1 /* Remote debugging interface for boot monitors, for GDB.
2 Copyright 1990-1993, 1995-1997, 1999-2000 Free Software Foundation, Inc.
3 Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
4 Resurrected from the ashes by Stu Grossman.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* This file was derived from various remote-* modules. It is a collection
24 of generic support functions so GDB can talk directly to a ROM based
25 monitor. This saves use from having to hack an exception based handler
26 into existance, and makes for quick porting.
28 This module talks to a debug monitor called 'MONITOR', which
29 We communicate with MONITOR via either a direct serial line, or a TCP
30 (or possibly TELNET) stream to a terminal multiplexor,
31 which in turn talks to the target board. */
33 /* FIXME 32x64: This code assumes that registers and addresses are at
34 most 32 bits long. If they can be larger, you will need to declare
35 values as LONGEST and use %llx or some such to print values when
36 building commands to send to the monitor. Since we don't know of
37 any actual 64-bit targets with ROM monitors that use this code,
38 it's not an issue right now. -sts 4/18/96 */
46 #include "gdb_string.h"
47 #include <sys/types.h>
53 #include "gdb_regex.h"
57 static char *dev_name;
58 static struct target_ops *targ_ops;
60 static void monitor_vsprintf (char *sndbuf, char *pattern, va_list args);
62 static int readchar (int timeout);
64 static void monitor_fetch_register (int regno);
65 static void monitor_store_register (int regno);
67 static void monitor_printable_string (char *newstr, char *oldstr, int len);
68 static void monitor_error (char *function, char *message, CORE_ADDR memaddr, int len, char *string, int final_char);
69 static void monitor_detach (char *args, int from_tty);
70 static void monitor_resume (int pid, int step, enum target_signal sig);
71 static void monitor_interrupt (int signo);
72 static void monitor_interrupt_twice (int signo);
73 static void monitor_interrupt_query (void);
74 static void monitor_wait_cleanup (void *old_timeout);
76 static int monitor_wait (int pid, struct target_waitstatus *status);
77 static void monitor_fetch_registers (int regno);
78 static void monitor_store_registers (int regno);
79 static void monitor_prepare_to_store (void);
80 static int monitor_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
81 int write, struct target_ops *target);
82 static void monitor_files_info (struct target_ops *ops);
83 static int monitor_insert_breakpoint (CORE_ADDR addr, char *shadow);
84 static int monitor_remove_breakpoint (CORE_ADDR addr, char *shadow);
85 static void monitor_kill (void);
86 static void monitor_load (char *file, int from_tty);
87 static void monitor_mourn_inferior (void);
88 static void monitor_stop (void);
90 static int monitor_read_memory (CORE_ADDR addr, char *myaddr, int len);
91 static int monitor_write_memory (CORE_ADDR addr, char *myaddr, int len);
92 static int monitor_write_memory_bytes (CORE_ADDR addr, char *myaddr, int len);
93 static int monitor_write_memory_block (CORE_ADDR memaddr,
94 char *myaddr, int len);
95 static int monitor_expect_regexp (struct re_pattern_buffer *pat,
96 char *buf, int buflen);
97 static void monitor_dump_regs (void);
99 static int from_hex (int a);
100 static unsigned long get_hex_word (void);
102 static void parse_register_dump (char *, int);
104 static struct monitor_ops *current_monitor;
106 static int hashmark; /* flag set by "set hash" */
108 static int timeout = 30;
110 static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */
112 static void (*ofunc) (); /* Old SIGINT signal handler */
114 static CORE_ADDR *breakaddr;
116 /* Descriptor for I/O to remote machine. Initialize it to NULL so
117 that monitor_open knows that we don't have a file open when the
120 static serial_t monitor_desc = NULL;
122 /* Pointer to regexp pattern matching data */
124 static struct re_pattern_buffer register_pattern;
125 static char register_fastmap[256];
127 static struct re_pattern_buffer getmem_resp_delim_pattern;
128 static char getmem_resp_delim_fastmap[256];
130 static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when
131 monitor_wait wakes up. */
133 static DCACHE *remote_dcache;
134 static int first_time = 0; /* is this the first time we're executing after
135 gaving created the child proccess? */
137 #define TARGET_BUF_SIZE 2048
139 /* Monitor specific debugging information. Typically only useful to
140 the developer of a new monitor interface. */
142 static void monitor_debug (const char *fmt, ...) ATTR_FORMAT(printf, 1, 2);
144 static int monitor_debug_p = 0;
146 /* NOTE: This file alternates between monitor_debug_p and remote_debug
147 when determining if debug information is printed. Perhaphs this
148 could be simplified. */
151 monitor_debug (const char *fmt, ...)
156 va_start (args, fmt);
157 vfprintf_filtered (gdb_stdlog, fmt, args);
163 /* Convert a string into a printable representation, Return # byte in
164 the new string. When LEN is >0 it specifies the size of the
165 string. Otherwize strlen(oldstr) is used. */
168 monitor_printable_string (char *newstr, char *oldstr, int len)
174 len = strlen (oldstr);
176 for (i = 0; i < len; i++)
187 sprintf (newstr, "\\x%02x", ch & 0xff);
226 /* Print monitor errors with a string, converting the string to printable
230 monitor_error (char *function, char *message,
231 CORE_ADDR memaddr, int len, char *string, int final_char)
233 int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len;
234 char *safe_string = alloca ((real_len * 4) + 1);
235 monitor_printable_string (safe_string, string, real_len);
238 error ("%s (0x%s): %s: %s%c", function, paddr_nz (memaddr), message, safe_string, final_char);
240 error ("%s (0x%s): %s: %s", function, paddr_nz (memaddr), message, safe_string);
243 /* Convert hex digit A to a number. */
248 if (a >= '0' && a <= '9')
250 else if (a >= 'a' && a <= 'f')
252 else if (a >= 'A' && a <= 'F')
255 error ("Invalid hex digit %d", a);
258 /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses
260 This function exists to get around the problem that many host platforms
261 don't have a printf that can print 64-bit addresses. The %A format
262 specification is recognized as a special case, and causes the argument
263 to be printed as a 64-bit hexadecimal address.
265 Only format specifiers of the form "[0-9]*[a-z]" are recognized.
266 If it is a '%s' format, the argument is a string; otherwise the
267 argument is assumed to be a long integer.
269 %% is also turned into a single %.
273 monitor_vsprintf (char *sndbuf, char *pattern, va_list args)
283 for (p = pattern; *p; p++)
287 /* Copy the format specifier to a separate buffer. */
289 for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2;
292 format[i] = fmt = *p;
293 format[i + 1] = '\0';
295 /* Fetch the next argument and print it. */
299 strcpy (sndbuf, "%");
302 arg_addr = va_arg (args, CORE_ADDR);
303 strcpy (sndbuf, paddr_nz (arg_addr));
306 arg_string = va_arg (args, char *);
307 sprintf (sndbuf, format, arg_string);
310 arg_int = va_arg (args, long);
311 sprintf (sndbuf, format, arg_int);
314 sndbuf += strlen (sndbuf);
323 /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo.
