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 (ptid_t ptid, int step, enum target_signal sig)
917 /* Some monitors require a different command when starting a program */
918 monitor_debug ("MON resume\n");
919 if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1)
922 monitor_printf ("run\r");
923 if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT)
928 monitor_printf (current_monitor->step);
931 if (current_monitor->continue_hook)
932 (*current_monitor->continue_hook) ();
934 monitor_printf (current_monitor->cont);
935 if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT)
940 /* Parse the output of a register dump command. A monitor specific
941 regexp is used to extract individual register descriptions of the
942 form REG=VAL. Each description is split up into a name and a value
943 string which are passed down to monitor specific code. */
946 parse_register_dump (struct regcache *regcache, char *buf, int len)
948 monitor_debug ("MON Parsing register dump\n");
951 int regnamelen, vallen;
953 /* Element 0 points to start of register name, and element 1
954 points to the start of the register value. */
955 struct re_registers register_strings;
957 memset (®ister_strings, 0, sizeof (struct re_registers));
959 if (re_search (®ister_pattern, buf, len, 0, len,
960 ®ister_strings) == -1)
963 regnamelen = register_strings.end[1] - register_strings.start[1];
964 regname = buf + register_strings.start[1];
965 vallen = register_strings.end[2] - register_strings.start[2];
966 val = buf + register_strings.start[2];
968 current_monitor->supply_register (regcache, regname, regnamelen,
971 buf += register_strings.end[0];
972 len -= register_strings.end[0];
976 /* Send ^C to target to halt it. Target will respond, and send us a
980 monitor_interrupt (int signo)
982 /* If this doesn't work, try more severe steps. */
983 signal (signo, monitor_interrupt_twice);
985 if (monitor_debug_p || remote_debug)
986 fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n");
988 target_stop (inferior_ptid);
991 /* The user typed ^C twice. */
994 monitor_interrupt_twice (int signo)
996 signal (signo, ofunc);
998 monitor_interrupt_query ();
1000 signal (signo, monitor_interrupt);
1003 /* Ask the user what to do when an interrupt is received. */
1006 monitor_interrupt_query (void)
1008 target_terminal_ours ();
1010 if (query ("Interrupted while waiting for the program.\n\
1011 Give up (and stop debugging it)? "))
1013 target_mourn_inferior ();
1014 deprecated_throw_reason (RETURN_QUIT);
1017 target_terminal_inferior ();
1021 monitor_wait_cleanup (void *old_timeout)
1023 timeout = *(int *) old_timeout;
1024 signal (SIGINT, ofunc);
1025 in_monitor_wait = 0;
1031 monitor_wait_filter (char *buf,
1034 struct target_waitstatus *status)
1039 resp_len = monitor_expect_prompt (buf, bufmax);
1040 *ext_resp_len = resp_len;
1043 fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf);
1045 while (resp_len < 0);
1047 /* Print any output characters that were preceded by ^O. */
1048 /* FIXME - This would be great as a user settabgle flag */
1049 if (monitor_debug_p || remote_debug
1050 || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT)
1054 for (i = 0; i < resp_len - 1; i++)
1056 putchar_unfiltered (buf[++i]);
1062 /* Wait until the remote machine stops, then return, storing status in
1063 status just as `wait' would. */
1066 monitor_wait (struct target_ops *ops,
1067 ptid_t ptid, struct target_waitstatus *status)
1069 int old_timeout = timeout;
1070 char buf[TARGET_BUF_SIZE];
1072 struct cleanup *old_chain;
1074 status->kind = TARGET_WAITKIND_EXITED;
1075 status->value.integer = 0;
1077 old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout);
1078 monitor_debug ("MON wait\n");
1081 /* This is somthing other than a maintenance command */
1082 in_monitor_wait = 1;
1083 timeout = watchdog > 0 ? watchdog : -1;
1085 timeout = -1; /* Don't time out -- user program is running. */
1088 ofunc = (void (*)()) signal (SIGINT, monitor_interrupt);
1090 if (current_monitor->wait_filter)
1091 (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status);
1093 monitor_wait_filter (buf, sizeof (buf), &resp_len, status);
