1 /* Remote debugging interface for boot monitors, for GDB.
2 Copyright 1990-1993, 1995-1997, 1999-2000 Free Software Foundation, Inc.
3 Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
4 Resurrected from the ashes by Stu Grossman.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* This file was derived from various remote-* modules. It is a collection
24 of generic support functions so GDB can talk directly to a ROM based
25 monitor. This saves use from having to hack an exception based handler
26 into existance, and makes for quick porting.
28 This module talks to a debug monitor called 'MONITOR', which
29 We communicate with MONITOR via either a direct serial line, or a TCP
30 (or possibly TELNET) stream to a terminal multiplexor,
31 which in turn talks to the target board. */
33 /* FIXME 32x64: This code assumes that registers and addresses are at
34 most 32 bits long. If they can be larger, you will need to declare
35 values as LONGEST and use %llx or some such to print values when
36 building commands to send to the monitor. Since we don't know of
37 any actual 64-bit targets with ROM monitors that use this code,
38 it's not an issue right now. -sts 4/18/96 */
46 #include "gdb_string.h"
47 #include <sys/types.h>
53 #include "gdb_regex.h"
57 static char *dev_name
;
58 static struct target_ops
*targ_ops
;
60 static void monitor_vsprintf (char *sndbuf
, char *pattern
, va_list args
);
62 static int readchar (int timeout
);
64 static void monitor_fetch_register (int regno
);
65 static void monitor_store_register (int regno
);
67 static void monitor_printable_string (char *newstr
, char *oldstr
, int len
);
68 static void monitor_error (char *function
, char *message
, CORE_ADDR memaddr
, int len
, char *string
, int final_char
);
69 static void monitor_detach (char *args
, int from_tty
);
70 static void monitor_resume (int pid
, int step
, enum target_signal sig
);
71 static void monitor_interrupt (int signo
);
72 static void monitor_interrupt_twice (int signo
);
73 static void monitor_interrupt_query (void);
74 static void monitor_wait_cleanup (void *old_timeout
);
76 static int monitor_wait (int pid
, struct target_waitstatus
*status
);
77 static void monitor_fetch_registers (int regno
);
78 static void monitor_store_registers (int regno
);
79 static void monitor_prepare_to_store (void);
80 static int monitor_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
,
81 int write
, struct target_ops
*target
);
82 static void monitor_files_info (struct target_ops
*ops
);
83 static int monitor_insert_breakpoint (CORE_ADDR addr
, char *shadow
);
84 static int monitor_remove_breakpoint (CORE_ADDR addr
, char *shadow
);
85 static void monitor_kill (void);
86 static void monitor_load (char *file
, int from_tty
);
87 static void monitor_mourn_inferior (void);
88 static void monitor_stop (void);
90 static int monitor_read_memory (CORE_ADDR addr
, char *myaddr
, int len
);
91 static int monitor_write_memory (CORE_ADDR addr
, char *myaddr
, int len
);
92 static int monitor_write_memory_bytes (CORE_ADDR addr
, char *myaddr
, int len
);
93 static int monitor_write_memory_block (CORE_ADDR memaddr
,
94 char *myaddr
, int len
);
95 static int monitor_expect_regexp (struct re_pattern_buffer
*pat
,
96 char *buf
, int buflen
);
97 static void monitor_dump_regs (void);
99 static int from_hex (int a
);
100 static unsigned long get_hex_word (void);
102 static void parse_register_dump (char *, int);
104 static struct monitor_ops
*current_monitor
;
106 static int hashmark
; /* flag set by "set hash" */
108 static int timeout
= 30;
110 static int in_monitor_wait
= 0; /* Non-zero means we are in monitor_wait() */
112 static void (*ofunc
) (); /* Old SIGINT signal handler */
114 static CORE_ADDR
*breakaddr
;
116 /* Descriptor for I/O to remote machine. Initialize it to NULL so
117 that monitor_open knows that we don't have a file open when the
120 static serial_t monitor_desc
= NULL
;
122 /* Pointer to regexp pattern matching data */
124 static struct re_pattern_buffer register_pattern
;
125 static char register_fastmap
[256];
127 static struct re_pattern_buffer getmem_resp_delim_pattern
;
128 static char getmem_resp_delim_fastmap
[256];
130 static int dump_reg_flag
; /* Non-zero means do a dump_registers cmd when
131 monitor_wait wakes up. */
133 static DCACHE
*remote_dcache
;
134 static int first_time
= 0; /* is this the first time we're executing after
135 gaving created the child proccess? */
137 #define TARGET_BUF_SIZE 2048
139 /* Monitor specific debugging information. Typically only useful to
140 the developer of a new monitor interface. */
142 static void monitor_debug (const char *fmt
, ...) ATTR_FORMAT(printf
, 1, 2);
144 static int monitor_debug_p
= 0;
146 /* NOTE: This file alternates between monitor_debug_p and remote_debug
147 when determining if debug information is printed. Perhaphs this
148 could be simplified. */
151 monitor_debug (const char *fmt
, ...)
156 va_start (args
, fmt
);
157 vfprintf_filtered (gdb_stdlog
, fmt
, args
);
163 /* Convert a string into a printable representation, Return # byte in
164 the new string. When LEN is >0 it specifies the size of the
165 string. Otherwize strlen(oldstr) is used. */
168 monitor_printable_string (char *newstr
, char *oldstr
, int len
)
174 len
= strlen (oldstr
);
176 for (i
= 0; i
< len
; i
++)
187 sprintf (newstr
, "\\x%02x", ch
& 0xff);
226 /* Print monitor errors with a string, converting the string to printable
230 monitor_error (char *function
, char *message
,
231 CORE_ADDR memaddr
, int len
, char *string
, int final_char
)
233 int real_len
= (len
== 0 && string
!= (char *) 0) ? strlen (string
) : len
;
234 char *safe_string
= alloca ((real_len
* 4) + 1);
235 monitor_printable_string (safe_string
, string
, real_len
);
238 error ("%s (0x%s): %s: %s%c", function
, paddr_nz (memaddr
), message
, safe_string
, final_char
);
240 error ("%s (0x%s): %s: %s", function
, paddr_nz (memaddr
), message
, safe_string
);
243 /* Convert hex digit A to a number. */
248 if (a
>= '0' && a
<= '9')
250 else if (a
>= 'a' && a
<= 'f')
252 else if (a
>= 'A' && a
<= 'F')
255 error ("Invalid hex digit %d", a
);
258 /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses
260 This function exists to get around the problem that many host platforms
261 don't have a printf that can print 64-bit addresses. The %A format
262 specification is recognized as a special case, and causes the argument
263 to be printed as a 64-bit hexadecimal address.
265 Only format specifiers of the form "[0-9]*[a-z]" are recognized.
266 If it is a '%s' format, the argument is a string; otherwise the
267 argument is assumed to be a long integer.
269 %% is also turned into a single %.
273 monitor_vsprintf (char *sndbuf
, char *pattern
, va_list args
)
283 for (p
= pattern
; *p
; p
++)
287 /* Copy the format specifier to a separate buffer. */
289 for (i
= 1; *p
>= '0' && *p
<= '9' && i
< (int) sizeof (format
) - 2;
292 format
[i
] = fmt
= *p
;
293 format
[i
+ 1] = '\0';
295 /* Fetch the next argument and print it. */
299 strcpy (sndbuf
, "%");
302 arg_addr
= va_arg (args
, CORE_ADDR
);
303 strcpy (sndbuf
, paddr_nz (arg_addr
));
306 arg_string
= va_arg (args
, char *);
307 sprintf (sndbuf
, format
, arg_string
);
310 arg_int
= va_arg (args
, long);
311 sprintf (sndbuf
, format
, arg_int
);
314 sndbuf
+= strlen (sndbuf
);
323 /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo.
