1 /* Remote target communications for serial-line targets in custom GDB protocol
2 Copyright 1988, 1991, 1992, 1993 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* Remote communication protocol.
22 A debug packet whose contents are <data>
23 is encapsulated for transmission in the form:
25 $ <data> # CSUM1 CSUM2
27 <data> must be ASCII alphanumeric and cannot include characters
30 CSUM1 and CSUM2 are ascii hex representation of an 8-bit
31 checksum of <data>, the most significant nibble is sent first.
32 the hex digits 0-9,a-f are used.
34 Receiver responds with:
36 + - if CSUM is correct and ready for next packet
37 - - if CSUM is incorrect
40 All values are encoded in ascii hex digits.
45 reply XX....X Each byte of register data
46 is described by two hex digits.
47 Registers are in the internal order
48 for GDB, and the bytes in a register
49 are in the same order the machine uses.
52 write regs GXX..XX Each byte of register data
53 is described by two hex digits.
57 read mem mAA..AA,LLLL AA..AA is address, LLLL is length.
58 reply XX..XX XX..XX is mem contents
59 Can be fewer bytes than requested
60 if able to read only part of the data.
63 write mem MAA..AA,LLLL:XX..XX
65 LLLL is number of bytes,
68 ENN for an error (this includes the case
69 where only part of the data was
72 cont cAA..AA AA..AA is address to resume
74 resume at same address.
76 step sAA..AA AA..AA is address to resume
78 resume at same address.
80 last signal ? Reply the current reason for stopping.
81 This is the same reply as is generated
82 for step or cont : SAA where AA is the
85 There is no immediate reply to step or cont.
86 The reply comes when the machine stops.
87 It is SAA AA is the "signal number"
89 or... TAAn...:r...;n:r...;n...:r...;
91 n... = register number
92 r... = register contents
93 or... WAA The process extited, and AA is
94 the exit status. This is only
95 applicable for certains sorts of
97 or... NAATT;DD;BB Relocate the object file.
102 This is used by the NLM stub,
103 which is why it only has three
104 addresses rather than one per
105 section: the NLM stub always
106 sees only three sections, even
107 though gdb may see more.
111 toggle debug d toggle debug flag (see 386 & 68k stubs)
112 reset r reset -- see sparc stub.
113 reserved <other> On other requests, the stub should
114 ignore the request and send an empty
115 response ($#<checksum>). This way
116 we can extend the protocol and GDB
117 can tell whether the stub it is
118 talking to uses the old or the new.
125 #include "inferior.h"
130 #include "terminal.h"
132 #include "objfiles.h"
133 #include "gdb-stabs.h"
136 #include "remote-utils.h"
138 #if !defined(DONT_USE_REMOTE)
140 #include <sys/types.h>
146 /* Prototypes for local functions */
149 remote_write_bytes
PARAMS ((CORE_ADDR memaddr
, unsigned char *myaddr
, int len
));
152 remote_read_bytes
PARAMS ((CORE_ADDR memaddr
, unsigned char *myaddr
, int len
));
155 remote_files_info
PARAMS ((struct target_ops
*ignore
));
158 remote_xfer_memory
PARAMS ((CORE_ADDR memaddr
, char *myaddr
, int len
,
159 int should_write
, struct target_ops
*target
));
162 remote_prepare_to_store
PARAMS ((void));
165 remote_fetch_registers
PARAMS ((int regno
));
168 remote_resume
PARAMS ((int pid
, int step
, int siggnal
));
171 remote_start_remote
PARAMS ((char *dummy
));
174 remote_open
PARAMS ((char *name
, int from_tty
));
177 remote_close
PARAMS ((int quitting
));
180 remote_store_registers
PARAMS ((int regno
));
183 getpkt
PARAMS ((char *buf
, int forever
));
186 putpkt
PARAMS ((char *buf
));
189 remote_send
PARAMS ((char *buf
));
192 readchar
PARAMS ((void));
195 remote_wait
PARAMS ((WAITTYPE
*status
));
198 tohex
PARAMS ((int nib
));
201 fromhex
PARAMS ((int a
));
204 remote_detach
PARAMS ((char *args
, int from_tty
));
207 remote_interrupt
PARAMS ((int signo
));
210 remote_interrupt_twice
PARAMS ((int signo
));
212 extern struct target_ops remote_ops
; /* Forward decl */
214 /* This was 5 seconds, which is a long time to sit and wait.
