1 /* Remote debugging interface for boot monitors, for GDB.
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
6 Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
7 Resurrected from the ashes by Stu Grossman.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* This file was derived from various remote-* modules. It is a collection
25 of generic support functions so GDB can talk directly to a ROM based
26 monitor. This saves use from having to hack an exception based handler
27 into existence, and makes for quick porting.
29 This module talks to a debug monitor called 'MONITOR', which
30 We communicate with MONITOR via either a direct serial line, or a TCP
31 (or possibly TELNET) stream to a terminal multiplexor,
32 which in turn talks to the target board. */
34 /* FIXME 32x64: This code assumes that registers and addresses are at
35 most 32 bits long. If they can be larger, you will need to declare
36 values as LONGEST and use %llx or some such to print values when
37 building commands to send to the monitor. Since we don't know of
38 any actual 64-bit targets with ROM monitors that use this code,
39 it's not an issue right now. -sts 4/18/96 */
44 #include "exceptions.h"
47 #include "gdb_string.h"
48 #include <sys/types.h>
54 #include "gdb_regex.h"
57 #include "gdbthread.h"
59 static char *dev_name;
60 static struct target_ops *targ_ops;
62 static void monitor_interrupt_query (void);
63 static void monitor_interrupt_twice (int);
64 static void monitor_stop (ptid_t);
65 static void monitor_dump_regs (struct regcache *regcache);
68 static int from_hex (int a);
71 static struct monitor_ops *current_monitor;
73 static int hashmark; /* flag set by "set hash" */
75 static int timeout = 30;
77 static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */
79 static void (*ofunc) (); /* Old SIGINT signal handler */
81 static CORE_ADDR *breakaddr;
83 /* Descriptor for I/O to remote machine. Initialize it to NULL so
84 that monitor_open knows that we don't have a file open when the
87 static struct serial *monitor_desc = NULL;
89 /* Pointer to regexp pattern matching data */
91 static struct re_pattern_buffer register_pattern;
92 static char register_fastmap[256];
94 static struct re_pattern_buffer getmem_resp_delim_pattern;
95 static char getmem_resp_delim_fastmap[256];
97 static struct re_pattern_buffer setmem_resp_delim_pattern;
98 static char setmem_resp_delim_fastmap[256];
100 static struct re_pattern_buffer setreg_resp_delim_pattern;
101 static char setreg_resp_delim_fastmap[256];
103 static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when
104 monitor_wait wakes up. */
106 static int first_time = 0; /* is this the first time we're executing after
107 gaving created the child proccess? */
110 /* This is the ptid we use while we're connected to a monitor. Its
111 value is arbitrary, as monitor targets don't have a notion of
112 processes or threads, but we need something non-null to place in
114 static ptid_t monitor_ptid;
116 #define TARGET_BUF_SIZE 2048
118 /* Monitor specific debugging information. Typically only useful to
119 the developer of a new monitor interface. */
121 static void monitor_debug (const char *fmt, ...) ATTR_FORMAT(printf, 1, 2);
123 static int monitor_debug_p = 0;
125 /* NOTE: This file alternates between monitor_debug_p and remote_debug
126 when determining if debug information is printed. Perhaps this
127 could be simplified. */
130 monitor_debug (const char *fmt, ...)
135 va_start (args, fmt);
136 vfprintf_filtered (gdb_stdlog, fmt, args);
142 /* Convert a string into a printable representation, Return # byte in
143 the new string. When LEN is >0 it specifies the size of the
144 string. Otherwize strlen(oldstr) is used. */
147 monitor_printable_string (char *newstr, char *oldstr, int len)
153 len = strlen (oldstr);
155 for (i = 0; i < len; i++)
166 sprintf (newstr, "\\x%02x", ch & 0xff);
205 /* Print monitor errors with a string, converting the string to printable
209 monitor_error (char *function, char *message,
210 CORE_ADDR memaddr, int len, char *string, int final_char)
212 int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len;
213 char *safe_string = alloca ((real_len * 4) + 1);
214 monitor_printable_string (safe_string, string, real_len);
217 error (_("%s (0x%s): %s: %s%c"), function, paddr_nz (memaddr), message, safe_string, final_char);
219 error (_("%s (0x%s): %s: %s"), function, paddr_nz (memaddr), message, safe_string);
222 /* Convert hex digit A to a number. */
227 if (a >= '0' && a <= '9')
229 else if (a >= 'a' && a <= 'f')
231 else if (a >= 'A' && a <= 'F')
234 error (_("Invalid hex digit %d"), a);
237 /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses
239 This function exists to get around the problem that many host platforms
240 don't have a printf that can print 64-bit addresses. The %A format
241 specification is recognized as a special case, and causes the argument
242 to be printed as a 64-bit hexadecimal address.
244 Only format specifiers of the form "[0-9]*[a-z]" are recognized.
245 If it is a '%s' format, the argument is a string; otherwise the
246 argument is assumed to be a long integer.
248 %% is also turned into a single %.
252 monitor_vsprintf (char *sndbuf, char *pattern, va_list args)
262 for (p = pattern; *p; p++)
266 /* Copy the format specifier to a separate buffer. */
268 for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2;
271 format[i] = fmt = *p;
272 format[i + 1] = '\0';
274 /* Fetch the next argument and print it. */
278 strcpy (sndbuf, "%");
281 arg_addr = va_arg (args, CORE_ADDR);
282 strcpy (sndbuf, paddr_nz (arg_addr));
285 arg_string = va_arg (args, char *);
286 sprintf (sndbuf, format, arg_string);
289 arg_int = va_arg (args, long);
290 sprintf (sndbuf, format, arg_int);
293 sndbuf += strlen (sndbuf);
302 /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo.
303 Works just like printf. */
306 monitor_printf_noecho (char *pattern,...)
312 va_start (args, pattern);
314 monitor_vsprintf (sndbuf, pattern, args);
316 len = strlen (sndbuf);
317 if (len + 1 > sizeof sndbuf)
318 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
322 char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1);
323 monitor_printable_string (safe_string, sndbuf, 0);
324 fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string);
327 monitor_write (sndbuf, len);
330 /* monitor_printf -- Send data to monitor and check the echo. Works just like
334 monitor_printf (char *pattern,...)
340 va_start (args, pattern);
342 monitor_vsprintf (sndbuf, pattern, args);
344 len = strlen (sndbuf);
345 if (len + 1 > sizeof sndbuf)
346 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
350 char *safe_string = (char *) alloca ((len * 4) + 1);
351 monitor_printable_string (safe_string, sndbuf, 0);
352 fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string);
355 monitor_write (sndbuf, len);
357 /* We used to expect that the next immediate output was the characters we
358 just output, but sometimes some extra junk appeared before the characters
359 we expected, like an extra prompt, or a portmaster sending telnet negotiations.