324 Works just like printf. */
327 monitor_printf_noecho (char *pattern
,...)
333 va_start (args
, pattern
);
335 monitor_vsprintf (sndbuf
, pattern
, args
);
337 len
= strlen (sndbuf
);
338 if (len
+ 1 > sizeof sndbuf
)
343 char *safe_string
= (char *) alloca ((strlen (sndbuf
) * 4) + 1);
344 monitor_printable_string (safe_string
, sndbuf
, 0);
345 fprintf_unfiltered (gdb_stdlog
, "sent[%s]\n", safe_string
);
348 monitor_write (sndbuf
, len
);
351 /* monitor_printf -- Send data to monitor and check the echo. Works just like
355 monitor_printf (char *pattern
,...)
361 va_start (args
, pattern
);
363 monitor_vsprintf (sndbuf
, pattern
, args
);
365 len
= strlen (sndbuf
);
366 if (len
+ 1 > sizeof sndbuf
)
371 char *safe_string
= (char *) alloca ((len
* 4) + 1);
372 monitor_printable_string (safe_string
, sndbuf
, 0);
373 fprintf_unfiltered (gdb_stdlog
, "sent[%s]\n", safe_string
);
376 monitor_write (sndbuf
, len
);
378 /* We used to expect that the next immediate output was the characters we
379 just output, but sometimes some extra junk appeared before the characters
380 we expected, like an extra prompt, or a portmaster sending telnet negotiations.
381 So, just start searching for what we sent, and skip anything unknown. */
382 monitor_debug ("ExpectEcho\n");
383 monitor_expect (sndbuf
, (char *) 0, 0);
387 /* Write characters to the remote system. */
390 monitor_write (char *buf
, int buflen
)
392 if (SERIAL_WRITE (monitor_desc
, buf
, buflen
))
393 fprintf_unfiltered (gdb_stderr
, "SERIAL_WRITE failed: %s\n",
394 safe_strerror (errno
));
398 /* Read a binary character from the remote system, doing all the fancy
399 timeout stuff, but without interpreting the character in any way,
400 and without printing remote debug information. */
403 monitor_readchar (void)
411 c
= SERIAL_READCHAR (monitor_desc
, timeout
);
414 c
&= 0xff; /* don't lose bit 7 */
421 if (c
== SERIAL_TIMEOUT
)
422 error ("Timeout reading from remote system.");
424 perror_with_name ("remote-monitor");
428 /* Read a character from the remote system, doing all the fancy
432 readchar (int timeout
)
437 last_random
, last_nl
, last_cr
, last_crnl
445 c
= SERIAL_READCHAR (monitor_desc
, timeout
);
450 /* This seems to interfere with proper function of the
452 if (monitor_debug_p
|| remote_debug
)
457 puts_debug ("read -->", buf
, "<--");
462 /* Canonicialize \n\r combinations into one \r */
463 if ((current_monitor
->flags
& MO_HANDLE_NL
) != 0)
465 if ((c
== '\r' && state
== last_nl
)
466 || (c
== '\n' && state
== last_cr
))
487 if (c
== SERIAL_TIMEOUT
)
489 /* I fail to see how detaching here can be useful */
490 if (in_monitor_wait
) /* Watchdog went off */
492 target_mourn_inferior ();
493 error ("GDB serial timeout has expired. Target detached.\n");
497 error ("Timeout reading from remote system.");
499 perror_with_name ("remote-monitor");
502 /* Scan input from the remote system, until STRING is found. If BUF is non-
503 zero, then collect input until we have collected either STRING or BUFLEN-1
504 chars. In either case we terminate BUF with a 0. If input overflows BUF
505 because STRING can't be found, return -1, else return number of chars in BUF
506 (minus the terminating NUL). Note that in the non-overflow case, STRING
507 will be at the end of BUF. */
510 monitor_expect (char *string
, char *buf
, int buflen
)
513 int obuflen
= buflen
;
515 extern struct target_ops
*targ_ops
;
519 char *safe_string
= (char *) alloca ((strlen (string
) * 4) + 1);
520 monitor_printable_string (safe_string
, string
, 0);
521 fprintf_unfiltered (gdb_stdlog
, "MON Expecting '%s'\n", safe_string
);
536 c
= readchar (timeout
);
543 c
= readchar (timeout
);
545 /* Don't expect any ^C sent to be echoed */
547 if (*p
== '\003' || c
== *p
)
557 return obuflen
- buflen
;
563 else if ((c
== '\021' || c
== '\023') &&
564 (STREQ (targ_ops
->to_shortname
, "m32r")
565 || STREQ (targ_ops
->to_shortname
, "mon2000")))
566 { /* m32r monitor emits random DC1/DC3 chars */
571 /* We got a character that doesn't match the string. We need to
572 back up p, but how far? If we're looking for "..howdy" and the
573 monitor sends "...howdy"? There's certainly a match in there,
574 but when we receive the third ".", we won't find it if we just
575 restart the matching at the beginning of the string.
577 This is a Boyer-Moore kind of situation. We want to reset P to
578 the end of the longest prefix of STRING that is a suffix of
579 what we've read so far. In the example above, that would be
580 ".." --- the longest prefix of "..howdy" that is a suffix of
581 "...". This longest prefix could be the empty string, if C
582 is nowhere to be found in STRING.
584 If this longest prefix is not the empty string, it must contain
585 C, so let's search from the end of STRING for instances of C,
586 and see if the portion of STRING before that is a suffix of
587 what we read before C. Actually, we can search backwards from
588 p, since we know no prefix can be longer than that.
590 Note that we can use STRING itself, along with C, as a record
591 of what we've received so far. :) */
594 for (i
= (p
- string
) - 1; i
>= 0; i
--)
597 /* Is this prefix a suffix of what we've read so far?
599 string[0 .. i-1] == string[p - i, p - 1]? */
600 if (! memcmp (string
, p
- i
, i
))
612 /* Search for a regexp. */
615 monitor_expect_regexp (struct re_pattern_buffer
*pat
, char *buf
, int buflen
)
619 monitor_debug ("MON Expecting regexp\n");
624 mybuf
= alloca (TARGET_BUF_SIZE
);
625 buflen
= TARGET_BUF_SIZE
;
633 if (p
- mybuf
>= buflen
)
634 { /* Buffer about to overflow */
636 /* On overflow, we copy the upper half of the buffer to the lower half. Not
637 great, but it usually works... */
639 memcpy (mybuf
, mybuf
+ buflen
/ 2, buflen
/ 2);
640 p
= mybuf
+ buflen
/ 2;
643 *p
++ = readchar (timeout
);
645 retval
= re_search (pat
, mybuf
, p
- mybuf
, 0, p
- mybuf
, NULL
);
651 /* Keep discarding input until we see the MONITOR prompt.
653 The convention for dealing with the prompt is that you
655 o *then* wait for the prompt.
