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 (struct target_ops
*ops
);
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 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
1191 char myBuff
[DATA_MAXLEN
+ 1];
1196 unsigned long rresponse
;
1198 if (buff
== (char *) NULL
)
1203 if (mips_need_reply
)
1204 internal_error (__FILE__
, __LINE__
,
1205 _("mips_request: Trying to send command before reply"));
1206 sprintf (buff
, "0x0 %c 0x%s 0x%s", cmd
,
1207 phex_nz (addr
, addr_size
), phex_nz (data
, addr_size
));
1208 mips_send_packet (buff
, 1);
1209 mips_need_reply
= 1;
1212 if (perr
== (int *) NULL
)
1215 if (!mips_need_reply
)
1216 internal_error (__FILE__
, __LINE__
,
1217 _("mips_request: Trying to get reply before command"));
1219 mips_need_reply
= 0;
1221 len
= mips_receive_packet (buff
, 1, timeout
);
1224 if (sscanf (buff
, "0x%x %c 0x%x 0x%lx",
1225 &rpid
, &rcmd
, &rerrflg
, &rresponse
) != 4
1226 || (cmd
!= '\0' && rcmd
!= cmd
))
1227 mips_error ("Bad response from remote board");
1233 /* FIXME: This will returns MIPS errno numbers, which may or may
1234 not be the same as errno values used on other systems. If
1235 they stick to common errno values, they will be the same, but
1236 if they don't, they must be translated. */
1247 mips_initialize_cleanups (void *arg
)
1249 mips_initializing
= 0;
1253 mips_exit_cleanups (void *arg
)
1259 mips_send_command (const char *cmd
, int prompt
)
1261 serial_write (mips_desc
, cmd
, strlen (cmd
));
1265 mips_expect (mips_monitor_prompt
);
1268 /* Enter remote (dbx) debug mode: */
1270 mips_enter_debug (void)
1272 /* Reset the sequence numbers, ready for the new debug sequence: */
1274 mips_receive_seq
= 0;
1276 if (mips_monitor
!= MON_IDT
)
1277 mips_send_command ("debug\r", 0);
1278 else /* assume IDT monitor by default */
1279 mips_send_command ("db tty0\r", 0);
1282 serial_write (mips_desc
, "\r", sizeof "\r" - 1);
1284 /* We don't need to absorb any spurious characters here, since the
1285 mips_receive_header will eat up a reasonable number of characters
1286 whilst looking for the SYN, however this avoids the "garbage"
1287 being displayed to the user. */
1288 if (mips_monitor
!= MON_IDT
)
1292 char buff
[DATA_MAXLEN
+ 1];
1293 if (mips_receive_packet (buff
, 1, 3) < 0)
1294 mips_error ("Failed to initialize (didn't receive packet).");
1298 /* Exit remote (dbx) debug mode, returning to the monitor prompt: */
1300 mips_exit_debug (void)
1303 struct cleanup
*old_cleanups
= make_cleanup (mips_exit_cleanups
, NULL
);
1307 if (mips_monitor
!= MON_IDT
)
1309 /* The DDB (NEC) and MiniRISC (LSI) versions of PMON exit immediately,
1310 so we do not get a reply to this command: */
1311 mips_request ('x', 0, 0, NULL
, mips_receive_wait
, NULL
);
1312 mips_need_reply
= 0;
1313 if (!mips_expect (" break!"))
1317 mips_request ('x', 0, 0, &err
, mips_receive_wait
, NULL
);
1319 if (!mips_expect (mips_monitor_prompt
))
1322 do_cleanups (old_cleanups
);
1327 /* Initialize a new connection to the MIPS board, and make sure we are
1328 really connected. */
1331 mips_initialize (void)
1334 struct cleanup
*old_cleanups
= make_cleanup (mips_initialize_cleanups
, NULL
);
1337 /* What is this code doing here? I don't see any way it can happen, and
1338 it might mean mips_initializing didn't get cleared properly.
1339 So I'll make it a warning. */
1341 if (mips_initializing
)
1343 warning ("internal error: mips_initialize called twice");
1348 mips_initializing
= 1;
1350 /* At this point, the packit protocol isn't responding. We'll try getting
1351 into the monitor, and restarting the protocol. */
1353 /* Force the system into the monitor. After this we *should* be at
1354 the mips_monitor_prompt. */
1355 if (mips_monitor
!= MON_IDT
)
1356 j
= 0; /* start by checking if we are already at the prompt */
1358 j
= 1; /* start by sending a break */
1363 case 0: /* First, try sending a CR */
1364 serial_flush_input (mips_desc
);
1365 serial_write (mips_desc
, "\r", 1);
1367 case 1: /* First, try sending a break */
1368 serial_send_break (mips_desc
);
1370 case 2: /* Then, try a ^C */
1371 serial_write (mips_desc
, "\003", 1);
1373 case 3: /* Then, try escaping from download */
1375 if (mips_monitor
!= MON_IDT
)
1379 /* We shouldn't need to send multiple termination
1380 sequences, since the target performs line (or
1381 block) reads, and then processes those
1382 packets. In-case we were downloading a large packet
1383 we flush the output buffer before inserting a
1384 termination sequence. */
1385 serial_flush_output (mips_desc
);
1386 sprintf (tbuff
, "\r/E/E\r");
1387 serial_write (mips_desc
, tbuff
, 6);
1394 /* We are possibly in binary download mode, having
1395 aborted in the middle of an S-record. ^C won't
1396 work because of binary mode. The only reliable way
1397 out is to send enough termination packets (8 bytes)
1398 to fill up and then overflow the largest size
1399 S-record (255 bytes in this case). This amounts to
1403 mips_make_srec (srec
, '7', 0, NULL
, 0);
1405 for (i
= 1; i
<= 33; i
++)
1407 serial_write (mips_desc
, srec
, 8);
1409 if (serial_readchar (mips_desc
, 0) >= 0)
1410 break; /* Break immediatly if we get something from
1417 mips_error ("Failed to initialize.");
1420 if (mips_expect (mips_monitor_prompt
))
1424 if (mips_monitor
!= MON_IDT
)
1426 /* Sometimes PMON ignores the first few characters in the first
1427 command sent after a load. Sending a blank command gets
1429 mips_send_command ("\r", -1);
1431 /* Ensure the correct target state: */
1432 if (mips_monitor
!= MON_LSI
)
1433 mips_send_command ("set regsize 64\r", -1);
1434 mips_send_command ("set hostport tty0\r", -1);
1435 mips_send_command ("set brkcmd \"\"\r", -1);
1436 /* Delete all the current breakpoints: */
1437 mips_send_command ("db *\r", -1);
1438 /* NOTE: PMON does not have breakpoint support through the
1439 "debug" mode, only at the monitor command-line. */
1442 mips_enter_debug ();
1444 /* Clear all breakpoints: */
1445 if ((mips_monitor
== MON_IDT
1446 && mips_clear_breakpoint (-1, 0, BREAK_UNUSED
) == 0)
1447 || mips_monitor
== MON_LSI
)
1448 monitor_supports_breakpoints
= 1;
1450 monitor_supports_breakpoints
= 0;
1452 do_cleanups (old_cleanups
);
1454 /* If this doesn't call error, we have connected; we don't care if
1455 the request itself succeeds or fails. */
1457 mips_request ('r', 0, 0, &err
, mips_receive_wait
, NULL
);
1460 /* Open a connection to the remote board. */
1462 common_open (struct target_ops
*ops
, char *name
, int from_tty
,
1463 enum mips_monitor_type new_monitor
,
1464 const char *new_monitor_prompt
)
1467 char *serial_port_name
;
1468 char *remote_name
= 0;
1469 char *local_name
= 0;
1474 "To open a MIPS remote debugging connection, you need to specify what serial\n\
1475 device is attached to the target board (e.g., /dev/ttya).\n"
1476 "If you want to use TFTP to download to the board, specify the name of a\n"
1477 "temporary file to be used by GDB for downloads as the second argument.\n"
1478 "This filename must be in the form host:filename, where host is the name\n"
1479 "of the host running the TFTP server, and the file must be readable by the\n"
1480 "world. If the local name of the temporary file differs from the name as\n"
1481 "seen from the board via TFTP, specify that name as the third parameter.\n");
1483 /* Parse the serial port name, the optional TFTP name, and the
1484 optional local TFTP name. */
1485 argv
= gdb_buildargv (name
);
1486 make_cleanup_freeargv (argv
);
1488 serial_port_name
= xstrdup (argv
[0]);
1489 if (argv
[1]) /* remote TFTP name specified? */
1491 remote_name
= argv
[1];
1492 if (argv
[2]) /* local TFTP filename specified? */
1493 local_name
= argv
[2];
1496 target_preopen (from_tty
);
1499 unpush_target (current_ops
);