215 Unless this is going though some terminal server or multiplexer or
216 other form of hairy serial connection, I would think 2 seconds would
218 static int timeout
= 2;
224 /* FIXME: This is a hack which lets this file compile. It should be getting
225 this setting from remote-utils.c. */
226 #define remote_debug (0)
228 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
229 remote_open knows that we don't have a file open when the program
231 serial_t remote_desc
= NULL
;
235 /* Maximum number of bytes to read/write at once. The value here
236 is chosen to fill up a packet (the headers account for the 32). */
237 #define MAXBUFBYTES ((PBUFSIZ-32)/2)
239 /* Round up PBUFSIZ to hold all the registers, at least. */
240 #if REGISTER_BYTES > MAXBUFBYTES
242 #define PBUFSIZ (REGISTER_BYTES * 2 + 32)
245 /* Clean up connection to a remote debugger. */
249 remote_close (quitting
)
253 SERIAL_CLOSE (remote_desc
);
257 /* Stub for catch_errors. */
260 remote_start_remote (dummy
)
263 immediate_quit
= 1; /* Allow user to interrupt it */
265 /* Ack any packet which the remote side has already sent. */
266 /* I'm not sure this \r is needed; we don't use it any other time we
268 SERIAL_WRITE (remote_desc
, "+\r", 2);
269 putpkt ("?"); /* initiate a query from remote machine */
272 start_remote (); /* Initialize gdb process mechanisms */
276 /* Open a connection to a remote debugger.
277 NAME is the filename used for communication. */
279 static DCACHE
*remote_dcache
;
282 remote_open (name
, from_tty
)
288 "To open a remote debug connection, you need to specify what serial\n\
289 device is attached to the remote system (e.g. /dev/ttya).");
291 target_preopen (from_tty
);
293 unpush_target (&remote_ops
);
295 remote_dcache
= dcache_init (remote_read_bytes
, remote_write_bytes
);
297 remote_desc
= SERIAL_OPEN (name
);
299 perror_with_name (name
);
301 if (SERIAL_SETBAUDRATE (remote_desc
, sr_get_baud_rate()))
303 SERIAL_CLOSE (remote_desc
);
304 perror_with_name (name
);
307 SERIAL_RAW (remote_desc
);
311 puts_filtered ("Remote debugging using ");
312 puts_filtered (name
);
313 puts_filtered ("\n");
315 push_target (&remote_ops
); /* Switch to using remote target now */
317 /* Start the remote connection; if error (0), discard this target.
318 In particular, if the user quits, be sure to discard it
319 (we'd be in an inconsistent state otherwise). */
320 if (!catch_errors (remote_start_remote
, (char *)0,
321 "Couldn't establish connection to remote target\n", RETURN_MASK_ALL
))
326 takes a program previously attached to and detaches it.
327 We better not have left any breakpoints
328 in the program or it'll die when it hits one.
329 Close the open connection to the remote debugger.
330 Use this when you want to detach and do something else
334 remote_detach (args
, from_tty
)
339 error ("Argument given to \"detach\" when remotely debugging.");
343 puts_filtered ("Ending remote debugging.\n");
346 /* Convert hex digit A to a number. */
352 if (a
>= '0' && a
<= '9')
354 else if (a
>= 'a' && a
<= 'f')
357 error ("Reply contains invalid hex digit");
361 /* Convert number NIB to a hex digit. */
373 /* Tell the remote machine to resume. */
376 remote_resume (pid
, step
, siggnal
)
377 int pid
, step
, siggnal
;
384 target_terminal_ours_for_output ();
385 printf_filtered ("Can't send signals to a remote system. ");
386 name
= strsigno (siggnal
);
388 printf_filtered (name
);
390 printf_filtered ("Signal %d", siggnal
);
391 printf_filtered (" not sent.\n");
392 target_terminal_inferior ();
395 dcache_flush (remote_dcache
);
397 strcpy (buf
, step
? "s": "c");
402 /* Send ^C to target to halt it. Target will respond, and send us a
406 remote_interrupt (signo
)
409 /* If this doesn't work, try more severe steps. */
410 signal (signo
, remote_interrupt_twice
);
413 printf ("remote_interrupt called\n");
415 SERIAL_WRITE (remote_desc
, "\003", 1); /* Send a ^C */
418 static void (*ofunc
)();
420 /* The user typed ^C twice. */
422 remote_interrupt_twice (signo
)
425 signal (signo
, ofunc
);
427 target_terminal_ours ();
428 if (query ("Interrupted while waiting for the program.\n\
429 Give up (and stop debugging it)? "))
431 target_mourn_inferior ();
432 return_to_top_level (RETURN_QUIT
);
436 signal (signo
, remote_interrupt
);
437 target_terminal_inferior ();
441 /* Wait until the remote machine stops, then return,
442 storing status in STATUS just as `wait' would.
