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
PARAMS ((char *name
));
46 static int send_resp
PARAMS ((serial_t desc
, char c
));
47 static void close_tty
PARAMS ((int ignore
));
49 static int recv_udp_buf
PARAMS ((int fd
, unsigned char *buf
, int len
, int timeout
));
50 static int send_udp_buf
PARAMS ((int fd
, unsigned char *buf
, int len
));
52 static void sparclite_open
PARAMS ((char *name
, int from_tty
));
53 static void sparclite_close
PARAMS ((int quitting
));
54 static void download
PARAMS ((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
PARAMS ((bfd_vma entry
));
61 static void sparclite_serial_write
PARAMS ((bfd
* from_bfd
, asection
* from_sec
,
63 bfd_vma to_addr
, int len
));
65 static unsigned short calc_checksum
PARAMS ((unsigned char *buffer
,
67 static void sparclite_udp_start
PARAMS ((bfd_vma entry
));
68 static void sparclite_udp_write
PARAMS ((bfd
* from_bfd
, asection
* from_sec
,
69 file_ptr from_addr
, bfd_vma to_addr
,
72 static void sparclite_download
PARAMS ((char *filename
, int from_tty
));
74 #define DDA2_SUP_ASI 0xb000000
75 #define DDA1_SUP_ASI 0xb0000
77 #define DDA2_ASI_MASK 0xff000000
78 #define DDA1_ASI_MASK 0xff0000
79 #define DIA2_SUP_MODE 0x8000
80 #define DIA1_SUP_MODE 0x4000
81 #define DDA2_ENABLE 0x100
82 #define DDA1_ENABLE 0x80
83 #define DIA2_ENABLE 0x40
84 #define DIA1_ENABLE 0x20
85 #define DSINGLE_STEP 0x10 /* not used */
86 #define DDV_TYPE_MASK 0xc
87 #define DDV_TYPE_LOAD 0x0
88 #define DDV_TYPE_STORE 0x4
89 #define DDV_TYPE_ACCESS 0x8
90 #define DDV_TYPE_ALWAYS 0xc
95 sparclite_insert_watchpoint (addr
, len
, type
)
102 dcr
= read_register (DCR_REGNUM
);
104 if (!(dcr
& DDA1_ENABLE
))
106 write_register (DDA1_REGNUM
, addr
);
107 dcr
&= ~(DDA1_ASI_MASK
| DDV_TYPE_MASK
);
108 dcr
|= (DDA1_SUP_ASI
| DDA1_ENABLE
);
111 write_register (DDV1_REGNUM
, 0);
112 write_register (DDV2_REGNUM
, 0xffffffff);
113 dcr
|= (DDV_TYPE_LOAD
& (~DDV_COND
& ~DDV_MASK
));
117 write_register (DDV1_REGNUM
, 0);
118 write_register (DDV2_REGNUM
, 0xffffffff);
119 dcr
|= (DDV_TYPE_STORE
& (~DDV_COND
& ~DDV_MASK
));
123 write_register (DDV1_REGNUM
, 0);
124 write_register (DDV2_REGNUM
, 0xffffffff);
125 dcr
|= (DDV_TYPE_ACCESS
);
127 write_register (DCR_REGNUM
, dcr
);
129 else if (!(dcr
& DDA2_ENABLE
))
131 write_register (DDA2_REGNUM
, addr
);
132 dcr
&= ~(DDA2_ASI_MASK
& DDV_TYPE_MASK
);
133 dcr
|= (DDA2_SUP_ASI
| DDA2_ENABLE
);
136 write_register (DDV1_REGNUM
, 0);
137 write_register (DDV2_REGNUM
, 0xffffffff);
138 dcr
|= (DDV_TYPE_LOAD
& ~DDV_COND
& ~DDV_MASK
);
142 write_register (DDV1_REGNUM
, 0);
143 write_register (DDV2_REGNUM
, 0xffffffff);
144 dcr
|= (DDV_TYPE_STORE
& ~DDV_COND
& ~DDV_MASK
);
148 write_register (DDV1_REGNUM
, 0);
149 write_register (DDV2_REGNUM
, 0xffffffff);
150 dcr
|= (DDV_TYPE_ACCESS
);
152 write_register (DCR_REGNUM
, dcr
);
161 sparclite_remove_watchpoint (addr
, len
, type
)
166 CORE_ADDR dcr
, dda1
, dda2
;
168 dcr
= read_register (DCR_REGNUM
);
169 dda1
= read_register (DDA1_REGNUM
);
170 dda2
= read_register (DDA2_REGNUM
);
172 if ((dcr
& DDA1_ENABLE
) && addr
== dda1
)
173 write_register (DCR_REGNUM
, (dcr
& ~DDA1_ENABLE
));
174 else if ((dcr
& DDA2_ENABLE
) && addr
== dda2
)
175 write_register (DCR_REGNUM
, (dcr
& ~DDA2_ENABLE
));
183 sparclite_insert_hw_breakpoint (addr
, len
)
189 dcr
= read_register (DCR_REGNUM
);
191 if (!(dcr
& DIA1_ENABLE
))
193 write_register (DIA1_REGNUM
, addr