657 Thus the last thing that a procedure does with the serial line will
658 be an monitor_expect_prompt(). Exception: monitor_resume does not
659 wait for the prompt, because the terminal is being handed over to
660 the inferior. However, the next thing which happens after that is
661 a monitor_wait which does wait for the prompt. Note that this
662 includes abnormal exit, e.g. error(). This is necessary to prevent
663 getting into states from which we can't recover. */
666 monitor_expect_prompt (char *buf
, int buflen
)
668 monitor_debug ("MON Expecting prompt\n");
669 return monitor_expect (current_monitor
->prompt
, buf
, buflen
);
672 /* Get N 32-bit words from remote, each preceded by a space, and put
673 them in registers starting at REGNO. */
684 ch
= readchar (timeout
);
685 while (isspace (ch
));
689 for (i
= 7; i
>= 1; i
--)
691 ch
= readchar (timeout
);
694 val
= (val
<< 4) | from_hex (ch
);
702 compile_pattern (char *pattern
, struct re_pattern_buffer
*compiled_pattern
,
708 compiled_pattern
->fastmap
= fastmap
;
710 tmp
= re_set_syntax (RE_SYNTAX_EMACS
);
711 val
= re_compile_pattern (pattern
,
717 error ("compile_pattern: Can't compile pattern string `%s': %s!", pattern
, val
);
720 re_compile_fastmap (compiled_pattern
);
723 /* Open a connection to a remote debugger. NAME is the filename used
724 for communication. */
727 monitor_open (char *args
, struct monitor_ops
*mon_ops
, int from_tty
)
732 if (mon_ops
->magic
!= MONITOR_OPS_MAGIC
)
733 error ("Magic number of monitor_ops struct wrong.");
735 targ_ops
= mon_ops
->target
;
736 name
= targ_ops
->to_shortname
;
739 error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\
740 `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name
, name
);
742 target_preopen (from_tty
);
744 /* Setup pattern for register dump */
746 if (mon_ops
->register_pattern
)
747 compile_pattern (mon_ops
->register_pattern
, ®ister_pattern
,
750 if (mon_ops
->getmem
.resp_delim
)
751 compile_pattern (mon_ops
->getmem
.resp_delim
, &getmem_resp_delim_pattern
,
752 getmem_resp_delim_fastmap
);
754 unpush_target (targ_ops
);
758 dev_name
= strsave (args
);
760 monitor_desc
= SERIAL_OPEN (dev_name
);
763 perror_with_name (dev_name
);
767 if (SERIAL_SETBAUDRATE (monitor_desc
, baud_rate
))
769 SERIAL_CLOSE (monitor_desc
);
770 perror_with_name (dev_name
);
774 SERIAL_RAW (monitor_desc
);
776 SERIAL_FLUSH_INPUT (monitor_desc
);
778 /* some systems only work with 2 stop bits */
780 SERIAL_SETSTOPBITS (monitor_desc
, mon_ops
->stopbits
);
782 current_monitor
= mon_ops
;
784 /* See if we can wake up the monitor. First, try sending a stop sequence,
785 then send the init strings. Last, remove all breakpoints. */
787 if (current_monitor
->stop
)
790 if ((current_monitor
->flags
& MO_NO_ECHO_ON_OPEN
) == 0)
792 monitor_debug ("EXP Open echo\n");
793 monitor_expect_prompt (NULL
, 0);
797 /* wake up the monitor and see if it's alive */
798 for (p
= mon_ops
->init
; *p
!= NULL
; p
++)
800 /* Some of the characters we send may not be echoed,
801 but we hope to get a prompt at the end of it all. */
803 if ((current_monitor
->flags
& MO_NO_ECHO_ON_OPEN
) == 0)
806 monitor_printf_noecho (*p
);
807 monitor_expect_prompt (NULL
, 0);
810 SERIAL_FLUSH_INPUT (monitor_desc
);
812 /* Alloc breakpoints */
813 if (mon_ops
->set_break
!= NULL
)
815 if (mon_ops
->num_breakpoints
== 0)
816 mon_ops
->num_breakpoints
= 8;
818 breakaddr
= (CORE_ADDR
*) xmalloc (mon_ops
->num_breakpoints
* sizeof (CORE_ADDR
));
819 memset (breakaddr
, 0, mon_ops
->num_breakpoints
* sizeof (CORE_ADDR
));
822 /* Remove all breakpoints */
824 if (mon_ops
->clr_all_break
)
826 monitor_printf (mon_ops
->clr_all_break
);
827 monitor_expect_prompt (NULL
, 0);
831 printf_unfiltered ("Remote target %s connected to %s\n", name
, dev_name
);
833 push_target (targ_ops
);
835 inferior_pid
= 42000; /* Make run command think we are busy... */
837 /* Give monitor_wait something to read */
839 monitor_printf (current_monitor
->line_term
);
842 dcache_free (remote_dcache
);
844 if (current_monitor
->flags
& MO_HAS_BLOCKWRITES
)
845 remote_dcache
= dcache_init (monitor_read_memory
,
846 monitor_write_memory_block
);
848 remote_dcache
= dcache_init (monitor_read_memory
, monitor_write_memory
);
853 /* Close out all files and local state before this target loses
857 monitor_close (int quitting
)
860 SERIAL_CLOSE (monitor_desc
);
862 /* Free breakpoint memory */
863 if (breakaddr
!= NULL
)
872 /* Terminate the open connection to the remote debugger. Use this
873 when you want to detach and do something else with your gdb. */
876 monitor_detach (char *args
, int from_tty
)
878 pop_target (); /* calls monitor_close to do the real work */
880 printf_unfiltered ("Ending remote %s debugging\n", target_shortname
);
883 /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
886 monitor_supply_register (int regno
, char *valstr
)
889 unsigned char regbuf
[MAX_REGISTER_RAW_SIZE
];
894 while (p
&& *p
!= '\0')
896 if (*p
== '\r' || *p
== '\n')
907 if (!isxdigit (*p
) && *p
!= 'x')
913 val
+= fromhex (*p
++);
915 monitor_debug ("Supplying Register %d %s\n", regno
, valstr
);
918 error ("monitor_supply_register (%d): bad value from monitor: %s.",
921 /* supply register stores in target byte order, so swap here */
923 store_unsigned_integer (regbuf
, REGISTER_RAW_SIZE (regno
), val
);
925 supply_register (regno
, regbuf
);
930 /* Tell the remote machine to resume. */
933 flush_monitor_dcache (void)
935 dcache_invd (remote_dcache
);
939 monitor_resume (int pid
, int step
, enum target_signal sig
)
941 /* Some monitors require a different command when starting a program */
942 monitor_debug ("MON resume\n");
943 if (current_monitor
->flags
& MO_RUN_FIRST_TIME
&& first_time
== 1)
946 monitor_printf ("run\r");
947 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
951 dcache_invd (remote_dcache
);
953 monitor_printf (current_monitor
->step
);
956 if (current_monitor
->continue_hook
)
957 (*current_monitor
->continue_hook
) ();
959 monitor_printf (current_monitor
->cont
);
960 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
965 /* Parse the output of a register dump command. A monitor specific
966 regexp is used to extract individual register descriptions of the
967 form REG=VAL. Each description is split up into a name and a value
968 string which are passed down to monitor specific code. */
971 parse_register_dump (char *buf
, int len
)
973 monitor_debug ("MON Parsing register dump\n");
976 int regnamelen
, vallen
;
978 /* Element 0 points to start of register name, and element 1
979 points to the start of the register value. */
980 struct re_registers register_strings
;
982 memset (®ister_strings
, 0, sizeof (struct re_registers
));
984 if (re_search (®ister_pattern
, buf
, len
, 0, len
,
985 ®ister_strings
) == -1)
988 regnamelen
= register_strings
.end
[1] - register_strings
.start
[1];
989 regname
= buf
