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 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 (void);
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
)
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_thread_silent (inferior_ptid
);
822 /* Give monitor_wait something to read */
824 monitor_printf (current_monitor
->line_term
);
826 start_remote (from_tty
);
829 /* Close out all files and local state before this target loses
833 monitor_close (int quitting
)
836 serial_close (monitor_desc
);
838 /* Free breakpoint memory */
839 if (breakaddr
!= NULL
)
847 delete_thread_silent (monitor_ptid
);
850 /* Terminate the open connection to the remote debugger. Use this
851 when you want to detach and do something else with your gdb. */
854 monitor_detach (char *args
, int from_tty
)
856 pop_target (); /* calls monitor_close to do the real work */
858 printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname
);
861 /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
864 monitor_supply_register (struct regcache
*regcache
, int regno
, char *valstr
)
867 unsigned char regbuf
[MAX_REGISTER_SIZE
];
872 while (p
&& *p
!= '\0')
874 if (*p
== '\r' || *p
== '\n')
885 if (!isxdigit (*p
) && *p
!= 'x')
891 val
+= fromhex (*p
++);
893 monitor_debug ("Supplying Register %d %s\n", regno
, valstr
);
895 if (val
== 0 && valstr
== p
)
896 error (_("monitor_supply_register (%d): bad value from monitor: %s."),
899 /* supply register stores in target byte order, so swap here */
901 store_unsigned_integer (regbuf
,
902 register_size (get_regcache_arch (regcache
), regno
),
905 regcache_raw_supply (regcache
, regno
, regbuf
);
910 /* Tell the remote machine to resume. */
913 monitor_resume (ptid_t ptid
, int step
, enum target_signal sig
)
915 /* Some monitors require a different command when starting a program */
916 monitor_debug ("MON resume\n");
917 if (current_monitor
->flags
& MO_RUN_FIRST_TIME
&& first_time
== 1)
920 monitor_printf ("run\r");
921 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
926 monitor_printf (current_monitor
->step
);
929 if (current_monitor
->continue_hook
)
930 (*current_monitor
->continue_hook
) ();
932 monitor_printf (current_monitor
->cont
);
933 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
938 /* Parse the output of a register dump command. A monitor specific
939 regexp is used to extract individual register descriptions of the
940 form REG=VAL. Each description is split up into a name and a value
941 string which are passed down to monitor specific code. */
944 parse_register_dump (struct regcache
*regcache
, char *buf
, int len
)
946 monitor_debug ("MON Parsing register dump\n");
949 int regnamelen
, vallen
;
951 /* Element 0 points to start of register name, and element 1
952 points to the start of the register value. */
953 struct re_registers register_strings
;
955 memset (®ister_strings
, 0, sizeof (struct re_registers
));
957 if (re_search (®ister_pattern
, buf
, len
, 0, len
,
958 ®ister_strings
) == -1)
961 regnamelen
= register_strings
.end
[1] - register_strings
.start
[1];
962 regname
= buf
+ register_strings
.start
[1];
963 vallen
= register_strings
.end
[2] - register_strings
.start
[2];
964 val
= buf
+ register_strings
.start
[2];
966 current_monitor
->supply_register (regcache
, regname
, regnamelen
,
969 buf
+= register_strings
.end
[0];
970 len
-= register_strings
.end
[0];
974 /* Send ^C to target to halt it. Target will respond, and send us a
978 monitor_interrupt (int signo
)
980 /* If this doesn't work, try more severe steps. */
981 signal (signo
, monitor_interrupt_twice
);
983 if (monitor_debug_p
|| remote_debug
)
984 fprintf_unfiltered (gdb_stdlog
, "monitor_interrupt called\n");
989 /* The user typed ^C twice. */
992 monitor_interrupt_twice (int signo
)
994 signal (signo
, ofunc
);
996 monitor_interrupt_query ();
998 signal (signo
, monitor_interrupt
);
1001 /* Ask the user what to do when an interrupt is received. */
1004 monitor_interrupt_query (void)
1006 target_terminal_ours ();
1008 if (query ("Interrupted while waiting for the program.\n\
1009 Give up (and stop debugging it)? "))
1011 target_mourn_inferior ();
1012 deprecated_throw_reason (RETURN_QUIT
);
1015 target_terminal_inferior ();
1019 monitor_wait_cleanup (void *old_timeout
)
1021 timeout
= *(int *) old_timeout
;
1022 signal (SIGINT
, ofunc
);
1023 in_monitor_wait
= 0;
1029 monitor_wait_filter (char *buf
,
1032 struct target_waitstatus
*status
)
1037 resp_len
= monitor_expect_prompt (buf
, bufmax
);
1038 *ext_resp_len
= resp_len
;
1041 fprintf_unfiltered (gdb_stderr
, "monitor_wait: excessive response from monitor: %s.", buf
);
1043 while (resp_len
< 0);
1045 /* Print any output characters that were preceded by ^O. */
1046 /* FIXME - This would be great as a user settabgle flag */
1047 if (monitor_debug_p
|| remote_debug
1048 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1052 for (i
= 0; i
< resp_len
- 1; i
++)
1054 putchar_unfiltered (buf
[++i
]);
1060 /* Wait until the remote machine stops, then return, storing status in
1061 status just as `wait' would. */