1095 #if 0 /* Transferred to monitor wait filter */
1098 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1101 fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf);
1103 while (resp_len < 0);
1105 /* Print any output characters that were preceded by ^O. */
1106 /* FIXME - This would be great as a user settabgle flag */
1107 if (monitor_debug_p || remote_debug
1108 || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT)
1112 for (i = 0; i < resp_len - 1; i++)
1114 putchar_unfiltered (buf[++i]);
1118 signal (SIGINT, ofunc);
1120 timeout = old_timeout;
1122 if (dump_reg_flag && current_monitor->dump_registers)
1125 monitor_printf (current_monitor->dump_registers);
1126 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1129 if (current_monitor->register_pattern)
1130 parse_register_dump (get_current_regcache (), buf, resp_len);
1132 monitor_debug ("Wait fetching registers after stop\n");
1133 monitor_dump_regs (get_current_regcache ());
1136 status->kind = TARGET_WAITKIND_STOPPED;
1137 status->value.sig = TARGET_SIGNAL_TRAP;
1139 discard_cleanups (old_chain);
1141 in_monitor_wait = 0;
1143 return inferior_ptid;
1146 /* Fetch register REGNO, or all registers if REGNO is -1. Returns
1150 monitor_fetch_register (struct regcache *regcache, int regno)
1157 regbuf = alloca (MAX_REGISTER_SIZE * 2 + 1);
1158 zerobuf = alloca (MAX_REGISTER_SIZE);
1159 memset (zerobuf, 0, MAX_REGISTER_SIZE);
1161 if (current_monitor->regname != NULL)
1162 name = current_monitor->regname (regno);
1164 name = current_monitor->regnames[regno];
1165 monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)");
1167 if (!name || (*name == '\0'))
1169 monitor_debug ("No register known for %d\n", regno);
1170 regcache_raw_supply (regcache, regno, zerobuf);
1174 /* send the register examine command */
1176 monitor_printf (current_monitor->getreg.cmd, name);
1178 /* If RESP_DELIM is specified, we search for that as a leading
1179 delimiter for the register value. Otherwise, we just start
1180 searching from the start of the buf. */
1182 if (current_monitor->getreg.resp_delim)
1184 monitor_debug ("EXP getreg.resp_delim\n");
1185 monitor_expect (current_monitor->getreg.resp_delim, NULL, 0);
1186 /* Handle case of first 32 registers listed in pairs. */
1187 if (current_monitor->flags & MO_32_REGS_PAIRED
1188 && (regno & 1) != 0 && regno < 32)
1190 monitor_debug ("EXP getreg.resp_delim\n");
1191 monitor_expect (current_monitor->getreg.resp_delim, NULL, 0);
1195 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */
1196 if (current_monitor->flags & MO_HEX_PREFIX)
1199 c = readchar (timeout);
1201 c = readchar (timeout);
1202 if ((c == '0') && ((c = readchar (timeout)) == 'x'))
1205 error (_("Bad value returned from monitor while fetching register %x."),
1209 /* Read upto the maximum number of hex digits for this register, skipping
1210 spaces, but stop reading if something else is seen. Some monitors
1211 like to drop leading zeros. */
1213 for (i = 0; i < register_size (get_regcache_arch (regcache), regno) * 2; i++)
1216 c = readchar (timeout);
1218 c = readchar (timeout);
1226 regbuf[i] = '\000'; /* terminate the number */
1227 monitor_debug ("REGVAL '%s'\n", regbuf);
1229 /* If TERM is present, we wait for that to show up. Also, (if TERM
1230 is present), we will send TERM_CMD if that is present. In any
1231 case, we collect all of the output into buf, and then wait for
1232 the normal prompt. */
1234 if (current_monitor->getreg.term)
1236 monitor_debug ("EXP getreg.term\n");
1237 monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */
1240 if (current_monitor->getreg.term_cmd)
1242 monitor_debug ("EMIT getreg.term.cmd\n");
1243 monitor_printf (current_monitor->getreg.term_cmd);
1245 if (!current_monitor->getreg.term || /* Already expected or */
1246 current_monitor->getreg.term_cmd) /* ack expected */
1247 monitor_expect_prompt (NULL, 0); /* get response */
1249 monitor_supply_register (regcache, regno, regbuf);
1252 /* Sometimes, it takes several commands to dump the registers */
1253 /* This is a primitive for use by variations of monitor interfaces in
1254 case they need to compose the operation.