324 Works just like printf. */
327 monitor_printf_noecho (char *pattern,...)
333 va_start (args, pattern);
335 monitor_vsprintf (sndbuf, pattern, args);
337 len = strlen (sndbuf);
338 if (len + 1 > sizeof sndbuf)
343 char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1);
344 monitor_printable_string (safe_string, sndbuf, 0);
345 fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string);
348 monitor_write (sndbuf, len);
351 /* monitor_printf -- Send data to monitor and check the echo. Works just like
355 monitor_printf (char *pattern,...)
361 va_start (args, pattern);
363 monitor_vsprintf (sndbuf, pattern, args);
365 len = strlen (sndbuf);
366 if (len + 1 > sizeof sndbuf)
371 char *safe_string = (char *) alloca ((len * 4) + 1);
372 monitor_printable_string (safe_string, sndbuf, 0);
373 fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string);
376 monitor_write (sndbuf, len);
378 /* We used to expect that the next immediate output was the characters we
379 just output, but sometimes some extra junk appeared before the characters
380 we expected, like an extra prompt, or a portmaster sending telnet negotiations.
381 So, just start searching for what we sent, and skip anything unknown. */
382 monitor_debug ("ExpectEcho\n");
383 monitor_expect (sndbuf, (char *) 0, 0);
387 /* Write characters to the remote system. */
390 monitor_write (char *buf, int buflen)
392 if (SERIAL_WRITE (monitor_desc, buf, buflen))
393 fprintf_unfiltered (gdb_stderr, "SERIAL_WRITE failed: %s\n",
394 safe_strerror (errno));
398 /* Read a binary character from the remote system, doing all the fancy
399 timeout stuff, but without interpreting the character in any way,
400 and without printing remote debug information. */
403 monitor_readchar (void)
411 c = SERIAL_READCHAR (monitor_desc, timeout);
414 c &= 0xff; /* don't lose bit 7 */
421 if (c == SERIAL_TIMEOUT)
422 error ("Timeout reading from remote system.");
424 perror_with_name ("remote-monitor");
428 /* Read a character from the remote system, doing all the fancy
432 readchar (int timeout)
437 last_random, last_nl, last_cr, last_crnl
445 c = SERIAL_READCHAR (monitor_desc, timeout);
450 /* This seems to interfere with proper function of the
452 if (monitor_debug_p || remote_debug)
457 puts_debug ("read -->", buf, "<--");
462 /* Canonicialize \n\r combinations into one \r */
463 if ((current_monitor->flags & MO_HANDLE_NL) != 0)
465 if ((c == '\r' && state == last_nl)
466 || (c == '\n' && state == last_cr))
487 if (c == SERIAL_TIMEOUT)
489 /* I fail to see how detaching here can be useful */
490 if (in_monitor_wait) /* Watchdog went off */
492 target_mourn_inferior ();
493 error ("GDB serial timeout has expired. Target detached.\n");
497 error ("Timeout reading from remote system.");
499 perror_with_name ("remote-monitor");
502 /* Scan input from the remote system, until STRING is found. If BUF is non-
503 zero, then collect input until we have collected either STRING or BUFLEN-1
504 chars. In either case we terminate BUF with a 0. If input overflows BUF
505 because STRING can't be found, return -1, else return number of chars in BUF
506 (minus the terminating NUL). Note that in the non-overflow case, STRING
507 will be at the end of BUF. */
510 monitor_expect (char *string, char *buf, int buflen)
513 int obuflen = buflen;
515 extern struct target_ops *targ_ops;
519 char *safe_string = (char *) alloca ((strlen (string) * 4) + 1);
520 monitor_printable_string (safe_string, string, 0);
521 fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string);
536 c = readchar (timeout);
543 c = readchar (timeout);
545 /* Don't expect any ^C sent to be echoed */
547 if (*p == '\003' || c == *p)
557 return obuflen - buflen;
563 else if ((c == '\021' || c == '\023') &&
564 (STREQ (targ_ops->to_shortname, "m32r")
565 || STREQ (targ_ops->to_shortname, "mon2000")))
566 { /* m32r monitor emits random DC1/DC3 chars */
571 /* We got a character that doesn't match the string. We need to
572 back up p, but how far? If we're looking for "..howdy" and the
573 monitor sends "...howdy"? There's certainly a match in there,
574 but when we receive the third ".", we won't find it if we just
575 restart the matching at the beginning of the string.
577 This is a Boyer-Moore kind of situation. We want to reset P to
578 the end of the longest prefix of STRING that is a suffix of
579 what we've read so far. In the example above, that would be
580 ".." --- the longest prefix of "..howdy" that is a suffix of
581 "...". This longest prefix could be the empty string, if C
582 is nowhere to be found in STRING.
584 If this longest prefix is not the empty string, it must contain
585 C, so let's search from the end of STRING for instances of C,
586 and see if the portion of STRING before that is a suffix of
587 what we read before C. Actually, we can search backwards from
588 p, since we know no prefix can be longer than that.
590 Note that we can use STRING itself, along with C, as a record
591 of what we've received so far. :) */
594 for (i = (p - string) - 1; i >= 0; i--)
597 /* Is this prefix a suffix of what we've read so far?
599 string[0 .. i-1] == string[p - i, p - 1]? */
600 if (! memcmp (string, p - i, i))
612 /* Search for a regexp. */
615 monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen)
619 monitor_debug ("MON Expecting regexp\n");
624 mybuf = alloca (TARGET_BUF_SIZE);
625 buflen = TARGET_BUF_SIZE;
633 if (p - mybuf >= buflen)
634 { /* Buffer about to overflow */
636 /* On overflow, we copy the upper half of the buffer to the lower half. Not
637 great, but it usually works... */
639 memcpy (mybuf, mybuf + buflen / 2, buflen / 2);
640 p = mybuf + buflen / 2;
643 *p++ = readchar (timeout);
645 retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL);
651 /* Keep discarding input until we see the MONITOR prompt.
653 The convention for dealing with the prompt is that you
655 o *then* wait for the prompt.