443 Returns "pid" (though it's not clear what, if anything, that
444 means in the case of this target). */
450 unsigned char buf
[PBUFSIZ
];
452 WSETEXIT ((*status
), 0);
458 ofunc
= (void (*)()) signal (SIGINT
, remote_interrupt
);
459 getpkt ((char *) buf
, 1);
460 signal (SIGINT
, ofunc
);
463 warning ("Remote failure reply: %s", buf
);
464 else if (buf
[0] == 'T')
468 char regs
[MAX_REGISTER_RAW_SIZE
];
470 /* Expedited reply, containing Signal, {regno, reg} repeat */
471 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
473 n... = register number
474 r... = register contents
477 p
= &buf
[3]; /* after Txx */
483 regno
= strtol (p
, &p1
, 16); /* Read the register number */
486 warning ("Remote sent badly formed register number: %s\nPacket: '%s'\n",
492 warning ("Malformed packet (missing colon): %s\nPacket: '%s'\n",
495 if (regno
>= NUM_REGS
)
496 warning ("Remote sent bad register number %d: %s\nPacket: '%s'\n",
499 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
++)
501 if (p
[0] == 0 || p
[1] == 0)
502 warning ("Remote reply is too short: %s", buf
);
503 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
508 warning ("Remote register badly formatted: %s", buf
);
510 supply_register (regno
, regs
);
514 else if (buf
[0] == 'N')
517 bfd_vma text_addr
, data_addr
, bss_addr
;
519 /* Relocate object file. Format is NAATT;DD;BB where AA is
520 the signal number, TT is the new text address, DD is the
521 new data address, and BB is the new bss address. This is
522 used by the NLM stub; gdb may see more sections. */
524 text_addr
= strtol (p
, &p1
, 16);
525 if (p1
== p
|| *p1
!= ';')
526 warning ("Malformed relocation packet: Packet '%s'", buf
);
528 data_addr
= strtol (p
, &p1
, 16);
529 if (p1
== p
|| *p1
!= ';')
530 warning ("Malformed relocation packet: Packet '%s'", buf
);
532 bss_addr
= strtol (p
, &p1
, 16);
534 warning ("Malformed relocation packet: Packet '%s'", buf
);
536 if (symfile_objfile
!= NULL
)
538 struct section_offsets
*offs
;
540 /* FIXME: Why don't the various symfile_offsets routines
541 in the sym_fns vectors set this? */
542 if (symfile_objfile
->num_sections
== 0)
543 symfile_objfile
->num_sections
= SECT_OFF_MAX
;
545 offs
= ((struct section_offsets
*)
546 alloca (sizeof (struct section_offsets
)
547 + (symfile_objfile
->num_sections
548 * sizeof (offs
->offsets
))));
549 memcpy (offs
, symfile_objfile
->section_offsets
,
550 (sizeof (struct section_offsets
)
551 + (symfile_objfile
->num_sections
552 * sizeof (offs
->offsets
))));
553 ANOFFSET (offs
, SECT_OFF_TEXT
) = text_addr
;
554 ANOFFSET (offs
, SECT_OFF_DATA
) = data_addr
;
555 ANOFFSET (offs
, SECT_OFF_BSS
) = bss_addr
;
557 objfile_relocate (symfile_objfile
, offs
);
561 else if (buf
[0] == 'W')
563 /* The remote process exited. */
564 WSETEXIT (*status
, (fromhex (buf
[1]) << 4) + fromhex (buf
[2]));
567 else if (buf
[0] == 'S')
570 warning ("Invalid remote reply: %s", buf
);
573 WSETSTOP ((*status
), (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2]))));
578 /* Number of bytes of registers this stub implements. */
579 static int register_bytes_found
;
581 /* Read the remote registers into the block REGS. */
582 /* Currently we just read all the registers, so we don't use regno. */
585 remote_fetch_registers (regno
)
591 char regs
[REGISTER_BYTES
];
596 /* Unimplemented registers read as all bits zero. */
597 memset (regs
, 0, REGISTER_BYTES
);
599 /* Reply describes registers byte by byte, each byte encoded as two
600 hex characters. Suck them all up, then supply them to the
601 register cacheing/storage mechanism. */
604 for (i
= 0; i
< REGISTER_BYTES
; i
++)
610 warning ("Remote reply is of odd length: %s", buf
);
611 /* Don't change register_bytes_found in this case, and don't
612 print a second warning. */
615 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
619 if (i
!= register_bytes_found
)
621 register_bytes_found
= i
;
622 #ifdef REGISTER_BYTES_OK
623 if (!REGISTER_BYTES_OK (i
))
624 warning ("Remote reply is too short: %s", buf
);
629 for (i
= 0; i
< NUM_REGS
; i
++)
630 supply_register (i
, ®s
[REGISTER_BYTE(i
)]);
633 /* Prepare to store registers. Since we send them all, we have to
634 read out the ones we don't want to change first. */
637 remote_prepare_to_store ()
639 /* Make sure the entire registers array is valid. */
640 read_register_bytes (0, (char *)NULL
, REGISTER_BYTES
);
643 /* Store the remote registers from the contents of the block REGISTERS.