1501 /* Open and initialize the serial port. */
1502 mips_desc
= serial_open (serial_port_name
);
1503 if (mips_desc
== NULL
)
1504 perror_with_name (serial_port_name
);
1506 if (baud_rate
!= -1)
1508 if (serial_setbaudrate (mips_desc
, baud_rate
))
1510 serial_close (mips_desc
);
1511 perror_with_name (serial_port_name
);
1515 serial_raw (mips_desc
);
1517 /* Open and initialize the optional download port. If it is in the form
1518 hostname#portnumber, it's a UDP socket. If it is in the form
1519 hostname:filename, assume it's the TFTP filename that must be
1520 passed to the DDB board to tell it where to get the load file. */
1523 if (strchr (remote_name
, '#'))
1525 udp_desc
= serial_open (remote_name
);
1527 perror_with_name ("Unable to open UDP port");
1532 /* Save the remote and local names of the TFTP temp file. If
1533 the user didn't specify a local name, assume it's the same
1534 as the part of the remote name after the "host:". */
1538 xfree (tftp_localname
);
1539 if (local_name
== NULL
)
1540 if ((local_name
= strchr (remote_name
, ':')) != NULL
)
1541 local_name
++; /* skip over the colon */
1542 if (local_name
== NULL
)
1543 local_name
= remote_name
; /* local name same as remote name */
1544 tftp_name
= xstrdup (remote_name
);
1545 tftp_localname
= xstrdup (local_name
);
1553 /* Reset the expected monitor prompt if it's never been set before. */
1554 if (mips_monitor_prompt
== NULL
)
1555 mips_monitor_prompt
= xstrdup (new_monitor_prompt
);
1556 mips_monitor
= new_monitor
;
1561 printf_unfiltered ("Remote MIPS debugging using %s\n", serial_port_name
);
1563 /* Switch to using remote target now. */
1566 /* FIXME: Should we call start_remote here? */
1568 /* Try to figure out the processor model if possible. */
1569 deprecated_mips_set_processor_regs_hack ();
1571 /* This is really the job of start_remote however, that makes an
1572 assumption that the target is about to print out a status message
1573 of some sort. That doesn't happen here (in fact, it may not be
1574 possible to get the monitor to send the appropriate packet). */
1576 reinit_frame_cache ();
1577 registers_changed ();
1578 stop_pc
= regcache_read_pc (get_current_regcache ());
1579 print_stack_frame (get_selected_frame (NULL
), 0, SRC_AND_LOC
);
1580 xfree (serial_port_name
);
1584 mips_open (char *name
, int from_tty
)
1586 const char *monitor_prompt
= NULL
;
1587 if (gdbarch_bfd_arch_info (target_gdbarch
) != NULL
1588 && gdbarch_bfd_arch_info (target_gdbarch
)->arch
== bfd_arch_mips
)
1590 switch (gdbarch_bfd_arch_info (target_gdbarch
)->mach
)
1592 case bfd_mach_mips4100
:
1593 case bfd_mach_mips4300
:
1594 case bfd_mach_mips4600
:
1595 case bfd_mach_mips4650
:
1596 case bfd_mach_mips5000
:
1597 monitor_prompt
= "<RISQ> ";
1601 if (monitor_prompt
== NULL
)
1602 monitor_prompt
= "<IDT>";
1603 common_open (&mips_ops
, name
, from_tty
, MON_IDT
, monitor_prompt
);
1607 pmon_open (char *name
, int from_tty
)
1609 common_open (&pmon_ops
, name
, from_tty
, MON_PMON
, "PMON> ");
1613 ddb_open (char *name
, int from_tty
)
1615 common_open (&ddb_ops
, name
, from_tty
, MON_DDB
, "NEC010>");
1619 lsi_open (char *name
, int from_tty
)
1623 /* Clear the LSI breakpoint table. */
1624 for (i
= 0; i
< MAX_LSI_BREAKPOINTS
; i
++)
1625 lsi_breakpoints
[i
].type
= BREAK_UNUSED
;
1627 common_open (&lsi_ops
, name
, from_tty
, MON_LSI
, "PMON> ");
1630 /* Close a connection to the remote board. */
1633 mips_close (int quitting
)
1637 /* Get the board out of remote debugging mode. */
1638 (void) mips_exit_debug ();
1644 /* Detach from the remote board. */
1647 mips_detach (struct target_ops
*ops
, char *args
, int from_tty
)
1650 error ("Argument given to \"detach\" when remotely debugging.");
1657 printf_unfiltered ("Ending remote MIPS debugging.\n");
1660 /* Tell the target board to resume. This does not wait for a reply
1661 from the board, except in the case of single-stepping on LSI boards,
1662 where PMON does return a reply. */
1665 mips_resume (struct target_ops
*ops
,
1666 ptid_t ptid
, int step
, enum target_signal siggnal
)
1670 /* LSI PMON requires returns a reply packet "0x1 s 0x0 0x57f" after
1671 a single step, so we wait for that. */
1672 mips_request (step
? 's' : 'c', 1, siggnal
,
1673 mips_monitor
== MON_LSI
&& step
? &err
: (int *) NULL
,
1674 mips_receive_wait
, NULL
);
1677 /* Return the signal corresponding to SIG, where SIG is the number which
1678 the MIPS protocol uses for the signal. */
1679 static enum target_signal
1680 mips_signal_from_protocol (int sig
)
1682 /* We allow a few more signals than the IDT board actually returns, on
1683 the theory that there is at least *some* hope that perhaps the numbering
1684 for these signals is widely agreed upon. */
1687 return TARGET_SIGNAL_UNKNOWN
;
1689 /* Don't want to use target_signal_from_host because we are converting
1690 from MIPS signal numbers, not host ones. Our internal numbers
1691 match the MIPS numbers for the signals the board can return, which
1692 are: SIGINT, SIGSEGV, SIGBUS, SIGILL, SIGFPE, SIGTRAP. */
1693 return (enum target_signal
) sig
;
1696 /* Wait until the remote stops, and return a wait status. */
1699 mips_wait (struct target_ops
*ops
,
1700 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
1704 char buff
[DATA_MAXLEN
];
1710 interrupt_count
= 0;
1713 /* If we have not sent a single step or continue command, then the
1714 board is waiting for us to do something. Return a status
1715 indicating that it is stopped. */
1716 if (!mips_need_reply
)
1718 status
->kind
= TARGET_WAITKIND_STOPPED
;
1719 status
->value
.sig
= TARGET_SIGNAL_TRAP
;
1720 return inferior_ptid
;
1723 /* No timeout; we sit here as long as the program continues to execute. */
1725 rstatus
= mips_request ('\000', 0, 0, &err
, -1, buff
);
1728 mips_error ("Remote failure: %s", safe_strerror (errno
));
1730 /* On returning from a continue, the PMON monitor seems to start
1731 echoing back the messages we send prior to sending back the
1732 ACK. The code can cope with this, but to try and avoid the
1733 unnecessary serial traffic, and "spurious" characters displayed
1734 to the user, we cheat and reset the debug protocol. The problems
1735 seems to be caused by a check on the number of arguments, and the
1736 command length, within the monitor causing it to echo the command
1738 if (mips_monitor
== MON_PMON
)
1741 mips_enter_debug ();
1744 /* See if we got back extended status. If so, pick out the pc, fp, sp, etc... */
1746 nfields
= sscanf (buff
, "0x%*x %*c 0x%*x 0x%*x 0x%x 0x%x 0x%x 0x%*x %s",
1747 &rpc
, &rfp
, &rsp
, flags
);
1750 struct regcache
*regcache
= get_current_regcache ();
1751 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1752 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
1753 char buf
[MAX_REGISTER_SIZE
];
1755 store_unsigned_integer
1756 (buf
, register_size (gdbarch
, gdbarch_pc_regnum (gdbarch
)),
1758 regcache_raw_supply (regcache
, gdbarch_pc_regnum (gdbarch
), buf
);
1760 store_unsigned_integer
1761 (buf
, register_size (gdbarch
, gdbarch_pc_regnum (gdbarch
)),
1763 regcache_raw_supply (regcache
, 30, buf
); /* This register they are avoiding and so it is unnamed */
1765 store_unsigned_integer
1766 (buf
, register_size (gdbarch
, gdbarch_sp_regnum (gdbarch
)),
1768 regcache_raw_supply (regcache
, gdbarch_sp_regnum (gdbarch
), buf
);
1770 store_unsigned_integer
1771 (buf
, register_size (gdbarch
, gdbarch_deprecated_fp_regnum (gdbarch
)),
1773 regcache_raw_supply (regcache
,
1774 gdbarch_deprecated_fp_regnum (gdbarch
), buf
);
1780 for (i
= 0; i
<= 2; i
++)
1781 if (flags
[i
] == 'r' || flags
[i
] == 'w')
1783 else if (flags
[i
] == '\000')
1788 if (strcmp (target_shortname
, "lsi") == 0)
1791 /* If this is an LSI PMON target, see if we just hit a hardrdware watchpoint.