360 So, just start searching for what we sent, and skip anything unknown. */
361 monitor_debug ("ExpectEcho\n");
362 monitor_expect (sndbuf, (char *) 0, 0);
366 /* Write characters to the remote system. */
369 monitor_write (char *buf, int buflen)
371 if (serial_write (monitor_desc, buf, buflen))
372 fprintf_unfiltered (gdb_stderr, "serial_write failed: %s\n",
373 safe_strerror (errno));
377 /* Read a binary character from the remote system, doing all the fancy
378 timeout stuff, but without interpreting the character in any way,
379 and without printing remote debug information. */
382 monitor_readchar (void)
390 c = serial_readchar (monitor_desc, timeout);
393 c &= 0xff; /* don't lose bit 7 */
400 if (c == SERIAL_TIMEOUT)
401 error (_("Timeout reading from remote system."));
403 perror_with_name (_("remote-monitor"));
407 /* Read a character from the remote system, doing all the fancy
411 readchar (int timeout)
416 last_random, last_nl, last_cr, last_crnl
424 c = serial_readchar (monitor_desc, timeout);
429 /* This seems to interfere with proper function of the
431 if (monitor_debug_p || remote_debug)
436 puts_debug ("read -->", buf, "<--");
441 /* Canonicialize \n\r combinations into one \r */
442 if ((current_monitor->flags & MO_HANDLE_NL) != 0)
444 if ((c == '\r' && state == last_nl)
445 || (c == '\n' && state == last_cr))
466 if (c == SERIAL_TIMEOUT)
468 /* I fail to see how detaching here can be useful */
469 if (in_monitor_wait) /* Watchdog went off */
471 target_mourn_inferior ();
472 error (_("GDB serial timeout has expired. Target detached."));
476 error (_("Timeout reading from remote system."));
478 perror_with_name (_("remote-monitor"));
481 /* Scan input from the remote system, until STRING is found. If BUF is non-
482 zero, then collect input until we have collected either STRING or BUFLEN-1
483 chars. In either case we terminate BUF with a 0. If input overflows BUF
484 because STRING can't be found, return -1, else return number of chars in BUF
485 (minus the terminating NUL). Note that in the non-overflow case, STRING
486 will be at the end of BUF. */
489 monitor_expect (char *string, char *buf, int buflen)
492 int obuflen = buflen;
497 char *safe_string = (char *) alloca ((strlen (string) * 4) + 1);
498 monitor_printable_string (safe_string, string, 0);
499 fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string);
514 c = readchar (timeout);
521 c = readchar (timeout);
523 /* Don't expect any ^C sent to be echoed */
525 if (*p == '\003' || c == *p)
535 return obuflen - buflen;
543 /* We got a character that doesn't match the string. We need to
544 back up p, but how far? If we're looking for "..howdy" and the
545 monitor sends "...howdy"? There's certainly a match in there,
546 but when we receive the third ".", we won't find it if we just
547 restart the matching at the beginning of the string.
549 This is a Boyer-Moore kind of situation. We want to reset P to
550 the end of the longest prefix of STRING that is a suffix of
551 what we've read so far. In the example above, that would be
552 ".." --- the longest prefix of "..howdy" that is a suffix of
553 "...". This longest prefix could be the empty string, if C
554 is nowhere to be found in STRING.
556 If this longest prefix is not the empty string, it must contain
557 C, so let's search from the end of STRING for instances of C,
558 and see if the portion of STRING before that is a suffix of
559 what we read before C. Actually, we can search backwards from
560 p, since we know no prefix can be longer than that.
562 Note that we can use STRING itself, along with C, as a record
563 of what we've received so far. :) */
566 for (i = (p - string) - 1; i >= 0; i--)
569 /* Is this prefix a suffix of what we've read so far?
571 string[0 .. i-1] == string[p - i, p - 1]? */
572 if (! memcmp (string, p - i, i))
584 /* Search for a regexp. */
587 monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen)
591 monitor_debug ("MON Expecting regexp\n");
596 mybuf = alloca (TARGET_BUF_SIZE);
597 buflen = TARGET_BUF_SIZE;
605 if (p - mybuf >= buflen)
606 { /* Buffer about to overflow */
608 /* On overflow, we copy the upper half of the buffer to the lower half. Not
609 great, but it usually works... */
611 memcpy (mybuf, mybuf + buflen / 2, buflen / 2);
612 p = mybuf + buflen / 2;
615 *p++ = readchar (timeout);
617 retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL);
623 /* Keep discarding input until we see the MONITOR prompt.
625 The convention for dealing with the prompt is that you
627 o *then* wait for the prompt.