1064 monitor_wait (ptid_t ptid
, struct target_waitstatus
*status
)
1066 int old_timeout
= timeout
;
1067 char buf
[TARGET_BUF_SIZE
];
1069 struct cleanup
*old_chain
;
1071 status
->kind
= TARGET_WAITKIND_EXITED
;
1072 status
->value
.integer
= 0;
1074 old_chain
= make_cleanup (monitor_wait_cleanup
, &old_timeout
);
1075 monitor_debug ("MON wait\n");
1078 /* This is somthing other than a maintenance command */
1079 in_monitor_wait
= 1;
1080 timeout
= watchdog
> 0 ? watchdog
: -1;
1082 timeout
= -1; /* Don't time out -- user program is running. */
1085 ofunc
= (void (*)()) signal (SIGINT
, monitor_interrupt
);
1087 if (current_monitor
->wait_filter
)
1088 (*current_monitor
->wait_filter
) (buf
, sizeof (buf
), &resp_len
, status
);
1090 monitor_wait_filter (buf
, sizeof (buf
), &resp_len
, status
);
1092 #if 0 /* Transferred to monitor wait filter */
1095 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1098 fprintf_unfiltered (gdb_stderr
, "monitor_wait: excessive response from monitor: %s.", buf
);
1100 while (resp_len
< 0);
1102 /* Print any output characters that were preceded by ^O. */
1103 /* FIXME - This would be great as a user settabgle flag */
1104 if (monitor_debug_p
|| remote_debug
1105 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1109 for (i
= 0; i
< resp_len
- 1; i
++)
1111 putchar_unfiltered (buf
[++i
]);
1115 signal (SIGINT
, ofunc
);
1117 timeout
= old_timeout
;
1119 if (dump_reg_flag
&& current_monitor
->dump_registers
)
1122 monitor_printf (current_monitor
->dump_registers
);
1123 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1126 if (current_monitor
->register_pattern
)
1127 parse_register_dump (get_current_regcache (), buf
, resp_len
);
1129 monitor_debug ("Wait fetching registers after stop\n");
1130 monitor_dump_regs (get_current_regcache ());
1133 status
->kind
= TARGET_WAITKIND_STOPPED
;
1134 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1136 discard_cleanups (old_chain
);
1138 in_monitor_wait
= 0;
1140 return inferior_ptid
;
1143 /* Fetch register REGNO, or all registers if REGNO is -1. Returns
1147 monitor_fetch_register (struct regcache
*regcache
, int regno
)
1154 regbuf
= alloca (MAX_REGISTER_SIZE
* 2 + 1);
1155 zerobuf
= alloca (MAX_REGISTER_SIZE
);
1156 memset (zerobuf
, 0, MAX_REGISTER_SIZE
);
1158 if (current_monitor
->regname
!= NULL
)
1159 name
= current_monitor
->regname (regno
);
1161 name
= current_monitor
->regnames
[regno
];
1162 monitor_debug ("MON fetchreg %d '%s'\n", regno
, name
? name
: "(null name)");
1164 if (!name
|| (*name
== '\0'))
1166 monitor_debug ("No register known for %d\n", regno
);
1167 regcache_raw_supply (regcache
, regno
, zerobuf
);
1171 /* send the register examine command */
1173 monitor_printf (current_monitor
->getreg
.cmd
, name
);
1175 /* If RESP_DELIM is specified, we search for that as a leading
1176 delimiter for the register value. Otherwise, we just start
1177 searching from the start of the buf. */
1179 if (current_monitor
->getreg
.resp_delim
)
1181 monitor_debug ("EXP getreg.resp_delim\n");
1182 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1183 /* Handle case of first 32 registers listed in pairs. */
1184 if (current_monitor
->flags
& MO_32_REGS_PAIRED
1185 && (regno
& 1) != 0 && regno
< 32)
1187 monitor_debug ("EXP getreg.resp_delim\n");
1188 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1192 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */
1193 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1196 c
= readchar (timeout
);
1198 c
= readchar (timeout
);
1199 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1202 error (_("Bad value returned from monitor while fetching register %x."),
1206 /* Read upto the maximum number of hex digits for this register, skipping
1207 spaces, but stop reading if something else is seen. Some monitors
1208 like to drop leading zeros. */
1210 for (i
= 0; i
< register_size (get_regcache_arch (regcache
), regno
) * 2; i
++)
1213 c
= readchar (timeout
);
1215 c
= readchar (timeout
);
1223 regbuf
[i
] = '\000'; /* terminate the number */
1224 monitor_debug ("REGVAL '%s'\n", regbuf
);
1226 /* If TERM is present, we wait for that to show up. Also, (if TERM
1227 is present), we will send TERM_CMD if that is present. In any
1228 case, we collect all of the output into buf, and then wait for
1229 the normal prompt. */
1231 if (current_monitor
->getreg
.term
)
1233 monitor_debug ("EXP getreg.term\n");
1234 monitor_expect (current_monitor
->getreg
.term
, NULL
, 0); /* get response */
1237 if (current_monitor
->getreg
.term_cmd
)
1239 monitor_debug ("EMIT getreg.term.cmd\n");
1240 monitor_printf (current_monitor
->getreg
.term_cmd
);
1242 if (!current_monitor
->getreg
.term
|| /* Already expected or */
1243 current_monitor
->getreg
.term_cmd
) /* ack expected */
1244 monitor_expect_prompt (NULL
, 0); /* get response */
1246 monitor_supply_register (regcache
, regno
, regbuf
);
1249 /* Sometimes, it takes several commands to dump the registers */
1250 /* This is a primitive for use by variations of monitor interfaces in
1251 case they need to compose the operation.