657 Thus the last thing that a procedure does with the serial line will
658 be an monitor_expect_prompt(). Exception: monitor_resume does not
659 wait for the prompt, because the terminal is being handed over to
660 the inferior. However, the next thing which happens after that is
661 a monitor_wait which does wait for the prompt. Note that this
662 includes abnormal exit, e.g. error(). This is necessary to prevent
663 getting into states from which we can't recover. */
666 monitor_expect_prompt (char *buf, int buflen)
668 monitor_debug ("MON Expecting prompt\n");
669 return monitor_expect (current_monitor->prompt, buf, buflen);
672 /* Get N 32-bit words from remote, each preceded by a space, and put
673 them in registers starting at REGNO. */
684 ch = readchar (timeout);
685 while (isspace (ch));
689 for (i = 7; i >= 1; i--)
691 ch = readchar (timeout);
694 val = (val << 4) | from_hex (ch);
702 compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern,
708 compiled_pattern->fastmap = fastmap;
710 tmp = re_set_syntax (RE_SYNTAX_EMACS);
711 val = re_compile_pattern (pattern,
717 error ("compile_pattern: Can't compile pattern string `%s': %s!", pattern, val);
720 re_compile_fastmap (compiled_pattern);
723 /* Open a connection to a remote debugger. NAME is the filename used
724 for communication. */
727 monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty)
732 if (mon_ops->magic != MONITOR_OPS_MAGIC)
733 error ("Magic number of monitor_ops struct wrong.");
735 targ_ops = mon_ops->target;
736 name = targ_ops->to_shortname;
739 error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\
740 `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name);
742 target_preopen (from_tty);
744 /* Setup pattern for register dump */
746 if (mon_ops->register_pattern)
747 compile_pattern (mon_ops->register_pattern, ®ister_pattern,
750 if (mon_ops->getmem.resp_delim)
751 compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern,
752 getmem_resp_delim_fastmap);
754 unpush_target (targ_ops);
758 dev_name = strsave (args);
760 monitor_desc = SERIAL_OPEN (dev_name);
763 perror_with_name (dev_name);
767 if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate))
769 SERIAL_CLOSE (monitor_desc);
770 perror_with_name (dev_name);
774 SERIAL_RAW (monitor_desc);
776 SERIAL_FLUSH_INPUT (monitor_desc);
778 /* some systems only work with 2 stop bits */
780 SERIAL_SETSTOPBITS (monitor_desc, mon_ops->stopbits);
782 current_monitor = mon_ops;
784 /* See if we can wake up the monitor. First, try sending a stop sequence,
785 then send the init strings. Last, remove all breakpoints. */
787 if (current_monitor->stop)
790 if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0)
792 monitor_debug ("EXP Open echo\n");
793 monitor_expect_prompt (NULL, 0);
797 /* wake up the monitor and see if it's alive */
798 for (p = mon_ops->init; *p != NULL; p++)
800 /* Some of the characters we send may not be echoed,
801 but we hope to get a prompt at the end of it all. */
803 if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0)
806 monitor_printf_noecho (*p);
807 monitor_expect_prompt (NULL, 0);
810 SERIAL_FLUSH_INPUT (monitor_desc);
812 /* Alloc breakpoints */
813 if (mon_ops->set_break != NULL)
815 if (mon_ops->num_breakpoints == 0)
816 mon_ops->num_breakpoints = 8;
818 breakaddr = (CORE_ADDR *) xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR));
819 memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR));
822 /* Remove all breakpoints */
824 if (mon_ops->clr_all_break)
826 monitor_printf (mon_ops->clr_all_break);
827 monitor_expect_prompt (NULL, 0);
831 printf_unfiltered ("Remote target %s connected to %s\n", name, dev_name);
833 push_target (targ_ops);
835 inferior_pid = 42000; /* Make run command think we are busy... */
837 /* Give monitor_wait something to read */
839 monitor_printf (current_monitor->line_term);
843 if (current_monitor->flags & MO_HAS_BLOCKWRITES)
844 remote_dcache = dcache_init (monitor_read_memory,
845 monitor_write_memory_block);
847 remote_dcache = dcache_init (monitor_read_memory, monitor_write_memory);
850 dcache_flush (remote_dcache);
855 /* Close out all files and local state before this target loses
859 monitor_close (int quitting)
862 SERIAL_CLOSE (monitor_desc);
864 /* Free breakpoint memory */
865 if (breakaddr != NULL)
874 /* Terminate the open connection to the remote debugger. Use this
875 when you want to detach and do something else with your gdb. */
878 monitor_detach (char *args, int from_tty)
880 pop_target (); /* calls monitor_close to do the real work */
882 printf_unfiltered ("Ending remote %s debugging\n", target_shortname);
885 /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
888 monitor_supply_register (int regno, char *valstr)
891 unsigned char regbuf[MAX_REGISTER_RAW_SIZE];
896 while (p && *p != '\0')
898 if (*p == '\r' || *p == '\n')
909 if (!isxdigit (*p) && *p != 'x')
915 val += fromhex (*p++);
917 monitor_debug ("Supplying Register %d %s\n", regno, valstr);
920 error ("monitor_supply_register (%d): bad value from monitor: %s.",
923 /* supply register stores in target byte order, so swap here */
925 store_unsigned_integer (regbuf, REGISTER_RAW_SIZE (regno), val);
927 supply_register (regno, regbuf);
932 /* Tell the remote machine to resume. */
935 flush_monitor_dcache (void)
937 dcache_flush (remote_dcache);
941 monitor_resume (int pid, int step, enum target_signal sig)
943 /* Some monitors require a different command when starting a program */
944 monitor_debug ("MON resume\n");
945 if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1)
948 monitor_printf ("run\r");
949 if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT)
953 dcache_flush (remote_dcache);
955 monitor_printf (current_monitor->step);
958 if (current_monitor->continue_hook)
959 (*current_monitor->continue_hook) ();
961 monitor_printf (current_monitor->cont);
962 if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT)
967 /* Parse the output of a register dump command. A monitor specific
968 regexp is used to extract individual register descriptions of the
969 form REG=VAL. Each description is split up into a name and a value
970 string which are passed down to monitor specific code. */
973 parse_register_dump (char *buf, int len)
975 monitor_debug ("MON Parsing register dump\n");
978 int regnamelen, vallen;
980 /* Element 0 points to start of register name, and element 1
981 points to the start of the register value. */
982 struct re_registers register_strings;
984 memset (®ister_strings, 0, sizeof (struct re_registers));
986 if (re_search (®ister_pattern, buf, len, 0, len,
987 ®ister_strings) == -1)
990 regnamelen = register_strings.end[1] - register_strings.start[1];
