1 /* Remote debugging interface for boot monitors, for GDB.
2 Copyright 1990-1993, 1995-1997, 1999-2000, 2001 Free Software Foundation, Inc.
3 Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
4 Resurrected from the ashes by Stu Grossman.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* This file was derived from various remote-* modules. It is a collection
24 of generic support functions so GDB can talk directly to a ROM based
25 monitor. This saves use from having to hack an exception based handler
26 into existence, and makes for quick porting.
28 This module talks to a debug monitor called 'MONITOR', which
29 We communicate with MONITOR via either a direct serial line, or a TCP
30 (or possibly TELNET) stream to a terminal multiplexor,
31 which in turn talks to the target board. */
33 /* FIXME 32x64: This code assumes that registers and addresses are at
34 most 32 bits long. If they can be larger, you will need to declare
35 values as LONGEST and use %llx or some such to print values when
36 building commands to send to the monitor. Since we don't know of
37 any actual 64-bit targets with ROM monitors that use this code,
38 it's not an issue right now. -sts 4/18/96 */
46 #include "gdb_string.h"
47 #include <sys/types.h>
53 #include "gdb_regex.h"
56 static char *dev_name
;
57 static struct target_ops
*targ_ops
;
59 static void monitor_vsprintf (char *sndbuf
, char *pattern
, va_list args
);
61 static int readchar (int timeout
);
63 static void monitor_fetch_register (int regno
);
64 static void monitor_store_register (int regno
);
66 static void monitor_printable_string (char *newstr
, char *oldstr
, int len
);
67 static void monitor_error (char *function
, char *message
, CORE_ADDR memaddr
, int len
, char *string
, int final_char
);
68 static void monitor_detach (char *args
, int from_tty
);
69 static void monitor_resume (int pid
, int step
, enum target_signal sig
);
70 static void monitor_interrupt (int signo
);
71 static void monitor_interrupt_twice (int signo
);
72 static void monitor_interrupt_query (void);
73 static void monitor_wait_cleanup (void *old_timeout
);
75 static int monitor_wait (int pid
, struct target_waitstatus
*status
);
76 static void monitor_fetch_registers (int regno
);
77 static void monitor_store_registers (int regno
);
78 static void monitor_prepare_to_store (void);
79 static int monitor_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
,
81 struct mem_attrib
*attrib
,
82 struct target_ops
*target
);
83 static void monitor_files_info (struct target_ops
*ops
);
84 static int monitor_insert_breakpoint (CORE_ADDR addr
, char *shadow
);
85 static int monitor_remove_breakpoint (CORE_ADDR addr
, char *shadow
);
86 static void monitor_kill (void);
87 static void monitor_load (char *file
, int from_tty
);
88 static void monitor_mourn_inferior (void);
89 static void monitor_stop (void);
91 static int monitor_read_memory (CORE_ADDR addr
, char *myaddr
, int len
);
92 static int monitor_write_memory (CORE_ADDR addr
, char *myaddr
, int len
);
93 static int monitor_write_memory_bytes (CORE_ADDR addr
, char *myaddr
, int len
);
94 static int monitor_write_memory_block (CORE_ADDR memaddr
,
95 char *myaddr
, int len
);
96 static int monitor_expect_regexp (struct re_pattern_buffer
*pat
,
97 char *buf
, int buflen
);
98 static void monitor_dump_regs (void);
100 static int from_hex (int a
);
101 static unsigned long get_hex_word (void);
103 static void parse_register_dump (char *, int);
105 static struct monitor_ops
*current_monitor
;
107 static int hashmark
; /* flag set by "set hash" */
109 static int timeout
= 30;
111 static int in_monitor_wait
= 0; /* Non-zero means we are in monitor_wait() */
113 static void (*ofunc
) (); /* Old SIGINT signal handler */
115 static CORE_ADDR
*breakaddr
;
117 /* Descriptor for I/O to remote machine. Initialize it to NULL so
118 that monitor_open knows that we don't have a file open when the
121 static serial_t monitor_desc
= NULL
;
123 /* Pointer to regexp pattern matching data */
125 static struct re_pattern_buffer register_pattern
;
126 static char register_fastmap
[256];
128 static struct re_pattern_buffer getmem_resp_delim_pattern
;
129 static char getmem_resp_delim_fastmap
[256];
131 static int dump_reg_flag
; /* Non-zero means do a dump_registers cmd when
132 monitor_wait wakes up. */
134 static int first_time
= 0; /* is this the first time we're executing after
135 gaving created the child proccess? */
137 #define TARGET_BUF_SIZE 2048
139 /* Monitor specific debugging information. Typically only useful to
140 the developer of a new monitor interface. */
142 static void monitor_debug (const char *fmt
, ...) ATTR_FORMAT(printf
, 1, 2);
144 static int monitor_debug_p
= 0;
146 /* NOTE: This file alternates between monitor_debug_p and remote_debug
147 when determining if debug information is printed. Perhaphs this
148 could be simplified. */
151 monitor_debug (const char *fmt
, ...)
156 va_start (args
, fmt
);
157 vfprintf_filtered (gdb_stdlog
, fmt
, args
);
163 /* Convert a string into a printable representation, Return # byte in
164 the new string. When LEN is >0 it specifies the size of the
165 string. Otherwize strlen(oldstr) is used. */
168 monitor_printable_string (char *newstr
, char *oldstr
, int len
)
174 len
= strlen (oldstr
);
176 for (i
= 0; i
< len
; i
++)
187 sprintf (newstr
, "\\x%02x", ch
& 0xff);
226 /* Print monitor errors with a string, converting the string to printable
230 monitor_error (char *function
, char *message
,
231 CORE_ADDR memaddr
, int len
, char *string
, int final_char
)
233 int real_len
= (len
== 0 && string
!= (char *) 0) ? strlen (string
) : len
;
234 char *safe_string
= alloca ((real_len
* 4) + 1);
235 monitor_printable_string (safe_string
, string
, real_len
);
238 error ("%s (0x%s): %s: %s%c", function
, paddr_nz (memaddr
), message
, safe_string
, final_char
);
240 error ("%s (0x%s): %s: %s", function
, paddr_nz (memaddr
), message
, safe_string
);
243 /* Convert hex digit A to a number. */
248 if (a
>= '0' && a
<= '9')
250 else if (a
>= 'a' && a
<= 'f')
252 else if (a
>= 'A' && a
<= 'F')
255 error ("Invalid hex digit %d", a
);
258 /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses
260 This function exists to get around the problem that many host platforms
261 don't have a printf that can print 64-bit addresses. The %A format
262 specification is recognized as a special case, and causes the argument
263 to be printed as a 64-bit hexadecimal address.
265 Only format specifiers of the form "[0-9]*[a-z]" are recognized.
266 If it is a '%s' format, the argument is a string; otherwise the
267 argument is assumed to be a long integer.
269 %% is also turned into a single %.
273 monitor_vsprintf (char *sndbuf
, char *pattern
, va_list args
)
283 for (p
= pattern
; *p
; p
++)
287 /* Copy the format specifier to a separate buffer. */
289 for (i
= 1; *p
>= '0' && *p
<= '9' && i
< (int) sizeof (format
) - 2;
292 format
[i
] = fmt
= *p
;
293 format
[i
+ 1] = '\0';
295 /* Fetch the next argument and print it. */
299 strcpy (sndbuf
, "%");
302 arg_addr
= va_arg (args
, CORE_ADDR
);
303 strcpy (sndbuf
, paddr_nz (arg_addr
));
306 arg_string
= va_arg (args
, char *);
307 sprintf (sndbuf
, format
, arg_string
);
310 arg_int
= va_arg (args
, long);
311 sprintf (sndbuf
, format
, arg_int
);
314 sndbuf
+= strlen (sndbuf
);
323 /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo.