1254 monitor_dump_reg_block (struct regcache
*regcache
, char *block_cmd
)
1256 char buf
[TARGET_BUF_SIZE
];
1258 monitor_printf (block_cmd
);
1259 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1260 parse_register_dump (regcache
, buf
, resp_len
);
1265 /* Read the remote registers into the block regs. */
1266 /* Call the specific function if it has been provided */
1269 monitor_dump_regs (struct regcache
*regcache
)
1271 char buf
[TARGET_BUF_SIZE
];
1273 if (current_monitor
->dumpregs
)
1274 (*(current_monitor
->dumpregs
)) (regcache
); /* call supplied function */
1275 else if (current_monitor
->dump_registers
) /* default version */
1277 monitor_printf (current_monitor
->dump_registers
);
1278 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1279 parse_register_dump (regcache
, buf
, resp_len
);
1282 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check")); /* Need some way to read registers */
1286 monitor_fetch_registers (struct regcache
*regcache
, int regno
)
1288 monitor_debug ("MON fetchregs\n");
1289 if (current_monitor
->getreg
.cmd
)
1293 monitor_fetch_register (regcache
, regno
);
1297 for (regno
= 0; regno
< gdbarch_num_regs (get_regcache_arch (regcache
));
1299 monitor_fetch_register (regcache
, regno
);
1303 monitor_dump_regs (regcache
);
1307 /* Store register REGNO, or all if REGNO == 0. Return errno value. */
1310 monitor_store_register (struct regcache
*regcache
, int regno
)
1315 if (current_monitor
->regname
!= NULL
)
1316 name
= current_monitor
->regname (regno
);
1318 name
= current_monitor
->regnames
[regno
];
1320 if (!name
|| (*name
== '\0'))
1322 monitor_debug ("MON Cannot store unknown register\n");
1326 regcache_cooked_read_unsigned (regcache
, regno
, &val
);
1327 monitor_debug ("MON storeg %d %s\n", regno
,
1329 register_size (get_regcache_arch (regcache
), regno
)));
1331 /* send the register deposit command */
1333 if (current_monitor
->flags
& MO_REGISTER_VALUE_FIRST
)
1334 monitor_printf (current_monitor
->setreg
.cmd
, val
, name
);
1335 else if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1336 monitor_printf (current_monitor
->setreg
.cmd
, name
);
1338 monitor_printf (current_monitor
->setreg
.cmd
, name
, val
);
1340 if (current_monitor
->setreg
.resp_delim
)
1342 monitor_debug ("EXP setreg.resp_delim\n");
1343 monitor_expect_regexp (&setreg_resp_delim_pattern
, NULL
, 0);
1344 if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1345 monitor_printf ("%s\r", paddr_nz (val
));
1347 if (current_monitor
->setreg
.term
)
1349 monitor_debug ("EXP setreg.term\n");
1350 monitor_expect (current_monitor
->setreg
.term
, NULL
, 0);
1351 if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1352 monitor_printf ("%s\r", paddr_nz (val
));
1353 monitor_expect_prompt (NULL
, 0);
1356 monitor_expect_prompt (NULL
, 0);
1357 if (current_monitor
->setreg
.term_cmd
) /* Mode exit required */
1359 monitor_debug ("EXP setreg_termcmd\n");
1360 monitor_printf ("%s", current_monitor
->setreg
.term_cmd
);
1361 monitor_expect_prompt (NULL
, 0);
1363 } /* monitor_store_register */
1365 /* Store the remote registers. */
1368 monitor_store_registers (struct regcache
*regcache
, int regno
)
1372 monitor_store_register (regcache
, regno
);
1376 for (regno
= 0; regno
< gdbarch_num_regs (get_regcache_arch (regcache
));
1378 monitor_store_register (regcache
, regno
);
1381 /* Get ready to modify the registers array. On machines which store
1382 individual registers, this doesn't need to do anything. On machines
1383 which store all the registers in one fell swoop, this makes sure
1384 that registers contains all the registers from the program being
1388 monitor_prepare_to_store (struct regcache
*regcache
)
1390 /* Do nothing, since we can store individual regs */
1394 monitor_files_info (struct target_ops
*ops
)
1396 printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name
, baud_rate
);
1400 monitor_write_memory (CORE_ADDR memaddr
, char *myaddr
, int len
)
1402 unsigned int val
, hostval
;
1406 monitor_debug ("MON write %d %s\n", len
, paddr (memaddr
));
1408 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1409 memaddr
= gdbarch_addr_bits_remove (current_gdbarch
, memaddr
);
1411 /* Use memory fill command for leading 0 bytes. */