1792 Right now, PMON doesn't give us enough information to determine which
1793 breakpoint we hit. So we have to look up the PC in our own table
1794 of breakpoints, and if found, assume it's just a normal instruction
1795 fetch breakpoint, not a data watchpoint. FIXME when PMON
1796 provides some way to tell us what type of breakpoint it is. */
1798 CORE_ADDR pc
= regcache_read_pc (get_current_regcache ());
1801 for (i
= 0; i
< MAX_LSI_BREAKPOINTS
; i
++)
1803 if (lsi_breakpoints
[i
].addr
== pc
1804 && lsi_breakpoints
[i
].type
== BREAK_FETCH
)
1811 /* If a data breakpoint was hit, PMON returns the following packet:
1813 The return packet from an ordinary breakpoint doesn't have the
1814 extra 0x01 field tacked onto the end. */
1815 if (nfields
== 1 && rpc
== 1)
1820 /* NOTE: The following (sig) numbers are defined by PMON:
1821 SPP_SIGTRAP 5 breakpoint
1829 /* Translate a MIPS waitstatus. We use constants here rather than WTERMSIG
1830 and so on, because the constants we want here are determined by the
1831 MIPS protocol and have nothing to do with what host we are running on. */
1832 if ((rstatus
& 0xff) == 0)
1834 status
->kind
= TARGET_WAITKIND_EXITED
;
1835 status
->value
.integer
= (((rstatus
) >> 8) & 0xff);
1837 else if ((rstatus
& 0xff) == 0x7f)
1839 status
->kind
= TARGET_WAITKIND_STOPPED
;
1840 status
->value
.sig
= mips_signal_from_protocol (((rstatus
) >> 8) & 0xff);
1842 /* If the stop PC is in the _exit function, assume
1843 we hit the 'break 0x3ff' instruction in _exit, so this
1844 is not a normal breakpoint. */
1845 if (strcmp (target_shortname
, "lsi") == 0)
1848 CORE_ADDR func_start
;
1849 CORE_ADDR pc
= regcache_read_pc (get_current_regcache ());
1851 find_pc_partial_function (pc
, &func_name
, &func_start
, NULL
);
1852 if (func_name
!= NULL
&& strcmp (func_name
, "_exit") == 0
1853 && func_start
== pc
)
1854 status
->kind
= TARGET_WAITKIND_EXITED
;
1859 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
1860 status
->value
.sig
= mips_signal_from_protocol (rstatus
& 0x7f);
1863 return inferior_ptid
;
1866 /* We have to map between the register numbers used by gdb and the
1867 register numbers used by the debugging protocol. */
1869 #define REGNO_OFFSET 96
1872 mips_map_regno (struct gdbarch
*gdbarch
, int regno
)
1876 if (regno
>= mips_regnum (gdbarch
)->fp0
1877 && regno
< mips_regnum (gdbarch
)->fp0
+ 32)
1878 return regno
- mips_regnum (gdbarch
)->fp0
+ 32;
1879 else if (regno
== mips_regnum (gdbarch
)->pc
)
1880 return REGNO_OFFSET
+ 0;
1881 else if (regno
== mips_regnum (gdbarch
)->cause
)
1882 return REGNO_OFFSET
+ 1;
1883 else if (regno
== mips_regnum (gdbarch
)->hi
)
1884 return REGNO_OFFSET
+ 2;
1885 else if (regno
== mips_regnum (gdbarch
)->lo
)
1886 return REGNO_OFFSET
+ 3;
1887 else if (regno
== mips_regnum (gdbarch
)->fp_control_status
)
1888 return REGNO_OFFSET
+ 4;
1889 else if (regno
== mips_regnum (gdbarch
)->fp_implementation_revision
)
1890 return REGNO_OFFSET
+ 5;
1892 /* FIXME: Is there a way to get the status register? */
1896 /* Fetch the remote registers. */
1899 mips_fetch_registers (struct target_ops
*ops
,
1900 struct regcache
*regcache
, int regno
)
1902 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1903 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
1904 unsigned LONGEST val
;
1909 for (regno
= 0; regno
< gdbarch_num_regs (gdbarch
); regno
++)
1910 mips_fetch_registers (ops
, regcache
, regno
);
1914 if (regno
== gdbarch_deprecated_fp_regnum (gdbarch
)
1915 || regno
== MIPS_ZERO_REGNUM
)
1916 /* gdbarch_deprecated_fp_regnum on the mips is a hack which is just
1917 supposed to read zero (see also mips-nat.c). */
1921 /* If PMON doesn't support this register, don't waste serial
1922 bandwidth trying to read it. */
1923 int pmon_reg
= mips_map_regno (gdbarch
, regno
);
1924 if (regno
!= 0 && pmon_reg
== 0)
1928 /* Unfortunately the PMON version in the Vr4300 board has been
1929 compiled without the 64bit register access commands. This
1930 means we cannot get hold of the full register width. */
1931 if (mips_monitor
== MON_DDB
)
1932 val
= (unsigned) mips_request ('t', pmon_reg
, 0,
1933 &err
, mips_receive_wait
, NULL
);
1935 val
= mips_request ('r', pmon_reg
, 0,
1936 &err
, mips_receive_wait
, NULL
);
1938 mips_error ("Can't read register %d: %s", regno
,
1939 safe_strerror (errno
));
1944 char buf
[MAX_REGISTER_SIZE
];
1946 /* We got the number the register holds, but gdb expects to see a
1947 value in the target byte ordering. */
1948 store_unsigned_integer (buf
, register_size (gdbarch
, regno
),
1950 regcache_raw_supply (regcache
, regno
, buf
);
1954 /* Prepare to store registers. The MIPS protocol can store individual
1955 registers, so this function doesn't have to do anything. */
1958 mips_prepare_to_store (struct regcache
*regcache
)
1962 /* Store remote register(s). */
1965 mips_store_registers (struct target_ops
*ops
,
1966 struct regcache
*regcache
, int regno
)
1968 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1974 for (regno
= 0; regno
< gdbarch_num_regs (gdbarch
); regno
++)
1975 mips_store_registers (ops
, regcache
, regno
);
1979 regcache_cooked_read_unsigned (regcache
, regno
, &val
);
1980 mips_request ('R', mips_map_regno (gdbarch
, regno
), val
,
1981 &err
, mips_receive_wait
, NULL
);
1983 mips_error ("Can't write register %d: %s", regno
, safe_strerror (errno
));
1986 /* Fetch a word from the target board. */
1989 mips_fetch_word (CORE_ADDR addr
)
1994 val
= mips_request ('d', addr
, 0, &err
, mips_receive_wait
, NULL
);
1997 /* Data space failed; try instruction space. */
1998 val
= mips_request ('i', addr
, 0, &err
,
1999 mips_receive_wait
, NULL
);
2001 mips_error ("Can't read address %s: %s",
2002 paddress (target_gdbarch
, addr
), safe_strerror (errno
));
2007 /* Store a word to the target board. Returns errno code or zero for
2008 success. If OLD_CONTENTS is non-NULL, put the old contents of that
2009 memory location there. */
2011 /* FIXME! make sure only 32-bit quantities get stored! */
2013 mips_store_word (CORE_ADDR addr
, unsigned int val
, int *old_contents
)
2016 unsigned int oldcontents
;
2018 oldcontents
= mips_request ('D', addr
, val
, &err
,
2019 mips_receive_wait
, NULL
);
2022 /* Data space failed; try instruction space. */
2023 oldcontents
= mips_request ('I', addr
, val
, &err
,
2024 mips_receive_wait
, NULL
);
2028 if (old_contents
!= NULL
)
2029 *old_contents
= oldcontents
;
2033 /* Read or write LEN bytes from inferior memory at MEMADDR,
2034 transferring to or from debugger address MYADDR. Write to inferior
2035 if SHOULD_WRITE is nonzero. Returns length of data written or
2036 read; 0 for error. Note that protocol gives us the correct value
2037 for a longword, since it transfers values in ASCII. We want the
2038 byte values, so we have to swap the longword values. */
2040 static int mask_address_p
= 1;
2043 mips_xfer_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
, int write
,
2044 struct mem_attrib
*attrib
, struct target_ops
*target
)
2046 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch
);
2053 /* PMON targets do not cope well with 64 bit addresses. Mask the
2054 value down to 32 bits. */
2056 memaddr
&= (CORE_ADDR
) 0xffffffff;
2058 /* Round starting address down to longword boundary. */
2059 addr
= memaddr
& ~3;
2060 /* Round ending address up; get number of longwords that makes. */
