / runnable state, name, etc.).
1826 * This string will appear in the info threads display.
1828 * Optional: targets are not required to implement this function.
1832 remote_threads_extra_info (struct thread_info *tp)
1834 struct remote_state *rs = get_remote_state ();
1838 struct gdb_ext_thread_info threadinfo;
1839 static char display_buf[100]; /* arbitrary... */
1840 char *bufp = alloca (rs->remote_packet_size);
1841 int n = 0; /* position in display_buf */
1843 if (remote_desc == 0) /* paranoia */
1844 internal_error (__FILE__, __LINE__,
1845 "remote_threads_extra_info");
1847 if (use_threadextra_query)
1849 sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid));
1851 getpkt (bufp, (rs->remote_packet_size), 0);
1854 n = min (strlen (bufp) / 2, sizeof (display_buf));
1855 result = hex2bin (bufp, display_buf, n);
1856 display_buf [result] = '\0';
1861 /* If the above query fails, fall back to the old method. */
1862 use_threadextra_query = 0;
1863 set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
1864 | TAG_MOREDISPLAY | TAG_DISPLAY;
1865 int_to_threadref (&id, PIDGET (tp->ptid));
1866 if (remote_get_threadinfo (&id, set, &threadinfo))
1867 if (threadinfo.active)
1869 if (*threadinfo.shortname)
1870 n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname);
1871 if (*threadinfo.display)
1872 n += sprintf(&display_buf[n], " State: %s,", threadinfo.display);
1873 if (*threadinfo.more_display)
1874 n += sprintf(&display_buf[n], " Priority: %s",
1875 threadinfo.more_display);
1879 /* for purely cosmetic reasons, clear up trailing commas */
1880 if (',' == display_buf[n-1])
1881 display_buf[n-1] = ' ';
1890 /* Restart the remote side; this is an extended protocol operation. */
1893 extended_remote_restart (void)
1895 struct remote_state *rs = get_remote_state ();
1896 char *buf = alloca (rs->remote_packet_size);
1898 /* Send the restart command; for reasons I don't understand the
1899 remote side really expects a number after the "R". */
1901 sprintf (&buf[1], "%x", 0);
1904 /* Now query for status so this looks just like we restarted
1905 gdbserver from scratch. */
1907 getpkt (buf, (rs->remote_packet_size), 0);
1910 /* Clean up connection to a remote debugger. */
1914 remote_close (int quitting)
1917 serial_close (remote_desc);
1921 /* Query the remote side for the text, data and bss offsets. */
1926 struct remote_state *rs = get_remote_state ();
1927 char *buf = alloca (rs->remote_packet_size);
1930 CORE_ADDR text_addr, data_addr, bss_addr;
1931 struct section_offsets *offs;
1933 putpkt ("qOffsets");
1935 getpkt (buf, (rs->remote_packet_size), 0);
1937 if (buf[0] == '\000')
1938 return; /* Return silently. Stub doesn't support
1942 warning ("Remote failure reply: %s", buf);
1946 /* Pick up each field in turn. This used to be done with scanf, but
1947 scanf will make trouble if CORE_ADDR size doesn't match
1948 conversion directives correctly. The following code will work
1949 with any size of CORE_ADDR. */
1950 text_addr = data_addr = bss_addr = 0;
1954 if (strncmp (ptr, "Text=", 5) == 0)
1957 /* Don't use strtol, could lose on big values. */
1958 while (*ptr && *ptr != ';')
1959 text_addr = (text_addr << 4) + fromhex (*ptr++);
1964 if (!lose && strncmp (ptr, ";Data=", 6) == 0)
1967 while (*ptr && *ptr != ';')
1968 data_addr = (data_addr << 4) + fromhex (*ptr++);
1973 if (!lose && strncmp (ptr, ";Bss=", 5) == 0)
1976 while (*ptr && *ptr != ';')
1977 bss_addr = (bss_addr << 4) + fromhex (*ptr++);
1983 error ("Malformed response to offset query, %s", buf);
1985 if (symfile_objfile == NULL)
1988 offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
1989 memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
1991 offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr;
1993 /* This is a temporary kludge to force data and bss to use the same offsets
1994 because that's what nlmconv does now. The real solution requires changes
1995 to the stub and remote.c that I don't have time to do right now. */
1997 offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr;
1998 offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr;
2000 objfile_relocate (symfile_objfile, offs);
2004 * Cisco version of section offsets:
2006 * Instead of having GDB query the target for the section offsets,
2007 * Cisco lets the target volunteer the information! It's also in
2008 * a different format, so here are the functions that will decode
2009 * a section offset packet from a Cisco target.
2013 * Function: remote_cisco_section_offsets
2015 * Returns: zero for success, non-zero for failure
2019 remote_cisco_section_offsets (bfd_vma text_addr,
2022 bfd_signed_vma *text_offs,
2023 bfd_signed_vma *data_offs,
2024 bfd_signed_vma *bss_offs)
2026 bfd_vma text_base, data_base, bss_base;
2027 struct minimal_symbol *start;
2032 if (symfile_objfile == NULL)
2033 return -1; /* no can do nothin' */
2035 start = lookup_minimal_symbol ("_start", NULL, NULL);
2037 return -1; /* Can't find "_start" symbol */
2039 data_base = bss_base = 0;
2040 text_base = SYMBOL_VALUE_ADDRESS (start);
2042 abfd = symfile_objfile->obfd;
2043 for (sect = abfd->sections;
2047 const char *p = bfd_get_section_name (abfd, sect);
2049 if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */
2050 if (data_base == 0 ||
2051 data_base > bfd_get_section_vma (abfd, sect))
2052 data_base = bfd_get_section_vma (abfd, sect);
2053 if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */
2054 if (bss_base == 0 ||
2055 bss_base > bfd_get_section_vma (abfd, sect))
2056 bss_base = bfd_get_section_vma (abfd, sect);
2058 *text_offs = text_addr - text_base;
2059 *data_offs = data_addr - data_base;
2060 *bss_offs = bss_addr - bss_base;
2065 sprintf (tmp, "VMA: text = 0x");
2066 sprintf_vma (tmp + strlen (tmp), text_addr);
2067 sprintf (tmp + strlen (tmp), " data = 0x");
2068 sprintf_vma (tmp + strlen (tmp), data_addr);
2069 sprintf (tmp + strlen (tmp), " bss = 0x");
2070 sprintf_vma (tmp + strlen (tmp), bss_addr);
2071 fprintf_filtered (gdb_stdlog, tmp);
2072 fprintf_filtered (gdb_stdlog,
2073 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2074 paddr_nz (*text_offs),
2075 paddr_nz (*data_offs),
2076 paddr_nz (*bss_offs));
2083 * Function: remote_cisco_objfile_relocate
2085 * Relocate the symbol file for a remote target.
2089 remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off,
2090 bfd_signed_vma bss_off)
2092 struct section_offsets *offs;
2094 if (text_off != 0 || data_off != 0 || bss_off != 0)
2096 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2097 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2098 simple canonical representation for this stuff. */
2100 offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
2101 memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
2103 offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off;
2104 offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off;
2105 offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off;
2107 /* First call the standard objfile_relocate. */
2108 objfile_relocate (symfile_objfile, offs);
2110 /* Now we need to fix up the section entries already attached to
2111 the exec target. These entries will control memory transfers
2112 from the exec file. */
2114 exec_set_section_offsets (text_off, data_off, bss_off);
2118 /* Stub for catch_errors. */
2121 remote_start_remote_dummy (struct ui_out *uiout, void *dummy)
2123 start_remote (); /* Initialize gdb process mechanisms */
2124 /* NOTE: Return something >=0. A -ve value is reserved for
2125 catch_exceptions. */
2130 remote_start_remote (struct ui_out *uiout, void *dummy)
2132 immediate_quit++; /* Allow user to interrupt it */
2134 /* Ack any packet which the remote side has already sent. */
2135 serial_write (remote_desc, "+", 1);
2137 /* Let the stub know that we want it to return the thread. */
2140 inferior_ptid = remote_current_thread (inferior_ptid);
2142 get_offsets (); /* Get text, data & bss offsets */
2144 putpkt ("?"); /* initiate a query from remote machine */
2147 /* NOTE: See comment above in remote_start_remote_dummy(). This
2148 function returns something >=0. */
2149 return remote_start_remote_dummy (uiout, dummy);
2152 /* Open a connection to a remote debugger.
2153 NAME is the filename used for communication. */
2156 remote_open (char *name, int from_tty)
2158 remote_open_1 (name, from_tty, &remote_ops, 0, 0);
2161 /* Just like remote_open, but with asynchronous support. */
2163 remote_async_open (char *name, int from_tty)
2165 remote_open_1 (name, from_tty, &remote_async_ops, 0, 1);
2168 /* Open a connection to a remote debugger using the extended
2169 remote gdb protocol. NAME is the filename used for communication. */
2172 extended_remote_open (char *name, int from_tty)
2174 remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */,
2178 /* Just like extended_remote_open, but with asynchronous support. */
2180 extended_remote_async_open (char *name, int from_tty)
2182 remote_open_1 (name, from_tty, &extended_async_remote_ops,
2183 1 /*extended_p */, 1 /* async_p */);
2186 /* Generic code for opening a connection to a remote target. */
2189 init_all_packet_configs (void)
2192 update_packet_config (&remote_protocol_e);
2193 update_packet_config (&remote_protocol_E);
2194 update_packet_config (&remote_protocol_P);
2195 update_packet_config (&remote_protocol_qSymbol);
2196 for (i = 0; i < NR_Z_PACKET_TYPES; i++)
2197 update_packet_config (&remote_protocol_Z[i]);
2198 /* Force remote_write_bytes to check whether target supports binary
2200 update_packet_config (&remote_protocol_binary_download);
2203 /* Symbol look-up. */
2206 remote_check_symbols (struct objfile *objfile)
2208 struct remote_state *rs = get_remote_state ();
2209 char *msg, *reply, *tmp;
2210 struct minimal_symbol *sym;
2213 if (remote_protocol_qSymbol.support == PACKET_DISABLE)
2216 msg = alloca (rs->remote_packet_size);
2217 reply = alloca (rs->remote_packet_size);
2219 /* Invite target to request symbol lookups. */
2221 putpkt ("qSymbol::");
2222 getpkt (reply, (rs->remote_packet_size), 0);
2223 packet_ok (reply, &remote_protocol_qSymbol);
2225 while (strncmp (reply, "qSymbol:", 8) == 0)
2228 end = hex2bin (tmp, msg, strlen (tmp) / 2);
2230 sym = lookup_minimal_symbol (msg, NULL, NULL);
2232 sprintf (msg, "qSymbol::%s", &reply[8]);
2234 sprintf (msg, "qSymbol:%s:%s",
2235 paddr_nz (SYMBOL_VALUE_ADDRESS (sym)),
2238 getpkt (reply, (rs->remote_packet_size), 0);
2242 static struct serial *
2243 remote_serial_open (char *name)
2245 static int udp_warning = 0;
2247 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2248 of in ser-tcp.c, because it is the remote protocol assuming that the
2249 serial connection is reliable and not the serial connection promising
2251 if (!udp_warning && strncmp (name, "udp:", 4) == 0)
2253 warning ("The remote protocol may be unreliable over UDP.");
2254 warning ("Some events may be lost, rendering further debugging "
2259 return serial_open (name);
2263 remote_open_1 (char *name, int from_tty, struct target_ops *target,
2264 int extended_p, int async_p)
2267 struct remote_state *rs = get_remote_state ();
2269 error ("To open a remote debug connection, you need to specify what\n"
2270 "serial device is attached to the remote system\n"
2271 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2273 /* See FIXME above */
2275 wait_forever_enabled_p = 1;
2277 target_preopen (from_tty);
2279 unpush_target (target);
2281 remote_desc = remote_serial_open (name);
2283 perror_with_name (name);
2285 if (baud_rate != -1)
2287 if (serial_setbaudrate (remote_desc, baud_rate))
2289 serial_close (remote_desc);
2290 perror_with_name (name);
2294 serial_raw (remote_desc);
2296 /* If there is something sitting in the buffer we might take it as a
2297 response to a command, which would be bad. */
2298 serial_flush_input (remote_desc);
2302 puts_filtered ("Remote debugging using ");
2303 puts_filtered (name);
2304 puts_filtered ("\n");
2306 push_target (target); /* Switch to using remote target now */
2308 init_all_packet_configs ();
2310 general_thread = -2;
2311 continue_thread = -2;
2313 /* Probe for ability to use "ThreadInfo" query, as required. */
2314 use_threadinfo_query = 1;
2315 use_threadextra_query = 1;
2317 /* Without this, some commands which require an active target (such
2318 as kill) won't work. This variable serves (at least) double duty
2319 as both the pid of the target process (if it has such), and as a
2320 flag indicating that a target is active. These functions should
2321 be split out into seperate variables, especially since GDB will
2322 someday have a notion of debugging several processes. */
2324 inferior_ptid = pid_to_ptid (MAGIC_NULL_PID);
2328 /* With this target we start out by owning the terminal. */
2329 remote_async_terminal_ours_p = 1;
2331 /* FIXME: cagney/1999-09-23: During the initial connection it is
2332 assumed that the target is already ready and able to respond to
2333 requests. Unfortunately remote_start_remote() eventually calls
2334 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2335 around this. Eventually a mechanism that allows
2336 wait_for_inferior() to expect/get timeouts will be
2338 wait_forever_enabled_p = 0;
2341 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2342 /* First delete any symbols previously loaded from shared libraries. */
2343 no_shared_libraries (NULL, 0);