1413 if (current_monitor
->fill
)
1415 for (i
= 0; i
< len
; i
++)
1419 if (i
> 4) /* More than 4 zeros is worth doing */
1421 monitor_debug ("MON FILL %d\n", i
);
1422 if (current_monitor
->flags
& MO_FILL_USES_ADDR
)
1423 monitor_printf (current_monitor
->fill
, memaddr
, (memaddr
+ i
) - 1, 0);
1425 monitor_printf (current_monitor
->fill
, memaddr
, i
, 0);
1427 monitor_expect_prompt (NULL
, 0);
1434 /* Can't actually use long longs if VAL is an int (nice idea, though). */
1435 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->setmem
.cmdll
)
1438 cmd
= current_monitor
->setmem
.cmdll
;
1442 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->setmem
.cmdl
)
1445 cmd
= current_monitor
->setmem
.cmdl
;
1447 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->setmem
.cmdw
)
1450 cmd
= current_monitor
->setmem
.cmdw
;
1455 cmd
= current_monitor
->setmem
.cmdb
;
1458 val
= extract_unsigned_integer (myaddr
, len
);
1462 hostval
= *(unsigned int *) myaddr
;
1463 monitor_debug ("Hostval(%08x) val(%08x)\n", hostval
, val
);
1467 if (current_monitor
->flags
& MO_NO_ECHO_ON_SETMEM
)
1468 monitor_printf_noecho (cmd
, memaddr
, val
);
1469 else if (current_monitor
->flags
& MO_SETMEM_INTERACTIVE
)
1472 monitor_printf_noecho (cmd
, memaddr
);
1474 if (current_monitor
->setmem
.resp_delim
)
1476 monitor_debug ("EXP setmem.resp_delim");
1477 monitor_expect_regexp (&setmem_resp_delim_pattern
, NULL
, 0);
1478 monitor_printf ("%x\r", val
);
1480 if (current_monitor
->setmem
.term
)
1482 monitor_debug ("EXP setmem.term");
1483 monitor_expect (current_monitor
->setmem
.term
, NULL
, 0);
1484 monitor_printf ("%x\r", val
);
1486 if (current_monitor
->setmem
.term_cmd
)
1487 { /* Emit this to get out of the memory editing state */
1488 monitor_printf ("%s", current_monitor
->setmem
.term_cmd
);
1489 /* Drop through to expecting a prompt */
1493 monitor_printf (cmd
, memaddr
, val
);
1495 monitor_expect_prompt (NULL
, 0);
1502 monitor_write_memory_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
1508 /* Enter the sub mode */
1509 monitor_printf (current_monitor
->setmem
.cmdb
, memaddr
);
1510 monitor_expect_prompt (NULL
, 0);
1514 monitor_printf ("%x\r", val
);
1518 /* If we wanted to, here we could validate the address */
1519 monitor_expect_prompt (NULL
, 0);
1522 /* Now exit the sub mode */
1523 monitor_printf (current_monitor
->getreg
.term_cmd
);
1524 monitor_expect_prompt (NULL
, 0);
1530 longlongendswap (unsigned char *a
)
1539 *(a
+ i
) = *(a
+ j
);
1544 /* Format 32 chars of long long value, advance the pointer */
1545 static char *hexlate
= "0123456789abcdef";
1547 longlong_hexchars (unsigned long long value
,
1557 static unsigned char disbuf
[8]; /* disassembly buffer */
1558 unsigned char *scan
, *limit
; /* loop controls */
1559 unsigned char c
, nib
;
1564 unsigned long long *dp
;
1565 dp
= (unsigned long long *) scan
;
1568 longlongendswap (disbuf
); /* FIXME: ONly on big endian hosts */
1569 while (scan
< limit
)
1571 c
= *scan
++; /* a byte of our long long value */
1577 leadzero
= 0; /* henceforth we print even zeroes */
1579 nib
= c
>> 4; /* high nibble bits */
1580 *outbuff
++ = hexlate
[nib
];
1581 nib
= c
& 0x0f; /* low nibble bits */
1582 *outbuff
++ = hexlate
[nib
];
1586 } /* longlong_hexchars */
1590 /* I am only going to call this when writing virtual byte streams.
1591 Which possably entails endian conversions
1594 monitor_write_memory_longlongs (CORE_ADDR memaddr
, char *myaddr
, int len
)
1596 static char hexstage
[20]; /* At least 16 digits required, plus null */
1601 llptr
= (unsigned long long *) myaddr
;
1604 monitor_printf (current_monitor
->setmem
.cmdll
, memaddr
);
1605 monitor_expect_prompt (NULL
, 0);
1609 endstring
= longlong_hexchars (*llptr
, hexstage
);
1610 *endstring
= '\0'; /* NUll terminate for printf */
1611 monitor_printf ("%s\r", hexstage
);
1615 /* If we wanted to, here we could validate the address */
1616 monitor_expect_prompt (NULL
, 0);
1619 /* Now exit the sub mode */
1620 monitor_printf (current_monitor
->getreg
.term_cmd
);
1621 monitor_expect_prompt (NULL
, 0);
1627 /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
1628 /* This is for the large blocks of memory which may occur in downloading.