629 Thus the last thing that a procedure does with the serial line will
630 be an monitor_expect_prompt(). Exception: monitor_resume does not
631 wait for the prompt, because the terminal is being handed over to
632 the inferior. However, the next thing which happens after that is
633 a monitor_wait which does wait for the prompt. Note that this
634 includes abnormal exit, e.g. error(). This is necessary to prevent
635 getting into states from which we can't recover. */
638 monitor_expect_prompt (char *buf, int buflen)
640 monitor_debug ("MON Expecting prompt\n");
641 return monitor_expect (current_monitor->prompt, buf, buflen);
644 /* Get N 32-bit words from remote, each preceded by a space, and put
645 them in registers starting at REGNO. */
656 ch = readchar (timeout);
657 while (isspace (ch));
661 for (i = 7; i >= 1; i--)
663 ch = readchar (timeout);
666 val = (val << 4) | from_hex (ch);
674 compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern,
680 compiled_pattern->fastmap = fastmap;
682 tmp = re_set_syntax (RE_SYNTAX_EMACS);
683 val = re_compile_pattern (pattern,
689 error (_("compile_pattern: Can't compile pattern string `%s': %s!"), pattern, val);
692 re_compile_fastmap (compiled_pattern);
695 /* Open a connection to a remote debugger. NAME is the filename used
696 for communication. */
699 monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty)
704 if (mon_ops->magic != MONITOR_OPS_MAGIC)
705 error (_("Magic number of monitor_ops struct wrong."));
707 targ_ops = mon_ops->target;
708 name = targ_ops->to_shortname;
711 error (_("Use `target %s DEVICE-NAME' to use a serial port, or \n\
712 `target %s HOST-NAME:PORT-NUMBER' to use a network connection."), name, name);
714 target_preopen (from_tty);
716 /* Setup pattern for register dump */
718 if (mon_ops->register_pattern)
719 compile_pattern (mon_ops->register_pattern, ®ister_pattern,
722 if (mon_ops->getmem.resp_delim)
723 compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern,
724 getmem_resp_delim_fastmap);
726 if (mon_ops->setmem.resp_delim)
727 compile_pattern (mon_ops->setmem.resp_delim, &setmem_resp_delim_pattern,
728 setmem_resp_delim_fastmap);
730 if (mon_ops->setreg.resp_delim)
731 compile_pattern (mon_ops->setreg.resp_delim, &setreg_resp_delim_pattern,
732 setreg_resp_delim_fastmap);
734 unpush_target (targ_ops);
738 dev_name = xstrdup (args);
740 monitor_desc = serial_open (dev_name);
743 perror_with_name (dev_name);
747 if (serial_setbaudrate (monitor_desc, baud_rate))
749 serial_close (monitor_desc);
750 perror_with_name (dev_name);
754 serial_raw (monitor_desc);
756 serial_flush_input (monitor_desc);
758 /* some systems only work with 2 stop bits */
760 serial_setstopbits (monitor_desc, mon_ops->stopbits);
762 current_monitor = mon_ops;
764 /* See if we can wake up the monitor. First, try sending a stop sequence,
765 then send the init strings. Last, remove all breakpoints. */
767 if (current_monitor->stop)
769 monitor_stop (inferior_ptid);
770 if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0)
772 monitor_debug ("EXP Open echo\n");
773 monitor_expect_prompt (NULL, 0);
777 /* wake up the monitor and see if it's alive */
778 for (p = mon_ops->init; *p != NULL; p++)
780 /* Some of the characters we send may not be echoed,
781 but we hope to get a prompt at the end of it all. */
783 if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0)
786 monitor_printf_noecho (*p);
787 monitor_expect_prompt (NULL, 0);
790 serial_flush_input (monitor_desc);
792 /* Alloc breakpoints */
793 if (mon_ops->set_break != NULL)
795 if (mon_ops->num_breakpoints == 0)
796 mon_ops->num_breakpoints = 8;
798 breakaddr = (CORE_ADDR *) xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR));
799 memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR));
802 /* Remove all breakpoints */
804 if (mon_ops->clr_all_break)
806 monitor_printf (mon_ops->clr_all_break);
807 monitor_expect_prompt (NULL, 0);
811 printf_unfiltered (_("Remote target %s connected to %s\n"), name, dev_name);
813 push_target (targ_ops);
818 /* Make run command think we are busy... */
819 inferior_ptid = monitor_ptid;
820 add_inferior_silent (ptid_get_pid (inferior_ptid));
821 add_thread_silent (inferior_ptid);
823 /* Give monitor_wait something to read */
825 monitor_printf (current_monitor->line_term);
827 start_remote (from_tty);
830 /* Close out all files and local state before this target loses
834 monitor_close (int quitting)
837 serial_close (monitor_desc);
839 /* Free breakpoint memory */
840 if (breakaddr != NULL)
848 delete_thread_silent (monitor_ptid);
849 delete_inferior_silent (ptid_get_pid (monitor_ptid));
852 /* Terminate the open connection to the remote debugger. Use this
853 when you want to detach and do something else with your gdb. */
856 monitor_detach (struct target_ops *ops, char *args, int from_tty)
858 pop_target (); /* calls monitor_close to do the real work */
860 printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname);
863 /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
866 monitor_supply_register (struct regcache *regcache, int regno, char *valstr)
869 unsigned char regbuf[MAX_REGISTER_SIZE];
874 while (p && *p != '\0')
876 if (*p == '\r' || *p == '\n')
887 if (!isxdigit (*p) && *p != 'x')
893 val += fromhex (*p++);
895 monitor_debug ("Supplying Register %d %s\n", regno, valstr);
897 if (val == 0 && valstr == p)
898 error (_("monitor_supply_register (%d): bad value from monitor: %s."),
901 /* supply register stores in target byte order, so swap here */
903 store_unsigned_integer (regbuf,
904 register_size (get_regcache_arch (regcache), regno),
907 regcache_raw_supply (regcache, regno, regbuf);
912 /* Tell the remote machine to resume. */
915 monitor_resume (struct target_ops *ops,
916 ptid_t ptid, int step, enum target_signal sig)
918 /* Some monitors require a different command when starting a program */
919 monitor_debug ("MON resume\n");
920 if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1)
923 monitor_printf ("run\r");
924 if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT)
929 monitor_printf (current_monitor->step);
932 if (current_monitor->continue_hook)
933 (*current_monitor->continue_hook) ();
935 monitor_printf (current_monitor->cont);
936 if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT)
941 /* Parse the output of a register dump command. A monitor specific
942 regexp is used to extract individual register descriptions of the
943 form REG=VAL. Each description is split up into a name and a value
944 string which are passed down to monitor specific code. */
947 parse_register_dump (struct regcache *regcache, char *buf, int len)
949 monitor_debug ("MON Parsing register dump\n");
952 int regnamelen, vallen;
954 /* Element 0 points to start of register name, and element 1
955 points to the start of the register value. */
956 struct re_registers register_strings;
958 memset (®ister_strings, 0, sizeof (struct re_registers));
960 if (re_search (®ister_pattern, buf, len, 0, len,
