1 /* Remote debugging interface for boot monitors, for GDB.
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
6 Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
7 Resurrected from the ashes by Stu Grossman.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* This file was derived from various remote-* modules. It is a collection
25 of generic support functions so GDB can talk directly to a ROM based
26 monitor. This saves use from having to hack an exception based handler
27 into existence, and makes for quick porting.
29 This module talks to a debug monitor called 'MONITOR', which
30 We communicate with MONITOR via either a direct serial line, or a TCP
31 (or possibly TELNET) stream to a terminal multiplexor,
32 which in turn talks to the target board. */
34 /* FIXME 32x64: This code assumes that registers and addresses are at
35 most 32 bits long. If they can be larger, you will need to declare
36 values as LONGEST and use %llx or some such to print values when
37 building commands to send to the monitor. Since we don't know of
38 any actual 64-bit targets with ROM monitors that use this code,
39 it's not an issue right now. -sts 4/18/96 */
44 #include "exceptions.h"
47 #include "gdb_string.h"
48 #include <sys/types.h>
54 #include "gdb_regex.h"
57 #include "gdbthread.h"
59 static char *dev_name
;
60 static struct target_ops
*targ_ops
;
62 static void monitor_interrupt_query (void);
63 static void monitor_interrupt_twice (int);
64 static void monitor_stop (ptid_t
);
65 static void monitor_dump_regs (struct regcache
*regcache
);
68 static int from_hex (int a
);
71 static struct monitor_ops
*current_monitor
;
73 static int hashmark
; /* flag set by "set hash" */
75 static int timeout
= 30;
77 static int in_monitor_wait
= 0; /* Non-zero means we are in monitor_wait() */
79 static void (*ofunc
) (); /* Old SIGINT signal handler */
81 static CORE_ADDR
*breakaddr
;
83 /* Descriptor for I/O to remote machine. Initialize it to NULL so
84 that monitor_open knows that we don't have a file open when the
87 static struct serial
*monitor_desc
= NULL
;
89 /* Pointer to regexp pattern matching data */
91 static struct re_pattern_buffer register_pattern
;
92 static char register_fastmap
[256];
94 static struct re_pattern_buffer getmem_resp_delim_pattern
;
95 static char getmem_resp_delim_fastmap
[256];
97 static struct re_pattern_buffer setmem_resp_delim_pattern
;
98 static char setmem_resp_delim_fastmap
[256];
100 static struct re_pattern_buffer setreg_resp_delim_pattern
;
101 static char setreg_resp_delim_fastmap
[256];
103 static int dump_reg_flag
; /* Non-zero means do a dump_registers cmd when
104 monitor_wait wakes up. */
106 static int first_time
= 0; /* is this the first time we're executing after
107 gaving created the child proccess? */
110 /* This is the ptid we use while we're connected to a monitor. Its
111 value is arbitrary, as monitor targets don't have a notion of
112 processes or threads, but we need something non-null to place in
114 static ptid_t monitor_ptid
;
116 #define TARGET_BUF_SIZE 2048
118 /* Monitor specific debugging information. Typically only useful to
119 the developer of a new monitor interface. */
121 static void monitor_debug (const char *fmt
, ...) ATTR_FORMAT(printf
, 1, 2);
123 static int monitor_debug_p
= 0;
125 /* NOTE: This file alternates between monitor_debug_p and remote_debug
126 when determining if debug information is printed. Perhaps this
127 could be simplified. */
130 monitor_debug (const char *fmt
, ...)
135 va_start (args
, fmt
);
136 vfprintf_filtered (gdb_stdlog
, fmt
, args
);
142 /* Convert a string into a printable representation, Return # byte in
143 the new string. When LEN is >0 it specifies the size of the
144 string. Otherwize strlen(oldstr) is used. */
147 monitor_printable_string (char *newstr
, char *oldstr
, int len
)
153 len
= strlen (oldstr
);
155 for (i
= 0; i
< len
; i
++)
166 sprintf (newstr
, "\\x%02x", ch
& 0xff);
205 /* Print monitor errors with a string, converting the string to printable
209 monitor_error (char *function
, char *message
,
210 CORE_ADDR memaddr
, int len
, char *string
, int final_char
)
212 int real_len
= (len
== 0 && string
!= (char *) 0) ? strlen (string
) : len
;
213 char *safe_string
= alloca ((real_len
* 4) + 1);
214 monitor_printable_string (safe_string
, string
, real_len
);
217 error (_("%s (%s): %s: %s%c"),
218 function
, paddress (target_gdbarch
, memaddr
),
219 message
, safe_string
, final_char
);
221 error (_("%s (%s): %s: %s"),
222 function
, paddress (target_gdbarch
, memaddr
),
223 message
, safe_string
);
226 /* Convert hex digit A to a number. */
231 if (a
>= '0' && a
<= '9')
233 else if (a
>= 'a' && a
<= 'f')
235 else if (a
>= 'A' && a
<= 'F')
238 error (_("Invalid hex digit %d"), a
);
241 /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses
243 This function exists to get around the problem that many host platforms
244 don't have a printf that can print 64-bit addresses. The %A format
245 specification is recognized as a special case, and causes the argument
246 to be printed as a 64-bit hexadecimal address.
248 Only format specifiers of the form "[0-9]*[a-z]" are recognized.
249 If it is a '%s' format, the argument is a string; otherwise the
250 argument is assumed to be a long integer.
252 %% is also turned into a single %.
256 monitor_vsprintf (char *sndbuf
, char *pattern
, va_list args
)
258 int addr_bit
= gdbarch_addr_bit (target_gdbarch
);
267 for (p
= pattern
; *p
; p
++)
271 /* Copy the format specifier to a separate buffer. */
273 for (i
= 1; *p
>= '0' && *p
<= '9' && i
< (int) sizeof (format
) - 2;
276 format
[i
] = fmt
= *p
;
277 format
[i
+ 1] = '\0';
279 /* Fetch the next argument and print it. */
283 strcpy (sndbuf
, "%");
286 arg_addr
= va_arg (args
, CORE_ADDR
);
287 strcpy (sndbuf
, phex_nz (arg_addr
, addr_bit
/ 8));
290 arg_string
= va_arg (args
, char *);
291 sprintf (sndbuf
, format
, arg_string
);
294 arg_int
= va_arg (args
, long);
295 sprintf (sndbuf
, format
, arg_int
);
298 sndbuf
+= strlen (sndbuf
);
307 /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo.
308 Works just like printf. */
311 monitor_printf_noecho (char *pattern
,...)
317 va_start (args
, pattern
);
319 monitor_vsprintf (sndbuf
, pattern
, args
);
321 len
= strlen (sndbuf
);
322 if (len
+ 1 > sizeof sndbuf
)
323 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
327 char *safe_string
= (char *) alloca ((strlen (sndbuf
) * 4) + 1);
328 monitor_printable_string (safe_string
, sndbuf
, 0);
329 fprintf_unfiltered (gdb_stdlog
, "sent[%s]\n", safe_string
);
332 monitor_write (sndbuf
, len
);
335 /* monitor_printf -- Send data to monitor and check the echo. Works just like
339 monitor_printf (char *pattern
,...)