2346 /* Start the remote connection. If error() or QUIT, discard this
2347 target (we'd otherwise be in an inconsistent state) and then
2348 propogate the error on up the exception chain. This ensures that
2349 the caller doesn't stumble along blindly assuming that the
2350 function succeeded. The CLI doesn't have this problem but other
2351 UI's, such as MI do.
2353 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2354 this function should return an error indication letting the
2355 caller restore the previous state. Unfortunatly the command
2356 ``target remote'' is directly wired to this function making that
2357 impossible. On a positive note, the CLI side of this problem has
2358 been fixed - the function set_cmd_context() makes it possible for
2359 all the ``target ....'' commands to share a common callback
2360 function. See cli-dump.c. */
2361 ex = catch_exceptions (uiout,
2362 remote_start_remote, NULL,
2363 "Couldn't establish connection to remote"
2370 wait_forever_enabled_p = 1;
2371 throw_exception (ex);
2375 wait_forever_enabled_p = 1;
2379 /* Tell the remote that we are using the extended protocol. */
2380 char *buf = alloca (rs->remote_packet_size);
2382 getpkt (buf, (rs->remote_packet_size), 0);
2384 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2385 /* FIXME: need a master target_open vector from which all
2386 remote_opens can be called, so that stuff like this can
2387 go there. Failing that, the following code must be copied
2388 to the open function for any remote target that wants to
2389 support svr4 shared libraries. */
2391 /* Set up to detect and load shared libraries. */
2392 if (exec_bfd) /* No use without an exec file. */
2394 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
2395 remote_check_symbols (symfile_objfile);
2400 /* This takes a program previously attached to and detaches it. After
2401 this is done, GDB can be used to debug some other program. We
2402 better not have left any breakpoints in the target program or it'll
2403 die when it hits one. */
2406 remote_detach (char *args, int from_tty)
2408 struct remote_state *rs = get_remote_state ();
2409 char *buf = alloca (rs->remote_packet_size);
2412 error ("Argument given to \"detach\" when remotely debugging.");
2414 /* Tell the remote target to detach. */
2416 remote_send (buf, (rs->remote_packet_size));
2418 target_mourn_inferior ();
2420 puts_filtered ("Ending remote debugging.\n");
2424 /* Same as remote_detach, but with async support. */
2426 remote_async_detach (char *args, int from_tty)
2428 struct remote_state *rs = get_remote_state ();
2429 char *buf = alloca (rs->remote_packet_size);
2432 error ("Argument given to \"detach\" when remotely debugging.");
2434 /* Tell the remote target to detach. */
2436 remote_send (buf, (rs->remote_packet_size));
2438 /* Unregister the file descriptor from the event loop. */
2439 if (target_is_async_p ())
2440 serial_async (remote_desc, NULL, 0);
2442 target_mourn_inferior ();
2444 puts_filtered ("Ending remote debugging.\n");
2447 /* Convert hex digit A to a number. */
2452 if (a >= '0' && a <= '9')
2454 else if (a >= 'a' && a <= 'f')
2455 return a - 'a' + 10;
2456 else if (a >= 'A' && a <= 'F')
2457 return a - 'A' + 10;
2459 error ("Reply contains invalid hex digit %d", a);
2463 hex2bin (const char *hex, char *bin, int count)
2467 for (i = 0; i < count; i++)
2469 if (hex[0] == 0 || hex[1] == 0)
2471 /* Hex string is short, or of uneven length.
2472 Return the count that has been converted so far. */
2475 *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]);
2481 /* Convert number NIB to a hex digit. */
2489 return 'a' + nib - 10;
2493 bin2hex (const char *bin, char *hex, int count)
2496 /* May use a length, or a nul-terminated string as input. */
2498 count = strlen (bin);
2500 for (i = 0; i < count; i++)
2502 *hex++ = tohex ((*bin >> 4) & 0xf);
2503 *hex++ = tohex (*bin++ & 0xf);
2509 /* Tell the remote machine to resume. */
2511 static enum target_signal last_sent_signal = TARGET_SIGNAL_0;
2513 static int last_sent_step;
2516 remote_resume (ptid_t ptid, int step, enum target_signal siggnal)
2518 struct remote_state *rs = get_remote_state ();
2519 char *buf = alloca (rs->remote_packet_size);
2520 int pid = PIDGET (ptid);
2524 set_thread (0, 0); /* run any thread */
2526 set_thread (pid, 0); /* run this thread */
2528 last_sent_signal = siggnal;
2529 last_sent_step = step;
2531 /* A hook for when we need to do something at the last moment before
2533 if (target_resume_hook)
2534 (*target_resume_hook) ();
2537 /* The s/S/c/C packets do not return status. So if the target does
2538 not support the S or C packets, the debug agent returns an empty
2539 string which is detected in remote_wait(). This protocol defect
2540 is fixed in the e/E packets. */
2542 if (step && step_range_end)
2544 /* If the target does not support the 'E' packet, we try the 'S'
2545 packet. Ideally we would fall back to the 'e' packet if that
2546 too is not supported. But that would require another copy of
2547 the code to issue the 'e' packet (and fall back to 's' if not
2548 supported) in remote_wait(). */
2550 if (siggnal != TARGET_SIGNAL_0)
2552 if (remote_protocol_E.support != PACKET_DISABLE)
2556 *p++ = tohex (((int) siggnal >> 4) & 0xf);
2557 *p++ = tohex (((int) siggnal) & 0xf);
2559 p += hexnumstr (p, (ULONGEST) step_range_start);
2561 p += hexnumstr (p, (ULONGEST) step_range_end);
2565 getpkt (buf, (rs->remote_packet_size), 0);
2567 if (packet_ok (buf, &remote_protocol_E) == PACKET_OK)
2573 if (remote_protocol_e.support != PACKET_DISABLE)
2577 p += hexnumstr (p, (ULONGEST) step_range_start);
2579 p += hexnumstr (p, (ULONGEST) step_range_end);
2583 getpkt (buf, (rs->remote_packet_size), 0);
2585 if (packet_ok (buf, &remote_protocol_e) == PACKET_OK)
2591 if (siggnal != TARGET_SIGNAL_0)
2593 buf[0] = step ? 'S' : 'C';
2594 buf[1] = tohex (((int) siggnal >> 4) & 0xf);
2595 buf[2] = tohex (((int) siggnal) & 0xf);
2599 strcpy (buf, step ? "s" : "c");
2604 /* Same as remote_resume, but with async support. */
2606 remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal)
2608 struct remote_state *rs = get_remote_state ();
2609 char *buf = alloca (rs->remote_packet_size);
2610 int pid = PIDGET (ptid);
2614 set_thread (0, 0); /* run any thread */
2616 set_thread (pid, 0); /* run this thread */
2618 last_sent_signal = siggnal;
2619 last_sent_step = step;
2621 /* A hook for when we need to do something at the last moment before
2623 if (target_resume_hook)
2624 (*target_resume_hook) ();
2626 /* The s/S/c/C packets do not return status. So if the target does
2627 not support the S or C packets, the debug agent returns an empty
2628 string which is detected in remote_wait(). This protocol defect
2629 is fixed in the e/E packets. */
2631 if (step && step_range_end)
2633 /* If the target does not support the 'E' packet, we try the 'S'
2634 packet. Ideally we would fall back to the 'e' packet if that
2635 too is not supported. But that would require another copy of
2636 the code to issue the 'e' packet (and fall back to 's' if not
2637 supported) in remote_wait(). */
2639 if (siggnal != TARGET_SIGNAL_0)
2641 if (remote_protocol_E.support != PACKET_DISABLE)
2645 *p++ = tohex (((int) siggnal >> 4) & 0xf);
2646 *p++ = tohex (((int) siggnal) & 0xf);
2648 p += hexnumstr (p, (ULONGEST) step_range_start);
2650 p += hexnumstr (p, (ULONGEST) step_range_end);
2654 getpkt (buf, (rs->remote_packet_size), 0);
2656 if (packet_ok (buf, &remote_protocol_E) == PACKET_OK)
2657 goto register_event_loop;
2662 if (remote_protocol_e.support != PACKET_DISABLE)
2666 p += hexnumstr (p, (ULONGEST) step_range_start);
2668 p += hexnumstr (p, (ULONGEST) step_range_end);
2672 getpkt (buf, (rs->remote_packet_size), 0);
2674 if (packet_ok (buf, &remote_protocol_e) == PACKET_OK)
2675 goto register_event_loop;
2680 if (siggnal != TARGET_SIGNAL_0)
2682 buf[0] = step ? 'S' : 'C';
2683 buf[1] = tohex (((int) siggnal >> 4) & 0xf);
2684 buf[2] = tohex ((int) siggnal & 0xf);
2688 strcpy (buf, step ? "s" : "c");
2692 register_event_loop:
2693 /* We are about to start executing the inferior, let's register it
2694 with the event loop. NOTE: this is the one place where all the
2695 execution commands end up. We could alternatively do this in each
2696 of the execution commands in infcmd.c.*/
2697 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2698 into infcmd.c in order to allow inferior function calls to work
2699 NOT asynchronously. */
2700 if (event_loop_p && target_can_async_p ())
2701 target_async (inferior_event_handler, 0);
2702 /* Tell the world that the target is now executing. */
2703 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2704 this? Instead, should the client of target just assume (for
2705 async targets) that the target is going to start executing? Is
2706 this information already found in the continuation block? */
2707 if (target_is_async_p ())
2708 target_executing = 1;
2712 /* Set up the signal handler for SIGINT, while the target is
2713 executing, ovewriting the 'regular' SIGINT signal handler. */
2715 initialize_sigint_signal_handler (void)
2717 sigint_remote_token =
2718 create_async_signal_handler (async_remote_interrupt, NULL);
2719 signal (SIGINT, handle_remote_sigint);
2722 /* Signal handler for SIGINT, while the target is executing. */
2724 handle_remote_sigint (int sig)
2726 signal (sig, handle_remote_sigint_twice);
2727 sigint_remote_twice_token =
2728 create_async_signal_handler (async_remote_interrupt_twice, NULL);
2729 mark_async_signal_handler_wrapper (sigint_remote_token);
2732 /* Signal handler for SIGINT, installed after SIGINT has already been
2733 sent once. It will take effect the second time that the user sends
2736 handle_remote_sigint_twice (int sig)
2738 signal (sig, handle_sigint);
2739 sigint_remote_twice_token =
2740 create_async_signal_handler (inferior_event_handler_wrapper, NULL);
2741 mark_async_signal_handler_wrapper (sigint_remote_twice_token);
2744 /* Perform the real interruption of the target execution, in response
2747 async_remote_interrupt (gdb_client_data arg)
2750 fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n");
2755 /* Perform interrupt, if the first attempt did not succeed. Just give
2756 up on the target alltogether. */
2758 async_remote_interrupt_twice (gdb_client_data arg)
2761 fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n");
2762 /* Do something only if the target was not killed by the previous
2764 if (target_executing)
2767 signal (SIGINT, handle_remote_sigint);
2771 /* Reinstall the usual SIGINT handlers, after the target has
2774 cleanup_sigint_signal_handler (void *dummy)
2776 signal (SIGINT, handle_sigint);
2777 if (sigint_remote_twice_token)
2778 delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token);
2779 if (sigint_remote_token)
2780 delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token);
2783 /* Send ^C to target to halt it. Target will respond, and send us a
2785 static void (*ofunc) (int);
2787 /* The command line interface's stop routine. This function is installed
2788 as a signal handler for SIGINT. The first time a user requests a
2789 stop, we call remote_stop to send a break or ^C. If there is no
2790 response from the target (it didn't stop when the user requested it),
2791 we ask the user if he'd like to detach from the target. */
2793 remote_interrupt (int signo)
2795 /* If this doesn't work, try more severe steps. */
2796 signal (signo, remote_interrupt_twice);
2799 fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n");
2804 /* The user typed ^C twice. */
2807 remote_interrupt_twice (int signo)
2809 signal (signo, ofunc);
2811 signal (signo, remote_interrupt);
2814 /* This is the generic stop called via the target vector. When a target
2815 interrupt is requested, either by the command line or the GUI, we
2816 will eventually end up here. */
2820 /* Send a break or a ^C, depending on user preference. */
2822 fprintf_unfiltered (gdb_stdlog, "remote_stop called\n");
2825 serial_send_break (remote_desc);
2827 serial_write (remote_desc, "\003", 1);
2830 /* Ask the user what to do when an interrupt is received. */
2833 interrupt_query (void)
2835 target_terminal_ours ();
2837 if (query ("Interrupted while waiting for the program.\n\
2838 Give up (and stop debugging it)? "))
2840 target_mourn_inferior ();
2841 throw_exception (RETURN_QUIT);
2844 target_terminal_inferior ();
2847 /* Enable/disable target terminal ownership. Most targets can use
2848 terminal groups to control terminal ownership. Remote targets are
2849 different in that explicit transfer of ownership to/from GDB/target
2853 remote_async_terminal_inferior (void)
2855 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2856 sync_execution here. This function should only be called when
2857 GDB is resuming the inferior in the forground. A background
2858 resume (``run&'') should leave GDB in control of the terminal and
2859 consequently should not call this code. */
2860 if (!sync_execution)
2862 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2863 calls target_terminal_*() idenpotent. The event-loop GDB talking
2864 to an asynchronous target with a synchronous command calls this
2865 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2866 stops trying to transfer the terminal to the target when it
2867 shouldn't this guard can go away. */
2868 if (!remote_async_terminal_ours_p)
2870 delete_file_handler (input_fd);
2871 remote_async_terminal_ours_p = 0;
2872 initialize_sigint_signal_handler ();
2873 /* NOTE: At this point we could also register our selves as the
2874 recipient of all input. Any characters typed could then be
2875 passed on down to the target. */
2879 remote_async_terminal_ours (void)
2881 /* See FIXME in remote_async_terminal_inferior. */
2882 if (!sync_execution)
2884 /* See FIXME in remote_async_terminal_inferior. */
2885 if (remote_async_terminal_ours_p)
2887 cleanup_sigint_signal_handler (NULL);
2888 add_file_handler (input_fd, stdin_event_handler, 0);
2889 remote_async_terminal_ours_p = 1;
2892 /* If nonzero, ignore the next kill. */
2897 remote_console_output (char *msg)
2901 for (p = msg; p[0] && p[1]; p += 2)
2904 char c = fromhex (p[0]) * 16 + fromhex (p[1]);
2907 fputs_unfiltered (tb, gdb_stdtarg);
2909 gdb_flush (gdb_stdtarg);
2912 /* Wait until the remote machine stops, then return,
2913 storing status in STATUS just as `wait' would.