961 ®ister_strings) == -1)
964 regnamelen = register_strings.end[1] - register_strings.start[1];
965 regname = buf + register_strings.start[1];
966 vallen = register_strings.end[2] - register_strings.start[2];
967 val = buf + register_strings.start[2];
969 current_monitor->supply_register (regcache, regname, regnamelen,
972 buf += register_strings.end[0];
973 len -= register_strings.end[0];
977 /* Send ^C to target to halt it. Target will respond, and send us a
981 monitor_interrupt (int signo)
983 /* If this doesn't work, try more severe steps. */
984 signal (signo, monitor_interrupt_twice);
986 if (monitor_debug_p || remote_debug)
987 fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n");
989 target_stop (inferior_ptid);
992 /* The user typed ^C twice. */
995 monitor_interrupt_twice (int signo)
997 signal (signo, ofunc);
999 monitor_interrupt_query ();
1001 signal (signo, monitor_interrupt);
1004 /* Ask the user what to do when an interrupt is received. */
1007 monitor_interrupt_query (void)
1009 target_terminal_ours ();
1011 if (query (_("Interrupted while waiting for the program.\n\
1012 Give up (and stop debugging it)? ")))
1014 target_mourn_inferior ();
1015 deprecated_throw_reason (RETURN_QUIT);
1018 target_terminal_inferior ();
1022 monitor_wait_cleanup (void *old_timeout)
1024 timeout = *(int *) old_timeout;
1025 signal (SIGINT, ofunc);
1026 in_monitor_wait = 0;
1032 monitor_wait_filter (char *buf,
1035 struct target_waitstatus *status)
1040 resp_len = monitor_expect_prompt (buf, bufmax);
1041 *ext_resp_len = resp_len;
1044 fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf);
1046 while (resp_len < 0);
1048 /* Print any output characters that were preceded by ^O. */
1049 /* FIXME - This would be great as a user settabgle flag */
1050 if (monitor_debug_p || remote_debug
1051 || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT)
1055 for (i = 0; i < resp_len - 1; i++)
1057 putchar_unfiltered (buf[++i]);
1063 /* Wait until the remote machine stops, then return, storing status in
1064 status just as `wait' would. */
1067 monitor_wait (struct target_ops *ops,
1068 ptid_t ptid, struct target_waitstatus *status)
1070 int old_timeout = timeout;
1071 char buf[TARGET_BUF_SIZE];
1073 struct cleanup *old_chain;
1075 status->kind = TARGET_WAITKIND_EXITED;
1076 status->value.integer = 0;
1078 old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout);
1079 monitor_debug ("MON wait\n");
1082 /* This is somthing other than a maintenance command */
1083 in_monitor_wait = 1;
1084 timeout = watchdog > 0 ? watchdog : -1;
1086 timeout = -1; /* Don't time out -- user program is running. */
1089 ofunc = (void (*)()) signal (SIGINT, monitor_interrupt);
1091 if (current_monitor->wait_filter)
1092 (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status);
1094 monitor_wait_filter (buf, sizeof (buf), &resp_len, status);
1096 #if 0 /* Transferred to monitor wait filter */
1099 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1102 fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf);
1104 while (resp_len < 0);
1106 /* Print any output characters that were preceded by ^O. */
1107 /* FIXME - This would be great as a user settabgle flag */
1108 if (monitor_debug_p || remote_debug
1109 || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT)
1113 for (i = 0; i < resp_len - 1; i++)
1115 putchar_unfiltered (buf[++i]);
1119 signal (SIGINT, ofunc);
1121 timeout = old_timeout;
1123 if (dump_reg_flag && current_monitor->dump_registers)
1126 monitor_printf (current_monitor->dump_registers);
1127 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1130 if (current_monitor->register_pattern)
1131 parse_register_dump (get_current_regcache (), buf, resp_len);
1133 monitor_debug ("Wait fetching registers after stop\n");
1134 monitor_dump_regs (get_current_regcache ());
1137 status->kind = TARGET_WAITKIND_STOPPED;
1138 status->value.sig = TARGET_SIGNAL_TRAP;
1140 discard_cleanups (old_chain);
1142 in_monitor_wait = 0;
1144 return inferior_ptid;
1147 /* Fetch register REGNO, or all registers if REGNO is -1. Returns
1151 monitor_fetch_register (struct regcache *regcache, int regno)
1158 regbuf = alloca (MAX_REGISTER_SIZE * 2 + 1);
1159 zerobuf = alloca (MAX_REGISTER_SIZE);
1160 memset (zerobuf, 0, MAX_REGISTER_SIZE);
1162 if (current_monitor->regname != NULL)
1163 name = current_monitor->regname (regno);
1165 name = current_monitor->regnames[regno];
1166 monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)");
1168 if (!name || (*name == '\0'))
1170 monitor_debug ("No register known for %d\n", regno);
1171 regcache_raw_supply (regcache, regno, zerobuf);
1175 /* send the register examine command */
1177 monitor_printf (current_monitor->getreg.cmd, name);
1179 /* If RESP_DELIM is specified, we search for that as a leading
1180 delimiter for the register value. Otherwise, we just start
1181 searching from the start of the buf. */
1183 if (current_monitor->getreg.resp_delim)
1185 monitor_debug ("EXP getreg.resp_delim\n");
1186 monitor_expect (current_monitor->getreg.resp_delim, NULL, 0);
1187 /* Handle case of first 32 registers listed in pairs. */
1188 if (current_monitor->flags & MO_32_REGS_PAIRED
1189 && (regno & 1) != 0 && regno < 32)
1191 monitor_debug ("EXP getreg.resp_delim\n");
1192 monitor_expect (current_monitor->getreg.resp_delim, NULL, 0);
1196 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */
1197 if (current_monitor->flags & MO_HEX_PREFIX)
1200 c = readchar (timeout);
1202 c = readchar (timeout);
1203 if ((c == '0') && ((c = readchar (timeout)) == 'x'))
1206 error (_("Bad value returned from monitor while fetching register %x."),
1210 /* Read upto the maximum number of hex digits for this register, skipping
1211 spaces, but stop reading if something else is seen. Some monitors
1212 like to drop leading zeros. */
1214 for (i = 0; i < register_size (get_regcache_arch (regcache), regno) * 2; i++)
1217 c = readchar (timeout);
1219 c = readchar (timeout);
1227 regbuf[i] = '\000'; /* terminate the number */
1228 monitor_debug ("REGVAL '%s'\n", regbuf);
1230 /* If TERM is present, we wait for that to show up. Also, (if TERM
1231 is present), we will send TERM_CMD if that is present. In any
1232 case, we collect all of the output into buf, and then wait for
1233 the normal prompt. */
1235 if (current_monitor->getreg.term)
1237 monitor_debug ("EXP getreg.term\n");
1238 monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */
1241 if (current_monitor->getreg.term_cmd)
1243 monitor_debug ("EMIT getreg.term.cmd\n");
1244 monitor_printf (current_monitor->getreg.term_cmd);
1246 if (!current_monitor->getreg.term || /* Already expected or */
1247 current_monitor->getreg.term_cmd) /* ack expected */
1248 monitor_expect_prompt (NULL, 0); /* get response */
1250 monitor_supply_register (regcache, regno, regbuf);
1253 /* Sometimes, it takes several commands to dump the registers */
1254 /* This is a primitive for use by variations of monitor interfaces in
1255 case they need to compose the operation.
