1 /* Remote debugging interface for MIPS remote debugging protocol.
3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
4 2003, 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
6 Contributed by Cygnus Support. Written by Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
32 #include "exceptions.h"
33 #include "gdb_string.h"
37 #include "mips-tdep.h"
40 /* Breakpoint types. Values 0, 1, and 2 must agree with the watch
41 types passed by breakpoint.c to target_insert_watchpoint.
42 Value 3 is our own invention, and is used for ordinary instruction
43 breakpoints. Value 4 is used to mark an unused watchpoint in tables. */
53 /* Prototypes for local functions. */
55 static int mips_readchar (int timeout
);
57 static int mips_receive_header (unsigned char *hdr
, int *pgarbage
,
60 static int mips_receive_trailer (unsigned char *trlr
, int *pgarbage
,
61 int *pch
, int timeout
);
63 static int mips_cksum (const unsigned char *hdr
,
64 const unsigned char *data
, int len
);
66 static void mips_send_packet (const char *s
, int get_ack
);
68 static void mips_send_command (const char *cmd
, int prompt
);
70 static int mips_receive_packet (char *buff
, int throw_error
, int timeout
);
72 static ULONGEST
mips_request (int cmd
, ULONGEST addr
, ULONGEST data
,
73 int *perr
, int timeout
, char *buff
);
75 static void mips_initialize (void);
77 static void mips_open (char *name
, int from_tty
);
79 static void pmon_open (char *name
, int from_tty
);
81 static void ddb_open (char *name
, int from_tty
);
83 static void lsi_open (char *name
, int from_tty
);
85 static void mips_close (int quitting
);
87 static void mips_detach (struct target_ops
*ops
, char *args
, int from_tty
);
89 static int mips_map_regno (struct gdbarch
*, int);
91 static void mips_prepare_to_store (struct regcache
*regcache
);
93 static unsigned int mips_fetch_word (CORE_ADDR addr
);
95 static int mips_store_word (CORE_ADDR addr
, unsigned int value
,
98 static int mips_xfer_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
,
100 struct mem_attrib
*attrib
,
101 struct target_ops
*target
);
103 static void mips_files_info (struct target_ops
*ignore
);
105 static void mips_mourn_inferior (void);
107 static int pmon_makeb64 (unsigned long v
, char *p
, int n
, int *chksum
);
109 static int pmon_zeroset (int recsize
, char **buff
, int *amount
,
110 unsigned int *chksum
);
112 static int pmon_checkset (int recsize
, char **buff
, int *value
);
114 static void pmon_make_fastrec (char **outbuf
, unsigned char *inbuf
,
115 int *inptr
, int inamount
, int *recsize
,
116 unsigned int *csum
, unsigned int *zerofill
);
118 static int pmon_check_ack (char *mesg
);
120 static void pmon_start_download (void);
122 static void pmon_end_download (int final
, int bintotal
);
124 static void pmon_download (char *buffer
, int length
);
126 static void pmon_load_fast (char *file
);
128 static void mips_load (char *file
, int from_tty
);
130 static int mips_make_srec (char *buffer
, int type
, CORE_ADDR memaddr
,
131 unsigned char *myaddr
, int len
);
133 static int mips_set_breakpoint (CORE_ADDR addr
, int len
, enum break_type type
);
135 static int mips_clear_breakpoint (CORE_ADDR addr
, int len
,
136 enum break_type type
);
138 static int mips_common_breakpoint (int set
, CORE_ADDR addr
, int len
,
139 enum break_type type
);
141 /* Forward declarations. */
142 extern struct target_ops mips_ops
;
143 extern struct target_ops pmon_ops
;
144 extern struct target_ops ddb_ops
;
146 /* The MIPS remote debugging interface is built on top of a simple
147 packet protocol. Each packet is organized as follows:
149 SYN The first character is always a SYN (ASCII 026, or ^V). SYN
150 may not appear anywhere else in the packet. Any time a SYN is
151 seen, a new packet should be assumed to have begun.
154 This byte contains the upper five bits of the logical length
155 of the data section, plus a single bit indicating whether this
156 is a data packet or an acknowledgement. The documentation
157 indicates that this bit is 1 for a data packet, but the actual
158 board uses 1 for an acknowledgement. The value of the byte is
159 0x40 + (ack ? 0x20 : 0) + (len >> 6)
160 (we always have 0 <= len < 1024). Acknowledgement packets do
161 not carry data, and must have a data length of 0.
163 LEN1 This byte contains the lower six bits of the logical length of
164 the data section. The value is
167 SEQ This byte contains the six bit sequence number of the packet.
170 An acknowlegment packet contains the sequence number of the
171 packet being acknowledged plus 1 modulo 64. Data packets are
172 transmitted in sequence. There may only be one outstanding
173 unacknowledged data packet at a time. The sequence numbers
174 are independent in each direction. If an acknowledgement for
175 the previous packet is received (i.e., an acknowledgement with
176 the sequence number of the packet just sent) the packet just
177 sent should be retransmitted. If no acknowledgement is
178 received within a timeout period, the packet should be
179 retransmitted. This has an unfortunate failure condition on a
180 high-latency line, as a delayed acknowledgement may lead to an
181 endless series of duplicate packets.
183 DATA The actual data bytes follow. The following characters are
184 escaped inline with DLE (ASCII 020, or ^P):
190 The additional DLE characters are not counted in the logical
191 length stored in the TYPE_LEN and LEN1 bytes.
196 These bytes contain an 18 bit checksum of the complete
197 contents of the packet excluding the SEQ byte and the
198 CSUM[123] bytes. The checksum is simply the twos complement
199 addition of all the bytes treated as unsigned characters. The
200 values of the checksum bytes are:
201 CSUM1: 0x40 + ((cksum >> 12) & 0x3f)
202 CSUM2: 0x40 + ((cksum >> 6) & 0x3f)
203 CSUM3: 0x40 + (cksum & 0x3f)
205 It happens that the MIPS remote debugging protocol always
206 communicates with ASCII strings. Because of this, this
207 implementation doesn't bother to handle the DLE quoting mechanism,
208 since it will never be required. */
212 /* The SYN character which starts each packet. */
215 /* The 0x40 used to offset each packet (this value ensures that all of
216 the header and trailer bytes, other than SYN, are printable ASCII
218 #define HDR_OFFSET 0x40
220 /* The indices of the bytes in the packet header. */
221 #define HDR_INDX_SYN 0
222 #define HDR_INDX_TYPE_LEN 1
223 #define HDR_INDX_LEN1 2
224 #define HDR_INDX_SEQ 3
227 /* The data/ack bit in the TYPE_LEN header byte. */
228 #define TYPE_LEN_DA_BIT 0x20
229 #define TYPE_LEN_DATA 0
230 #define TYPE_LEN_ACK TYPE_LEN_DA_BIT
232 /* How to compute the header bytes. */
233 #define HDR_SET_SYN(data, len, seq) (SYN)
234 #define HDR_SET_TYPE_LEN(data, len, seq) \
236 + ((data) ? TYPE_LEN_DATA : TYPE_LEN_ACK) \
237 + (((len) >> 6) & 0x1f))
238 #define HDR_SET_LEN1(data, len, seq) (HDR_OFFSET + ((len) & 0x3f))
239 #define HDR_SET_SEQ(data, len, seq) (HDR_OFFSET + (seq))
241 /* Check that a header byte is reasonable. */
242 #define HDR_CHECK(ch) (((ch) & HDR_OFFSET) == HDR_OFFSET)
244 /* Get data from the header. These macros evaluate their argument
246 #define HDR_IS_DATA(hdr) \
247 (((hdr)[HDR_INDX_TYPE_LEN] & TYPE_LEN_DA_BIT) == TYPE_LEN_DATA)
248 #define HDR_GET_LEN(hdr) \
249 ((((hdr)[HDR_INDX_TYPE_LEN] & 0x1f) << 6) + (((hdr)[HDR_INDX_LEN1] & 0x3f)))
250 #define HDR_GET_SEQ(hdr) ((unsigned int)(hdr)[HDR_INDX_SEQ] & 0x3f)
252 /* The maximum data length. */
253 #define DATA_MAXLEN 1023
255 /* The trailer offset. */
256 #define TRLR_OFFSET HDR_OFFSET
258 /* The indices of the bytes in the packet trailer. */
259 #define TRLR_INDX_CSUM1 0
260 #define TRLR_INDX_CSUM2 1
261 #define TRLR_INDX_CSUM3 2
262 #define TRLR_LENGTH 3
264 /* How to compute the trailer bytes. */
265 #define TRLR_SET_CSUM1(cksum) (TRLR_OFFSET + (((cksum) >> 12) & 0x3f))
266 #define TRLR_SET_CSUM2(cksum) (TRLR_OFFSET + (((cksum) >> 6) & 0x3f))
267 #define TRLR_SET_CSUM3(cksum) (TRLR_OFFSET + (((cksum) ) & 0x3f))
269 /* Check that a trailer byte is reasonable. */
270 #define TRLR_CHECK(ch) (((ch) & TRLR_OFFSET) == TRLR_OFFSET)
272 /* Get data from the trailer. This evaluates its argument multiple
274 #define TRLR_GET_CKSUM(trlr) \
275 ((((trlr)[TRLR_INDX_CSUM1] & 0x3f) << 12) \
276 + (((trlr)[TRLR_INDX_CSUM2] & 0x3f) << 6) \
277 + ((trlr)[TRLR_INDX_CSUM3] & 0x3f))
279 /* The sequence number modulos. */
280 #define SEQ_MODULOS (64)
282 /* PMON commands to load from the serial port or UDP socket. */
283 #define LOAD_CMD "load -b -s tty0\r"
284 #define LOAD_CMD_UDP "load -b -s udp\r"
286 /* The target vectors for the four different remote MIPS targets.
287 These are initialized with code in _initialize_remote_mips instead
288 of static initializers, to make it easier to extend the target_ops
290 struct target_ops mips_ops
, pmon_ops
, ddb_ops
, lsi_ops
;
292 enum mips_monitor_type
294 /* IDT/SIM monitor being used: */
296 /* PMON monitor being used: */
297 MON_PMON
, /* 3.0.83 [COGENT,EB,FP,NET] Algorithmics Ltd. Nov 9 1995 17:19:50 */
298 MON_DDB
, /* 2.7.473 [DDBVR4300,EL,FP,NET] Risq Modular Systems, Thu Jun 6 09:28:40 PDT 1996 */
299 MON_LSI
, /* 4.3.12 [EB,FP], LSI LOGIC Corp. Tue Feb 25 13:22:14 1997 */
300 /* Last and unused value, for sizing vectors, etc. */
303 static enum mips_monitor_type mips_monitor
= MON_LAST
;
305 /* The monitor prompt text. If the user sets the PMON prompt
306 to some new value, the GDB `set monitor-prompt' command must also
307 be used to inform GDB about the expected prompt. Otherwise, GDB
308 will not be able to connect to PMON in mips_initialize().
309 If the `set monitor-prompt' command is not used, the expected
310 default prompt will be set according the target:
317 static char *mips_monitor_prompt
;
319 /* Set to 1 if the target is open. */
320 static int mips_is_open
;
322 /* Currently active target description (if mips_is_open == 1) */
323 static struct target_ops
*current_ops
;
325 /* Set to 1 while the connection is being initialized. */
326 static int mips_initializing
;
328 /* Set to 1 while the connection is being brought down. */
329 static int mips_exiting
;
331 /* The next sequence number to send. */
332 static unsigned int mips_send_seq
;
334 /* The next sequence number we expect to receive. */
335 static unsigned int mips_receive_seq
;
337 /* The time to wait before retransmitting a packet, in seconds. */
338 static int mips_retransmit_wait
= 3;
340 /* The number of times to try retransmitting a packet before giving up. */
341 static int mips_send_retries
= 10;
343 /* The number of garbage characters to accept when looking for an
344 SYN for the next packet. */
345 static int mips_syn_garbage
= 10;
347 /* The time to wait for a packet, in seconds. */
348 static int mips_receive_wait
= 5;
350 /* Set if we have sent a packet to the board but have not yet received
352 static int mips_need_reply
= 0;
354 /* Handle used to access serial I/O stream. */
355 static struct serial
*mips_desc
;
357 /* UDP handle used to download files to target. */
358 static struct serial
*udp_desc
;
359 static int udp_in_use
;
361 /* TFTP filename used to download files to DDB board, in the form
363 static char *tftp_name
; /* host:filename */
364 static char *tftp_localname
; /* filename portion of above */
365 static int tftp_in_use
;
366 static FILE *tftp_file
;
368 /* Counts the number of times the user tried to interrupt the target (usually
370 static int interrupt_count
;
372 /* If non-zero, means that the target is running. */
373 static int mips_wait_flag
= 0;
375 /* If non-zero, monitor supports breakpoint commands. */
376 static int monitor_supports_breakpoints
= 0;
378 /* Data cache header. */
380 #if 0 /* not used (yet?) */
381 static DCACHE
*mips_dcache
;
384 /* Non-zero means that we've just hit a read or write watchpoint */
385 static int hit_watchpoint
;
387 /* Table of breakpoints/watchpoints (used only on LSI PMON target).
