1 /* Target dependent code for the Fujitsu SPARClite for GDB, the GNU debugger.
2 Copyright 1994, 1995, 1996, 1999 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
23 #include "breakpoint.h"
26 #include <sys/types.h>
28 #if (!defined(__GO32__) && !defined(_WIN32)) || defined(__CYGWIN32__)
31 #include <sys/socket.h>
32 #include <netinet/in.h>
36 static struct target_ops sparclite_ops
;
38 static char *remote_target_name
= NULL
;
39 static serial_t remote_desc
= NULL
;
40 static int serial_flag
;
42 static int udp_fd
= -1;
45 static serial_t
open_tty (char *name
);
46 static int send_resp (serial_t desc
, char c
);
47 static void close_tty (void * ignore
);
49 static int recv_udp_buf (int fd
, unsigned char *buf
, int len
, int timeout
);
50 static int send_udp_buf (int fd
, unsigned char *buf
, int len
);
52 static void sparclite_open (char *name
, int from_tty
);
53 static void sparclite_close (int quitting
);
54 static void download (char *target_name
, char *args
, int from_tty
,
55 void (*write_routine
) (bfd
* from_bfd
,
58 bfd_vma to_addr
, int len
),
59 void (*start_routine
) (bfd_vma entry
));
60 static void sparclite_serial_start (bfd_vma entry
);
61 static void sparclite_serial_write (bfd
* from_bfd
, asection
* from_sec
,
63 bfd_vma to_addr
, int len
);
65 static unsigned short calc_checksum (unsigned char *buffer
, int count
);
66 static void sparclite_udp_start (bfd_vma entry
);
67 static void sparclite_udp_write (bfd
* from_bfd
, asection
* from_sec
,
68 file_ptr from_addr
, bfd_vma to_addr
,
71 static void sparclite_download (char *filename
, int from_tty
);
73 #define DDA2_SUP_ASI 0xb000000
74 #define DDA1_SUP_ASI 0xb0000
76 #define DDA2_ASI_MASK 0xff000000
77 #define DDA1_ASI_MASK 0xff0000
78 #define DIA2_SUP_MODE 0x8000
79 #define DIA1_SUP_MODE 0x4000
80 #define DDA2_ENABLE 0x100
81 #define DDA1_ENABLE 0x80
82 #define DIA2_ENABLE 0x40
83 #define DIA1_ENABLE 0x20
84 #define DSINGLE_STEP 0x10 /* not used */
85 #define DDV_TYPE_MASK 0xc
86 #define DDV_TYPE_LOAD 0x0
87 #define DDV_TYPE_STORE 0x4
88 #define DDV_TYPE_ACCESS 0x8
89 #define DDV_TYPE_ALWAYS 0xc
94 sparclite_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
98 dcr
= read_register (DCR_REGNUM
);
100 if (!(dcr
& DDA1_ENABLE
))
102 write_register (DDA1_REGNUM
, addr
);
103 dcr
&= ~(DDA1_ASI_MASK
| DDV_TYPE_MASK
);
104 dcr
|= (DDA1_SUP_ASI
| DDA1_ENABLE
);
107 write_register (DDV1_REGNUM
, 0);
108 write_register (DDV2_REGNUM
, 0xffffffff);
109 dcr
|= (DDV_TYPE_LOAD
& (~DDV_COND
& ~DDV_MASK
));
113 write_register (DDV1_REGNUM
, 0);
114 write_register (DDV2_REGNUM
, 0xffffffff);
115 dcr
|= (DDV_TYPE_STORE
& (~DDV_COND
& ~DDV_MASK
));
119 write_register (DDV1_REGNUM
, 0);
120 write_register (DDV2_REGNUM
, 0xffffffff);
121 dcr
|= (DDV_TYPE_ACCESS
);
123 write_register (DCR_REGNUM
, dcr
);
125 else if (!(dcr
& DDA2_ENABLE
))
127 write_register (DDA2_REGNUM
, addr
);
128 dcr
&= ~(DDA2_ASI_MASK
& DDV_TYPE_MASK
);
129 dcr
|= (DDA2_SUP_ASI
| DDA2_ENABLE
);
132 write_register (DDV1_REGNUM
, 0);
133 write_register (DDV2_REGNUM
, 0xffffffff);
134 dcr
|= (DDV_TYPE_LOAD
& ~DDV_COND
& ~DDV_MASK
);
138 write_register (DDV1_REGNUM
, 0);
139 write_register (DDV2_REGNUM
, 0xffffffff);
140 dcr