1258 monitor_dump_reg_block (struct regcache *regcache, char *block_cmd)
1260 char buf[TARGET_BUF_SIZE];
1262 monitor_printf (block_cmd);
1263 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1264 parse_register_dump (regcache, buf, resp_len);
1269 /* Read the remote registers into the block regs. */
1270 /* Call the specific function if it has been provided */
1273 monitor_dump_regs (struct regcache *regcache)
1275 char buf[TARGET_BUF_SIZE];
1277 if (current_monitor->dumpregs)
1278 (*(current_monitor->dumpregs)) (regcache); /* call supplied function */
1279 else if (current_monitor->dump_registers) /* default version */
1281 monitor_printf (current_monitor->dump_registers);
1282 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1283 parse_register_dump (regcache, buf, resp_len);
1286 internal_error (__FILE__, __LINE__, _("failed internal consistency check")); /* Need some way to read registers */
1290 monitor_fetch_registers (struct target_ops *ops,
1291 struct regcache *regcache, int regno)
1293 monitor_debug ("MON fetchregs\n");
1294 if (current_monitor->getreg.cmd)
1298 monitor_fetch_register (regcache, regno);
1302 for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache));
1304 monitor_fetch_register (regcache, regno);
1308 monitor_dump_regs (regcache);
1312 /* Store register REGNO, or all if REGNO == 0. Return errno value. */
1315 monitor_store_register (struct regcache *regcache, int regno)
1320 if (current_monitor->regname != NULL)
1321 name = current_monitor->regname (regno);
1323 name = current_monitor->regnames[regno];
1325 if (!name || (*name == '\0'))
1327 monitor_debug ("MON Cannot store unknown register\n");
1331 regcache_cooked_read_unsigned (regcache, regno, &val);
1332 monitor_debug ("MON storeg %d %s\n", regno,
1334 register_size (get_regcache_arch (regcache), regno)));
1336 /* send the register deposit command */
1338 if (current_monitor->flags & MO_REGISTER_VALUE_FIRST)
1339 monitor_printf (current_monitor->setreg.cmd, val, name);
1340 else if (current_monitor->flags & MO_SETREG_INTERACTIVE)
1341 monitor_printf (current_monitor->setreg.cmd, name);
1343 monitor_printf (current_monitor->setreg.cmd, name, val);
1345 if (current_monitor->setreg.resp_delim)
1347 monitor_debug ("EXP setreg.resp_delim\n");
1348 monitor_expect_regexp (&setreg_resp_delim_pattern, NULL, 0);
1349 if (current_monitor->flags & MO_SETREG_INTERACTIVE)
1350 monitor_printf ("%s\r", paddr_nz (val));
1352 if (current_monitor->setreg.term)
1354 monitor_debug ("EXP setreg.term\n");
1355 monitor_expect (current_monitor->setreg.term, NULL, 0);
1356 if (current_monitor->flags & MO_SETREG_INTERACTIVE)
1357 monitor_printf ("%s\r", paddr_nz (val));
1358 monitor_expect_prompt (NULL, 0);
1361 monitor_expect_prompt (NULL, 0);
1362 if (current_monitor->setreg.term_cmd) /* Mode exit required */
1364 monitor_debug ("EXP setreg_termcmd\n");
1365 monitor_printf ("%s", current_monitor->setreg.term_cmd);
1366 monitor_expect_prompt (NULL, 0);
1368 } /* monitor_store_register */
1370 /* Store the remote registers. */
1373 monitor_store_registers (struct target_ops *ops,
1374 struct regcache *regcache, int regno)
1378 monitor_store_register (regcache, regno);
1382 for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache));
1384 monitor_store_register (regcache, regno);
1387 /* Get ready to modify the registers array. On machines which store
1388 individual registers, this doesn't need to do anything. On machines
1389 which store all the registers in one fell swoop, this makes sure
1390 that registers contains all the registers from the program being
1394 monitor_prepare_to_store (struct regcache *regcache)
1396 /* Do nothing, since we can store individual regs */
1400 monitor_files_info (struct target_ops *ops)
1402 printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name, baud_rate);
1406 monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len)
1408 unsigned int val, hostval;
1412 monitor_debug ("MON write %d %s\n", len, paddr (memaddr));
1414 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
1415 memaddr = gdbarch_addr_bits_remove (current_gdbarch, memaddr);
1417 /* Use memory fill command for leading 0 bytes. */
1419 if (current_monitor->fill)
1421 for (i = 0; i < len; i++)
1425 if (i > 4) /* More than 4 zeros is worth doing */
1427 monitor_debug ("MON FILL %d\n", i);
1428 if (current_monitor->flags & MO_FILL_USES_ADDR)
1429 monitor_printf (current_monitor->fill, memaddr, (memaddr + i) - 1, 0);
1431 monitor_printf (current_monitor->fill, memaddr, i, 0);
1433 monitor_expect_prompt (NULL, 0);
1440 /* Can't actually use long longs if VAL is an int (nice idea, though). */
1441 if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll)
1444 cmd = current_monitor->setmem.cmdll;
1448 if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl)
1451 cmd = current_monitor->setmem.cmdl;
1453 else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw)
1456 cmd = current_monitor->setmem.cmdw;
1461 cmd = current_monitor->setmem.cmdb;
1464 val = extract_unsigned_integer (myaddr, len);
1468 hostval = *(unsigned int *) myaddr;
1469 monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val);
1473 if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM)
1474 monitor_printf_noecho (cmd, memaddr, val);
1475 else if (current_monitor->flags & MO_SETMEM_INTERACTIVE)
1478 monitor_printf_noecho (cmd, memaddr);
1480 if (current_monitor->setmem.resp_delim)
1482 monitor_debug ("EXP setmem.resp_delim");
1483 monitor_expect_regexp (&setmem_resp_delim_pattern, NULL, 0);
1484 monitor_printf ("%x\r", val);
1486 if (current_monitor->setmem.term)
1488 monitor_debug ("EXP setmem.term");
1489 monitor_expect (current_monitor->setmem.term, NULL, 0);
1490 monitor_printf ("%x\r", val);
1492 if (current_monitor->setmem.term_cmd)
1493 { /* Emit this to get out of the memory editing state */
1494 monitor_printf ("%s", current_monitor->setmem.term_cmd);
1495 /* Drop through to expecting a prompt */
1499 monitor_printf (cmd, memaddr, val);
1501 monitor_expect_prompt (NULL, 0);
1508 monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len)
1514 /* Enter the sub mode */
1515 monitor_printf (current_monitor->setmem.cmdb, memaddr);
1516 monitor_expect_prompt (NULL, 0);
1520 monitor_printf ("%x\r", val);
1524 /* If we wanted to, here we could validate the address */
1525 monitor_expect_prompt (NULL, 0);
1528 /* Now exit the sub mode */
1529 monitor_printf (current_monitor->getreg.term_cmd);
1530 monitor_expect_prompt (NULL, 0);
1536 longlongendswap (unsigned char *a)
1545 *(a + i) = *(a + j);
1550 /* Format 32 chars of long long value, advance the pointer */
1551 static char *hexlate = "0123456789abcdef";
1553 longlong_hexchars (unsigned long long value,
1563 static unsigned char disbuf[8]; /* disassembly buffer */
1564 unsigned char *scan, *limit; /* loop controls */
1565 unsigned char c, nib;
1570 unsigned long long *dp;
1571 dp = (unsigned long long *) scan;
1574 longlongendswap (disbuf); /* FIXME: ONly on big endian hosts */
1575 while (scan < limit)
1577 c = *scan++; /* a byte of our long long value */
1583 leadzero = 0; /* henceforth we print even zeroes */
1585 nib = c >> 4; /* high nibble bits */
1586 *outbuff++ = hexlate[nib];
1587 nib = c & 0x0f; /* low nibble bits */
1588 *outbuff++ = hexlate[nib];
1592 } /* longlong_hexchars */
1596 /* I am only going to call this when writing virtual byte streams.