1257 monitor_dump_reg_block (struct regcache *regcache, char *block_cmd)
1259 char buf[TARGET_BUF_SIZE];
1261 monitor_printf (block_cmd);
1262 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1263 parse_register_dump (regcache, buf, resp_len);
1268 /* Read the remote registers into the block regs. */
1269 /* Call the specific function if it has been provided */
1272 monitor_dump_regs (struct regcache *regcache)
1274 char buf[TARGET_BUF_SIZE];
1276 if (current_monitor->dumpregs)
1277 (*(current_monitor->dumpregs)) (regcache); /* call supplied function */
1278 else if (current_monitor->dump_registers) /* default version */
1280 monitor_printf (current_monitor->dump_registers);
1281 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1282 parse_register_dump (regcache, buf, resp_len);
1285 internal_error (__FILE__, __LINE__, _("failed internal consistency check")); /* Need some way to read registers */
1289 monitor_fetch_registers (struct regcache *regcache, int regno)
1291 monitor_debug ("MON fetchregs\n");
1292 if (current_monitor->getreg.cmd)
1296 monitor_fetch_register (regcache, regno);
1300 for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache));
1302 monitor_fetch_register (regcache, regno);
1306 monitor_dump_regs (regcache);
1310 /* Store register REGNO, or all if REGNO == 0. Return errno value. */
1313 monitor_store_register (struct regcache *regcache, int regno)
1318 if (current_monitor->regname != NULL)
1319 name = current_monitor->regname (regno);
1321 name = current_monitor->regnames[regno];
1323 if (!name || (*name == '\0'))
1325 monitor_debug ("MON Cannot store unknown register\n");
1329 regcache_cooked_read_unsigned (regcache, regno, &val);
1330 monitor_debug ("MON storeg %d %s\n", regno,
1332 register_size (get_regcache_arch (regcache), regno)));
1334 /* send the register deposit command */
1336 if (current_monitor->flags & MO_REGISTER_VALUE_FIRST)
1337 monitor_printf (current_monitor->setreg.cmd, val, name);
1338 else if (current_monitor->flags & MO_SETREG_INTERACTIVE)
1339 monitor_printf (current_monitor->setreg.cmd, name);
1341 monitor_printf (current_monitor->setreg.cmd, name, val);
1343 if (current_monitor->setreg.resp_delim)
1345 monitor_debug ("EXP setreg.resp_delim\n");
1346 monitor_expect_regexp (&setreg_resp_delim_pattern, NULL, 0);
1347 if (current_monitor->flags & MO_SETREG_INTERACTIVE)
1348 monitor_printf ("%s\r", paddr_nz (val));
1350 if (current_monitor->setreg.term)
1352 monitor_debug ("EXP setreg.term\n");
1353 monitor_expect (current_monitor->setreg.term, NULL, 0);
1354 if (current_monitor->flags & MO_SETREG_INTERACTIVE)
1355 monitor_printf ("%s\r", paddr_nz (val));
1356 monitor_expect_prompt (NULL, 0);
1359 monitor_expect_prompt (NULL, 0);
1360 if (current_monitor->setreg.term_cmd) /* Mode exit required */
1362 monitor_debug ("EXP setreg_termcmd\n");
1363 monitor_printf ("%s", current_monitor->setreg.term_cmd);
1364 monitor_expect_prompt (NULL, 0);
1366 } /* monitor_store_register */
1368 /* Store the remote registers. */
1371 monitor_store_registers (struct regcache *regcache, int regno)
1375 monitor_store_register (regcache, regno);
1379 for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache));
1381 monitor_store_register (regcache, regno);
1384 /* Get ready to modify the registers array. On machines which store
1385 individual registers, this doesn't need to do anything. On machines
1386 which store all the registers in one fell swoop, this makes sure
1387 that registers contains all the registers from the program being
1391 monitor_prepare_to_store (struct regcache *regcache)
1393 /* Do nothing, since we can store individual regs */
1397 monitor_files_info (struct target_ops *ops)
1399 printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name, baud_rate);
1403 monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len)
1405 unsigned int val, hostval;
1409 monitor_debug ("MON write %d %s\n", len, paddr (memaddr));
1411 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
1412 memaddr = gdbarch_addr_bits_remove (current_gdbarch, memaddr);
