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c906108c 1/* Target dependent code for the Fujitsu SPARClite for GDB, the GNU debugger.
9846de1b 2 Copyright 1994, 1995, 1996 Free Software Foundation, Inc.
c906108c 3
c5aa993b 4 This file is part of GDB.
c906108c 5
c5aa993b
JM
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.
c906108c 10
c5aa993b
JM
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.
c906108c 15
c5aa993b
JM
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. */
c906108c
SS
20
21#include "defs.h"
22#include "gdbcore.h"
23#include "breakpoint.h"
24#include "target.h"
25#include "serial.h"
26#include <sys/types.h>
27
28#if (!defined(__GO32__) && !defined(_WIN32)) || defined(__CYGWIN32__)
29#define HAVE_SOCKETS
30#include <sys/time.h>
31#include <unistd.h>
32#include <sys/socket.h>
33#include <netinet/in.h>
34#include <netdb.h>
35#endif
36
c5aa993b 37extern struct target_ops sparclite_ops; /* Forward decl */
c906108c
SS
38extern struct target_ops remote_ops;
39
40static char *remote_target_name = NULL;
41static serial_t remote_desc = NULL;
42static int serial_flag;
43#ifdef HAVE_SOCKETS
44static int udp_fd = -1;
45#endif
46
47static serial_t open_tty PARAMS ((char *name));
48static int send_resp PARAMS ((serial_t desc, char c));
49static void close_tty PARAMS ((int ignore));
50#ifdef HAVE_SOCKETS
51static int recv_udp_buf PARAMS ((int fd, unsigned char *buf, int len, int timeout));
52static int send_udp_buf PARAMS ((int fd, unsigned char *buf, int len));
53#endif
54static void sparclite_open PARAMS ((char *name, int from_tty));
55static void sparclite_close PARAMS ((int quitting));
56static void download PARAMS ((char *target_name, char *args, int from_tty,
c5aa993b
JM
57 void (*write_routine) (bfd * from_bfd,
58 asection * from_sec,
c906108c 59 file_ptr from_addr,
c5aa993b 60 bfd_vma to_addr, int len),
c906108c
SS
61 void (*start_routine) (bfd_vma entry)));
62static void sparclite_serial_start PARAMS ((bfd_vma entry));
c5aa993b 63static void sparclite_serial_write PARAMS ((bfd * from_bfd, asection * from_sec,
c906108c
SS
64 file_ptr from_addr,
65 bfd_vma to_addr, int len));
66#ifdef HAVE_SOCKETS
67static unsigned short calc_checksum PARAMS ((unsigned char *buffer,
68 int count));
69static void sparclite_udp_start PARAMS ((bfd_vma entry));
c5aa993b 70static void sparclite_udp_write PARAMS ((bfd * from_bfd, asection * from_sec,
c906108c
SS
71 file_ptr from_addr, bfd_vma to_addr,
72 int len));
73#endif
74static void sparclite_download PARAMS ((char *filename, int from_tty));
75
76#define DDA2_SUP_ASI 0xb000000
77#define DDA1_SUP_ASI 0xb0000
78
79#define DDA2_ASI_MASK 0xff000000
c5aa993b 80#define DDA1_ASI_MASK 0xff0000
c906108c
SS
81#define DIA2_SUP_MODE 0x8000
82#define DIA1_SUP_MODE 0x4000
83#define DDA2_ENABLE 0x100
84#define DDA1_ENABLE 0x80
85#define DIA2_ENABLE 0x40
86#define DIA1_ENABLE 0x20
c5aa993b 87#define DSINGLE_STEP 0x10 /* not used */
c906108c
SS
88#define DDV_TYPE_MASK 0xc
89#define DDV_TYPE_LOAD 0x0
90#define DDV_TYPE_STORE 0x4
91#define DDV_TYPE_ACCESS 0x8
92#define DDV_TYPE_ALWAYS 0xc
93#define DDV_COND 0x2
94#define DDV_MASK 0x1