388 The table is indexed by a breakpoint number, which is an integer
389 from 0 to 255 returned by the LSI PMON when a breakpoint is set.
391 #define MAX_LSI_BREAKPOINTS 256
392 struct lsi_breakpoint_info
394 enum break_type type
; /* type of breakpoint */
395 CORE_ADDR addr
; /* address of breakpoint */
396 int len
; /* length of region being watched */
397 unsigned long value
; /* value to watch */
399 lsi_breakpoints
[MAX_LSI_BREAKPOINTS
];
401 /* Error/warning codes returned by LSI PMON for breakpoint commands.
402 Warning values may be ORed together; error values may not. */
403 #define W_WARN 0x100 /* This bit is set if the error code is a warning */
404 #define W_MSK 0x101 /* warning: Range feature is supported via mask */
405 #define W_VAL 0x102 /* warning: Value check is not supported in hardware */
406 #define W_QAL 0x104 /* warning: Requested qualifiers are not supported in hardware */
408 #define E_ERR 0x200 /* This bit is set if the error code is an error */
409 #define E_BPT 0x200 /* error: No such breakpoint number */
410 #define E_RGE 0x201 /* error: Range is not supported */
411 #define E_QAL 0x202 /* error: The requested qualifiers can not be used */
412 #define E_OUT 0x203 /* error: Out of hardware resources */
413 #define E_NON 0x204 /* error: Hardware breakpoint not supported */
417 int code
; /* error code */
418 char *string
; /* string associated with this code */
421 struct lsi_error lsi_warning_table
[] =
423 {W_MSK
, "Range feature is supported via mask"},
424 {W_VAL
, "Value check is not supported in hardware"},
425 {W_QAL
, "Requested qualifiers are not supported in hardware"},
429 struct lsi_error lsi_error_table
[] =
431 {E_BPT
, "No such breakpoint number"},
432 {E_RGE
, "Range is not supported"},
433 {E_QAL
, "The requested qualifiers can not be used"},
434 {E_OUT
, "Out of hardware resources"},
435 {E_NON
, "Hardware breakpoint not supported"},
439 /* Set to 1 with the 'set monitor-warnings' command to enable printing
440 of warnings returned by PMON when hardware breakpoints are used. */
441 static int monitor_warnings
;
448 serial_close (mips_desc
);
452 serial_close (udp_desc
);
458 /* Handle low-level error that we can't recover from. Note that just
459 error()ing out from target_wait or some such low-level place will cause
460 all hell to break loose--the rest of GDB will tend to get left in an
461 inconsistent state. */
464 mips_error (char *string
,...)
468 va_start (args
, string
);
470 target_terminal_ours ();
471 wrap_here (""); /* Force out any buffered output */
472 gdb_flush (gdb_stdout
);
474 fputs_filtered (error_pre_print
, gdb_stderr
);
475 vfprintf_filtered (gdb_stderr
, string
, args
);
476 fprintf_filtered (gdb_stderr
, "\n");
478 gdb_flush (gdb_stderr
);
480 /* Clean up in such a way that mips_close won't try to talk to the
481 board (it almost surely won't work since we weren't able to talk to
485 printf_unfiltered ("Ending remote MIPS debugging.\n");
486 target_mourn_inferior ();
488 deprecated_throw_reason (RETURN_ERROR
);
491 /* putc_readable - print a character, displaying non-printable chars in
492 ^x notation or in hex. */
495 fputc_readable (int ch
, struct ui_file
*file
)
498 fputc_unfiltered ('\n', file
);
500 fprintf_unfiltered (file
, "\\r");
501 else if (ch
< 0x20) /* ASCII control character */
502 fprintf_unfiltered (file
, "^%c", ch
+ '@');
503 else if (ch
>= 0x7f) /* non-ASCII characters (rubout or greater) */
504 fprintf_unfiltered (file
, "[%02x]", ch
& 0xff);
506 fputc_unfiltered (ch
, file
);
510 /* puts_readable - print a string, displaying non-printable chars in
511 ^x notation or in hex. */
514 fputs_readable (const char *string
, struct ui_file
*file
)
518 while ((c
= *string
++) != '\0')
519 fputc_readable (c
, file
);
523 /* Wait until STRING shows up in mips_desc. Returns 1 if successful, else 0 if
524 timed out. TIMEOUT specifies timeout value in seconds.
528 mips_expect_timeout (const char *string
, int timeout
)
530 const char *p
= string
;
534 fprintf_unfiltered (gdb_stdlog
, "Expected \"");
535 fputs_readable (string
, gdb_stdlog
);
536 fprintf_unfiltered (gdb_stdlog
, "\", got \"");
544 /* Must use serial_readchar() here cuz mips_readchar would get
545 confused if we were waiting for the mips_monitor_prompt... */
547 c
= serial_readchar (mips_desc
, timeout
);
549 if (c
== SERIAL_TIMEOUT
)
552 fprintf_unfiltered (gdb_stdlog
, "\": FAIL\n");
557 fputc_readable (c
, gdb_stdlog
);
565 fprintf_unfiltered (gdb_stdlog
, "\": OK\n");
578 /* Wait until STRING shows up in mips_desc. Returns 1 if successful, else 0 if
579 timed out. The timeout value is hard-coded to 2 seconds. Use
580 mips_expect_timeout if a different timeout value is needed.
584 mips_expect (const char *string
)
586 return mips_expect_timeout (string
, remote_timeout
);
589 /* Read a character from the remote, aborting on error. Returns
590 SERIAL_TIMEOUT on timeout (since that's what serial_readchar()
591 returns). FIXME: If we see the string mips_monitor_prompt from the
592 board, then we are debugging on the main console port, and we have
593 somehow dropped out of remote debugging mode. In this case, we
594 automatically go back in to remote debugging mode. This is a hack,
595 put in because I can't find any way for a program running on the
596 remote board to terminate without also ending remote debugging
597 mode. I assume users won't have any trouble with this; for one
598 thing, the IDT documentation generally assumes that the remote
599 debugging port is not the console port. This is, however, very
600 convenient for DejaGnu when you only have one connected serial
604 mips_readchar (int timeout
)
607 static int state
= 0;
608 int mips_monitor_prompt_len
= strlen (mips_monitor_prompt
);
614 if (i
== -1 && watchdog
> 0)
618 if (state
== mips_monitor_prompt_len
)
620 ch
= serial_readchar (mips_desc
, timeout
);
622 if (ch
== SERIAL_TIMEOUT
&& timeout
== -1) /* Watchdog went off */
624 target_mourn_inferior ();
625 error ("Watchdog has expired. Target detached.\n");
628 if (ch
== SERIAL_EOF
)
629 mips_error ("End of file from remote");
630 if (ch
== SERIAL_ERROR
)
631 mips_error ("Error reading from remote: %s", safe_strerror (errno
));
632 if (remote_debug
> 1)
634 /* Don't use _filtered; we can't deal with a QUIT out of
635 target_wait, and I think this might be called from there. */
636 if (ch
!= SERIAL_TIMEOUT
)
637 fprintf_unfiltered (gdb_stdlog
, "Read '%c' %d 0x%x\n", ch
, ch
, ch
);
639 fprintf_unfiltered (gdb_stdlog
, "Timed out in read\n");
642 /* If we have seen mips_monitor_prompt and we either time out, or
643 we see a @ (which was echoed from a packet we sent), reset the
644 board as described above. The first character in a packet after
645 the SYN (which is not echoed) is always an @ unless the packet is
646 more than 64 characters long, which ours never are. */
647 if ((ch
== SERIAL_TIMEOUT
|| ch
== '@')
648 && state
== mips_monitor_prompt_len
649 && !mips_initializing
652 if (remote_debug
> 0)
653 /* Don't use _filtered; we can't deal with a QUIT out of
654 target_wait, and I think this might be called from there. */
655 fprintf_unfiltered (gdb_stdlog
, "Reinitializing MIPS debugging mode\n");
662 /* At this point, about the only thing we can do is abort the command
663 in progress and get back to command level as quickly as possible. */
665 error ("Remote board reset, debug protocol re-initialized.");
668 if (ch
== mips_monitor_prompt
[state
])
676 /* Get a packet header, putting the data in the supplied buffer.
677 PGARBAGE is a pointer to the number of garbage characters received
678 so far. CH is the last character received. Returns 0 for success,
679 or -1 for timeout. */
682 mips_receive_header (unsigned char *hdr
, int *pgarbage
, int ch
, int timeout
)
688 /* Wait for a SYN. mips_syn_garbage is intended to prevent
689 sitting here indefinitely if the board sends us one garbage
690 character per second. ch may already have a value from the
691 last time through the loop. */
694 ch
= mips_readchar (timeout
);
695 if (ch
== SERIAL_TIMEOUT
)
699 /* Printing the character here lets the user of gdb see
700 what the program is outputting, if the debugging is
701 being done on the console port. Don't use _filtered:
702 we can't deal with a QUIT out of target_wait and
703 buffered target output confuses the user. */
704 if (!mips_initializing
|| remote_debug
> 0)
706 if (isprint (ch
) || isspace (ch
))
708 fputc_unfiltered (ch
, gdb_stdtarg
);
712 fputc_readable (ch
, gdb_stdtarg
);
714 gdb_flush (gdb_stdtarg
);
717 /* Only count unprintable characters. */
718 if (! (isprint (ch
) || isspace (ch
)))
721 if (mips_syn_garbage
> 0
722 && *pgarbage
> mips_syn_garbage
)
723 mips_error ("Debug protocol failure: more than %d characters before a sync.",
728 /* Get the packet header following the SYN. */
729 for (i
= 1; i
< HDR_LENGTH
; i
++)
731 ch
= mips_readchar (timeout
);
732 if (ch
== SERIAL_TIMEOUT
)
734 /* Make sure this is a header byte. */
735 if (ch
== SYN
|| !HDR_CHECK (ch
))
741 /* If we got the complete header, we can return. Otherwise we
742 loop around and keep looking for SYN. */
748 /* Get a packet header, putting the data in the supplied buffer.
749 PGARBAGE is a pointer to the number of garbage characters received
750 so far. The last character read is returned in *PCH. Returns 0
751 for success, -1 for timeout, -2 for error. */
754 mips_receive_trailer (unsigned char *trlr
, int *pgarbage
, int *pch
, int timeout
)
759 for (i
= 0; i
< TRLR_LENGTH
; i
++)
761 ch
= mips_readchar (timeout
);
763 if (ch
== SERIAL_TIMEOUT
)
765 if (!TRLR_CHECK (ch
))
772 /* Get the checksum of a packet. HDR points to the packet header.