|= (DDV_TYPE_STORE
& ~DDV_COND
& ~DDV_MASK
);
144 write_register (DDV1_REGNUM
, 0);
145 write_register (DDV2_REGNUM
, 0xffffffff);
146 dcr
|= (DDV_TYPE_ACCESS
);
148 write_register (DCR_REGNUM
, dcr
);
157 sparclite_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
159 CORE_ADDR dcr
, dda1
, dda2
;
161 dcr
= read_register (DCR_REGNUM
);
162 dda1
= read_register (DDA1_REGNUM
);
163 dda2
= read_register (DDA2_REGNUM
);
165 if ((dcr
& DDA1_ENABLE
) && addr
== dda1
)
166 write_register (DCR_REGNUM
, (dcr
& ~DDA1_ENABLE
));
167 else if ((dcr
& DDA2_ENABLE
) && addr
== dda2
)
168 write_register (DCR_REGNUM
, (dcr
& ~DDA2_ENABLE
));
176 sparclite_insert_hw_breakpoint (CORE_ADDR addr
, int len
)
180 dcr
= read_register (DCR_REGNUM
);
182 if (!(dcr
& DIA1_ENABLE
))
184 write_register (DIA1_REGNUM
, addr
);
185 write_register (DCR_REGNUM
, (dcr
| DIA1_ENABLE
| DIA1_SUP_MODE
));
187 else if (!(dcr
& DIA2_ENABLE
))
189 write_register (DIA2_REGNUM
, addr
);
190 write_register (DCR_REGNUM
, (dcr
| DIA2_ENABLE
| DIA2_SUP_MODE
));
199 sparclite_remove_hw_breakpoint (CORE_ADDR addr
, int shadow
)
201 CORE_ADDR dcr
, dia1
, dia2
;
203 dcr
= read_register (DCR_REGNUM
);
204 dia1
= read_register (DIA1_REGNUM
);
205 dia2
= read_register (DIA2_REGNUM
);
207 if ((dcr
& DIA1_ENABLE
) && addr
== dia1
)
208 write_register (DCR_REGNUM
, (dcr
& ~DIA1_ENABLE
));
209 else if ((dcr
& DIA2_ENABLE
) && addr
== dia2
)
210 write_register (DCR_REGNUM
, (dcr
& ~DIA2_ENABLE
));
218 sparclite_check_watch_resources (int type
, int cnt
, int ot
)
220 /* Watchpoints not supported on simulator. */
221 if (strcmp (target_shortname
, "sim") == 0)
224 if (type
== bp_hardware_breakpoint
)
226 if (TARGET_HW_BREAK_LIMIT
== 0)
228 else if (cnt
<= TARGET_HW_BREAK_LIMIT
)
233 if (TARGET_HW_WATCH_LIMIT
== 0)
237 else if (cnt
<= TARGET_HW_WATCH_LIMIT
)
244 sparclite_stopped_data_address (void)
246 CORE_ADDR dsr
, dda1
, dda2
;
248 dsr
= read_register (DSR_REGNUM
);
249 dda1
= read_register (DDA1_REGNUM
);
250 dda2
= read_register (DDA2_REGNUM
);
261 open_tty (char *name
)
265 desc
= SERIAL_OPEN (name
);
267 perror_with_name (name
);
271 if (SERIAL_SETBAUDRATE (desc
, baud_rate
))
274 perror_with_name (name
);
280 SERIAL_FLUSH_INPUT (desc
);
285 /* Read a single character from the remote end, masking it down to 7 bits. */
288 readchar (serial_t desc
, int timeout
)
293 ch
= SERIAL_READCHAR (desc
, timeout
);
298 error ("SPARClite remote connection closed");
300 perror_with_name ("SPARClite communication error");
302 error ("SPARClite remote timeout");
304 if (remote_debug
> 0)
306 sprintf (s
, "[%02x]", ch
& 0xff);
307 puts_debug ("read -->", s
, "<--");
314 debug_serial_write (serial_t desc
, char *buf
, int len
)
318 SERIAL_WRITE (desc
, buf
, len
);
319 if (remote_debug
> 0)
323 sprintf (s
, "[%02x]", *buf
& 0xff);
324 puts_debug ("Sent -->", s
, "<--");
332 send_resp (serial_t desc
, char c
)
334 debug_serial_write (desc
, &c
, 1);
335 return readchar (desc
, remote_timeout
);
339 close_tty (void *ignore
)
344 SERIAL_CLOSE (remote_desc
);
351 recv_udp_buf (int fd
, unsigned char *buf
, int len
, int timeout
)
357 FD_SET (fd
, &readfds
);
361 struct timeval timebuf
;
363 timebuf
.tv_sec
= timeout
;
365 cc