324 Works just like printf. */
327 monitor_printf_noecho (char *pattern
,...)
333 va_start (args
, pattern
);
335 monitor_vsprintf (sndbuf
, pattern
, args
);
337 len
= strlen (sndbuf
);
338 if (len
+ 1 > sizeof sndbuf
)
343 char *safe_string
= (char *) alloca ((strlen (sndbuf
) * 4) + 1);
344 monitor_printable_string (safe_string
, sndbuf
, 0);
345 fprintf_unfiltered (gdb_stdlog
, "sent[%s]\n", safe_string
);
348 monitor_write (sndbuf
, len
);
351 /* monitor_printf -- Send data to monitor and check the echo. Works just like
355 monitor_printf (char *pattern
,...)
361 va_start (args
, pattern
);
363 monitor_vsprintf (sndbuf
, pattern
, args
);
365 len
= strlen (sndbuf
);
366 if (len
+ 1 > sizeof sndbuf
)
371 char *safe_string
= (char *) alloca ((len
* 4) + 1);
372 monitor_printable_string (safe_string
, sndbuf
, 0);
373 fprintf_unfiltered (gdb_stdlog
, "sent[%s]\n", safe_string
);
376 monitor_write (sndbuf
, len
);
378 /* We used to expect that the next immediate output was the characters we
379 just output, but sometimes some extra junk appeared before the characters
380 we expected, like an extra prompt, or a portmaster sending telnet negotiations.
381 So, just start searching for what we sent, and skip anything unknown. */
382 monitor_debug ("ExpectEcho\n");
383 monitor_expect (sndbuf
, (char *) 0, 0);
387 /* Write characters to the remote system. */
390 monitor_write (char *buf
, int buflen
)
392 if (SERIAL_WRITE (monitor_desc
, buf
, buflen
))
393 fprintf_unfiltered (gdb_stderr
, "SERIAL_WRITE failed: %s\n",
394 safe_strerror (errno
));
398 /* Read a binary character from the remote system, doing all the fancy
399 timeout stuff, but without interpreting the character in any way,
400 and without printing remote debug information. */
403 monitor_readchar (void)
411 c
= SERIAL_READCHAR (monitor_desc
, timeout
);
414 c
&= 0xff; /* don't lose bit 7 */
421 if (c
== SERIAL_TIMEOUT
)
422 error ("Timeout reading from remote system.");
424 perror_with_name ("remote-monitor");
428 /* Read a character from the remote system, doing all the fancy
432 readchar (int timeout
)
437 last_random
, last_nl
, last_cr
, last_crnl
445 c
= SERIAL_READCHAR (monitor_desc
, timeout
);
450 /* This seems to interfere with proper function of the
452 if (monitor_debug_p
|| remote_debug
)
457 puts_debug ("read -->", buf
, "<--");
462 /* Canonicialize \n\r combinations into one \r */
463 if ((current_monitor
->flags
& MO_HANDLE_NL
) != 0)
465 if ((c
== '\r' && state
== last_nl
)
466 || (c
== '\n' && state
== last_cr
))
487 if (c
== SERIAL_TIMEOUT
)
489 /* I fail to see how detaching here can be useful */
490 if (in_monitor_wait
) /* Watchdog went off */
492 target_mourn_inferior ();
493 error ("GDB serial timeout has expired. Target detached.\n");
497 error ("Timeout reading from remote system.");
499 perror_with_name ("remote-monitor");
502 /* Scan input from the remote system, until STRING is found. If BUF is non-
503 zero, then collect input until we have collected either STRING or BUFLEN-1
504 chars. In either case we terminate BUF with a 0. If input overflows BUF
505 because STRING can't be found, return -1, else return number of chars in BUF
506 (minus the terminating NUL). Note that in the non-overflow case, STRING
507 will be at the end of BUF. */
510 monitor_expect (char *string
, char *buf
, int buflen
)
513 int obuflen
= buflen
;
515 extern struct target_ops
*targ_ops
;
519 char *safe_string
= (char *) alloca ((strlen (string
) * 4) + 1);
520 monitor_printable_string (safe_string
, string
, 0);
521 fprintf_unfiltered (gdb_stdlog
, "MON Expecting '%s'\n", safe_string
);
536 c
= readchar (timeout
);
543 c
= readchar (timeout
);
545 /* Don't expect any ^C sent to be echoed */
547 if (*p
== '\003' || c
== *p
)
557 return obuflen
- buflen
;
563 else if ((c
== '\021' || c
== '\023') &&
564 (STREQ (targ_ops
->to_shortname
, "m32r")
565 || STREQ (targ_ops
->to_shortname
, "mon2000")))
566 { /* m32r monitor emits random DC1/DC3 chars */
571 /* We got a character that doesn't match the string. We need to
572 back up p, but how far? If we're looking for "..howdy" and the
573 monitor sends "...howdy"? There's certainly a match in there,
574 but when we receive the third ".", we won't find it if we just
575 restart the matching at the beginning of the string.
577 This is a Boyer-Moore kind of situation. We want to reset P to
578 the end of the longest prefix of STRING that is a suffix of
579 what we've read so far. In the example above, that would be
580 ".." --- the longest prefix of "..howdy" that is a suffix of
581 "...". This longest prefix could be the empty string, if C
582 is nowhere to be found in STRING.
584 If this longest prefix is not the empty string, it must contain
585 C, so let's search from the end of STRING for instances of C,
586 and see if the portion of STRING before that is a suffix of
587 what we read before C. Actually, we can search backwards from
588 p, since we know no prefix can be longer than that.
590 Note that we can use STRING itself, along with C, as a record
591 of what we've received so far. :) */
594 for (i
= (p
- string
) - 1; i
>= 0; i
--)
597 /* Is this prefix a suffix of what we've read so far?
599 string[0 .. i-1] == string[p - i, p - 1]? */
600 if (! memcmp (string
, p
- i
, i
))
612 /* Search for a regexp. */
615 monitor_expect_regexp (struct re_pattern_buffer
*pat
, char *buf
, int buflen
)
619 monitor_debug ("MON Expecting regexp\n");
624 mybuf
= alloca (TARGET_BUF_SIZE
);
625 buflen
= TARGET_BUF_SIZE
;
633 if (p
- mybuf
>= buflen
)
634 { /* Buffer about to overflow */
636 /* On overflow, we copy the upper half of the buffer to the lower half. Not
637 great, but it usually works... */
639 memcpy (mybuf
, mybuf
+ buflen
/ 2, buflen
/ 2);
640 p
= mybuf
+ buflen
/ 2;
643 *p
++ = readchar (timeout
);
645 retval
= re_search (pat
, mybuf
, p
- mybuf
, 0, p
- mybuf
, NULL
);
651 /* Keep discarding input until we see the MONITOR prompt.
653 The convention for dealing with the prompt is that you
655 o *then* wait for the prompt.