773 DATA points to the packet data. LEN is the length of DATA. */
776 mips_cksum (const unsigned char *hdr
, const unsigned char *data
, int len
)
778 const unsigned char *p
;
784 /* The initial SYN is not included in the checksum. */
798 /* Send a packet containing the given ASCII string. */
801 mips_send_packet (const char *s
, int get_ack
)
803 /* unsigned */ int len
;
804 unsigned char *packet
;
809 if (len
> DATA_MAXLEN
)
810 mips_error ("MIPS protocol data packet too long: %s", s
);
812 packet
= (unsigned char *) alloca (HDR_LENGTH
+ len
+ TRLR_LENGTH
+ 1);
814 packet
[HDR_INDX_SYN
] = HDR_SET_SYN (1, len
, mips_send_seq
);
815 packet
[HDR_INDX_TYPE_LEN
] = HDR_SET_TYPE_LEN (1, len
, mips_send_seq
);
816 packet
[HDR_INDX_LEN1
] = HDR_SET_LEN1 (1, len
, mips_send_seq
);
817 packet
[HDR_INDX_SEQ
] = HDR_SET_SEQ (1, len
, mips_send_seq
);
819 memcpy (packet
+ HDR_LENGTH
, s
, len
);
821 cksum
= mips_cksum (packet
, packet
+ HDR_LENGTH
, len
);
822 packet
[HDR_LENGTH
+ len
+ TRLR_INDX_CSUM1
] = TRLR_SET_CSUM1 (cksum
);
823 packet
[HDR_LENGTH
+ len
+ TRLR_INDX_CSUM2
] = TRLR_SET_CSUM2 (cksum
);
824 packet
[HDR_LENGTH
+ len
+ TRLR_INDX_CSUM3
] = TRLR_SET_CSUM3 (cksum
);
826 /* Increment the sequence number. This will set mips_send_seq to
827 the sequence number we expect in the acknowledgement. */
828 mips_send_seq
= (mips_send_seq
+ 1) % SEQ_MODULOS
;
830 /* We can only have one outstanding data packet, so we just wait for
831 the acknowledgement here. Keep retransmitting the packet until
832 we get one, or until we've tried too many times. */
833 for (try = 0; try < mips_send_retries
; try++)
838 if (remote_debug
> 0)
840 /* Don't use _filtered; we can't deal with a QUIT out of
841 target_wait, and I think this might be called from there. */
842 packet
[HDR_LENGTH
+ len
+ TRLR_LENGTH
] = '\0';
843 fprintf_unfiltered (gdb_stdlog
, "Writing \"%s\"\n", packet
+ 1);
846 if (serial_write (mips_desc
, packet
,
847 HDR_LENGTH
+ len
+ TRLR_LENGTH
) != 0)
848 mips_error ("write to target failed: %s", safe_strerror (errno
));
857 unsigned char hdr
[HDR_LENGTH
+ 1];
858 unsigned char trlr
[TRLR_LENGTH
+ 1];
862 /* Get the packet header. If we time out, resend the data
864 err
= mips_receive_header (hdr
, &garbage
, ch
, mips_retransmit_wait
);
870 /* If we get a data packet, assume it is a duplicate and
871 ignore it. FIXME: If the acknowledgement is lost, this
872 data packet may be the packet the remote sends after the
874 if (HDR_IS_DATA (hdr
))
878 /* Ignore any errors raised whilst attempting to ignore
881 len
= HDR_GET_LEN (hdr
);
883 for (i
= 0; i
< len
; i
++)
887 rch
= mips_readchar (remote_timeout
);
893 if (rch
== SERIAL_TIMEOUT
)
895 /* ignore the character */
899 (void) mips_receive_trailer (trlr
, &garbage
, &ch
,
902 /* We don't bother checking the checksum, or providing an
903 ACK to the packet. */
907 /* If the length is not 0, this is a garbled packet. */
908 if (HDR_GET_LEN (hdr
) != 0)
911 /* Get the packet trailer. */
912 err
= mips_receive_trailer (trlr
, &garbage
, &ch
,
913 mips_retransmit_wait
);
915 /* If we timed out, resend the data packet. */
919 /* If we got a bad character, reread the header. */
923 /* If the checksum does not match the trailer checksum, this
924 is a bad packet; ignore it. */
925 if (mips_cksum (hdr
, (unsigned char *) NULL
, 0)
926 != TRLR_GET_CKSUM (trlr
))
929 if (remote_debug
> 0)
931 hdr
[HDR_LENGTH
] = '\0';
932 trlr
[TRLR_LENGTH
] = '\0';
933 /* Don't use _filtered; we can't deal with a QUIT out of
934 target_wait, and I think this might be called from there. */
935 fprintf_unfiltered (gdb_stdlog
, "Got ack %d \"%s%s\"\n",
936 HDR_GET_SEQ (hdr
), hdr
+ 1, trlr
);
939 /* If this ack is for the current packet, we're done. */
940 seq
= HDR_GET_SEQ (hdr
);
941 if (seq
== mips_send_seq
)
944 /* If this ack is for the last packet, resend the current
946 if ((seq
+ 1) % SEQ_MODULOS
== mips_send_seq
)
949 /* Otherwise this is a bad ack; ignore it. Increment the
950 garbage count to ensure that we do not stay in this loop
956 mips_error ("Remote did not acknowledge packet");
959 /* Receive and acknowledge a packet, returning the data in BUFF (which
960 should be DATA_MAXLEN + 1 bytes). The protocol documentation
961 implies that only the sender retransmits packets, so this code just
962 waits silently for a packet. It returns the length of the received
963 packet. If THROW_ERROR is nonzero, call error() on errors. If not,
964 don't print an error message and return -1. */
967 mips_receive_packet (char *buff
, int throw_error
, int timeout
)
972 unsigned char ack
[HDR_LENGTH
+ TRLR_LENGTH
+ 1];
979 unsigned char hdr
[HDR_LENGTH
];
980 unsigned char trlr
[TRLR_LENGTH
];
984 if (mips_receive_header (hdr
, &garbage
, ch
, timeout
) != 0)
987 mips_error ("Timed out waiting for remote packet");
994 /* An acknowledgement is probably a duplicate; ignore it. */
995 if (!HDR_IS_DATA (hdr
))
997 len
= HDR_GET_LEN (hdr
);
998 /* Check if the length is valid for an ACK, we may aswell
999 try and read the remainder of the packet: */
1002 /* Ignore the error condition, since we are going to
1003 ignore the packet anyway. */
1004 (void) mips_receive_trailer (trlr
, &garbage
, &ch
, timeout
);
1006 /* Don't use _filtered; we can't deal with a QUIT out of
1007 target_wait, and I think this might be called from there. */
1008 if (remote_debug
> 0)
1009 fprintf_unfiltered (gdb_stdlog
, "Ignoring unexpected ACK\n");
1013 len
= HDR_GET_LEN (hdr
);
1014 for (i
= 0; i
< len
; i
++)
1018 rch
= mips_readchar (timeout
);
1024 if (rch
== SERIAL_TIMEOUT
)
1027 mips_error ("Timed out waiting for remote packet");
1036 /* Don't use _filtered; we can't deal with a QUIT out of
1037 target_wait, and I think this might be called from there. */
1038 if (remote_debug
> 0)
1039 fprintf_unfiltered (gdb_stdlog
,
1040 "Got new SYN after %d chars (wanted %d)\n",
1045 err
= mips_receive_trailer (trlr
, &garbage
, &ch
, timeout
);
1049 mips_error ("Timed out waiting for packet");
1055 /* Don't use _filtered; we can't deal with a QUIT out of
1056 target_wait, and I think this might be called from there. */
1057 if (remote_debug
> 0)
1058 fprintf_unfiltered (gdb_stdlog
, "Got SYN when wanted trailer\n");
1062 /* If this is the wrong sequence number, ignore it. */
1063 if (HDR_GET_SEQ (hdr
) != mips_receive_seq
)
1065 /* Don't use _filtered; we can't deal with a QUIT out of
1066 target_wait, and I think this might be called from there. */
1067 if (remote_debug
> 0)
1068 fprintf_unfiltered (gdb_stdlog
,
1069 "Ignoring sequence number %d (want %d)\n",
1070 HDR_GET_SEQ (hdr
), mips_receive_seq
);
1074 if (mips_cksum (hdr
, buff
, len
) == TRLR_GET_CKSUM (trlr
))
1077 if (remote_debug
> 0)
1078 /* Don't use _filtered; we can't deal with a QUIT out of
1079 target_wait, and I think this might be called from there. */
1080 printf_unfiltered ("Bad checksum; data %d, trailer %d\n",
1081 mips_cksum (hdr
, buff
, len
),
1082 TRLR_GET_CKSUM (trlr
));
1084 /* The checksum failed. Send an acknowledgement for the
1085 previous packet to tell the remote to resend the packet. */
1086 ack
[HDR_INDX_SYN
] = HDR_SET_SYN (0, 0, mips_receive_seq
);
1087 ack
[HDR_INDX_TYPE_LEN
] = HDR_SET_TYPE_LEN (0, 0, mips_receive_seq
);
1088 ack
[HDR_INDX_LEN1
] = HDR_SET_LEN1 (0, 0, mips_receive_seq
);
1089 ack
[HDR_INDX_SEQ
] = HDR_SET_SEQ (0, 0, mips_receive_seq
);
1091 cksum
= mips_cksum (ack
, (unsigned char *) NULL
, 0);
1093 ack
[HDR_LENGTH
+ TRLR_INDX_CSUM1
] = TRLR_SET_CSUM1 (cksum
);
1094 ack
[HDR_LENGTH
+ TRLR_INDX_CSUM2
] = TRLR_SET_CSUM2 (cksum
);
1095 ack
[HDR_LENGTH
+ TRLR_INDX_CSUM3
] = TRLR_SET_CSUM3 (cksum
);
1097 if (remote_debug
> 0)
1099 ack
[HDR_LENGTH
+ TRLR_LENGTH
] = '\0';
1100 /* Don't use _filtered; we can't deal with a QUIT out of
1101 target_wait, and I think this might be called from there. */
1102 printf_unfiltered ("Writing ack %d \"%s\"\n", mips_receive_seq
,
1106 if (serial_write (mips_desc
, ack
, HDR_LENGTH
+ TRLR_LENGTH
) != 0)
1109 mips_error ("write to target failed: %s", safe_strerror (errno
));
1115 if (remote_debug
> 0)
1118 /* Don't use _filtered; we can't deal with a QUIT out of
1119 target_wait, and I think this might be called from there. */
1120 printf_unfiltered ("Got packet \"%s\"\n", buff
);
1123 /* We got the packet. Send an acknowledgement. */
1124 mips_receive_seq
= (mips_receive_seq
+ 1) % SEQ_MODULOS
;
1126 ack
[HDR_INDX_SYN
] = HDR_SET_SYN (0, 0, mips_receive_seq
);
1127 ack
[HDR_INDX_TYPE_LEN
] = HDR_SET_TYPE_LEN (0, 0, mips_receive_seq
);
1128 ack
[HDR_INDX_LEN1
] = HDR_SET_LEN1 (0, 0, mips_receive_seq
);
1129 ack
[HDR_INDX_SEQ
] = HDR_SET_SEQ (0, 0, mips_receive_seq
);
1131 cksum
= mips_cksum (ack
, (unsigned char *) NULL
, 0);
1133 ack
[HDR_LENGTH
+ TRLR_INDX_CSUM1
] = TRLR_SET_CSUM1 (cksum
);
1134 ack
[HDR_LENGTH
+ TRLR_INDX_CSUM2
] = TRLR_SET_CSUM2 (cksum
);
1135 ack
[HDR_LENGTH
+ TRLR_INDX_CSUM3
] = TRLR_SET_CSUM3 (cksum
);
1137 if (remote_debug
> 0)
1139 ack
[HDR_LENGTH
+ TRLR_LENGTH
] = '\0';
1140 /* Don't use _filtered; we can't deal with a QUIT out of
1141 target_wait, and I think this might be called from there. */
1142 printf_unfiltered ("Writing ack %d \"%s\"\n", mips_receive_seq
,
1146 if (serial_write (mips_desc
, ack
, HDR_LENGTH
+ TRLR_LENGTH
) != 0)
1149 mips_error ("write to target failed: %s", safe_strerror (errno
));
1157 /* Optionally send a request to the remote system and optionally wait
1158 for the reply. This implements the remote debugging protocol,
1159 which is built on top of the packet protocol defined above. Each
1160 request has an ADDR argument and a DATA argument. The following
1161 requests are defined:
1163 \0 don't send a request; just wait for a reply
1164 i read word from instruction space at ADDR
1165 d read word from data space at ADDR
1166 I write DATA to instruction space at ADDR
1167 D write DATA to data space at ADDR
1168 r read register number ADDR
1169 R set register number ADDR to value DATA
1170 c continue execution (if ADDR != 1, set pc to ADDR)
1171 s single step (if ADDR != 1, set pc to ADDR)
1173 The read requests return the value requested. The write requests
1174 return the previous value in the changed location. The execution
1175 requests return a UNIX wait value (the approximate signal which
1176 caused execution to stop is in the upper eight bits).
1178 If PERR is not NULL, this function waits for a reply. If an error
1179 occurs, it sets *PERR to 1 and sets errno according to what the
1180 target board reports. */
1183 mips_request (int cmd
,
1190 char myBuff
[DATA_MAXLEN
+ 1];
1195 unsigned long rresponse
;
1197 if (buff
== (char *) NULL
)
1202 if (mips_need_reply
)
1203 internal_error (__FILE__
, __LINE__
,
1204 _("mips_request: Trying to send command before reply"));
1205 sprintf (buff
, "0x0 %c 0x%s 0x%s", cmd
, paddr_nz (addr
), paddr_nz (data
));
1206 mips_send_packet (buff
, 1);
1207 mips_need_reply
= 1;
1210 if (perr
== (int *) NULL
)
1213 if (!mips_need_reply
)
1214 internal_error (__FILE__
, __LINE__
,
1215 _("mips_request: Trying to get reply before command"));
1217 mips_need_reply
= 0;
1219 len
= mips_receive_packet (buff
, 1, timeout
);
1222 if (sscanf (buff
, "0x%x %c 0x%x 0x%lx",
1223 &rpid
, &rcmd
, &rerrflg
, &rresponse
) != 4
1224 || (cmd
!= '\0' && rcmd
!= cmd
))
1225 mips_error ("Bad response from remote board");
1231 /* FIXME: This will returns MIPS errno numbers, which may or may
1232 not be the same as errno values used on other systems. If
1233 they stick to common errno values, they will be the same, but
1234 if they don't, they must be translated. */
1245 mips_initialize_cleanups (void *arg
)
1247 mips_initializing
= 0;
1251 mips_exit_cleanups (void *arg
)
1257 mips_send_command (const char *cmd
, int prompt
)
1259 serial_write (mips_desc
, cmd
, strlen (cmd
));
1263 mips_expect (mips_monitor_prompt
);
1266 /* Enter remote (dbx) debug mode: */
1268 mips_enter_debug (void)
1270 /* Reset the sequence numbers, ready for the new debug sequence: */
1272 mips_receive_seq
= 0;
1274 if (mips_monitor
!= MON_IDT
)
1275 mips_send_command ("debug\r", 0);
1276 else /* assume IDT monitor by default */
1277 mips_send_command ("db tty0\r", 0);
1280 serial_write (mips_desc
, "\r", sizeof "\r" - 1);
1282 /* We don't need to absorb any spurious characters here, since the
1283 mips_receive_header will eat up a reasonable number of characters
1284 whilst looking for the SYN, however this avoids the "garbage"
1285 being displayed to the user. */
1286 if (mips_monitor
!= MON_IDT
)
1290 char buff
[DATA_MAXLEN
+ 1];
1291 if (mips_receive_packet (buff
, 1, 3) < 0)
1292 mips_error ("Failed to initialize (didn't receive packet).");
1296 /* Exit remote (dbx) debug mode, returning to the monitor prompt: */
1298 mips_exit_debug (void)
1301 struct cleanup
*old_cleanups
= make_cleanup (mips_exit_cleanups
, NULL
);
1305 if (mips_monitor
!= MON_IDT
)
1307 /* The DDB (NEC) and MiniRISC (LSI) versions of PMON exit immediately,
1308 so we do not get a reply to this command: */
1309 mips_request ('x', 0, 0, NULL
, mips_receive_wait
, NULL
);
1310 mips_need_reply
= 0;
1311 if (!mips_expect (" break!"))