991 regname = buf + register_strings.start[1];
992 vallen = register_strings.end[2] - register_strings.start[2];
993 val = buf + register_strings.start[2];
995 current_monitor->supply_register (regname, regnamelen, val, vallen);
997 buf += register_strings.end[0];
998 len -= register_strings.end[0];
1002 /* Send ^C to target to halt it. Target will respond, and send us a
1006 monitor_interrupt (int signo)
1008 /* If this doesn't work, try more severe steps. */
1009 signal (signo, monitor_interrupt_twice);
1011 if (monitor_debug_p || remote_debug)
1012 fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n");
1017 /* The user typed ^C twice. */
1020 monitor_interrupt_twice (int signo)
1022 signal (signo, ofunc);
1024 monitor_interrupt_query ();
1026 signal (signo, monitor_interrupt);
1029 /* Ask the user what to do when an interrupt is received. */
1032 monitor_interrupt_query (void)
1034 target_terminal_ours ();
1036 if (query ("Interrupted while waiting for the program.\n\
1037 Give up (and stop debugging it)? "))
1039 target_mourn_inferior ();
1040 return_to_top_level (RETURN_QUIT);
1043 target_terminal_inferior ();
1047 monitor_wait_cleanup (void *old_timeout)
1049 timeout = *(int *) old_timeout;
1050 signal (SIGINT, ofunc);
1051 in_monitor_wait = 0;
1057 monitor_wait_filter (char *buf,
1060 struct target_waitstatus *status
1066 resp_len = monitor_expect_prompt (buf, bufmax);
1067 *ext_resp_len = resp_len;
1070 fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf);
1072 while (resp_len < 0);
1074 /* Print any output characters that were preceded by ^O. */
1075 /* FIXME - This would be great as a user settabgle flag */
1076 if (monitor_debug_p || remote_debug
1077 || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT)
1081 for (i = 0; i < resp_len - 1; i++)
1083 putchar_unfiltered (buf[++i]);
1089 /* Wait until the remote machine stops, then return, storing status in
1090 status just as `wait' would. */
1093 monitor_wait (int pid, struct target_waitstatus *status)
1095 int old_timeout = timeout;
1096 char buf[TARGET_BUF_SIZE];
1098 struct cleanup *old_chain;
1100 status->kind = TARGET_WAITKIND_EXITED;
1101 status->value.integer = 0;
1103 old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout);
1104 monitor_debug ("MON wait\n");
1107 /* This is somthing other than a maintenance command */
1108 in_monitor_wait = 1;
1109 timeout = watchdog > 0 ? watchdog : -1;
1111 timeout = -1; /* Don't time out -- user program is running. */
1114 ofunc = (void (*)()) signal (SIGINT, monitor_interrupt);
1116 if (current_monitor->wait_filter)
1117 (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status);
1119 monitor_wait_filter (buf, sizeof (buf), &resp_len, status);
1121 #if 0 /* Transferred to monitor wait filter */
1124 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1127 fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf);
1129 while (resp_len < 0);
1131 /* Print any output characters that were preceded by ^O. */
1132 /* FIXME - This would be great as a user settabgle flag */
1133 if (monitor_debug_p || remote_debug
1134 || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT)
1138 for (i = 0; i < resp_len - 1; i++)
1140 putchar_unfiltered (buf[++i]);
1144 signal (SIGINT, ofunc);
1146 timeout = old_timeout;
1148 if (dump_reg_flag && current_monitor->dump_registers)
1151 monitor_printf (current_monitor->dump_registers);
1152 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1155 if (current_monitor->register_pattern)
1156 parse_register_dump (buf, resp_len);
1158 monitor_debug ("Wait fetching registers after stop\n");
1159 monitor_dump_regs ();
1162 status->kind = TARGET_WAITKIND_STOPPED;
1163 status->value.sig = TARGET_SIGNAL_TRAP;
1165 discard_cleanups (old_chain);
1167 in_monitor_wait = 0;
1169 return inferior_pid;
1172 /* Fetch register REGNO, or all registers if REGNO is -1. Returns
1176 monitor_fetch_register (int regno)
1183 regbuf = alloca (MAX_REGISTER_RAW_SIZE * 2 + 1);
1184 zerobuf = alloca (MAX_REGISTER_RAW_SIZE);
1185 memset (zerobuf, 0, MAX_REGISTER_RAW_SIZE);
1187 name = current_monitor->regnames[regno];
1188 monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)");
1190 if (!name || (*name == '\0'))
1192 monitor_debug ("No register known for %d\n", regno);
1193 supply_register (regno, zerobuf);
1197 /* send the register examine command */
1199 monitor_printf (current_monitor->getreg.cmd, name);
1201 /* If RESP_DELIM is specified, we search for that as a leading
1202 delimiter for the register value. Otherwise, we just start
1203 searching from the start of the buf. */
1205 if (current_monitor->getreg.resp_delim)
1207 monitor_debug ("EXP getreg.resp_delim\n");
1208 monitor_expect (current_monitor->getreg.resp_delim, NULL, 0);
1209 /* Handle case of first 32 registers listed in pairs. */
1210 if (current_monitor->flags & MO_32_REGS_PAIRED
1211 && (regno & 1) != 0 && regno < 32)
1213 monitor_debug ("EXP getreg.resp_delim\n");
1214 monitor_expect (current_monitor->getreg.resp_delim, NULL, 0);
1218 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */
1219 if (current_monitor->flags & MO_HEX_PREFIX)
1222 c = readchar (timeout);
1224 c = readchar (timeout);
1225 if ((c == '0') && ((c = readchar (timeout)) == 'x'))
1228 error ("Bad value returned from monitor while fetching register %x.",
1232 /* Read upto the maximum number of hex digits for this register, skipping
1233 spaces, but stop reading if something else is seen. Some monitors
1234 like to drop leading zeros. */
1236 for (i = 0; i < REGISTER_RAW_SIZE (regno) * 2; i++)
1239 c = readchar (timeout);
1241 c = readchar (timeout);
1249 regbuf[i] = '\000'; /* terminate the number */
1250 monitor_debug ("REGVAL '%s'\n", regbuf);
1252 /* If TERM is present, we wait for that to show up. Also, (if TERM
1253 is present), we will send TERM_CMD if that is present. In any
1254 case, we collect all of the output into buf, and then wait for
1255 the normal prompt. */
1257 if (current_monitor->getreg.term)
1259 monitor_debug ("EXP getreg.term\n");
1260 monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */
1263 if (current_monitor->getreg.term_cmd)
1265 monitor_debug ("EMIT getreg.term.cmd\n");
1266 monitor_printf (current_monitor->getreg.term_cmd);
1268 if (!current_monitor->getreg.term || /* Already expected or */
1269 current_monitor->getreg.term_cmd) /* ack expected */
1270 monitor_expect_prompt (NULL, 0); /* get response */
1272 monitor_supply_register (regno, regbuf);
1275 /* Sometimes, it takes several commands to dump the registers */
1276 /* This is a primitive for use by variations of monitor interfaces in
1277 case they need to compose the operation.