345 va_start (args
, pattern
);
347 monitor_vsprintf (sndbuf
, pattern
, args
);
349 len
= strlen (sndbuf
);
350 if (len
+ 1 > sizeof sndbuf
)
351 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
355 char *safe_string
= (char *) alloca ((len
* 4) + 1);
356 monitor_printable_string (safe_string
, sndbuf
, 0);
357 fprintf_unfiltered (gdb_stdlog
, "sent[%s]\n", safe_string
);
360 monitor_write (sndbuf
, len
);
362 /* We used to expect that the next immediate output was the characters we
363 just output, but sometimes some extra junk appeared before the characters
364 we expected, like an extra prompt, or a portmaster sending telnet negotiations.
365 So, just start searching for what we sent, and skip anything unknown. */
366 monitor_debug ("ExpectEcho\n");
367 monitor_expect (sndbuf
, (char *) 0, 0);
371 /* Write characters to the remote system. */
374 monitor_write (char *buf
, int buflen
)
376 if (serial_write (monitor_desc
, buf
, buflen
))
377 fprintf_unfiltered (gdb_stderr
, "serial_write failed: %s\n",
378 safe_strerror (errno
));
382 /* Read a binary character from the remote system, doing all the fancy
383 timeout stuff, but without interpreting the character in any way,
384 and without printing remote debug information. */
387 monitor_readchar (void)
395 c
= serial_readchar (monitor_desc
, timeout
);
398 c
&= 0xff; /* don't lose bit 7 */
405 if (c
== SERIAL_TIMEOUT
)
406 error (_("Timeout reading from remote system."));
408 perror_with_name (_("remote-monitor"));
412 /* Read a character from the remote system, doing all the fancy
416 readchar (int timeout
)
421 last_random
, last_nl
, last_cr
, last_crnl
429 c
= serial_readchar (monitor_desc
, timeout
);
434 /* This seems to interfere with proper function of the
436 if (monitor_debug_p
|| remote_debug
)
441 puts_debug ("read -->", buf
, "<--");
446 /* Canonicialize \n\r combinations into one \r */
447 if ((current_monitor
->flags
& MO_HANDLE_NL
) != 0)
449 if ((c
== '\r' && state
== last_nl
)
450 || (c
== '\n' && state
== last_cr
))
471 if (c
== SERIAL_TIMEOUT
)
473 /* I fail to see how detaching here can be useful */
474 if (in_monitor_wait
) /* Watchdog went off */
476 target_mourn_inferior ();
477 error (_("GDB serial timeout has expired. Target detached."));
481 error (_("Timeout reading from remote system."));
483 perror_with_name (_("remote-monitor"));
486 /* Scan input from the remote system, until STRING is found. If BUF is non-
487 zero, then collect input until we have collected either STRING or BUFLEN-1
488 chars. In either case we terminate BUF with a 0. If input overflows BUF
489 because STRING can't be found, return -1, else return number of chars in BUF
490 (minus the terminating NUL). Note that in the non-overflow case, STRING
491 will be at the end of BUF. */
494 monitor_expect (char *string
, char *buf
, int buflen
)
497 int obuflen
= buflen
;
502 char *safe_string
= (char *) alloca ((strlen (string
) * 4) + 1);
503 monitor_printable_string (safe_string
, string
, 0);
504 fprintf_unfiltered (gdb_stdlog
, "MON Expecting '%s'\n", safe_string
);
519 c
= readchar (timeout
);
526 c
= readchar (timeout
);
528 /* Don't expect any ^C sent to be echoed */
530 if (*p
== '\003' || c
== *p
)
540 return obuflen
- buflen
;
548 /* We got a character that doesn't match the string. We need to
549 back up p, but how far? If we're looking for "..howdy" and the
550 monitor sends "...howdy"? There's certainly a match in there,
551 but when we receive the third ".", we won't find it if we just
552 restart the matching at the beginning of the string.
554 This is a Boyer-Moore kind of situation. We want to reset P to
555 the end of the longest prefix of STRING that is a suffix of
556 what we've read so far. In the example above, that would be
557 ".." --- the longest prefix of "..howdy" that is a suffix of
558 "...". This longest prefix could be the empty string, if C
559 is nowhere to be found in STRING.
561 If this longest prefix is not the empty string, it must contain
562 C, so let's search from the end of STRING for instances of C,
563 and see if the portion of STRING before that is a suffix of
564 what we read before C. Actually, we can search backwards from
565 p, since we know no prefix can be longer than that.
567 Note that we can use STRING itself, along with C, as a record
568 of what we've received so far. :) */
571 for (i
= (p
- string
) - 1; i
>= 0; i
--)
574 /* Is this prefix a suffix of what we've read so far?
576 string[0 .. i-1] == string[p - i, p - 1]? */
577 if (! memcmp (string
, p
- i
, i
))
589 /* Search for a regexp. */
592 monitor_expect_regexp (struct re_pattern_buffer
*pat
, char *buf
, int buflen
)
596 monitor_debug ("MON Expecting regexp\n");
601 mybuf
= alloca (TARGET_BUF_SIZE
);
602 buflen
= TARGET_BUF_SIZE
;
610 if (p
- mybuf
>= buflen
)
611 { /* Buffer about to overflow */
613 /* On overflow, we copy the upper half of the buffer to the lower half. Not
614 great, but it usually works... */
616 memcpy (mybuf
, mybuf
+ buflen
/ 2, buflen
/ 2);
617 p
= mybuf
+ buflen
/ 2;
620 *p
++ = readchar (timeout
);
622 retval
= re_search (pat
, mybuf
, p
- mybuf
, 0, p
- mybuf
, NULL
);
628 /* Keep discarding input until we see the MONITOR prompt.
630 The convention for dealing with the prompt is that you
632 o *then* wait for the prompt.