1315 mips_request ('x', 0, 0, &err
, mips_receive_wait
, NULL
);
1317 if (!mips_expect (mips_monitor_prompt
))
1320 do_cleanups (old_cleanups
);
1325 /* Initialize a new connection to the MIPS board, and make sure we are
1326 really connected. */
1329 mips_initialize (void)
1332 struct cleanup
*old_cleanups
= make_cleanup (mips_initialize_cleanups
, NULL
);
1335 /* What is this code doing here? I don't see any way it can happen, and
1336 it might mean mips_initializing didn't get cleared properly.
1337 So I'll make it a warning. */
1339 if (mips_initializing
)
1341 warning ("internal error: mips_initialize called twice");
1346 mips_initializing
= 1;
1348 /* At this point, the packit protocol isn't responding. We'll try getting
1349 into the monitor, and restarting the protocol. */
1351 /* Force the system into the monitor. After this we *should* be at
1352 the mips_monitor_prompt. */
1353 if (mips_monitor
!= MON_IDT
)
1354 j
= 0; /* start by checking if we are already at the prompt */
1356 j
= 1; /* start by sending a break */
1361 case 0: /* First, try sending a CR */
1362 serial_flush_input (mips_desc
);
1363 serial_write (mips_desc
, "\r", 1);
1365 case 1: /* First, try sending a break */
1366 serial_send_break (mips_desc
);
1368 case 2: /* Then, try a ^C */
1369 serial_write (mips_desc
, "\003", 1);
1371 case 3: /* Then, try escaping from download */
1373 if (mips_monitor
!= MON_IDT
)
1377 /* We shouldn't need to send multiple termination
1378 sequences, since the target performs line (or
1379 block) reads, and then processes those
1380 packets. In-case we were downloading a large packet
1381 we flush the output buffer before inserting a
1382 termination sequence. */
1383 serial_flush_output (mips_desc
);
1384 sprintf (tbuff
, "\r/E/E\r");
1385 serial_write (mips_desc
, tbuff
, 6);
1392 /* We are possibly in binary download mode, having
1393 aborted in the middle of an S-record. ^C won't
1394 work because of binary mode. The only reliable way
1395 out is to send enough termination packets (8 bytes)
1396 to fill up and then overflow the largest size
1397 S-record (255 bytes in this case). This amounts to
1401 mips_make_srec (srec
, '7', 0, NULL
, 0);
1403 for (i
= 1; i
<= 33; i
++)
1405 serial_write (mips_desc
, srec
, 8);
1407 if (serial_readchar (mips_desc
, 0) >= 0)
1408 break; /* Break immediatly if we get something from
1415 mips_error ("Failed to initialize.");
1418 if (mips_expect (mips_monitor_prompt
))
1422 if (mips_monitor
!= MON_IDT
)
1424 /* Sometimes PMON ignores the first few characters in the first
1425 command sent after a load. Sending a blank command gets
1427 mips_send_command ("\r", -1);
1429 /* Ensure the correct target state: */
1430 if (mips_monitor
!= MON_LSI
)
1431 mips_send_command ("set regsize 64\r", -1);
1432 mips_send_command ("set hostport tty0\r", -1);
1433 mips_send_command ("set brkcmd \"\"\r", -1);
1434 /* Delete all the current breakpoints: */
1435 mips_send_command ("db *\r", -1);
1436 /* NOTE: PMON does not have breakpoint support through the
1437 "debug" mode, only at the monitor command-line. */
1440 mips_enter_debug ();
1442 /* Clear all breakpoints: */
1443 if ((mips_monitor
== MON_IDT
1444 && mips_clear_breakpoint (-1, 0, BREAK_UNUSED
) == 0)
1445 || mips_monitor
== MON_LSI
)
1446 monitor_supports_breakpoints
= 1;
1448 monitor_supports_breakpoints
= 0;
1450 do_cleanups (old_cleanups
);
1452 /* If this doesn't call error, we have connected; we don't care if
1453 the request itself succeeds or fails. */
1455 mips_request ('r', 0, 0, &err
, mips_receive_wait
, NULL
);
1458 /* Open a connection to the remote board. */
1460 common_open (struct target_ops
*ops
, char *name
, int from_tty
,
1461 enum mips_monitor_type new_monitor
,
1462 const char *new_monitor_prompt
)
1465 char *serial_port_name
;
1466 char *remote_name
= 0;
1467 char *local_name
= 0;
1472 "To open a MIPS remote debugging connection, you need to specify what serial\n\
1473 device is attached to the target board (e.g., /dev/ttya).\n"
1474 "If you want to use TFTP to download to the board, specify the name of a\n"
1475 "temporary file to be used by GDB for downloads as the second argument.\n"
1476 "This filename must be in the form host:filename, where host is the name\n"
1477 "of the host running the TFTP server, and the file must be readable by the\n"
1478 "world. If the local name of the temporary file differs from the name as\n"
1479 "seen from the board via TFTP, specify that name as the third parameter.\n");
1481 /* Parse the serial port name, the optional TFTP name, and the
1482 optional local TFTP name. */
1483 argv
= gdb_buildargv (name
);
1484 make_cleanup_freeargv (argv
);
1486 serial_port_name
= xstrdup (argv
[0]);
1487 if (argv
[1]) /* remote TFTP name specified? */
1489 remote_name
= argv
[1];
1490 if (argv
[2]) /* local TFTP filename specified? */
1491 local_name
= argv
[2];
1494 target_preopen (from_tty
);
1497 unpush_target (current_ops
);
1499 /* Open and initialize the serial port. */
1500 mips_desc
= serial_open (serial_port_name
);
1501 if (mips_desc
== NULL
)
1502 perror_with_name (serial_port_name
);
1504 if (baud_rate
!= -1)
1506 if (serial_setbaudrate (mips_desc
, baud_rate
))
1508 serial_close (mips_desc
);
1509 perror_with_name (serial_port_name
);
1513 serial_raw (mips_desc
);
1515 /* Open and initialize the optional download port. If it is in the form
1516 hostname#portnumber, it's a UDP socket. If it is in the form
1517 hostname:filename, assume it's the TFTP filename that must be
1518 passed to the DDB board to tell it where to get the load file. */
1521 if (strchr (remote_name
, '#'))
1523 udp_desc
= serial_open (remote_name
);
1525 perror_with_name ("Unable to open UDP port");
1530 /* Save the remote and local names of the TFTP temp file. If
1531 the user didn't specify a local name, assume it's the same
1532 as the part of the remote name after the "host:". */
1536 xfree (tftp_localname
);
1537 if (local_name
== NULL
)
1538 if ((local_name
= strchr (remote_name
, ':')) != NULL
)
1539 local_name
++; /* skip over the colon */
1540 if (local_name
== NULL
)
1541 local_name
= remote_name
; /* local name same as remote name */
1542 tftp_name
= xstrdup (remote_name
);
1543 tftp_localname
= xstrdup (local_name
);
1551 /* Reset the expected monitor prompt if it's never been set before. */
1552 if (mips_monitor_prompt
== NULL
)
1553 mips_monitor_prompt
= xstrdup (new_monitor_prompt
);
1554 mips_monitor
= new_monitor
;
1559 printf_unfiltered ("Remote MIPS debugging using %s\n", serial_port_name
);
1561 /* Switch to using remote target now. */
1564 /* FIXME: Should we call start_remote here? */
1566 /* Try to figure out the processor model if possible. */
1567 deprecated_mips_set_processor_regs_hack ();
1569 /* This is really the job of start_remote however, that makes an
1570 assumption that the target is about to print out a status message
1571 of some sort. That doesn't happen here (in fact, it may not be
1572 possible to get the monitor to send the appropriate packet). */
1574 reinit_frame_cache ();
1575 registers_changed ();
1576 stop_pc
= read_pc ();
1577 print_stack_frame (get_selected_frame (NULL
), 0, SRC_AND_LOC
);
1578 xfree (serial_port_name
);
1582 mips_open (char *name
, int from_tty
)
1584 const char *monitor_prompt
= NULL
;
1585 if (gdbarch_bfd_arch_info (target_gdbarch
) != NULL
1586 && gdbarch_bfd_arch_info (target_gdbarch
)->arch
== bfd_arch_mips
)
1588 switch (gdbarch_bfd_arch_info (target_gdbarch
)->mach
)
1590 case bfd_mach_mips4100
:
1591 case bfd_mach_mips4300
:
1592 case bfd_mach_mips4600
:
1593 case bfd_mach_mips4650
:
1594 case bfd_mach_mips5000
:
1595 monitor_prompt
= "<RISQ> ";
1599 if (monitor_prompt
== NULL
)
1600 monitor_prompt
= "<IDT>";
1601 common_open (&mips_ops
, name
, from_tty
, MON_IDT
, monitor_prompt
);
1605 pmon_open (char *name
, int from_tty
)
1607 common_open (&pmon_ops
, name
, from_tty
, MON_PMON
, "PMON> ");
1611 ddb_open (char *name
, int from_tty
)
1613 common_open (&ddb_ops
, name
, from_tty
, MON_DDB
, "NEC010>");
1617 lsi_open (char *name
, int from_tty
)
1621 /* Clear the LSI breakpoint table. */
1622 for (i
= 0; i
< MAX_LSI_BREAKPOINTS
; i
++)
1623 lsi_breakpoints
[i
].type
= BREAK_UNUSED
;
1625 common_open (&lsi_ops
, name
, from_tty
, MON_LSI
, "PMON> ");
1628 /* Close a connection to the remote board. */
1631 mips_close (int quitting
)
1635 /* Get the board out of remote debugging mode. */
1636 (void) mips_exit_debug ();
1642 /* Detach from the remote board. */
1645 mips_detach (struct target_ops
*ops
, char *args
, int from_tty
)
1648 error ("Argument given to \"detach\" when remotely debugging.");
1655 printf_unfiltered ("Ending remote MIPS debugging.\n");
1658 /* Tell the target board to resume. This does not wait for a reply
1659 from the board, except in the case of single-stepping on LSI boards,
1660 where PMON does return a reply. */
1663 mips_resume (struct target_ops
*ops
,
1664 ptid_t ptid
, int step
, enum target_signal siggnal
)
1668 /* LSI PMON requires returns a reply packet "0x1 s 0x0 0x57f" after
1669 a single step, so we wait for that. */
1670 mips_request (step
? 's' : 'c', 1, siggnal
,
1671 mips_monitor
== MON_LSI
&& step
? &err
: (int *) NULL
,
1672 mips_receive_wait
, NULL
);
1675 /* Return the signal corresponding to SIG, where SIG is the number which
1676 the MIPS protocol uses for the signal. */
1677 static enum target_signal
1678 mips_signal_from_protocol (int sig
)
1680 /* We allow a few more signals than the IDT board actually returns, on
1681 the theory that there is at least *some* hope that perhaps the numbering
1682 for these signals is widely agreed upon. */
1685 return TARGET_SIGNAL_UNKNOWN
;
1687 /* Don't want to use target_signal_from_host because we are converting
1688 from MIPS signal numbers, not host ones. Our internal numbers
1689 match the MIPS numbers for the signals the board can return, which
1690 are: SIGINT, SIGSEGV, SIGBUS, SIGILL, SIGFPE, SIGTRAP. */
1691 return (enum target_signal
) sig
;
1694 /* Wait until the remote stops, and return a wait status. */
1697 mips_wait (struct target_ops
*ops
,
1698 ptid_t ptid
, struct target_waitstatus
*status
)
1702 char buff
[DATA_MAXLEN
];
1708 interrupt_count
= 0;
1711 /* If we have not sent a single step or continue command, then the
1712 board is waiting for us to do something. Return a status
1713 indicating that it is stopped. */
1714 if (!mips_need_reply
)
1716 status
->kind
= TARGET_WAITKIND_STOPPED
;
1717 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1718 return inferior_ptid
;
1721 /* No timeout; we sit here as long as the program continues to execute. */
1723 rstatus
= mips_request ('\000', 0, 0, &err
, -1, buff
);
1726 mips_error ("Remote failure: %s", safe_strerror (errno
));
1728 /* On returning from a continue, the PMON monitor seems to start
1729 echoing back the messages we send prior to sending back the
1730 ACK. The code can cope with this, but to try and avoid the
1731 unnecessary serial traffic, and "spurious" characters displayed
1732 to the user, we cheat and reset the debug protocol. The problems
1733 seems to be caused by a check on the number of arguments, and the
1734 command length, within the monitor causing it to echo the command
1736 if (mips_monitor
== MON_PMON
)
1739 mips_enter_debug ();
1742 /* See if we got back extended status. If so, pick out the pc, fp, sp, etc... */
1744 nfields
= sscanf (buff
, "0x%*x %*c 0x%*x 0x%*x 0x%x 0x%x 0x%x 0x%*x %s",
1745 &rpc
, &rfp
, &rsp
, flags
);
1748 struct regcache
*regcache
= get_current_regcache ();
1749 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1750 char buf
[MAX_REGISTER_SIZE
];
1752 store_unsigned_integer (buf
,
1754 (gdbarch
, gdbarch_pc_regnum (gdbarch
)), rpc
);
1755 regcache_raw_supply (regcache
, gdbarch_pc_regnum (gdbarch
), buf
);
1757 store_unsigned_integer
1758 (buf
, register_size (gdbarch
, gdbarch_pc_regnum (gdbarch
)), rfp
);
1759 regcache_raw_supply (regcache
, 30, buf
); /* This register they are avoiding and so it is unnamed */
1761 store_unsigned_integer (buf
, register_size (gdbarch
,
1762 gdbarch_sp_regnum (gdbarch
)), rsp
);
1763 regcache_raw_supply (regcache
, gdbarch_sp_regnum (gdbarch
), buf
);
1765 store_unsigned_integer (buf
,
1766 register_size (gdbarch
,
1767 gdbarch_deprecated_fp_regnum
1770 regcache_raw_supply (regcache
,
1771 gdbarch_deprecated_fp_regnum (gdbarch
), buf
);
1777 for (i
= 0; i
<= 2; i
++)
1778 if (flags
[i
] == 'r' || flags
[i
] == 'w')
1780 else if (flags
[i
] == '\000')
1785 if (strcmp (target_shortname
, "lsi") == 0)
1788 /* If this is an LSI PMON target, see if we just hit a hardrdware watchpoint.