2914 Returns "pid", which in the case of a multi-threaded
2915 remote OS, is the thread-id. */
2918 remote_wait (ptid_t ptid, struct target_waitstatus *status)
2920 struct remote_state *rs = get_remote_state ();
2921 unsigned char *buf = alloca (rs->remote_packet_size);
2922 ULONGEST thread_num = -1;
2925 status->kind = TARGET_WAITKIND_EXITED;
2926 status->value.integer = 0;
2932 ofunc = signal (SIGINT, remote_interrupt);
2933 getpkt (buf, (rs->remote_packet_size), 1);
2934 signal (SIGINT, ofunc);
2936 /* This is a hook for when we need to do something (perhaps the
2937 collection of trace data) every time the target stops. */
2938 if (target_wait_loop_hook)
2939 (*target_wait_loop_hook) ();
2941 remote_stopped_by_watchpoint_p = 0;
2945 case 'E': /* Error of some sort */
2946 warning ("Remote failure reply: %s", buf);
2948 case 'T': /* Status with PC, SP, FP, ... */
2951 char regs[MAX_REGISTER_SIZE];
2953 /* Expedited reply, containing Signal, {regno, reg} repeat */
2954 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2956 n... = register number
2957 r... = register contents
2959 p = &buf[3]; /* after Txx */
2968 /* If the packet contains a register number save it in pnum
2969 and set p1 to point to the character following it.
2970 Otherwise p1 points to p. */
2972 /* If this packet is an awatch packet, don't parse the 'a'
2973 as a register number. */
2975 if (strncmp (p, "awatch", strlen("awatch")) != 0)
2977 /* Read the ``P'' register number. */
2978 pnum = strtol (p, &p_temp, 16);
2979 p1 = (unsigned char *) p_temp;
2984 if (p1 == p) /* No register number present here */
2986 p1 = (unsigned char *) strchr (p, ':');
2988 warning ("Malformed packet(a) (missing colon): %s\n\
2991 if (strncmp (p, "thread", p1 - p) == 0)
2993 p_temp = unpack_varlen_hex (++p1, &thread_num);
2994 record_currthread (thread_num);
2995 p = (unsigned char *) p_temp;
2997 else if ((strncmp (p, "watch", p1 - p) == 0)
2998 || (strncmp (p, "rwatch", p1 - p) == 0)
2999 || (strncmp (p, "awatch", p1 - p) == 0))
3001 remote_stopped_by_watchpoint_p = 1;
3002 p = unpack_varlen_hex (++p1, &addr);
3003 remote_watch_data_address = (CORE_ADDR)addr;
3007 /* Silently skip unknown optional info. */
3008 p_temp = strchr (p1 + 1, ';');
3010 p = (unsigned char *) p_temp;
3015 struct packet_reg *reg = packet_reg_from_pnum (rs, pnum);
3019 warning ("Malformed packet(b) (missing colon): %s\n\
3024 warning ("Remote sent bad register number %s: %s\n\
3026 phex_nz (pnum, 0), p, buf);
3028 fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum));
3030 if (fieldsize < REGISTER_RAW_SIZE (reg->regnum))
3031 warning ("Remote reply is too short: %s", buf);
3032 supply_register (reg->regnum, regs);
3037 warning ("Remote register badly formatted: %s", buf);
3038 warning (" here: %s", p);
3043 case 'S': /* Old style status, just signal only */
3044 status->kind = TARGET_WAITKIND_STOPPED;
3045 status->value.sig = (enum target_signal)
3046 (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
3050 /* Export Cisco kernel mode as a convenience variable
3051 (so that it can be used in the GDB prompt if desired). */
3053 if (cisco_kernel_mode == 1)
3054 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3055 value_from_string ("PDEBUG-"));
3056 cisco_kernel_mode = 0;
3057 thread_num = strtol ((const char *) &buf[4], NULL, 16);
3058 record_currthread (thread_num);
3060 else if (buf[3] == 'k')
3062 /* Export Cisco kernel mode as a convenience variable
3063 (so that it can be used in the GDB prompt if desired). */
3065 if (cisco_kernel_mode == 1)
3066 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3067 value_from_string ("KDEBUG-"));
3068 cisco_kernel_mode = 1;
3071 case 'N': /* Cisco special: status and offsets */
3073 bfd_vma text_addr, data_addr, bss_addr;
3074 bfd_signed_vma text_off, data_off, bss_off;
3077 status->kind = TARGET_WAITKIND_STOPPED;
3078 status->value.sig = (enum target_signal)
3079 (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
3081 if (symfile_objfile == NULL)
3083 warning ("Relocation packet received with no symbol file. \
3088 /* Relocate object file. Buffer format is NAATT;DD;BB
3089 * where AA is the signal number, TT is the new text
3090 * address, DD * is the new data address, and BB is the
3091 * new bss address. */
3094 text_addr = strtoul (p, (char **) &p1, 16);
3095 if (p1 == p || *p1 != ';')
3096 warning ("Malformed relocation packet: Packet '%s'", buf);
3098 data_addr = strtoul (p, (char **) &p1, 16);
3099 if (p1 == p || *p1 != ';')
3100 warning ("Malformed relocation packet: Packet '%s'", buf);
3102 bss_addr = strtoul (p, (char **) &p1, 16);
3104 warning ("Malformed relocation packet: Packet '%s'", buf);
3106 if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr,
3107 &text_off, &data_off, &bss_off)
3109 if (text_off != 0 || data_off != 0 || bss_off != 0)
3110 remote_cisco_objfile_relocate (text_off, data_off, bss_off);
3114 case 'W': /* Target exited */
3116 /* The remote process exited. */
3117 status->kind = TARGET_WAITKIND_EXITED;
3118 status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]);
3122 status->kind = TARGET_WAITKIND_SIGNALLED;
3123 status->value.sig = (enum target_signal)
3124 (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
3128 case 'O': /* Console output */
3129 remote_console_output (buf + 1);
3132 if (last_sent_signal != TARGET_SIGNAL_0)
3134 /* Zero length reply means that we tried 'S' or 'C' and
3135 the remote system doesn't support it. */
3136 target_terminal_ours_for_output ();
3138 ("Can't send signals to this remote system. %s not sent.\n",
3139 target_signal_to_name (last_sent_signal));
3140 last_sent_signal = TARGET_SIGNAL_0;
3141 target_terminal_inferior ();
3143 strcpy ((char *) buf, last_sent_step ? "s" : "c");
3144 putpkt ((char *) buf);
3147 /* else fallthrough */
3149 warning ("Invalid remote reply: %s", buf);
3154 if (thread_num != -1)
3156 return pid_to_ptid (thread_num);
3158 return inferior_ptid;
3161 /* Async version of remote_wait. */
3163 remote_async_wait (ptid_t ptid, struct target_waitstatus *status)
3165 struct remote_state *rs = get_remote_state ();
3166 unsigned char *buf = alloca (rs->remote_packet_size);
3167 ULONGEST thread_num = -1;
3170 status->kind = TARGET_WAITKIND_EXITED;
3171 status->value.integer = 0;
3173 remote_stopped_by_watchpoint_p = 0;
3179 if (!target_is_async_p ())
3180 ofunc = signal (SIGINT, remote_interrupt);
3181 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3182 _never_ wait for ever -> test on target_is_async_p().
3183 However, before we do that we need to ensure that the caller
3184 knows how to take the target into/out of async mode. */
3185 getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p);
3186 if (!target_is_async_p ())
3187 signal (SIGINT, ofunc);
3189 /* This is a hook for when we need to do something (perhaps the
3190 collection of trace data) every time the target stops. */
3191 if (target_wait_loop_hook)
3192 (*target_wait_loop_hook) ();
3196 case 'E': /* Error of some sort */
3197 warning ("Remote failure reply: %s", buf);
3199 case 'T': /* Status with PC, SP, FP, ... */
3202 char regs[MAX_REGISTER_SIZE];
3204 /* Expedited reply, containing Signal, {regno, reg} repeat */
3205 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3207 n... = register number
3208 r... = register contents
3210 p = &buf[3]; /* after Txx */
3219 /* If the packet contains a register number, save it in pnum
3220 and set p1 to point to the character following it.
3221 Otherwise p1 points to p. */
3223 /* If this packet is an awatch packet, don't parse the 'a'
3224 as a register number. */
3226 if (!strncmp (p, "awatch", strlen ("awatch")) != 0)
3228 /* Read the register number. */
3229 pnum = strtol (p, &p_temp, 16);
3230 p1 = (unsigned char *) p_temp;
3235 if (p1 == p) /* No register number present here */
3237 p1 = (unsigned char *) strchr (p, ':');
3239 warning ("Malformed packet(a) (missing colon): %s\n\
3242 if (strncmp (p, "thread", p1 - p) == 0)
3244 p_temp = unpack_varlen_hex (++p1, &thread_num);
3245 record_currthread (thread_num);
3246 p = (unsigned char *) p_temp;
3248 else if ((strncmp (p, "watch", p1 - p) == 0)
3249 || (strncmp (p, "rwatch", p1 - p) == 0)
3250 || (strncmp (p, "awatch", p1 - p) == 0))
3252 remote_stopped_by_watchpoint_p = 1;
3253 p = unpack_varlen_hex (++p1, &addr);
3254 remote_watch_data_address = (CORE_ADDR)addr;
3258 /* Silently skip unknown optional info. */
3259 p_temp = (unsigned char *) strchr (p1 + 1, ';');
3267 struct packet_reg *reg = packet_reg_from_pnum (rs, pnum);
3270 warning ("Malformed packet(b) (missing colon): %s\n\
3275 warning ("Remote sent bad register number %ld: %s\n\
3279 fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum));
3281 if (fieldsize < REGISTER_RAW_SIZE (reg->regnum))
3282 warning ("Remote reply is too short: %s", buf);
3283 supply_register (reg->regnum, regs);
3288 warning ("Remote register badly formatted: %s", buf);
3289 warning (" here: %s", p);
3294 case 'S': /* Old style status, just signal only */
3295 status->kind = TARGET_WAITKIND_STOPPED;
3296 status->value.sig = (enum target_signal)
3297 (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
3301 /* Export Cisco kernel mode as a convenience variable
3302 (so that it can be used in the GDB prompt if desired). */
3304 if (cisco_kernel_mode == 1)
3305 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3306 value_from_string ("PDEBUG-"));
3307 cisco_kernel_mode = 0;
3308 thread_num = strtol ((const char *) &buf[4], NULL, 16);
3309 record_currthread (thread_num);
3311 else if (buf[3] == 'k')
3313 /* Export Cisco kernel mode as a convenience variable
3314 (so that it can be used in the GDB prompt if desired). */
3316 if (cisco_kernel_mode == 1)
3317 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3318 value_from_string ("KDEBUG-"));
3319 cisco_kernel_mode = 1;
3322 case 'N': /* Cisco special: status and offsets */
3324 bfd_vma text_addr, data_addr, bss_addr;
3325 bfd_signed_vma text_off, data_off, bss_off;
3328 status->kind = TARGET_WAITKIND_STOPPED;
3329 status->value.sig = (enum target_signal)
3330 (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
3332 if (symfile_objfile == NULL)
3334 warning ("Relocation packet recieved with no symbol file. \
3339 /* Relocate object file. Buffer format is NAATT;DD;BB
3340 * where AA is the signal number, TT is the new text
3341 * address, DD * is the new data address, and BB is the
3342 * new bss address. */
3345 text_addr = strtoul (p, (char **) &p1, 16);
3346 if (p1 == p || *p1 != ';')
3347 warning ("Malformed relocation packet: Packet '%s'", buf);
3349 data_addr = strtoul (p, (char **) &p1, 16);
3350 if (p1 == p || *p1 != ';')
3351 warning ("Malformed relocation packet: Packet '%s'", buf);
3353 bss_addr = strtoul (p, (char **) &p1, 16);
3355 warning ("Malformed relocation packet: Packet '%s'", buf);
3357 if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr,
3358 &text_off, &data_off, &bss_off)
3360 if (text_off != 0 || data_off != 0 || bss_off != 0)
3361 remote_cisco_objfile_relocate (text_off, data_off, bss_off);
3365 case 'W': /* Target exited */
3367 /* The remote process exited. */
3368 status->kind = TARGET_WAITKIND_EXITED;
3369 status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]);
3373 status->kind = TARGET_WAITKIND_SIGNALLED;
3374 status->value.sig = (enum target_signal)
3375 (((fromhex (buf[1])) << 4) + (fromhex (buf[2])));
3379 case 'O': /* Console output */
3380 remote_console_output (buf + 1);
3381 /* Return immediately to the event loop. The event loop will
3382 still be waiting on the inferior afterwards. */
3383 status->kind = TARGET_WAITKIND_IGNORE;
3386 if (last_sent_signal != TARGET_SIGNAL_0)
3388 /* Zero length reply means that we tried 'S' or 'C' and
3389 the remote system doesn't support it. */
3390 target_terminal_ours_for_output ();
3392 ("Can't send signals to this remote system. %s not sent.\n",
3393 target_signal_to_name (last_sent_signal));
3394 last_sent_signal = TARGET_SIGNAL_0;
3395 target_terminal_inferior ();
3397 strcpy ((char *) buf, last_sent_step ? "s" : "c");
3398 putpkt ((char *) buf);
3401 /* else fallthrough */
3403 warning ("Invalid remote reply: %s", buf);
3408 if (thread_num != -1)
3410 return pid_to_ptid (thread_num);
3412 return inferior_ptid;
3415 /* Number of bytes of registers this stub implements. */
3417 static int register_bytes_found;
3419 /* Read the remote registers into the block REGS. */
3420 /* Currently we just read all the registers, so we don't use regnum. */
3424 remote_fetch_registers (int regnum)
3426 struct remote_state *rs = get_remote_state ();
3427 char *buf = alloca (rs->remote_packet_size);
3430 char *regs = alloca (rs->sizeof_g_packet);
3432 set_thread (PIDGET (inferior_ptid), 1);
3436 struct packet_reg *reg = packet_reg_from_regnum (rs, regnum);
3437 gdb_assert (reg != NULL);
3438 if (!reg->in_g_packet)
3439 internal_error (__FILE__, __LINE__,
3440 "Attempt to fetch a non G-packet register when this "
3441 "remote.c does not support the p-packet.");
3445 remote_send (buf, (rs->remote_packet_size));
3447 /* Save the size of the packet sent to us by the target. Its used
3448 as a heuristic when determining the max size of packets that the
3449 target can safely receive. */
3450 if ((rs->actual_register_packet_size) == 0)
3451 (rs->actual_register_packet_size) = strlen (buf);
3453 /* Unimplemented registers read as all bits zero. */
3454 memset (regs, 0, rs->sizeof_g_packet);
3456 /* We can get out of synch in various cases. If the first character
3457 in the buffer is not a hex character, assume that has happened
3458 and try to fetch another packet to read. */
3459 while ((buf[0] < '0' || buf[0] > '9')
3460 && (buf[0] < 'a' || buf[0] > 'f')
3461 && buf[0] != 'x') /* New: unavailable register value */
3464 fprintf_unfiltered (gdb_stdlog,