+ register_strings
.start
[1];
990 vallen
= register_strings
.end
[2] - register_strings
.start
[2];
991 val
= buf
+ register_strings
.start
[2];
993 current_monitor
->supply_register (regname
, regnamelen
, val
, vallen
);
995 buf
+= register_strings
.end
[0];
996 len
-= register_strings
.end
[0];
1000 /* Send ^C to target to halt it. Target will respond, and send us a
1004 monitor_interrupt (int signo
)
1006 /* If this doesn't work, try more severe steps. */
1007 signal (signo
, monitor_interrupt_twice
);
1009 if (monitor_debug_p
|| remote_debug
)
1010 fprintf_unfiltered (gdb_stdlog
, "monitor_interrupt called\n");
1015 /* The user typed ^C twice. */
1018 monitor_interrupt_twice (int signo
)
1020 signal (signo
, ofunc
);
1022 monitor_interrupt_query ();
1024 signal (signo
, monitor_interrupt
);
1027 /* Ask the user what to do when an interrupt is received. */
1030 monitor_interrupt_query (void)
1032 target_terminal_ours ();
1034 if (query ("Interrupted while waiting for the program.\n\
1035 Give up (and stop debugging it)? "))
1037 target_mourn_inferior ();
1038 return_to_top_level (RETURN_QUIT
);
1041 target_terminal_inferior ();
1045 monitor_wait_cleanup (void *old_timeout
)
1047 timeout
= *(int *) old_timeout
;
1048 signal (SIGINT
, ofunc
);
1049 in_monitor_wait
= 0;
1055 monitor_wait_filter (char *buf
,
1058 struct target_waitstatus
*status
1064 resp_len
= monitor_expect_prompt (buf
, bufmax
);
1065 *ext_resp_len
= resp_len
;
1068 fprintf_unfiltered (gdb_stderr
, "monitor_wait: excessive response from monitor: %s.", buf
);
1070 while (resp_len
< 0);
1072 /* Print any output characters that were preceded by ^O. */
1073 /* FIXME - This would be great as a user settabgle flag */
1074 if (monitor_debug_p
|| remote_debug
1075 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1079 for (i
= 0; i
< resp_len
- 1; i
++)
1081 putchar_unfiltered (buf
[++i
]);
1087 /* Wait until the remote machine stops, then return, storing status in
1088 status just as `wait' would. */
1091 monitor_wait (int pid
, struct target_waitstatus
*status
)
1093 int old_timeout
= timeout
;
1094 char buf
[TARGET_BUF_SIZE
];
1096 struct cleanup
*old_chain
;
1098 status
->kind
= TARGET_WAITKIND_EXITED
;
1099 status
->value
.integer
= 0;
1101 old_chain
= make_cleanup (monitor_wait_cleanup
, &old_timeout
);
1102 monitor_debug ("MON wait\n");
1105 /* This is somthing other than a maintenance command */
1106 in_monitor_wait
= 1;
1107 timeout
= watchdog
> 0 ? watchdog
: -1;
1109 timeout
= -1; /* Don't time out -- user program is running. */
1112 ofunc
= (void (*)()) signal (SIGINT
, monitor_interrupt
);
1114 if (current_monitor
->wait_filter
)
1115 (*current_monitor
->wait_filter
) (buf
, sizeof (buf
), &resp_len
, status
);
1117 monitor_wait_filter (buf
, sizeof (buf
), &resp_len
, status
);
1119 #if 0 /* Transferred to monitor wait filter */
1122 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1125 fprintf_unfiltered (gdb_stderr
, "monitor_wait: excessive response from monitor: %s.", buf
);
1127 while (resp_len
< 0);
1129 /* Print any output characters that were preceded by ^O. */
1130 /* FIXME - This would be great as a user settabgle flag */
1131 if (monitor_debug_p
|| remote_debug
1132 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1136 for (i
= 0; i
< resp_len
- 1; i
++)
1138 putchar_unfiltered (buf
[++i
]);
1142 signal (SIGINT
, ofunc
);
1144 timeout
= old_timeout
;
1146 if (dump_reg_flag
&& current_monitor
->dump_registers
)
1149 monitor_printf (current_monitor
->dump_registers
);
1150 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1153 if (current_monitor
->register_pattern
)
1154 parse_register_dump (buf
, resp_len
);
1156 monitor_debug ("Wait fetching registers after stop\n");
1157 monitor_dump_regs ();
1160 status
->kind
= TARGET_WAITKIND_STOPPED
;
1161 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1163 discard_cleanups (old_chain
);
1165 in_monitor_wait
= 0;
1167 return inferior_pid
;
1170 /* Fetch register REGNO, or all registers if REGNO is -1. Returns
1174 monitor_fetch_register (int regno
)
1181 regbuf
= alloca (MAX_REGISTER_RAW_SIZE
* 2 + 1);
1182 zerobuf
= alloca (MAX_REGISTER_RAW_SIZE
);
1183 memset (zerobuf
, 0, MAX_REGISTER_RAW_SIZE
);
1185 name
= current_monitor
->regnames
[regno
];
1186 monitor_debug ("MON fetchreg %d '%s'\n", regno
, name
? name
: "(null name)");
1188 if (!name
|| (*name
== '\0'))
1190 monitor_debug ("No register known for %d\n", regno
);
1191 supply_register (regno
, zerobuf
);
1195 /* send the register examine command */
1197 monitor_printf (current_monitor
->getreg
.cmd
, name
);
1199 /* If RESP_DELIM is specified, we search for that as a leading
1200 delimiter for the register value. Otherwise, we just start
1201 searching from the start of the buf. */
1203 if (current_monitor
->getreg
.resp_delim
)
1205 monitor_debug ("EXP getreg.resp_delim\n");
1206 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1207 /* Handle case of first 32 registers listed in pairs. */
1208 if (current_monitor
->flags
& MO_32_REGS_PAIRED
1209 && (regno
& 1) != 0 && regno
< 32)
1211 monitor_debug ("EXP getreg.resp_delim\n");
1212 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1216 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */
1217 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1220 c
= readchar (timeout
);
1222 c
= readchar (timeout
);
1223 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1226 error ("Bad value returned from monitor while fetching register %x.",
1230 /* Read upto the maximum number of hex digits for this register, skipping
1231 spaces, but stop reading if something else is seen. Some monitors
1232 like to drop leading zeros. */
1234 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
) * 2; i
++)
1237 c
= readchar (timeout
);
1239 c
= readchar (timeout
);
1247 regbuf
[i
] = '\000'; /* terminate the number */
1248 monitor_debug ("REGVAL '%s'\n", regbuf
);
1250 /* If TERM is present, we wait for that to show up. Also, (if TERM
1251 is present), we will send TERM_CMD if that is present. In any
1252 case, we collect all of the output into buf, and then wait for
1253 the normal prompt. */
1255 if (current_monitor
->getreg
.term
)
1257 monitor_debug ("EXP getreg.term\n");
1258 monitor_expect (current_monitor
->getreg
.term
, NULL
, 0); /* get response */
1261 if (current_monitor
->getreg
.term_cmd
)
1263 monitor_debug ("EMIT getreg.term.cmd\n");
1264 monitor_printf (current_monitor
->getreg
.term_cmd
);
1266 if (!current_monitor
->getreg
.term
|| /* Already expected or */
1267 current_monitor
->getreg
.term_cmd
) /* ack expected */
1268 monitor_expect_prompt (NULL
, 0); /* get response */
1270 monitor_supply_register (regno
, regbuf
);
1273 /* Sometimes, it takes several commands to dump the registers */
1274 /* This is a primitive for use by variations of monitor interfaces in
1275 case they need to compose the operation.