1789 Right now, PMON doesn't give us enough information to determine which
1790 breakpoint we hit. So we have to look up the PC in our own table
1791 of breakpoints, and if found, assume it's just a normal instruction
1792 fetch breakpoint, not a data watchpoint. FIXME when PMON
1793 provides some way to tell us what type of breakpoint it is. */
1795 CORE_ADDR pc
= read_pc ();
1798 for (i
= 0; i
< MAX_LSI_BREAKPOINTS
; i
++)
1800 if (lsi_breakpoints
[i
].addr
== pc
1801 && lsi_breakpoints
[i
].type
== BREAK_FETCH
)
1808 /* If a data breakpoint was hit, PMON returns the following packet:
1810 The return packet from an ordinary breakpoint doesn't have the
1811 extra 0x01 field tacked onto the end. */
1812 if (nfields
== 1 && rpc
== 1)
1817 /* NOTE: The following (sig) numbers are defined by PMON:
1818 SPP_SIGTRAP 5 breakpoint
1826 /* Translate a MIPS waitstatus. We use constants here rather than WTERMSIG
1827 and so on, because the constants we want here are determined by the
1828 MIPS protocol and have nothing to do with what host we are running on. */
1829 if ((rstatus
& 0xff) == 0)
1831 status
->kind
= TARGET_WAITKIND_EXITED
;
1832 status
->value
.integer
= (((rstatus
) >> 8) & 0xff);
1834 else if ((rstatus
& 0xff) == 0x7f)
1836 status
->kind
= TARGET_WAITKIND_STOPPED
;
1837 status
->value
.sig
= mips_signal_from_protocol (((rstatus
) >> 8) & 0xff);
1839 /* If the stop PC is in the _exit function, assume
1840 we hit the 'break 0x3ff' instruction in _exit, so this
1841 is not a normal breakpoint. */
1842 if (strcmp (target_shortname
, "lsi") == 0)
1845 CORE_ADDR func_start
;
1846 CORE_ADDR pc
= read_pc ();
1848 find_pc_partial_function (pc
, &func_name
, &func_start
, NULL
);
1849 if (func_name
!= NULL
&& strcmp (func_name
, "_exit") == 0
1850 && func_start
== pc
)
1851 status
->kind
= TARGET_WAITKIND_EXITED
;
1856 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
1857 status
->value
.sig
= mips_signal_from_protocol (rstatus
& 0x7f);
1860 return inferior_ptid
;
1863 /* We have to map between the register numbers used by gdb and the
1864 register numbers used by the debugging protocol. */
1866 #define REGNO_OFFSET 96
1869 mips_map_regno (struct gdbarch
*gdbarch
, int regno
)
1873 if (regno
>= mips_regnum (gdbarch
)->fp0
1874 && regno
< mips_regnum (gdbarch
)->fp0
+ 32)
1875 return regno
- mips_regnum (gdbarch
)->fp0
+ 32;
1876 else if (regno
== mips_regnum (gdbarch
)->pc
)
1877 return REGNO_OFFSET
+ 0;
1878 else if (regno
== mips_regnum (gdbarch
)->cause
)
1879 return REGNO_OFFSET
+ 1;
1880 else if (regno
== mips_regnum (gdbarch
)->hi
)
1881 return REGNO_OFFSET
+ 2;
1882 else if (regno
== mips_regnum (gdbarch
)->lo
)
1883 return REGNO_OFFSET
+ 3;
1884 else if (regno
== mips_regnum (gdbarch
)->fp_control_status
)
1885 return REGNO_OFFSET
+ 4;
1886 else if (regno
== mips_regnum (gdbarch
)->fp_implementation_revision
)
1887 return REGNO_OFFSET
+ 5;
1889 /* FIXME: Is there a way to get the status register? */
1893 /* Fetch the remote registers. */
1896 mips_fetch_registers (struct target_ops
*ops
,
1897 struct regcache
*regcache
, int regno
)
1899 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1900 unsigned LONGEST val
;
1905 for (regno
= 0; regno
< gdbarch_num_regs (gdbarch
); regno
++)
1906 mips_fetch_registers (ops
, regcache
, regno
);
1910 if (regno
== gdbarch_deprecated_fp_regnum (gdbarch
)
1911 || regno
== MIPS_ZERO_REGNUM
)
1912 /* gdbarch_deprecated_fp_regnum on the mips is a hack which is just
1913 supposed to read zero (see also mips-nat.c). */
1917 /* If PMON doesn't support this register, don't waste serial
1918 bandwidth trying to read it. */
1919 int pmon_reg
= mips_map_regno (gdbarch
, regno
);
1920 if (regno
!= 0 && pmon_reg
== 0)
1924 /* Unfortunately the PMON version in the Vr4300 board has been
1925 compiled without the 64bit register access commands. This
1926 means we cannot get hold of the full register width. */
1927 if (mips_monitor
== MON_DDB
)
1928 val
= (unsigned) mips_request ('t', pmon_reg
, 0,
1929 &err
, mips_receive_wait
, NULL
);
1931 val
= mips_request ('r', pmon_reg
, 0,
1932 &err
, mips_receive_wait
, NULL
);
1934 mips_error ("Can't read register %d: %s", regno
,
1935 safe_strerror (errno
));
1940 char buf
[MAX_REGISTER_SIZE
];
1942 /* We got the number the register holds, but gdb expects to see a
1943 value in the target byte ordering. */
1944 store_unsigned_integer (buf
, register_size (gdbarch
, regno
), val
);
1945 regcache_raw_supply (regcache
, regno
, buf
);
1949 /* Prepare to store registers. The MIPS protocol can store individual
1950 registers, so this function doesn't have to do anything. */
1953 mips_prepare_to_store (struct regcache
*regcache
)
1957 /* Store remote register(s). */
1960 mips_store_registers (struct target_ops
*ops
,
1961 struct regcache
*regcache
, int regno
)
1963 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1969 for (regno
= 0; regno
< gdbarch_num_regs (gdbarch
); regno
++)
1970 mips_store_registers (ops
, regcache
, regno
);
1974 regcache_cooked_read_unsigned (regcache
, regno
, &val
);
1975 mips_request ('R', mips_map_regno (gdbarch
, regno
), val
,
1976 &err
, mips_receive_wait
, NULL
);
1978 mips_error ("Can't write register %d: %s", regno
, safe_strerror (errno
));
1981 /* Fetch a word from the target board. */
1984 mips_fetch_word (CORE_ADDR addr
)
1989 val
= mips_request ('d', addr
, 0, &err
, mips_receive_wait
, NULL
);
1992 /* Data space failed; try instruction space. */
1993 val
= mips_request ('i', addr
, 0, &err
,
1994 mips_receive_wait
, NULL
);
1996 mips_error ("Can't read address 0x%s: %s",
1997 paddr_nz (addr
), safe_strerror (errno
));
2002 /* Store a word to the target board. Returns errno code or zero for
2003 success. If OLD_CONTENTS is non-NULL, put the old contents of that
2004 memory location there. */
2006 /* FIXME! make sure only 32-bit quantities get stored! */
2008 mips_store_word (CORE_ADDR addr
, unsigned int val
, char *old_contents
)
2011 unsigned int oldcontents
;
2013 oldcontents
= mips_request ('D', addr
, val
, &err
,
2014 mips_receive_wait
, NULL
);
2017 /* Data space failed; try instruction space. */
2018 oldcontents
= mips_request ('I', addr
, val
, &err
,
2019 mips_receive_wait
, NULL
);
2023 if (old_contents
!= NULL
)
2024 store_unsigned_integer (old_contents
, 4, oldcontents
);
2028 /* Read or write LEN bytes from inferior memory at MEMADDR,
2029 transferring to or from debugger address MYADDR. Write to inferior
2030 if SHOULD_WRITE is nonzero. Returns length of data written or
2031 read; 0 for error. Note that protocol gives us the correct value
2032 for a longword, since it transfers values in ASCII. We want the
2033 byte values, so we have to swap the longword values. */
2035 static int mask_address_p
= 1;
2038 mips_xfer_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
, int write
,
2039 struct mem_attrib
*attrib
, struct target_ops
*target
)
2047 /* PMON targets do not cope well with 64 bit addresses. Mask the
2048 value down to 32 bits. */
2050 memaddr
&= (CORE_ADDR
) 0xffffffff;
2052 /* Round starting address down to longword boundary. */
2053 addr
= memaddr
& ~3;
2054 /* Round ending address up; get number of longwords that makes. */
2055 count
= (((memaddr
+ len
) - addr
) + 3) / 4;
2056 /* Allocate buffer of that many longwords. */
2057 buffer
= alloca (count
* 4);
2061 /* Fill start and end extra bytes of buffer with existing data. */
2062 if (addr
!= memaddr
|| len
< 4)
2064 /* Need part of initial word -- fetch it. */
2065 store_unsigned_integer (&buffer
[0], 4, mips_fetch_word (addr
));
2070 /* Need part of last word -- fetch it. FIXME: we do this even
2071 if we don't need it. */
2072 store_unsigned_integer (&buffer
[(count
- 1) * 4], 4,
2073 mips_fetch_word (addr
+ (count
- 1) * 4));
2076 /* Copy data to be written over corresponding part of buffer */
2078 memcpy ((char *) buffer
+ (memaddr
& 3), myaddr
, len
);
2080 /* Write the entire buffer. */
2082 for (i
= 0; i
< count
; i
++, addr
+= 4)
2084 status
= mips_store_word (addr
,
2085 extract_unsigned_integer (&buffer
[i
* 4], 4),
2087 /* Report each kilobyte (we download 32-bit words at a time) */
2090 printf_unfiltered ("*");
2091 gdb_flush (gdb_stdout
);
2098 /* FIXME: Do we want a QUIT here? */
2101 printf_unfiltered ("\n");
2105 /* Read all the longwords */
2106 for (i
= 0; i
< count
; i
++, addr
+= 4)
2108 store_unsigned_integer (&buffer
[i
* 4], 4, mips_fetch_word (addr
));
2112 /* Copy appropriate bytes out of the buffer. */
2113 memcpy (myaddr
, buffer
+ (memaddr
& 3), len
);
2118 /* Print info on this target. */
2121 mips_files_info (struct target_ops
*ignore
)
2123 printf_unfiltered ("Debugging a MIPS board over a serial line.\n");
2126 /* Kill the process running on the board. This will actually only
2127 work if we are doing remote debugging over the console input. I
2128 think that if IDT/sim had the remote debug interrupt enabled on the
2129 right port, we could interrupt the process with a break signal. */
2134 if (!mips_wait_flag
)
2139 if (interrupt_count
>= 2)
2141 interrupt_count
= 0;
2143 target_terminal_ours ();
2145 if (query (_("Interrupted while waiting for the program.\n\
2146 Give up (and stop debugging it)? ")))
2148 /* Clean up in such a way that mips_close won't try to talk to the
2149 board (it almost surely won't work since we weren't able to talk to
2154 printf_unfiltered ("Ending remote MIPS debugging.\n");
2155 target_mourn_inferior ();
2157 deprecated_throw_reason (RETURN_QUIT
);
2160 target_terminal_inferior ();
2163 if (remote_debug
> 0)
2164 printf_unfiltered ("Sending break\n");
2166 serial_send_break (mips_desc
);
2175 serial_write (mips_desc
, &cc
, 1);
2177 target_mourn_inferior ();
2182 /* Start running on the target board. */
2185 mips_create_inferior (char *execfile
, char *args
, char **env
, int from_tty
)
2192 Can't pass arguments to remote MIPS board; arguments ignored.");
2193 /* And don't try to use them on the next "run" command. */
2194 execute_command ("set args", 0);
2197 if (execfile
== 0 || exec_bfd
== 0)
2198 error ("No executable file specified");
2200 entry_pt
= (CORE_ADDR
) bfd_get_start_address (exec_bfd
);
2202 init_wait_for_inferior ();
2204 /* FIXME: Should we set inferior_ptid here? */
2206 write_pc (entry_pt
);
2209 /* Clean up after a process. Actually nothing to do. */
2212 mips_mourn_inferior (void)
2214 if (current_ops
!= NULL
)
2215 unpush_target (current_ops
);
2216 generic_mourn_inferior ();
2219 /* We can write a breakpoint and read the shadow contents in one
2222 /* Insert a breakpoint. On targets that don't have built-in
2223 breakpoint support, we read the contents of the target location and
2224 stash it, then overwrite it with a breakpoint instruction. ADDR is
2225 the target location in the target machine. BPT is the breakpoint
2226 being inserted or removed, which contains memory for saving the
2230 mips_insert_breakpoint (struct bp_target_info
*bp_tgt
)
2232 if (monitor_supports_breakpoints
)
2233 return mips_set_breakpoint (bp_tgt
->placed_address
, MIPS_INSN32_SIZE
,
2236 return memory_insert_breakpoint (bp_tgt
);
2240 mips_remove_breakpoint (struct bp_target_info
*bp_tgt
)
2242 if (monitor_supports_breakpoints
)
2243 return mips_clear_breakpoint (bp_tgt
->placed_address
, MIPS_INSN32_SIZE
,
2246 return memory_remove_breakpoint (bp_tgt
);
2249 /* Tell whether this target can support a hardware breakpoint. CNT
2250 is the number of hardware breakpoints already installed. This
2251 implements the TARGET_CAN_USE_HARDWARE_WATCHPOINT macro. */
2254 mips_can_use_watchpoint (int type
, int cnt
, int othertype
)
2256 return cnt
< MAX_LSI_BREAKPOINTS
&& strcmp (target_shortname
, "lsi") == 0;
2260 /* Compute a don't care mask for the region bounding ADDR and ADDR + LEN - 1.