95
96int
97sparclite_insert_watchpoint (addr, len, type)
98 CORE_ADDR addr;
99 int len;
100 int type;
101{
102 CORE_ADDR dcr;
103
104 dcr = read_register (DCR_REGNUM);
105
106 if (!(dcr & DDA1_ENABLE))
107 {
108 write_register (DDA1_REGNUM, addr);
109 dcr &= ~(DDA1_ASI_MASK | DDV_TYPE_MASK);
110 dcr |= (DDA1_SUP_ASI | DDA1_ENABLE);
111 if (type == 1)
112 {
113 write_register (DDV1_REGNUM, 0);
114 write_register (DDV2_REGNUM, 0xffffffff);
115 dcr |= (DDV_TYPE_LOAD & (~DDV_COND & ~DDV_MASK));
c5aa993b 116 }
c906108c
SS
117 else if (type == 0)
118 {
119 write_register (DDV1_REGNUM, 0);
120 write_register (DDV2_REGNUM, 0xffffffff);
121 dcr |= (DDV_TYPE_STORE & (~DDV_COND & ~DDV_MASK));
122 }
123 else
124 {
125 write_register (DDV1_REGNUM, 0);
126 write_register (DDV2_REGNUM, 0xffffffff);
127 dcr |= (DDV_TYPE_ACCESS);
128 }
129 write_register (DCR_REGNUM, dcr);
130 }
131 else if (!(dcr & DDA2_ENABLE))
132 {
133 write_register (DDA2_REGNUM, addr);
134 dcr &= ~(DDA2_ASI_MASK & DDV_TYPE_MASK);
135 dcr |= (DDA2_SUP_ASI | DDA2_ENABLE);
136 if (type == 1)
137 {
138 write_register (DDV1_REGNUM, 0);
139 write_register (DDV2_REGNUM, 0xffffffff);
140 dcr |= (DDV_TYPE_LOAD & ~DDV_COND & ~DDV_MASK);
141 }
142 else if (type == 0)
143 {
144 write_register (DDV1_REGNUM, 0);
145 write_register (DDV2_REGNUM, 0xffffffff);
146 dcr |= (DDV_TYPE_STORE & ~DDV_COND & ~DDV_MASK);
147 }
148 else
149 {
150 write_register (DDV1_REGNUM, 0);
151 write_register (DDV2_REGNUM, 0xffffffff);
152 dcr |= (DDV_TYPE_ACCESS);
153 }
154 write_register (DCR_REGNUM, dcr);
155 }
156 else
157 return -1;
158
159 return 0;
c5aa993b 160}
c906108c
SS
161
162int
163sparclite_remove_watchpoint (addr, len, type)
164 CORE_ADDR addr;
165 int len;
166 int type;
167{
168 CORE_ADDR dcr, dda1, dda2;
169
170 dcr = read_register (DCR_REGNUM);
171 dda1 = read_register (DDA1_REGNUM);
172 dda2 = read_register (DDA2_REGNUM);
173
174 if ((dcr & DDA1_ENABLE) && addr == dda1)
175 write_register (DCR_REGNUM, (dcr & ~DDA1_ENABLE));
176 else if ((dcr & DDA2_ENABLE) && addr == dda2)
177 write_register (DCR_REGNUM, (dcr & ~DDA2_ENABLE));
178 else
179 return -1;
180
181 return 0;
182}
183
184int
185sparclite_insert_hw_breakpoint (addr, len)
186 CORE_ADDR addr;
187 int len;
188{
189 CORE_ADDR dcr;
190
191 dcr = read_register (DCR_REGNUM);
c5aa993b 192
c906108c
SS
193 if (!(dcr & DIA1_ENABLE))
194 {
195 write_register (DIA1_REGNUM, addr);
196 write_register (DCR_REGNUM, (dcr | DIA1_ENABLE | DIA1_SUP_MODE));
197 }
198 else if (!(dcr & DIA2_ENABLE))
199 {
200 write_register (DIA2_REGNUM, addr);
201 write_register (DCR_REGNUM, (dcr | DIA2_ENABLE | DIA2_SUP_MODE));
202 }
203 else
204 return -1;
205
206 return 0;
207}
208
209int
210sparclite_remove_hw_breakpoint (addr, shadow)
211 CORE_ADDR addr;
212 int shadow;
213{
214 CORE_ADDR dcr, dia1, dia2;
215
216 dcr = read_register (DCR_REGNUM);
217 dia1 = read_register (DIA1_REGNUM);
218 dia2 = read_register (DIA2_REGNUM);
c5aa993b 219
c906108c
SS
220 if ((dcr & DIA1_ENABLE) && addr == dia1)
221 write_register (DCR_REGNUM, (dcr & ~DIA1_ENABLE));
222 else if ((dcr & DIA2_ENABLE) && addr == dia2)