1278 monitor_dump_reg_block (char *block_cmd
)
1280 char buf
[TARGET_BUF_SIZE
];
1282 monitor_printf (block_cmd
);
1283 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1284 parse_register_dump (buf
, resp_len
);
1289 /* Read the remote registers into the block regs. */
1290 /* Call the specific function if it has been provided */
1293 monitor_dump_regs (void)
1295 char buf
[TARGET_BUF_SIZE
];
1297 if (current_monitor
->dumpregs
)
1298 (*(current_monitor
->dumpregs
)) (); /* call supplied function */
1299 else if (current_monitor
->dump_registers
) /* default version */
1301 monitor_printf (current_monitor
->dump_registers
);
1302 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1303 parse_register_dump (buf
, resp_len
);
1306 abort (); /* Need some way to read registers */
1310 monitor_fetch_registers (int regno
)
1312 monitor_debug ("MON fetchregs\n");
1313 if (current_monitor
->getreg
.cmd
)
1317 monitor_fetch_register (regno
);
1321 for (regno
= 0; regno
< NUM_REGS
; regno
++)
1322 monitor_fetch_register (regno
);
1326 monitor_dump_regs ();
1330 /* Store register REGNO, or all if REGNO == 0. Return errno value. */
1333 monitor_store_register (int regno
)
1338 name
= current_monitor
->regnames
[regno
];
1339 if (!name
|| (*name
== '\0'))
1341 monitor_debug ("MON Cannot store unknown register\n");
1345 val
= read_register (regno
);
1346 monitor_debug ("MON storeg %d %s\n", regno
,
1347 phex (val
, REGISTER_RAW_SIZE (regno
)));
1349 /* send the register deposit command */
1351 if (current_monitor
->flags
& MO_REGISTER_VALUE_FIRST
)
1352 monitor_printf (current_monitor
->setreg
.cmd
, val
, name
);
1353 else if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1354 monitor_printf (current_monitor
->setreg
.cmd
, name
);
1356 monitor_printf (current_monitor
->setreg
.cmd
, name
, val
);
1358 if (current_monitor
->setreg
.term
)
1360 monitor_debug ("EXP setreg.term\n");
1361 monitor_expect (current_monitor
->setreg
.term
, NULL
, 0);
1362 if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1363 monitor_printf ("%s\r", paddr_nz (val
));
1364 monitor_expect_prompt (NULL
, 0);
1367 monitor_expect_prompt (NULL
, 0);
1368 if (current_monitor
->setreg
.term_cmd
) /* Mode exit required */
1370 monitor_debug ("EXP setreg_termcmd\n");
1371 monitor_printf ("%s", current_monitor
->setreg
.term_cmd
);
1372 monitor_expect_prompt (NULL
, 0);
1374 } /* monitor_store_register */
1376 /* Store the remote registers. */
1379 monitor_store_registers (int regno
)
1383 monitor_store_register (regno
);
1387 for (regno
= 0; regno
< NUM_REGS
; regno
++)
1388 monitor_store_register (regno
);
1391 /* Get ready to modify the registers array. On machines which store
1392 individual registers, this doesn't need to do anything. On machines
1393 which store all the registers in one fell swoop, this makes sure
1394 that registers contains all the registers from the program being
1398 monitor_prepare_to_store (void)
1400 /* Do nothing, since we can store individual regs */
1404 monitor_files_info (struct target_ops
*ops
)
1406 printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name
, baud_rate
);
1410 monitor_write_memory (CORE_ADDR memaddr
, char *myaddr
, int len
)
1412 unsigned int val
, hostval
;
1416 monitor_debug ("MON write %d %s\n", len
, paddr (memaddr
));
1418 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1419 memaddr
= ADDR_BITS_REMOVE (memaddr
);
1421 /* Use memory fill command for leading 0 bytes. */
1423 if (current_monitor
->fill
)
1425 for (i
= 0; i
< len
; i
++)
1429 if (i
> 4) /* More than 4 zeros is worth doing */
1431 monitor_debug ("MON FILL %d\n", i
);
1432 if (current_monitor
->flags
& MO_FILL_USES_ADDR
)
1433 monitor_printf (current_monitor
->fill
, memaddr
, (memaddr
+ i
) - 1, 0);
1435 monitor_printf (current_monitor
->fill
, memaddr
, i
, 0);
1437 monitor_expect_prompt (NULL
, 0);
1444 /* Can't actually use long longs if VAL is an int (nice idea, though). */
1445 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->setmem
.cmdll
)
1448 cmd
= current_monitor
->setmem
.cmdll
;
1452 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->setmem
.cmdl
)
1455 cmd
= current_monitor
->setmem
.cmdl
;
1457 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->setmem
.cmdw
)
1460 cmd
= current_monitor
->setmem
.cmdw
;
1465 cmd
= current_monitor
->setmem
.cmdb
;
1468 val
= extract_unsigned_integer (myaddr
, len
);
1472 hostval
= *(unsigned int *) myaddr
;
1473 monitor_debug ("Hostval(%08x) val(%08x)\n", hostval
, val
);
1477 if (current_monitor
->flags
& MO_NO_ECHO_ON_SETMEM
)
1478 monitor_printf_noecho (cmd
, memaddr
, val
);
1479 else if (current_monitor
->flags
& MO_SETMEM_INTERACTIVE
)
1482 monitor_printf_noecho (cmd
, memaddr
);
1484 if (current_monitor
->setmem
.term
)
1486 monitor_debug ("EXP setmem.term");
1487 monitor_expect (current_monitor
->setmem
.term
, NULL
, 0);
1488 monitor_printf ("%x\r", val
);
1490 if (current_monitor
->setmem
.term_cmd
)
1491 { /* Emit this to get out of the memory editing state */
1492 monitor_printf ("%s", current_monitor
->setmem
.term_cmd
);
1493 /* Drop through to expecting a prompt */
1497 monitor_printf (cmd
, memaddr
, val
);
1499 monitor_expect_prompt (NULL
, 0);
1506 monitor_write_even_block (CORE_ADDR memaddr
, char *myaddr
, int len
)
1510 /* Enter the sub mode */
1511 monitor_printf (current_monitor
->setmem
.cmdl
, memaddr
);
1512 monitor_expect_prompt (NULL
, 0);
1516 val
= extract_unsigned_integer (myaddr
, 4); /* REALLY */
1517 monitor_printf ("%x\r", val
);
1521 monitor_debug (" @ %s\n", paddr (memaddr
));
1522 /* If we wanted to, here we could validate the address */
1523 monitor_expect_prompt (NULL
, 0);
1525 /* Now exit the sub mode */
1526 monitor_printf (current_monitor
->getreg
.term_cmd
);
1527 monitor_expect_prompt (NULL
, 0);
1533 monitor_write_memory_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
1539 /* Enter the sub mode */
1540 monitor_printf (current_monitor
->setmem
.cmdb
, memaddr
);
1541 monitor_expect_prompt (NULL
, 0);
1545 monitor_printf ("%x\r", val
);
1549 /* If we wanted to, here we could validate the address */
1550 monitor_expect_prompt (NULL
, 0);
1553 /* Now exit the sub mode */
1554 monitor_printf (current_monitor
->getreg
.term_cmd
);
1555 monitor_expect_prompt (NULL
, 0);
1561 longlongendswap (unsigned char *a
)
1570 *(a
+ i
) = *(a
+ j
);
1575 /* Format 32 chars of long long value, advance the pointer */
1576 static char *hexlate
= "0123456789abcdef";
1578 longlong_hexchars (unsigned long long value
,
1588 static unsigned char disbuf
[8]; /* disassembly buffer */
1589 unsigned char *scan
, *limit
; /* loop controls */
1590 unsigned char c
, nib
;
1595 unsigned long long *dp
;
1596 dp
= (unsigned long long *) scan
;
1599 longlongendswap (disbuf
); /* FIXME: ONly on big endian hosts */
1600 while (scan
< limit
)
1602 c
= *scan
++; /* a byte of our long long value */
1608 leadzero
= 0; /* henceforth we print even zeroes */
1610 nib
= c
>> 4; /* high nibble bits */
1611 *outbuff
++ = hexlate
[nib
];
1612 nib
= c
& 0x0f; /* low nibble bits */
1613 *outbuff
++ = hexlate
[nib
];
1617 } /* longlong_hexchars */
1621 /* I am only going to call this when writing virtual byte streams.