2261 This is used for memory ref breakpoints. */
2263 static unsigned long
2264 calculate_mask (CORE_ADDR addr
, int len
)
2269 mask
= addr
^ (addr
+ len
- 1);
2271 for (i
= 32; i
>= 0; i
--)
2277 mask
= (unsigned long) 0xffffffff >> i
;
2283 /* Set a data watchpoint. ADDR and LEN should be obvious. TYPE is 0
2284 for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write
2288 mips_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
2290 if (mips_set_breakpoint (addr
, len
, type
))
2297 mips_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
2299 if (mips_clear_breakpoint (addr
, len
, type
))
2306 mips_stopped_by_watchpoint (void)
2308 return hit_watchpoint
;
2312 /* Insert a breakpoint. */
2315 mips_set_breakpoint (CORE_ADDR addr
, int len
, enum break_type type
)
2317 return mips_common_breakpoint (1, addr
, len
, type
);
2321 /* Clear a breakpoint. */
2324 mips_clear_breakpoint (CORE_ADDR addr
, int len
, enum break_type type
)
2326 return mips_common_breakpoint (0, addr
, len
, type
);
2330 /* Check the error code from the return packet for an LSI breakpoint
2331 command. If there's no error, just return 0. If it's a warning,
2332 print the warning text and return 0. If it's an error, print
2333 the error text and return 1. <ADDR> is the address of the breakpoint
2334 that was being set. <RERRFLG> is the error code returned by PMON.
2335 This is a helper function for mips_common_breakpoint. */
2338 mips_check_lsi_error (CORE_ADDR addr
, int rerrflg
)
2340 struct lsi_error
*err
;
2341 char *saddr
= paddr_nz (addr
); /* printable address string */
2343 if (rerrflg
== 0) /* no error */
2346 /* Warnings can be ORed together, so check them all. */
2347 if (rerrflg
& W_WARN
)
2349 if (monitor_warnings
)
2352 for (err
= lsi_warning_table
; err
->code
!= 0; err
++)
2354 if ((err
->code
& rerrflg
) == err
->code
)
2357 fprintf_unfiltered (gdb_stderr
, "\
2358 mips_common_breakpoint (0x%s): Warning: %s\n",
2364 fprintf_unfiltered (gdb_stderr
, "\
2365 mips_common_breakpoint (0x%s): Unknown warning: 0x%x\n",
2372 /* Errors are unique, i.e. can't be ORed together. */
2373 for (err
= lsi_error_table
; err
->code
!= 0; err
++)
2375 if ((err
->code
& rerrflg
) == err
->code
)
2377 fprintf_unfiltered (gdb_stderr
, "\
2378 mips_common_breakpoint (0x%s): Error: %s\n",
2384 fprintf_unfiltered (gdb_stderr
, "\
2385 mips_common_breakpoint (0x%s): Unknown error: 0x%x\n",
2392 /* This routine sends a breakpoint command to the remote target.
2394 <SET> is 1 if setting a breakpoint, or 0 if clearing a breakpoint.
2395 <ADDR> is the address of the breakpoint.
2396 <LEN> the length of the region to break on.
2397 <TYPE> is the type of breakpoint:
2398 0 = write (BREAK_WRITE)
2399 1 = read (BREAK_READ)
2400 2 = read/write (BREAK_ACCESS)
2401 3 = instruction fetch (BREAK_FETCH)
2403 Return 0 if successful; otherwise 1. */
2406 mips_common_breakpoint (int set
, CORE_ADDR addr
, int len
, enum break_type type
)
2408 char buf
[DATA_MAXLEN
+ 1];
2410 int rpid
, rerrflg
, rresponse
, rlen
;
2413 addr
= gdbarch_addr_bits_remove (target_gdbarch
, addr
);
2415 if (mips_monitor
== MON_LSI
)
2417 if (set
== 0) /* clear breakpoint */
2419 /* The LSI PMON "clear breakpoint" has this form:
2420 <pid> 'b' <bptn> 0x0
2422 <pid> 'b' 0x0 <code>
2424 <bptn> is a breakpoint number returned by an earlier 'B' command.
2425 Possible return codes: OK, E_BPT. */
2429 /* Search for the breakpoint in the table. */
2430 for (i
= 0; i
< MAX_LSI_BREAKPOINTS
; i
++)
2431 if (lsi_breakpoints
[i
].type
== type
2432 && lsi_breakpoints
[i
].addr
== addr
2433 && lsi_breakpoints
[i
].len
== len
)
2436 /* Clear the table entry and tell PMON to clear the breakpoint. */
2437 if (i
== MAX_LSI_BREAKPOINTS
)
2440 mips_common_breakpoint: Attempt to clear bogus breakpoint at %s\n",
2445 lsi_breakpoints
[i
].type
= BREAK_UNUSED
;
2446 sprintf (buf
, "0x0 b 0x%x 0x0", i
);
2447 mips_send_packet (buf
, 1);
2449 rlen
= mips_receive_packet (buf
, 1, mips_receive_wait
);
2452 nfields
= sscanf (buf
, "0x%x b 0x0 0x%x", &rpid
, &rerrflg
);
2455 mips_common_breakpoint: Bad response from remote board: %s",
2458 return (mips_check_lsi_error (addr
, rerrflg
));
2461 /* set a breakpoint */
2463 /* The LSI PMON "set breakpoint" command has this form:
2464 <pid> 'B' <addr> 0x0
2466 <pid> 'B' <bptn> <code>
2468 The "set data breakpoint" command has this form:
2470 <pid> 'A' <addr1> <type> [<addr2> [<value>]]
2472 where: type= "0x1" = read
2474 "0x3" = access (read or write)
2476 The reply returns two values:
2477 bptn - a breakpoint number, which is a small integer with
2478 possible values of zero through 255.
2479 code - an error return code, a value of zero indicates a
2480 succesful completion, other values indicate various
2481 errors and warnings.
2483 Possible return codes: OK, W_QAL, E_QAL, E_OUT, E_NON.
2487 if (type
== BREAK_FETCH
) /* instruction breakpoint */
2490 sprintf (buf
, "0x0 B 0x%s 0x0", paddr_nz (addr
));
2496 sprintf (buf
, "0x0 A 0x%s 0x%x 0x%s", paddr_nz (addr
),
2497 type
== BREAK_READ
? 1 : (type
== BREAK_WRITE
? 2 : 3),
2498 paddr_nz (addr
+ len
- 1));
2500 mips_send_packet (buf
, 1);
2502 rlen
= mips_receive_packet (buf
, 1, mips_receive_wait
);
2505 nfields
= sscanf (buf
, "0x%x %c 0x%x 0x%x",
2506 &rpid
, &rcmd
, &rresponse
, &rerrflg
);
2507 if (nfields
!= 4 || rcmd
!= cmd
|| rresponse
> 255)
2509 mips_common_breakpoint: Bad response from remote board: %s",
2513 if (mips_check_lsi_error (addr
, rerrflg
))
2516 /* rresponse contains PMON's breakpoint number. Record the
2517 information for this breakpoint so we can clear it later. */
2518 lsi_breakpoints
[rresponse
].type
= type
;
2519 lsi_breakpoints
[rresponse
].addr
= addr
;
2520 lsi_breakpoints
[rresponse
].len
= len
;
2527 /* On non-LSI targets, the breakpoint command has this form:
2528 0x0 <CMD> <ADDR> <MASK> <FLAGS>
2529 <MASK> is a don't care mask for addresses.
2530 <FLAGS> is any combination of `r', `w', or `f' for read/write/fetch.
2534 mask
= calculate_mask (addr
, len
);
2537 if (set
) /* set a breakpoint */
2542 case BREAK_WRITE
: /* write */
2545 case BREAK_READ
: /* read */
2548 case BREAK_ACCESS
: /* read/write */
2551 case BREAK_FETCH
: /* fetch */
2555 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
2559 sprintf (buf
, "0x0 B 0x%s 0x%s %s", paddr_nz (addr
),
2560 paddr_nz (mask
), flags
);
2565 sprintf (buf
, "0x0 b 0x%s", paddr_nz (addr
));
2568 mips_send_packet (buf
, 1);
2570 rlen
= mips_receive_packet (buf
, 1, mips_receive_wait
);
2573 nfields
= sscanf (buf
, "0x%x %c 0x%x 0x%x",
2574 &rpid
, &rcmd
, &rerrflg
, &rresponse
);
2576 if (nfields
!= 4 || rcmd
!= cmd
)
2578 mips_common_breakpoint: Bad response from remote board: %s",
2583 /* Ddb returns "0x0 b 0x16 0x0\000", whereas
2584 Cogent returns "0x0 b 0xffffffff 0x16\000": */
2585 if (mips_monitor
== MON_DDB
)
2586 rresponse
= rerrflg
;
2587 if (rresponse
!= 22) /* invalid argument */
2588 fprintf_unfiltered (gdb_stderr
, "\
2589 mips_common_breakpoint (0x%s): Got error: 0x%x\n",
2590 paddr_nz (addr
), rresponse
);
2598 send_srec (char *srec
, int len
, CORE_ADDR addr
)
2604 serial_write (mips_desc
, srec
, len
);
2606 ch
= mips_readchar (remote_timeout
);
2610 case SERIAL_TIMEOUT
:
2611 error ("Timeout during download.");
2615 case 0x15: /* NACK */
2616 fprintf_unfiltered (gdb_stderr
, "Download got a NACK at byte 0x%s! Retrying.\n", paddr_nz (addr
));
2619 error ("Download got unexpected ack char: 0x%x, retrying.\n", ch
);
2624 /* Download a binary file by converting it to S records. */
2627 mips_load_srec (char *args
)
2631 char *buffer
, srec
[1024];
2633 unsigned int srec_frame
= 200;
2635 static int hashmark
= 1;
2637 buffer
= alloca (srec_frame
* 2 + 256);
2639 abfd
= bfd_openr (args
, 0);
2642 printf_filtered ("Unable to open file %s\n", args
);
2646 if (bfd_check_format (abfd
, bfd_object
) == 0)
2648 printf_filtered ("File is not an object file\n");
2652 /* This actually causes a download in the IDT binary format: */
2653 mips_send_command (LOAD_CMD
, 0);
2655 for (s
= abfd
->sections
; s
; s
= s
->next
)
2657 if (s
->flags
& SEC_LOAD
)
2659 unsigned int numbytes
;
2661 /* FIXME! vma too small????? */
2662 printf_filtered ("%s\t: 0x%4lx .. 0x%4lx ", s
->name
,
2664 (long) (s
->vma
+ bfd_get_section_size (s
)));
2665 gdb_flush (gdb_stdout
);
2667 for (i
= 0; i
< bfd_get_section_size (s
); i
+= numbytes
)
2669 numbytes
= min (srec_frame
, bfd_get_section_size (s
) - i
);
2671 bfd_get_section_contents (abfd
, s
, buffer
, i
, numbytes
);
2673 reclen
= mips_make_srec (srec
, '3', s
->vma
+ i
,
2675 send_srec (srec
, reclen
, s
->vma
+ i
);
2677 if (deprecated_ui_load_progress_hook
)
2678 deprecated_ui_load_progress_hook (s
->name
, i
);
2682 putchar_unfiltered ('#');
2683 gdb_flush (gdb_stdout
);
2686 } /* Per-packet (or S-record) loop */
2688 putchar_unfiltered ('\n');
2689 } /* Loadable sections */
2692 putchar_unfiltered ('\n');
2694 /* Write a type 7 terminator record. no data for a type 7, and there
2695 is no data, so len is 0. */
2697 reclen
= mips_make_srec (srec
, '7', abfd
->start_address
, NULL
, 0);
2699 send_srec (srec
, reclen
, abfd
->start_address
);
2701 serial_flush_input (mips_desc
);
2705 * mips_make_srec -- make an srecord. This writes each line, one at a
2706 * time, each with it's own header and trailer line.