223 write_register (DCR_REGNUM, (dcr & ~DIA2_ENABLE));
224 else
225 return -1;
226
227 return 0;
228}
229
230int
231sparclite_check_watch_resources (type, cnt, ot)
232 int type;
233 int cnt;
234 int ot;
235{
236 /* Watchpoints not supported on simulator. */
237 if (strcmp (target_shortname, "sim") == 0)
238 return 0;
239
240 if (type == bp_hardware_breakpoint)
241 {
242 if (TARGET_HW_BREAK_LIMIT == 0)
243 return 0;
244 else if (cnt <= TARGET_HW_BREAK_LIMIT)
245 return 1;
246 }
247 else
248 {
249 if (TARGET_HW_WATCH_LIMIT == 0)
250 return 0;
251 else if (ot)
252 return -1;
253 else if (cnt <= TARGET_HW_WATCH_LIMIT)
254 return 1;
255 }
256 return -1;
257}
258
259CORE_ADDR
260sparclite_stopped_data_address ()
261{
262 CORE_ADDR dsr, dda1, dda2;
263
264 dsr = read_register (DSR_REGNUM);
265 dda1 = read_register (DDA1_REGNUM);
266 dda2 = read_register (DDA2_REGNUM);
267
268 if (dsr & 0x10)
269 return dda1;
270 else if (dsr & 0x20)
271 return dda2;
272 else
273 return 0;
274}
275\f
276static serial_t
277open_tty (name)
278 char *name;
279{
280 serial_t desc;
281
282 desc = SERIAL_OPEN (name);
283 if (!desc)
284 perror_with_name (name);
285
286 if (baud_rate != -1)
287 {
288 if (SERIAL_SETBAUDRATE (desc, baud_rate))
289 {
290 SERIAL_CLOSE (desc);
291 perror_with_name (name);
292 }
293 }
294
295 SERIAL_RAW (desc);
296
297 SERIAL_FLUSH_INPUT (desc);
298
299 return desc;
300}
301
302/* Read a single character from the remote end, masking it down to 7 bits. */
303
304static int
305readchar (desc, timeout)
306 serial_t desc;
307 int timeout;
308{
309 int ch;
310 char s[10];
311
312 ch = SERIAL_READCHAR (desc, timeout);
313
314 switch (ch)
315 {
316 case SERIAL_EOF:
317 error ("SPARClite remote connection closed");
318 case SERIAL_ERROR:
319 perror_with_name ("SPARClite communication error");
320 case SERIAL_TIMEOUT:
321 error ("SPARClite remote timeout");
322 default:
323 if (remote_debug > 0)
324 {
325 sprintf (s, "[%02x]", ch & 0xff);
326 puts_debug ("read -->", s, "<--");
327 }
328 return ch;
329 }
330}
331
332static void
333debug_serial_write (desc, buf, len)
334 serial_t desc;
335 char *buf;
336 int len;
337{
338 char s[10];
339
340 SERIAL_WRITE (desc, buf, len);
341 if (remote_debug > 0)
342 {
343 while (len-- > 0)
344 {
345 sprintf (s, "[%02x]", *buf & 0xff);
346 puts_debug ("Sent -->", s, "<--");
347 buf++;
348 }
349 }
350}
351
352
353static int
354send_resp (desc, c)
355 serial_t desc;
356 char c;
357{
358 debug_serial_write (desc, &c, 1);
359 return readchar (desc, remote_timeout);
360}
361
362static void
363close_tty (ignore)
364 int ignore;
365{
366 if (!remote_desc)
367 return;
368
369 SERIAL_CLOSE (remote_desc);
370
371 remote_desc = NULL;
372}
373
374#ifdef HAVE_SOCKETS
375static int
376recv_udp_buf (fd, buf, len, timeout)
377 int fd, len;
378 unsigned char *buf;
379 int timeout;
380{
381 int cc;
382 fd_set readfds;
383
384 FD_ZERO (&readfds);
385 FD_SET (fd, &readfds);
386
387 if (timeout >= 0)
388 {
389 struct timeval timebuf;
390
391 timebuf.tv_sec = timeout;
392 timebuf.tv_usec = 0;
393 cc = select (fd + 1, &readfds, 0, 0, &timebuf);
394 }
395 else