1414 /* Use memory fill command for leading 0 bytes. */
1416 if (current_monitor->fill)
1418 for (i = 0; i < len; i++)
1422 if (i > 4) /* More than 4 zeros is worth doing */
1424 monitor_debug ("MON FILL %d\n", i);
1425 if (current_monitor->flags & MO_FILL_USES_ADDR)
1426 monitor_printf (current_monitor->fill, memaddr, (memaddr + i) - 1, 0);
1428 monitor_printf (current_monitor->fill, memaddr, i, 0);
1430 monitor_expect_prompt (NULL, 0);
1437 /* Can't actually use long longs if VAL is an int (nice idea, though). */
1438 if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll)
1441 cmd = current_monitor->setmem.cmdll;
1445 if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl)
1448 cmd = current_monitor->setmem.cmdl;
1450 else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw)
1453 cmd = current_monitor->setmem.cmdw;
1458 cmd = current_monitor->setmem.cmdb;
1461 val = extract_unsigned_integer (myaddr, len);
1465 hostval = *(unsigned int *) myaddr;
1466 monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val);
1470 if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM)
1471 monitor_printf_noecho (cmd, memaddr, val);
1472 else if (current_monitor->flags & MO_SETMEM_INTERACTIVE)
1475 monitor_printf_noecho (cmd, memaddr);
1477 if (current_monitor->setmem.resp_delim)
1479 monitor_debug ("EXP setmem.resp_delim");
1480 monitor_expect_regexp (&setmem_resp_delim_pattern, NULL, 0);
1481 monitor_printf ("%x\r", val);
1483 if (current_monitor->setmem.term)
1485 monitor_debug ("EXP setmem.term");
1486 monitor_expect (current_monitor->setmem.term, NULL, 0);
1487 monitor_printf ("%x\r", val);
1489 if (current_monitor->setmem.term_cmd)
1490 { /* Emit this to get out of the memory editing state */
1491 monitor_printf ("%s", current_monitor->setmem.term_cmd);
1492 /* Drop through to expecting a prompt */
1496 monitor_printf (cmd, memaddr, val);
1498 monitor_expect_prompt (NULL, 0);
1505 monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len)
1511 /* Enter the sub mode */
1512 monitor_printf (current_monitor->setmem.cmdb, memaddr);
1513 monitor_expect_prompt (NULL, 0);
1517 monitor_printf ("%x\r", val);
1521 /* If we wanted to, here we could validate the address */
1522 monitor_expect_prompt (NULL, 0);
1525 /* Now exit the sub mode */
1526 monitor_printf (current_monitor->getreg.term_cmd);
1527 monitor_expect_prompt (NULL, 0);
1533 longlongendswap (unsigned char *a)
1542 *(a + i) = *(a + j);
1547 /* Format 32 chars of long long value, advance the pointer */
1548 static char *hexlate = "0123456789abcdef";
1550 longlong_hexchars (unsigned long long value,
1560 static unsigned char disbuf[8]; /* disassembly buffer */
1561 unsigned char *scan, *limit; /* loop controls */
1562 unsigned char c, nib;
1567 unsigned long long *dp;
1568 dp = (unsigned long long *) scan;
1571 longlongendswap (disbuf); /* FIXME: ONly on big endian hosts */
1572 while (scan < limit)
1574 c = *scan++; /* a byte of our long long value */
1580 leadzero = 0; /* henceforth we print even zeroes */
1582 nib = c >> 4; /* high nibble bits */
1583 *outbuff++ = hexlate[nib];
1584 nib = c & 0x0f; /* low nibble bits */
1585 *outbuff++ = hexlate[nib];
1589 } /* longlong_hexchars */
1593 /* I am only going to call this when writing virtual byte streams.
1594 Which possably entails endian conversions
1597 monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len)
1599 static char hexstage[20]; /* At least 16 digits required, plus null */
1604 llptr = (unsigned long long *) myaddr;
1607 monitor_printf (current_monitor->setmem.cmdll, memaddr);
1608 monitor_expect_prompt (NULL, 0);
1612 endstring = longlong_hexchars (*llptr, hexstage);
1613 *endstring = '\0'; /* NUll terminate for printf */
1614 monitor_printf ("%s\r", hexstage);
1618 /* If we wanted to, here we could validate the address */
1619 monitor_expect_prompt (NULL, 0);
1622 /* Now exit the sub mode */
1623 monitor_printf (current_monitor->getreg.term_cmd);
1624 monitor_expect_prompt (NULL, 0);
1630 /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
1631 /* This is for the large blocks of memory which may occur in downloading.