634 Thus the last thing that a procedure does with the serial line will
635 be an monitor_expect_prompt(). Exception: monitor_resume does not
636 wait for the prompt, because the terminal is being handed over to
637 the inferior. However, the next thing which happens after that is
638 a monitor_wait which does wait for the prompt. Note that this
639 includes abnormal exit, e.g. error(). This is necessary to prevent
640 getting into states from which we can't recover. */
643 monitor_expect_prompt (char *buf
, int buflen
)
645 monitor_debug ("MON Expecting prompt\n");
646 return monitor_expect (current_monitor
->prompt
, buf
, buflen
);
649 /* Get N 32-bit words from remote, each preceded by a space, and put
650 them in registers starting at REGNO. */
661 ch
= readchar (timeout
);
662 while (isspace (ch
));
666 for (i
= 7; i
>= 1; i
--)
668 ch
= readchar (timeout
);
671 val
= (val
<< 4) | from_hex (ch
);
679 compile_pattern (char *pattern
, struct re_pattern_buffer
*compiled_pattern
,
685 compiled_pattern
->fastmap
= fastmap
;
687 tmp
= re_set_syntax (RE_SYNTAX_EMACS
);
688 val
= re_compile_pattern (pattern
,
694 error (_("compile_pattern: Can't compile pattern string `%s': %s!"), pattern
, val
);
697 re_compile_fastmap (compiled_pattern
);
700 /* Open a connection to a remote debugger. NAME is the filename used
701 for communication. */
704 monitor_open (char *args
, struct monitor_ops
*mon_ops
, int from_tty
)
709 if (mon_ops
->magic
!= MONITOR_OPS_MAGIC
)
710 error (_("Magic number of monitor_ops struct wrong."));
712 targ_ops
= mon_ops
->target
;
713 name
= targ_ops
->to_shortname
;
716 error (_("Use `target %s DEVICE-NAME' to use a serial port, or \n\
717 `target %s HOST-NAME:PORT-NUMBER' to use a network connection."), name
, name
);
719 target_preopen (from_tty
);
721 /* Setup pattern for register dump */
723 if (mon_ops
->register_pattern
)
724 compile_pattern (mon_ops
->register_pattern
, ®ister_pattern
,
727 if (mon_ops
->getmem
.resp_delim
)
728 compile_pattern (mon_ops
->getmem
.resp_delim
, &getmem_resp_delim_pattern
,
729 getmem_resp_delim_fastmap
);
731 if (mon_ops
->setmem
.resp_delim
)
732 compile_pattern (mon_ops
->setmem
.resp_delim
, &setmem_resp_delim_pattern
,
733 setmem_resp_delim_fastmap
);
735 if (mon_ops
->setreg
.resp_delim
)
736 compile_pattern (mon_ops
->setreg
.resp_delim
, &setreg_resp_delim_pattern
,
737 setreg_resp_delim_fastmap
);
739 unpush_target (targ_ops
);
743 dev_name
= xstrdup (args
);
745 monitor_desc
= serial_open (dev_name
);
748 perror_with_name (dev_name
);
752 if (serial_setbaudrate (monitor_desc
, baud_rate
))
754 serial_close (monitor_desc
);
755 perror_with_name (dev_name
);
759 serial_raw (monitor_desc
);
761 serial_flush_input (monitor_desc
);
763 /* some systems only work with 2 stop bits */
765 serial_setstopbits (monitor_desc
, mon_ops
->stopbits
);
767 current_monitor
= mon_ops
;
769 /* See if we can wake up the monitor. First, try sending a stop sequence,
770 then send the init strings. Last, remove all breakpoints. */
772 if (current_monitor
->stop
)
774 monitor_stop (inferior_ptid
);
775 if ((current_monitor
->flags
& MO_NO_ECHO_ON_OPEN
) == 0)
777 monitor_debug ("EXP Open echo\n");
778 monitor_expect_prompt (NULL
, 0);
782 /* wake up the monitor and see if it's alive */
783 for (p
= mon_ops
->init
; *p
!= NULL
; p
++)
785 /* Some of the characters we send may not be echoed,
786 but we hope to get a prompt at the end of it all. */
788 if ((current_monitor
->flags
& MO_NO_ECHO_ON_OPEN
) == 0)
791 monitor_printf_noecho (*p
);
792 monitor_expect_prompt (NULL
, 0);
795 serial_flush_input (monitor_desc
);
797 /* Alloc breakpoints */
798 if (mon_ops
->set_break
!= NULL
)
800 if (mon_ops
->num_breakpoints
== 0)
801 mon_ops
->num_breakpoints
= 8;
803 breakaddr
= (CORE_ADDR
*) xmalloc (mon_ops
->num_breakpoints
* sizeof (CORE_ADDR
));
804 memset (breakaddr
, 0, mon_ops
->num_breakpoints
* sizeof (CORE_ADDR
));
807 /* Remove all breakpoints */
809 if (mon_ops
->clr_all_break
)
811 monitor_printf (mon_ops
->clr_all_break
);
812 monitor_expect_prompt (NULL
, 0);
816 printf_unfiltered (_("Remote target %s connected to %s\n"), name
, dev_name
);
818 push_target (targ_ops
);
823 /* Make run command think we are busy... */
824 inferior_ptid
= monitor_ptid
;
825 add_inferior_silent (ptid_get_pid (inferior_ptid
));
826 add_thread_silent (inferior_ptid
);
828 /* Give monitor_wait something to read */
830 monitor_printf (current_monitor
->line_term
);
832 start_remote (from_tty
);
835 /* Close out all files and local state before this target loses
839 monitor_close (int quitting
)
842 serial_close (monitor_desc
);
844 /* Free breakpoint memory */
845 if (breakaddr
!= NULL
)
853 delete_thread_silent (monitor_ptid
);
854 delete_inferior_silent (ptid_get_pid (monitor_ptid
));
857 /* Terminate the open connection to the remote debugger. Use this
858 when you want to detach and do something else with your gdb. */
861 monitor_detach (struct target_ops
*ops
, char *args
, int from_tty
)
863 pop_target (); /* calls monitor_close to do the real work */
865 printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname
);
868 /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
871 monitor_supply_register (struct regcache
*regcache
, int regno
, char *valstr
)
873 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
874 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
876 unsigned char regbuf
[MAX_REGISTER_SIZE
];
881 while (p
&& *p
!= '\0')
883 if (*p
== '\r' || *p
== '\n')
894 if (!isxdigit (*p
) && *p
!= 'x')
900 val
+= fromhex (*p
++);
902 monitor_debug ("Supplying Register %d %s\n", regno
, valstr
);
904 if (val
== 0 && valstr
== p
)
905 error (_("monitor_supply_register (%d): bad value from monitor: %s."),
908 /* supply register stores in target byte order, so swap here */
910 store_unsigned_integer (regbuf
, register_size (gdbarch
, regno
), byte_order
,
913 regcache_raw_supply (regcache
, regno
, regbuf
);
918 /* Tell the remote machine to resume. */
921 monitor_resume (struct target_ops
*ops
,
922 ptid_t ptid
, int step
, enum target_signal sig
)
924 /* Some monitors require a different command when starting a program */
925 monitor_debug ("MON resume\n");
926 if (current_monitor
->flags
& MO_RUN_FIRST_TIME
&& first_time
== 1)
929 monitor_printf ("run\r");
930 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
935 monitor_printf (current_monitor
->step
);
938 if (current_monitor
->continue_hook
)
939 (*current_monitor
->continue_hook
) ();
941 monitor_printf (current_monitor
->cont
);
942 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
947 /* Parse the output of a register dump command. A monitor specific
948 regexp is used to extract individual register descriptions of the
949 form REG=VAL. Each description is split up into a name and a value
950 string which are passed down to monitor specific code. */
953 parse_register_dump (struct regcache
*regcache
, char *buf
, int len
)
955 monitor_debug ("MON Parsing register dump\n");
958 int regnamelen
, vallen
;
960 /* Element 0 points to start of register name, and element 1
961 points to the start of the register value. */
962 struct re_registers register_strings
;
964 memset (®ister_strings
, 0, sizeof (struct re_registers
));
966 if (re_search (®ister_pattern
, buf