3465 "Bad register packet; fetching a new packet\n");
3466 getpkt (buf, (rs->remote_packet_size), 0);
3469 /* Reply describes registers byte by byte, each byte encoded as two
3470 hex characters. Suck them all up, then supply them to the
3471 register cacheing/storage mechanism. */
3474 for (i = 0; i < rs->sizeof_g_packet; i++)
3480 warning ("Remote reply is of odd length: %s", buf);
3481 /* Don't change register_bytes_found in this case, and don't
3482 print a second warning. */
3485 if (p[0] == 'x' && p[1] == 'x')
3486 regs[i] = 0; /* 'x' */
3488 regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]);
3492 if (i != register_bytes_found)
3494 register_bytes_found = i;
3495 if (REGISTER_BYTES_OK_P ()
3496 && !REGISTER_BYTES_OK (i))
3497 warning ("Remote reply is too short: %s", buf);
3503 for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
3505 struct packet_reg *r = &rs->regs[i];
3508 supply_register (r->regnum, regs + r->offset);
3509 if (buf[r->offset * 2] == 'x')
3510 set_register_cached (i, -1);
3516 /* Prepare to store registers. Since we may send them all (using a
3517 'G' request), we have to read out the ones we don't want to change
3521 remote_prepare_to_store (void)
3523 /* Make sure the entire registers array is valid. */
3524 switch (remote_protocol_P.support)
3526 case PACKET_DISABLE:
3527 case PACKET_SUPPORT_UNKNOWN:
3528 /* NOTE: This isn't rs->sizeof_g_packet because here, we are
3529 forcing the register cache to read its and not the target
3531 deprecated_read_register_bytes (0, (char *) NULL,
3532 DEPRECATED_REGISTER_BYTES); /* OK */
3539 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3540 packet was not recognized. */
3543 store_register_using_P (int regnum)
3545 struct remote_state *rs = get_remote_state ();
3546 struct packet_reg *reg = packet_reg_from_regnum (rs, regnum);
3547 /* Try storing a single register. */
3548 char *buf = alloca (rs->remote_packet_size);
3549 char regp[MAX_REGISTER_SIZE];
3553 sprintf (buf, "P%s=", phex_nz (reg->pnum, 0));
3554 p = buf + strlen (buf);
3555 regcache_collect (reg->regnum, regp);
3556 bin2hex (regp, p, REGISTER_RAW_SIZE (reg->regnum));
3557 remote_send (buf, rs->remote_packet_size);
3559 return buf[0] != '\0';
3563 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3564 of the register cache buffer. FIXME: ignores errors. */
3567 remote_store_registers (int regnum)
3569 struct remote_state *rs = get_remote_state ();
3575 set_thread (PIDGET (inferior_ptid), 1);
3579 switch (remote_protocol_P.support)
3581 case PACKET_DISABLE:
3584 if (store_register_using_P (regnum))
3587 error ("Protocol error: P packet not recognized by stub");
3588 case PACKET_SUPPORT_UNKNOWN:
3589 if (store_register_using_P (regnum))
3591 /* The stub recognized the 'P' packet. Remember this. */
3592 remote_protocol_P.support = PACKET_ENABLE;
3597 /* The stub does not support the 'P' packet. Use 'G'
3598 instead, and don't try using 'P' in the future (it
3599 will just waste our time). */
3600 remote_protocol_P.support = PACKET_DISABLE;
3606 /* Extract all the registers in the regcache copying them into a
3610 regs = alloca (rs->sizeof_g_packet);
3611 memset (regs, rs->sizeof_g_packet, 0);
3612 for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
3614 struct packet_reg *r = &rs->regs[i];
3616 regcache_collect (r->regnum, regs + r->offset);
3620 /* Command describes registers byte by byte,
3621 each byte encoded as two hex characters. */
3622 buf = alloca (rs->remote_packet_size);
3625 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3626 bin2hex (regs, p, register_bytes_found);
3627 remote_send (buf, (rs->remote_packet_size));
3631 /* Return the number of hex digits in num. */
3634 hexnumlen (ULONGEST num)
3638 for (i = 0; num != 0; i++)
3644 /* Set BUF to the minimum number of hex digits representing NUM. */
3647 hexnumstr (char *buf, ULONGEST num)
3649 int len = hexnumlen (num);
3650 return hexnumnstr (buf, num, len);
3654 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3657 hexnumnstr (char *buf, ULONGEST num, int width)
3663 for (i = width - 1; i >= 0; i--)
3665 buf[i] = "0123456789abcdef"[(num & 0xf)];
3672 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3675 remote_address_masked (CORE_ADDR addr)
3677 if (remote_address_size > 0
3678 && remote_address_size < (sizeof (ULONGEST) * 8))
3680 /* Only create a mask when that mask can safely be constructed
3681 in a ULONGEST variable. */
3683 mask = (mask << remote_address_size) - 1;
3689 /* Determine whether the remote target supports binary downloading.
3690 This is accomplished by sending a no-op memory write of zero length
3691 to the target at the specified address. It does not suffice to send
3692 the whole packet, since many stubs strip the eighth bit and subsequently
3693 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3695 NOTE: This can still lose if the serial line is not eight-bit
3696 clean. In cases like this, the user should clear "remote
3700 check_binary_download (CORE_ADDR addr)
3702 struct remote_state *rs = get_remote_state ();
3703 switch (remote_protocol_binary_download.support)
3705 case PACKET_DISABLE:
3709 case PACKET_SUPPORT_UNKNOWN:
3711 char *buf = alloca (rs->remote_packet_size);
3716 p += hexnumstr (p, (ULONGEST) addr);
3718 p += hexnumstr (p, (ULONGEST) 0);
3722 putpkt_binary (buf, (int) (p - buf));
3723 getpkt (buf, (rs->remote_packet_size), 0);
3728 fprintf_unfiltered (gdb_stdlog,
3729 "binary downloading NOT suppported by target\n");
3730 remote_protocol_binary_download.support = PACKET_DISABLE;
3735 fprintf_unfiltered (gdb_stdlog,
3736 "binary downloading suppported by target\n");
3737 remote_protocol_binary_download.support = PACKET_ENABLE;
3744 /* Write memory data directly to the remote machine.
3745 This does not inform the data cache; the data cache uses this.
3746 MEMADDR is the address in the remote memory space.
3747 MYADDR is the address of the buffer in our space.
3748 LEN is the number of bytes.
3750 Returns number of bytes transferred, or 0 (setting errno) for
3751 error. Only transfer a single packet. */
3754 remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len)
3757 int max_buf_size; /* Max size of packet output buffer */
3759 unsigned char *plen;
3765 /* Verify that the target can support a binary download */
3766 check_binary_download (memaddr);
3768 /* Determine the max packet size. */
3769 max_buf_size = get_memory_write_packet_size ();
3770 sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */
3771 buf = alloca (sizeof_buf);
3773 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3774 max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4;
3776 /* construct "M"<memaddr>","<len>":" */
3777 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3780 /* Append [XM]. Compute a best guess of the number of bytes
3781 actually transfered. */
3782 switch (remote_protocol_binary_download.support)
3786 /* Best guess at number of bytes that will fit. */
3787 todo = min (len, max_buf_size);
3789 case PACKET_DISABLE:
3791 /* num bytes that will fit */
3792 todo = min (len, max_buf_size / 2);
3794 case PACKET_SUPPORT_UNKNOWN:
3795 internal_error (__FILE__, __LINE__,
3796 "remote_write_bytes: bad internal state");
3798 internal_error (__FILE__, __LINE__, "bad switch");
3801 /* Append <memaddr> */
3802 memaddr = remote_address_masked (memaddr);
3803 p += hexnumstr (p, (ULONGEST) memaddr);
3806 /* Append <len>. Retain the location/size of <len>. It may
3807 need to be adjusted once the packet body has been created. */
3809 plenlen = hexnumstr (p, (ULONGEST) todo);
3814 /* Append the packet body. */
3815 switch (remote_protocol_binary_download.support)
3818 /* Binary mode. Send target system values byte by byte, in
3819 increasing byte addresses. Only escape certain critical
3822 (nr_bytes < todo) && (p - buf) < (max_buf_size - 2);
3825 switch (myaddr[nr_bytes] & 0xff)
3830 /* These must be escaped */
3832 *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20;
3835 *p++ = myaddr[nr_bytes] & 0xff;
3839 if (nr_bytes < todo)
3841 /* Escape chars have filled up the buffer prematurely,
3842 and we have actually sent fewer bytes than planned.
3843 Fix-up the length field of the packet. Use the same
3844 number of characters as before. */
3846 plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen);
3847 *plen = ':'; /* overwrite \0 from hexnumnstr() */
3850 case PACKET_DISABLE:
3851 /* Normal mode: Send target system values byte by byte, in
3852 increasing byte addresses. Each byte is encoded as a two hex
3854 nr_bytes = bin2hex (myaddr, p, todo);
3857 case PACKET_SUPPORT_UNKNOWN:
3858 internal_error (__FILE__, __LINE__,
3859 "remote_write_bytes: bad internal state");
3861 internal_error (__FILE__, __LINE__, "bad switch");
3864 putpkt_binary (buf, (int) (p - buf));
3865 getpkt (buf, sizeof_buf, 0);
3869 /* There is no correspondance between what the remote protocol
3870 uses for errors and errno codes. We would like a cleaner way
3871 of representing errors (big enough to include errno codes,
3872 bfd_error codes, and others). But for now just return EIO. */
3877 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3878 bytes than we'd planned. */
3882 /* Read memory data directly from the remote machine.
3883 This does not use the data cache; the data cache uses this.
3884 MEMADDR is the address in the remote memory space.
3885 MYADDR is the address of the buffer in our space.
3886 LEN is the number of bytes.
3888 Returns number of bytes transferred, or 0 for error. */
3890 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3891 remote targets) shouldn't attempt to read the entire buffer.
3892 Instead it should read a single packet worth of data and then
3893 return the byte size of that packet to the caller. The caller (its
3894 caller and its callers caller ;-) already contains code for
3895 handling partial reads. */
3898 remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len)
3901 int max_buf_size; /* Max size of packet output buffer */
3905 /* Create a buffer big enough for this packet. */
3906 max_buf_size = get_memory_read_packet_size ();
3907 sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */
3908 buf = alloca (sizeof_buf);
3917 todo = min (len, max_buf_size / 2); /* num bytes that will fit */
3919 /* construct "m"<memaddr>","<len>" */
3920 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3921 memaddr = remote_address_masked (memaddr);
3924 p += hexnumstr (p, (ULONGEST) memaddr);
3926 p += hexnumstr (p, (ULONGEST) todo);
3930 getpkt (buf, sizeof_buf, 0);
3933 && isxdigit (buf[1]) && isxdigit (buf[2])
3936 /* There is no correspondance between what the remote protocol uses
3937 for errors and errno codes. We would like a cleaner way of
3938 representing errors (big enough to include errno codes, bfd_error
3939 codes, and others). But for now just return EIO. */
3944 /* Reply describes memory byte by byte,
3945 each byte encoded as two hex characters. */
3948 if ((i = hex2bin (p, myaddr, todo)) < todo)
3950 /* Reply is short. This means that we were able to read
3951 only part of what we wanted to. */
3952 return i + (origlen - len);
3961 /* Read or write LEN bytes from inferior memory at MEMADDR,
3962 transferring to or from debugger address BUFFER. Write to inferior if
3963 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3964 for error. TARGET is unused. */
3968 remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len,
3969 int should_write, struct mem_attrib *attrib,
3970 struct target_ops *target)
3972 CORE_ADDR targ_addr;
3976 /* Should this be the selected frame? */
3977 gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache,
3979 &targ_addr, &targ_len);
3984 res = remote_write_bytes (targ_addr, buffer, targ_len);
3986 res = remote_read_bytes (targ_addr, buffer, targ_len);
3993 /* Enable after 4.12. */
3996 remote_search (int len, char *data, char *mask, CORE_ADDR startaddr,
3997 int increment, CORE_ADDR lorange, CORE_ADDR hirange,
3998 CORE_ADDR *addr_found, char *data_found)
4000 if (increment == -4 && len == 4)
4002 long mask_long, data_long;
4003 long data_found_long;
4004 CORE_ADDR addr_we_found;
4005 char *buf = alloca (rs->remote_packet_size);
4006 long returned_long[2];
4009 mask_long = extract_unsigned_integer (mask, len);
4010 data_long = extract_unsigned_integer (data, len);
4011 sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long);
4013 getpkt (buf, (rs->remote_packet_size), 0);
4016 /* The stub doesn't support the 't' request. We might want to
4017 remember this fact, but on the other hand the stub could be
4018 switched on us. Maybe we should remember it only until
4019 the next "target remote". */
4020 generic_search (len, data, mask, startaddr, increment, lorange,
4021 hirange, addr_found, data_found);
4026 /* There is no correspondance between what the remote protocol uses
4027 for errors and errno codes. We would like a cleaner way of
4028 representing errors (big enough to include errno codes, bfd_error
4029 codes, and others). But for now just use EIO. */
4030 memory_error (EIO, startaddr);
4033 while (*p != '\0' && *p != ',')
4034 addr_we_found = (addr_we_found << 4) + fromhex (*p++);
4036 error ("Protocol error: short return for search");
4038 data_found_long = 0;
4039 while (*p != '\0' && *p != ',')
4040 data_found_long = (data_found_long << 4) + fromhex (*p++);
4041 /* Ignore anything after this comma, for future extensions. */
4043 if (addr_we_found < lorange || addr_we_found >= hirange)
4049 *addr_found = addr_we_found;
4050 *data_found = store_unsigned_integer (data_we_found, len);
4053 generic_search (len, data, mask, startaddr, increment, lorange,
4054 hirange, addr_found, data_found);
4059 remote_files_info (struct target_ops *ignore)
4061 puts_filtered ("Debugging a target over a serial line.\n");
4064 /* Stuff for dealing with the packets which are part of this protocol.