1280 monitor_dump_reg_block (char *block_cmd)
1282 char buf[TARGET_BUF_SIZE];
1284 monitor_printf (block_cmd);
1285 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1286 parse_register_dump (buf, resp_len);
1291 /* Read the remote registers into the block regs. */
1292 /* Call the specific function if it has been provided */
1295 monitor_dump_regs (void)
1297 char buf[TARGET_BUF_SIZE];
1299 if (current_monitor->dumpregs)
1300 (*(current_monitor->dumpregs)) (); /* call supplied function */
1301 else if (current_monitor->dump_registers) /* default version */
1303 monitor_printf (current_monitor->dump_registers);
1304 resp_len = monitor_expect_prompt (buf, sizeof (buf));
1305 parse_register_dump (buf, resp_len);
1308 abort (); /* Need some way to read registers */
1312 monitor_fetch_registers (int regno)
1314 monitor_debug ("MON fetchregs\n");
1315 if (current_monitor->getreg.cmd)
1319 monitor_fetch_register (regno);
1323 for (regno = 0; regno < NUM_REGS; regno++)
1324 monitor_fetch_register (regno);
1328 monitor_dump_regs ();
1332 /* Store register REGNO, or all if REGNO == 0. Return errno value. */
1335 monitor_store_register (int regno)
1340 name = current_monitor->regnames[regno];
1341 if (!name || (*name == '\0'))
1343 monitor_debug ("MON Cannot store unknown register\n");
1347 val = read_register (regno);
1348 monitor_debug ("MON storeg %d %s\n", regno,
1349 phex (val, REGISTER_RAW_SIZE (regno)));
1351 /* send the register deposit command */
1353 if (current_monitor->flags & MO_REGISTER_VALUE_FIRST)
1354 monitor_printf (current_monitor->setreg.cmd, val, name);
1355 else if (current_monitor->flags & MO_SETREG_INTERACTIVE)
1356 monitor_printf (current_monitor->setreg.cmd, name);
1358 monitor_printf (current_monitor->setreg.cmd, name, val);
1360 if (current_monitor->setreg.term)
1362 monitor_debug ("EXP setreg.term\n");
1363 monitor_expect (current_monitor->setreg.term, NULL, 0);
1364 if (current_monitor->flags & MO_SETREG_INTERACTIVE)
1365 monitor_printf ("%s\r", paddr_nz (val));
1366 monitor_expect_prompt (NULL, 0);
1369 monitor_expect_prompt (NULL, 0);
1370 if (current_monitor->setreg.term_cmd) /* Mode exit required */
1372 monitor_debug ("EXP setreg_termcmd\n");
1373 monitor_printf ("%s", current_monitor->setreg.term_cmd);
1374 monitor_expect_prompt (NULL, 0);
1376 } /* monitor_store_register */
1378 /* Store the remote registers. */
1381 monitor_store_registers (int regno)
1385 monitor_store_register (regno);
1389 for (regno = 0; regno < NUM_REGS; regno++)
1390 monitor_store_register (regno);
1393 /* Get ready to modify the registers array. On machines which store
1394 individual registers, this doesn't need to do anything. On machines
1395 which store all the registers in one fell swoop, this makes sure
1396 that registers contains all the registers from the program being
1400 monitor_prepare_to_store (void)
1402 /* Do nothing, since we can store individual regs */
1406 monitor_files_info (struct target_ops *ops)
1408 printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name, baud_rate);
1412 monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len)
1414 unsigned int val, hostval;
1418 monitor_debug ("MON write %d %s\n", len, paddr (memaddr));
1420 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
1421 memaddr = ADDR_BITS_REMOVE (memaddr);
1423 /* Use memory fill command for leading 0 bytes. */
1425 if (current_monitor->fill)
1427 for (i = 0; i < len; i++)
1431 if (i > 4) /* More than 4 zeros is worth doing */
1433 monitor_debug ("MON FILL %d\n", i);
1434 if (current_monitor->flags & MO_FILL_USES_ADDR)
1435 monitor_printf (current_monitor->fill, memaddr, (memaddr + i) - 1, 0);
1437 monitor_printf (current_monitor->fill, memaddr, i, 0);
1439 monitor_expect_prompt (NULL, 0);
1446 /* Can't actually use long longs if VAL is an int (nice idea, though). */
1447 if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll)
1450 cmd = current_monitor->setmem.cmdll;
1454 if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl)
1457 cmd = current_monitor->setmem.cmdl;
1459 else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw)
1462 cmd = current_monitor->setmem.cmdw;
1467 cmd = current_monitor->setmem.cmdb;
1470 val = extract_unsigned_integer (myaddr, len);
1474 hostval = *(unsigned int *) myaddr;
1475 monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val);
1479 if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM)
1480 monitor_printf_noecho (cmd, memaddr, val);
1481 else if (current_monitor->flags & MO_SETMEM_INTERACTIVE)
1484 monitor_printf_noecho (cmd, memaddr);
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_even_block (CORE_ADDR memaddr, char *myaddr, int len)
1512 /* Enter the sub mode */
1513 monitor_printf (current_monitor->setmem.cmdl, memaddr);
1514 monitor_expect_prompt (NULL, 0);
1518 val = extract_unsigned_integer (myaddr, 4); /* REALLY */
1519 monitor_printf ("%x\r", val);
1523 monitor_debug (" @ %s\n", paddr (memaddr));
1524 /* If we wanted to, here we could validate the address */
1525 monitor_expect_prompt (NULL, 0);
1527 /* Now exit the sub mode */
1528 monitor_printf (current_monitor->getreg.term_cmd);
1529 monitor_expect_prompt (NULL, 0);
1535 monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len)
1541 /* Enter the sub mode */
1542 monitor_printf (current_monitor->setmem.cmdb, memaddr);
1543 monitor_expect_prompt (NULL, 0);
1547 monitor_printf ("%x\r", val);
1551 /* If we wanted to, here we could validate the address */
1552 monitor_expect_prompt (NULL, 0);
1555 /* Now exit the sub mode */
1556 monitor_printf (current_monitor->getreg.term_cmd);
1557 monitor_expect_prompt (NULL, 0);
1563 longlongendswap (unsigned char *a)
1572 *(a + i) = *(a + j);
1577 /* Format 32 chars of long long value, advance the pointer */
1578 static char *hexlate = "0123456789abcdef";
1580 longlong_hexchars (unsigned long long value,
1590 static unsigned char disbuf[8]; /* disassembly buffer */
1591 unsigned char *scan, *limit; /* loop controls */
1592 unsigned char c, nib;
1597 unsigned long long *dp;
1598 dp = (unsigned long long *) scan;
1601 longlongendswap (disbuf); /* FIXME: ONly on big endian hosts */
1602 while (scan < limit)
1604 c = *scan++; /* a byte of our long long value */
1610 leadzero = 0; /* henceforth we print even zeroes */
1612 nib = c >> 4; /* high nibble bits */
1613 *outbuff++ = hexlate[nib];
1614 nib = c & 0x0f; /* low nibble bits */
1615 *outbuff++ = hexlate[nib];
1619 } /* longlong_hexchars */
1623 /* I am only going to call this when writing virtual byte streams.