, len
, 0, len
,
967 ®ister_strings
) == -1)
970 regnamelen
= register_strings
.end
[1] - register_strings
.start
[1];
971 regname
= buf
+ register_strings
.start
[1];
972 vallen
= register_strings
.end
[2] - register_strings
.start
[2];
973 val
= buf
+ register_strings
.start
[2];
975 current_monitor
->supply_register (regcache
, regname
, regnamelen
,
978 buf
+= register_strings
.end
[0];
979 len
-= register_strings
.end
[0];
983 /* Send ^C to target to halt it. Target will respond, and send us a
987 monitor_interrupt (int signo
)
989 /* If this doesn't work, try more severe steps. */
990 signal (signo
, monitor_interrupt_twice
);
992 if (monitor_debug_p
|| remote_debug
)
993 fprintf_unfiltered (gdb_stdlog
, "monitor_interrupt called\n");
995 target_stop (inferior_ptid
);
998 /* The user typed ^C twice. */
1001 monitor_interrupt_twice (int signo
)
1003 signal (signo
, ofunc
);
1005 monitor_interrupt_query ();
1007 signal (signo
, monitor_interrupt
);
1010 /* Ask the user what to do when an interrupt is received. */
1013 monitor_interrupt_query (void)
1015 target_terminal_ours ();
1017 if (query (_("Interrupted while waiting for the program.\n\
1018 Give up (and stop debugging it)? ")))
1020 target_mourn_inferior ();
1021 deprecated_throw_reason (RETURN_QUIT
);
1024 target_terminal_inferior ();
1028 monitor_wait_cleanup (void *old_timeout
)
1030 timeout
= *(int *) old_timeout
;
1031 signal (SIGINT
, ofunc
);
1032 in_monitor_wait
= 0;
1038 monitor_wait_filter (char *buf
,
1041 struct target_waitstatus
*status
)
1046 resp_len
= monitor_expect_prompt (buf
, bufmax
);
1047 *ext_resp_len
= resp_len
;
1050 fprintf_unfiltered (gdb_stderr
, "monitor_wait: excessive response from monitor: %s.", buf
);
1052 while (resp_len
< 0);
1054 /* Print any output characters that were preceded by ^O. */
1055 /* FIXME - This would be great as a user settabgle flag */
1056 if (monitor_debug_p
|| remote_debug
1057 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1061 for (i
= 0; i
< resp_len
- 1; i
++)
1063 putchar_unfiltered (buf
[++i
]);
1069 /* Wait until the remote machine stops, then return, storing status in
1070 status just as `wait' would. */
1073 monitor_wait (struct target_ops
*ops
,
1074 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
1076 int old_timeout
= timeout
;
1077 char buf
[TARGET_BUF_SIZE
];
1079 struct cleanup
*old_chain
;
1081 status
->kind
= TARGET_WAITKIND_EXITED
;
1082 status
->value
.integer
= 0;
1084 old_chain
= make_cleanup (monitor_wait_cleanup
, &old_timeout
);
1085 monitor_debug ("MON wait\n");
1088 /* This is somthing other than a maintenance command */
1089 in_monitor_wait
= 1;
1090 timeout
= watchdog
> 0 ? watchdog
: -1;
1092 timeout
= -1; /* Don't time out -- user program is running. */
1095 ofunc
= (void (*)()) signal (SIGINT
, monitor_interrupt
);
1097 if (current_monitor
->wait_filter
)
1098 (*current_monitor
->wait_filter
) (buf
, sizeof (buf
), &resp_len
, status
);
1100 monitor_wait_filter (buf
, sizeof (buf
), &resp_len
, status
);
1102 #if 0 /* Transferred to monitor wait filter */
1105 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1108 fprintf_unfiltered (gdb_stderr
, "monitor_wait: excessive response from monitor: %s.", buf
);
1110 while (resp_len
< 0);
1112 /* Print any output characters that were preceded by ^O. */
1113 /* FIXME - This would be great as a user settabgle flag */
1114 if (monitor_debug_p
|| remote_debug
1115 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1119 for (i
= 0; i
< resp_len
- 1; i
++)
1121 putchar_unfiltered (buf
[++i
]);
1125 signal (SIGINT
, ofunc
);
1127 timeout
= old_timeout
;
1129 if (dump_reg_flag
&& current_monitor
->dump_registers
)
1132 monitor_printf (current_monitor
->dump_registers
);
1133 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1136 if (current_monitor
->register_pattern
)
1137 parse_register_dump (get_current_regcache (), buf
, resp_len
);
1139 monitor_debug ("Wait fetching registers after stop\n");
1140 monitor_dump_regs (get_current_regcache ());
1143 status
->kind
= TARGET_WAITKIND_STOPPED
;
1144 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1146 discard_cleanups (old_chain
);
1148 in_monitor_wait
= 0;
1150 return inferior_ptid
;
1153 /* Fetch register REGNO, or all registers if REGNO is -1. Returns
1157 monitor_fetch_register (struct regcache
*regcache
, int regno
)
1164 regbuf
= alloca (MAX_REGISTER_SIZE
* 2 + 1);
1165 zerobuf
= alloca (MAX_REGISTER_SIZE
);
1166 memset (zerobuf
, 0, MAX_REGISTER_SIZE
);
1168 if (current_monitor
->regname
!= NULL
)
1169 name
= current_monitor
->regname (regno
);
1171 name
= current_monitor
->regnames
[regno
];
1172 monitor_debug ("MON fetchreg %d '%s'\n", regno
, name
? name
: "(null name)");
1174 if (!name
|| (*name
== '\0'))
1176 monitor_debug ("No register known for %d\n", regno
);
1177 regcache_raw_supply (regcache
, regno
, zerobuf
);
1181 /* send the register examine command */
1183 monitor_printf (current_monitor
->getreg
.cmd
, name
);
1185 /* If RESP_DELIM is specified, we search for that as a leading
1186 delimiter for the register value. Otherwise, we just start
1187 searching from the start of the buf. */
1189 if (current_monitor
->getreg
.resp_delim
)
1191 monitor_debug ("EXP getreg.resp_delim\n");
1192 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1193 /* Handle case of first 32 registers listed in pairs. */
1194 if (current_monitor
->flags
& MO_32_REGS_PAIRED
1195 && (regno
& 1) != 0 && regno
< 32)
1197 monitor_debug ("EXP getreg.resp_delim\n");
1198 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1202 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */
1203 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1206 c
= readchar (timeout
);
1208 c
= readchar (timeout
);
1209 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1212 error (_("Bad value returned from monitor while fetching register %x."),
1216 /* Read upto the maximum number of hex digits for this register, skipping
1217 spaces, but stop reading if something else is seen. Some monitors
1218 like to drop leading zeros. */
1220 for (i
= 0; i
< register_size (get_regcache_arch (regcache
), regno
) * 2; i
++)
1223 c
= readchar (timeout
);
1225 c
= readchar (timeout
);
1233 regbuf
[i
] = '\000'; /* terminate the number */
1234 monitor_debug ("REGVAL '%s'\n", regbuf
);
1236 /* If TERM is present, we wait for that to show up. Also, (if TERM
1237 is present), we will send TERM_CMD if that is present. In any
1238 case, we collect all of the output into buf, and then wait for
1239 the normal prompt. */
1241 if (current_monitor
->getreg
.term
)
1243 monitor_debug ("EXP getreg.term\n");
1244 monitor_expect (current_monitor
->getreg
.term
, NULL
, 0); /* get response */
1247 if (current_monitor
->getreg
.term_cmd
)
1249 monitor_debug ("EMIT getreg.term.cmd\n");
1250 monitor_printf (current_monitor
->getreg
.term_cmd
);
1252 if (!current_monitor
->getreg
.term
|| /* Already expected or */
1253 current_monitor
->getreg
.term_cmd
) /* ack expected */
1254 monitor_expect_prompt (NULL
, 0); /* get response */
1256 monitor_supply_register (regcache
, regno
, regbuf
);
1259 /* Sometimes, it takes several commands to dump the registers */
1260 /* This is a primitive for use by variations of monitor interfaces in
1261 case they need to compose the operation.