1622 Which possably entails endian conversions
1625 monitor_write_memory_longlongs (CORE_ADDR memaddr
, char *myaddr
, int len
)
1627 static char hexstage
[20]; /* At least 16 digits required, plus null */
1632 llptr
= (unsigned long long *) myaddr
;
1635 monitor_printf (current_monitor
->setmem
.cmdll
, memaddr
);
1636 monitor_expect_prompt (NULL
, 0);
1640 endstring
= longlong_hexchars (*llptr
, hexstage
);
1641 *endstring
= '\0'; /* NUll terminate for printf */
1642 monitor_printf ("%s\r", hexstage
);
1646 /* If we wanted to, here we could validate the address */
1647 monitor_expect_prompt (NULL
, 0);
1650 /* Now exit the sub mode */
1651 monitor_printf (current_monitor
->getreg
.term_cmd
);
1652 monitor_expect_prompt (NULL
, 0);
1658 /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
1659 /* This is for the large blocks of memory which may occur in downloading.
1660 And for monitors which use interactive entry,
1661 And for monitors which do not have other downloading methods.
1662 Without this, we will end up calling monitor_write_memory many times
1663 and do the entry and exit of the sub mode many times
1664 This currently assumes...
1665 MO_SETMEM_INTERACTIVE
1666 ! MO_NO_ECHO_ON_SETMEM
1667 To use this, the you have to patch the monitor_cmds block with
1668 this function. Otherwise, its not tuned up for use by all
1673 monitor_write_memory_block (CORE_ADDR memaddr
, char *myaddr
, int len
)
1677 /* FIXME: This would be a good place to put the zero test */
1679 if ((len
> 8) && (((len
& 0x07)) == 0) && current_monitor
->setmem
.cmdll
)
1681 return monitor_write_memory_longlongs (memaddr
, myaddr
, len
);
1688 written
= monitor_write_even_block (memaddr
, myaddr
, len
);
1689 /* Adjust calling parameters by written amount */
1695 written
= monitor_write_memory_bytes (memaddr
, myaddr
, len
);
1699 /* This is an alternate form of monitor_read_memory which is used for monitors
1700 which can only read a single byte/word/etc. at a time. */
1703 monitor_read_memory_single (CORE_ADDR memaddr
, char *myaddr
, int len
)
1706 char membuf
[sizeof (int) * 2 + 1];
1711 monitor_debug ("MON read single\n");
1713 /* Can't actually use long longs (nice idea, though). In fact, the
1714 call to strtoul below will fail if it tries to convert a value
1715 that's too big to fit in a long. */
1716 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->getmem
.cmdll
)
1719 cmd
= current_monitor
->getmem
.cmdll
;
1723 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->getmem
.cmdl
)
1726 cmd
= current_monitor
->getmem
.cmdl
;
1728 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->getmem
.cmdw
)
1731 cmd
= current_monitor
->getmem
.cmdw
;
1736 cmd
= current_monitor
->getmem
.cmdb
;
1739 /* Send the examine command. */
1741 monitor_printf (cmd
, memaddr
);
1743 /* If RESP_DELIM is specified, we search for that as a leading
1744 delimiter for the memory value. Otherwise, we just start
1745 searching from the start of the buf. */
1747 if (current_monitor
->getmem
.resp_delim
)
1749 monitor_debug ("EXP getmem.resp_delim\n");
1750 monitor_expect_regexp (&getmem_resp_delim_pattern
, NULL
, 0);
1753 /* Now, read the appropriate number of hex digits for this loc,
1756 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1757 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1761 c
= readchar (timeout
);
1763 c
= readchar (timeout
);
1764 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1767 monitor_error ("monitor_read_memory_single",
1768 "bad response from monitor",
1769 memaddr
, i
, membuf
, c
);
1771 for (i
= 0; i
< len
* 2; i
++)
1777 c
= readchar (timeout
);
1783 monitor_error ("monitor_read_memory_single",
1784 "bad response from monitor",
1785 memaddr
, i
, membuf
, c
);
1791 membuf
[i
] = '\000'; /* terminate the number */
1793 /* If TERM is present, we wait for that to show up. Also, (if TERM is
1794 present), we will send TERM_CMD if that is present. In any case, we collect
1795 all of the output into buf, and then wait for the normal prompt. */
1797 if (current_monitor
->getmem
.term
)
1799 monitor_expect (current_monitor
->getmem
.term
, NULL
, 0); /* get response */
1801 if (current_monitor
->getmem
.term_cmd
)
1803 monitor_printf (current_monitor
->getmem
.term_cmd
);
1804 monitor_expect_prompt (NULL
, 0);
1808 monitor_expect_prompt (NULL
, 0); /* get response */
1811 val
= strtoul (membuf
, &p
, 16);
1813 if (val
== 0 && membuf
== p
)
1814 monitor_error ("monitor_read_memory_single",
1815 "bad value from monitor",
1816 memaddr
, 0, membuf
, 0);
1818 /* supply register stores in target byte order, so swap here */
1820 store_unsigned_integer (myaddr
, len
, val
);
1825 /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
1826 memory at MEMADDR. Returns length moved. Currently, we do no more
1827 than 16 bytes at a time. */
1830 monitor_read_memory (CORE_ADDR memaddr
, char *myaddr
, int len
)
1841 monitor_debug ("Zero length call to monitor_read_memory\n");
1845 monitor_debug ("MON read block ta(%s) ha(%lx) %d\n",
1846 paddr_nz (memaddr
), (long) myaddr
, len
);
1848 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1849 memaddr
= ADDR_BITS_REMOVE (memaddr
);
1851 if (current_monitor
->flags
& MO_GETMEM_READ_SINGLE
)
1852 return monitor_read_memory_single (memaddr
, myaddr
, len
);
1854 len
= min (len
, 16);
1856 /* Some dumpers align the first data with the preceeding 16
1857 byte boundary. Some print blanks and start at the
1858 requested boundary. EXACT_DUMPADDR
1861 dumpaddr
= (current_monitor
->flags
& MO_EXACT_DUMPADDR
)
1862 ? memaddr
: memaddr
& ~0x0f;
1864 /* See if xfer would cross a 16 byte boundary. If so, clip it. */
1865 if (((memaddr
^ (memaddr
+ len
- 1)) & ~0xf) != 0)
1866 len
= ((memaddr
+ len
) & ~0xf) - memaddr
;
1868 /* send the memory examine command */
1870 if (current_monitor
->flags
& MO_GETMEM_NEEDS_RANGE
)
1871 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, memaddr
+ len
);
1872 else if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1873 monitor_printf (current_monitor
->getmem
.cmdb
, dumpaddr
);
1875 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, len
);
1877 /* If TERM is present, we wait for that to show up. Also, (if TERM
1878 is present), we will send TERM_CMD if that is present. In any
1879 case, we collect all of the output into buf, and then wait for
1880 the normal prompt. */
1882 if (current_monitor
->getmem
.term
)
1884 resp_len
= monitor_expect (current_monitor
->getmem
.term
, buf
, sizeof buf