= select (fd
+ 1, &readfds
, 0, 0, &timebuf
);
368 cc
= select (fd
+ 1, &readfds
, 0, 0, 0);
374 perror_with_name ("recv_udp_buf: Bad return value from select:");
376 cc
= recv (fd
, buf
, len
, 0);
379 perror_with_name ("Got an error from recv: ");
383 send_udp_buf (int fd
, unsigned char *buf
, int len
)
387 cc
= send (fd
, buf
, len
, 0);
393 perror_with_name ("Got an error from send: ");
395 error ("Short count in send: tried %d, sent %d\n", len
, cc
);
397 #endif /* HAVE_SOCKETS */
400 sparclite_open (char *name
, int from_tty
)
402 struct cleanup
*old_chain
;
407 error ("You need to specify what device or hostname is associated with the SparcLite board.");
409 target_preopen (from_tty
);
411 unpush_target (&sparclite_ops
);
413 if (remote_target_name
)
414 xfree (remote_target_name
);
416 remote_target_name
= strsave (name
);
418 /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can
419 mean either a serial port on a terminal server, or the IP address of a
420 SPARClite demo board. If there's no colon, then it pretty much has to be
421 a local device (except for DOS... grrmble) */
423 p
= strchr (name
, ' ');
428 while ((*p
!= '\000') && isspace (*p
))
431 if (strncmp (name
, "serial", strlen (name
)) == 0)
433 else if (strncmp (name
, "udp", strlen (name
)) == 0)
436 error ("Must specify either `serial' or `udp'.");
442 if (!strchr (name
, ':'))
443 serial_flag
= 1; /* No colon is unambiguous (local device) */
445 error ("Usage: target sparclite serial /dev/ttyb\n\
446 or: target sparclite udp host");
451 remote_desc
= open_tty (p
);
453 old_chain
= make_cleanup (close_tty
, 0 /*ignore*/);
455 c
= send_resp (remote_desc
, 0x00);
458 error ("Unknown response (0x%x) from SparcLite. Try resetting the board.",
461 c
= send_resp (remote_desc
, 0x55);
464 error ("Sparclite appears to be ill.");
470 struct sockaddr_in sockaddr
;
471 unsigned char buffer
[100];
474 /* Setup the socket. Must be raw UDP. */
476 he
= gethostbyname (p
);
479 error ("No such host %s.", p
);
481 udp_fd
= socket (PF_INET
, SOCK_DGRAM
, 0);
483 old_chain
= make_cleanup (close
, udp_fd
);
485 sockaddr
.sin_family
= PF_INET
;
486 sockaddr
.sin_port
= htons (7000);
487 memcpy (&sockaddr
.sin_addr
.s_addr
, he
->h_addr
, sizeof (struct in_addr
));
489 if (connect (udp_fd
, &sockaddr
, sizeof (sockaddr
)))
490 perror_with_name ("Connect failed");
495 send_udp_buf (udp_fd
, buffer
, 2); /* Request version */
496 cc
= recv_udp_buf (udp_fd
, buffer
, sizeof (buffer
), 5); /* Get response */
498 error ("SPARClite isn't responding.");
501 error ("SPARClite appears to be ill.");
503 error ("UDP downloading is not supported for DOS hosts.");
504 #endif /* HAVE_SOCKETS */
507 printf_unfiltered ("[SPARClite appears to be alive]\n");
509 push_target (&sparclite_ops
);
511 discard_cleanups (old_chain
);
517 sparclite_close (int quitting
)
522 else if (udp_fd
!= -1)
527 #define LOAD_ADDRESS 0x40000000
530 download (char *target_name
, char *args
, int from_tty
,
531 void (*write_routine
) (bfd
*from_bfd
, asection
*from_sec
,
532 file_ptr from_addr
, bfd_vma to_addr
, int len
),
533 void (*start_routine
) (bfd_vma entry
))
535 struct cleanup
*old_chain
;
540 #define WRITESIZE 1024
549 while (*args