396 cc = select (fd + 1, &readfds, 0, 0, 0);
397
398 if (cc == 0)
399 return 0;
400
401 if (cc != 1)
402 perror_with_name ("recv_udp_buf: Bad return value from select:");
403
404 cc = recv (fd, buf, len, 0);
405
406 if (cc < 0)
407 perror_with_name ("Got an error from recv: ");
408}
409
410static int
411send_udp_buf (fd, buf, len)
412 int fd, len;
413 unsigned char *buf;
414{
415 int cc;
416
417 cc = send (fd, buf, len, 0);
418
419 if (cc == len)
420 return;
421
422 if (cc < 0)
423 perror_with_name ("Got an error from send: ");
424
425 error ("Short count in send: tried %d, sent %d\n", len, cc);
426}
427#endif /* HAVE_SOCKETS */
428
429static void
430sparclite_open (name, from_tty)
431 char *name;
432 int from_tty;
433{
434 struct cleanup *old_chain;
435 int c;
436 char *p;
437
438 if (!name)
439 error ("You need to specify what device or hostname is associated with the SparcLite board.");
440
441 target_preopen (from_tty);
442
443 unpush_target (&sparclite_ops);
444
445 if (remote_target_name)
446 free (remote_target_name);
447
448 remote_target_name = strsave (name);
449
450 /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can
451 mean either a serial port on a terminal server, or the IP address of a
452 SPARClite demo board. If there's no colon, then it pretty much has to be
453 a local device (except for DOS... grrmble) */
454
455 p = strchr (name, ' ');
456
457 if (p)
458 {
459 *p++ = '\000';
c5aa993b
JM
460 while ((*p != '\000') && isspace (*p))
461 p++;
c906108c
SS
462
463 if (strncmp (name, "serial", strlen (name)) == 0)
464 serial_flag = 1;
465 else if (strncmp (name, "udp", strlen (name)) == 0)
466 serial_flag = 0;
467 else
468 error ("Must specify either `serial' or `udp'.");
469 }
470 else
471 {
472 p = name;
473
474 if (!strchr (name, ':'))
475 serial_flag = 1; /* No colon is unambiguous (local device) */
476 else
477 error ("Usage: target sparclite serial /dev/ttyb\n\
478or: target sparclite udp host");
479 }
480
481 if (serial_flag)
482 {
483 remote_desc = open_tty (p);
484
485 old_chain = make_cleanup ((make_cleanup_func) close_tty, 0);
486
487 c = send_resp (remote_desc, 0x00);
488
489 if (c != 0xaa)
490 error ("Unknown response (0x%x) from SparcLite. Try resetting the board.",
491 c);
492
493 c = send_resp (remote_desc, 0x55);
494
495 if (c != 0x55)
496 error ("Sparclite appears to be ill.");
497 }
498 else
499 {
500#ifdef HAVE_SOCKETS
501 struct hostent *he;
502 struct sockaddr_in sockaddr;
503 unsigned char buffer[100];
504 int cc;
505
506 /* Setup the socket. Must be raw UDP. */
507
508 he = gethostbyname (p);
509
510 if (!he)
511 error ("No such host %s.", p);
512
513 udp_fd = socket (PF_INET, SOCK_DGRAM, 0);
514
515 old_chain = make_cleanup (close, udp_fd);
516
517 sockaddr.sin_family = PF_INET;
c5aa993b 518 sockaddr.sin_port = htons (7000);
c906108c
SS
519 memcpy (&sockaddr.sin_addr.s_addr, he->h_addr, sizeof (struct in_addr));
520
c5aa993b 521 if (connect (udp_fd, &sockaddr, sizeof (sockaddr)))
c906108c
SS
522 perror_with_name ("Connect failed");
523
524 buffer[0] = 0x5;
525 buffer[1] = 0;
526
c5aa993b
JM
527 send_udp_buf (udp_fd, buffer, 2); /* Request version */