1629 And for monitors which use interactive entry,
1630 And for monitors which do not have other downloading methods.
1631 Without this, we will end up calling monitor_write_memory many times
1632 and do the entry and exit of the sub mode many times
1633 This currently assumes...
1634 MO_SETMEM_INTERACTIVE
1635 ! MO_NO_ECHO_ON_SETMEM
1636 To use this, the you have to patch the monitor_cmds block with
1637 this function. Otherwise, its not tuned up for use by all
1642 monitor_write_memory_block (CORE_ADDR memaddr
, char *myaddr
, int len
)
1646 /* FIXME: This would be a good place to put the zero test */
1648 if ((len
> 8) && (((len
& 0x07)) == 0) && current_monitor
->setmem
.cmdll
)
1650 return monitor_write_memory_longlongs (memaddr
, myaddr
, len
);
1653 written
= monitor_write_memory_bytes (memaddr
, myaddr
, len
);
1657 /* This is an alternate form of monitor_read_memory which is used for monitors
1658 which can only read a single byte/word/etc. at a time. */
1661 monitor_read_memory_single (CORE_ADDR memaddr
, char *myaddr
, int len
)
1664 char membuf
[sizeof (int) * 2 + 1];
1668 monitor_debug ("MON read single\n");
1670 /* Can't actually use long longs (nice idea, though). In fact, the
1671 call to strtoul below will fail if it tries to convert a value
1672 that's too big to fit in a long. */
1673 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->getmem
.cmdll
)
1676 cmd
= current_monitor
->getmem
.cmdll
;
1680 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->getmem
.cmdl
)
1683 cmd
= current_monitor
->getmem
.cmdl
;
1685 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->getmem
.cmdw
)
1688 cmd
= current_monitor
->getmem
.cmdw
;
1693 cmd
= current_monitor
->getmem
.cmdb
;
1696 /* Send the examine command. */
1698 monitor_printf (cmd
, memaddr
);
1700 /* If RESP_DELIM is specified, we search for that as a leading
1701 delimiter for the memory value. Otherwise, we just start
1702 searching from the start of the buf. */
1704 if (current_monitor
->getmem
.resp_delim
)
1706 monitor_debug ("EXP getmem.resp_delim\n");
1707 monitor_expect_regexp (&getmem_resp_delim_pattern
, NULL
, 0);
1710 /* Now, read the appropriate number of hex digits for this loc,
1713 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1714 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1718 c
= readchar (timeout
);
1720 c
= readchar (timeout
);
1721 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1724 monitor_error ("monitor_read_memory_single",
1725 "bad response from monitor",
1726 memaddr
, 0, NULL
, 0);
1731 for (i
= 0; i
< len
* 2; i
++)
1737 c
= readchar (timeout
);
1743 monitor_error ("monitor_read_memory_single",
1744 "bad response from monitor",
1745 memaddr
, i
, membuf
, 0);
1749 membuf
[i
] = '\000'; /* terminate the number */
1752 /* If TERM is present, we wait for that to show up. Also, (if TERM is
1753 present), we will send TERM_CMD if that is present. In any case, we collect
1754 all of the output into buf, and then wait for the normal prompt. */
1756 if (current_monitor
->getmem
.term
)
1758 monitor_expect (current_monitor
->getmem
.term
, NULL
, 0); /* get response */
1760 if (current_monitor
->getmem
.term_cmd
)
1762 monitor_printf (current_monitor
->getmem
.term_cmd
);
1763 monitor_expect_prompt (NULL
, 0);
1767 monitor_expect_prompt (NULL
, 0); /* get response */
1770 val
= strtoul (membuf
, &p
, 16);
1772 if (val
== 0 && membuf
== p
)
1773 monitor_error ("monitor_read_memory_single",
1774 "bad value from monitor",
1775 memaddr
, 0, membuf
, 0);
1777 /* supply register stores in target byte order, so swap here */
1779 store_unsigned_integer (myaddr
, len
, val
);
1784 /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
1785 memory at MEMADDR. Returns length moved. Currently, we do no more
1786 than 16 bytes at a time. */
1789 monitor_read_memory (CORE_ADDR memaddr
, char *myaddr
, int len
)
1800 monitor_debug ("Zero length call to monitor_read_memory\n");
1804 monitor_debug ("MON read block ta(%s) ha(%lx) %d\n",
1805 paddr_nz (memaddr
), (long) myaddr
, len
);
1807 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1808 memaddr
= gdbarch_addr_bits_remove (current_gdbarch
, memaddr
);
1810 if (current_monitor
->flags
& MO_GETMEM_READ_SINGLE
)
1811 return monitor_read_memory_single (memaddr
, myaddr
, len
);
1813 len
= min (len
, 16);
1815 /* Some dumpers align the first data with the preceeding 16
1816 byte boundary. Some print blanks and start at the