1264 monitor_dump_reg_block (struct regcache
*regcache
, char *block_cmd
)
1266 char buf
[TARGET_BUF_SIZE
];
1268 monitor_printf (block_cmd
);
1269 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1270 parse_register_dump (regcache
, buf
, resp_len
);
1275 /* Read the remote registers into the block regs. */
1276 /* Call the specific function if it has been provided */
1279 monitor_dump_regs (struct regcache
*regcache
)
1281 char buf
[TARGET_BUF_SIZE
];
1283 if (current_monitor
->dumpregs
)
1284 (*(current_monitor
->dumpregs
)) (regcache
); /* call supplied function */
1285 else if (current_monitor
->dump_registers
) /* default version */
1287 monitor_printf (current_monitor
->dump_registers
);
1288 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1289 parse_register_dump (regcache
, buf
, resp_len
);
1292 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check")); /* Need some way to read registers */
1296 monitor_fetch_registers (struct target_ops
*ops
,
1297 struct regcache
*regcache
, int regno
)
1299 monitor_debug ("MON fetchregs\n");
1300 if (current_monitor
->getreg
.cmd
)
1304 monitor_fetch_register (regcache
, regno
);
1308 for (regno
= 0; regno
< gdbarch_num_regs (get_regcache_arch (regcache
));
1310 monitor_fetch_register (regcache
, regno
);
1314 monitor_dump_regs (regcache
);
1318 /* Store register REGNO, or all if REGNO == 0. Return errno value. */
1321 monitor_store_register (struct regcache
*regcache
, int regno
)
1323 int reg_size
= register_size (get_regcache_arch (regcache
), regno
);
1327 if (current_monitor
->regname
!= NULL
)
1328 name
= current_monitor
->regname (regno
);
1330 name
= current_monitor
->regnames
[regno
];
1332 if (!name
|| (*name
== '\0'))
1334 monitor_debug ("MON Cannot store unknown register\n");
1338 regcache_cooked_read_unsigned (regcache
, regno
, &val
);
1339 monitor_debug ("MON storeg %d %s\n", regno
, phex (val
, reg_size
));
1341 /* send the register deposit command */
1343 if (current_monitor
->flags
& MO_REGISTER_VALUE_FIRST
)
1344 monitor_printf (current_monitor
->setreg
.cmd
, val
, name
);
1345 else if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1346 monitor_printf (current_monitor
->setreg
.cmd
, name
);
1348 monitor_printf (current_monitor
->setreg
.cmd
, name
, val
);
1350 if (current_monitor
->setreg
.resp_delim
)
1352 monitor_debug ("EXP setreg.resp_delim\n");
1353 monitor_expect_regexp (&setreg_resp_delim_pattern
, NULL
, 0);
1354 if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1355 monitor_printf ("%s\r", phex_nz (val
, reg_size
));
1357 if (current_monitor
->setreg
.term
)
1359 monitor_debug ("EXP setreg.term\n");
1360 monitor_expect (current_monitor
->setreg
.term
, NULL
, 0);
1361 if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1362 monitor_printf ("%s\r", phex_nz (val
, reg_size
));
1363 monitor_expect_prompt (NULL
, 0);
1366 monitor_expect_prompt (NULL
, 0);
1367 if (current_monitor
->setreg
.term_cmd
) /* Mode exit required */
1369 monitor_debug ("EXP setreg_termcmd\n");
1370 monitor_printf ("%s", current_monitor
->setreg
.term_cmd
);
1371 monitor_expect_prompt (NULL
, 0);
1373 } /* monitor_store_register */
1375 /* Store the remote registers. */
1378 monitor_store_registers (struct target_ops
*ops
,
1379 struct regcache
*regcache
, int regno
)
1383 monitor_store_register (regcache
, regno
);
1387 for (regno
= 0; regno
< gdbarch_num_regs (get_regcache_arch (regcache
));
1389 monitor_store_register (regcache
, regno
);
1392 /* Get ready to modify the registers array. On machines which store
1393 individual registers, this doesn't need to do anything. On machines
1394 which store all the registers in one fell swoop, this makes sure
1395 that registers contains all the registers from the program being
1399 monitor_prepare_to_store (struct regcache
*regcache
)
1401 /* Do nothing, since we can store individual regs */
1405 monitor_files_info (struct target_ops
*ops
)
1407 printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name
, baud_rate
);
1411 monitor_write_memory (CORE_ADDR memaddr
, char *myaddr
, int len
)
1413 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch
);
1414 unsigned int val
, hostval
;
1418 monitor_debug ("MON write %d %s\n", len
, paddress (target_gdbarch
, memaddr
));
1420 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1421 memaddr
= gdbarch_addr_bits_remove (target_gdbarch
, 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
, byte_order
);
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
.resp_delim
)
1488 monitor_debug ("EXP setmem.resp_delim");
1489 monitor_expect_regexp (&setmem_resp_delim_pattern
, NULL
, 0);
1490 monitor_printf ("%x\r", val
);
1492 if (current_monitor
->setmem
.term
)
1494 monitor_debug ("EXP setmem.term");
1495 monitor_expect (current_monitor
->setmem
.term
, NULL
, 0);
1496 monitor_printf ("%x\r", val
);
1498 if (current_monitor
->setmem
.term_cmd
)
1499 { /* Emit this to get out of the memory editing state */
1500 monitor_printf ("%s", current_monitor
->setmem
.term_cmd
);
1501 /* Drop through to expecting a prompt */
1505 monitor_printf (cmd
, memaddr
, val
);
1507 monitor_expect_prompt (NULL
, 0);
1514 monitor_write_memory_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
1520 /* Enter the sub mode */
1521 monitor_printf (current_monitor
->setmem
.cmdb
, memaddr
);
1522 monitor_expect_prompt (NULL
, 0);
1526 monitor_printf ("%x\r", val
);
1530 /* If we wanted to, here we could validate the address */
1531 monitor_expect_prompt (NULL
, 0);
1534 /* Now exit the sub mode */
1535 monitor_printf (current_monitor
->getreg
.term_cmd
);
1536 monitor_expect_prompt (NULL
, 0);
1542 longlongendswap (unsigned char *a
)
1551 *(a
+ i
) = *(a
+ j
);
1556 /* Format 32 chars of long long value, advance the pointer */
1557 static char *hexlate
= "0123456789abcdef";
1559 longlong_hexchars (unsigned long long value
,
1569 static unsigned char disbuf
[8]; /* disassembly buffer */
1570 unsigned char *scan
, *limit
; /* loop controls */
1571 unsigned char c
, nib
;
1576 unsigned long long *dp
;
1577 dp
= (unsigned long long *) scan
;
1580 longlongendswap (disbuf
); /* FIXME: ONly on big endian hosts */
1581 while (scan
< limit
)
1583 c
= *scan
++; /* a byte of our long long value */
1589 leadzero
= 0; /* henceforth we print even zeroes */
1591 nib
= c
>> 4; /* high nibble bits */
1592 *outbuff
++ = hexlate
[nib
];
1593 nib
= c
& 0x0f; /* low nibble bits */
1594 *outbuff
++ = hexlate
[nib
];
1598 } /* longlong_hexchars */
1602 /* I am only going to call this when writing virtual byte streams.