2707 * An srecord looks like this:
2709 * byte count-+ address
2710 * start ---+ | | data +- checksum
2712 * S01000006F6B692D746573742E73726563E4
2713 * S315000448600000000000000000FC00005900000000E9
2714 * S31A0004000023C1400037DE00F023604000377B009020825000348D
2715 * S30B0004485A0000000000004E
2718 * S<type><length><address><data><checksum>
2722 * is the number of bytes following upto the checksum. Note that
2723 * this is not the number of chars following, since it takes two
2724 * chars to represent a byte.
2728 * 1) two byte address data record
2729 * 2) three byte address data record
2730 * 3) four byte address data record
2731 * 7) four byte address termination record
2732 * 8) three byte address termination record
2733 * 9) two byte address termination record
2736 * is the start address of the data following, or in the case of
2737 * a termination record, the start address of the image
2741 * is the sum of all the raw byte data in the record, from the length
2742 * upwards, modulo 256 and subtracted from 255.
2744 * This routine returns the length of the S-record.
2749 mips_make_srec (char *buf
, int type
, CORE_ADDR memaddr
, unsigned char *myaddr
,
2752 unsigned char checksum
;
2755 /* Create the header for the srec. addr_size is the number of bytes in the address,
2756 and 1 is the number of bytes in the count. */
2758 /* FIXME!! bigger buf required for 64-bit! */
2761 buf
[2] = len
+ 4 + 1; /* len + 4 byte address + 1 byte checksum */
2762 /* This assumes S3 style downloads (4byte addresses). There should
2763 probably be a check, or the code changed to make it more
2765 buf
[3] = memaddr
>> 24;
2766 buf
[4] = memaddr
>> 16;
2767 buf
[5] = memaddr
>> 8;
2769 memcpy (&buf
[7], myaddr
, len
);
2771 /* Note that the checksum is calculated on the raw data, not the
2772 hexified data. It includes the length, address and the data
2773 portions of the packet. */
2775 buf
+= 2; /* Point at length byte */
2776 for (i
= 0; i
< len
+ 4 + 1; i
++)
2784 /* The following manifest controls whether we enable the simple flow
2785 control support provided by the monitor. If enabled the code will
2786 wait for an affirmative ACK between transmitting packets. */
2787 #define DOETXACK (1)
2789 /* The PMON fast-download uses an encoded packet format constructed of
2790 3byte data packets (encoded as 4 printable ASCII characters), and
2791 escape sequences (preceded by a '/'):
2794 'C' compare checksum (12bit value, not included in checksum calculation)
2795 'S' define symbol name (for addr) terminated with "," and padded to 4char boundary
2796 'Z' zero fill multiple of 3bytes
2797 'B' byte (12bit encoded value, of 8bit data)
2798 'A' address (36bit encoded value)
2799 'E' define entry as original address, and exit load
2801 The packets are processed in 4 character chunks, so the escape
2802 sequences that do not have any data (or variable length data)
2803 should be padded to a 4 character boundary. The decoder will give
2804 an error if the complete message block size is not a multiple of
2805 4bytes (size of record).
2807 The encoding of numbers is done in 6bit fields. The 6bit value is
2808 used to index into this string to get the specific character
2809 encoding for the value: */
2810 static char encoding
[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789,.";
2812 /* Convert the number of bits required into an encoded number, 6bits
2813 at a time (range 0..63). Keep a checksum if required (passed
2814 pointer non-NULL). The function returns the number of encoded
2815 characters written into the buffer. */
2817 pmon_makeb64 (unsigned long v
, char *p
, int n
, int *chksum
)
2819 int count
= (n
/ 6);
2823 fprintf_unfiltered (gdb_stderr
,
2824 "Fast encoding bitcount must be a multiple of 12bits: %dbit%s\n", n
, (n
== 1) ? "" : "s");
2829 fprintf_unfiltered (gdb_stderr
,
2830 "Fast encoding cannot process more than 36bits at the moment: %dbits\n", n
);
2834 /* Deal with the checksum: */
2840 *chksum
+= ((v
>> 24) & 0xFFF);
2842 *chksum
+= ((v
>> 12) & 0xFFF);
2844 *chksum
+= ((v
>> 0) & 0xFFF);
2851 *p
++ = encoding
[(v
>> n
) & 0x3F];
2858 /* Shorthand function (that could be in-lined) to output the zero-fill
2859 escape sequence into the data stream. */
2861 pmon_zeroset (int recsize
, char **buff
, int *amount
, unsigned int *chksum
)
2865 sprintf (*buff
, "/Z");
2866 count
= pmon_makeb64 (*amount
, (*buff
+ 2), 12, chksum
);
2867 *buff
+= (count
+ 2);
2869 return (recsize
+ count
+ 2);
2873 pmon_checkset (int recsize
, char **buff
, int *value
)
2877 /* Add the checksum (without updating the value): */
2878 sprintf (*buff
, "/C");
2879 count
= pmon_makeb64 (*value
, (*buff
+ 2), 12, NULL
);
2880 *buff
+= (count
+ 2);
2881 sprintf (*buff
, "\n");
2882 *buff
+= 2; /* include zero terminator */
2883 /* Forcing a checksum validation clears the sum: */
2885 return (recsize
+ count
+ 3);
2888 /* Amount of padding we leave after at the end of the output buffer,
2889 for the checksum and line termination characters: */
2890 #define CHECKSIZE (4 + 4 + 4 + 2)
2891 /* zero-fill, checksum, transfer end and line termination space. */
2893 /* The amount of binary data loaded from the object file in a single
2895 #define BINCHUNK (1024)
2897 /* Maximum line of data accepted by the monitor: */
2898 #define MAXRECSIZE (550)
2899 /* NOTE: This constant depends on the monitor being used. This value
2900 is for PMON 5.x on the Cogent Vr4300 board. */
2903 pmon_make_fastrec (char **outbuf
, unsigned char *inbuf
, int *inptr
,
2904 int inamount
, int *recsize
, unsigned int *csum
,
2905 unsigned int *zerofill
)
2910 /* This is a simple check to ensure that our data will fit within
2911 the maximum allowable record size. Each record output is 4bytes
2912 in length. We must allow space for a pending zero fill command,
2913 the record, and a checksum record. */
2914 while ((*recsize
< (MAXRECSIZE
- CHECKSIZE
)) && ((inamount
- *inptr
) > 0))
2916 /* Process the binary data: */
2917 if ((inamount
- *inptr
) < 3)
2920 *recsize
= pmon_zeroset (*recsize
, &p
, zerofill
, csum
);
2922 count
= pmon_makeb64 (inbuf
[*inptr
], &p
[2], 12, csum
);
2924 *recsize
+= (2 + count
);
2929 unsigned int value
= ((inbuf
[*inptr
+ 0] << 16) | (inbuf
[*inptr
+ 1] << 8) | inbuf
[*inptr
+ 2]);
2930 /* Simple check for zero data. TODO: A better check would be
2931 to check the last, and then the middle byte for being zero
2932 (if the first byte is not). We could then check for
2933 following runs of zeros, and if above a certain size it is
2934 worth the 4 or 8 character hit of the byte insertions used
2935 to pad to the start of the zeroes. NOTE: This also depends
2936 on the alignment at the end of the zero run. */
2937 if (value
== 0x00000000)
2940 if (*zerofill
== 0xFFF) /* 12bit counter */
2941 *recsize
= pmon_zeroset (*recsize
, &p
, zerofill
, csum
);
2946 *recsize
= pmon_zeroset (*recsize
, &p
, zerofill
, csum
);
2947 count
= pmon_makeb64 (value
, p
, 24, csum
);
2960 pmon_check_ack (char *mesg
)
2962 #if defined(DOETXACK)
2967 c
= serial_readchar (udp_in_use
? udp_desc
: mips_desc
,
2969 if ((c
== SERIAL_TIMEOUT
) || (c
!= 0x06))
2971 fprintf_unfiltered (gdb_stderr
,
2972 "Failed to receive valid ACK for %s\n", mesg
);
2973 return (-1); /* terminate the download */
2976 #endif /* DOETXACK */
2980 /* pmon_download - Send a sequence of characters to the PMON download port,
2981 which is either a serial port or a UDP socket. */
2984 pmon_start_download (void)
2988 /* Create the temporary download file. */
2989 if ((tftp_file
= fopen (tftp_localname
, "w")) == NULL
)
2990 perror_with_name (tftp_localname
);
2994 mips_send_command (udp_in_use
? LOAD_CMD_UDP
: LOAD_CMD
, 0);
2995 mips_expect ("Downloading from ");
2996 mips_expect (udp_in_use
? "udp" : "tty0");
2997 mips_expect (", ^C to abort\r\n");
3002 mips_expect_download (char *string
)
3004 if (!mips_expect (string
))
3006 fprintf_unfiltered (gdb_stderr
, "Load did not complete successfully.\n");
3008 remove (tftp_localname
); /* Remove temporary file */
3016 pmon_check_entry_address (char *entry_address
, int final
)
3018 char hexnumber
[9]; /* includes '\0' space */
3019 mips_expect_timeout (entry_address
, tftp_in_use
? 15 : remote_timeout
);
3020 sprintf (hexnumber
, "%x", final
);
3021 mips_expect (hexnumber
);
3022 mips_expect ("\r\n");
3026 pmon_check_total (int bintotal
)
3028 char hexnumber
[9]; /* includes '\0' space */
3029 mips_expect ("\r\ntotal = 0x");
3030 sprintf (hexnumber
, "%x", bintotal
);
3031 mips_expect (hexnumber
);
3032 return mips_expect_download (" bytes\r\n");
3036 pmon_end_download (int final
, int bintotal
)
3038 char hexnumber
[9]; /* includes '\0' space */
3042 static char *load_cmd_prefix
= "load -b -s ";
3046 /* Close off the temporary file containing the load data. */
3050 /* Make the temporary file readable by the world. */
3051 if (stat (tftp_localname
, &stbuf
) == 0)
3052 chmod (tftp_localname
, stbuf
.st_mode
| S_IROTH
);
3054 /* Must reinitialize the board to prevent PMON from crashing. */
3055 mips_send_command ("initEther\r", -1);
3057 /* Send the load command. */
3058 cmd
= xmalloc (strlen (load_cmd_prefix
) + strlen (tftp_name
) + 2);
3059 strcpy (cmd
, load_cmd_prefix
);
3060 strcat (cmd
, tftp_name
);
3062 mips_send_command (cmd
, 0);
3064 if (!mips_expect_download ("Downloading from "))
3066 if (!mips_expect_download (tftp_name
))
3068 if (!mips_expect_download (", ^C to abort\r\n"))
3072 /* Wait for the stuff that PMON prints after the load has completed.