2061 count
= (((memaddr
+ len
) - addr
) + 3) / 4;
2062 /* Allocate buffer of that many longwords. */
2063 buffer
= alloca (count
* 4);
2067 /* Fill start and end extra bytes of buffer with existing data. */
2068 if (addr
!= memaddr
|| len
< 4)
2070 /* Need part of initial word -- fetch it. */
2071 store_unsigned_integer (&buffer
[0], 4, byte_order
,
2072 mips_fetch_word (addr
));
2077 /* Need part of last word -- fetch it. FIXME: we do this even
2078 if we don't need it. */
2079 store_unsigned_integer (&buffer
[(count
- 1) * 4], 4, byte_order
,
2080 mips_fetch_word (addr
+ (count
- 1) * 4));
2083 /* Copy data to be written over corresponding part of buffer */
2085 memcpy ((char *) buffer
+ (memaddr
& 3), myaddr
, len
);
2087 /* Write the entire buffer. */
2089 for (i
= 0; i
< count
; i
++, addr
+= 4)
2092 word
= extract_unsigned_integer (&buffer
[i
* 4], 4, byte_order
);
2093 status
= mips_store_word (addr
, word
, NULL
);
2094 /* Report each kilobyte (we download 32-bit words at a time) */
2097 printf_unfiltered ("*");
2098 gdb_flush (gdb_stdout
);
2105 /* FIXME: Do we want a QUIT here? */
2108 printf_unfiltered ("\n");
2112 /* Read all the longwords */
2113 for (i
= 0; i
< count
; i
++, addr
+= 4)
2115 store_unsigned_integer (&buffer
[i
* 4], 4, byte_order
,
2116 mips_fetch_word (addr
));
2120 /* Copy appropriate bytes out of the buffer. */
2121 memcpy (myaddr
, buffer
+ (memaddr
& 3), len
);
2126 /* Print info on this target. */
2129 mips_files_info (struct target_ops
*ignore
)
2131 printf_unfiltered ("Debugging a MIPS board over a serial line.\n");
2134 /* Kill the process running on the board. This will actually only
2135 work if we are doing remote debugging over the console input. I
2136 think that if IDT/sim had the remote debug interrupt enabled on the
2137 right port, we could interrupt the process with a break signal. */
2140 mips_kill (struct target_ops
*ops
)
2142 if (!mips_wait_flag
)
2147 if (interrupt_count
>= 2)
2149 interrupt_count
= 0;
2151 target_terminal_ours ();
2153 if (query (_("Interrupted while waiting for the program.\n\
2154 Give up (and stop debugging it)? ")))
2156 /* Clean up in such a way that mips_close won't try to talk to the
2157 board (it almost surely won't work since we weren't able to talk to
2162 printf_unfiltered ("Ending remote MIPS debugging.\n");
2163 target_mourn_inferior ();
2165 deprecated_throw_reason (RETURN_QUIT
);
2168 target_terminal_inferior ();
2171 if (remote_debug
> 0)
2172 printf_unfiltered ("Sending break\n");
2174 serial_send_break (mips_desc
);
2183 serial_write (mips_desc
, &cc
, 1);
2185 target_mourn_inferior ();
2190 /* Start running on the target board. */
2193 mips_create_inferior (struct target_ops
*ops
, char *execfile
,
2194 char *args
, char **env
, int from_tty
)
2201 Can't pass arguments to remote MIPS board; arguments ignored.");
2202 /* And don't try to use them on the next "run" command. */
2203 execute_command ("set args", 0);
2206 if (execfile
== 0 || exec_bfd
== 0)
2207 error ("No executable file specified");
2209 entry_pt
= (CORE_ADDR
) bfd_get_start_address (exec_bfd
);
2211 init_wait_for_inferior ();
2213 /* FIXME: Should we set inferior_ptid here? */
2215 regcache_write_pc (get_current_regcache (), entry_pt
);
2218 /* Clean up after a process. Actually nothing to do. */
2221 mips_mourn_inferior (struct target_ops
*ops
)
2223 if (current_ops
!= NULL
)
2224 unpush_target (current_ops
);
2225 generic_mourn_inferior ();
2228 /* We can write a breakpoint and read the shadow contents in one
2231 /* Insert a breakpoint. On targets that don't have built-in
2232 breakpoint support, we read the contents of the target location and
2233 stash it, then overwrite it with a breakpoint instruction. ADDR is
2234 the target location in the target machine. BPT is the breakpoint
2235 being inserted or removed, which contains memory for saving the
2239 mips_insert_breakpoint (struct gdbarch
*gdbarch
,
2240 struct bp_target_info
*bp_tgt
)
2242 if (monitor_supports_breakpoints
)
2243 return mips_set_breakpoint (bp_tgt
->placed_address
, MIPS_INSN32_SIZE
,
2246 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
2250 mips_remove_breakpoint (struct gdbarch
*gdbarch
,
2251 struct bp_target_info
*bp_tgt
)
2253 if (monitor_supports_breakpoints
)
2254 return mips_clear_breakpoint (bp_tgt
->placed_address
, MIPS_INSN32_SIZE
,
2257 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
2260 /* Tell whether this target can support a hardware breakpoint. CNT
2261 is the number of hardware breakpoints already installed. This
2262 implements the target_can_use_hardware_watchpoint macro. */
2265 mips_can_use_watchpoint (int type
, int cnt
, int othertype
)
2267 return cnt
< MAX_LSI_BREAKPOINTS
&& strcmp (target_shortname
, "lsi") == 0;
2271 /* Compute a don't care mask for the region bounding ADDR and ADDR + LEN - 1.
2272 This is used for memory ref breakpoints. */
2274 static unsigned long
2275 calculate_mask (CORE_ADDR addr
, int len
)
2280 mask
= addr
^ (addr
+ len
- 1);
2282 for (i
= 32; i
>= 0; i
--)
2288 mask
= (unsigned long) 0xffffffff >> i
;
2294 /* Set a data watchpoint. ADDR and LEN should be obvious. TYPE is 0
2295 for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write
2299 mips_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
2301 if (mips_set_breakpoint (addr
, len
, type
))
2308 mips_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
2310 if (mips_clear_breakpoint (addr
, len
, type
))
2317 mips_stopped_by_watchpoint (void)
2319 return hit_watchpoint
;
2323 /* Insert a breakpoint. */
2326 mips_set_breakpoint (CORE_ADDR addr
, int len
, enum break_type type
)
2328 return mips_common_breakpoint (1, addr
, len
, type
);
2332 /* Clear a breakpoint. */
2335 mips_clear_breakpoint (CORE_ADDR addr
, int len
, enum break_type type
)
2337 return mips_common_breakpoint (0, addr
, len
, type
);
2341 /* Check the error code from the return packet for an LSI breakpoint
2342 command. If there's no error, just return 0. If it's a warning,
2343 print the warning text and return 0. If it's an error, print
2344 the error text and return 1. <ADDR> is the address of the breakpoint
2345 that was being set. <RERRFLG> is the error code returned by PMON.
2346 This is a helper function for mips_common_breakpoint. */
2349 mips_check_lsi_error (CORE_ADDR addr
, int rerrflg
)
2351 struct lsi_error
*err
;
2352 char *saddr
= paddress (target_gdbarch
, addr
);
2354 if (rerrflg
== 0) /* no error */
2357 /* Warnings can be ORed together, so check them all. */
2358 if (rerrflg
& W_WARN
)
2360 if (monitor_warnings
)
2363 for (err
= lsi_warning_table
; err
->code
!= 0; err
++)
2365 if ((err
->code
& rerrflg
) == err
->code
)
2368 fprintf_unfiltered (gdb_stderr
, "\
2369 mips_common_breakpoint (%s): Warning: %s\n",
2375 fprintf_unfiltered (gdb_stderr
, "\
2376 mips_common_breakpoint (%s): Unknown warning: 0x%x\n",
2383 /* Errors are unique, i.e. can't be ORed together. */
2384 for (err
= lsi_error_table
; err
->code
!= 0; err
++)
2386 if ((err
->code
& rerrflg
) == err
->code
)
2388 fprintf_unfiltered (gdb_stderr
, "\
2389 mips_common_breakpoint (%s): Error: %s\n",
2395 fprintf_unfiltered (gdb_stderr
, "\
2396 mips_common_breakpoint (%s): Unknown error: 0x%x\n",
2403 /* This routine sends a breakpoint command to the remote target.