!= '\000')
553 while (isspace (*args
))
558 while ((*args
!= '\000') && !isspace (*args
))
566 else if (strncmp (arg
, "-quiet", strlen (arg
)) == 0)
568 else if (strncmp (arg
, "-nostart", strlen (arg
)) == 0)
571 error ("unknown option `%s'", arg
);
575 filename
= get_exec_file (1);
577 pbfd
= bfd_openr (filename
, gnutarget
);
580 perror_with_name (filename
);
583 old_chain
= make_cleanup_bfd_close (pbfd
);
585 if (!bfd_check_format (pbfd
, bfd_object
))
586 error ("\"%s\" is not an object file: %s", filename
,
587 bfd_errmsg (bfd_get_error ()));
589 for (section
= pbfd
->sections
; section
; section
= section
->next
)
591 if (bfd_get_section_flags (pbfd
, section
) & SEC_LOAD
)
593 bfd_vma section_address
;
594 bfd_size_type section_size
;
596 const char *section_name
;
598 section_name
= bfd_get_section_name (pbfd
, section
);
600 section_address
= bfd_get_section_vma (pbfd
, section
);
602 /* Adjust sections from a.out files, since they don't
603 carry their addresses with. */
604 if (bfd_get_flavour (pbfd
) == bfd_target_aout_flavour
)
606 if (strcmp (section_name
, ".text") == 0)
607 section_address
= bfd_get_start_address (pbfd
);
608 else if (strcmp (section_name
, ".data") == 0)
610 /* Read the first 8 bytes of the data section.
611 There should be the string 'DaTa' followed by
612 a word containing the actual section address. */
615 char signature
[4]; /* 'DaTa' */
616 unsigned char sdata
[4]; /* &sdata */
619 bfd_get_section_contents (pbfd
, section
, &marker
, 0,
621 if (strncmp (marker
.signature
, "DaTa", 4) == 0)
623 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
624 section_address
= bfd_getb32 (marker
.sdata
);
626 section_address
= bfd_getl32 (marker
.sdata
);
631 section_size
= bfd_get_section_size_before_reloc (section
);
634 printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
635 bfd_get_section_name (pbfd
, section
),
640 while (section_size
> 0)
643 static char inds
[] = "|/-\\";
648 count
= min (section_size
, WRITESIZE
);
650 write_routine (pbfd
, section
, fptr
, section_address
, count
);
654 printf_unfiltered ("\r%c", inds
[k
++ % 4]);
655 gdb_flush (gdb_stdout
);
658 section_address
+= count
;
660 section_size
-= count
;
667 entry
= bfd_get_start_address (pbfd
);
670 printf_unfiltered ("[Starting %s at 0x%x]\n", filename
, entry
);
672 start_routine (entry
);
675 do_cleanups (old_chain
);
679 sparclite_serial_start (bfd_vma entry
)
685 store_unsigned_integer (buffer
+ 1, 4, entry
);
687 debug_serial_write (remote_desc
, buffer
, 1 + 4);
688 i
= readchar (remote_desc
, remote_timeout
);
690 error ("Can't start SparcLite. Error code %d\n", i
);
694 sparclite_serial_write (bfd
*from_bfd
, asection
*from_sec
, file_ptr from_addr
,
695 bfd_vma to_addr
, int len
)
697 char buffer
[4 + 4 + WRITESIZE
]; /* addr + len + data */
698 unsigned char checksum
;
701 store_unsigned_integer (buffer
, 4, to_addr
); /* Address */
702 store_unsigned_integer (buffer
+ 4, 4, len
); /* Length */
704 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 8, from_addr
, len
);
707 for (i
= 0; i
< len
; i
++)
708 checksum
+= buffer
[8 + i
];
710 i
= send_resp (remote_desc
, 0x01);
713 error ("Bad response from load command (0x%x)", i
);