1597 Which possably entails endian conversions
1600 monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len)
1602 static char hexstage[20]; /* At least 16 digits required, plus null */
1607 llptr = (unsigned long long *) myaddr;
1610 monitor_printf (current_monitor->setmem.cmdll, memaddr);
1611 monitor_expect_prompt (NULL, 0);
1615 endstring = longlong_hexchars (*llptr, hexstage);
1616 *endstring = '\0'; /* NUll terminate for printf */
1617 monitor_printf ("%s\r", hexstage);
1621 /* If we wanted to, here we could validate the address */
1622 monitor_expect_prompt (NULL, 0);
1625 /* Now exit the sub mode */
1626 monitor_printf (current_monitor->getreg.term_cmd);
1627 monitor_expect_prompt (NULL, 0);
1633 /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
1634 /* This is for the large blocks of memory which may occur in downloading.
1635 And for monitors which use interactive entry,
1636 And for monitors which do not have other downloading methods.
1637 Without this, we will end up calling monitor_write_memory many times
1638 and do the entry and exit of the sub mode many times
1639 This currently assumes...
1640 MO_SETMEM_INTERACTIVE
1641 ! MO_NO_ECHO_ON_SETMEM
1642 To use this, the you have to patch the monitor_cmds block with
1643 this function. Otherwise, its not tuned up for use by all
1648 monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len)
1652 /* FIXME: This would be a good place to put the zero test */
1654 if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll)
1656 return monitor_write_memory_longlongs (memaddr, myaddr, len);
1659 written = monitor_write_memory_bytes (memaddr, myaddr, len);
1663 /* This is an alternate form of monitor_read_memory which is used for monitors
1664 which can only read a single byte/word/etc. at a time. */
1667 monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len)
1670 char membuf[sizeof (int) * 2 + 1];
1674 monitor_debug ("MON read single\n");
1676 /* Can't actually use long longs (nice idea, though). In fact, the
1677 call to strtoul below will fail if it tries to convert a value
1678 that's too big to fit in a long. */
1679 if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll)
1682 cmd = current_monitor->getmem.cmdll;
1686 if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl)
1689 cmd = current_monitor->getmem.cmdl;
1691 else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw)
1694 cmd = current_monitor->getmem.cmdw;
1699 cmd = current_monitor->getmem.cmdb;
1702 /* Send the examine command. */
1704 monitor_printf (cmd, memaddr);
1706 /* If RESP_DELIM is specified, we search for that as a leading
1707 delimiter for the memory value. Otherwise, we just start
1708 searching from the start of the buf. */
1710 if (current_monitor->getmem.resp_delim)
1712 monitor_debug ("EXP getmem.resp_delim\n");
1713 monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0);
1716 /* Now, read the appropriate number of hex digits for this loc,
1719 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1720 if (current_monitor->flags & MO_HEX_PREFIX)
1724 c = readchar (timeout);
1726 c = readchar (timeout);
1727 if ((c == '0') && ((c = readchar (timeout)) == 'x'))
1730 monitor_error ("monitor_read_memory_single",
1731 "bad response from monitor",
1732 memaddr, 0, NULL, 0);
1737 for (i = 0; i < len * 2; i++)
1743 c = readchar (timeout);
1749 monitor_error ("monitor_read_memory_single",
1750 "bad response from monitor",
1751 memaddr, i, membuf, 0);
1755 membuf[i] = '\000'; /* terminate the number */
1758 /* If TERM is present, we wait for that to show up. Also, (if TERM is
1759 present), we will send TERM_CMD if that is present. In any case, we collect
1760 all of the output into buf, and then wait for the normal prompt. */
1762 if (current_monitor->getmem.term)
1764 monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */
1766 if (current_monitor->getmem.term_cmd)
1768 monitor_printf (current_monitor->getmem.term_cmd);
1769 monitor_expect_prompt (NULL, 0);
1773 monitor_expect_prompt (NULL, 0); /* get response */
1776 val = strtoul (membuf, &p, 16);
1778 if (val == 0 && membuf == p)
1779 monitor_error ("monitor_read_memory_single",
1780 "bad value from monitor",
1781 memaddr, 0, membuf, 0);
1783 /* supply register stores in target byte order, so swap here */
1785 store_unsigned_integer (myaddr, len, val);
1790 /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
1791 memory at MEMADDR. Returns length moved. Currently, we do no more
1792 than 16 bytes at a time. */
1795 monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
1806 monitor_debug ("Zero length call to monitor_read_memory\n");
1810 monitor_debug ("MON read block ta(%s) ha(%lx) %d\n",
1811 paddr_nz (memaddr), (long) myaddr, len);
1813 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
1814 memaddr = gdbarch_addr_bits_remove (current_gdbarch, memaddr);
1816 if (current_monitor->flags & MO_GETMEM_READ_SINGLE)
1817 return monitor_read_memory_single (memaddr, myaddr, len);
1819 len = min (len, 16);
1821 /* Some dumpers align the first data with the preceeding 16
1822 byte boundary. Some print blanks and start at the
1823 requested boundary. EXACT_DUMPADDR
1826 dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR)
1827 ? memaddr : memaddr & ~0x0f;
1829 /* See if xfer would cross a 16 byte boundary. If so, clip it. */
1830 if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0)
1831 len = ((memaddr + len) & ~0xf) - memaddr;
1833 /* send the memory examine command */
1835 if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE)
1836 monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len);
1837 else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY)
1838 monitor_printf (current_monitor->getmem.cmdb, dumpaddr);
1840 monitor_printf (current_monitor->getmem.cmdb, memaddr, len);
1842 /* If TERM is present, we wait for that to show up. Also, (if TERM
1843 is present), we will send TERM_CMD if that is present. In any
1844 case, we collect all of the output into buf, and then wait for
1845 the normal prompt. */
1847 if (current_monitor->getmem.term)
1849 resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */
1852 monitor_error ("monitor_read_memory",
1853 "excessive response from monitor",
1854 memaddr, resp_len, buf, 0);
1856 if (current_monitor->getmem.term_cmd)
1858 serial_write (monitor_desc, current_monitor->getmem.term_cmd,
1859 strlen (current_monitor->getmem.term_cmd));
1860 monitor_expect_prompt (NULL, 0);