2405 <SET> is 1 if setting a breakpoint, or 0 if clearing a breakpoint.
2406 <ADDR> is the address of the breakpoint.
2407 <LEN> the length of the region to break on.
2408 <TYPE> is the type of breakpoint:
2409 0 = write (BREAK_WRITE)
2410 1 = read (BREAK_READ)
2411 2 = read/write (BREAK_ACCESS)
2412 3 = instruction fetch (BREAK_FETCH)
2414 Return 0 if successful; otherwise 1. */
2417 mips_common_breakpoint (int set
, CORE_ADDR addr
, int len
, enum break_type type
)
2419 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
2420 char buf
[DATA_MAXLEN
+ 1];
2422 int rpid
, rerrflg
, rresponse
, rlen
;
2425 addr
= gdbarch_addr_bits_remove (target_gdbarch
, addr
);
2427 if (mips_monitor
== MON_LSI
)
2429 if (set
== 0) /* clear breakpoint */
2431 /* The LSI PMON "clear breakpoint" has this form:
2432 <pid> 'b' <bptn> 0x0
2434 <pid> 'b' 0x0 <code>
2436 <bptn> is a breakpoint number returned by an earlier 'B' command.
2437 Possible return codes: OK, E_BPT. */
2441 /* Search for the breakpoint in the table. */
2442 for (i
= 0; i
< MAX_LSI_BREAKPOINTS
; i
++)
2443 if (lsi_breakpoints
[i
].type
== type
2444 && lsi_breakpoints
[i
].addr
== addr
2445 && lsi_breakpoints
[i
].len
== len
)
2448 /* Clear the table entry and tell PMON to clear the breakpoint. */
2449 if (i
== MAX_LSI_BREAKPOINTS
)
2452 mips_common_breakpoint: Attempt to clear bogus breakpoint at %s\n",
2453 paddress (target_gdbarch
, addr
));
2457 lsi_breakpoints
[i
].type
= BREAK_UNUSED
;
2458 sprintf (buf
, "0x0 b 0x%x 0x0", i
);
2459 mips_send_packet (buf
, 1);
2461 rlen
= mips_receive_packet (buf
, 1, mips_receive_wait
);
2464 nfields
= sscanf (buf
, "0x%x b 0x0 0x%x", &rpid
, &rerrflg
);
2467 mips_common_breakpoint: Bad response from remote board: %s",
2470 return (mips_check_lsi_error (addr
, rerrflg
));
2473 /* set a breakpoint */
2475 /* The LSI PMON "set breakpoint" command has this form:
2476 <pid> 'B' <addr> 0x0
2478 <pid> 'B' <bptn> <code>
2480 The "set data breakpoint" command has this form:
2482 <pid> 'A' <addr1> <type> [<addr2> [<value>]]
2484 where: type= "0x1" = read
2486 "0x3" = access (read or write)
2488 The reply returns two values:
2489 bptn - a breakpoint number, which is a small integer with
2490 possible values of zero through 255.
2491 code - an error return code, a value of zero indicates a
2492 succesful completion, other values indicate various
2493 errors and warnings.
2495 Possible return codes: OK, W_QAL, E_QAL, E_OUT, E_NON.
2499 if (type
== BREAK_FETCH
) /* instruction breakpoint */
2502 sprintf (buf
, "0x0 B 0x%s 0x0", phex_nz (addr
, addr_size
));
2508 sprintf (buf
, "0x0 A 0x%s 0x%x 0x%s",
2509 phex_nz (addr
, addr_size
),
2510 type
== BREAK_READ
? 1 : (type
== BREAK_WRITE
? 2 : 3),
2511 phex_nz (addr
+ len
- 1, addr_size
));
2513 mips_send_packet (buf
, 1);
2515 rlen
= mips_receive_packet (buf
, 1, mips_receive_wait
);
2518 nfields
= sscanf (buf
, "0x%x %c 0x%x 0x%x",
2519 &rpid
, &rcmd
, &rresponse
, &rerrflg
);
2520 if (nfields
!= 4 || rcmd
!= cmd
|| rresponse
> 255)
2522 mips_common_breakpoint: Bad response from remote board: %s",
2526 if (mips_check_lsi_error (addr
, rerrflg
))
2529 /* rresponse contains PMON's breakpoint number. Record the
2530 information for this breakpoint so we can clear it later. */
2531 lsi_breakpoints
[rresponse
].type
= type
;
2532 lsi_breakpoints
[rresponse
].addr
= addr
;
2533 lsi_breakpoints
[rresponse
].len
= len
;
2540 /* On non-LSI targets, the breakpoint command has this form:
2541 0x0 <CMD> <ADDR> <MASK> <FLAGS>
2542 <MASK> is a don't care mask for addresses.
2543 <FLAGS> is any combination of `r', `w', or `f' for read/write/fetch.
2547 mask
= calculate_mask (addr
, len
);
2550 if (set
) /* set a breakpoint */
2555 case BREAK_WRITE
: /* write */
2558 case BREAK_READ
: /* read */
2561 case BREAK_ACCESS
: /* read/write */
2564 case BREAK_FETCH
: /* fetch */
2568 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
2572 sprintf (buf
, "0x0 B 0x%s 0x%s %s", phex_nz (addr
, addr_size
),
2573 phex_nz (mask
, addr_size
), flags
);
2578 sprintf (buf
, "0x0 b 0x%s", phex_nz (addr
, addr_size
));
2581 mips_send_packet (buf
, 1);
2583 rlen
= mips_receive_packet (buf
, 1, mips_receive_wait
);
2586 nfields
= sscanf (buf
, "0x%x %c 0x%x 0x%x",
2587 &rpid
, &rcmd
, &rerrflg
, &rresponse
);
2589 if (nfields
!= 4 || rcmd
!= cmd
)
2591 mips_common_breakpoint: Bad response from remote board: %s",
2596 /* Ddb returns "0x0 b 0x16 0x0\000", whereas
2597 Cogent returns "0x0 b 0xffffffff 0x16\000": */
2598 if (mips_monitor
== MON_DDB
)
2599 rresponse
= rerrflg
;
2600 if (rresponse
!= 22) /* invalid argument */
2601 fprintf_unfiltered (gdb_stderr
, "\
2602 mips_common_breakpoint (%s): Got error: 0x%x\n",
2603 paddress (target_gdbarch
, addr
), rresponse
);
2611 send_srec (char *srec
, int len
, CORE_ADDR addr
)
2617 serial_write (mips_desc
, srec
, len
);
2619 ch
= mips_readchar (remote_timeout
);
2623 case SERIAL_TIMEOUT
:
2624 error ("Timeout during download.");
2628 case 0x15: /* NACK */
2629 fprintf_unfiltered (gdb_stderr
, "Download got a NACK at byte %s! Retrying.\n",
2630 paddress (target_gdbarch
, addr
));
2633 error ("Download got unexpected ack char: 0x%x, retrying.\n", ch
);
2638 /* Download a binary file by converting it to S records. */
2641 mips_load_srec (char *args
)
2645 char *buffer
, srec
[1024];
2647 unsigned int srec_frame
= 200;
2649 static int hashmark
= 1;
2651 buffer
= alloca (srec_frame
* 2 + 256);
2653 abfd
= bfd_openr (args
, 0);
2656 printf_filtered ("Unable to open file %s\n", args
);
2660 if (bfd_check_format (abfd
, bfd_object
) == 0)
2662 printf_filtered ("File is not an object file\n");
2666 /* This actually causes a download in the IDT binary format: */
2667 mips_send_command (LOAD_CMD
, 0);
2669 for (s
= abfd
->sections
; s
; s
= s
->next
)
2671 if (s
->flags
& SEC_LOAD
)
2673 unsigned int numbytes
;
2675 /* FIXME! vma too small????? */
2676 printf_filtered ("%s\t: 0x%4lx .. 0x%4lx ", s
->name
,
2678 (long) (s
->vma
+ bfd_get_section_size (s
)));
2679 gdb_flush (gdb_stdout
);
2681 for (i
= 0; i
< bfd_get_section_size (s
); i
+= numbytes
)
2683 numbytes
= min (srec_frame
, bfd_get_section_size (s
) - i
);
2685 bfd_get_section_contents (abfd
, s
, buffer
, i
, numbytes
);
2687 reclen
= mips_make_srec (srec
, '3', s
->vma
+ i
,
2689 send_srec (srec
, reclen
, s
->vma
+ i
);
2691 if (deprecated_ui_load_progress_hook
)
2692 deprecated_ui_load_progress_hook (s
->name
, i
);
2696 putchar_unfiltered ('#');
2697 gdb_flush (gdb_stdout
);
2700 } /* Per-packet (or S-record) loop */
2702 putchar_unfiltered ('\n');
2703 } /* Loadable sections */
2706 putchar_unfiltered ('\n');
2708 /* Write a type 7 terminator record. no data for a type 7, and there
2709 is no data, so len is 0. */
2711 reclen
= mips_make_srec (srec
, '7', abfd
->start_address
, NULL
, 0);
2713 send_srec (srec
, reclen
, abfd
->start_address
);
2715 serial_flush_input (mips_desc
);
2719 * mips_make_srec -- make an srecord. This writes each line, one at a
2720 * time, each with it's own header and trailer line.