1603 Which possably entails endian conversions
1606 monitor_write_memory_longlongs (CORE_ADDR memaddr
, char *myaddr
, int len
)
1608 static char hexstage
[20]; /* At least 16 digits required, plus null */
1613 llptr
= (unsigned long long *) myaddr
;
1616 monitor_printf (current_monitor
->setmem
.cmdll
, memaddr
);
1617 monitor_expect_prompt (NULL
, 0);
1621 endstring
= longlong_hexchars (*llptr
, hexstage
);
1622 *endstring
= '\0'; /* NUll terminate for printf */
1623 monitor_printf ("%s\r", hexstage
);
1627 /* If we wanted to, here we could validate the address */
1628 monitor_expect_prompt (NULL
, 0);
1631 /* Now exit the sub mode */
1632 monitor_printf (current_monitor
->getreg
.term_cmd
);
1633 monitor_expect_prompt (NULL
, 0);
1639 /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
1640 /* This is for the large blocks of memory which may occur in downloading.
1641 And for monitors which use interactive entry,
1642 And for monitors which do not have other downloading methods.
1643 Without this, we will end up calling monitor_write_memory many times
1644 and do the entry and exit of the sub mode many times
1645 This currently assumes...
1646 MO_SETMEM_INTERACTIVE
1647 ! MO_NO_ECHO_ON_SETMEM
1648 To use this, the you have to patch the monitor_cmds block with
1649 this function. Otherwise, its not tuned up for use by all
1654 monitor_write_memory_block (CORE_ADDR memaddr
, char *myaddr
, int len
)
1658 /* FIXME: This would be a good place to put the zero test */
1660 if ((len
> 8) && (((len
& 0x07)) == 0) && current_monitor
->setmem
.cmdll
)
1662 return monitor_write_memory_longlongs (memaddr
, myaddr
, len
);
1665 written
= monitor_write_memory_bytes (memaddr
, myaddr
, len
);
1669 /* This is an alternate form of monitor_read_memory which is used for monitors
1670 which can only read a single byte/word/etc. at a time. */
1673 monitor_read_memory_single (CORE_ADDR memaddr
, char *myaddr
, int len
)
1675 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch
);
1677 char membuf
[sizeof (int) * 2 + 1];
1681 monitor_debug ("MON read single\n");
1683 /* Can't actually use long longs (nice idea, though). In fact, the
1684 call to strtoul below will fail if it tries to convert a value
1685 that's too big to fit in a long. */
1686 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->getmem
.cmdll
)
1689 cmd
= current_monitor
->getmem
.cmdll
;
1693 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->getmem
.cmdl
)
1696 cmd
= current_monitor
->getmem
.cmdl
;
1698 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->getmem
.cmdw
)
1701 cmd
= current_monitor
->getmem
.cmdw
;
1706 cmd
= current_monitor
->getmem
.cmdb
;
1709 /* Send the examine command. */
1711 monitor_printf (cmd
, memaddr
);
1713 /* If RESP_DELIM is specified, we search for that as a leading
1714 delimiter for the memory value. Otherwise, we just start
1715 searching from the start of the buf. */
1717 if (current_monitor
->getmem
.resp_delim
)
1719 monitor_debug ("EXP getmem.resp_delim\n");
1720 monitor_expect_regexp (&getmem_resp_delim_pattern
, NULL
, 0);
1723 /* Now, read the appropriate number of hex digits for this loc,
1726 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1727 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1731 c
= readchar (timeout
);
1733 c
= readchar (timeout
);
1734 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1737 monitor_error ("monitor_read_memory_single",
1738 "bad response from monitor",
1739 memaddr
, 0, NULL
, 0);
1744 for (i
= 0; i
< len
* 2; i
++)
1750 c
= readchar (timeout
);
1756 monitor_error ("monitor_read_memory_single",
1757 "bad response from monitor",
1758 memaddr
, i
, membuf
, 0);
1762 membuf
[i
] = '\000'; /* terminate the number */
1765 /* If TERM is present, we wait for that to show up. Also, (if TERM is
1766 present), we will send TERM_CMD if that is present. In any case, we collect
1767 all of the output into buf, and then wait for the normal prompt. */
1769 if (current_monitor
->getmem
.term
)
1771 monitor_expect (current_monitor
->getmem
.term
, NULL
, 0); /* get response */
1773 if (current_monitor
->getmem
.term_cmd
)
1775 monitor_printf (current_monitor
->getmem
.term_cmd
);
1776 monitor_expect_prompt (NULL
, 0);
1780 monitor_expect_prompt (NULL
, 0); /* get response */
1783 val
= strtoul (membuf
, &p
, 16);
1785 if (val
== 0 && membuf
== p
)
1786 monitor_error ("monitor_read_memory_single",
1787 "bad value from monitor",
1788 memaddr
, 0, membuf
, 0);
1790 /* supply register stores in target byte order, so swap here */
1792 store_unsigned_integer (myaddr
, len
, byte_order
, val
);
1797 /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
1798 memory at MEMADDR. Returns length moved. Currently, we do no more
1799 than 16 bytes at a time. */
1802 monitor_read_memory (CORE_ADDR memaddr
, char *myaddr
, int len
)
1813 monitor_debug ("Zero length call to monitor_read_memory\n");
1817 monitor_debug ("MON read block ta(%s) ha(%lx) %d\n",
1818 paddress (target_gdbarch
, memaddr
), (long) myaddr
, len
);
1820 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1821 memaddr
= gdbarch_addr_bits_remove (target_gdbarch
, memaddr
);
1823 if (current_monitor
->flags
& MO_GETMEM_READ_SINGLE
)
1824 return monitor_read_memory_single (memaddr
, myaddr
, len
);
1826 len
= min (len
, 16);
1828 /* Some dumpers align the first data with the preceeding 16
1829 byte boundary. Some print blanks and start at the
1830 requested boundary. EXACT_DUMPADDR
1833 dumpaddr
= (current_monitor
->flags
& MO_EXACT_DUMPADDR
)
1834 ? memaddr
: memaddr
& ~0x0f;
1836 /* See if xfer would cross a 16 byte boundary. If so, clip it. */
1837 if (((memaddr
^ (memaddr
+ len
- 1)) & ~0xf) != 0)
1838 len
= ((memaddr
+ len
) & ~0xf) - memaddr
;
1840 /* send the memory examine command */
1842 if (current_monitor
->flags
& MO_GETMEM_NEEDS_RANGE
)
1843 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, memaddr
+ len
);
1844 else if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1845 monitor_printf (current_monitor
->getmem
.cmdb
, dumpaddr
);
1847 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, len
);
1849 /* If TERM is present, we wait for that to show up. Also, (if TERM
1850 is present), we will send TERM_CMD if that is present. In any
1851 case, we collect all of the output into buf, and then wait for
1852 the normal prompt. */
1854 if (current_monitor
->getmem
.term
)
1856 resp_len
= monitor_expect (current_monitor
->getmem
.term
, buf
, sizeof buf
); /* get response */
1859 monitor_error ("monitor_read_memory",
1860 "excessive response from monitor",
1861 memaddr
, resp_len
, buf
, 0);
1863 if (current_monitor
->getmem
.term_cmd
)
1865 serial_write (monitor_desc
, current_monitor
->getmem
.term_cmd
,
1866 strlen (current_monitor
->getmem