4065 See comment at top of file for details. */
4067 /* Read a single character from the remote end, masking it down to 7 bits. */
4070 readchar (int timeout)
4074 ch = serial_readchar (remote_desc, timeout);
4079 switch ((enum serial_rc) ch)
4082 target_mourn_inferior ();
4083 error ("Remote connection closed");
4086 perror_with_name ("Remote communication error");
4088 case SERIAL_TIMEOUT:
4094 /* Send the command in BUF to the remote machine, and read the reply
4095 into BUF. Report an error if we get an error reply. */
4098 remote_send (char *buf,
4102 getpkt (buf, sizeof_buf, 0);
4105 error ("Remote failure reply: %s", buf);
4108 /* Display a null-terminated packet on stdout, for debugging, using C
4112 print_packet (char *buf)
4114 puts_filtered ("\"");
4115 fputstr_filtered (buf, '"', gdb_stdout);
4116 puts_filtered ("\"");
4122 return putpkt_binary (buf, strlen (buf));
4125 /* Send a packet to the remote machine, with error checking. The data
4126 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4127 to account for the $, # and checksum, and for a possible /0 if we are
4128 debugging (remote_debug) and want to print the sent packet as a string */
4131 putpkt_binary (char *buf, int cnt)
4133 struct remote_state *rs = get_remote_state ();
4135 unsigned char csum = 0;
4136 char *buf2 = alloca (cnt + 6);
4137 long sizeof_junkbuf = (rs->remote_packet_size);
4138 char *junkbuf = alloca (sizeof_junkbuf);
4144 /* Copy the packet into buffer BUF2, encapsulating it
4145 and giving it a checksum. */
4150 for (i = 0; i < cnt; i++)
4156 *p++ = tohex ((csum >> 4) & 0xf);
4157 *p++ = tohex (csum & 0xf);
4159 /* Send it over and over until we get a positive ack. */
4163 int started_error_output = 0;
4168 fprintf_unfiltered (gdb_stdlog, "Sending packet: ");
4169 fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog);
4170 fprintf_unfiltered (gdb_stdlog, "...");
4171 gdb_flush (gdb_stdlog);
4173 if (serial_write (remote_desc, buf2, p - buf2))
4174 perror_with_name ("putpkt: write failed");
4176 /* read until either a timeout occurs (-2) or '+' is read */
4179 ch = readchar (remote_timeout);
4187 case SERIAL_TIMEOUT:
4189 if (started_error_output)
4191 putchar_unfiltered ('\n');
4192 started_error_output = 0;
4201 fprintf_unfiltered (gdb_stdlog, "Ack\n");
4205 fprintf_unfiltered (gdb_stdlog, "Nak\n");
4206 case SERIAL_TIMEOUT:
4210 break; /* Retransmit buffer */
4214 fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n");
4215 /* It's probably an old response, and we're out of sync.
4216 Just gobble up the packet and ignore it. */
4217 read_frame (junkbuf, sizeof_junkbuf);
4218 continue; /* Now, go look for + */
4223 if (!started_error_output)
4225 started_error_output = 1;
4226 fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: ");
4228 fputc_unfiltered (ch & 0177, gdb_stdlog);
4232 break; /* Here to retransmit */
4236 /* This is wrong. If doing a long backtrace, the user should be
4237 able to get out next time we call QUIT, without anything as
4238 violent as interrupt_query. If we want to provide a way out of
4239 here without getting to the next QUIT, it should be based on
4240 hitting ^C twice as in remote_wait. */
4250 static int remote_cisco_mode;
4252 /* Come here after finding the start of the frame. Collect the rest
4253 into BUF, verifying the checksum, length, and handling run-length
4254 compression. No more than sizeof_buf-1 characters are read so that
4255 the buffer can be NUL terminated.
4257 Returns -1 on error, number of characters in buffer (ignoring the
4258 trailing NULL) on success. (could be extended to return one of the
4259 SERIAL status indications). */
4262 read_frame (char *buf,
4274 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4275 c = readchar (remote_timeout);
4278 case SERIAL_TIMEOUT:
4280 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog);
4284 fputs_filtered ("Saw new packet start in middle of old one\n",
4286 return -1; /* Start a new packet, count retries */
4289 unsigned char pktcsum;
4295 check_0 = readchar (remote_timeout);
4297 check_1 = readchar (remote_timeout);
4299 if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT)
4302 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog);
4305 else if (check_0 < 0 || check_1 < 0)
4308 fputs_filtered ("Communication error in checksum\n", gdb_stdlog);
4312 pktcsum = (fromhex (check_0) << 4) | fromhex (check_1);
4313 if (csum == pktcsum)
4318 fprintf_filtered (gdb_stdlog,
4319 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4321 fputs_filtered (buf, gdb_stdlog);
4322 fputs_filtered ("\n", gdb_stdlog);
4324 /* Number of characters in buffer ignoring trailing
4328 case '*': /* Run length encoding */
4333 if (remote_cisco_mode == 0)
4335 c = readchar (remote_timeout);
4337 repeat = c - ' ' + 3; /* Compute repeat count */
4341 /* Cisco's run-length encoding variant uses two
4342 hex chars to represent the repeat count. */
4344 c = readchar (remote_timeout);
4346 repeat = fromhex (c) << 4;
4347 c = readchar (remote_timeout);
4349 repeat += fromhex (c);
4352 /* The character before ``*'' is repeated. */
4354 if (repeat > 0 && repeat <= 255
4356 && bc + repeat - 1 < sizeof_buf - 1)
4358 memset (&buf[bc], buf[bc - 1], repeat);
4364 printf_filtered ("Repeat count %d too large for buffer: ", repeat);
4365 puts_filtered (buf);
4366 puts_filtered ("\n");
4370 if (bc < sizeof_buf - 1)
4378 puts_filtered ("Remote packet too long: ");
4379 puts_filtered (buf);
4380 puts_filtered ("\n");
4387 /* Read a packet from the remote machine, with error checking, and
4388 store it in BUF. If FOREVER, wait forever rather than timing out;
4389 this is used (in synchronous mode) to wait for a target that is is
4390 executing user code to stop. */
4391 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4392 don't have to change all the calls to getpkt to deal with the
4393 return value, because at the moment I don't know what the right
4394 thing to do it for those. */
4402 timed_out = getpkt_sane (buf, sizeof_buf, forever);
4406 /* Read a packet from the remote machine, with error checking, and
4407 store it in BUF. If FOREVER, wait forever rather than timing out;
4408 this is used (in synchronous mode) to wait for a target that is is
4409 executing user code to stop. If FOREVER == 0, this function is
4410 allowed to time out gracefully and return an indication of this to
4413 getpkt_sane (char *buf,
4422 strcpy (buf, "timeout");
4426 timeout = watchdog > 0 ? watchdog : -1;
4430 timeout = remote_timeout;
4434 for (tries = 1; tries <= MAX_TRIES; tries++)
4436 /* This can loop forever if the remote side sends us characters
4437 continuously, but if it pauses, we'll get a zero from readchar
4438 because of timeout. Then we'll count that as a retry. */
4440 /* Note that we will only wait forever prior to the start of a packet.
4441 After that, we expect characters to arrive at a brisk pace. They
4442 should show up within remote_timeout intervals. */
4446 c = readchar (timeout);
4448 if (c == SERIAL_TIMEOUT)
4450 if (forever) /* Watchdog went off? Kill the target. */
4453 target_mourn_inferior ();
4454 error ("Watchdog has expired. Target detached.\n");
4457 fputs_filtered ("Timed out.\n", gdb_stdlog);
4463 /* We've found the start of a packet, now collect the data. */
4465 val = read_frame (buf, sizeof_buf);
4471 fprintf_unfiltered (gdb_stdlog, "Packet received: ");
4472 fputstr_unfiltered (buf, 0, gdb_stdlog);
4473 fprintf_unfiltered (gdb_stdlog, "\n");
4475 serial_write (remote_desc, "+", 1);
4479 /* Try the whole thing again. */
4481 serial_write (remote_desc, "-", 1);
4484 /* We have tried hard enough, and just can't receive the packet. Give up. */
4486 printf_unfiltered ("Ignoring packet error, continuing...\n");
4487 serial_write (remote_desc, "+", 1);
4494 /* For some mysterious reason, wait_for_inferior calls kill instead of
4495 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4499 target_mourn_inferior ();
4503 /* Use catch_errors so the user can quit from gdb even when we aren't on
4504 speaking terms with the remote system. */
4505 catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR);
4507 /* Don't wait for it to die. I'm not really sure it matters whether
4508 we do or not. For the existing stubs, kill is a noop. */
4509 target_mourn_inferior ();
4512 /* Async version of remote_kill. */
4514 remote_async_kill (void)
4516 /* Unregister the file descriptor from the event loop. */
4517 if (target_is_async_p ())
4518 serial_async (remote_desc, NULL, 0);
4520 /* For some mysterious reason, wait_for_inferior calls kill instead of
4521 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4525 target_mourn_inferior ();
4529 /* Use catch_errors so the user can quit from gdb even when we aren't on
4530 speaking terms with the remote system. */
4531 catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR);
4533 /* Don't wait for it to die. I'm not really sure it matters whether
4534 we do or not. For the existing stubs, kill is a noop. */
4535 target_mourn_inferior ();
4541 remote_mourn_1 (&remote_ops);
4545 remote_async_mourn (void)
4547 remote_mourn_1 (&remote_async_ops);
4551 extended_remote_mourn (void)
4553 /* We do _not_ want to mourn the target like this; this will
4554 remove the extended remote target from the target stack,
4555 and the next time the user says "run" it'll fail.
4557 FIXME: What is the right thing to do here? */
4559 remote_mourn_1 (&extended_remote_ops);
4563 /* Worker function for remote_mourn. */
4565 remote_mourn_1 (struct target_ops *target)
4567 unpush_target (target);
4568 generic_mourn_inferior ();
4571 /* In the extended protocol we want to be able to do things like
4572 "run" and have them basically work as expected. So we need
4573 a special create_inferior function.
4575 FIXME: One day add support for changing the exec file
4576 we're debugging, arguments and an environment. */
4579 extended_remote_create_inferior (char *exec_file, char *args, char **env)
4581 /* Rip out the breakpoints; we'll reinsert them after restarting
4582 the remote server. */
4583 remove_breakpoints ();
4585 /* Now restart the remote server. */
4586 extended_remote_restart ();
4588 /* Now put the breakpoints back in. This way we're safe if the
4589 restart function works via a unix fork on the remote side. */
4590 insert_breakpoints ();
4592 /* Clean up from the last time we were running. */
4593 clear_proceed_status ();
4595 /* Let the remote process run. */
4596 proceed (-1, TARGET_SIGNAL_0, 0);
4599 /* Async version of extended_remote_create_inferior. */
4601 extended_remote_async_create_inferior (char *exec_file, char *args, char **env)
4603 /* Rip out the breakpoints; we'll reinsert them after restarting
4604 the remote server. */
4605 remove_breakpoints ();
4607 /* If running asynchronously, register the target file descriptor
4608 with the event loop. */
4609 if (event_loop_p && target_can_async_p ())
4610 target_async (inferior_event_handler, 0);
4612 /* Now restart the remote server. */
4613 extended_remote_restart ();
4615 /* Now put the breakpoints back in. This way we're safe if the
4616 restart function works via a unix fork on the remote side. */
4617 insert_breakpoints ();
4619 /* Clean up from the last time we were running. */
4620 clear_proceed_status ();
4622 /* Let the remote process run. */
4623 proceed (-1, TARGET_SIGNAL_0, 0);
4627 /* On some machines, e.g. 68k, we may use a different breakpoint
4628 instruction than other targets; in those use REMOTE_BREAKPOINT
4629 instead of just BREAKPOINT_FROM_PC. Also, bi-endian targets may
4630 define LITTLE_REMOTE_BREAKPOINT and BIG_REMOTE_BREAKPOINT. If none
4631 of these are defined, we just call the standard routines that are
4634 /* FIXME, these ought to be done in a more dynamic fashion. For instance,
4635 the choice of breakpoint instruction affects target program design and
4636 vice versa, and by making it user-tweakable, the special code here
4637 goes away and we need fewer special GDB configurations. */
4639 #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
4640 #define REMOTE_BREAKPOINT
4643 #ifdef REMOTE_BREAKPOINT
4645 /* If the target isn't bi-endian, just pretend it is. */
4646 #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT)
4647 #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4648 #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4651 static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT;
4652 static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT;
4654 #endif /* REMOTE_BREAKPOINT */
4656 /* Insert a breakpoint on targets that don't have any better
4657 breakpoint support. We read the contents of the target location
4658 and stash it, then overwrite it with a breakpoint instruction.
4659 ADDR is the target location in the target machine. CONTENTS_CACHE
4660 is a pointer to memory allocated for saving the target contents.