); /* get response */
1887 monitor_error ("monitor_read_memory",
1888 "excessive response from monitor",
1889 memaddr
, resp_len
, buf
, 0);
1891 if (current_monitor
->getmem
.term_cmd
)
1893 SERIAL_WRITE (monitor_desc
, current_monitor
->getmem
.term_cmd
,
1894 strlen (current_monitor
->getmem
.term_cmd
));
1895 monitor_expect_prompt (NULL
, 0);
1899 resp_len
= monitor_expect_prompt (buf
, sizeof buf
); /* get response */
1903 /* If RESP_DELIM is specified, we search for that as a leading
1904 delimiter for the values. Otherwise, we just start searching
1905 from the start of the buf. */
1907 if (current_monitor
->getmem
.resp_delim
)
1910 struct re_registers resp_strings
;
1911 monitor_debug ("MON getmem.resp_delim %s\n", current_monitor
->getmem
.resp_delim
);
1913 memset (&resp_strings
, 0, sizeof (struct re_registers
));
1915 retval
= re_search (&getmem_resp_delim_pattern
, p
, tmp
, 0, tmp
,
1919 monitor_error ("monitor_read_memory",
1920 "bad response from monitor",
1921 memaddr
, resp_len
, buf
, 0);
1923 p
+= resp_strings
.end
[0];
1925 p
= strstr (p
, current_monitor
->getmem
.resp_delim
);
1927 monitor_error ("monitor_read_memory",
1928 "bad response from monitor",
1929 memaddr
, resp_len
, buf
, 0);
1930 p
+= strlen (current_monitor
->getmem
.resp_delim
);
1933 monitor_debug ("MON scanning %d ,%lx '%s'\n", len
, (long) p
, p
);
1934 if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1942 while (!(c
== '\000' || c
== '\n' || c
== '\r') && i
> 0)
1946 if ((dumpaddr
>= memaddr
) && (i
> 0))
1948 val
= fromhex (c
) * 16 + fromhex (*(p
+ 1));
1950 if (monitor_debug_p
|| remote_debug
)
1951 fprintf_unfiltered (gdb_stdlog
, "[%02x]", val
);
1958 ++p
; /* skip a blank or other non hex char */
1962 error ("Failed to read via monitor");
1963 if (monitor_debug_p
|| remote_debug
)
1964 fprintf_unfiltered (gdb_stdlog
, "\n");
1965 return fetched
; /* Return the number of bytes actually read */
1967 monitor_debug ("MON scanning bytes\n");
1969 for (i
= len
; i
> 0; i
--)
1971 /* Skip non-hex chars, but bomb on end of string and newlines */
1978 if (*p
== '\000' || *p
== '\n' || *p
== '\r')
1979 monitor_error ("monitor_read_memory",
1980 "badly terminated response from monitor",
1981 memaddr
, resp_len
, buf
, 0);
1985 val
= strtoul (p
, &p1
, 16);
1987 if (val
== 0 && p
== p1
)
1988 monitor_error ("monitor_read_memory",
1989 "bad value from monitor",
1990 memaddr
, resp_len
, buf
, 0);
2004 monitor_xfer_memory (memaddr
, myaddr
, len
, write
, target
)
2009 struct target_ops
*target
; /* ignored */
2011 return dcache_xfer_memory (remote_dcache
, memaddr
, myaddr
, len
, write
);
2017 return; /* ignore attempts to kill target system */
2020 /* All we actually do is set the PC to the start address of exec_bfd, and start
2021 the program at that point. */
2024 monitor_create_inferior (char *exec_file
, char *args
, char **env
)
2026 if (args
&& (*args
!= '\000'))
2027 error ("Args are not supported by the monitor.");
2030 clear_proceed_status ();
2031 proceed (bfd_get_start_address (exec_bfd
), TARGET_SIGNAL_0
, 0);
2034 /* Clean up when a program exits.
2035 The program actually lives on in the remote processor's RAM, and may be
2036 run again without a download. Don't leave it full of breakpoint
2040 monitor_mourn_inferior (void)
2042 unpush_target (targ_ops
);
2043 generic_mourn_inferior (); /* Do all the proper things now */
2046 /* Tell the monitor to add a breakpoint. */
2049 monitor_insert_breakpoint (CORE_ADDR addr
, char *shadow
)
2055 monitor_debug ("MON inst bkpt %s\n", paddr (addr
));
2056 if (current_monitor
->set_break
== NULL
)
2057 error ("No set_break defined for this monitor");
2059 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
2060 addr
= ADDR_BITS_REMOVE (addr
);
2062 /* Determine appropriate breakpoint size for this address. */
2063 bp
= memory_breakpoint_from_pc (&addr
, &bplen
);
2065 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2067 if (breakaddr
[i
] == 0)
2069 breakaddr
[i
] = addr
;
2070 monitor_read_memory (addr
, shadow
, bplen
);
2071 monitor_printf (current_monitor
->set_break
, addr
);
2072 monitor_expect_prompt (NULL
, 0);
2077 error ("Too many breakpoints (> %d) for monitor.", current_monitor
->num_breakpoints
);
2080 /* Tell the monitor to remove a breakpoint. */
2083 monitor_remove_breakpoint (CORE_ADDR addr
, char *shadow
)
2087 monitor_debug ("MON rmbkpt %s\n", paddr (addr
));
2088 if (current_monitor
->clr_break
== NULL
)
2089 error ("No clr_break defined for this monitor");
2091 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
2092 addr
= ADDR_BITS_REMOVE (addr
);
2094 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2096 if (breakaddr
[i
] == addr
)
2099 /* some monitors remove breakpoints based on the address */
2100 if (current_monitor
->flags
& MO_CLR_BREAK_USES_ADDR
)
2101 monitor_printf (current_monitor
->clr_break
, addr
);
2102 else if (current_monitor
->flags
& MO_CLR_BREAK_1_BASED
)
2103 monitor_printf (current_monitor
->clr_break
, i
+ 1);
2105 monitor_printf (current_monitor
->clr_break
, i
);
2106 monitor_expect_prompt (NULL
, 0);
2110 fprintf_unfiltered (gdb_stderr
,
2111 "Can't find breakpoint associated with 0x%s\n",
2116 /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
2117 an S-record. Return non-zero if the ACK is received properly. */
2120 monitor_wait_srec_ack (void)
2124 if (current_monitor
->flags
& MO_SREC_ACK_PLUS
)
2126 return (readchar (timeout
) == '+');
2128 else if (current_monitor
->flags
& MO_SREC_ACK_ROTATE
)
2130 /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
2131 if ((ch
= readchar (1)) < 0)
2133 if ((ch
= readchar (1)) < 0)
2135 if ((ch
= readchar (1)) < 0)
2137 if ((ch
= readchar (1)) < 0)
2143 /* monitor_load -- download a file. */
2146 monitor_load (char *file
, int from_tty
)
2148 dcache_invd (remote_dcache
);
2149 monitor_debug ("MON load\n");
2151 if (current_monitor
->load_routine
)
2152 current_monitor
->load_routine (monitor_desc
, file
, hashmark
);
2154 { /* The default is ascii S-records */
2156 unsigned long load_offset
;
2159 /* enable user to specify address for downloading as 2nd arg to load */
2160 n
= sscanf (file
, "%s 0x%lx", buf
, &load_offset
);
2166 monitor_printf (current_monitor
->load
);
2167 if (current_monitor
->loadresp
)
2168 monitor_expect (current_monitor
->loadresp
, NULL
, 0);
2170 load_srec (monitor_desc
, file
, (bfd_vma
) load_offset
,
2171 32, SREC_ALL
, hashmark
,
2172 current_monitor
->flags
& MO_SREC_ACK
?