1817 requested boundary. EXACT_DUMPADDR
1820 dumpaddr
= (current_monitor
->flags
& MO_EXACT_DUMPADDR
)
1821 ? memaddr
: memaddr
& ~0x0f;
1823 /* See if xfer would cross a 16 byte boundary. If so, clip it. */
1824 if (((memaddr
^ (memaddr
+ len
- 1)) & ~0xf) != 0)
1825 len
= ((memaddr
+ len
) & ~0xf) - memaddr
;
1827 /* send the memory examine command */
1829 if (current_monitor
->flags
& MO_GETMEM_NEEDS_RANGE
)
1830 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, memaddr
+ len
);
1831 else if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1832 monitor_printf (current_monitor
->getmem
.cmdb
, dumpaddr
);
1834 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, len
);
1836 /* If TERM is present, we wait for that to show up. Also, (if TERM
1837 is present), we will send TERM_CMD if that is present. In any
1838 case, we collect all of the output into buf, and then wait for
1839 the normal prompt. */
1841 if (current_monitor
->getmem
.term
)
1843 resp_len
= monitor_expect (current_monitor
->getmem
.term
, buf
, sizeof buf
); /* get response */
1846 monitor_error ("monitor_read_memory",
1847 "excessive response from monitor",
1848 memaddr
, resp_len
, buf
, 0);
1850 if (current_monitor
->getmem
.term_cmd
)
1852 serial_write (monitor_desc
, current_monitor
->getmem
.term_cmd
,
1853 strlen (current_monitor
->getmem
.term_cmd
));
1854 monitor_expect_prompt (NULL
, 0);
1858 resp_len
= monitor_expect_prompt (buf
, sizeof buf
); /* get response */
1862 /* If RESP_DELIM is specified, we search for that as a leading
1863 delimiter for the values. Otherwise, we just start searching
1864 from the start of the buf. */
1866 if (current_monitor
->getmem
.resp_delim
)
1869 struct re_registers resp_strings
;
1870 monitor_debug ("MON getmem.resp_delim %s\n", current_monitor
->getmem
.resp_delim
);
1872 memset (&resp_strings
, 0, sizeof (struct re_registers
));
1874 retval
= re_search (&getmem_resp_delim_pattern
, p
, tmp
, 0, tmp
,
1878 monitor_error ("monitor_read_memory",
1879 "bad response from monitor",
1880 memaddr
, resp_len
, buf
, 0);
1882 p
+= resp_strings
.end
[0];
1884 p
= strstr (p
, current_monitor
->getmem
.resp_delim
);
1886 monitor_error ("monitor_read_memory",
1887 "bad response from monitor",
1888 memaddr
, resp_len
, buf
, 0);
1889 p
+= strlen (current_monitor
->getmem
.resp_delim
);
1892 monitor_debug ("MON scanning %d ,%lx '%s'\n", len
, (long) p
, p
);
1893 if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1901 while (!(c
== '\000' || c
== '\n' || c
== '\r') && i
> 0)
1905 if ((dumpaddr
>= memaddr
) && (i
> 0))
1907 val
= fromhex (c
) * 16 + fromhex (*(p
+ 1));
1909 if (monitor_debug_p
|| remote_debug
)
1910 fprintf_unfiltered (gdb_stdlog
, "[%02x]", val
);
1917 ++p
; /* skip a blank or other non hex char */
1921 error (_("Failed to read via monitor"));
1922 if (monitor_debug_p
|| remote_debug
)
1923 fprintf_unfiltered (gdb_stdlog
, "\n");
1924 return fetched
; /* Return the number of bytes actually read */
1926 monitor_debug ("MON scanning bytes\n");
1928 for (i
= len
; i
> 0; i
--)
1930 /* Skip non-hex chars, but bomb on end of string and newlines */
1937 if (*p
== '\000' || *p
== '\n' || *p
== '\r')
1938 monitor_error ("monitor_read_memory",
1939 "badly terminated response from monitor",
1940 memaddr
, resp_len
, buf
, 0);
1944 val
= strtoul (p
, &p1
, 16);
1946 if (val
== 0 && p
== p1
)
1947 monitor_error ("monitor_read_memory",
1948 "bad value from monitor",
1949 memaddr
, resp_len
, buf
, 0);
1962 /* Transfer LEN bytes between target address MEMADDR and GDB address
1963 MYADDR. Returns 0 for success, errno code for failure. TARGET is
1967 monitor_xfer_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
, int write
,
1968 struct mem_attrib
*attrib
, struct target_ops
*target
)
1974 if (current_monitor
->flags
& MO_HAS_BLOCKWRITES
)
1975 res
= monitor_write_memory_block(memaddr
, myaddr
, len
);
1977 res
= monitor_write_memory(memaddr
, myaddr
, len
);
1981 res
= monitor_read_memory(memaddr
, myaddr
, len
);
1990 return; /* ignore attempts to kill target system */
1993 /* All we actually do is set the PC to the start address of exec_bfd. */
1996 monitor_create_inferior (char *exec_file
, char *args
, char **env
,
1999 if (args
&& (*args
!= '\000'))
2000 error (_("Args are not supported by the monitor."));
2003 clear_proceed_status ();
2004 write_pc (bfd_get_start_address (exec_bfd
));
2007 /* Clean up when a program exits.