528 cc = recv_udp_buf (udp_fd, buffer, sizeof (buffer), 5); /* Get response */
c906108c
SS
529 if (cc == 0)
530 error ("SPARClite isn't responding.");
531
532 if (cc < 3)
533 error ("SPARClite appears to be ill.");
534#else
535 error ("UDP downloading is not supported for DOS hosts.");
536#endif /* HAVE_SOCKETS */
537 }
538
539 printf_unfiltered ("[SPARClite appears to be alive]\n");
540
541 push_target (&sparclite_ops);
542
543 discard_cleanups (old_chain);
544
545 return;
546}
547
548static void
549sparclite_close (quitting)
550 int quitting;
551{
552 if (serial_flag)
553 close_tty (0);
554#ifdef HAVE_SOCKETS
c5aa993b
JM
555 else if (udp_fd != -1)
556 close (udp_fd);
c906108c
SS
557#endif
558}
559
560#define LOAD_ADDRESS 0x40000000
561
562static void
563download (target_name, args, from_tty, write_routine, start_routine)
564 char *target_name;
565 char *args;
566 int from_tty;
c5aa993b
JM
567 void (*write_routine) PARAMS ((bfd * from_bfd, asection * from_sec,
568 file_ptr from_addr, bfd_vma to_addr, int len));
c906108c
SS
569 void (*start_routine) PARAMS ((bfd_vma entry));
570{
571 struct cleanup *old_chain;
572 asection *section;
573 bfd *pbfd;
574 bfd_vma entry;
575 int i;
576#define WRITESIZE 1024
577 char *filename;
578 int quiet;
579 int nostart;
580
581 quiet = 0;
582 nostart = 0;
583 filename = NULL;
584
585 while (*args != '\000')
586 {
587 char *arg;
588
c5aa993b
JM
589 while (isspace (*args))
590 args++;
c906108c
SS
591
592 arg = args;
593
c5aa993b
JM
594 while ((*args != '\000') && !isspace (*args))
595 args++;
c906108c
SS
596
597 if (*args != '\000')
598 *args++ = '\000';
599
600 if (*arg != '-')
601 filename = arg;
602 else if (strncmp (arg, "-quiet", strlen (arg)) == 0)
603 quiet = 1;
604 else if (strncmp (arg, "-nostart", strlen (arg)) == 0)
605 nostart = 1;
606 else
607 error ("unknown option `%s'", arg);
608 }
609
610 if (!filename)
611 filename = get_exec_file (1);
612
613 pbfd = bfd_openr (filename, gnutarget);
614 if (pbfd == NULL)
615 {
616 perror_with_name (filename);
617 return;
618 }
619 old_chain = make_cleanup ((make_cleanup_func) bfd_close, pbfd);
620
c5aa993b 621 if (!bfd_check_format (pbfd, bfd_object))
c906108c
SS
622 error ("\"%s\" is not an object file: %s", filename,
623 bfd_errmsg (bfd_get_error ()));
624
c5aa993b 625 for (section = pbfd->sections; section; section = section->next)
c906108c
SS
626 {
627 if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)
628 {
c5aa993b 629 bfd_vma section_address;
c906108c 630 bfd_size_type section_size;
c5aa993b
JM
631 file_ptr fptr;
632 const char *section_name;
c906108c 633
c5aa993b 634 section_name = bfd_get_section_name (pbfd, section);
c906108c
SS
635
636 section_address = bfd_get_section_vma (pbfd, section);
637
638 /* Adjust sections from a.out files, since they don't
639 carry their addresses with. */
640 if (bfd_get_flavour (pbfd) == bfd_target_aout_flavour)
641 {
642 if (strcmp (section_name, ".text") == 0)
643 section_address = bfd_get_start_address (pbfd);
644 else if (strcmp (section_name, ".data") == 0)
645 {
646 /* Read the first 8 bytes of the data section.