657 Thus the last thing that a procedure does with the serial line will
658 be an monitor_expect_prompt(). Exception: monitor_resume does not
659 wait for the prompt, because the terminal is being handed over to
660 the inferior. However, the next thing which happens after that is
661 a monitor_wait which does wait for the prompt. Note that this
662 includes abnormal exit, e.g. error(). This is necessary to prevent
663 getting into states from which we can't recover. */
666 monitor_expect_prompt (char *buf
, int buflen
)
668 monitor_debug ("MON Expecting prompt\n");
669 return monitor_expect (current_monitor
->prompt
, buf
, buflen
);
672 /* Get N 32-bit words from remote, each preceded by a space, and put
673 them in registers starting at REGNO. */
684 ch
= readchar (timeout
);
685 while (isspace (ch
));
689 for (i
= 7; i
>= 1; i
--)
691 ch
= readchar (timeout
);
694 val
= (val
<< 4) | from_hex (ch
);
702 compile_pattern (char *pattern
, struct re_pattern_buffer
*compiled_pattern
,
708 compiled_pattern
->fastmap
= fastmap
;
710 tmp
= re_set_syntax (RE_SYNTAX_EMACS
);
711 val
= re_compile_pattern (pattern
,
717 error ("compile_pattern: Can't compile pattern string `%s': %s!", pattern
, val
);
720 re_compile_fastmap (compiled_pattern
);
723 /* Open a connection to a remote debugger. NAME is the filename used
724 for communication. */
727 monitor_open (char *args
, struct monitor_ops
*mon_ops
, int from_tty
)
732 if (mon_ops
->magic
!= MONITOR_OPS_MAGIC
)
733 error ("Magic number of monitor_ops struct wrong.");
735 targ_ops
= mon_ops
->target
;
736 name
= targ_ops
->to_shortname
;
739 error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\
740 `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name
, name
);
742 target_preopen (from_tty
);
744 /* Setup pattern for register dump */
746 if (mon_ops
->register_pattern
)
747 compile_pattern (mon_ops
->register_pattern
, ®ister_pattern
,
750 if (mon_ops
->getmem
.resp_delim
)
751 compile_pattern (mon_ops
->getmem
.resp_delim
, &getmem_resp_delim_pattern
,
752 getmem_resp_delim_fastmap
);
754 unpush_target (targ_ops
);
758 dev_name
= xstrdup (args
);
760 monitor_desc
= SERIAL_OPEN (dev_name
);
763 perror_with_name (dev_name
);
767 if (SERIAL_SETBAUDRATE (monitor_desc
, baud_rate
))
769 SERIAL_CLOSE (monitor_desc
);
770 perror_with_name (dev_name
);
774 SERIAL_RAW (monitor_desc
);
776 SERIAL_FLUSH_INPUT (monitor_desc
);
778 /* some systems only work with 2 stop bits */
780 SERIAL_SETSTOPBITS (monitor_desc
, mon_ops
->stopbits
);
782 current_monitor
= mon_ops
;
784 /* See if we can wake up the monitor. First, try sending a stop sequence,
785 then send the init strings. Last, remove all breakpoints. */
787 if (current_monitor
->stop
)
790 if ((current_monitor
->flags
& MO_NO_ECHO_ON_OPEN
) == 0)
792 monitor_debug ("EXP Open echo\n");
793 monitor_expect_prompt (NULL
, 0);
797 /* wake up the monitor and see if it's alive */
798 for (p
= mon_ops
->init
; *p
!= NULL
; p
++)
800 /* Some of the characters we send may not be echoed,
801 but we hope to get a prompt at the end of it all. */
803 if ((current_monitor
->flags
& MO_NO_ECHO_ON_OPEN
) == 0)
806 monitor_printf_noecho (*p
);
807 monitor_expect_prompt (NULL
, 0);
810 SERIAL_FLUSH_INPUT (monitor_desc
);
812 /* Alloc breakpoints */
813 if (mon_ops
->set_break
!= NULL
)
815 if (mon_ops
->num_breakpoints
== 0)
816 mon_ops
->num_breakpoints
= 8;
818 breakaddr
= (CORE_ADDR
*) xmalloc (mon_ops
->num_breakpoints
* sizeof (CORE_ADDR
));
819 memset (breakaddr
, 0, mon_ops
->num_breakpoints
* sizeof (CORE_ADDR
));
822 /* Remove all breakpoints */
824 if (mon_ops
->clr_all_break
)
826 monitor_printf (mon_ops
->clr_all_break
);
827 monitor_expect_prompt (NULL
, 0);
831 printf_unfiltered ("Remote target %s connected to %s\n", name
, dev_name
);
833 push_target (targ_ops
);
835 inferior_pid
= 42000; /* Make run command think we are busy... */
837 /* Give monitor_wait something to read */
839 monitor_printf (current_monitor
->line_term
);
844 /* Close out all files and local state before this target loses
848 monitor_close (int quitting
)
851 SERIAL_CLOSE (monitor_desc
);
853 /* Free breakpoint memory */
854 if (breakaddr
!= NULL
)
863 /* Terminate the open connection to the remote debugger. Use this
864 when you want to detach and do something else with your gdb. */
867 monitor_detach (char *args
, int from_tty
)
869 pop_target (); /* calls monitor_close to do the real work */
871 printf_unfiltered ("Ending remote %s debugging\n", target_shortname
);
874 /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
877 monitor_supply_register (int regno
, char *valstr
)
880 unsigned char regbuf
[MAX_REGISTER_RAW_SIZE
];
885 while (p
&& *p
!= '\0')
887 if (*p
== '\r' || *p
== '\n')
898 if (!isxdigit (*p
) && *p
!= 'x')
904 val
+= fromhex (*p
++);
906 monitor_debug ("Supplying Register %d %s\n", regno
, valstr
);
909 error ("monitor_supply_register (%d): bad value from monitor: %s.",
912 /* supply register stores in target byte order, so swap here */
914 store_unsigned_integer (regbuf
, REGISTER_RAW_SIZE (regno
), val
);
916 supply_register (regno
, regbuf
);
921 /* Tell the remote machine to resume. */
924 monitor_resume (int pid
, int step
, enum target_signal sig
)
926 /* Some monitors require a different command when starting a program */
927 monitor_debug ("MON resume\n");
928 if (current_monitor
->flags
& MO_RUN_FIRST_TIME
&& first_time
== 1)
931 monitor_printf ("run\r");
932 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
937 monitor_printf (current_monitor
->step
);
940 if (current_monitor
->continue_hook
)
941 (*current_monitor
->continue_hook
) ();
943 monitor_printf (current_monitor
->cont
);
944 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
949 /* Parse the output of a register dump command. A monitor specific
950 regexp is used to extract individual register descriptions of the
951 form REG=VAL. Each description is split up into a name and a value
952 string which are passed down to monitor specific code. */
955 parse_register_dump (char *buf
, int len
)
957 monitor_debug ("MON Parsing register dump\n");
960 int regnamelen
, vallen
;
962 /* Element 0 points to start of register name, and element 1
963 points to the start of the register value. */
964 struct re_registers register_strings
;
966 memset (®ister_strings
, 0, sizeof (struct re_registers
));
968 if (re_search (®ister_pattern
, buf
, len
, 0, len
,
969 ®ister_strings
) == -1)
972 regnamelen
= register_strings
.end
[1] - register_strings
.start
[1];
973 regname
= buf
+ register_strings
.start
[1];
974 vallen
= register_strings
.end
[2] - register_strings
.start
[2];
975 val
= buf
+ register_strings
.start
[2];
977 current_monitor