);
194 write_register (DCR_REGNUM
, (dcr
| DIA1_ENABLE
| DIA1_SUP_MODE
));
196 else if (!(dcr
& DIA2_ENABLE
))
198 write_register (DIA2_REGNUM
, addr
);
199 write_register (DCR_REGNUM
, (dcr
| DIA2_ENABLE
| DIA2_SUP_MODE
));
208 sparclite_remove_hw_breakpoint (addr
, shadow
)
212 CORE_ADDR dcr
, dia1
, dia2
;
214 dcr
= read_register (DCR_REGNUM
);
215 dia1
= read_register (DIA1_REGNUM
);
216 dia2
= read_register (DIA2_REGNUM
);
218 if ((dcr
& DIA1_ENABLE
) && addr
== dia1
)
219 write_register (DCR_REGNUM
, (dcr
& ~DIA1_ENABLE
));
220 else if ((dcr
& DIA2_ENABLE
) && addr
== dia2
)
221 write_register (DCR_REGNUM
, (dcr
& ~DIA2_ENABLE
));
229 sparclite_check_watch_resources (type
, cnt
, ot
)
234 /* Watchpoints not supported on simulator. */
235 if (strcmp (target_shortname
, "sim") == 0)
238 if (type
== bp_hardware_breakpoint
)
240 if (TARGET_HW_BREAK_LIMIT
== 0)
242 else if (cnt
<= TARGET_HW_BREAK_LIMIT
)
247 if (TARGET_HW_WATCH_LIMIT
== 0)
251 else if (cnt
<= TARGET_HW_WATCH_LIMIT
)
258 sparclite_stopped_data_address ()
260 CORE_ADDR dsr
, dda1
, dda2
;
262 dsr
= read_register (DSR_REGNUM
);
263 dda1
= read_register (DDA1_REGNUM
);
264 dda2
= read_register (DDA2_REGNUM
);
280 desc
= SERIAL_OPEN (name
);
282 perror_with_name (name
);
286 if (SERIAL_SETBAUDRATE (desc
, baud_rate
))
289 perror_with_name (name
);
295 SERIAL_FLUSH_INPUT (desc
);
300 /* Read a single character from the remote end, masking it down to 7 bits. */
303 readchar (desc
, timeout
)
310 ch
= SERIAL_READCHAR (desc
, timeout
);
315 error ("SPARClite remote connection closed");
317 perror_with_name ("SPARClite communication error");
319 error ("SPARClite remote timeout");
321 if (remote_debug
> 0)
323 sprintf (s
, "[%02x]", ch
& 0xff);
324 puts_debug ("read -->", s
, "<--");
331 debug_serial_write (desc
, buf
, len
)
338 SERIAL_WRITE (desc
, buf
, len
);
339 if (remote_debug
> 0)
343 sprintf (s
, "[%02x]", *buf
& 0xff);
344 puts_debug ("Sent -->", s
, "<--");
356 debug_serial_write (desc
, &c
, 1);
357 return readchar (desc
, remote_timeout
);
367 SERIAL_CLOSE (remote_desc
);
374 recv_udp_buf (fd
, buf
, len
, timeout
)
383 FD_SET (fd
, &readfds
);
387 struct timeval timebuf
;
389 timebuf
.tv_sec
= timeout
;
391 cc
= select (fd
+ 1, &readfds
, 0, 0, &timebuf
);
394 cc
= select (fd
+ 1, &readfds
, 0, 0, 0);
400 perror_with_name ("recv_udp_buf: Bad return value from select:");
402 cc
= recv (fd
, buf
, len
, 0);
405 perror_with_name ("Got an error from recv: ");
409 send_udp_buf (fd
, buf
, len
)
415 cc
= send (fd
, buf
, len
, 0);
421 perror_with_name ("Got an error from send: ");
423 error ("Short count in send: tried %d, sent %d\n", len
, cc
);
425 #endif /* HAVE_SOCKETS */
428 sparclite_open (name
, from_tty
)
432 struct cleanup
*old_chain
;
437 error ("You need to specify what device or hostname is associated with the SparcLite board.");
439 target_preopen (from_tty
);
441 unpush_target (&sparclite_ops
);
443 if (remote_target_name
)
444 free (remote_target_name
);
446 remote_target_name
= strsave (name
);
448 /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can
449 mean either a serial port on a terminal server, or the IP address of a
450 SPARClite demo board. If there's no colon, then it pretty much has to be
451 a local device (except for DOS... grrmble) */
453 p
= strchr (name
, ' ');
458 while ((*p
!= '\000') && isspace (*p
))
461 if (strncmp (name
, "serial", strlen (name
)) == 0)