2008 The program actually lives on in the remote processor's RAM, and may be
2009 run again without a download. Don't leave it full of breakpoint
2013 monitor_mourn_inferior (void)
2015 unpush_target (targ_ops
);
2016 generic_mourn_inferior (); /* Do all the proper things now */
2017 delete_thread_silent (monitor_ptid
);
2020 /* Tell the monitor to add a breakpoint. */
2023 monitor_insert_breakpoint (struct bp_target_info
*bp_tgt
)
2025 CORE_ADDR addr
= bp_tgt
->placed_address
;
2027 const unsigned char *bp
;
2030 monitor_debug ("MON inst bkpt %s\n", paddr (addr
));
2031 if (current_monitor
->set_break
== NULL
)
2032 error (_("No set_break defined for this monitor"));
2034 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
2035 addr
= gdbarch_addr_bits_remove (current_gdbarch
, addr
);
2037 /* Determine appropriate breakpoint size for this address. */
2038 bp
= gdbarch_breakpoint_from_pc (current_gdbarch
, &addr
, &bplen
);
2039 bp_tgt
->placed_address
= addr
;
2040 bp_tgt
->placed_size
= bplen
;
2042 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2044 if (breakaddr
[i
] == 0)
2046 breakaddr
[i
] = addr
;
2047 monitor_printf (current_monitor
->set_break
, addr
);
2048 monitor_expect_prompt (NULL
, 0);
2053 error (_("Too many breakpoints (> %d) for monitor."), current_monitor
->num_breakpoints
);
2056 /* Tell the monitor to remove a breakpoint. */
2059 monitor_remove_breakpoint (struct bp_target_info
*bp_tgt
)
2061 CORE_ADDR addr
= bp_tgt
->placed_address
;
2064 monitor_debug ("MON rmbkpt %s\n", paddr (addr
));
2065 if (current_monitor
->clr_break
== NULL
)
2066 error (_("No clr_break defined for this monitor"));
2068 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2070 if (breakaddr
[i
] == addr
)
2073 /* some monitors remove breakpoints based on the address */
2074 if (current_monitor
->flags
& MO_CLR_BREAK_USES_ADDR
)
2075 monitor_printf (current_monitor
->clr_break
, addr
);
2076 else if (current_monitor
->flags
& MO_CLR_BREAK_1_BASED
)
2077 monitor_printf (current_monitor
->clr_break
, i
+ 1);
2079 monitor_printf (current_monitor
->clr_break
, i
);
2080 monitor_expect_prompt (NULL
, 0);
2084 fprintf_unfiltered (gdb_stderr
,
2085 "Can't find breakpoint associated with 0x%s\n",
2090 /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
2091 an S-record. Return non-zero if the ACK is received properly. */
2094 monitor_wait_srec_ack (void)
2098 if (current_monitor
->flags
& MO_SREC_ACK_PLUS
)
2100 return (readchar (timeout
) == '+');
2102 else if (current_monitor
->flags
& MO_SREC_ACK_ROTATE
)
2104 /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
2105 if ((ch
= readchar (1)) < 0)
2107 if ((ch
= readchar (1)) < 0)
2109 if ((ch
= readchar (1)) < 0)
2111 if ((ch
= readchar (1)) < 0)
2117 /* monitor_load -- download a file. */
2120 monitor_load (char *file
, int from_tty
)
2122 monitor_debug ("MON load\n");
2124 if (current_monitor
->load_routine
)
2125 current_monitor
->load_routine (monitor_desc
, file
, hashmark
);
2127 { /* The default is ascii S-records */
2129 unsigned long load_offset
;
2132 /* enable user to specify address for downloading as 2nd arg to load */
2133 n
= sscanf (file
, "%s 0x%lx", buf
, &load_offset
);
2139 monitor_printf (current_monitor
->load
);
2140 if (current_monitor
->loadresp
)
2141 monitor_expect (current_monitor
->loadresp
, NULL
, 0);
2143 load_srec (monitor_desc
, file
, (bfd_vma
) load_offset
,
2144 32, SREC_ALL
, hashmark
,
2145 current_monitor
->flags
& MO_SREC_ACK
?