2173 monitor_wait_srec_ack
: NULL
);
2175 monitor_expect_prompt (NULL
, 0);
2178 /* Finally, make the PC point at the start address */
2181 write_pc (bfd_get_start_address (exec_bfd
));
2183 inferior_pid
= 0; /* No process now */
2185 /* This is necessary because many things were based on the PC at the time that
2186 we attached to the monitor, which is no longer valid now that we have loaded
2187 new code (and just changed the PC). Another way to do this might be to call
2188 normal_stop, except that the stack may not be valid, and things would get
2189 horribly confused... */
2191 clear_symtab_users ();
2197 monitor_debug ("MON stop\n");
2198 if ((current_monitor
->flags
& MO_SEND_BREAK_ON_STOP
) != 0)
2199 SERIAL_SEND_BREAK (monitor_desc
);
2200 if (current_monitor
->stop
)
2201 monitor_printf_noecho (current_monitor
->stop
);
2204 /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
2205 in OUTPUT until the prompt is seen. FIXME: We read the characters
2206 ourseleves here cause of a nasty echo. */
2209 monitor_rcmd (char *command
,
2210 struct ui_file
*outbuf
)
2216 if (monitor_desc
== NULL
)
2217 error ("monitor target not open.");
2219 p
= current_monitor
->prompt
;
2221 /* Send the command. Note that if no args were supplied, then we're
2222 just sending the monitor a newline, which is sometimes useful. */
2224 monitor_printf ("%s\r", (command
? command
: ""));
2226 resp_len
= monitor_expect_prompt (buf
, sizeof buf
);
2228 fputs_unfiltered (buf
, outbuf
); /* Output the response */
2231 /* Convert hex digit A to a number. */
2237 if (a
>= '0' && a
<= '9')
2239 if (a
>= 'a' && a
<= 'f')
2240 return a
- 'a' + 10;
2241 if (a
>= 'A' && a
<= 'F')
2242 return a
- 'A' + 10;
2244 error ("Reply contains invalid hex digit 0x%x", a
);
2249 monitor_get_dev_name (void)
2254 static struct target_ops monitor_ops
;
2257 init_base_monitor_ops (void)
2259 monitor_ops
.to_shortname
= NULL
;
2260 monitor_ops
.to_longname
= NULL
;
2261 monitor_ops
.to_doc
= NULL
;
2262 monitor_ops
.to_open
= NULL
;
2263 monitor_ops
.to_close
= monitor_close
;
2264 monitor_ops
.to_attach
= NULL
;
2265 monitor_ops
.to_post_attach
= NULL
;
2266 monitor_ops
.to_require_attach
= NULL
;
2267 monitor_ops
.to_detach
= monitor_detach
;
2268 monitor_ops
.to_require_detach
= NULL
;
2269 monitor_ops
.to_resume
= monitor_resume
;
2270 monitor_ops
.to_wait
= monitor_wait
;
2271 monitor_ops
.to_post_wait
= NULL
;
2272 monitor_ops
.to_fetch_registers
= monitor_fetch_registers
;
2273 monitor_ops
.to_store_registers
= monitor_store_registers
;
2274 monitor_ops
.to_prepare_to_store
= monitor_prepare_to_store
;
2275 monitor_ops
.to_xfer_memory
= monitor_xfer_memory
;
2276 monitor_ops
.to_files_info
= monitor_files_info
;
2277 monitor_ops
.to_insert_breakpoint
= monitor_insert_breakpoint
;
2278 monitor_ops
.to_remove_breakpoint
= monitor_remove_breakpoint
;
2279 monitor_ops
.to_terminal_init
= 0;
2280 monitor_ops
.to_terminal_inferior
= 0;
2281 monitor_ops
.to_terminal_ours_for_output
= 0;
2282 monitor_ops
.to_terminal_ours
= 0;
2283 monitor_ops
.to_terminal_info
= 0;
2284 monitor_ops
.to_kill
= monitor_kill
;
2285 monitor_ops
.to_load
= monitor_load
;
2286 monitor_ops
.to_lookup_symbol
= 0;
2287 monitor_ops
.to_create_inferior
= monitor_create_inferior
;
2288 monitor_ops
.to_post_startup_inferior
= NULL
;
2289 monitor_ops
.to_acknowledge_created_inferior
= NULL
;
2290 monitor_ops
.to_clone_and_follow_inferior
= NULL
;
2291 monitor_ops
.to_post_follow_inferior_by_clone
= NULL
;
2292 monitor_ops
.to_insert_fork_catchpoint
= NULL
;
2293 monitor_ops
.to_remove_fork_catchpoint
= NULL
;
2294 monitor_ops
.to_insert_vfork_catchpoint
= NULL
;
2295 monitor_ops
.to_remove_vfork_catchpoint
= NULL
;
2296 monitor_ops
.to_has_forked
= NULL
;
2297 monitor_ops
.to_has_vforked
= NULL
;
2298 monitor_ops
.to_can_follow_vfork_prior_to_exec
= NULL
;
2299 monitor_ops
.to_post_follow_vfork
= NULL
;
2300 monitor_ops
.to_insert_exec_catchpoint
= NULL
;
2301 monitor_ops
.to_remove_exec_catchpoint
= NULL
;
2302 monitor_ops
.to_has_execd
= NULL
;
2303 monitor_ops
.to_reported_exec_events_per_exec_call
= NULL
;
2304 monitor_ops
.to_has_exited
= NULL
;
2305 monitor_ops
.to_mourn_inferior
= monitor_mourn_inferior
;
2306 monitor_ops
.to_can_run
= 0;
2307 monitor_ops
.to_notice_signals
= 0;
2308 monitor_ops
.to_thread_alive
= 0;
2309 monitor_ops
.to_stop
= monitor_stop
;
2310 monitor_ops
.to_rcmd
= monitor_rcmd
;
2311 monitor_ops
.to_pid_to_exec_file
= NULL
;
2312 monitor_ops
.to_core_file_to_sym_file
= NULL
;
2313 monitor_ops
.to_stratum
= process_stratum
;
2314 monitor_ops
.DONT_USE
= 0;
2315 monitor_ops
.to_has_all_memory
= 1;
2316 monitor_ops
.to_has_memory
= 1;
2317 monitor_ops
.to_has_stack
= 1;
2318 monitor_ops
.to_has_registers
= 1;
2319 monitor_ops
.to_has_execution
= 1;
2320 monitor_ops
.to_sections
= 0;
2321 monitor_ops
.to_sections_end
= 0;
2322 monitor_ops
.to_magic
= OPS_MAGIC
;
2323 } /* init_base_monitor_ops */
2325 /* Init the target_ops structure pointed at by OPS */
2328 init_monitor_ops (struct target_ops
*ops
)
2330 if (monitor_ops
.to_magic
!= OPS_MAGIC
)
2331 init_base_monitor_ops ();
2333 memcpy (ops
, &monitor_ops
, sizeof monitor_ops
);
2336 /* Define additional commands that are usually only used by monitors. */
2339 _initialize_remote_monitors (void)
2341 init_base_monitor_ops ();
2342 add_show_from_set (add_set_cmd ("hash", no_class
, var_boolean
,
2344 "Set display of activity while downloading a file.\n\
2345 When enabled, a hashmark \'#\' is displayed.",
2350 (add_set_cmd ("monitor", no_class
, var_zinteger
,
2351 (char *) &monitor_debug_p
,
2352 "Set debugging of remote monitor communication.\n\
2353 When enabled, communication between GDB and the remote monitor\n\
2354 is displayed.", &setdebuglist
),