2721 * An srecord looks like this:
2723 * byte count-+ address
2724 * start ---+ | | data +- checksum
2726 * S01000006F6B692D746573742E73726563E4
2727 * S315000448600000000000000000FC00005900000000E9
2728 * S31A0004000023C1400037DE00F023604000377B009020825000348D
2729 * S30B0004485A0000000000004E
2732 * S<type><length><address><data><checksum>
2736 * is the number of bytes following upto the checksum. Note that
2737 * this is not the number of chars following, since it takes two
2738 * chars to represent a byte.
2742 * 1) two byte address data record
2743 * 2) three byte address data record
2744 * 3) four byte address data record
2745 * 7) four byte address termination record
2746 * 8) three byte address termination record
2747 * 9) two byte address termination record
2750 * is the start address of the data following, or in the case of
2751 * a termination record, the start address of the image
2755 * is the sum of all the raw byte data in the record, from the length
2756 * upwards, modulo 256 and subtracted from 255.
2758 * This routine returns the length of the S-record.
2763 mips_make_srec (char *buf
, int type
, CORE_ADDR memaddr
, unsigned char *myaddr
,
2766 unsigned char checksum
;
2769 /* Create the header for the srec. addr_size is the number of bytes in the address,
2770 and 1 is the number of bytes in the count. */
2772 /* FIXME!! bigger buf required for 64-bit! */
2775 buf
[2] = len
+ 4 + 1; /* len + 4 byte address + 1 byte checksum */
2776 /* This assumes S3 style downloads (4byte addresses). There should
2777 probably be a check, or the code changed to make it more
2779 buf
[3] = memaddr
>> 24;
2780 buf
[4] = memaddr
>> 16;
2781 buf
[5] = memaddr
>> 8;
2783 memcpy (&buf
[7], myaddr
, len
);
2785 /* Note that the checksum is calculated on the raw data, not the
2786 hexified data. It includes the length, address and the data
2787 portions of the packet. */
2789 buf
+= 2; /* Point at length byte */
2790 for (i
= 0; i
< len
+ 4 + 1; i
++)
2798 /* The following manifest controls whether we enable the simple flow
2799 control support provided by the monitor. If enabled the code will
2800 wait for an affirmative ACK between transmitting packets. */
2801 #define DOETXACK (1)
2803 /* The PMON fast-download uses an encoded packet format constructed of
2804 3byte data packets (encoded as 4 printable ASCII characters), and
2805 escape sequences (preceded by a '/'):
2808 'C' compare checksum (12bit value, not included in checksum calculation)
2809 'S' define symbol name (for addr) terminated with "," and padded to 4char boundary
2810 'Z' zero fill multiple of 3bytes
2811 'B' byte (12bit encoded value, of 8bit data)
2812 'A' address (36bit encoded value)
2813 'E' define entry as original address, and exit load
2815 The packets are processed in 4 character chunks, so the escape
2816 sequences that do not have any data (or variable length data)
2817 should be padded to a 4 character boundary. The decoder will give
2818 an error if the complete message block size is not a multiple of
2819 4bytes (size of record).
2821 The encoding of numbers is done in 6bit fields. The 6bit value is
2822 used to index into this string to get the specific character
2823 encoding for the value: */
2824 static char encoding
[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789,.";
2826 /* Convert the number of bits required into an encoded number, 6bits
2827 at a time (range 0..63). Keep a checksum if required (passed
2828 pointer non-NULL). The function returns the number of encoded
2829 characters written into the buffer. */
2831 pmon_makeb64 (unsigned long v
, char *p
, int n
, int *chksum
)
2833 int count
= (n
/ 6);
2837 fprintf_unfiltered (gdb_stderr
,
2838 "Fast encoding bitcount must be a multiple of 12bits: %dbit%s\n", n
, (n
== 1) ? "" : "s");
2843 fprintf_unfiltered (gdb_stderr
,
2844 "Fast encoding cannot process more than 36bits at the moment: %dbits\n", n
);
2848 /* Deal with the checksum: */
2854 *chksum
+= ((v
>> 24) & 0xFFF);
2856 *chksum
+= ((v
>> 12) & 0xFFF);
2858 *chksum
+= ((v
>> 0) & 0xFFF);
2865 *p
++ = encoding
[(v
>> n
) & 0x3F];
2872 /* Shorthand function (that could be in-lined) to output the zero-fill
2873 escape sequence into the data stream. */
2875 pmon_zeroset (int recsize
, char **buff
, int *amount
, unsigned int *chksum
)
2879 sprintf (*buff
, "/Z");
2880 count
= pmon_makeb64 (*amount
, (*buff
+ 2), 12, chksum
);
2881 *buff
+= (count
+ 2);
2883 return (recsize
+ count
+ 2);
2887 pmon_checkset (int recsize
, char **buff
, int *value
)
2891 /* Add the checksum (without updating the value): */
2892 sprintf (*buff
, "/C");
2893 count
= pmon_makeb64 (*value
, (*buff
+ 2), 12, NULL
);
2894 *buff
+= (count
+ 2);
2895 sprintf (*buff
, "\n");
2896 *buff
+= 2; /* include zero terminator */
2897 /* Forcing a checksum validation clears the sum: */
2899 return (recsize
+ count
+ 3);
2902 /* Amount of padding we leave after at the end of the output buffer,
2903 for the checksum and line termination characters: */
2904 #define CHECKSIZE (4 + 4 + 4 + 2)
2905 /* zero-fill, checksum, transfer end and line termination space. */
2907 /* The amount of binary data loaded from the object file in a single
2909 #define BINCHUNK (1024)
2911 /* Maximum line of data accepted by the monitor: */
2912 #define MAXRECSIZE (550)
2913 /* NOTE: This constant depends on the monitor being used. This value
2914 is for PMON 5.x on the Cogent Vr4300 board. */
2917 pmon_make_fastrec (char **outbuf
, unsigned char *inbuf
, int *inptr
,
2918 int inamount
, int *recsize
, unsigned int *csum
,
2919 unsigned int *zerofill
)
2924 /* This is a simple check to ensure that our data will fit within
2925 the maximum allowable record size. Each record output is 4bytes
2926 in length. We must allow space for a pending zero fill command,
2927 the record, and a checksum record. */
2928 while ((*recsize
< (MAXRECSIZE
- CHECKSIZE
)) && ((inamount
- *inptr
) > 0))
2930 /* Process the binary data: */
2931 if ((inamount
- *inptr
) < 3)
2934 *recsize
= pmon_zeroset (*recsize
, &p
, zerofill
, csum
);
2936 count
= pmon_makeb64 (inbuf
[*inptr
], &p
[2], 12, csum
);
2938 *recsize
+= (2 + count
);
2943 unsigned int value
= ((inbuf
[*inptr
+ 0] << 16) | (inbuf
[*inptr
+ 1] << 8) | inbuf
[*inptr
+ 2]);
2944 /* Simple check for zero data. TODO: A better check would be
2945 to check the last, and then the middle byte for being zero
2946 (if the first byte is not). We could then check for
2947 following runs of zeros, and if above a certain size it is
2948 worth the 4 or 8 character hit of the byte insertions used
2949 to pad to the start of the zeroes. NOTE: This also depends
2950 on the alignment at the end of the zero run. */
2951 if (value
== 0x00000000)
2954 if (*zerofill
== 0xFFF) /* 12bit counter */
2955 *recsize
= pmon_zeroset (*recsize
, &p
, zerofill
, csum
);
2960 *recsize
= pmon_zeroset (*recsize
, &p
, zerofill
, csum
);
2961 count
= pmon_makeb64 (value
, p
, 24, csum
);
2974 pmon_check_ack (char *mesg
)
2976 #if defined(DOETXACK)
2981 c
= serial_readchar (udp_in_use
? udp_desc
: mips_desc
,