647 There should be the string 'DaTa' followed by
648 a word containing the actual section address. */
649 struct data_marker
c5aa993b
JM
650 {
651 char signature[4]; /* 'DaTa' */
652 unsigned char sdata[4]; /* &sdata */
653 }
654 marker;
c906108c
SS
655 bfd_get_section_contents (pbfd, section, &marker, 0,
656 sizeof (marker));
657 if (strncmp (marker.signature, "DaTa", 4) == 0)
658 {
659 if (TARGET_BYTE_ORDER == BIG_ENDIAN)
660 section_address = bfd_getb32 (marker.sdata);
661 else
662 section_address = bfd_getl32 (marker.sdata);
663 }
664 }
665 }
666
667 section_size = bfd_get_section_size_before_reloc (section);
668
669 if (!quiet)
670 printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
671 bfd_get_section_name (pbfd, section),
672 section_address,
673 section_size);
674
675 fptr = 0;
676 while (section_size > 0)
677 {
678 int count;
679 static char inds[] = "|/-\\";
680 static int k = 0;
681
682 QUIT;
683
684 count = min (section_size, WRITESIZE);
685
686 write_routine (pbfd, section, fptr, section_address, count);
687
688 if (!quiet)
689 {
690 printf_unfiltered ("\r%c", inds[k++ % 4]);
691 gdb_flush (gdb_stdout);
692 }
693
694 section_address += count;
695 fptr += count;
696 section_size -= count;
697 }
698 }
699 }
700
701 if (!nostart)
702 {
703 entry = bfd_get_start_address (pbfd);
704
705 if (!quiet)
706 printf_unfiltered ("[Starting %s at 0x%x]\n", filename, entry);
707
708 start_routine (entry);
709 }
710
711 do_cleanups (old_chain);
712}
713
714static void
715sparclite_serial_start (entry)
716 bfd_vma entry;
717{
718 char buffer[5];
719 int i;
720
721 buffer[0] = 0x03;
722 store_unsigned_integer (buffer + 1, 4, entry);
723
724 debug_serial_write (remote_desc, buffer, 1 + 4);
725 i = readchar (remote_desc, remote_timeout);
726 if (i != 0x55)
727 error ("Can't start SparcLite. Error code %d\n", i);
728}
729
730static void
731sparclite_serial_write (from_bfd, from_sec, from_addr, to_addr, len)
732 bfd *from_bfd;
733 asection *from_sec;
734 file_ptr from_addr;
735 bfd_vma to_addr;
736 int len;
737{
c5aa993b 738 char buffer[4 + 4 + WRITESIZE]; /* addr + len + data */
c906108c
SS
739 unsigned char checksum;
740 int i;
741
c5aa993b
JM
742 store_unsigned_integer (buffer, 4, to_addr); /* Address */
743 store_unsigned_integer (buffer + 4, 4, len); /* Length */
c906108c
SS
744
745 bfd_get_section_contents (from_bfd, from_sec, buffer + 8, from_addr, len);
746
747 checksum = 0;
748 for (i = 0; i < len; i++)
749 checksum += buffer[8 + i];
750
751 i = send_resp (remote_desc, 0x01);
752
753 if (i != 0x5a)
754 error ("Bad response from load command (0x%x)", i);
755
756 debug_serial_write (remote_desc, buffer, 4 + 4 + len);
757 i = readchar (remote_desc, remote_timeout);
758
759 if (i != checksum)
760 error ("Bad checksum from load command (0x%x)", i);
761}
762
763#ifdef HAVE_SOCKETS
764
765static unsigned short
766calc_checksum (buffer, count)
767 unsigned char *buffer;
768 int count;
769{
770 unsigned short checksum;
771
772 checksum = 0;
773 for (; count > 0; count -= 2, buffer += 2)
774 checksum += (*buffer << 8) | *(buffer + 1);
775