3073 The timeout value for use in the tftp case (15 seconds) was picked
3074 arbitrarily but might be too small for really large downloads. FIXME. */
3075 switch (mips_monitor
)
3078 pmon_check_ack ("termination");
3079 pmon_check_entry_address ("Entry address is ", final
);
3080 if (!pmon_check_total (bintotal
))
3084 pmon_check_entry_address ("Entry Address = ", final
);
3085 pmon_check_ack ("termination");
3086 if (!pmon_check_total (bintotal
))
3092 remove (tftp_localname
); /* Remove temporary file */
3096 pmon_download (char *buffer
, int length
)
3099 fwrite (buffer
, 1, length
, tftp_file
);
3101 serial_write (udp_in_use
? udp_desc
: mips_desc
, buffer
, length
);
3105 pmon_load_fast (char *file
)
3109 unsigned char *binbuf
;
3112 unsigned int csum
= 0;
3113 int hashmark
= !tftp_in_use
;
3118 buffer
= (char *) xmalloc (MAXRECSIZE
+ 1);
3119 binbuf
= (unsigned char *) xmalloc (BINCHUNK
);
3121 abfd
= bfd_openr (file
, 0);
3124 printf_filtered ("Unable to open file %s\n", file
);
3128 if (bfd_check_format (abfd
, bfd_object
) == 0)
3130 printf_filtered ("File is not an object file\n");
3134 /* Setup the required download state: */
3135 mips_send_command ("set dlproto etxack\r", -1);
3136 mips_send_command ("set dlecho off\r", -1);
3137 /* NOTE: We get a "cannot set variable" message if the variable is
3138 already defined to have the argument we give. The code doesn't
3139 care, since it just scans to the next prompt anyway. */
3140 /* Start the download: */
3141 pmon_start_download ();
3143 /* Zero the checksum */
3144 sprintf (buffer
, "/Kxx\n");
3145 reclen
= strlen (buffer
);
3146 pmon_download (buffer
, reclen
);
3147 finished
= pmon_check_ack ("/Kxx");
3149 for (s
= abfd
->sections
; s
&& !finished
; s
= s
->next
)
3150 if (s
->flags
& SEC_LOAD
) /* only deal with loadable sections */
3152 bintotal
+= bfd_get_section_size (s
);
3153 final
= (s
->vma
+ bfd_get_section_size (s
));
3155 printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s
->name
, (unsigned int) s
->vma
,
3156 (unsigned int) (s
->vma
+ bfd_get_section_size (s
)));
3157 gdb_flush (gdb_stdout
);
3159 /* Output the starting address */
3160 sprintf (buffer
, "/A");
3161 reclen
= pmon_makeb64 (s
->vma
, &buffer
[2], 36, &csum
);
3162 buffer
[2 + reclen
] = '\n';
3163 buffer
[3 + reclen
] = '\0';
3164 reclen
+= 3; /* for the initial escape code and carriage return */
3165 pmon_download (buffer
, reclen
);
3166 finished
= pmon_check_ack ("/A");
3170 unsigned int binamount
;
3171 unsigned int zerofill
= 0;
3178 i
< bfd_get_section_size (s
) && !finished
;
3183 binamount
= min (BINCHUNK
, bfd_get_section_size (s
) - i
);
3185 bfd_get_section_contents (abfd
, s
, binbuf
, i
, binamount
);
3187 /* This keeps a rolling checksum, until we decide to output
3189 for (; ((binamount
- binptr
) > 0);)
3191 pmon_make_fastrec (&bp
, binbuf
, &binptr
, binamount
,
3192 &reclen
, &csum
, &zerofill
);
3193 if (reclen
>= (MAXRECSIZE
- CHECKSIZE
))
3195 reclen
= pmon_checkset (reclen
, &bp
, &csum
);
3196 pmon_download (buffer
, reclen
);
3197 finished
= pmon_check_ack ("data record");
3200 zerofill
= 0; /* do not transmit pending zerofills */
3204 if (deprecated_ui_load_progress_hook
)
3205 deprecated_ui_load_progress_hook (s
->name
, i
);
3209 putchar_unfiltered ('#');
3210 gdb_flush (gdb_stdout
);
3214 reclen
= 0; /* buffer processed */
3219 /* Ensure no out-standing zerofill requests: */
3221 reclen
= pmon_zeroset (reclen
, &bp
, &zerofill
, &csum
);
3223 /* and then flush the line: */
3226 reclen
= pmon_checkset (reclen
, &bp
, &csum
);
3227 /* Currently pmon_checkset outputs the line terminator by
3228 default, so we write out the buffer so far: */
3229 pmon_download (buffer
, reclen
);
3230 finished
= pmon_check_ack ("record remnant");
3234 putchar_unfiltered ('\n');
3237 /* Terminate the transfer. We know that we have an empty output
3238 buffer at this point. */
3239 sprintf (buffer
, "/E/E\n"); /* include dummy padding characters */
3240 reclen
= strlen (buffer
);
3241 pmon_download (buffer
, reclen
);
3244 { /* Ignore the termination message: */
3245 serial_flush_input (udp_in_use
? udp_desc
: mips_desc
);
3248 { /* Deal with termination message: */
3249 pmon_end_download (final
, bintotal
);
3255 /* mips_load -- download a file. */
3258 mips_load (char *file
, int from_tty
)
3260 /* Get the board out of remote debugging mode. */
3261 if (mips_exit_debug ())
3262 error ("mips_load: Couldn't get into monitor mode.");
3264 if (mips_monitor
!= MON_IDT
)
3265 pmon_load_fast (file
);
3267 mips_load_srec (file
);
3271 /* Finally, make the PC point at the start address */
3272 if (mips_monitor
!= MON_IDT
)
3274 /* Work around problem where PMON monitor updates the PC after a load
3275 to a different value than GDB thinks it has. The following ensures
3276 that the write_pc() WILL update the PC value: */
3277 struct regcache
*regcache
= get_current_regcache ();
3278 regcache_set_valid_p (regcache
,
3279 gdbarch_pc_regnum (get_regcache_arch (regcache
)),
3283 write_pc (bfd_get_start_address (exec_bfd
));
3285 inferior_ptid
= null_ptid
; /* No process now */
3287 /* This is necessary because many things were based on the PC at the time that
3288 we attached to the monitor, which is no longer valid now that we have loaded
3289 new code (and just changed the PC). Another way to do this might be to call
3290 normal_stop, except that the stack may not be valid, and things would get
3291 horribly confused... */
3293 clear_symtab_users ();
3297 /* Pass the command argument as a packet to PMON verbatim. */
3300 pmon_command (char *args
, int from_tty
)
3302 char buf
[DATA_MAXLEN
+ 1];
3305 sprintf (buf
, "0x0 %s", args
);
3306 mips_send_packet (buf
, 1);
3307 printf_filtered ("Send packet: %s\n", buf
);
3309 rlen
= mips_receive_packet (buf
, 1, mips_receive_wait
);
3311 printf_filtered ("Received packet: %s\n", buf
);
3314 extern initialize_file_ftype _initialize_remote_mips
; /* -Wmissing-prototypes */
3317 _initialize_remote_mips (void)
3319 /* Initialize the fields in mips_ops that are common to all four targets. */
3320 mips_ops
.to_longname
= "Remote MIPS debugging over serial line";
3321 mips_ops
.to_close
= mips_close
;
3322 mips_ops
.to_detach
= mips_detach
;
3323 mips_ops
.to_resume
= mips_resume
;
3324 mips_ops
.to_fetch_registers
= mips_fetch_registers
;
3325 mips_ops
.to_store_registers
= mips_store_registers
;
3326 mips_ops
.to_prepare_to_store
= mips_prepare_to_store
;
3327 mips_ops
.deprecated_xfer_memory
= mips_xfer_memory
;
3328 mips_ops
.to_files_info
= mips_files_info
;
3329 mips_ops
.to_insert_breakpoint
= mips_insert_breakpoint
;
3330 mips_ops
.to_remove_breakpoint
= mips_remove_breakpoint
;
3331 mips_ops
.to_insert_watchpoint
= mips_insert_watchpoint
;
3332 mips_ops
.to_remove_watchpoint
= mips_remove_watchpoint
;
3333 mips_ops
.to_stopped_by_watchpoint
= mips_stopped_by_watchpoint
;
3334 mips_ops
.to_can_use_hw_breakpoint
= mips_can_use_watchpoint
;
3335 mips_ops
.to_kill
= mips_kill
;
3336 mips_ops
.to_load
= mips_load
;
3337 mips_ops
.to_create_inferior
= mips_create_inferior
;
3338 mips_ops
.to_mourn_inferior
= mips_mourn_inferior
;
3339 mips_ops
.to_log_command
= serial_log_command
;
3340 mips_ops
.to_stratum
= process_stratum
;
3341 mips_ops
.to_has_all_memory
= 1;
3342 mips_ops
.to_has_memory
= 1;
3343 mips_ops
.to_has_stack
= 1;
3344 mips_ops
.to_has_registers
= 1;
3345 mips_ops
.to_has_execution
= 1;
3346 mips_ops
.to_magic
= OPS_MAGIC
;
3348 /* Copy the common fields to all four target vectors. */
3349 pmon_ops
= ddb_ops
= lsi_ops
= mips_ops
;
3351 /* Initialize target-specific fields in the target vectors. */
3352 mips_ops
.to_shortname
= "mips";
3353 mips_ops
.to_doc
= "\
3354 Debug a board using the MIPS remote debugging protocol over a serial line.\n\
3355 The argument is the device it is connected to or, if it contains a colon,\n\
3356 HOST:PORT to access a board over a network";
3357 mips_ops
.to_open
= mips_open
;
3358 mips_ops
.to_wait
= mips_wait
;
3360 pmon_ops
.to_shortname
= "pmon";
3361 pmon_ops
.to_doc
= "\
3362 Debug a board using the PMON MIPS remote debugging protocol over a serial\n\
3363 line. The argument is the device it is connected to or, if it contains a\n\
3364 colon, HOST:PORT to access a board over a network";
3365 pmon_ops
.to_open
= pmon_open
;
3366 pmon_ops
.to_wait
= mips_wait
;
3368 ddb_ops
.to_shortname
= "ddb";
3370 Debug a board using the PMON MIPS remote debugging protocol over a serial\n\
3371 line. The first argument is the device it is connected to or, if it contains\n\
3372 a colon, HOST:PORT to access a board over a network. The optional second\n\
3373 parameter is the temporary file in the form HOST:FILENAME to be used for\n\
3374 TFTP downloads to the board. The optional third parameter is the local name\n\
3375 of the TFTP temporary file, if it differs from the filename seen by the board.";
3376 ddb_ops
.to_open
= ddb_open
;
3377 ddb_ops
.to_wait
= mips_wait
;
3379 lsi_ops
.to_shortname
= "lsi";
3380 lsi_ops
.to_doc
= pmon_ops
.to_doc
;
3381 lsi_ops
.to_open
= lsi_open
;
3382 lsi_ops
.to_wait
= mips_wait
;
3384 /* Add the targets. */
3385 add_target (&mips_ops
);
3386 add_target (&pmon_ops
);
3387 add_target (&ddb_ops
);
3388 add_target (&lsi_ops
);
3390 add_setshow_zinteger_cmd ("timeout", no_class
, &mips_receive_wait
, _("\
3391 Set timeout in seconds for remote MIPS serial I/O."), _("\
3392 Show timeout in seconds for remote MIPS serial I/O."), NULL
,
3394 NULL
, /* FIXME: i18n: */
3395 &setlist
, &showlist
);
3397 add_setshow_zinteger_cmd ("retransmit-timeout", no_class
,
3398 &mips_retransmit_wait
, _("\
3399 Set retransmit timeout in seconds for remote MIPS serial I/O."), _("\
3400 Show retransmit timeout in seconds for remote MIPS serial I/O."), _("\
3401 This is the number of seconds to wait for an acknowledgement to a packet\n\
3402 before resending the packet."),
3404 NULL
, /* FIXME: i18n: */
3405 &setlist
, &showlist
);
3407 add_setshow_zinteger_cmd ("syn-garbage-limit", no_class
,
3408 &mips_syn_garbage
, _("\
3409 Set the maximum number of characters to ignore when scanning for a SYN."), _("\
3410 Show the maximum number of characters to ignore when scanning for a SYN."), _("\
3411 This is the maximum number of characters GDB will ignore when trying to\n\
3412 synchronize with the remote system. A value of -1 means that there is no\n\
3413 limit. (Note that these characters are printed out even though they are\n\
3416 NULL
, /* FIXME: i18n: */
3417 &setlist
, &showlist
);
3419 add_setshow_string_cmd ("monitor-prompt", class_obscure
,
3420 &mips_monitor_prompt
, _("\
3421 Set the prompt that GDB expects from the monitor."), _("\
3422 Show the prompt that GDB expects from the monitor."), NULL
,
3424 NULL
, /* FIXME: i18n: */
3425 &setlist
, &showlist
);
3427 add_setshow_zinteger_cmd ("monitor-warnings", class_obscure
,
3428 &monitor_warnings
, _("\
3429 Set printing of monitor warnings."), _("\
3430 Show printing of monitor warnings."), _("\
3431 When enabled, monitor warnings about hardware breakpoints will be displayed."),
3433 NULL
, /* FIXME: i18n: */
3434 &setlist
, &showlist
);
3436 add_com ("pmon", class_obscure
, pmon_command
,
3437 _("Send a packet to PMON (must be in debug mode)."));
3439 add_setshow_boolean_cmd ("mask-address", no_class
, &mask_address_p
, _("\
3440 Set zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\
3441 Show zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\
3442 Use \"on\" to enable the masking and \"off\" to disable it."),
3444 NULL
, /* FIXME: i18n: */
3445 &setlist
, &showlist
);