1624 Which possably entails endian conversions
1627 monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len)
1629 static char hexstage[20]; /* At least 16 digits required, plus null */
1634 llptr = (unsigned long long *) myaddr;
1637 monitor_printf (current_monitor->setmem.cmdll, memaddr);
1638 monitor_expect_prompt (NULL, 0);
1642 endstring = longlong_hexchars (*llptr, hexstage);
1643 *endstring = '\0'; /* NUll terminate for printf */
1644 monitor_printf ("%s\r", hexstage);
1648 /* If we wanted to, here we could validate the address */
1649 monitor_expect_prompt (NULL, 0);
1652 /* Now exit the sub mode */
1653 monitor_printf (current_monitor->getreg.term_cmd);
1654 monitor_expect_prompt (NULL, 0);
1660 /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
1661 /* This is for the large blocks of memory which may occur in downloading.
1662 And for monitors which use interactive entry,
1663 And for monitors which do not have other downloading methods.
1664 Without this, we will end up calling monitor_write_memory many times
1665 and do the entry and exit of the sub mode many times
1666 This currently assumes...
1667 MO_SETMEM_INTERACTIVE
1668 ! MO_NO_ECHO_ON_SETMEM
1669 To use this, the you have to patch the monitor_cmds block with
1670 this function. Otherwise, its not tuned up for use by all
1675 monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len)
1679 /* FIXME: This would be a good place to put the zero test */
1681 if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll)
1683 return monitor_write_memory_longlongs (memaddr, myaddr, len);
1690 written = monitor_write_even_block (memaddr, myaddr, len);
1691 /* Adjust calling parameters by written amount */
1697 written = monitor_write_memory_bytes (memaddr, myaddr, len);
1701 /* This is an alternate form of monitor_read_memory which is used for monitors
1702 which can only read a single byte/word/etc. at a time. */
1705 monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len)
1708 char membuf[sizeof (int) * 2 + 1];
1713 monitor_debug ("MON read single\n");
1715 /* Can't actually use long longs (nice idea, though). In fact, the
1716 call to strtoul below will fail if it tries to convert a value
1717 that's too big to fit in a long. */
1718 if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll)
1721 cmd = current_monitor->getmem.cmdll;
1725 if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl)
1728 cmd = current_monitor->getmem.cmdl;
1730 else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw)
1733 cmd = current_monitor->getmem.cmdw;
1738 cmd = current_monitor->getmem.cmdb;
1741 /* Send the examine command. */
1743 monitor_printf (cmd, memaddr);
1745 /* If RESP_DELIM is specified, we search for that as a leading
1746 delimiter for the memory value. Otherwise, we just start
1747 searching from the start of the buf. */
1749 if (current_monitor->getmem.resp_delim)
1751 monitor_debug ("EXP getmem.resp_delim\n");
1752 monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0);
1755 /* Now, read the appropriate number of hex digits for this loc,
1758 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1759 if (current_monitor->flags & MO_HEX_PREFIX)
1763 c = readchar (timeout);
1765 c = readchar (timeout);
1766 if ((c == '0') && ((c = readchar (timeout)) == 'x'))
1769 monitor_error ("monitor_read_memory_single",
1770 "bad response from monitor",
1771 memaddr, i, membuf, c);
1773 for (i = 0; i < len * 2; i++)
1779 c = readchar (timeout);
1785 monitor_error ("monitor_read_memory_single",
1786 "bad response from monitor",
1787 memaddr, i, membuf, c);
1793 membuf[i] = '\000'; /* terminate the number */
1795 /* If TERM is present, we wait for that to show up. Also, (if TERM is
1796 present), we will send TERM_CMD if that is present. In any case, we collect
1797 all of the output into buf, and then wait for the normal prompt. */
1799 if (current_monitor->getmem.term)
1801 monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */
1803 if (current_monitor->getmem.term_cmd)
1805 monitor_printf (current_monitor->getmem.term_cmd);
1806 monitor_expect_prompt (NULL, 0);
1810 monitor_expect_prompt (NULL, 0); /* get response */
1813 val = strtoul (membuf, &p, 16);
1815 if (val == 0 && membuf == p)
1816 monitor_error ("monitor_read_memory_single",
1817 "bad value from monitor",
1818 memaddr, 0, membuf, 0);
1820 /* supply register stores in target byte order, so swap here */
1822 store_unsigned_integer (myaddr, len, val);
1827 /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
1828 memory at MEMADDR. Returns length moved. Currently, we do no more
1829 than 16 bytes at a time. */
1832 monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
1843 monitor_debug ("Zero length call to monitor_read_memory\n");
1847 monitor_debug ("MON read block ta(%s) ha(%lx) %d\n",
1848 paddr_nz (memaddr), (long) myaddr, len);
1850 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
1851 memaddr = ADDR_BITS_REMOVE (memaddr);
1853 if (current_monitor->flags & MO_GETMEM_READ_SINGLE)
1854 return monitor_read_memory_single (memaddr, myaddr, len);
1856 len = min (len, 16);
1858 /* Some dumpers align the first data with the preceeding 16
1859 byte boundary. Some print blanks and start at the
1860 requested boundary. EXACT_DUMPADDR
1863 dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR)
1864 ? memaddr : memaddr & ~0x0f;
1866 /* See if xfer would cross a 16 byte boundary. If so, clip it. */
1867 if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0)
1868 len = ((memaddr + len) & ~0xf) - memaddr;
1870 /* send the memory examine command */
1872 if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE)
1873 monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len);
1874 else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY)
1875 monitor_printf (current_monitor->getmem.cmdb, dumpaddr);
1877 monitor_printf (current_monitor->getmem.cmdb, memaddr, len);
1879 /* If TERM is present, we wait for that to show up. Also, (if TERM
1880 is present), we will send TERM_CMD if that is present. In any
1881 case, we collect all of the output into buf, and then wait for
1882 the normal prompt. */
1884 if (current_monitor->getmem.term)
1886 resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */
1889 monitor_error ("monitor_read_memory",
1890 "excessive response from monitor",
1891 memaddr, resp_len, buf, 0);
1893 if (current_monitor->getmem.term_cmd)
1895 SERIAL_WRITE (monitor_desc, current_monitor->getmem.term_cmd,
1896 strlen (current_monitor->getmem.term_cmd));
1897 monitor_expect_prompt (NULL, 0);
1901 resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */
1905 /* If RESP_DELIM is specified, we search for that as a leading
1906 delimiter for the values. Otherwise, we just start searching
1907 from the start of the buf. */
1909 if (current_monitor->getmem.resp_delim)
1912 struct re_registers resp_strings;
1913 monitor_debug ("MON getmem.resp_delim %s\n", current_monitor->getmem.resp_delim);
1915 memset (&resp_strings, 0, sizeof (struct re_registers));
1917 retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp,
1921 monitor_error ("monitor_read_memory",
1922 "bad response from monitor",
1923 memaddr, resp_len, buf, 0);
1925 p += resp_strings.end[0];
1927 p = strstr (p, current_monitor->getmem.resp_delim);
1929 monitor_error ("monitor_read_memory",
1930 "bad response from monitor",
1931 memaddr, resp_len, buf, 0);
1932 p += strlen (current_monitor->getmem.resp_delim);
1935 monitor_debug ("MON scanning %d ,%lx '%s'\n", len, (long) p, p);
1936 if (current_monitor->flags & MO_GETMEM_16_BOUNDARY)
1944 while (!(c == '\000' || c == '\n' || c == '\r') && i > 0)
1948 if ((dumpaddr >= memaddr) && (i > 0))
1950 val = fromhex (c) * 16 + fromhex (*(p + 1));
1952 if (monitor_debug_p || remote_debug)
1953 fprintf_unfiltered (gdb_stdlog, "[%02x]", val);
1960 ++p; /* skip a blank or other non hex char */
1964 error ("Failed to read via monitor");
1965 if (monitor_debug_p || remote_debug)
1966 fprintf_unfiltered (gdb_stdlog, "\n");
1967 return fetched; /* Return the number of bytes actually read */
1969 monitor_debug ("MON scanning bytes\n");
1971 for (i = len; i > 0; i--)
1973 /* Skip non-hex chars, but bomb on end of string and newlines */
1980 if (*p == '\000' || *p == '\n' || *p == '\r')
1981 monitor_error ("monitor_read_memory",
1982 "badly terminated response from monitor",
1983 memaddr, resp_len, buf, 0);
1987 val = strtoul (p, &p1, 16);
1989 if (val == 0 && p == p1)
1990 monitor_error ("monitor_read_memory",
1991 "bad value from monitor",
1992 memaddr, resp_len, buf, 0);
2006 monitor_xfer_memory (memaddr, myaddr, len, write, target)
2011 struct target_ops *target; /* ignored */
2013 return dcache_xfer_memory (remote_dcache, memaddr, myaddr, len, write);
2019 return; /* ignore attempts to kill target system */
2022 /* All we actually do is set the PC to the start address of exec_bfd, and start
2023 the program at that point. */
2026 monitor_create_inferior (char *exec_file, char *args, char **env)
2028 if (args && (*args != '\000'))
2029 error ("Args are not supported by the monitor.");
2032 clear_proceed_status ();
2033 proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0);
2036 /* Clean up when a program exits.
2037 The program actually lives on in the remote processor's RAM, and may be
2038 run again without a download. Don't leave it full of breakpoint
2042 monitor_mourn_inferior (void)
2044 unpush_target (targ_ops);
2045 generic_mourn_inferior (); /* Do all the proper things now */
2048 /* Tell the monitor to add a breakpoint. */
2051 monitor_insert_breakpoint (CORE_ADDR addr, char *shadow)
2057 monitor_debug ("MON inst bkpt %s\n", paddr (addr));
2058 if (current_monitor->set_break == NULL)
2059 error ("No set_break defined for this monitor");
2061 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
2062 addr = ADDR_BITS_REMOVE (addr);
2064 /* Determine appropriate breakpoint size for this address. */
2065 bp = memory_breakpoint_from_pc (&addr, &bplen);
2067 for (i = 0; i < current_monitor->num_breakpoints; i++)
2069 if (breakaddr[i] == 0)
2071 breakaddr[i] = addr;
2072 monitor_read_memory (addr, shadow, bplen);
2073 monitor_printf (current_monitor->set_break, addr);
2074 monitor_expect_prompt (NULL, 0);
2079 error ("Too many breakpoints (> %d) for monitor.", current_monitor->num_breakpoints);
2082 /* Tell the monitor to remove a breakpoint. */
2085 monitor_remove_breakpoint (CORE_ADDR addr, char *shadow)
2089 monitor_debug ("MON rmbkpt %s\n", paddr (addr));
2090 if (current_monitor->clr_break == NULL)
2091 error ("No clr_break defined for this monitor");
2093 if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
2094 addr = ADDR_BITS_REMOVE (addr);
2096 for (i = 0; i < current_monitor->num_breakpoints; i++)
2098 if (breakaddr[i] == addr)
2101 /* some monitors remove breakpoints based on the address */
2102 if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR)
2103 monitor_printf (current_monitor->clr_break, addr);
2104 else if (current_monitor->flags & MO_CLR_BREAK_1_BASED)
2105 monitor_printf (current_monitor->clr_break, i + 1);
2107 monitor_printf (current_monitor->clr_break, i);
2108 monitor_expect_prompt (NULL, 0);
2112 fprintf_unfiltered (gdb_stderr,
2113 "Can't find breakpoint associated with 0x%s\n",
2118 /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
2119 an S-record. Return non-zero if the ACK is received properly. */
2122 monitor_wait_srec_ack (void)
2126 if (current_monitor->flags & MO_SREC_ACK_PLUS)
2128 return (readchar (timeout) == '+');
2130 else if (current_monitor->flags & MO_SREC_ACK_ROTATE)
2132 /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
2133 if ((ch = readchar (1)) < 0)
2135 if ((ch = readchar (1)) < 0)
2137 if ((ch = readchar (1)) < 0)
2139 if ((ch = readchar (1)) < 0)
2145 /* monitor_load -- download a file. */
2148 monitor_load (char *file, int from_tty)
2150 dcache_flush (remote_dcache);
2151 monitor_debug ("MON load\n");
2153 if (current_monitor->load_routine)
2154 current_monitor->load_routine (monitor_desc, file, hashmark);
2156 { /* The default is ascii S-records */
2158 unsigned long load_offset;
2161 /* enable user to specify address for downloading as 2nd arg to load */
2162 n = sscanf (file, "%s 0x%lx", buf, &load_offset);
2168 monitor_printf (current_monitor->load);
2169 if (current_monitor->loadresp)
2170 monitor_expect (current_monitor->loadresp, NULL, 0);
2172 load_srec (monitor_desc, file, (bfd_vma) load_offset,
2173 32, SREC_ALL, hashmark,
2174 current_monitor->flags & MO_SREC_ACK ?