2146 monitor_wait_srec_ack
: NULL
);
2148 monitor_expect_prompt (NULL
, 0);
2151 /* Finally, make the PC point at the start address */
2153 write_pc (bfd_get_start_address (exec_bfd
));
2155 /* There used to be code here which would clear inferior_ptid and
2156 call clear_symtab_users. None of that should be necessary:
2157 monitor targets should behave like remote protocol targets, and
2158 since generic_load does none of those things, this function
2161 Furthermore, clearing inferior_ptid is *incorrect*. After doing
2162 a load, we still have a valid connection to the monitor, with a
2163 live processor state to fiddle with. The user can type
2164 `continue' or `jump *start' and make the program run. If they do
2165 these things, however, GDB will be talking to a running program
2166 while inferior_ptid is null_ptid; this makes things like
2167 reinit_frame_cache very confused. */
2173 monitor_debug ("MON stop\n");
2174 if ((current_monitor
->flags
& MO_SEND_BREAK_ON_STOP
) != 0)
2175 serial_send_break (monitor_desc
);
2176 if (current_monitor
->stop
)
2177 monitor_printf_noecho (current_monitor
->stop
);
2180 /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
2181 in OUTPUT until the prompt is seen. FIXME: We read the characters
2182 ourseleves here cause of a nasty echo. */
2185 monitor_rcmd (char *command
,
2186 struct ui_file
*outbuf
)
2192 if (monitor_desc
== NULL
)
2193 error (_("monitor target not open."));
2195 p
= current_monitor
->prompt
;
2197 /* Send the command. Note that if no args were supplied, then we're
2198 just sending the monitor a newline, which is sometimes useful. */
2200 monitor_printf ("%s\r", (command
? command
: ""));
2202 resp_len
= monitor_expect_prompt (buf
, sizeof buf
);
2204 fputs_unfiltered (buf
, outbuf
); /* Output the response */
2207 /* Convert hex digit A to a number. */
2213 if (a
>= '0' && a
<= '9')
2215 if (a
>= 'a' && a
<= 'f')
2216 return a
- 'a' + 10;
2217 if (a
>= 'A' && a
<= 'F')
2218 return a
- 'A' + 10;
2220 error (_("Reply contains invalid hex digit 0x%x"), a
);
2225 monitor_get_dev_name (void)
2230 /* Check to see if a thread is still alive. */
2233 monitor_thread_alive (ptid_t ptid
)
2235 if (ptid_equal (ptid
, monitor_ptid
))
2236 /* The monitor's task is always alive. */
2242 /* Convert a thread ID to a string. Returns the string in a static
2246 monitor_pid_to_str (ptid_t ptid
)
2248 static char buf
[64];
2250 if (ptid_equal (monitor_ptid
, ptid
))
2252 xsnprintf (buf
, sizeof buf
, "Thread <main>");
2256 return normal_pid_to_str (ptid
);
2259 static struct target_ops monitor_ops
;
2262 init_base_monitor_ops (void)
2264 monitor_ops
.to_close
= monitor_close
;
2265 monitor_ops
.to_detach
= monitor_detach
;
2266 monitor_ops
.to_resume
= monitor_resume
;
2267 monitor_ops
.to_wait
= monitor_wait
;
2268 monitor_ops
.to_fetch_registers
= monitor_fetch_registers
;
2269 monitor_ops
.to_store_registers
= monitor_store_registers
;
2270 monitor_ops
.to_prepare_to_store
= monitor_prepare_to_store
;
2271 monitor_ops
.deprecated_xfer_memory
= monitor_xfer_memory
;
2272 monitor_ops
.to_files_info
= monitor_files_info
;
2273 monitor_ops
.to_insert_breakpoint
= monitor_insert_breakpoint
;
2274 monitor_ops
.to_remove_breakpoint
= monitor_remove_breakpoint
;
2275 monitor_ops
.to_kill
= monitor_kill
;
2276 monitor_ops
.to_load
= monitor_load
;
2277 monitor_ops
.to_create_inferior
= monitor_create_inferior
;
2278 monitor_ops
.to_mourn_inferior
= monitor_mourn_inferior
;
2279 monitor_ops
.to_stop
= monitor_stop
;
2280 monitor_ops
.to_rcmd
= monitor_rcmd
;
2281 monitor_ops
.to_log_command
= serial_log_command
;
2282 monitor_ops
.to_thread_alive
= monitor_thread_alive
;
2283 monitor_ops
.to_pid_to_str
= monitor_pid_to_str
;
2284 monitor_ops
.to_stratum
= process_stratum
;
2285 monitor_ops
.to_has_all_memory
= 1;
2286 monitor_ops
.to_has_memory
= 1;
2287 monitor_ops
.to_has_stack
= 1;
2288 monitor_ops
.to_has_registers
= 1;
2289 monitor_ops
.to_has_execution
= 1;
2290 monitor_ops
.to_magic
= OPS_MAGIC
;
2291 } /* init_base_monitor_ops */
2293 /* Init the target_ops structure pointed at by OPS */
2296 init_monitor_ops (struct target_ops
*ops
)
2298 if (monitor_ops
.to_magic
!= OPS_MAGIC
)
2299 init_base_monitor_ops ();
2301 memcpy (ops
, &monitor_ops
, sizeof monitor_ops
);
2304 /* Define additional commands that are usually only used by monitors. */
2306 extern initialize_file_ftype _initialize_remote_monitors
; /* -Wmissing-prototypes */
2309 _initialize_remote_monitors (void)
2311 init_base_monitor_ops ();
2312 add_setshow_boolean_cmd ("hash", no_class
, &hashmark
, _("\
2313 Set display of activity while downloading a file."), _("\
2314 Show display of activity while downloading a file."), _("\
2315 When enabled, a hashmark \'#\' is displayed."),
2317 NULL
, /* FIXME: i18n: */
2318 &setlist
, &showlist
);
2320 add_setshow_zinteger_cmd ("monitor", no_class
, &monitor_debug_p
, _("\
2321 Set debugging of remote monitor communication."), _("\
2322 Show debugging of remote monitor communication."), _("\
2323 When enabled, communication between GDB and the remote monitor\n\
2326 NULL
, /* FIXME: i18n: */
2327 &setdebuglist
, &showdebuglist
);
2329 /* Yes, 42000 is arbitrary. The only sense out of it, is that it
2331 monitor_ptid
= ptid_build (42000, 0, 42000);