1632 And for monitors which use interactive entry,
1633 And for monitors which do not have other downloading methods.
1634 Without this, we will end up calling monitor_write_memory many times
1635 and do the entry and exit of the sub mode many times
1636 This currently assumes...
1637 MO_SETMEM_INTERACTIVE
1638 ! MO_NO_ECHO_ON_SETMEM
1639 To use this, the you have to patch the monitor_cmds block with
1640 this function. Otherwise, its not tuned up for use by all
1645 monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len)
1649 /* FIXME: This would be a good place to put the zero test */
1651 if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll)
1653 return monitor_write_memory_longlongs (memaddr, myaddr, len);
1656 written = monitor_write_memory_bytes (memaddr, myaddr, len);
1660 /* This is an alternate form of monitor_read_memory which is used for monitors
1661 which can only read a single byte/word/etc. at a time. */
1664 monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len)
1667 char membuf[sizeof (int) * 2 + 1];
1671 monitor_debug ("MON read single\n");
1673 /* Can't actually use long longs (nice idea, though). In fact, the
1674 call to strtoul below will fail if it tries to convert a value
1675 that's too big to fit in a long. */
1676 if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll)
1679 cmd = current_monitor->getmem.cmdll;
1683 if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl)
1686 cmd = current_monitor->getmem.cmdl;
1688 else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw)
1691 cmd = current_monitor->getmem.cmdw;
1696 cmd = current_monitor->getmem.cmdb;
1699 /* Send the examine command. */
1701 monitor_printf (cmd, memaddr);
1703 /* If RESP_DELIM is specified, we search for that as a leading
1704 delimiter for the memory value. Otherwise, we just start
1705 searching from the start of the buf. */
1707 if (current_monitor->getmem.resp_delim)
1709 monitor_debug ("EXP getmem.resp_delim\n");
1710 monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0);
1713 /* Now, read the appropriate number of hex digits for this loc,
1716 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1717 if (current_monitor->flags & MO_HEX_PREFIX)
1721 c = readchar (timeout);
1723 c = readchar (timeout);
1724 if ((c == '0') && ((c = readchar (timeout)) == 'x'))
1727 monitor_error ("monitor_read_memory_single",
1728 "bad response from monitor",
1729 memaddr, 0, NULL, 0);
1734 for (i = 0; i < len * 2; i++)
1740 c = readchar (timeout);
1746 monitor_error ("monitor_read_memory_single",
1747 "bad response from monitor",
1748 memaddr, i, membuf, 0);
1752 membuf[i] = '\000'; /* terminate the number */
1755 /* If TERM is present, we wait for that to show up. Also, (if TERM is
1756 present), we will send TERM_CMD if that is present. In any case, we collect
1757 all of the output into buf, and then wait for the normal prompt. */
1759 if (current_monitor->getmem.term)
1761 monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */
1763 if (current_monitor->getmem.term_cmd)
1765 monitor_printf (current_monitor->getmem.term_cmd);
1766 monitor_expect_prompt (NULL, 0);
1770 monitor_expect_prompt (NULL, 0); /* get response */
1773 val = strtoul (membuf, &p, 16);
1775 if (val == 0 && membuf == p)
1776 monitor_error ("monitor_read_memory_single",
1777 "bad value from monitor",
1778 memaddr, 0, membuf, 0);
1780 /* supply register stores in target byte order, so swap here */
1782 store_unsigned_integer (myaddr, len, val);
1787 /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
1788 memory at MEMADDR. Returns length moved. Currently, we do no more
1789 than 16 bytes at a time. */
1792 monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
1803 monitor_debug ("Zero length call to monitor_read_memory\n");
1807 monitor_debug ("MON read block ta(%s) ha(%lx) %d\n",
1808 paddr_nz (memaddr), (long) myaddr, len);
1810 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
1811 memaddr = gdbarch_addr_bits_remove (current_gdbarch, memaddr);
1813 if (current_monitor->flags & MO_GETMEM_READ_SINGLE)
1814 return monitor_read_memory_single (memaddr, myaddr, len);
1816 len = min (len, 16);
1818 /* Some dumpers align the first data with the preceeding 16
1819 byte boundary. Some print blanks and start at the