2175 monitor_wait_srec_ack : NULL);
2177 monitor_expect_prompt (NULL, 0);
2180 /* Finally, make the PC point at the start address */
2183 write_pc (bfd_get_start_address (exec_bfd));
2185 inferior_pid = 0; /* No process now */
2187 /* This is necessary because many things were based on the PC at the time that
2188 we attached to the monitor, which is no longer valid now that we have loaded
2189 new code (and just changed the PC). Another way to do this might be to call
2190 normal_stop, except that the stack may not be valid, and things would get
2191 horribly confused... */
2193 clear_symtab_users ();
2199 monitor_debug ("MON stop\n");
2200 if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0)
2201 SERIAL_SEND_BREAK (monitor_desc);
2202 if (current_monitor->stop)
2203 monitor_printf_noecho (current_monitor->stop);
2206 /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
2207 in OUTPUT until the prompt is seen. FIXME: We read the characters
2208 ourseleves here cause of a nasty echo. */
2211 monitor_rcmd (char *command,
2212 struct ui_file *outbuf)
2218 if (monitor_desc == NULL)
2219 error ("monitor target not open.");
2221 p = current_monitor->prompt;
2223 /* Send the command. Note that if no args were supplied, then we're
2224 just sending the monitor a newline, which is sometimes useful. */
2226 monitor_printf ("%s\r", (command ? command : ""));
2228 resp_len = monitor_expect_prompt (buf, sizeof buf);
2230 fputs_unfiltered (buf, outbuf); /* Output the response */
2233 /* Convert hex digit A to a number. */
2239 if (a >= '0' && a <= '9')
2241 if (a >= 'a' && a <= 'f')
2242 return a - 'a' + 10;
2243 if (a >= 'A' && a <= 'F')
2244 return a - 'A' + 10;
2246 error ("Reply contains invalid hex digit 0x%x", a);
2251 monitor_get_dev_name (void)
2256 static struct target_ops monitor_ops;
2259 init_base_monitor_ops (void)
2261 monitor_ops.to_shortname = NULL;
2262 monitor_ops.to_longname = NULL;
2263 monitor_ops.to_doc = NULL;
2264 monitor_ops.to_open = NULL;
2265 monitor_ops.to_close = monitor_close;
2266 monitor_ops.to_attach = NULL;
2267 monitor_ops.to_post_attach = NULL;
2268 monitor_ops.to_require_attach = NULL;
2269 monitor_ops.to_detach = monitor_detach;
2270 monitor_ops.to_require_detach = NULL;
2271 monitor_ops.to_resume = monitor_resume;
2272 monitor_ops.to_wait = monitor_wait;
2273 monitor_ops.to_post_wait = NULL;
2274 monitor_ops.to_fetch_registers = monitor_fetch_registers;
2275 monitor_ops.to_store_registers = monitor_store_registers;
2276 monitor_ops.to_prepare_to_store = monitor_prepare_to_store;
2277 monitor_ops.to_xfer_memory = monitor_xfer_memory;
2278 monitor_ops.to_files_info = monitor_files_info;
2279 monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint;
2280 monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint;
2281 monitor_ops.to_terminal_init = 0;
2282 monitor_ops.to_terminal_inferior = 0;
2283 monitor_ops.to_terminal_ours_for_output = 0;
2284 monitor_ops.to_terminal_ours = 0;
2285 monitor_ops.to_terminal_info = 0;
2286 monitor_ops.to_kill = monitor_kill;
2287 monitor_ops.to_load = monitor_load;
2288 monitor_ops.to_lookup_symbol = 0;
2289 monitor_ops.to_create_inferior = monitor_create_inferior;
2290 monitor_ops.to_post_startup_inferior = NULL;
2291 monitor_ops.to_acknowledge_created_inferior = NULL;
2292 monitor_ops.to_clone_and_follow_inferior = NULL;
2293 monitor_ops.to_post_follow_inferior_by_clone = NULL;
2294 monitor_ops.to_insert_fork_catchpoint = NULL;
2295 monitor_ops.to_remove_fork_catchpoint = NULL;
2296 monitor_ops.to_insert_vfork_catchpoint = NULL;
2297 monitor_ops.to_remove_vfork_catchpoint = NULL;
2298 monitor_ops.to_has_forked = NULL;
2299 monitor_ops.to_has_vforked = NULL;
2300 monitor_ops.to_can_follow_vfork_prior_to_exec = NULL;
2301 monitor_ops.to_post_follow_vfork = NULL;
2302 monitor_ops.to_insert_exec_catchpoint = NULL;
2303 monitor_ops.to_remove_exec_catchpoint = NULL;
2304 monitor_ops.to_has_execd = NULL;
2305 monitor_ops.to_reported_exec_events_per_exec_call = NULL;
2306 monitor_ops.to_has_exited = NULL;
2307 monitor_ops.to_mourn_inferior = monitor_mourn_inferior;
2308 monitor_ops.to_can_run = 0;
2309 monitor_ops.to_notice_signals = 0;
2310 monitor_ops.to_thread_alive = 0;
2311 monitor_ops.to_stop = monitor_stop;
2312 monitor_ops.to_rcmd = monitor_rcmd;
2313 monitor_ops.to_pid_to_exec_file = NULL;
2314 monitor_ops.to_core_file_to_sym_file = NULL;
2315 monitor_ops.to_stratum = process_stratum;
2316 monitor_ops.DONT_USE = 0;
2317 monitor_ops.to_has_all_memory = 1;
2318 monitor_ops.to_has_memory = 1;
2319 monitor_ops.to_has_stack = 1;
2320 monitor_ops.to_has_registers = 1;
2321 monitor_ops.to_has_execution = 1;
2322 monitor_ops.to_sections = 0;
2323 monitor_ops.to_sections_end = 0;
2324 monitor_ops.to_magic = OPS_MAGIC;
2325 } /* init_base_monitor_ops */
2327 /* Init the target_ops structure pointed at by OPS */
2330 init_monitor_ops (struct target_ops *ops)
2332 if (monitor_ops.to_magic != OPS_MAGIC)
2333 init_base_monitor_ops ();
2335 memcpy (ops, &monitor_ops, sizeof monitor_ops);
2338 /* Define additional commands that are usually only used by monitors. */
2341 _initialize_remote_monitors (void)
2343 init_base_monitor_ops ();
2344 add_show_from_set (add_set_cmd ("hash", no_class, var_boolean,
2346 "Set display of activity while downloading a file.\n\
2347 When enabled, a hashmark \'#\' is displayed.",
2352 (add_set_cmd ("monitor", no_class, var_zinteger,
2353 (char *) &monitor_debug_p,
2354 "Set debugging of remote monitor communication.\n\
2355 When enabled, communication between GDB and the remote monitor\n\
2356 is displayed.", &setdebuglist),