644 FIXME, eventually just store one register if that's all that is needed. */
648 remote_store_registers (regno
)
657 /* Command describes registers byte by byte,
658 each byte encoded as two hex characters. */
661 /* remote_prepare_to_store insures that register_bytes_found gets set. */
662 for (i
= 0; i
< register_bytes_found
; i
++)
664 *p
++ = tohex ((registers
[i
] >> 4) & 0xf);
665 *p
++ = tohex (registers
[i
] & 0xf);
674 /* Use of the data cache is disabled because it loses for looking at
675 and changing hardware I/O ports and the like. Accepting `volatile'
676 would perhaps be one way to fix it, but a better way which would
677 win for more cases would be to use the executable file for the text
678 segment, like the `icache' code below but done cleanly (in some
679 target-independent place, perhaps in target_xfer_memory, perhaps
680 based on assigning each target a speed or perhaps by some simpler
683 /* Read a word from remote address ADDR and return it.
684 This goes through the data cache. */
687 remote_fetch_word (addr
)
693 extern CORE_ADDR text_start
, text_end
;
695 if (addr
>= text_start
&& addr
< text_end
)
698 xfer_core_file (addr
, &buffer
, sizeof (int));
703 return dcache_fetch (remote_dcache
, addr
);
706 /* Write a word WORD into remote address ADDR.
707 This goes through the data cache. */
710 remote_store_word (addr
, word
)
714 dcache_poke (remote_dcache
, addr
, word
);
718 /* Write memory data directly to the remote machine.
719 This does not inform the data cache; the data cache uses this.
720 MEMADDR is the address in the remote memory space.
721 MYADDR is the address of the buffer in our space.
722 LEN is the number of bytes.
724 Returns number of bytes transferred, or 0 for error. */
727 remote_write_bytes (memaddr
, myaddr
, len
)
729 unsigned char *myaddr
;
736 if (len
> PBUFSIZ
/ 2 - 20)
739 sprintf (buf
, "M%x,%x:", memaddr
, len
);
741 /* We send target system values byte by byte, in increasing byte addresses,
742 each byte encoded as two hex characters. */
744 p
= buf
+ strlen (buf
);
745 for (i
= 0; i
< len
; i
++)
747 *p
++ = tohex ((myaddr
[i
] >> 4) & 0xf);
748 *p
++ = tohex (myaddr
[i
] & 0xf);
757 /* There is no correspondance between what the remote protocol uses
758 for errors and errno codes. We would like a cleaner way of
759 representing errors (big enough to include errno codes, bfd_error
760 codes, and others). But for now just return EIO. */
767 /* Read memory data directly from the remote machine.