->supply_register (regname
, regnamelen
, val
, vallen
);
979 buf
+= register_strings
.end
[0];
980 len
-= register_strings
.end
[0];
984 /* Send ^C to target to halt it. Target will respond, and send us a
988 monitor_interrupt (int signo
)
990 /* If this doesn't work, try more severe steps. */
991 signal (signo
, monitor_interrupt_twice
);
993 if (monitor_debug_p
|| remote_debug
)
994 fprintf_unfiltered (gdb_stdlog
, "monitor_interrupt called\n");
999 /* The user typed ^C twice. */
1002 monitor_interrupt_twice (int signo
)
1004 signal (signo
, ofunc
);
1006 monitor_interrupt_query ();
1008 signal (signo
, monitor_interrupt
);
1011 /* Ask the user what to do when an interrupt is received. */
1014 monitor_interrupt_query (void)
1016 target_terminal_ours ();
1018 if (query ("Interrupted while waiting for the program.\n\
1019 Give up (and stop debugging it)? "))
1021 target_mourn_inferior ();
1022 return_to_top_level (RETURN_QUIT
);
1025 target_terminal_inferior ();
1029 monitor_wait_cleanup (void *old_timeout
)
1031 timeout
= *(int *) old_timeout
;
1032 signal (SIGINT
, ofunc
);
1033 in_monitor_wait
= 0;
1039 monitor_wait_filter (char *buf
,
1042 struct target_waitstatus
*status
1048 resp_len
= monitor_expect_prompt (buf
, bufmax
);
1049 *ext_resp_len
= resp_len
;
1052 fprintf_unfiltered (gdb_stderr
, "monitor_wait: excessive response from monitor: %s.", buf
);
1054 while (resp_len
< 0);
1056 /* Print any output characters that were preceded by ^O. */
1057 /* FIXME - This would be great as a user settabgle flag */
1058 if (monitor_debug_p
|| remote_debug
1059 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1063 for (i
= 0; i
< resp_len
- 1; i
++)
1065 putchar_unfiltered (buf
[++i
]);
1071 /* Wait until the remote machine stops, then return, storing status in
1072 status just as `wait' would. */
1075 monitor_wait (int pid
, struct target_waitstatus
*status
)
1077 int old_timeout
= timeout
;
1078 char buf
[TARGET_BUF_SIZE
];
1080 struct cleanup
*old_chain
;
1082 status
->kind
= TARGET_WAITKIND_EXITED
;
1083 status
->value
.integer
= 0;
1085 old_chain
= make_cleanup (monitor_wait_cleanup
, &old_timeout
);
1086 monitor_debug ("MON wait\n");
1089 /* This is somthing other than a maintenance command */
1090 in_monitor_wait
= 1;
1091 timeout
= watchdog
> 0 ? watchdog
: -1;
1093 timeout
= -1; /* Don't time out -- user program is running. */
1096 ofunc
= (void (*)()) signal (SIGINT
, monitor_interrupt
);
1098 if (current_monitor
->wait_filter
)
1099 (*current_monitor
->wait_filter
) (buf
, sizeof (buf
), &resp_len
, status
);
1101 monitor_wait_filter (buf
, sizeof (buf
), &resp_len
, status
);
1103 #if 0 /* Transferred to monitor wait filter */
1106 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1109 fprintf_unfiltered (gdb_stderr
, "monitor_wait: excessive response from monitor: %s.", buf
);
1111 while (resp_len
< 0);
1113 /* Print any output characters that were preceded by ^O. */
1114 /* FIXME - This would be great as a user settabgle flag */
1115 if (monitor_debug_p
|| remote_debug
1116 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1120 for (i
= 0; i
< resp_len
- 1; i
++)
1122 putchar_unfiltered (buf
[++i
]);
1126 signal (SIGINT
, ofunc
);
1128 timeout
= old_timeout
;
1130 if (dump_reg_flag
&& current_monitor
->dump_registers
)
1133 monitor_printf (current_monitor
->dump_registers
);
1134 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1137 if (current_monitor
->register_pattern
)
1138 parse_register_dump (buf
, resp_len
);
1140 monitor_debug ("Wait fetching registers after stop\n");
1141 monitor_dump_regs ();
1144 status
->kind
= TARGET_WAITKIND_STOPPED
;
1145 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1147 discard_cleanups (old_chain
);
1149 in_monitor_wait
= 0;
1151 return inferior_pid
;
1154 /* Fetch register REGNO, or all registers if REGNO is -1. Returns
1158 monitor_fetch_register (int regno
)
1165 regbuf
= alloca (MAX_REGISTER_RAW_SIZE
* 2 + 1);
1166 zerobuf
= alloca (MAX_REGISTER_RAW_SIZE
);
1167 memset (zerobuf
, 0, MAX_REGISTER_RAW_SIZE
);
1169 name
= current_monitor
->regnames
[regno
];
1170 monitor_debug ("MON fetchreg %d '%s'\n", regno
, name
? name
: "(null name)");
1172 if (!name
|| (*name
== '\0'))
1174 monitor_debug ("No register known for %d\n", regno
);
1175 supply_register (regno
, zerobuf
);
1179 /* send the register examine command */
1181 monitor_printf (current_monitor
->getreg
.cmd
, name
);
1183 /* If RESP_DELIM is specified, we search for that as a leading
1184 delimiter for the register value. Otherwise, we just start
1185 searching from the start of the buf. */
1187 if (current_monitor
->getreg
.resp_delim
)
1189 monitor_debug ("EXP getreg.resp_delim\n");
1190 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1191 /* Handle case of first 32 registers listed in pairs. */
1192 if (current_monitor
->flags
& MO_32_REGS_PAIRED
1193 && (regno
& 1) != 0 && regno
< 32)
1195 monitor_debug ("EXP getreg.resp_delim\n");
1196 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1200 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */
1201 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1204 c
= readchar (timeout
);
1206 c
= readchar (timeout
);
1207 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1210 error ("Bad value returned from monitor while fetching register %x.",
1214 /* Read upto the maximum number of hex digits for this register, skipping
1215 spaces, but stop reading if something else is seen. Some monitors
1216 like to drop leading zeros. */
1218 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
) * 2; i
++)
1221 c
= readchar (timeout
);
1223 c
= readchar (timeout
);
1231 regbuf
[i
] = '\000'; /* terminate the number */
1232 monitor_debug ("REGVAL '%s'\n", regbuf
);
1234 /* If TERM is present, we wait for that to show up. Also, (if TERM
1235 is present), we will send TERM_CMD if that is present. In any
1236 case, we collect all of the output into buf, and then wait for
1237 the normal prompt. */
1239 if (current_monitor
->getreg
.term
)
1241 monitor_debug ("EXP getreg.term\n");
1242 monitor_expect (current_monitor
->getreg
.term
, NULL
, 0); /* get response */
1245 if (current_monitor
->getreg
.term_cmd
)
1247 monitor_debug ("EMIT getreg.term.cmd\n");
1248 monitor_printf (current_monitor
->getreg
.term_cmd
);
1250 if (!current_monitor
->getreg
.term
|| /* Already expected or */
1251 current_monitor
->getreg
.term_cmd
) /* ack expected */
1252 monitor_expect_prompt (NULL
, 0); /* get response */
1254 monitor_supply_register (regno
, regbuf
);
1257 /* Sometimes, it takes several commands to dump the registers */
1258 /* This is a primitive for use by variations of monitor interfaces in
1259 case they need to compose the operation.