715 debug_serial_write (remote_desc
, buffer
, 4 + 4 + len
);
716 i
= readchar (remote_desc
, remote_timeout
);
719 error ("Bad checksum from load command (0x%x)", i
);
724 static unsigned short
725 calc_checksum (unsigned char *buffer
, int count
)
727 unsigned short checksum
;
730 for (; count
> 0; count
-= 2, buffer
+= 2)
731 checksum
+= (*buffer
<< 8) | *(buffer
+ 1);
734 checksum
+= *buffer
<< 8;
740 sparclite_udp_start (bfd_vma entry
)
742 unsigned char buffer
[6];
747 buffer
[2] = entry
>> 24;
748 buffer
[3] = entry
>> 16;
749 buffer
[4] = entry
>> 8;
752 send_udp_buf (udp_fd
, buffer
, 6); /* Send start addr */
753 i
= recv_udp_buf (udp_fd
, buffer
, sizeof (buffer
), -1); /* Get response */
755 if (i
< 1 || buffer
[0] != 0x55)
756 error ("Failed to take start address.");
760 sparclite_udp_write (bfd
*from_bfd
, asection
*from_sec
, file_ptr from_addr
,
761 bfd_vma to_addr
, int len
)
763 unsigned char buffer
[2000];
764 unsigned short checksum
;
765 static int pkt_num
= 0;
766 static unsigned long old_addr
= -1;
771 if (to_addr
!= old_addr
)
773 buffer
[0] = 0x1; /* Load command */
774 buffer
[1] = 0x1; /* Loading address */
775 buffer
[2] = to_addr
>> 24;
776 buffer
[3] = to_addr
>> 16;
777 buffer
[4] = to_addr
>> 8;
781 for (i
= 0; i
< 6; i
++)
782 checksum
+= buffer
[i
];
785 send_udp_buf (udp_fd
, buffer
, 6);
786 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, -1);
789 error ("Got back short checksum for load addr.");
791 if (checksum
!= buffer
[0])
792 error ("Got back bad checksum for load addr.");
794 pkt_num
= 0; /* Load addr resets packet seq # */
798 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 6, from_addr
,
801 checksum
= calc_checksum (buffer
+ 6, len
);
803 buffer
[0] = 0x1; /* Load command */
804 buffer
[1] = 0x2; /* Loading data */
805 buffer
[2] = pkt_num
>> 8;
807 buffer
[4] = checksum
>> 8;
808 buffer
[5] = checksum
;
810 send_udp_buf (udp_fd
, buffer
, len
+ 6);
811 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, 3);
815 fprintf_unfiltered (gdb_stderr
, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len
, to_addr
);
819 if (buffer
[0] != 0xff)
820 error ("Got back bad response for load data.");
829 #endif /* HAVE_SOCKETS */
832 sparclite_download (char *filename
, int from_tty
)
836 download (remote_target_name
, filename
, from_tty
, sparclite_udp_write
,
837 sparclite_udp_start
);
839 abort (); /* sparclite_open should prevent this! */
842 download (remote_target_name
, filename
, from_tty
, sparclite_serial_write
,
843 sparclite_serial_start
);
846 /* Set up the sparclite target vector. */
849 init_sparclite_ops (void)
851 sparclite_ops
.to_shortname
= "sparclite";
852 sparclite_ops
.to_longname
= "SPARClite download target";
853 sparclite_ops
.to_doc
= "Download to a remote SPARClite target board via serial of UDP.\n\
854 Specify the device it is connected to (e.g. /dev/ttya).";
855 sparclite_ops
.to_open
= sparclite_open
;
856 sparclite_ops
.to_close
= sparclite_close
;
857 sparclite_ops
.to_load
= sparclite_download
;
858 sparclite_ops
.to_stratum
= download_stratum
;
859 sparclite_ops
.to_magic
= OPS_MAGIC
;
863 _initialize_sparcl_tdep (void)
865 init_sparclite_ops ();
866 add_target (&sparclite_ops
);