.term_cmd
));
1867 monitor_expect_prompt (NULL
, 0);
1871 resp_len
= monitor_expect_prompt (buf
, sizeof buf
); /* get response */
1875 /* If RESP_DELIM is specified, we search for that as a leading
1876 delimiter for the values. Otherwise, we just start searching
1877 from the start of the buf. */
1879 if (current_monitor
->getmem
.resp_delim
)
1882 struct re_registers resp_strings
;
1883 monitor_debug ("MON getmem.resp_delim %s\n", current_monitor
->getmem
.resp_delim
);
1885 memset (&resp_strings
, 0, sizeof (struct re_registers
));
1887 retval
= re_search (&getmem_resp_delim_pattern
, p
, tmp
, 0, tmp
,
1891 monitor_error ("monitor_read_memory",
1892 "bad response from monitor",
1893 memaddr
, resp_len
, buf
, 0);
1895 p
+= resp_strings
.end
[0];
1897 p
= strstr (p
, current_monitor
->getmem
.resp_delim
);
1899 monitor_error ("monitor_read_memory",
1900 "bad response from monitor",
1901 memaddr
, resp_len
, buf
, 0);
1902 p
+= strlen (current_monitor
->getmem
.resp_delim
);
1905 monitor_debug ("MON scanning %d ,%lx '%s'\n", len
, (long) p
, p
);
1906 if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1914 while (!(c
== '\000' || c
== '\n' || c
== '\r') && i
> 0)
1918 if ((dumpaddr
>= memaddr
) && (i
> 0))
1920 val
= fromhex (c
) * 16 + fromhex (*(p
+ 1));
1922 if (monitor_debug_p
|| remote_debug
)
1923 fprintf_unfiltered (gdb_stdlog
, "[%02x]", val
);
1930 ++p
; /* skip a blank or other non hex char */
1934 error (_("Failed to read via monitor"));
1935 if (monitor_debug_p
|| remote_debug
)
1936 fprintf_unfiltered (gdb_stdlog
, "\n");
1937 return fetched
; /* Return the number of bytes actually read */
1939 monitor_debug ("MON scanning bytes\n");
1941 for (i
= len
; i
> 0; i
--)
1943 /* Skip non-hex chars, but bomb on end of string and newlines */
1950 if (*p
== '\000' || *p
== '\n' || *p
== '\r')
1951 monitor_error ("monitor_read_memory",
1952 "badly terminated response from monitor",
1953 memaddr
, resp_len
, buf
, 0);
1957 val
= strtoul (p
, &p1
, 16);
1959 if (val
== 0 && p
== p1
)
1960 monitor_error ("monitor_read_memory",
1961 "bad value from monitor",
1962 memaddr
, resp_len
, buf
, 0);
1975 /* Transfer LEN bytes between target address MEMADDR and GDB address
1976 MYADDR. Returns 0 for success, errno code for failure. TARGET is
1980 monitor_xfer_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
, int write
,
1981 struct mem_attrib
*attrib
, struct target_ops
*target
)
1987 if (current_monitor
->flags
& MO_HAS_BLOCKWRITES
)
1988 res
= monitor_write_memory_block(memaddr
, myaddr
, len
);
1990 res
= monitor_write_memory(memaddr
, myaddr
, len
);
1994 res
= monitor_read_memory(memaddr
, myaddr
, len
);
2001 monitor_kill (struct target_ops
*ops
)
2003 return; /* ignore attempts to kill target system */
2006 /* All we actually do is set the PC to the start address of exec_bfd. */
2009 monitor_create_inferior (struct target_ops
*ops
, char *exec_file
,
2010 char *args
, char **env
, int from_tty
)
2012 if (args
&& (*args
!= '\000'))
2013 error (_("Args are not supported by the monitor."));
2016 clear_proceed_status ();
2017 regcache_write_pc (get_current_regcache (),
2018 bfd_get_start_address (exec_bfd
));
2021 /* Clean up when a program exits.
2022 The program actually lives on in the remote processor's RAM, and may be
2023 run again without a download. Don't leave it full of breakpoint
2027 monitor_mourn_inferior (struct target_ops
*ops
)
2029 unpush_target (targ_ops
);
2030 generic_mourn_inferior (); /* Do all the proper things now */
2031 delete_thread_silent (monitor_ptid
);
2034 /* Tell the monitor to add a breakpoint. */
2037 monitor_insert_breakpoint (struct gdbarch
*gdbarch
,
2038 struct bp_target_info
*bp_tgt
)
2040 CORE_ADDR addr
= bp_tgt
->placed_address
;
2044 monitor_debug ("MON inst bkpt %s\n", paddress (gdbarch
, addr
));
2045 if (current_monitor
->set_break
== NULL
)
2046 error (_("No set_break defined for this monitor"));
2048 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
2049 addr
= gdbarch_addr_bits_remove (gdbarch
, addr
);
2051 /* Determine appropriate breakpoint size for this address. */
2052 gdbarch_breakpoint_from_pc (gdbarch
, &addr
, &bplen
);
2053 bp_tgt
->placed_address
= addr
;
2054 bp_tgt
->placed_size
= bplen
;
2056 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2058 if (breakaddr
[i
] == 0)
2060 breakaddr
[i
] = addr
;
2061 monitor_printf (current_monitor
->set_break
, addr
);
2062 monitor_expect_prompt (NULL
, 0);
2067 error (_("Too many breakpoints (> %d) for monitor."), current_monitor
->num_breakpoints
);
2070 /* Tell the monitor to remove a breakpoint. */
2073 monitor_remove_breakpoint (struct gdbarch
*gdbarch
,
2074 struct bp_target_info
*bp_tgt
)
2076 CORE_ADDR addr
= bp_tgt
->placed_address
;
2079 monitor_debug ("MON rmbkpt %s\n", paddress (gdbarch
, addr
));
2080 if (current_monitor
->clr_break
== NULL
)
2081 error (_("No clr_break defined for this monitor"));
2083 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2085 if (breakaddr
[i
] == addr
)
2088 /* some monitors remove breakpoints based on the address */
2089 if (current_monitor
->flags
& MO_CLR_BREAK_USES_ADDR
)
2090 monitor_printf (current_monitor
->clr_break
, addr
);
2091 else if (current_monitor
->flags
& MO_CLR_BREAK_1_BASED
)
2092 monitor_printf (current_monitor
->clr_break
, i
+ 1);
2094 monitor_printf (current_monitor
->clr_break
, i
);
2095 monitor_expect_prompt (NULL
, 0);
2099 fprintf_unfiltered (gdb_stderr
,
2100 "Can't find breakpoint associated with %s\n",
2101 paddress (gdbarch
, addr
));
2105 /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
2106 an S-record. Return non-zero if the ACK is received properly. */
2109 monitor_wait_srec_ack (void)
2113 if (current_monitor
->flags
& MO_SREC_ACK_PLUS
)
2115 return (readchar (timeout
) == '+');
2117 else if (current_monitor
->flags
& MO_SREC_ACK_ROTATE
)
2119 /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
2120 if ((ch
= readchar (1)) < 0)
2122 if ((ch
= readchar (1)) < 0)
2124 if ((ch
= readchar (1)) < 0)
2126 if ((ch
= readchar (1)) < 0)
2132 /* monitor_load -- download a file. */
2135 monitor_load (char *file
, int from_tty
)
2137 monitor_debug ("MON load\n");
2139 if (current_monitor
->load_routine
)
2140 current_monitor
->load_routine (monitor_desc
, file
, hashmark
);
2142 { /* The default is ascii S-records */
2144 unsigned long load_offset
;
2147 /* enable user to specify address for downloading as 2nd arg to load */
2148 n
= sscanf (file
, "%s 0x%lx", buf
, &load_offset
);
2154 monitor_printf (current_monitor
->load
);
2155 if (current_monitor
->loadresp
)
2156 monitor_expect (current_monitor
->loadresp
, NULL
, 0);
2158 load_srec (monitor_desc
, file
, (bfd_vma
) load_offset
,
2159 32, SREC_ALL
, hashmark
,
2160 current_monitor
->flags
& MO_SREC_ACK
?