768 This does not use the data cache; the data cache uses this.
769 MEMADDR is the address in the remote memory space.
770 MYADDR is the address of the buffer in our space.
771 LEN is the number of bytes.
773 Returns number of bytes transferred, or 0 for error. */
776 remote_read_bytes (memaddr
, myaddr
, len
)
778 unsigned char *myaddr
;
785 if (len
> PBUFSIZ
/ 2 - 1)
788 sprintf (buf
, "m%x,%x", memaddr
, len
);
794 /* There is no correspondance between what the remote protocol uses
795 for errors and errno codes. We would like a cleaner way of
796 representing errors (big enough to include errno codes, bfd_error
797 codes, and others). But for now just return EIO. */
802 /* Reply describes memory byte by byte,
803 each byte encoded as two hex characters. */
806 for (i
= 0; i
< len
; i
++)
808 if (p
[0] == 0 || p
[1] == 0)
809 /* Reply is short. This means that we were able to read only part
810 of what we wanted to. */
812 myaddr
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
818 /* Read or write LEN bytes from inferior memory at MEMADDR, transferring
819 to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is
820 nonzero. Returns length of data written or read; 0 for error. */
824 remote_xfer_memory(memaddr
, myaddr
, len
, should_write
, target
)
829 struct target_ops
*target
; /* ignored */
833 int total_xferred
= 0;
837 if (len
> MAXBUFBYTES
)
838 xfersize
= MAXBUFBYTES
;
843 bytes_xferred
= remote_write_bytes (memaddr
, myaddr
, xfersize
);
845 bytes_xferred
= remote_read_bytes (memaddr
, myaddr
, xfersize
);
847 /* If we get an error, we are done xferring. */
848 if (bytes_xferred
== 0)
851 memaddr
+= bytes_xferred
;
852 myaddr
+= bytes_xferred
;
853 len
-= bytes_xferred
;
854 total_xferred
+= bytes_xferred
;
856 return total_xferred
;
860 remote_files_info (ignore
)
861 struct target_ops
*ignore
;
863 puts_filtered ("Debugging a target over a serial line.\n");
866 /* Stuff for dealing with the packets which are part of this protocol.
867 See comment at top of file for details. */
869 /* Read a single character from the remote end, masking it down to 7 bits. */
876 ch
= SERIAL_READCHAR (remote_desc
, timeout
);
884 /* Send the command in BUF to the remote machine,
885 and read the reply into BUF.
886 Report an error if we get an error reply. */
897 error ("Remote failure reply: %s", buf
);
900 /* Send a packet to the remote machine, with error checking.
901 The data of the packet is in BUF. */
908 unsigned char csum
= 0;
910 int cnt
= strlen (buf
);
914 /* Copy the packet into buffer BUF2, encapsulating it
915 and giving it a checksum. */
917 if (cnt
> sizeof(buf2
) - 5) /* Prosanity check */
923 for (i
= 0; i
< cnt
; i
++)
929 *p
++ = tohex ((csum
>> 4) & 0xf);
930 *p
++ = tohex (csum
& 0xf);
932 /* Send it over and over until we get a positive ack. */
939 printf ("Sending packet: %s...", buf2
); fflush(stdout
);
941 if (SERIAL_WRITE (remote_desc
, buf2
, p
- buf2
))
942 perror_with_name ("putpkt: write failed");
944 /* read until either a timeout occurs (-2) or '+' is read */
956 break; /* Retransmit buffer */
958 perror_with_name ("putpkt: couldn't read ACK");
960 error ("putpkt: EOF while trying to read ACK");
963 printf ("%02X %c ", ch
&0xFF, ch
);
966 break; /* Here to retransmit */
971 /* Read a packet from the remote machine, with error checking,
972 and store it in BUF. BUF is expected to be of size PBUFSIZ.
973 If FOREVER, wait forever rather than timing out; this is used
974 while the target is executing user code. */
977 getpkt (buf
, forever
)
984 unsigned char c1
, c2
;
986 #define MAX_RETRIES 10
990 /* This can loop forever if the remote side sends us characters
991 continuously, but if it pauses, we'll get a zero from readchar
992 because of timeout. Then we'll count that as a retry. */
995 if (c
> 0 && c
!= '$')
998 if (c
== SERIAL_TIMEOUT
)
1002 if (++retries
>= MAX_RETRIES
)
1003 if (remote_debug
) puts_filtered ("Timed out.\n");
1007 if (c
== SERIAL_EOF
)
1008 error ("Remote connection closed");
1009 if (c
== SERIAL_ERROR
)
1010 perror_with_name ("Remote communication error");
1012 /* Force csum to be zero here because of possible error retry. */
1019 if (c
== SERIAL_TIMEOUT
)
1022 puts_filtered ("Timeout in mid-packet, retrying\n");