4661 It is guaranteed by the caller to be long enough to save the number
4662 of bytes returned by BREAKPOINT_FROM_PC. */
4665 remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
4667 struct remote_state *rs = get_remote_state ();
4668 #ifdef REMOTE_BREAKPOINT
4673 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4674 If it succeeds, then set the support to PACKET_ENABLE. If it
4675 fails, and the user has explicitly requested the Z support then
4676 report an error, otherwise, mark it disabled and go on. */
4678 if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE)
4680 char *buf = alloca (rs->remote_packet_size);
4683 addr = remote_address_masked (addr);
4687 p += hexnumstr (p, (ULONGEST) addr);
4688 BREAKPOINT_FROM_PC (&addr, &bp_size);
4689 sprintf (p, ",%d", bp_size);
4692 getpkt (buf, (rs->remote_packet_size), 0);
4694 switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP]))
4700 case PACKET_UNKNOWN:
4705 #ifdef REMOTE_BREAKPOINT
4706 val = target_read_memory (addr, contents_cache, sizeof big_break_insn);
4710 if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
4711 val = target_write_memory (addr, (char *) big_break_insn,
4712 sizeof big_break_insn);
4714 val = target_write_memory (addr, (char *) little_break_insn,
4715 sizeof little_break_insn);
4720 return memory_insert_breakpoint (addr, contents_cache);
4721 #endif /* REMOTE_BREAKPOINT */
4725 remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
4727 struct remote_state *rs = get_remote_state ();
4730 if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE)
4732 char *buf = alloca (rs->remote_packet_size);
4739 addr = remote_address_masked (addr);
4740 p += hexnumstr (p, (ULONGEST) addr);
4741 BREAKPOINT_FROM_PC (&addr, &bp_size);
4742 sprintf (p, ",%d", bp_size);
4745 getpkt (buf, (rs->remote_packet_size), 0);
4747 return (buf[0] == 'E');
4750 #ifdef REMOTE_BREAKPOINT
4751 return target_write_memory (addr, contents_cache, sizeof big_break_insn);
4753 return memory_remove_breakpoint (addr, contents_cache);
4754 #endif /* REMOTE_BREAKPOINT */
4758 watchpoint_to_Z_packet (int type)
4772 internal_error (__FILE__, __LINE__,
4773 "hw_bp_to_z: bad watchpoint type %d", type);
4778 remote_insert_watchpoint (CORE_ADDR addr, int len, int type)
4780 struct remote_state *rs = get_remote_state ();
4781 char *buf = alloca (rs->remote_packet_size);
4783 enum Z_packet_type packet = watchpoint_to_Z_packet (type);
4785 if (remote_protocol_Z[packet].support == PACKET_DISABLE)
4786 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4787 remote_protocol_Z[packet].name,
4788 remote_protocol_Z[packet].title);
4790 sprintf (buf, "Z%x,", packet);
4791 p = strchr (buf, '\0');
4792 addr = remote_address_masked (addr);
4793 p += hexnumstr (p, (ULONGEST) addr);
4794 sprintf (p, ",%x", len);
4797 getpkt (buf, (rs->remote_packet_size), 0);
4799 switch (packet_ok (buf, &remote_protocol_Z[packet]))
4802 case PACKET_UNKNOWN:
4807 internal_error (__FILE__, __LINE__,
4808 "remote_insert_watchpoint: reached end of function");
4813 remote_remove_watchpoint (CORE_ADDR addr, int len, int type)
4815 struct remote_state *rs = get_remote_state ();
4816 char *buf = alloca (rs->remote_packet_size);
4818 enum Z_packet_type packet = watchpoint_to_Z_packet (type);
4820 if (remote_protocol_Z[packet].support == PACKET_DISABLE)
4821 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4822 remote_protocol_Z[packet].name,
4823 remote_protocol_Z[packet].title);
4825 sprintf (buf, "z%x,", packet);
4826 p = strchr (buf, '\0');
4827 addr = remote_address_masked (addr);
4828 p += hexnumstr (p, (ULONGEST) addr);
4829 sprintf (p, ",%x", len);
4831 getpkt (buf, (rs->remote_packet_size), 0);
4833 switch (packet_ok (buf, &remote_protocol_Z[packet]))
4836 case PACKET_UNKNOWN:
4841 internal_error (__FILE__, __LINE__,
4842 "remote_remove_watchpoint: reached end of function");
4846 int remote_hw_watchpoint_limit = -1;
4847 int remote_hw_breakpoint_limit = -1;
4850 remote_check_watch_resources (int type, int cnt, int ot)
4852 if (type == bp_hardware_breakpoint)
4854 if (remote_hw_breakpoint_limit == 0)
4856 else if (remote_hw_breakpoint_limit < 0)
4858 else if (cnt <= remote_hw_breakpoint_limit)
4863 if (remote_hw_watchpoint_limit == 0)
4865 else if (remote_hw_watchpoint_limit < 0)
4869 else if (cnt <= remote_hw_watchpoint_limit)
4876 remote_stopped_by_watchpoint (void)
4878 return remote_stopped_by_watchpoint_p;
4882 remote_stopped_data_address (void)
4884 if (remote_stopped_by_watchpoint ())
4885 return remote_watch_data_address;
4886 return (CORE_ADDR)0;
4891 remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow)
4894 struct remote_state *rs = get_remote_state ();
4895 char *buf = alloca (rs->remote_packet_size);
4898 /* The length field should be set to the size of a breakpoint
4901 BREAKPOINT_FROM_PC (&addr, &len);
4903 if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE)
4904 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4905 remote_protocol_Z[Z_PACKET_HARDWARE_BP].name,
4906 remote_protocol_Z[Z_PACKET_HARDWARE_BP].title);
4912 addr = remote_address_masked (addr);
4913 p += hexnumstr (p, (ULONGEST) addr);
4914 sprintf (p, ",%x", len);
4917 getpkt (buf, (rs->remote_packet_size), 0);
4919 switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP]))
4922 case PACKET_UNKNOWN:
4927 internal_error (__FILE__, __LINE__,
4928 "remote_insert_hw_breakpoint: reached end of function");
4933 remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow)
4936 struct remote_state *rs = get_remote_state ();
4937 char *buf = alloca (rs->remote_packet_size);
4940 /* The length field should be set to the size of a breakpoint
4943 BREAKPOINT_FROM_PC (&addr, &len);
4945 if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE)
4946 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4947 remote_protocol_Z[Z_PACKET_HARDWARE_BP].name,
4948 remote_protocol_Z[Z_PACKET_HARDWARE_BP].title);
4954 addr = remote_address_masked (addr);
4955 p += hexnumstr (p, (ULONGEST) addr);
4956 sprintf (p, ",%x", len);
4959 getpkt (buf, (rs->remote_packet_size), 0);
4961 switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP]))
4964 case PACKET_UNKNOWN:
4969 internal_error (__FILE__, __LINE__,
4970 "remote_remove_hw_breakpoint: reached end of function");
4973 /* Some targets are only capable of doing downloads, and afterwards
4974 they switch to the remote serial protocol. This function provides
4975 a clean way to get from the download target to the remote target.
4976 It's basically just a wrapper so that we don't have to expose any
4977 of the internal workings of remote.c.
4979 Prior to calling this routine, you should shutdown the current
4980 target code, else you will get the "A program is being debugged
4981 already..." message. Usually a call to pop_target() suffices. */
4984 push_remote_target (char *name, int from_tty)
4986 printf_filtered ("Switching to remote protocol\n");
4987 remote_open (name, from_tty);
4990 /* Table used by the crc32 function to calcuate the checksum. */
4992 static unsigned long crc32_table[256] =
4995 static unsigned long
4996 crc32 (unsigned char *buf, int len, unsigned int crc)
4998 if (!crc32_table[1])
5000 /* Initialize the CRC table and the decoding table. */
5004 for (i = 0; i < 256; i++)
5006 for (c = i << 24, j = 8; j > 0; --j)
5007 c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
5014 crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255];
5020 /* compare-sections command
5022 With no arguments, compares each loadable section in the exec bfd
5023 with the same memory range on the target, and reports mismatches.
5024 Useful for verifying the image on the target against the exec file.
5025 Depends on the target understanding the new "qCRC:" request. */
5027 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5028 target method (target verify memory) and generic version of the
5029 actual command. This will allow other high-level code (especially
5030 generic_load()) to make use of this target functionality. */
5033 compare_sections_command (char *args, int from_tty)
5035 struct remote_state *rs = get_remote_state ();
5037 unsigned long host_crc, target_crc;
5038 extern bfd *exec_bfd;
5039 struct cleanup *old_chain;
5042 const char *sectname;
5043 char *buf = alloca (rs->remote_packet_size);
5050 error ("command cannot be used without an exec file");
5051 if (!current_target.to_shortname ||
5052 strcmp (current_target.to_shortname, "remote") != 0)
5053 error ("command can only be used with remote target");
5055 for (s = exec_bfd->sections; s; s = s->next)
5057 if (!(s->flags & SEC_LOAD))
5058 continue; /* skip non-loadable section */
5060 size = bfd_get_section_size_before_reloc (s);
5062 continue; /* skip zero-length section */
5064 sectname = bfd_get_section_name (exec_bfd, s);
5065 if (args && strcmp (args, sectname) != 0)
5066 continue; /* not the section selected by user */
5068 matched = 1; /* do this section */
5070 /* FIXME: assumes lma can fit into long */
5071 sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size);
5074 /* be clever; compute the host_crc before waiting for target reply */
5075 sectdata = xmalloc (size);
5076 old_chain = make_cleanup (xfree, sectdata);
5077 bfd_get_section_contents (exec_bfd, s, sectdata, 0, size);
5078 host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff);
5080 getpkt (buf, (rs->remote_packet_size), 0);
5082 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5083 sectname, paddr (lma), paddr (lma + size));
5085 error ("remote target does not support this operation");
5087 for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++)
5088 target_crc = target_crc * 16 + fromhex (*tmp);
5090 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5091 sectname, paddr (lma), paddr (lma + size));
5092 if (host_crc == target_crc)
5093 printf_filtered ("matched.\n");
5096 printf_filtered ("MIS-MATCHED!\n");
5100 do_cleanups (old_chain);
5103 warning ("One or more sections of the remote executable does not match\n\
5104 the loaded file\n");
5105 if (args && !matched)
5106 printf_filtered ("No loaded section named '%s'.\n", args);
5110 remote_query (int query_type, char *buf, char *outbuf, int *bufsiz)
5112 struct remote_state *rs = get_remote_state ();
5114 char *buf2 = alloca (rs->remote_packet_size);
5115 char *p2 = &buf2[0];
5118 error ("null pointer to remote bufer size specified");
5120 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5121 the caller know and return what the minimum size is */
5122 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5123 if (*bufsiz < (rs->remote_packet_size))
5125 *bufsiz = (rs->remote_packet_size);
5129 /* except for querying the minimum buffer size, target must be open */
5131 error ("remote query is only available after target open");
5133 /* we only take uppercase letters as query types, at least for now */
5134 if ((query_type < 'A') || (query_type > 'Z'))
5135 error ("invalid remote query type");
5138 error ("null remote query specified");
5141 error ("remote query requires a buffer to receive data");
5148 /* we used one buffer char for the remote protocol q command and another
5149 for the query type. As the remote protocol encapsulation uses 4 chars
5150 plus one extra in case we are debugging (remote_debug),
5151 we have PBUFZIZ - 7 left to pack the query string */
5153 while (buf[i] && (i < ((rs->remote_packet_size) - 8)))
5155 /* bad caller may have sent forbidden characters */
5156 if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#'))
5157 error ("illegal characters in query string");
5165 error ("query larger than available buffer");
5171 getpkt (outbuf, *bufsiz, 0);
5177 remote_rcmd (char *command,
5178 struct ui_file *outbuf)
5180 struct remote_state *rs = get_remote_state ();
5182 char *buf = alloca (rs->remote_packet_size);
5186 error ("remote rcmd is only available after target open");
5188 /* Send a NULL command across as an empty command */
5189 if (command == NULL)
5192 /* The query prefix */
5193 strcpy (buf, "qRcmd,");
5194 p = strchr (buf, '\0');
5196 if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size))
5197 error ("\"monitor\" command ``%s'' is too long\n", command);
5199 /* Encode the actual command */
5200 bin2hex (command, p, 0);
5202 if (putpkt (buf) < 0)
5203 error ("Communication problem with target\n");
5205 /* get/display the response */
5208 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5210 getpkt (buf, (rs->remote_packet_size), 0);
5212 error ("Target does not support this command\n");
5213 if (buf[0] == 'O' && buf[1] != 'K')
5215 remote_console_output (buf + 1); /* 'O' message from stub */
5218 if (strcmp (buf, "OK") == 0)
5220 if (strlen (buf) == 3 && buf[0] == 'E'
5221 && isdigit (buf[1]) && isdigit (buf[2]))
5223 error ("Protocol error with Rcmd");
5225 for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2)
5227 char c = (fromhex (p[0]) << 4) + fromhex (p[1]);
5228 fputc_unfiltered (c, outbuf);
5235 packet_command (char *args, int from_tty)
5237 struct remote_state *rs = get_remote_state ();
5238 char *buf = alloca (rs->remote_packet_size);
5241 error ("command can only be used with remote target");
5244 error ("remote-packet command requires packet text as argument");
5246 puts_filtered ("sending: ");
5247 print_packet (args);
5248 puts_filtered ("\n");
5251 getpkt (buf, (rs->remote_packet_size), 0);
5252 puts_filtered ("received: ");
5254 puts_filtered ("\n");
5258 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5260 static void display_thread_info (struct gdb_ext_thread_info *info);
5262 static void threadset_test_cmd (char *cmd, int tty);
5264 static void threadalive_test (char *cmd, int tty);
5266 static void threadlist_test_cmd (char *cmd, int tty);
5268 int get_and_display_threadinfo (threadref * ref);
5270 static void threadinfo_test_cmd (char *cmd, int tty);
5272 static int thread_display_step (threadref * ref, void *context);
5274 static void threadlist_update_test_cmd (char *cmd, int tty);
5276 static void init_remote_threadtests (void);
5278 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5281 threadset_test_cmd (char *cmd, int tty)
5283 int sample_thread = SAMPLE_THREAD;
5285 printf_filtered ("Remote threadset test\n");
5286 set_thread (sample_thread, 1);
5291 threadalive_test (char *cmd, int tty)
5293 int sample_thread = SAMPLE_THREAD;
5295 if (remote_thread_alive (pid_to_ptid (sample_thread)))
5296 printf_filtered ("PASS: Thread alive test\n");
5298 printf_filtered ("FAIL: Thread alive test\n");
5301 void output_threadid (char *title, threadref * ref);
5304 output_threadid (char *title, threadref *ref)
5308 pack_threadid (&hexid[0], ref); /* Convert threead id into hex */
5310 printf_filtered ("%s %s\n", title, (&hexid[0]));
5314 threadlist_test_cmd (char *cmd, int tty)
5317 threadref nextthread;
5318 int done, result_count;
5319 threadref threadlist[3];
5321 printf_filtered ("Remote Threadlist test\n");
5322 if (!remote_get_threadlist (startflag, &nextthread, 3, &done,
5323 &result_count, &threadlist[0]))
5324 printf_filtered ("FAIL: threadlist test\n");
5327 threadref *scan = threadlist;
5328 threadref *limit = scan + result_count;
5330 while (scan < limit)
5331 output_threadid (" thread ", scan++);
5336 display_thread_info (struct gdb_ext_thread_info *info)
5338 output_threadid ("Threadid: ", &info->threadid);
5339 printf_filtered ("Name: %s\n ", info->shortname);
5340 printf_filtered ("State: %s\n", info->display);
5341 printf_filtered ("other: %s\n\n", info->more_display);
5345 get_and_display_threadinfo (threadref *ref)
5349 struct gdb_ext_thread_info threadinfo;
5351 set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