1262 monitor_dump_reg_block (char *block_cmd
)
1264 char buf
[TARGET_BUF_SIZE
];
1266 monitor_printf (block_cmd
);
1267 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1268 parse_register_dump (buf
, resp_len
);
1273 /* Read the remote registers into the block regs. */
1274 /* Call the specific function if it has been provided */
1277 monitor_dump_regs (void)
1279 char buf
[TARGET_BUF_SIZE
];
1281 if (current_monitor
->dumpregs
)
1282 (*(current_monitor
->dumpregs
)) (); /* call supplied function */
1283 else if (current_monitor
->dump_registers
) /* default version */
1285 monitor_printf (current_monitor
->dump_registers
);
1286 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1287 parse_register_dump (buf
, resp_len
);
1290 abort (); /* Need some way to read registers */
1294 monitor_fetch_registers (int regno
)
1296 monitor_debug ("MON fetchregs\n");
1297 if (current_monitor
->getreg
.cmd
)
1301 monitor_fetch_register (regno
);
1305 for (regno
= 0; regno
< NUM_REGS
; regno
++)
1306 monitor_fetch_register (regno
);
1310 monitor_dump_regs ();
1314 /* Store register REGNO, or all if REGNO == 0. Return errno value. */
1317 monitor_store_register (int regno
)
1322 name
= current_monitor
->regnames
[regno
];
1323 if (!name
|| (*name
== '\0'))
1325 monitor_debug ("MON Cannot store unknown register\n");
1329 val
= read_register (regno
);
1330 monitor_debug ("MON storeg %d %s\n", regno
,
1331 phex (val
, REGISTER_RAW_SIZE (regno
)));
1333 /* send the register deposit command */
1335 if (current_monitor
->flags
& MO_REGISTER_VALUE_FIRST
)
1336 monitor_printf (current_monitor
->setreg
.cmd
, val
, name
);
1337 else if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1338 monitor_printf (current_monitor
->setreg
.cmd
, name
);
1340 monitor_printf (current_monitor
->setreg
.cmd
, name
, val
);
1342 if (current_monitor
->setreg
.term
)
1344 monitor_debug ("EXP setreg.term\n");
1345 monitor_expect (current_monitor
->setreg
.term
, NULL
, 0);
1346 if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1347 monitor_printf ("%s\r", paddr_nz (val
));
1348 monitor_expect_prompt (NULL
, 0);
1351 monitor_expect_prompt (NULL
, 0);
1352 if (current_monitor
->setreg
.term_cmd
) /* Mode exit required */
1354 monitor_debug ("EXP setreg_termcmd\n");
1355 monitor_printf ("%s", current_monitor
->setreg
.term_cmd
);
1356 monitor_expect_prompt (NULL
, 0);
1358 } /* monitor_store_register */
1360 /* Store the remote registers. */
1363 monitor_store_registers (int regno
)
1367 monitor_store_register (regno
);
1371 for (regno
= 0; regno
< NUM_REGS
; regno
++)
1372 monitor_store_register (regno
);
1375 /* Get ready to modify the registers array. On machines which store
1376 individual registers, this doesn't need to do anything. On machines
1377 which store all the registers in one fell swoop, this makes sure
1378 that registers contains all the registers from the program being
1382 monitor_prepare_to_store (void)
1384 /* Do nothing, since we can store individual regs */
1388 monitor_files_info (struct target_ops
*ops
)
1390 printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name
, baud_rate
);
1394 monitor_write_memory (CORE_ADDR memaddr
, char *myaddr
, int len
)
1396 unsigned int val
, hostval
;
1400 monitor_debug ("MON write %d %s\n", len
, paddr (memaddr
));
1402 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1403 memaddr
= ADDR_BITS_REMOVE (memaddr
);
1405 /* Use memory fill command for leading 0 bytes. */
1407 if (current_monitor
->fill
)
1409 for (i
= 0; i
< len
; i
++)
1413 if (i
> 4) /* More than 4 zeros is worth doing */
1415 monitor_debug ("MON FILL %d\n", i
);
1416 if (current_monitor
->flags
& MO_FILL_USES_ADDR
)
1417 monitor_printf (current_monitor
->fill
, memaddr
, (memaddr
+ i
) - 1, 0);
1419 monitor_printf (current_monitor
->fill
, memaddr
, i
, 0);
1421 monitor_expect_prompt (NULL
, 0);
1428 /* Can't actually use long longs if VAL is an int (nice idea, though). */
1429 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->setmem
.cmdll
)
1432 cmd
= current_monitor
->setmem
.cmdll
;
1436 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->setmem
.cmdl
)
1439 cmd
= current_monitor
->setmem
.cmdl
;
1441 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->setmem
.cmdw
)
1444 cmd
= current_monitor
->setmem
.cmdw
;
1449 cmd
= current_monitor
->setmem
.cmdb
;
1452 val
= extract_unsigned_integer (myaddr
, len
);
1456 hostval
= *(unsigned int *) myaddr
;
1457 monitor_debug ("Hostval(%08x) val(%08x)\n", hostval
, val
);
1461 if (current_monitor
->flags
& MO_NO_ECHO_ON_SETMEM
)
1462 monitor_printf_noecho (cmd
, memaddr
, val
);
1463 else if (current_monitor
->flags
& MO_SETMEM_INTERACTIVE
)
1466 monitor_printf_noecho (cmd
, memaddr
);
1468 if (current_monitor
->setmem
.term
)
1470 monitor_debug ("EXP setmem.term");
1471 monitor_expect (current_monitor
->setmem
.term
, NULL
, 0);
1472 monitor_printf ("%x\r", val
);
1474 if (current_monitor
->setmem
.term_cmd
)
1475 { /* Emit this to get out of the memory editing state */
1476 monitor_printf ("%s", current_monitor
->setmem
.term_cmd
);
1477 /* Drop through to expecting a prompt */
1481 monitor_printf (cmd
, memaddr
, val
);
1483 monitor_expect_prompt (NULL
, 0);
1490 monitor_write_even_block (CORE_ADDR memaddr
, char *myaddr
, int len
)
1494 /* Enter the sub mode */
1495 monitor_printf (current_monitor
->setmem
.cmdl
, memaddr
);
1496 monitor_expect_prompt (NULL
, 0);
1500 val
= extract_unsigned_integer (myaddr
, 4); /* REALLY */
1501 monitor_printf ("%x\r", val
);
1505 monitor_debug (" @ %s\n", paddr (memaddr
));
1506 /* If we wanted to, here we could validate the address */
1507 monitor_expect_prompt (NULL
, 0);
1509 /* Now exit the sub mode */
1510 monitor_printf (current_monitor
->getreg
.term_cmd
);
1511 monitor_expect_prompt (NULL
, 0);
1517 monitor_write_memory_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
1523 /* Enter the sub mode */
1524 monitor_printf (current_monitor
->setmem
.cmdb
, memaddr
);
1525 monitor_expect_prompt (NULL
, 0);
1529 monitor_printf ("%x\r", val
);
1533 /* If we wanted to, here we could validate the address */
1534 monitor_expect_prompt (NULL
, 0);
1537 /* Now exit the sub mode */
1538 monitor_printf (current_monitor
->getreg
.term_cmd
);
1539 monitor_expect_prompt (NULL
, 0);
1545 longlongendswap (unsigned char *a
)
1554 *(a
+ i
) = *(a
+ j
);
1559 /* Format 32 chars of long long value, advance the pointer */
1560 static char *hexlate
= "0123456789abcdef";
1562 longlong_hexchars (unsigned long long value
,
1572 static unsigned char disbuf
[8]; /* disassembly buffer */
1573 unsigned char *scan
, *limit
; /* loop controls */
1574 unsigned char c
, nib
;
1579 unsigned long long *dp
;
1580 dp
= (unsigned long long *) scan
;
1583 longlongendswap (disbuf
); /* FIXME: ONly on big endian hosts */
1584 while (scan
< limit
)
1586 c
= *scan
++; /* a byte of our long long value */
1592 leadzero
= 0; /* henceforth we print even zeroes */
1594 nib
= c
>> 4; /* high nibble bits */
1595 *outbuff
++ = hexlate
[nib
];
1596 nib
= c
& 0x0f; /* low nibble bits */
1597 *outbuff
++ = hexlate
[nib
];
1601 } /* longlong_hexchars */
1605 /* I am only going to call this when writing virtual byte streams.