1820 requested boundary. EXACT_DUMPADDR
1823 dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR)
1824 ? memaddr : memaddr & ~0x0f;
1826 /* See if xfer would cross a 16 byte boundary. If so, clip it. */
1827 if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0)
1828 len = ((memaddr + len) & ~0xf) - memaddr;
1830 /* send the memory examine command */
1832 if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE)
1833 monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len);
1834 else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY)
1835 monitor_printf (current_monitor->getmem.cmdb, dumpaddr);
1837 monitor_printf (current_monitor->getmem.cmdb, memaddr, len);
1839 /* If TERM is present, we wait for that to show up. Also, (if TERM
1840 is present), we will send TERM_CMD if that is present. In any
1841 case, we collect all of the output into buf, and then wait for
1842 the normal prompt. */
1844 if (current_monitor->getmem.term)
1846 resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */
1849 monitor_error ("monitor_read_memory",
1850 "excessive response from monitor",
1851 memaddr, resp_len, buf, 0);
1853 if (current_monitor->getmem.term_cmd)
1855 serial_write (monitor_desc, current_monitor->getmem.term_cmd,
1856 strlen (current_monitor->getmem.term_cmd));
1857 monitor_expect_prompt (NULL, 0);
1861 resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */
1865 /* If RESP_DELIM is specified, we search for that as a leading
1866 delimiter for the values. Otherwise, we just start searching
1867 from the start of the buf. */
1869 if (current_monitor->getmem.resp_delim)
1872 struct re_registers resp_strings;
1873 monitor_debug ("MON getmem.resp_delim %s\n", current_monitor->getmem.resp_delim);
1875 memset (&resp_strings, 0, sizeof (struct re_registers));
1877 retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp,
1881 monitor_error ("monitor_read_memory",
1882 "bad response from monitor",
1883 memaddr, resp_len, buf, 0);
1885 p += resp_strings.end[0];
1887 p = strstr (p, current_monitor->getmem.resp_delim);
1889 monitor_error ("monitor_read_memory",
1890 "bad response from monitor",
1891 memaddr, resp_len, buf, 0);
1892 p += strlen (current_monitor->getmem.resp_delim);
1895 monitor_debug ("MON scanning %d ,%lx '%s'\n", len, (long) p, p);
1896 if (current_monitor->flags & MO_GETMEM_16_BOUNDARY)
1904 while (!(c == '\000' || c == '\n' || c == '\r') && i > 0)
1908 if ((dumpaddr >= memaddr) && (i > 0))
1910 val = fromhex (c) * 16 + fromhex (*(p + 1));
1912 if (monitor_debug_p || remote_debug)
1913 fprintf_unfiltered (gdb_stdlog, "[%02x]", val);
1920 ++p; /* skip a blank or other non hex char */
1924 error (_("Failed to read via monitor"));
1925 if (monitor_debug_p || remote_debug)
1926 fprintf_unfiltered (gdb_stdlog, "\n");
1927 return fetched; /* Return the number of bytes actually read */
1929 monitor_debug ("MON scanning bytes\n");
1931 for (i = len; i > 0; i--)
1933 /* Skip non-hex chars, but bomb on end of string and newlines */
1940 if (*p == '\000' || *p == '\n' || *p == '\r')
1941 monitor_error ("monitor_read_memory",
1942 "badly terminated response from monitor",
1943 memaddr, resp_len, buf, 0);
1947 val = strtoul (p, &p1, 16);
1949 if (val == 0 && p == p1)
1950 monitor_error ("monitor_read_memory",
1951 "bad value from monitor",
1952 memaddr, resp_len, buf, 0);
1965 /* Transfer LEN bytes between target address MEMADDR and GDB address
1966 MYADDR. Returns 0 for success, errno code for failure. TARGET is
1970 monitor_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write,
1971 struct mem_attrib *attrib, struct target_ops *target)
1977 if (current_monitor->flags & MO_HAS_BLOCKWRITES)
1978 res = monitor_write_memory_block(memaddr, myaddr, len);
1980 res = monitor_write_memory(memaddr, myaddr, len);
1984 res = monitor_read_memory(memaddr, myaddr, len);
1993 return; /* ignore attempts to kill target system */
1996 /* All we actually do is set the PC to the start address of exec_bfd. */
1999 monitor_create_inferior (struct target_ops *ops, char *exec_file,
2000 char *args, char **env, int from_tty)
2002 if (args && (*args != '\000'))
2003 error (_("Args are not supported by the monitor."));
2006 clear_proceed_status ();
2007 write_pc (bfd_get_start_address (exec_bfd));
2010 /* Clean up when a program exits.