5352 | TAG_MOREDISPLAY | TAG_DISPLAY;
5353 if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo)))
5354 display_thread_info (&threadinfo);
5359 threadinfo_test_cmd (char *cmd, int tty)
5361 int athread = SAMPLE_THREAD;
5365 int_to_threadref (&thread, athread);
5366 printf_filtered ("Remote Threadinfo test\n");
5367 if (!get_and_display_threadinfo (&thread))
5368 printf_filtered ("FAIL cannot get thread info\n");
5372 thread_display_step (threadref *ref, void *context)
5374 /* output_threadid(" threadstep ",ref); *//* simple test */
5375 return get_and_display_threadinfo (ref);
5379 threadlist_update_test_cmd (char *cmd, int tty)
5381 printf_filtered ("Remote Threadlist update test\n");
5382 remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS);
5386 init_remote_threadtests (void)
5388 add_com ("tlist", class_obscure, threadlist_test_cmd,
5389 "Fetch and print the remote list of thread identifiers, one pkt only");
5390 add_com ("tinfo", class_obscure, threadinfo_test_cmd,
5391 "Fetch and display info about one thread");
5392 add_com ("tset", class_obscure, threadset_test_cmd,
5393 "Test setting to a different thread");
5394 add_com ("tupd", class_obscure, threadlist_update_test_cmd,
5395 "Iterate through updating all remote thread info");
5396 add_com ("talive", class_obscure, threadalive_test,
5397 " Remote thread alive test ");
5402 /* Convert a thread ID to a string. Returns the string in a static
5406 remote_pid_to_str (ptid_t ptid)
5408 static char buf[30];
5410 sprintf (buf, "Thread %d", PIDGET (ptid));
5415 init_remote_ops (void)
5417 remote_ops.to_shortname = "remote";
5418 remote_ops.to_longname = "Remote serial target in gdb-specific protocol";
5420 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5421 Specify the serial device it is connected to\n\
5422 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5423 remote_ops.to_open = remote_open;
5424 remote_ops.to_close = remote_close;
5425 remote_ops.to_detach = remote_detach;
5426 remote_ops.to_resume = remote_resume;
5427 remote_ops.to_wait = remote_wait;
5428 remote_ops.to_fetch_registers = remote_fetch_registers;
5429 remote_ops.to_store_registers = remote_store_registers;
5430 remote_ops.to_prepare_to_store = remote_prepare_to_store;
5431 remote_ops.to_xfer_memory = remote_xfer_memory;
5432 remote_ops.to_files_info = remote_files_info;
5433 remote_ops.to_insert_breakpoint = remote_insert_breakpoint;
5434 remote_ops.to_remove_breakpoint = remote_remove_breakpoint;
5435 remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint;
5436 remote_ops.to_stopped_data_address = remote_stopped_data_address;
5437 remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
5438 remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
5439 remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
5440 remote_ops.to_insert_watchpoint = remote_insert_watchpoint;
5441 remote_ops.to_remove_watchpoint = remote_remove_watchpoint;
5442 remote_ops.to_kill = remote_kill;
5443 remote_ops.to_load = generic_load;
5444 remote_ops.to_mourn_inferior = remote_mourn;
5445 remote_ops.to_thread_alive = remote_thread_alive;
5446 remote_ops.to_find_new_threads = remote_threads_info;
5447 remote_ops.to_pid_to_str = remote_pid_to_str;
5448 remote_ops.to_extra_thread_info = remote_threads_extra_info;
5449 remote_ops.to_stop = remote_stop;
5450 remote_ops.to_query = remote_query;
5451 remote_ops.to_rcmd = remote_rcmd;
5452 remote_ops.to_stratum = process_stratum;
5453 remote_ops.to_has_all_memory = 1;
5454 remote_ops.to_has_memory = 1;
5455 remote_ops.to_has_stack = 1;
5456 remote_ops.to_has_registers = 1;
5457 remote_ops.to_has_execution = 1;
5458 remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
5459 remote_ops.to_magic = OPS_MAGIC;
5462 /* Set up the extended remote vector by making a copy of the standard
5463 remote vector and adding to it. */
5466 init_extended_remote_ops (void)
5468 extended_remote_ops = remote_ops;
5470 extended_remote_ops.to_shortname = "extended-remote";
5471 extended_remote_ops.to_longname =
5472 "Extended remote serial target in gdb-specific protocol";
5473 extended_remote_ops.to_doc =
5474 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5475 Specify the serial device it is connected to (e.g. /dev/ttya).",
5476 extended_remote_ops.to_open = extended_remote_open;
5477 extended_remote_ops.to_create_inferior = extended_remote_create_inferior;
5478 extended_remote_ops.to_mourn_inferior = extended_remote_mourn;
5482 * Command: info remote-process
5484 * This implements Cisco's version of the "info proc" command.
5486 * This query allows the target stub to return an arbitrary string
5487 * (or strings) giving arbitrary information about the target process.
5488 * This is optional; the target stub isn't required to implement it.
5490 * Syntax: qfProcessInfo request first string
5491 * qsProcessInfo request subsequent string
5492 * reply: 'O'<hex-encoded-string>
5493 * 'l' last reply (empty)
5497 remote_info_process (char *args, int from_tty)
5499 struct remote_state *rs = get_remote_state ();
5500 char *buf = alloca (rs->remote_packet_size);
5502 if (remote_desc == 0)
5503 error ("Command can only be used when connected to the remote target.");
5505 putpkt ("qfProcessInfo");
5506 getpkt (buf, (rs->remote_packet_size), 0);
5508 return; /* Silently: target does not support this feature. */
5511 error ("info proc: target error.");
5513 while (buf[0] == 'O') /* Capitol-O packet */
5515 remote_console_output (&buf[1]);
5516 putpkt ("qsProcessInfo");
5517 getpkt (buf, (rs->remote_packet_size), 0);
5526 remote_cisco_open (char *name, int from_tty)
5530 error ("To open a remote debug connection, you need to specify what \n"
5531 "device is attached to the remote system (e.g. host:port).");
5533 /* See FIXME above */
5534 wait_forever_enabled_p = 1;
5536 target_preopen (from_tty);
5538 unpush_target (&remote_cisco_ops);
5540 remote_desc = remote_serial_open (name);
5542 perror_with_name (name);
5545 * If a baud rate was specified on the gdb command line it will
5546 * be greater than the initial value of -1. If it is, use it otherwise
5550 baud_rate = (baud_rate > 0) ? baud_rate : 9600;
5551 if (serial_setbaudrate (remote_desc, baud_rate))
5553 serial_close (remote_desc);
5554 perror_with_name (name);
5557 serial_raw (remote_desc);
5559 /* If there is something sitting in the buffer we might take it as a
5560 response to a command, which would be bad. */
5561 serial_flush_input (remote_desc);
5565 puts_filtered ("Remote debugging using ");
5566 puts_filtered (name);
5567 puts_filtered ("\n");
5570 remote_cisco_mode = 1;
5572 push_target (&remote_cisco_ops); /* Switch to using cisco target now */
5574 init_all_packet_configs ();
5576 general_thread = -2;
5577 continue_thread = -2;
5579 /* Probe for ability to use "ThreadInfo" query, as required. */
5580 use_threadinfo_query = 1;
5581 use_threadextra_query = 1;
5583 /* Without this, some commands which require an active target (such
5584 as kill) won't work. This variable serves (at least) double duty
5585 as both the pid of the target process (if it has such), and as a
5586 flag indicating that a target is active. These functions should
5587 be split out into seperate variables, especially since GDB will
5588 someday have a notion of debugging several processes. */
5589 inferior_ptid = pid_to_ptid (MAGIC_NULL_PID);
5591 /* Start the remote connection; if error, discard this target. See
5592 the comments in remote_open_1() for further details such as the
5593 need to re-throw the exception. */
5594 ex = catch_exceptions (uiout,
5595 remote_start_remote_dummy, NULL,
5596 "Couldn't establish connection to remote"
5602 throw_exception (ex);
5607 remote_cisco_close (int quitting)
5609 remote_cisco_mode = 0;
5610 remote_close (quitting);
5614 remote_cisco_mourn (void)
5616 remote_mourn_1 (&remote_cisco_ops);
5628 /* Shared between readsocket() and readtty(). The size is arbitrary,
5629 however all targets are known to support a 400 character packet. */
5630 static char tty_input[400];
5632 static int escape_count;
5633 static int echo_check;
5634 extern int quit_flag;
5641 /* Loop until the socket doesn't have any more data */
5643 while ((data = readchar (0)) >= 0)
5645 /* Check for the escape sequence */
5648 /* If this is the fourth escape, get out */
5649 if (++escape_count == 4)
5654 { /* This is a '|', but not the fourth in a row.
5655 Continue without echoing it. If it isn't actually
5656 one of four in a row, it'll be echoed later. */
5663 /* Ensure any pending '|'s are flushed. */
5665 for (; escape_count > 0; escape_count--)
5669 if (data == '\r') /* If this is a return character, */
5670 continue; /* - just supress it. */
5672 if (echo_check != -1) /* Check for echo of user input. */
5674 if (tty_input[echo_check] == data)
5676 gdb_assert (echo_check <= sizeof (tty_input));
5677 echo_check++; /* Character matched user input: */
5678 continue; /* Continue without echoing it. */
5680 else if ((data == '\n') && (tty_input[echo_check] == '\r'))
5681 { /* End of the line (and of echo checking). */
5682 echo_check = -1; /* No more echo supression */
5683 continue; /* Continue without echoing. */
5686 { /* Failed check for echo of user input.
5687 We now have some suppressed output to flush! */
5690 for (j = 0; j < echo_check; j++)
5691 putchar (tty_input[j]);
5695 putchar (data); /* Default case: output the char. */
5698 if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */
5699 return READ_MORE; /* Try to read some more */
5701 return FATAL_ERROR; /* Trouble, bail out */
5709 /* First, read a buffer full from the terminal */
5710 tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1);
5711 if (tty_bytecount == -1)
5713 perror ("readtty: read failed");
5717 /* Remove a quoted newline. */
5718 if (tty_input[tty_bytecount - 1] == '\n' &&
5719 tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */
5721 tty_input[--tty_bytecount] = 0; /* remove newline */
5722 tty_input[--tty_bytecount] = 0; /* remove backslash */
5725 /* Turn trailing newlines into returns */
5726 if (tty_input[tty_bytecount - 1] == '\n')
5727 tty_input[tty_bytecount - 1] = '\r';
5729 /* If the line consists of a ~, enter debugging mode. */
5730 if ((tty_input[0] == '~') && (tty_bytecount == 2))
5733 /* Make this a zero terminated string and write it out */
5734 tty_input[tty_bytecount] = 0;
5735 if (serial_write (remote_desc, tty_input, tty_bytecount))
5737 perror_with_name ("readtty: write failed");
5747 fd_set input; /* file descriptors for select */
5748 int tablesize; /* max number of FDs for select */
5755 tablesize = 8 * sizeof (input);
5759 /* Check for anything from our socket - doesn't block. Note that
5760 this must be done *before* the select as there may be
5761 buffered I/O waiting to be processed. */
5763 if ((status = readsocket ()) == FATAL_ERROR)
5765 error ("Debugging terminated by communications error");
5767 else if (status != READ_MORE)
5772 fflush (stdout); /* Flush output before blocking */
5774 /* Now block on more socket input or TTY input */
5777 FD_SET (fileno (stdin), &input);
5778 FD_SET (deprecated_serial_fd (remote_desc), &input);
5780 status = select (tablesize, &input, 0, 0, 0);
5781 if ((status == -1) && (errno != EINTR))
5783 error ("Communications error on select %d", errno);
5786 /* Handle Control-C typed */
5790 if ((++quit_count) == 2)
5792 if (query ("Interrupt GDB? "))
5794 printf_filtered ("Interrupted by user.\n");
5795 throw_exception (RETURN_QUIT);
5802 serial_send_break (remote_desc);
5804 serial_write (remote_desc, "\003", 1);
5809 /* Handle console input */
5811 if (FD_ISSET (fileno (stdin), &input))
5815 status = readtty ();
5816 if (status == READ_MORE)
5819 return status; /* telnet session ended */
5825 remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status)
5827 if (minitelnet () != ENTER_DEBUG)
5829 error ("Debugging session terminated by protocol error");
5832 return remote_wait (ptid, status);
5836 init_remote_cisco_ops (void)
5838 remote_cisco_ops.to_shortname = "cisco";
5839 remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol";
5840 remote_cisco_ops.to_doc =
5841 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5842 Specify the serial device it is connected to (e.g. host:2020).";
5843 remote_cisco_ops.to_open = remote_cisco_open;
5844 remote_cisco_ops.to_close = remote_cisco_close;
5845 remote_cisco_ops.to_detach = remote_detach;
5846 remote_cisco_ops.to_resume = remote_resume;
5847 remote_cisco_ops.to_wait = remote_cisco_wait;
5848 remote_cisco_ops.to_fetch_registers = remote_fetch_registers;
5849 remote_cisco_ops.to_store_registers = remote_store_registers;
5850 remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store;
5851 remote_cisco_ops.to_xfer_memory = remote_xfer_memory;
5852 remote_cisco_ops.to_files_info = remote_files_info;
5853 remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint;
5854 remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint;
5855 remote_cisco_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
5856 remote_cisco_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
5857 remote_cisco_ops.to_insert_watchpoint = remote_insert_watchpoint;
5858 remote_cisco_ops.to_remove_watchpoint = remote_remove_watchpoint;
5859 remote_cisco_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint;
5860 remote_cisco_ops.to_stopped_data_address = remote_stopped_data_address;
5861 remote_cisco_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
5862 remote_cisco_ops.to_kill = remote_kill;
5863 remote_cisco_ops.to_load = generic_load;
5864 remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn;
5865 remote_cisco_ops.to_thread_alive = remote_thread_alive;
5866 remote_cisco_ops.to_find_new_threads = remote_threads_info;
5867 remote_cisco_ops.to_pid_to_str = remote_pid_to_str;
5868 remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info;
5869 remote_cisco_ops.to_stratum = process_stratum;
5870 remote_cisco_ops.to_has_all_memory = 1;
5871 remote_cisco_ops.to_has_memory = 1;
5872 remote_cisco_ops.to_has_stack = 1;
5873 remote_cisco_ops.to_has_registers = 1;
5874 remote_cisco_ops.to_has_execution = 1;
5875 remote_cisco_ops.to_magic = OPS_MAGIC;
5879 remote_can_async_p (void)
5881 /* We're async whenever the serial device is. */
5882 return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc);
5886 remote_is_async_p (void)
5888 /* We're async whenever the serial device is. */
5889 return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc);
5892 /* Pass the SERIAL event on and up to the client. One day this code
5893 will be able to delay notifying the client of an event until the
5894 point where an entire packet has been received. */
5896 static void (*async_client_callback) (enum inferior_event_type event_type, void *context);
5897 static void *async_client_context;
5898 static serial_event_ftype remote_async_serial_handler;
5901 remote_async_serial_handler (struct serial *scb, void *context)
5903 /* Don't propogate error information up to the client. Instead let
5904 the client find out about the error by querying the target. */
5905 async_client_callback (INF_REG_EVENT, async_client_context);
5909 remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context)
5911 if (current_target.to_async_mask_value == 0)
5912 internal_error (__FILE__, __LINE__,
5913 "Calling remote_async when async is masked");
5915 if (callback != NULL)
5917 serial_async (remote_desc, remote_async_serial_handler, NULL);
5918 async_client_callback = callback;
5919 async_client_context = context;
5922 serial_async (remote_desc, NULL, NULL);
5925 /* Target async and target extended-async.