776 if (count != 0)
777 checksum += *buffer << 8;
778
779 return checksum;
780}
781
782static void
783sparclite_udp_start (entry)
784 bfd_vma entry;
785{
786 unsigned char buffer[6];
787 int i;
788
789 buffer[0] = 0x3;
790 buffer[1] = 0;
791 buffer[2] = entry >> 24;
792 buffer[3] = entry >> 16;
793 buffer[4] = entry >> 8;
794 buffer[5] = entry;
795
c5aa993b
JM
796 send_udp_buf (udp_fd, buffer, 6); /* Send start addr */
797 i = recv_udp_buf (udp_fd, buffer, sizeof (buffer), -1); /* Get response */
c906108c
SS
798
799 if (i < 1 || buffer[0] != 0x55)
800 error ("Failed to take start address.");
801}
802
803static void
804sparclite_udp_write (from_bfd, from_sec, from_addr, to_addr, len)
805 bfd *from_bfd;
806 asection *from_sec;
807 file_ptr from_addr;
808 bfd_vma to_addr;
809 int len;
810{
811 unsigned char buffer[2000];
812 unsigned short checksum;
813 static int pkt_num = 0;
814 static unsigned long old_addr = -1;
815 int i;
816
817 while (1)
818 {
819 if (to_addr != old_addr)
820 {
821 buffer[0] = 0x1; /* Load command */
822 buffer[1] = 0x1; /* Loading address */
823 buffer[2] = to_addr >> 24;
824 buffer[3] = to_addr >> 16;
825 buffer[4] = to_addr >> 8;
826 buffer[5] = to_addr;
827
828 checksum = 0;
829 for (i = 0; i < 6; i++)
830 checksum += buffer[i];
831 checksum &= 0xff;
832
833 send_udp_buf (udp_fd, buffer, 6);
834 i = recv_udp_buf (udp_fd, buffer, sizeof buffer, -1);
835
836 if (i < 1)
837 error ("Got back short checksum for load addr.");
838
839 if (checksum != buffer[0])
840 error ("Got back bad checksum for load addr.");
841
842 pkt_num = 0; /* Load addr resets packet seq # */
843 old_addr = to_addr;
844 }
845
846 bfd_get_section_contents (from_bfd, from_sec, buffer + 6, from_addr,
847 len);
848
849 checksum = calc_checksum (buffer + 6, len);
850
851 buffer[0] = 0x1; /* Load command */
852 buffer[1] = 0x2; /* Loading data */
853 buffer[2] = pkt_num >> 8;
854 buffer[3] = pkt_num;
855 buffer[4] = checksum >> 8;
856 buffer[5] = checksum;
857
858 send_udp_buf (udp_fd, buffer, len + 6);
859 i = recv_udp_buf (udp_fd, buffer, sizeof buffer, 3);
860
861 if (i == 0)
862 {
863 fprintf_unfiltered (gdb_stderr, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len, to_addr);
864 continue;
865 }
866
867 if (buffer[0] != 0xff)
868 error ("Got back bad response for load data.");
869
870 old_addr += len;
871 pkt_num++;
872
873 return;
874 }
875}
876
877#endif /* HAVE_SOCKETS */
878
879static void
880sparclite_download (filename, from_tty)
881 char *filename;
882 int from_tty;
883{
884 if (!serial_flag)
885#ifdef HAVE_SOCKETS
886 download (remote_target_name, filename, from_tty, sparclite_udp_write,
887 sparclite_udp_start);
888#else
889 abort (); /* sparclite_open should prevent this! */
890#endif
891 else
892 download (remote_target_name, filename, from_tty, sparclite_serial_write,
893 sparclite_serial_start);
894}
895\f
896/* Define the target subroutine names */
897
c5aa993b 898static struct target_ops sparclite_ops;
c906108c 899
c5aa993b
JM
900static void
901init_sparclite_ops (void)
c906108c 902{
c5aa993b
JM
903 sparclite_ops.to_shortname = "sparclite";