2011 The program actually lives on in the remote processor's RAM, and may be
2012 run again without a download. Don't leave it full of breakpoint
2016 monitor_mourn_inferior (struct target_ops *ops)
2018 unpush_target (targ_ops);
2019 generic_mourn_inferior (); /* Do all the proper things now */
2020 delete_thread_silent (monitor_ptid);
2023 /* Tell the monitor to add a breakpoint. */
2026 monitor_insert_breakpoint (struct bp_target_info *bp_tgt)
2028 CORE_ADDR addr = bp_tgt->placed_address;
2032 monitor_debug ("MON inst bkpt %s\n", paddr (addr));
2033 if (current_monitor->set_break == NULL)
2034 error (_("No set_break defined for this monitor"));
2036 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
2037 addr = gdbarch_addr_bits_remove (current_gdbarch, addr);
2039 /* Determine appropriate breakpoint size for this address. */
2040 gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &bplen);
2041 bp_tgt->placed_address = addr;
2042 bp_tgt->placed_size = bplen;
2044 for (i = 0; i < current_monitor->num_breakpoints; i++)
2046 if (breakaddr[i] == 0)
2048 breakaddr[i] = addr;
2049 monitor_printf (current_monitor->set_break, addr);
2050 monitor_expect_prompt (NULL, 0);
2055 error (_("Too many breakpoints (> %d) for monitor."), current_monitor->num_breakpoints);
2058 /* Tell the monitor to remove a breakpoint. */
2061 monitor_remove_breakpoint (struct bp_target_info *bp_tgt)
2063 CORE_ADDR addr = bp_tgt->placed_address;
2066 monitor_debug ("MON rmbkpt %s\n", paddr (addr));
2067 if (current_monitor->clr_break == NULL)
2068 error (_("No clr_break defined for this monitor"));
2070 for (i = 0; i < current_monitor->num_breakpoints; i++)
2072 if (breakaddr[i] == addr)
2075 /* some monitors remove breakpoints based on the address */
2076 if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR)
2077 monitor_printf (current_monitor->clr_break, addr);
2078 else if (current_monitor->flags & MO_CLR_BREAK_1_BASED)
2079 monitor_printf (current_monitor->clr_break, i + 1);
2081 monitor_printf (current_monitor->clr_break, i);
2082 monitor_expect_prompt (NULL, 0);
2086 fprintf_unfiltered (gdb_stderr,
2087 "Can't find breakpoint associated with 0x%s\n",
2092 /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
2093 an S-record. Return non-zero if the ACK is received properly. */
2096 monitor_wait_srec_ack (void)
2100 if (current_monitor->flags & MO_SREC_ACK_PLUS)
2102 return (readchar (timeout) == '+');
2104 else if (current_monitor->flags & MO_SREC_ACK_ROTATE)
2106 /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
2107 if ((ch = readchar (1)) < 0)
2109 if ((ch = readchar (1)) < 0)
2111 if ((ch = readchar (1)) < 0)
2113 if ((ch = readchar (1)) < 0)
2119 /* monitor_load -- download a file. */
2122 monitor_load (char *file, int from_tty)
2124 monitor_debug ("MON load\n");
2126 if (current_monitor->load_routine)
2127 current_monitor->load_routine (monitor_desc, file, hashmark);
2129 { /* The default is ascii S-records */
2131 unsigned long load_offset;
2134 /* enable user to specify address for downloading as 2nd arg to load */
2135 n = sscanf (file, "%s 0x%lx", buf, &load_offset);
2141 monitor_printf (current_monitor->load);
2142 if (current_monitor->loadresp)
2143 monitor_expect (current_monitor->loadresp, NULL, 0);
2145 load_srec (monitor_desc, file, (bfd_vma) load_offset,
2146 32, SREC_ALL, hashmark,
2147 current_monitor->flags & MO_SREC_ACK ?
2148 monitor_wait_srec_ack : NULL);
2150 monitor_expect_prompt (NULL, 0);
2153 /* Finally, make the PC point at the start address */
2155 write_pc (bfd_get_start_address (exec_bfd));
2157 /* There used to be code here which would clear inferior_ptid and
2158 call clear_symtab_users. None of that should be necessary:
2159 monitor targets should behave like remote protocol targets, and
2160 since generic_load does none of those things, this function
2163 Furthermore, clearing inferior_ptid is *incorrect*. After doing
2164 a load, we still have a valid connection to the monitor, with a
2165 live processor state to fiddle with. The user can type
2166 `continue' or `jump *start' and make the program run. If they do
2167 these things, however, GDB will be talking to a running program
2168 while inferior_ptid is null_ptid; this makes things like
2169 reinit_frame_cache very confused. */
2173 monitor_stop (ptid_t ptid)