1864 resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */
1868 /* If RESP_DELIM is specified, we search for that as a leading
1869 delimiter for the values. Otherwise, we just start searching
1870 from the start of the buf. */
1872 if (current_monitor->getmem.resp_delim)
1875 struct re_registers resp_strings;
1876 monitor_debug ("MON getmem.resp_delim %s\n", current_monitor->getmem.resp_delim);
1878 memset (&resp_strings, 0, sizeof (struct re_registers));
1880 retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp,
1884 monitor_error ("monitor_read_memory",
1885 "bad response from monitor",
1886 memaddr, resp_len, buf, 0);
1888 p += resp_strings.end[0];
1890 p = strstr (p, current_monitor->getmem.resp_delim);
1892 monitor_error ("monitor_read_memory",
1893 "bad response from monitor",
1894 memaddr, resp_len, buf, 0);
1895 p += strlen (current_monitor->getmem.resp_delim);
1898 monitor_debug ("MON scanning %d ,%lx '%s'\n", len, (long) p, p);
1899 if (current_monitor->flags & MO_GETMEM_16_BOUNDARY)
1907 while (!(c == '\000' || c == '\n' || c == '\r') && i > 0)
1911 if ((dumpaddr >= memaddr) && (i > 0))
1913 val = fromhex (c) * 16 + fromhex (*(p + 1));
1915 if (monitor_debug_p || remote_debug)
1916 fprintf_unfiltered (gdb_stdlog, "[%02x]", val);
1923 ++p; /* skip a blank or other non hex char */
1927 error (_("Failed to read via monitor"));
1928 if (monitor_debug_p || remote_debug)
1929 fprintf_unfiltered (gdb_stdlog, "\n");
1930 return fetched; /* Return the number of bytes actually read */
1932 monitor_debug ("MON scanning bytes\n");
1934 for (i = len; i > 0; i--)
1936 /* Skip non-hex chars, but bomb on end of string and newlines */
1943 if (*p == '\000' || *p == '\n' || *p == '\r')
1944 monitor_error ("monitor_read_memory",
1945 "badly terminated response from monitor",
1946 memaddr, resp_len, buf, 0);
1950 val = strtoul (p, &p1, 16);
1952 if (val == 0 && p == p1)
1953 monitor_error ("monitor_read_memory",
1954 "bad value from monitor",
1955 memaddr, resp_len, buf, 0);
1968 /* Transfer LEN bytes between target address MEMADDR and GDB address
1969 MYADDR. Returns 0 for success, errno code for failure. TARGET is
1973 monitor_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write,
1974 struct mem_attrib *attrib, struct target_ops *target)
1980 if (current_monitor->flags & MO_HAS_BLOCKWRITES)
1981 res = monitor_write_memory_block(memaddr, myaddr, len);
1983 res = monitor_write_memory(memaddr, myaddr, len);
1987 res = monitor_read_memory(memaddr, myaddr, len);
1994 monitor_kill (struct target_ops *ops)
1996 return; /* ignore attempts to kill target system */
1999 /* All we actually do is set the PC to the start address of exec_bfd. */
2002 monitor_create_inferior (struct target_ops *ops, char *exec_file,
2003 char *args, char **env, int from_tty)
2005 if (args && (*args != '\000'))
2006 error (_("Args are not supported by the monitor."));
2009 clear_proceed_status ();
2010 regcache_write_pc (get_current_regcache (),
2011 bfd_get_start_address (exec_bfd));
2014 /* Clean up when a program exits.
2015 The program actually lives on in the remote processor's RAM, and may be
2016 run again without a download. Don't leave it full of breakpoint
2020 monitor_mourn_inferior (struct target_ops *ops)
2022 unpush_target (targ_ops);
2023 generic_mourn_inferior (); /* Do all the proper things now */
2024 delete_thread_silent (monitor_ptid);
2027 /* Tell the monitor to add a breakpoint. */
2030 monitor_insert_breakpoint (struct bp_target_info *bp_tgt)
2032 CORE_ADDR addr = bp_tgt->placed_address;
2036 monitor_debug ("MON inst bkpt %s\n", paddr (addr));
2037 if (current_monitor->set_break == NULL)
2038 error (_("No set_break defined for this monitor"));
2040 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
2041 addr = gdbarch_addr_bits_remove (current_gdbarch, addr);
2043 /* Determine appropriate breakpoint size for this address. */
2044 gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &bplen);
2045 bp_tgt->placed_address = addr;
2046 bp_tgt->placed_size = bplen;
2048 for (i = 0; i < current_monitor->num_breakpoints; i++)
2050 if (breakaddr[i] == 0)
2052 breakaddr[i] = addr;
2053 monitor_printf (current_monitor->set_break, addr);
2054 monitor_expect_prompt (NULL, 0);
2059 error (_("Too many breakpoints (> %d) for monitor."), current_monitor->num_breakpoints);
2062 /* Tell the monitor to remove a breakpoint. */
2065 monitor_remove_breakpoint (struct bp_target_info *bp_tgt)
2067 CORE_ADDR addr = bp_tgt->placed_address;
2070 monitor_debug ("MON rmbkpt %s\n", paddr (addr));
2071 if (current_monitor->clr_break == NULL)
2072 error (_("No clr_break defined for this monitor"));
2074 for (i = 0; i < current_monitor->num_breakpoints; i++)
2076 if (breakaddr[i] == addr)
2079 /* some monitors remove breakpoints based on the address */
2080 if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR)
2081 monitor_printf (current_monitor->clr_break, addr);
2082 else if (current_monitor->flags & MO_CLR_BREAK_1_BASED)
2083 monitor_printf (current_monitor->clr_break, i + 1);
2085 monitor_printf (current_monitor->clr_break, i);
2086 monitor_expect_prompt (NULL, 0);
2090 fprintf_unfiltered (gdb_stderr,
2091 "Can't find breakpoint associated with 0x%s\n",
2096 /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
2097 an S-record. Return non-zero if the ACK is received properly. */
2100 monitor_wait_srec_ack (void)
2104 if (current_monitor->flags & MO_SREC_ACK_PLUS)
2106 return (readchar (timeout) == '+');
2108 else if (current_monitor->flags & MO_SREC_ACK_ROTATE)
2110 /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
2111 if ((ch = readchar (1)) < 0)
2113 if ((ch = readchar (1)) < 0)
2115 if ((ch = readchar (1)) < 0)
2117 if ((ch = readchar (1)) < 0)
2123 /* monitor_load -- download a file. */
2126 monitor_load (char *file, int from_tty)
2128 monitor_debug ("MON load\n");
2130 if (current_monitor->load_routine)
2131 current_monitor->load_routine (monitor_desc, file, hashmark);
2133 { /* The default is ascii S-records */
2135 unsigned long load_offset;
2138 /* enable user to specify address for downloading as 2nd arg to load */
2139 n = sscanf (file, "%s 0x%lx", buf, &load_offset);
2145 monitor_printf (current_monitor->load);
2146 if (current_monitor->loadresp)
2147 monitor_expect (current_monitor->loadresp, NULL, 0);
2149 load_srec (monitor_desc, file, (bfd_vma) load_offset,
2150 32, SREC_ALL, hashmark,
2151 current_monitor->flags & MO_SREC_ACK ?