1023 goto whole
; /* Start a new packet, count retries */
1028 puts_filtered ("Saw new packet start in middle of old one\n");
1029 goto whole
; /* Start a new packet, count retries */
1033 if (bp
>= buf
+PBUFSIZ
-1)
1036 puts_filtered ("Remote packet too long: ");
1037 puts_filtered (buf
);
1038 puts_filtered ("\n");
1046 c1
= fromhex (readchar ());
1047 c2
= fromhex (readchar ());
1048 if ((csum
& 0xff) == (c1
<< 4) + c2
)
1050 printf_filtered ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
1051 (c1
<< 4) + c2
, csum
& 0xff);
1052 puts_filtered (buf
);
1053 puts_filtered ("\n");
1055 /* Try the whole thing again. */
1057 if (++retries
< MAX_RETRIES
)
1059 SERIAL_WRITE (remote_desc
, "-", 1);
1063 printf ("Ignoring packet error, continuing...\n");
1070 SERIAL_WRITE (remote_desc
, "+", 1);
1073 fprintf (stderr
,"Packet received: %s\n", buf
);
1080 /* Don't wait for it to die. I'm not really sure it matters whether
1081 we do or not. For the existing stubs, kill is a noop. */
1082 target_mourn_inferior ();
1088 unpush_target (&remote_ops
);
1089 generic_mourn_inferior ();
1092 #ifdef REMOTE_BREAKPOINT
1094 /* On some machines, e.g. 68k, we may use a different breakpoint instruction
1095 than other targets. */
1096 static unsigned char break_insn
[] = REMOTE_BREAKPOINT
;
1098 /* Check that it fits in BREAKPOINT_MAX bytes. */
1099 static unsigned char check_break_insn_size
[BREAKPOINT_MAX
] = REMOTE_BREAKPOINT
;
1101 #else /* No REMOTE_BREAKPOINT. */
1103 /* Same old breakpoint instruction. This code does nothing different
1104 than mem-break.c. */
1105 static unsigned char break_insn
[] = BREAKPOINT
;
1107 #endif /* No REMOTE_BREAKPOINT. */
1109 /* Insert a breakpoint on targets that don't have any better breakpoint
1110 support. We read the contents of the target location and stash it,
1111 then overwrite it with a breakpoint instruction. ADDR is the target
1112 location in the target machine. CONTENTS_CACHE is a pointer to
1113 memory allocated for saving the target contents. It is guaranteed
1114 by the caller to be long enough to save sizeof BREAKPOINT bytes (this
1115 is accomplished via BREAKPOINT_MAX). */
1118 remote_insert_breakpoint (addr
, contents_cache
)
1120 char *contents_cache
;
1124 val
= target_read_memory (addr
, contents_cache
, sizeof break_insn
);
1127 val
= target_write_memory (addr
, (char *)break_insn
, sizeof break_insn
);
1133 remote_remove_breakpoint (addr
, contents_cache
)
1135 char *contents_cache
;
1137 return target_write_memory (addr
, contents_cache
, sizeof break_insn
);
1140 /* Define the target subroutine names */
1142 struct target_ops remote_ops
= {
1143 "remote", /* to_shortname */
1144 "Remote serial target in gdb-specific protocol", /* to_longname */
1145 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
1146 Specify the serial device it is connected to (e.g. /dev/ttya).", /* to_doc */
1147 remote_open
, /* to_open */
1148 remote_close
, /* to_close */
1149 NULL
, /* to_attach */
1150 remote_detach
, /* to_detach */
1151 remote_resume
, /* to_resume */
1152 remote_wait
, /* to_wait */
1153 remote_fetch_registers
, /* to_fetch_registers */
1154 remote_store_registers
, /* to_store_registers */
1155 remote_prepare_to_store
, /* to_prepare_to_store */
1156 remote_xfer_memory
, /* to_xfer_memory */
1157 remote_files_info
, /* to_files_info */
1159 remote_insert_breakpoint
, /* to_insert_breakpoint */
1160 remote_remove_breakpoint
, /* to_remove_breakpoint */
1162 NULL
, /* to_terminal_init */
1163 NULL
, /* to_terminal_inferior */
1164 NULL
, /* to_terminal_ours_for_output */
1165 NULL
, /* to_terminal_ours */
1166 NULL
, /* to_terminal_info */
1167 remote_kill
, /* to_kill */
1168 generic_load
, /* to_load */
1169 NULL
, /* to_lookup_symbol */
1170 NULL
, /* to_create_inferior */
1171 remote_mourn
, /* to_mourn_inferior */
1173 0, /* to_notice_signals */
1174 process_stratum
, /* to_stratum */
1176 1, /* to_has_all_memory */
1177 1, /* to_has_memory */
1178 1, /* to_has_stack */
1179 1, /* to_has_registers */
1180 1, /* to_has_execution */
1181 NULL
, /* sections */
1182 NULL
, /* sections_end */
1183 OPS_MAGIC
/* to_magic */
1187 _initialize_remote ()
1189 add_target (&remote_ops
);