2983 if ((c
== SERIAL_TIMEOUT
) || (c
!= 0x06))
2985 fprintf_unfiltered (gdb_stderr
,
2986 "Failed to receive valid ACK for %s\n", mesg
);
2987 return (-1); /* terminate the download */
2990 #endif /* DOETXACK */
2994 /* pmon_download - Send a sequence of characters to the PMON download port,
2995 which is either a serial port or a UDP socket. */
2998 pmon_start_download (void)
3002 /* Create the temporary download file. */
3003 if ((tftp_file
= fopen (tftp_localname
, "w")) == NULL
)
3004 perror_with_name (tftp_localname
);
3008 mips_send_command (udp_in_use
? LOAD_CMD_UDP
: LOAD_CMD
, 0);
3009 mips_expect ("Downloading from ");
3010 mips_expect (udp_in_use
? "udp" : "tty0");
3011 mips_expect (", ^C to abort\r\n");
3016 mips_expect_download (char *string
)
3018 if (!mips_expect (string
))
3020 fprintf_unfiltered (gdb_stderr
, "Load did not complete successfully.\n");
3022 remove (tftp_localname
); /* Remove temporary file */
3030 pmon_check_entry_address (char *entry_address
, int final
)
3032 char hexnumber
[9]; /* includes '\0' space */
3033 mips_expect_timeout (entry_address
, tftp_in_use
? 15 : remote_timeout
);
3034 sprintf (hexnumber
, "%x", final
);
3035 mips_expect (hexnumber
);
3036 mips_expect ("\r\n");
3040 pmon_check_total (int bintotal
)
3042 char hexnumber
[9]; /* includes '\0' space */
3043 mips_expect ("\r\ntotal = 0x");
3044 sprintf (hexnumber
, "%x", bintotal
);
3045 mips_expect (hexnumber
);
3046 return mips_expect_download (" bytes\r\n");
3050 pmon_end_download (int final
, int bintotal
)
3052 char hexnumber
[9]; /* includes '\0' space */
3056 static char *load_cmd_prefix
= "load -b -s ";
3060 /* Close off the temporary file containing the load data. */
3064 /* Make the temporary file readable by the world. */
3065 if (stat (tftp_localname
, &stbuf
) == 0)
3066 chmod (tftp_localname
, stbuf
.st_mode
| S_IROTH
);
3068 /* Must reinitialize the board to prevent PMON from crashing. */
3069 mips_send_command ("initEther\r", -1);
3071 /* Send the load command. */
3072 cmd
= xmalloc (strlen (load_cmd_prefix
) + strlen (tftp_name
) + 2);
3073 strcpy (cmd
, load_cmd_prefix
);
3074 strcat (cmd
, tftp_name
);
3076 mips_send_command (cmd
, 0);
3078 if (!mips_expect_download ("Downloading from "))
3080 if (!mips_expect_download (tftp_name
))
3082 if (!mips_expect_download (", ^C to abort\r\n"))
3086 /* Wait for the stuff that PMON prints after the load has completed.
3087 The timeout value for use in the tftp case (15 seconds) was picked
3088 arbitrarily but might be too small for really large downloads. FIXME. */
3089 switch (mips_monitor
)
3092 pmon_check_ack ("termination");
3093 pmon_check_entry_address ("Entry address is ", final
);
3094 if (!pmon_check_total (bintotal
))
3098 pmon_check_entry_address ("Entry Address = ", final
);
3099 pmon_check_ack ("termination");
3100 if (!pmon_check_total (bintotal
))
3106 remove (tftp_localname
); /* Remove temporary file */
3110 pmon_download (char *buffer
, int length
)
3113 fwrite (buffer
, 1, length
, tftp_file
);
3115 serial_write (udp_in_use
? udp_desc
: mips_desc
, buffer
, length
);
3119 pmon_load_fast (char *file
)
3123 unsigned char *binbuf
;
3126 unsigned int csum
= 0;
3127 int hashmark
= !tftp_in_use
;
3132 buffer
= (char *) xmalloc (MAXRECSIZE
+ 1);
3133 binbuf
= (unsigned char *) xmalloc (BINCHUNK
);
3135 abfd
= bfd_openr (file
, 0);
3138 printf_filtered ("Unable to open file %s\n", file
);
3142 if (bfd_check_format (abfd
, bfd_object
) == 0)
3144 printf_filtered ("File is not an object file\n");
3148 /* Setup the required download state: */
3149 mips_send_command ("set dlproto etxack\r", -1);
3150 mips_send_command ("set dlecho off\r", -1);
3151 /* NOTE: We get a "cannot set variable" message if the variable is
3152 already defined to have the argument we give. The code doesn't
3153 care, since it just scans to the next prompt anyway. */
3154 /* Start the download: */
3155 pmon_start_download ();
3157 /* Zero the checksum */
3158 sprintf (buffer
, "/Kxx\n");
3159 reclen
= strlen (buffer
);
3160 pmon_download (buffer
, reclen
);
3161 finished
= pmon_check_ack ("/Kxx");
3163 for (s
= abfd
->sections
; s
&& !finished
; s
= s
->next
)
3164 if (s
->flags
& SEC_LOAD
) /* only deal with loadable sections */
3166 bintotal
+= bfd_get_section_size (s
);
3167 final
= (s
->vma
+ bfd_get_section_size (s
));
3169 printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s
->name
, (unsigned int) s
->vma
,
3170 (unsigned int) (s
->vma
+ bfd_get_section_size (s
)));
3171 gdb_flush (gdb_stdout
);
3173 /* Output the starting address */
3174 sprintf (buffer
, "/A");
3175 reclen
= pmon_makeb64 (s
->vma
, &buffer
[2], 36, &csum
);
3176 buffer
[2 + reclen
] = '\n';
3177 buffer
[3 + reclen
] = '\0';
3178 reclen
+= 3; /* for the initial escape code and carriage return */
3179 pmon_download (buffer
, reclen
);
3180 finished
= pmon_check_ack ("/A");
3184 unsigned int binamount
;
3185 unsigned int zerofill
= 0;
3192 i
< bfd_get_section_size (s
) && !finished
;
3197 binamount
= min (BINCHUNK
, bfd_get_section_size (s
) - i
);
3199 bfd_get_section_contents (abfd
, s
, binbuf
, i
, binamount
);
3201 /* This keeps a rolling checksum, until we decide to output
3203 for (; ((binamount
- binptr
) > 0);)
3205 pmon_make_fastrec (&bp
, binbuf
, &binptr
, binamount
,
3206 &reclen
, &csum
, &zerofill
);
3207 if (reclen
>= (MAXRECSIZE
- CHECKSIZE
))
3209 reclen
= pmon_checkset (reclen
, &bp
, &csum
);
3210 pmon_download (buffer
, reclen
);
3211 finished
= pmon_check_ack ("data record");
3214 zerofill
= 0; /* do not transmit pending zerofills */
3218 if (deprecated_ui_load_progress_hook
)
3219 deprecated_ui_load_progress_hook (s
->name
, i
);
3223 putchar_unfiltered ('#');
3224 gdb_flush (gdb_stdout
);
3228 reclen
= 0; /* buffer processed */
3233 /* Ensure no out-standing zerofill requests: */
3235 reclen
= pmon_zeroset (reclen
, &bp
, &zerofill
, &csum
);
3237 /* and then flush the line: */
3240 reclen
= pmon_checkset (reclen
, &bp
, &csum
);
3241 /* Currently pmon_checkset outputs the line terminator by
3242 default, so we write out the buffer so far: */
3243 pmon_download (buffer
, reclen
);
3244 finished
= pmon_check_ack ("record remnant");
3248 putchar_unfiltered ('\n');
3251 /* Terminate the transfer. We know that we have an empty output
3252 buffer at this point. */
3253 sprintf (buffer
, "/E/E\n"); /* include dummy padding characters */
3254 reclen
= strlen (buffer
);
3255 pmon_download (buffer
, reclen
);
3258 { /* Ignore the termination message: */
3259 serial_flush_input (udp_in_use
? udp_desc
: mips_desc
);
3262 { /* Deal with termination message: */
3263 pmon_end_download (final
, bintotal
);
3269 /* mips_load -- download a file. */
3272 mips_load (char *file
, int from_tty
)
3274 struct regcache
*regcache
;
3276 /* Get the board out of remote debugging mode. */
3277 if (mips_exit_debug ())
3278 error ("mips_load: Couldn't get into monitor mode.");
3280 if (mips_monitor
!= MON_IDT
)
3281 pmon_load_fast (file
);
3283 mips_load_srec (file
);
3287 /* Finally, make the PC point at the start address */
3288 regcache