904 sparclite_ops.to_longname = "SPARClite remote target";
905 sparclite_ops.to_doc = "Use a remote SPARClite target board via a serial line; using a gdb-specific protocol.\n\
906Specify the serial device it is connected to (e.g. /dev/ttya).";
907 sparclite_ops.to_open = sparclite_open;
908 sparclite_ops.to_close = sparclite_close;
909 sparclite_ops.to_attach = 0;
c906108c
SS
910 sparclite_ops.to_post_attach = NULL;
911 sparclite_ops.to_require_attach = NULL;
c5aa993b
JM
912 sparclite_ops.to_detach = 0;
913 sparclite_ops.to_require_detach = NULL;
914 sparclite_ops.to_resume = 0;
915 sparclite_ops.to_wait = 0;
916 sparclite_ops.to_post_wait = NULL;
917 sparclite_ops.to_fetch_registers = 0;
918 sparclite_ops.to_store_registers = 0;
919 sparclite_ops.to_prepare_to_store = 0;
920 sparclite_ops.to_xfer_memory = 0;
921 sparclite_ops.to_files_info = 0;
922 sparclite_ops.to_insert_breakpoint = 0;
923 sparclite_ops.to_remove_breakpoint = 0;
924 sparclite_ops.to_terminal_init = 0;
925 sparclite_ops.to_terminal_inferior = 0;
926 sparclite_ops.to_terminal_ours_for_output = 0;
927 sparclite_ops.to_terminal_ours = 0;
928 sparclite_ops.to_terminal_info = 0;
929 sparclite_ops.to_kill = 0;
930 sparclite_ops.to_load = sparclite_download;
931 sparclite_ops.to_lookup_symbol = 0;
932 sparclite_ops.to_create_inferior = 0;
c906108c
SS
933 sparclite_ops.to_post_startup_inferior = NULL;
934 sparclite_ops.to_acknowledge_created_inferior = NULL;
935 sparclite_ops.to_clone_and_follow_inferior = NULL;
936 sparclite_ops.to_post_follow_inferior_by_clone = NULL;
937 sparclite_ops.to_insert_fork_catchpoint = NULL;
938 sparclite_ops.to_remove_fork_catchpoint = NULL;
939 sparclite_ops.to_insert_vfork_catchpoint = NULL;
940 sparclite_ops.to_remove_vfork_catchpoint = NULL;
941 sparclite_ops.to_has_forked = NULL;
942 sparclite_ops.to_has_vforked = NULL;
943 sparclite_ops.to_can_follow_vfork_prior_to_exec = NULL;
c5aa993b 944 sparclite_ops.to_post_follow_vfork = NULL;
c906108c
SS
945 sparclite_ops.to_insert_exec_catchpoint = NULL;
946 sparclite_ops.to_remove_exec_catchpoint = NULL;
947 sparclite_ops.to_has_execd = NULL;
948 sparclite_ops.to_reported_exec_events_per_exec_call = NULL;
949 sparclite_ops.to_has_exited = NULL;
c5aa993b
JM
950 sparclite_ops.to_mourn_inferior = 0;
951 sparclite_ops.to_can_run = 0;
952 sparclite_ops.to_notice_signals = 0;
953 sparclite_ops.to_thread_alive = 0;
954 sparclite_ops.to_stop = 0;
955 sparclite_ops.to_pid_to_exec_file = NULL;
956 sparclite_ops.to_core_file_to_sym_file = NULL;
957 sparclite_ops.to_stratum = download_stratum;
958 sparclite_ops.DONT_USE = 0;
959 sparclite_ops.to_has_all_memory = 0;
960 sparclite_ops.to_has_memory = 0;
961 sparclite_ops.to_has_stack = 0;
962 sparclite_ops.to_has_registers = 0;
963 sparclite_ops.to_has_execution = 0;
964 sparclite_ops.to_sections = 0;
965 sparclite_ops.to_sections_end = 0;
966 sparclite_ops.to_magic = OPS_MAGIC;
967} /* init_sparclite_ops */
c906108c
SS
968
969void
970_initialize_sparcl_tdep ()
971{
c5aa993b 972 init_sparclite_ops ();
c906108c
SS
973 add_target (&sparclite_ops);
974}