2152 monitor_wait_srec_ack : NULL);
2154 monitor_expect_prompt (NULL, 0);
2157 /* Finally, make the PC point at the start address */
2159 regcache_write_pc (get_current_regcache (),
2160 bfd_get_start_address (exec_bfd));
2162 /* There used to be code here which would clear inferior_ptid and
2163 call clear_symtab_users. None of that should be necessary:
2164 monitor targets should behave like remote protocol targets, and
2165 since generic_load does none of those things, this function
2168 Furthermore, clearing inferior_ptid is *incorrect*. After doing
2169 a load, we still have a valid connection to the monitor, with a
2170 live processor state to fiddle with. The user can type
2171 `continue' or `jump *start' and make the program run. If they do
2172 these things, however, GDB will be talking to a running program
2173 while inferior_ptid is null_ptid; this makes things like
2174 reinit_frame_cache very confused. */
2178 monitor_stop (ptid_t ptid)
2180 monitor_debug ("MON stop\n");
2181 if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0)
2182 serial_send_break (monitor_desc);
2183 if (current_monitor->stop)
2184 monitor_printf_noecho (current_monitor->stop);
2187 /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
2188 in OUTPUT until the prompt is seen. FIXME: We read the characters
2189 ourseleves here cause of a nasty echo. */
2192 monitor_rcmd (char *command,
2193 struct ui_file *outbuf)
2199 if (monitor_desc == NULL)
2200 error (_("monitor target not open."));
2202 p = current_monitor->prompt;
2204 /* Send the command. Note that if no args were supplied, then we're
2205 just sending the monitor a newline, which is sometimes useful. */
2207 monitor_printf ("%s\r", (command ? command : ""));
2209 resp_len = monitor_expect_prompt (buf, sizeof buf);
2211 fputs_unfiltered (buf, outbuf); /* Output the response */
2214 /* Convert hex digit A to a number. */
2220 if (a >= '0' && a <= '9')
2222 if (a >= 'a' && a <= 'f')
2223 return a - 'a' + 10;
2224 if (a >= 'A' && a <= 'F')
2225 return a - 'A' + 10;
2227 error (_("Reply contains invalid hex digit 0x%x"), a);
2232 monitor_get_dev_name (void)
2237 /* Check to see if a thread is still alive. */
2240 monitor_thread_alive (struct target_ops *ops, ptid_t ptid)
2242 if (ptid_equal (ptid, monitor_ptid))
2243 /* The monitor's task is always alive. */
2249 /* Convert a thread ID to a string. Returns the string in a static
2253 monitor_pid_to_str (struct target_ops *ops, ptid_t ptid)
2255 static char buf[64];
2257 if (ptid_equal (monitor_ptid, ptid))
2259 xsnprintf (buf, sizeof buf, "Thread <main>");
2263 return normal_pid_to_str (ptid);
2266 static struct target_ops monitor_ops;
2269 init_base_monitor_ops (void)
2271 monitor_ops.to_close = monitor_close;
2272 monitor_ops.to_detach = monitor_detach;
2273 monitor_ops.to_resume = monitor_resume;
2274 monitor_ops.to_wait = monitor_wait;
2275 monitor_ops.to_fetch_registers = monitor_fetch_registers;
2276 monitor_ops.to_store_registers = monitor_store_registers;
2277 monitor_ops.to_prepare_to_store = monitor_prepare_to_store;
2278 monitor_ops.deprecated_xfer_memory = monitor_xfer_memory;
2279 monitor_ops.to_files_info = monitor_files_info;
2280 monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint;
2281 monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint;
2282 monitor_ops.to_kill = monitor_kill;
2283 monitor_ops.to_load = monitor_load;
2284 monitor_ops.to_create_inferior = monitor_create_inferior;
2285 monitor_ops.to_mourn_inferior = monitor_mourn_inferior;
2286 monitor_ops.to_stop = monitor_stop;
2287 monitor_ops.to_rcmd = monitor_rcmd;
2288 monitor_ops.to_log_command = serial_log_command;
2289 monitor_ops.to_thread_alive = monitor_thread_alive;
2290 monitor_ops.to_pid_to_str = monitor_pid_to_str;
2291 monitor_ops.to_stratum = process_stratum;
2292 monitor_ops.to_has_all_memory = 1;
2293 monitor_ops.to_has_memory = 1;
2294 monitor_ops.to_has_stack = 1;
2295 monitor_ops.to_has_registers = 1;
2296 monitor_ops.to_has_execution = 1;
2297 monitor_ops.to_magic = OPS_MAGIC;
2298 } /* init_base_monitor_ops */
2300 /* Init the target_ops structure pointed at by OPS */
2303 init_monitor_ops (struct target_ops *ops)
2305 if (monitor_ops.to_magic != OPS_MAGIC)
2306 init_base_monitor_ops ();
2308 memcpy (ops, &monitor_ops, sizeof monitor_ops);
2311 /* Define additional commands that are usually only used by monitors. */
2313 extern initialize_file_ftype _initialize_remote_monitors; /* -Wmissing-prototypes */
2316 _initialize_remote_monitors (void)
2318 init_base_monitor_ops ();
2319 add_setshow_boolean_cmd ("hash", no_class, &hashmark, _("\
2320 Set display of activity while downloading a file."), _("\
2321 Show display of activity while downloading a file."), _("\
2322 When enabled, a hashmark \'#\' is displayed."),
2324 NULL, /* FIXME: i18n: */
2325 &setlist, &showlist);
2327 add_setshow_zinteger_cmd ("monitor", no_class, &monitor_debug_p, _("\
2328 Set debugging of remote monitor communication."), _("\
2329 Show debugging of remote monitor communication."), _("\
2330 When enabled, communication between GDB and the remote monitor\n\
2333 NULL, /* FIXME: i18n: */
2334 &setdebuglist, &showdebuglist);
2336 /* Yes, 42000 is arbitrary. The only sense out of it, is that it
2338 monitor_ptid = ptid_build (42000, 0, 42000);