1606 Which possably entails endian conversions
1609 monitor_write_memory_longlongs (CORE_ADDR memaddr
, char *myaddr
, int len
)
1611 static char hexstage
[20]; /* At least 16 digits required, plus null */
1616 llptr
= (unsigned long long *) myaddr
;
1619 monitor_printf (current_monitor
->setmem
.cmdll
, memaddr
);
1620 monitor_expect_prompt (NULL
, 0);
1624 endstring
= longlong_hexchars (*llptr
, hexstage
);
1625 *endstring
= '\0'; /* NUll terminate for printf */
1626 monitor_printf ("%s\r", hexstage
);
1630 /* If we wanted to, here we could validate the address */
1631 monitor_expect_prompt (NULL
, 0);
1634 /* Now exit the sub mode */
1635 monitor_printf (current_monitor
->getreg
.term_cmd
);
1636 monitor_expect_prompt (NULL
, 0);
1642 /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
1643 /* This is for the large blocks of memory which may occur in downloading.
1644 And for monitors which use interactive entry,
1645 And for monitors which do not have other downloading methods.
1646 Without this, we will end up calling monitor_write_memory many times
1647 and do the entry and exit of the sub mode many times
1648 This currently assumes...
1649 MO_SETMEM_INTERACTIVE
1650 ! MO_NO_ECHO_ON_SETMEM
1651 To use this, the you have to patch the monitor_cmds block with
1652 this function. Otherwise, its not tuned up for use by all
1657 monitor_write_memory_block (CORE_ADDR memaddr
, char *myaddr
, int len
)
1661 /* FIXME: This would be a good place to put the zero test */
1663 if ((len
> 8) && (((len
& 0x07)) == 0) && current_monitor
->setmem
.cmdll
)
1665 return monitor_write_memory_longlongs (memaddr
, myaddr
, len
);
1672 written
= monitor_write_even_block (memaddr
, myaddr
, len
);
1673 /* Adjust calling parameters by written amount */
1679 written
= monitor_write_memory_bytes (memaddr
, myaddr
, len
);
1683 /* This is an alternate form of monitor_read_memory which is used for monitors
1684 which can only read a single byte/word/etc. at a time. */
1687 monitor_read_memory_single (CORE_ADDR memaddr
, char *myaddr
, int len
)
1690 char membuf
[sizeof (int) * 2 + 1];
1695 monitor_debug ("MON read single\n");
1697 /* Can't actually use long longs (nice idea, though). In fact, the
1698 call to strtoul below will fail if it tries to convert a value
1699 that's too big to fit in a long. */
1700 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->getmem
.cmdll
)
1703 cmd
= current_monitor
->getmem
.cmdll
;
1707 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->getmem
.cmdl
)
1710 cmd
= current_monitor
->getmem
.cmdl
;
1712 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->getmem
.cmdw
)
1715 cmd
= current_monitor
->getmem
.cmdw
;
1720 cmd
= current_monitor
->getmem
.cmdb
;
1723 /* Send the examine command. */
1725 monitor_printf (cmd
, memaddr
);
1727 /* If RESP_DELIM is specified, we search for that as a leading
1728 delimiter for the memory value. Otherwise, we just start
1729 searching from the start of the buf. */
1731 if (current_monitor
->getmem
.resp_delim
)
1733 monitor_debug ("EXP getmem.resp_delim\n");
1734 monitor_expect_regexp (&getmem_resp_delim_pattern
, NULL
, 0);
1737 /* Now, read the appropriate number of hex digits for this loc,
1740 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1741 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1745 c
= readchar (timeout
);
1747 c
= readchar (timeout
);
1748 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1751 monitor_error ("monitor_read_memory_single",
1752 "bad response from monitor",
1753 memaddr
, i
, membuf
, c
);
1755 for (i
= 0; i
< len
* 2; i
++)
1761 c
= readchar (timeout
);
1767 monitor_error ("monitor_read_memory_single",
1768 "bad response from monitor",
1769 memaddr
, i
, membuf
, c
);
1775 membuf
[i
] = '\000'; /* terminate the number */
1777 /* If TERM is present, we wait for that to show up. Also, (if TERM is
1778 present), we will send TERM_CMD if that is present. In any case, we collect
1779 all of the output into buf, and then wait for the normal prompt. */
1781 if (current_monitor
->getmem
.term
)
1783 monitor_expect (current_monitor
->getmem
.term
, NULL
, 0); /* get response */
1785 if (current_monitor
->getmem
.term_cmd
)
1787 monitor_printf (current_monitor
->getmem
.term_cmd
);
1788 monitor_expect_prompt (NULL
, 0);
1792 monitor_expect_prompt (NULL
, 0); /* get response */
1795 val
= strtoul (membuf
, &p
, 16);
1797 if (val
== 0 && membuf
== p
)
1798 monitor_error ("monitor_read_memory_single",
1799 "bad value from monitor",
1800 memaddr
, 0, membuf
, 0);
1802 /* supply register stores in target byte order, so swap here */
1804 store_unsigned_integer (myaddr
, len
, val
);
1809 /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
1810 memory at MEMADDR. Returns length moved. Currently, we do no more
1811 than 16 bytes at a time. */
1814 monitor_read_memory (CORE_ADDR memaddr
, char *myaddr
, int len
)
1825 monitor_debug ("Zero length call to monitor_read_memory\n");
1829 monitor_debug ("MON read block ta(%s) ha(%lx) %d\n",
1830 paddr_nz (memaddr
), (long) myaddr
, len
);
1832 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1833 memaddr
= ADDR_BITS_REMOVE (memaddr
);
1835 if (current_monitor
->flags
& MO_GETMEM_READ_SINGLE
)
1836 return monitor_read_memory_single (memaddr
, myaddr
, len
);
1838 len
= min (len
, 16);
1840 /* Some dumpers align the first data with the preceeding 16
1841 byte boundary. Some print blanks and start at the
1842 requested boundary. EXACT_DUMPADDR
1845 dumpaddr
= (current_monitor
->flags
& MO_EXACT_DUMPADDR
)
1846 ? memaddr
: memaddr
& ~0x0f;
1848 /* See if xfer would cross a 16 byte boundary. If so, clip it. */
1849 if (((memaddr
^ (memaddr
+ len
- 1)) & ~0xf) != 0)
1850 len
= ((memaddr
+ len
) & ~0xf) - memaddr
;
1852 /* send the memory examine command */
1854 if (current_monitor
->flags
& MO_GETMEM_NEEDS_RANGE
)
1855 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, memaddr
+ len
);
1856 else if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1857 monitor_printf (current_monitor
->getmem
.cmdb
, dumpaddr
);
1859 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, len
);
1861 /* If TERM is present, we wait for that to show up. Also, (if TERM
1862 is present), we will send TERM_CMD if that is present. In any
1863 case, we collect all of the output into buf, and then wait for
1864 the normal prompt. */
1866 if (current_monitor
->getmem
.term
)
1868 resp_len
= monitor_expect (current_monitor
->getmem
.term
, buf
, sizeof buf
); /* get response */
1871 monitor_error ("monitor_read_memory",
1872 "excessive response from monitor",
1873 memaddr
, resp_len
, buf
, 0);