= get_current_regcache ();
3289 if (mips_monitor
!= MON_IDT
)
3291 /* Work around problem where PMON monitor updates the PC after a load
3292 to a different value than GDB thinks it has. The following ensures
3293 that the regcache_write_pc() WILL update the PC value: */
3294 regcache_invalidate (regcache
,
3295 gdbarch_pc_regnum (get_regcache_arch (regcache
)));
3298 regcache_write_pc (regcache
, bfd_get_start_address (exec_bfd
));
3300 inferior_ptid
= null_ptid
; /* No process now */
3302 /* This is necessary because many things were based on the PC at the time that
3303 we attached to the monitor, which is no longer valid now that we have loaded
3304 new code (and just changed the PC). Another way to do this might be to call
3305 normal_stop, except that the stack may not be valid, and things would get
3306 horribly confused... */
3308 clear_symtab_users ();
3312 /* Pass the command argument as a packet to PMON verbatim. */
3315 pmon_command (char *args
, int from_tty
)
3317 char buf
[DATA_MAXLEN
+ 1];
3320 sprintf (buf
, "0x0 %s", args
);
3321 mips_send_packet (buf
, 1);
3322 printf_filtered ("Send packet: %s\n", buf
);
3324 rlen
= mips_receive_packet (buf
, 1, mips_receive_wait
);
3326 printf_filtered ("Received packet: %s\n", buf
);
3329 extern initialize_file_ftype _initialize_remote_mips
; /* -Wmissing-prototypes */
3332 _initialize_remote_mips (void)
3334 /* Initialize the fields in mips_ops that are common to all four targets. */
3335 mips_ops
.to_longname
= "Remote MIPS debugging over serial line";
3336 mips_ops
.to_close
= mips_close
;
3337 mips_ops
.to_detach
= mips_detach
;
3338 mips_ops
.to_resume
= mips_resume
;
3339 mips_ops
.to_fetch_registers
= mips_fetch_registers
;
3340 mips_ops
.to_store_registers
= mips_store_registers
;
3341 mips_ops
.to_prepare_to_store
= mips_prepare_to_store
;
3342 mips_ops
.deprecated_xfer_memory
= mips_xfer_memory
;
3343 mips_ops
.to_files_info
= mips_files_info
;
3344 mips_ops
.to_insert_breakpoint
= mips_insert_breakpoint
;
3345 mips_ops
.to_remove_breakpoint
= mips_remove_breakpoint
;
3346 mips_ops
.to_insert_watchpoint
= mips_insert_watchpoint
;
3347 mips_ops
.to_remove_watchpoint
= mips_remove_watchpoint
;
3348 mips_ops
.to_stopped_by_watchpoint
= mips_stopped_by_watchpoint
;
3349 mips_ops
.to_can_use_hw_breakpoint
= mips_can_use_watchpoint
;
3350 mips_ops
.to_kill
= mips_kill
;
3351 mips_ops
.to_load
= mips_load
;
3352 mips_ops
.to_create_inferior
= mips_create_inferior
;
3353 mips_ops
.to_mourn_inferior
= mips_mourn_inferior
;
3354 mips_ops
.to_log_command
= serial_log_command
;
3355 mips_ops
.to_stratum
= process_stratum
;
3356 mips_ops
.to_has_all_memory
= default_child_has_all_memory
;
3357 mips_ops
.to_has_memory
= default_child_has_memory
;
3358 mips_ops
.to_has_stack
= default_child_has_stack
;
3359 mips_ops
.to_has_registers
= default_child_has_registers
;
3360 mips_ops
.to_has_execution
= default_child_has_execution
;
3361 mips_ops
.to_magic
= OPS_MAGIC
;
3363 /* Copy the common fields to all four target vectors. */
3364 pmon_ops
= ddb_ops
= lsi_ops
= mips_ops
;
3366 /* Initialize target-specific fields in the target vectors. */
3367 mips_ops
.to_shortname
= "mips";
3368 mips_ops
.to_doc
= "\
3369 Debug a board using the MIPS remote debugging protocol over a serial line.\n\
3370 The argument is the device it is connected to or, if it contains a colon,\n\
3371 HOST:PORT to access a board over a network";
3372 mips_ops
.to_open
= mips_open
;
3373 mips_ops
.to_wait
= mips_wait
;
3375 pmon_ops
.to_shortname
= "pmon";
3376 pmon_ops
.to_doc
= "\
3377 Debug a board using the PMON MIPS remote debugging protocol over a serial\n\
3378 line. The argument is the device it is connected to or, if it contains a\n\
3379 colon, HOST:PORT to access a board over a network";
3380 pmon_ops
.to_open
= pmon_open
;
3381 pmon_ops
.to_wait
= mips_wait
;
3383 ddb_ops
.to_shortname
= "ddb";
3385 Debug a board using the PMON MIPS remote debugging protocol over a serial\n\
3386 line. The first argument is the device it is connected to or, if it contains\n\
3387 a colon, HOST:PORT to access a board over a network. The optional second\n\
3388 parameter is the temporary file in the form HOST:FILENAME to be used for\n\
3389 TFTP downloads to the board. The optional third parameter is the local name\n\
3390 of the TFTP temporary file, if it differs from the filename seen by the board.";
3391 ddb_ops
.to_open
= ddb_open
;
3392 ddb_ops
.to_wait
= mips_wait
;
3394 lsi_ops
.to_shortname
= "lsi";
3395 lsi_ops
.to_doc
= pmon_ops
.to_doc
;
3396 lsi_ops
.to_open
= lsi_open
;
3397 lsi_ops
.to_wait
= mips_wait
;
3399 /* Add the targets. */
3400 add_target (&mips_ops
);
3401 add_target (&pmon_ops
);
3402 add_target (&ddb_ops
);
3403 add_target (&lsi_ops
);
3405 add_setshow_zinteger_cmd ("timeout", no_class
, &mips_receive_wait
, _("\
3406 Set timeout in seconds for remote MIPS serial I/O."), _("\
3407 Show timeout in seconds for remote MIPS serial I/O."), NULL
,
3409 NULL
, /* FIXME: i18n: */
3410 &setlist
, &showlist
);
3412 add_setshow_zinteger_cmd ("retransmit-timeout", no_class
,
3413 &mips_retransmit_wait
, _("\
3414 Set retransmit timeout in seconds for remote MIPS serial I/O."), _("\
3415 Show retransmit timeout in seconds for remote MIPS serial I/O."), _("\
3416 This is the number of seconds to wait for an acknowledgement to a packet\n\
3417 before resending the packet."),
3419 NULL
, /* FIXME: i18n: */
3420 &setlist
, &showlist
);
3422 add_setshow_zinteger_cmd ("syn-garbage-limit", no_class
,
3423 &mips_syn_garbage
, _("\
3424 Set the maximum number of characters to ignore when scanning for a SYN."), _("\
3425 Show the maximum number of characters to ignore when scanning for a SYN."), _("\
3426 This is the maximum number of characters GDB will ignore when trying to\n\
3427 synchronize with the remote system. A value of -1 means that there is no\n\
3428 limit. (Note that these characters are printed out even though they are\n\
3431 NULL
, /* FIXME: i18n: */
3432 &setlist
, &showlist
);
3434 add_setshow_string_cmd ("monitor-prompt", class_obscure
,
3435 &mips_monitor_prompt
, _("\
3436 Set the prompt that GDB expects from the monitor."), _("\
3437 Show the prompt that GDB expects from the monitor."), NULL
,
3439 NULL
, /* FIXME: i18n: */
3440 &setlist
, &showlist
);
3442 add_setshow_zinteger_cmd ("monitor-warnings", class_obscure
,
3443 &monitor_warnings
, _("\
3444 Set printing of monitor warnings."), _("\
3445 Show printing of monitor warnings."), _("\
3446 When enabled, monitor warnings about hardware breakpoints will be displayed."),
3448 NULL
, /* FIXME: i18n: */
3449 &setlist
, &showlist
);
3451 add_com ("pmon", class_obscure
, pmon_command
,
3452 _("Send a packet to PMON (must be in debug mode)."));
3454 add_setshow_boolean_cmd ("mask-address", no_class
, &mask_address_p
, _("\
3455 Set zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\
3456 Show zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\
3457 Use \"on\" to enable the masking and \"off\" to disable it."),
3459 NULL
, /* FIXME: i18n: */
3460 &setlist
, &showlist
);