2161 monitor_wait_srec_ack
: NULL
);
2163 monitor_expect_prompt (NULL
, 0);
2166 /* Finally, make the PC point at the start address */
2168 regcache_write_pc (get_current_regcache (),
2169 bfd_get_start_address (exec_bfd
));
2171 /* There used to be code here which would clear inferior_ptid and
2172 call clear_symtab_users. None of that should be necessary:
2173 monitor targets should behave like remote protocol targets, and
2174 since generic_load does none of those things, this function
2177 Furthermore, clearing inferior_ptid is *incorrect*. After doing
2178 a load, we still have a valid connection to the monitor, with a
2179 live processor state to fiddle with. The user can type
2180 `continue' or `jump *start' and make the program run. If they do
2181 these things, however, GDB will be talking to a running program
2182 while inferior_ptid is null_ptid; this makes things like
2183 reinit_frame_cache very confused. */
2187 monitor_stop (ptid_t ptid
)
2189 monitor_debug ("MON stop\n");
2190 if ((current_monitor
->flags
& MO_SEND_BREAK_ON_STOP
) != 0)
2191 serial_send_break (monitor_desc
);
2192 if (current_monitor
->stop
)
2193 monitor_printf_noecho (current_monitor
->stop
);
2196 /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
2197 in OUTPUT until the prompt is seen. FIXME: We read the characters
2198 ourseleves here cause of a nasty echo. */
2201 monitor_rcmd (char *command
,
2202 struct ui_file
*outbuf
)
2208 if (monitor_desc
== NULL
)
2209 error (_("monitor target not open."));
2211 p
= current_monitor
->prompt
;
2213 /* Send the command. Note that if no args were supplied, then we're
2214 just sending the monitor a newline, which is sometimes useful. */
2216 monitor_printf ("%s\r", (command
? command
: ""));
2218 resp_len
= monitor_expect_prompt (buf
, sizeof buf
);
2220 fputs_unfiltered (buf
, outbuf
); /* Output the response */
2223 /* Convert hex digit A to a number. */
2229 if (a
>= '0' && a
<= '9')
2231 if (a
>= 'a' && a
<= 'f')
2232 return a
- 'a' + 10;
2233 if (a
>= 'A' && a
<= 'F')
2234 return a
- 'A' + 10;
2236 error (_("Reply contains invalid hex digit 0x%x"), a
);
2241 monitor_get_dev_name (void)
2246 /* Check to see if a thread is still alive. */
2249 monitor_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
2251 if (ptid_equal (ptid
, monitor_ptid
))
2252 /* The monitor's task is always alive. */
2258 /* Convert a thread ID to a string. Returns the string in a static
2262 monitor_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
2264 static char buf
[64];
2266 if (ptid_equal (monitor_ptid
, ptid
))
2268 xsnprintf (buf
, sizeof buf
, "Thread <main>");
2272 return normal_pid_to_str (ptid
);
2275 static struct target_ops monitor_ops
;
2278 init_base_monitor_ops (void)
2280 monitor_ops
.to_close
= monitor_close
;
2281 monitor_ops
.to_detach
= monitor_detach
;
2282 monitor_ops
.to_resume
= monitor_resume
;
2283 monitor_ops
.to_wait
= monitor_wait
;
2284 monitor_ops
.to_fetch_registers
= monitor_fetch_registers
;
2285 monitor_ops
.to_store_registers
= monitor_store_registers
;
2286 monitor_ops
.to_prepare_to_store
= monitor_prepare_to_store
;
2287 monitor_ops
.deprecated_xfer_memory
= monitor_xfer_memory
;
2288 monitor_ops
.to_files_info
= monitor_files_info
;
2289 monitor_ops
.to_insert_breakpoint
= monitor_insert_breakpoint
;
2290 monitor_ops
.to_remove_breakpoint
= monitor_remove_breakpoint
;
2291 monitor_ops
.to_kill
= monitor_kill
;
2292 monitor_ops
.to_load
= monitor_load
;
2293 monitor_ops
.to_create_inferior
= monitor_create_inferior
;
2294 monitor_ops
.to_mourn_inferior
= monitor_mourn_inferior
;
2295 monitor_ops
.to_stop
= monitor_stop
;
2296 monitor_ops
.to_rcmd
= monitor_rcmd
;
2297 monitor_ops
.to_log_command
= serial_log_command
;
2298 monitor_ops
.to_thread_alive
= monitor_thread_alive
;
2299 monitor_ops
.to_pid_to_str
= monitor_pid_to_str
;
2300 monitor_ops
.to_stratum
= process_stratum
;
2301 monitor_ops
.to_has_all_memory
= default_child_has_all_memory
;
2302 monitor_ops
.to_has_memory
= default_child_has_memory
;
2303 monitor_ops
.to_has_stack
= default_child_has_stack
;
2304 monitor_ops
.to_has_registers
= default_child_has_registers
;
2305 monitor_ops
.to_has_execution
= default_child_has_execution
;
2306 monitor_ops
.to_magic
= OPS_MAGIC
;
2307 } /* init_base_monitor_ops */
2309 /* Init the target_ops structure pointed at by OPS */
2312 init_monitor_ops (struct target_ops
*ops
)
2314 if (monitor_ops
.to_magic
!= OPS_MAGIC
)
2315 init_base_monitor_ops ();
2317 memcpy (ops
, &monitor_ops
, sizeof monitor_ops
);
2320 /* Define additional commands that are usually only used by monitors. */
2322 extern initialize_file_ftype _initialize_remote_monitors
; /* -Wmissing-prototypes */
2325 _initialize_remote_monitors (void)
2327 init_base_monitor_ops ();
2328 add_setshow_boolean_cmd ("hash", no_class
, &hashmark
, _("\
2329 Set display of activity while downloading a file."), _("\
2330 Show display of activity while downloading a file."), _("\
2331 When enabled, a hashmark \'#\' is displayed."),
2333 NULL
, /* FIXME: i18n: */
2334 &setlist
, &showlist
);
2336 add_setshow_zinteger_cmd ("monitor", no_class
, &monitor_debug_p
, _("\
2337 Set debugging of remote monitor communication."), _("\
2338 Show debugging of remote monitor communication."), _("\
2339 When enabled, communication between GDB and the remote monitor\n\
2342 NULL
, /* FIXME: i18n: */
2343 &setdebuglist
, &showdebuglist
);
2345 /* Yes, 42000 is arbitrary. The only sense out of it, is that it
2347 monitor_ptid
= ptid_build (42000, 0, 42000);