1875 if (current_monitor
->getmem
.term_cmd
)
1877 SERIAL_WRITE (monitor_desc
, current_monitor
->getmem
.term_cmd
,
1878 strlen (current_monitor
->getmem
.term_cmd
));
1879 monitor_expect_prompt (NULL
, 0);
1883 resp_len
= monitor_expect_prompt (buf
, sizeof buf
); /* get response */
1887 /* If RESP_DELIM is specified, we search for that as a leading
1888 delimiter for the values. Otherwise, we just start searching
1889 from the start of the buf. */
1891 if (current_monitor
->getmem
.resp_delim
)
1894 struct re_registers resp_strings
;
1895 monitor_debug ("MON getmem.resp_delim %s\n", current_monitor
->getmem
.resp_delim
);
1897 memset (&resp_strings
, 0, sizeof (struct re_registers
));
1899 retval
= re_search (&getmem_resp_delim_pattern
, p
, tmp
, 0, tmp
,
1903 monitor_error ("monitor_read_memory",
1904 "bad response from monitor",
1905 memaddr
, resp_len
, buf
, 0);
1907 p
+= resp_strings
.end
[0];
1909 p
= strstr (p
, current_monitor
->getmem
.resp_delim
);
1911 monitor_error ("monitor_read_memory",
1912 "bad response from monitor",
1913 memaddr
, resp_len
, buf
, 0);
1914 p
+= strlen (current_monitor
->getmem
.resp_delim
);
1917 monitor_debug ("MON scanning %d ,%lx '%s'\n", len
, (long) p
, p
);
1918 if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1926 while (!(c
== '\000' || c
== '\n' || c
== '\r') && i
> 0)
1930 if ((dumpaddr
>= memaddr
) && (i
> 0))
1932 val
= fromhex (c
) * 16 + fromhex (*(p
+ 1));
1934 if (monitor_debug_p
|| remote_debug
)
1935 fprintf_unfiltered (gdb_stdlog
, "[%02x]", val
);
1942 ++p
; /* skip a blank or other non hex char */
1946 error ("Failed to read via monitor");
1947 if (monitor_debug_p
|| remote_debug
)
1948 fprintf_unfiltered (gdb_stdlog
, "\n");
1949 return fetched
; /* Return the number of bytes actually read */
1951 monitor_debug ("MON scanning bytes\n");
1953 for (i
= len
; i
> 0; i
--)
1955 /* Skip non-hex chars, but bomb on end of string and newlines */
1962 if (*p
== '\000' || *p
== '\n' || *p
== '\r')
1963 monitor_error ("monitor_read_memory",
1964 "badly terminated response from monitor",
1965 memaddr
, resp_len
, buf
, 0);
1969 val
= strtoul (p
, &p1
, 16);
1971 if (val
== 0 && p
== p1
)
1972 monitor_error ("monitor_read_memory",
1973 "bad value from monitor",
1974 memaddr
, resp_len
, buf
, 0);
1987 /* Transfer LEN bytes between target address MEMADDR and GDB address
1988 MYADDR. Returns 0 for success, errno code for failure. TARGET is
1992 monitor_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
1993 struct mem_attrib
*attrib ATTRIBUTE_UNUSED
,
1994 struct target_ops
*target ATTRIBUTE_UNUSED
)
2000 if (current_monitor
->flags
& MO_HAS_BLOCKWRITES
)
2001 res
= monitor_write_memory_block(memaddr
, myaddr
, len
);
2003 res
= monitor_write_memory(memaddr
, myaddr
, len
);
2007 res
= monitor_read_memory(memaddr
, myaddr
, len
);
2016 return; /* ignore attempts to kill target system */
2019 /* All we actually do is set the PC to the start address of exec_bfd, and start
2020 the program at that point. */
2023 monitor_create_inferior (char *exec_file
, char *args
, char **env
)
2025 if (args
&& (*args
!= '\000'))
2026 error ("Args are not supported by the monitor.");
2029 clear_proceed_status ();
2030 proceed (bfd_get_start_address (exec_bfd
), TARGET_SIGNAL_0
, 0);
2033 /* Clean up when a program exits.
2034 The program actually lives on in the remote processor's RAM, and may be
2035 run again without a download. Don't leave it full of breakpoint
2039 monitor_mourn_inferior (void)
2041 unpush_target (targ_ops
);
2042 generic_mourn_inferior (); /* Do all the proper things now */
2045 /* Tell the monitor to add a breakpoint. */
2048 monitor_insert_breakpoint (CORE_ADDR addr
, char *shadow
)
2054 monitor_debug ("MON inst bkpt %s\n", paddr (addr
));
2055 if (current_monitor
->set_break
== NULL
)
2056 error ("No set_break defined for this monitor");
2058 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
2059 addr
= ADDR_BITS_REMOVE (addr
);
2061 /* Determine appropriate breakpoint size for this address. */
2062 bp
= memory_breakpoint_from_pc (&addr
, &bplen
);
2064 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2066 if (breakaddr
[i
] == 0)
2068 breakaddr
[i
] = addr
;
2069 monitor_read_memory (addr
, shadow
, bplen
);
2070 monitor_printf (current_monitor
->set_break
, addr
);
2071 monitor_expect_prompt (NULL
, 0);
2076 error ("Too many breakpoints (> %d) for monitor.", current_monitor
->num_breakpoints
);
2079 /* Tell the monitor to remove a breakpoint. */
2082 monitor_remove_breakpoint (CORE_ADDR addr
, char *shadow
)
2086 monitor_debug ("MON rmbkpt %s\n", paddr (addr
));
2087 if (current_monitor
->clr_break
== NULL
)
2088 error ("No clr_break defined for this monitor");
2090 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
2091 addr
= ADDR_BITS_REMOVE (addr
);
2093 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2095 if (breakaddr
[i
] == addr
)
2098 /* some monitors remove breakpoints based on the address */
2099 if (current_monitor
->flags
& MO_CLR_BREAK_USES_ADDR
)
2100 monitor_printf (current_monitor
->clr_break
, addr
);
2101 else if (current_monitor
->flags
& MO_CLR_BREAK_1_BASED
)
2102 monitor_printf (current_monitor
->clr_break
, i
+ 1);
2104 monitor_printf (current_monitor
->clr_break
, i
);
2105 monitor_expect_prompt (NULL
, 0);
2109 fprintf_unfiltered (gdb_stderr
,
2110 "Can't find breakpoint associated with 0x%s\n",
2115 /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
2116 an S-record. Return non-zero if the ACK is received properly. */
2119 monitor_wait_srec_ack (void)
2123 if (current_monitor
->flags
& MO_SREC_ACK_PLUS
)
2125 return (readchar (timeout
) == '+');
2127 else if (current_monitor
->flags
& MO_SREC_ACK_ROTATE
)
2129 /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
2130 if ((ch
= readchar (1)) < 0)
2132 if ((ch
= readchar (1)) < 0)
2134 if ((ch
= readchar (1)) < 0)
2136 if ((ch
= readchar (1)) < 0)
2142 /* monitor_load -- download a file. */
2145 monitor_load (char *file
, int from_tty
)
2147 monitor_debug ("MON load\n");
2149 if (current_monitor
->load_routine
)
2150 current_monitor
->load_routine (monitor_desc
, file
, hashmark
);
2152 { /* The default is ascii S-records */
2154 unsigned long load_offset
;
2157 /* enable user to specify address for downloading as 2nd arg to load */
2158 n
= sscanf (file
, "%s 0x%lx", buf
, &load_offset
);
2164 monitor_printf (current_monitor
->load
);
2165 if (current_monitor
->loadresp
)
2166 monitor_expect (current_monitor
->loadresp
, NULL
, 0);
2168 load_srec (monitor_desc
, file
, (bfd_vma
) load_offset
,
2169 32, SREC_ALL
, hashmark
,
2170 current_monitor
->flags
& MO_SREC_ACK
?