5927 This are temporary targets, until it is all tested. Eventually
5928 async support will be incorporated int the usual 'remote'
5932 init_remote_async_ops (void)
5934 remote_async_ops.to_shortname = "async";
5935 remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol";
5936 remote_async_ops.to_doc =
5937 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5938 Specify the serial device it is connected to (e.g. /dev/ttya).";
5939 remote_async_ops.to_open = remote_async_open;
5940 remote_async_ops.to_close = remote_close;
5941 remote_async_ops.to_detach = remote_async_detach;
5942 remote_async_ops.to_resume = remote_async_resume;
5943 remote_async_ops.to_wait = remote_async_wait;
5944 remote_async_ops.to_fetch_registers = remote_fetch_registers;
5945 remote_async_ops.to_store_registers = remote_store_registers;
5946 remote_async_ops.to_prepare_to_store = remote_prepare_to_store;
5947 remote_async_ops.to_xfer_memory = remote_xfer_memory;
5948 remote_async_ops.to_files_info = remote_files_info;
5949 remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint;
5950 remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint;
5951 remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
5952 remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
5953 remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
5954 remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint;
5955 remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint;
5956 remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint;
5957 remote_async_ops.to_stopped_data_address = remote_stopped_data_address;
5958 remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior;
5959 remote_async_ops.to_terminal_ours = remote_async_terminal_ours;
5960 remote_async_ops.to_kill = remote_async_kill;
5961 remote_async_ops.to_load = generic_load;
5962 remote_async_ops.to_mourn_inferior = remote_async_mourn;
5963 remote_async_ops.to_thread_alive = remote_thread_alive;
5964 remote_async_ops.to_find_new_threads = remote_threads_info;
5965 remote_async_ops.to_pid_to_str = remote_pid_to_str;
5966 remote_async_ops.to_extra_thread_info = remote_threads_extra_info;
5967 remote_async_ops.to_stop = remote_stop;
5968 remote_async_ops.to_query = remote_query;
5969 remote_async_ops.to_rcmd = remote_rcmd;
5970 remote_async_ops.to_stratum = process_stratum;
5971 remote_async_ops.to_has_all_memory = 1;
5972 remote_async_ops.to_has_memory = 1;
5973 remote_async_ops.to_has_stack = 1;
5974 remote_async_ops.to_has_registers = 1;
5975 remote_async_ops.to_has_execution = 1;
5976 remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */
5977 remote_async_ops.to_can_async_p = remote_can_async_p;
5978 remote_async_ops.to_is_async_p = remote_is_async_p;
5979 remote_async_ops.to_async = remote_async;
5980 remote_async_ops.to_async_mask_value = 1;
5981 remote_async_ops.to_magic = OPS_MAGIC;
5984 /* Set up the async extended remote vector by making a copy of the standard
5985 remote vector and adding to it. */
5988 init_extended_async_remote_ops (void)
5990 extended_async_remote_ops = remote_async_ops;
5992 extended_async_remote_ops.to_shortname = "extended-async";
5993 extended_async_remote_ops.to_longname =
5994 "Extended remote serial target in async gdb-specific protocol";
5995 extended_async_remote_ops.to_doc =
5996 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
5997 Specify the serial device it is connected to (e.g. /dev/ttya).",
5998 extended_async_remote_ops.to_open = extended_remote_async_open;
5999 extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior;
6000 extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn;
6004 set_remote_cmd (char *args, int from_tty)
6009 show_remote_cmd (char *args, int from_tty)
6011 /* FIXME: cagney/2002-06-15: This function should iterate over
6012 remote_show_cmdlist for a list of sub commands to show. */
6013 show_remote_protocol_Z_packet_cmd (args, from_tty, NULL);
6014 show_remote_protocol_e_packet_cmd (args, from_tty, NULL);
6015 show_remote_protocol_E_packet_cmd (args, from_tty, NULL);
6016 show_remote_protocol_P_packet_cmd (args, from_tty, NULL);
6017 show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL);
6018 show_remote_protocol_binary_download_cmd (args, from_tty, NULL);
6022 build_remote_gdbarch_data (void)
6024 remote_address_size = TARGET_ADDR_BIT;
6027 /* Saved pointer to previous owner of the new_objfile event. */
6028 static void (*remote_new_objfile_chain) (struct objfile *);
6030 /* Function to be called whenever a new objfile (shlib) is detected. */
6032 remote_new_objfile (struct objfile *objfile)
6034 if (remote_desc != 0) /* Have a remote connection */
6036 remote_check_symbols (objfile);
6038 /* Call predecessor on chain, if any. */
6039 if (remote_new_objfile_chain != 0 &&
6041 remote_new_objfile_chain (objfile);
6045 _initialize_remote (void)
6047 static struct cmd_list_element *remote_set_cmdlist;
6048 static struct cmd_list_element *remote_show_cmdlist;
6049 struct cmd_list_element *tmpcmd;
6051 /* architecture specific data */
6052 remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state,
6055 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6056 that the remote protocol has been initialized. */
6057 register_gdbarch_swap (&remote_address_size,
6058 sizeof (&remote_address_size), NULL);
6059 register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data);
6062 add_target (&remote_ops);
6064 init_extended_remote_ops ();
6065 add_target (&extended_remote_ops);
6067 init_remote_async_ops ();
6068 add_target (&remote_async_ops);
6070 init_extended_async_remote_ops ();
6071 add_target (&extended_async_remote_ops);
6073 init_remote_cisco_ops ();
6074 add_target (&remote_cisco_ops);
6076 /* Hook into new objfile notification. */
6077 remote_new_objfile_chain = target_new_objfile_hook;
6078 target_new_objfile_hook = remote_new_objfile;
6081 init_remote_threadtests ();
6084 /* set/show remote ... */
6086 add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\
6087 Remote protocol specific variables\n\
6088 Configure various remote-protocol specific variables such as\n\
6089 the packets being used",
6090 &remote_set_cmdlist, "set remote ",
6091 0/*allow-unknown*/, &setlist);
6092 add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\
6093 Remote protocol specific variables\n\
6094 Configure various remote-protocol specific variables such as\n\
6095 the packets being used",
6096 &remote_show_cmdlist, "show remote ",
6097 0/*allow-unknown*/, &showlist);
6099 add_cmd ("compare-sections", class_obscure, compare_sections_command,
6100 "Compare section data on target to the exec file.\n\
6101 Argument is a single section name (default: all loaded sections).",
6104 add_cmd ("packet", class_maintenance, packet_command,
6105 "Send an arbitrary packet to a remote target.\n\
6106 maintenance packet TEXT\n\
6107 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6108 this command sends the string TEXT to the inferior, and displays the\n\
6109 response packet. GDB supplies the initial `$' character, and the\n\
6110 terminating `#' character and checksum.",
6113 add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break,
6114 "Set whether to send break if interrupted.\n",
6115 "Show whether to send break if interrupted.\n",
6117 &setlist, &showlist);
6119 /* Install commands for configuring memory read/write packets. */
6121 add_cmd ("remotewritesize", no_class, set_memory_write_packet_size,
6122 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6124 add_cmd ("remotewritesize", no_class, show_memory_write_packet_size,
6125 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6127 add_cmd ("memory-write-packet-size", no_class,
6128 set_memory_write_packet_size,
6129 "Set the maximum number of bytes per memory-write packet.\n"
6130 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6131 "default packet size. The actual limit is further reduced\n"
6132 "dependent on the target. Specify ``fixed'' to disable the\n"
6133 "further restriction and ``limit'' to enable that restriction\n",
6134 &remote_set_cmdlist);
6135 add_cmd ("memory-read-packet-size", no_class,
6136 set_memory_read_packet_size,
6137 "Set the maximum number of bytes per memory-read packet.\n"
6138 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6139 "default packet size. The actual limit is further reduced\n"
6140 "dependent on the target. Specify ``fixed'' to disable the\n"
6141 "further restriction and ``limit'' to enable that restriction\n",
6142 &remote_set_cmdlist);
6143 add_cmd ("memory-write-packet-size", no_class,
6144 show_memory_write_packet_size,
6145 "Show the maximum number of bytes per memory-write packet.\n",
6146 &remote_show_cmdlist);
6147 add_cmd ("memory-read-packet-size", no_class,
6148 show_memory_read_packet_size,
6149 "Show the maximum number of bytes per memory-read packet.\n",
6150 &remote_show_cmdlist);
6152 add_setshow_cmd ("hardware-watchpoint-limit", no_class,
6153 var_zinteger, &remote_hw_watchpoint_limit, "\
6154 Set the maximum number of target hardware watchpoints.\n\
6155 Specify a negative limit for unlimited.", "\
6156 Show the maximum number of target hardware watchpoints.\n",
6157 NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist);
6158 add_setshow_cmd ("hardware-breakpoint-limit", no_class,
6159 var_zinteger, &remote_hw_breakpoint_limit, "\
6160 Set the maximum number of target hardware breakpoints.\n\
6161 Specify a negative limit for unlimited.", "\
6162 Show the maximum number of target hardware breakpoints.\n",
6163 NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist);
6166 (add_set_cmd ("remoteaddresssize", class_obscure,
6167 var_integer, (char *) &remote_address_size,
6168 "Set the maximum size of the address (in bits) \
6169 in a memory packet.\n",
6173 add_packet_config_cmd (&remote_protocol_binary_download,
6174 "X", "binary-download",
6175 set_remote_protocol_binary_download_cmd,
6176 show_remote_protocol_binary_download_cmd,
6177 &remote_set_cmdlist, &remote_show_cmdlist,
6180 /* XXXX - should ``set remotebinarydownload'' be retained for
6183 (add_set_cmd ("remotebinarydownload", no_class,
6184 var_boolean, (char *) &remote_binary_download,
6185 "Set binary downloads.\n", &setlist),
6189 add_info ("remote-process", remote_info_process,
6190 "Query the remote system for process info.");
6192 add_packet_config_cmd (&remote_protocol_qSymbol,
6193 "qSymbol", "symbol-lookup",
6194 set_remote_protocol_qSymbol_packet_cmd,
6195 show_remote_protocol_qSymbol_packet_cmd,
6196 &remote_set_cmdlist, &remote_show_cmdlist,
6199 add_packet_config_cmd (&remote_protocol_e,
6200 "e", "step-over-range",
6201 set_remote_protocol_e_packet_cmd,
6202 show_remote_protocol_e_packet_cmd,
6203 &remote_set_cmdlist, &remote_show_cmdlist,
6205 /* Disable by default. The ``e'' packet has nasty interactions with
6206 the threading code - it relies on global state. */
6207 remote_protocol_e.detect = AUTO_BOOLEAN_FALSE;
6208 update_packet_config (&remote_protocol_e);
6210 add_packet_config_cmd (&remote_protocol_E,
6211 "E", "step-over-range-w-signal",
6212 set_remote_protocol_E_packet_cmd,
6213 show_remote_protocol_E_packet_cmd,
6214 &remote_set_cmdlist, &remote_show_cmdlist,
6216 /* Disable by default. The ``e'' packet has nasty interactions with
6217 the threading code - it relies on global state. */
6218 remote_protocol_E.detect = AUTO_BOOLEAN_FALSE;
6219 update_packet_config (&remote_protocol_E);
6221 add_packet_config_cmd (&remote_protocol_P,
6222 "P", "set-register",
6223 set_remote_protocol_P_packet_cmd,
6224 show_remote_protocol_P_packet_cmd,
6225 &remote_set_cmdlist, &remote_show_cmdlist,
6228 add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP],
6229 "Z0", "software-breakpoint",
6230 set_remote_protocol_Z_software_bp_packet_cmd,
6231 show_remote_protocol_Z_software_bp_packet_cmd,
6232 &remote_set_cmdlist, &remote_show_cmdlist,
6235 add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP],
6236 "Z1", "hardware-breakpoint",
6237 set_remote_protocol_Z_hardware_bp_packet_cmd,
6238 show_remote_protocol_Z_hardware_bp_packet_cmd,
6239 &remote_set_cmdlist, &remote_show_cmdlist,
6242 add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP],
6243 "Z2", "write-watchpoint",
6244 set_remote_protocol_Z_write_wp_packet_cmd,
6245 show_remote_protocol_Z_write_wp_packet_cmd,
6246 &remote_set_cmdlist, &remote_show_cmdlist,
6249 add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP],
6250 "Z3", "read-watchpoint",
6251 set_remote_protocol_Z_read_wp_packet_cmd,
6252 show_remote_protocol_Z_read_wp_packet_cmd,
6253 &remote_set_cmdlist, &remote_show_cmdlist,
6256 add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP],
6257 "Z4", "access-watchpoint",
6258 set_remote_protocol_Z_access_wp_packet_cmd,
6259 show_remote_protocol_Z_access_wp_packet_cmd,
6260 &remote_set_cmdlist, &remote_show_cmdlist,
6263 /* Keep the old ``set remote Z-packet ...'' working. */
6264 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure,
6265 &remote_Z_packet_detect, "\
6266 Set use of remote protocol `Z' packets",
6267 "Show use of remote protocol `Z' packets ",
6268 set_remote_protocol_Z_packet_cmd,
6269 show_remote_protocol_Z_packet_cmd,
6270 &remote_set_cmdlist, &remote_show_cmdlist);