2175 monitor_debug ("MON stop\n");
2176 if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0)
2177 serial_send_break (monitor_desc);
2178 if (current_monitor->stop)
2179 monitor_printf_noecho (current_monitor->stop);
2182 /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
2183 in OUTPUT until the prompt is seen. FIXME: We read the characters
2184 ourseleves here cause of a nasty echo. */
2187 monitor_rcmd (char *command,
2188 struct ui_file *outbuf)
2194 if (monitor_desc == NULL)
2195 error (_("monitor target not open."));
2197 p = current_monitor->prompt;
2199 /* Send the command. Note that if no args were supplied, then we're
2200 just sending the monitor a newline, which is sometimes useful. */
2202 monitor_printf ("%s\r", (command ? command : ""));
2204 resp_len = monitor_expect_prompt (buf, sizeof buf);
2206 fputs_unfiltered (buf, outbuf); /* Output the response */
2209 /* Convert hex digit A to a number. */
2215 if (a >= '0' && a <= '9')
2217 if (a >= 'a' && a <= 'f')
2218 return a - 'a' + 10;
2219 if (a >= 'A' && a <= 'F')
2220 return a - 'A' + 10;
2222 error (_("Reply contains invalid hex digit 0x%x"), a);
2227 monitor_get_dev_name (void)
2232 /* Check to see if a thread is still alive. */
2235 monitor_thread_alive (ptid_t ptid)
2237 if (ptid_equal (ptid, monitor_ptid))
2238 /* The monitor's task is always alive. */
2244 /* Convert a thread ID to a string. Returns the string in a static
2248 monitor_pid_to_str (struct target_ops *ops, ptid_t ptid)
2250 static char buf[64];
2252 if (ptid_equal (monitor_ptid, ptid))
2254 xsnprintf (buf, sizeof buf, "Thread <main>");
2258 return normal_pid_to_str (ptid);
2261 static struct target_ops monitor_ops;
2264 init_base_monitor_ops (void)
2266 monitor_ops.to_close = monitor_close;
2267 monitor_ops.to_detach = monitor_detach;
2268 monitor_ops.to_resume = monitor_resume;
2269 monitor_ops.to_wait = monitor_wait;
2270 monitor_ops.to_fetch_registers = monitor_fetch_registers;
2271 monitor_ops.to_store_registers = monitor_store_registers;
2272 monitor_ops.to_prepare_to_store = monitor_prepare_to_store;
2273 monitor_ops.deprecated_xfer_memory = monitor_xfer_memory;
2274 monitor_ops.to_files_info = monitor_files_info;
2275 monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint;
2276 monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint;
2277 monitor_ops.to_kill = monitor_kill;
2278 monitor_ops.to_load = monitor_load;
2279 monitor_ops.to_create_inferior = monitor_create_inferior;
2280 monitor_ops.to_mourn_inferior = monitor_mourn_inferior;
2281 monitor_ops.to_stop = monitor_stop;
2282 monitor_ops.to_rcmd = monitor_rcmd;
2283 monitor_ops.to_log_command = serial_log_command;
2284 monitor_ops.to_thread_alive = monitor_thread_alive;
2285 monitor_ops.to_pid_to_str = monitor_pid_to_str;
2286 monitor_ops.to_stratum = process_stratum;
2287 monitor_ops.to_has_all_memory = 1;
2288 monitor_ops.to_has_memory = 1;
2289 monitor_ops.to_has_stack = 1;
2290 monitor_ops.to_has_registers = 1;
2291 monitor_ops.to_has_execution = 1;
2292 monitor_ops.to_magic = OPS_MAGIC;
2293 } /* init_base_monitor_ops */
2295 /* Init the target_ops structure pointed at by OPS */
2298 init_monitor_ops (struct target_ops *ops)
2300 if (monitor_ops.to_magic != OPS_MAGIC)
2301 init_base_monitor_ops ();
2303 memcpy (ops, &monitor_ops, sizeof monitor_ops);
2306 /* Define additional commands that are usually only used by monitors. */
2308 extern initialize_file_ftype _initialize_remote_monitors; /* -Wmissing-prototypes */
2311 _initialize_remote_monitors (void)
2313 init_base_monitor_ops ();
2314 add_setshow_boolean_cmd ("hash", no_class, &hashmark, _("\
2315 Set display of activity while downloading a file."), _("\
2316 Show display of activity while downloading a file."), _("\
2317 When enabled, a hashmark \'#\' is displayed."),
2319 NULL, /* FIXME: i18n: */
2320 &setlist, &showlist);
2322 add_setshow_zinteger_cmd ("monitor", no_class, &monitor_debug_p, _("\
2323 Set debugging of remote monitor communication."), _("\
2324 Show debugging of remote monitor communication."), _("\
2325 When enabled, communication between GDB and the remote monitor\n\
2328 NULL, /* FIXME: i18n: */
2329 &setdebuglist, &showdebuglist);
2331 /* Yes, 42000 is arbitrary. The only sense out of it, is that it
2333 monitor_ptid = ptid_build (42000, 0, 42000);