2171 monitor_wait_srec_ack
: NULL
);
2173 monitor_expect_prompt (NULL
, 0);
2176 /* Finally, make the PC point at the start address */
2179 write_pc (bfd_get_start_address (exec_bfd
));
2181 inferior_pid
= 0; /* No process now */
2183 /* This is necessary because many things were based on the PC at the time that
2184 we attached to the monitor, which is no longer valid now that we have loaded
2185 new code (and just changed the PC). Another way to do this might be to call
2186 normal_stop, except that the stack may not be valid, and things would get
2187 horribly confused... */
2189 clear_symtab_users ();
2195 monitor_debug ("MON stop\n");
2196 if ((current_monitor
->flags
& MO_SEND_BREAK_ON_STOP
) != 0)
2197 SERIAL_SEND_BREAK (monitor_desc
);
2198 if (current_monitor
->stop
)
2199 monitor_printf_noecho (current_monitor
->stop
);
2202 /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
2203 in OUTPUT until the prompt is seen. FIXME: We read the characters
2204 ourseleves here cause of a nasty echo. */
2207 monitor_rcmd (char *command
,
2208 struct ui_file
*outbuf
)
2214 if (monitor_desc
== NULL
)
2215 error ("monitor target not open.");
2217 p
= current_monitor
->prompt
;
2219 /* Send the command. Note that if no args were supplied, then we're
2220 just sending the monitor a newline, which is sometimes useful. */
2222 monitor_printf ("%s\r", (command
? command
: ""));
2224 resp_len
= monitor_expect_prompt (buf
, sizeof buf
);
2226 fputs_unfiltered (buf
, outbuf
); /* Output the response */
2229 /* Convert hex digit A to a number. */
2235 if (a
>= '0' && a
<= '9')
2237 if (a
>= 'a' && a
<= 'f')
2238 return a
- 'a' + 10;
2239 if (a
>= 'A' && a
<= 'F')
2240 return a
- 'A' + 10;
2242 error ("Reply contains invalid hex digit 0x%x", a
);
2247 monitor_get_dev_name (void)
2252 static struct target_ops monitor_ops
;
2255 init_base_monitor_ops (void)
2257 monitor_ops
.to_shortname
= NULL
;
2258 monitor_ops
.to_longname
= NULL
;
2259 monitor_ops
.to_doc
= NULL
;
2260 monitor_ops
.to_open
= NULL
;
2261 monitor_ops
.to_close
= monitor_close
;
2262 monitor_ops
.to_attach
= NULL
;
2263 monitor_ops
.to_post_attach
= NULL
;
2264 monitor_ops
.to_require_attach
= NULL
;
2265 monitor_ops
.to_detach
= monitor_detach
;
2266 monitor_ops
.to_require_detach
= NULL
;
2267 monitor_ops
.to_resume
= monitor_resume
;
2268 monitor_ops
.to_wait
= monitor_wait
;
2269 monitor_ops
.to_post_wait
= NULL
;
2270 monitor_ops
.to_fetch_registers
= monitor_fetch_registers
;
2271 monitor_ops
.to_store_registers
= monitor_store_registers
;
2272 monitor_ops
.to_prepare_to_store
= monitor_prepare_to_store
;
2273 monitor_ops
.to_xfer_memory
= monitor_xfer_memory
;
2274 monitor_ops
.to_files_info
= monitor_files_info
;
2275 monitor_ops
.to_insert_breakpoint
= monitor_insert_breakpoint
;
2276 monitor_ops
.to_remove_breakpoint
= monitor_remove_breakpoint
;
2277 monitor_ops
.to_terminal_init
= 0;
2278 monitor_ops
.to_terminal_inferior
= 0;
2279 monitor_ops
.to_terminal_ours_for_output
= 0;
2280 monitor_ops
.to_terminal_ours
= 0;
2281 monitor_ops
.to_terminal_info
= 0;
2282 monitor_ops
.to_kill
= monitor_kill
;
2283 monitor_ops
.to_load
= monitor_load
;
2284 monitor_ops
.to_lookup_symbol
= 0;
2285 monitor_ops
.to_create_inferior
= monitor_create_inferior
;
2286 monitor_ops
.to_post_startup_inferior
= NULL
;
2287 monitor_ops
.to_acknowledge_created_inferior
= NULL
;
2288 monitor_ops
.to_clone_and_follow_inferior
= NULL
;
2289 monitor_ops
.to_post_follow_inferior_by_clone
= NULL
;
2290 monitor_ops
.to_insert_fork_catchpoint
= NULL
;
2291 monitor_ops
.to_remove_fork_catchpoint
= NULL
;
2292 monitor_ops
.to_insert_vfork_catchpoint
= NULL
;
2293 monitor_ops
.to_remove_vfork_catchpoint
= NULL
;
2294 monitor_ops
.to_has_forked
= NULL
;
2295 monitor_ops
.to_has_vforked
= NULL
;
2296 monitor_ops
.to_can_follow_vfork_prior_to_exec
= NULL
;
2297 monitor_ops
.to_post_follow_vfork
= NULL
;
2298 monitor_ops
.to_insert_exec_catchpoint
= NULL
;
2299 monitor_ops
.to_remove_exec_catchpoint
= NULL
;
2300 monitor_ops
.to_has_execd
= NULL
;
2301 monitor_ops
.to_reported_exec_events_per_exec_call
= NULL
;
2302 monitor_ops
.to_has_exited
= NULL
;
2303 monitor_ops
.to_mourn_inferior
= monitor_mourn_inferior
;
2304 monitor_ops
.to_can_run
= 0;
2305 monitor_ops
.to_notice_signals
= 0;
2306 monitor_ops
.to_thread_alive
= 0;
2307 monitor_ops
.to_stop
= monitor_stop
;
2308 monitor_ops
.to_rcmd
= monitor_rcmd
;
2309 monitor_ops
.to_pid_to_exec_file
= NULL
;
2310 monitor_ops
.to_core_file_to_sym_file
= NULL
;
2311 monitor_ops
.to_stratum
= process_stratum
;
2312 monitor_ops
.DONT_USE
= 0;
2313 monitor_ops
.to_has_all_memory
= 1;
2314 monitor_ops
.to_has_memory
= 1;
2315 monitor_ops
.to_has_stack
= 1;
2316 monitor_ops
.to_has_registers
= 1;
2317 monitor_ops
.to_has_execution
= 1;
2318 monitor_ops
.to_sections
= 0;
2319 monitor_ops
.to_sections_end
= 0;
2320 monitor_ops
.to_magic
= OPS_MAGIC
;
2321 } /* init_base_monitor_ops */
2323 /* Init the target_ops structure pointed at by OPS */
2326 init_monitor_ops (struct target_ops
*ops
)
2328 if (monitor_ops
.to_magic
!= OPS_MAGIC
)
2329 init_base_monitor_ops ();
2331 memcpy (ops
, &monitor_ops
, sizeof monitor_ops
);
2334 /* Define additional commands that are usually only used by monitors. */
2337 _initialize_remote_monitors (void)
2339 init_base_monitor_ops ();
2340 add_show_from_set (add_set_cmd ("hash", no_class
, var_boolean
,
2342 "Set display of activity while downloading a file.\n\
2343 When enabled, a hashmark \'#\' is displayed.",
2348 (add_set_cmd ("monitor", no_class
, var_zinteger
,
2349 (char *) &monitor_debug_p
,
2350 "Set debugging of remote monitor communication.\n\
2351 When enabled, communication between GDB and the remote monitor\n\
2352 is displayed.", &setdebuglist
),