463 else if (strncmp (name
, "udp", strlen (name
)) == 0)
466 error ("Must specify either `serial' or `udp'.");
472 if (!strchr (name
, ':'))
473 serial_flag
= 1; /* No colon is unambiguous (local device) */
475 error ("Usage: target sparclite serial /dev/ttyb\n\
476 or: target sparclite udp host");
481 remote_desc
= open_tty (p
);
483 old_chain
= make_cleanup ((make_cleanup_func
) close_tty
, 0);
485 c
= send_resp (remote_desc
, 0x00);
488 error ("Unknown response (0x%x) from SparcLite. Try resetting the board.",
491 c
= send_resp (remote_desc
, 0x55);
494 error ("Sparclite appears to be ill.");
500 struct sockaddr_in sockaddr
;
501 unsigned char buffer
[100];
504 /* Setup the socket. Must be raw UDP. */
506 he
= gethostbyname (p
);
509 error ("No such host %s.", p
);
511 udp_fd
= socket (PF_INET
, SOCK_DGRAM
, 0);
513 old_chain
= make_cleanup (close
, udp_fd
);
515 sockaddr
.sin_family
= PF_INET
;
516 sockaddr
.sin_port
= htons (7000);
517 memcpy (&sockaddr
.sin_addr
.s_addr
, he
->h_addr
, sizeof (struct in_addr
));
519 if (connect (udp_fd
, &sockaddr
, sizeof (sockaddr
)))
520 perror_with_name ("Connect failed");
525 send_udp_buf (udp_fd
, buffer
, 2); /* Request version */
526 cc
= recv_udp_buf (udp_fd
, buffer
, sizeof (buffer
), 5); /* Get response */
528 error ("SPARClite isn't responding.");
531 error ("SPARClite appears to be ill.");
533 error ("UDP downloading is not supported for DOS hosts.");
534 #endif /* HAVE_SOCKETS */
537 printf_unfiltered ("[SPARClite appears to be alive]\n");
539 push_target (&sparclite_ops
);
541 discard_cleanups (old_chain
);
547 sparclite_close (quitting
)
553 else if (udp_fd
!= -1)
558 #define LOAD_ADDRESS 0x40000000
561 download (target_name
, args
, from_tty
, write_routine
, start_routine
)
565 void (*write_routine
) PARAMS ((bfd
* from_bfd
, asection
* from_sec
,
566 file_ptr from_addr
, bfd_vma to_addr
, int len
));
567 void (*start_routine
) PARAMS ((bfd_vma entry
));
569 struct cleanup
*old_chain
;
574 #define WRITESIZE 1024
583 while (*args
!= '\000')
587 while (isspace (*args
))
592 while ((*args
!= '\000') && !isspace (*args
))
600 else if (strncmp (arg
, "-quiet", strlen (arg
)) == 0)
602 else if (strncmp (arg
, "-nostart", strlen (arg
)) == 0)
605 error ("unknown option `%s'", arg
);
609 filename
= get_exec_file (1);
611 pbfd
= bfd_openr (filename
, gnutarget
);
614 perror_with_name (filename
);
617 old_chain
= make_cleanup ((make_cleanup_func
) bfd_close
, pbfd
);
619 if (!bfd_check_format (pbfd
, bfd_object
))
620 error ("\"%s\" is not an object file: %s", filename
,
621 bfd_errmsg (bfd_get_error ()));
623 for (section
= pbfd
->sections
; section
; section
= section
->next
)
625 if (bfd_get_section_flags (pbfd
, section
) & SEC_LOAD
)
627 bfd_vma section_address
;
628 bfd_size_type section_size
;
630 const char *section_name
;
632 section_name
= bfd_get_section_name (pbfd
, section
);
634 section_address
= bfd_get_section_vma (pbfd
, section
);
636 /* Adjust sections from a.out files, since they don't
637 carry their addresses with. */
638 if (bfd_get_flavour (pbfd
) == bfd_target_aout_flavour
)
640 if (strcmp (section_name
, ".text") == 0)
641 section_address
= bfd_get_start_address (pbfd
);
642 else if (strcmp (section_name
, ".data") == 0)
644 /* Read the first 8 bytes of the data section.
645 There should be the string 'DaTa' followed by
646 a word containing the actual section address. */
649 char signature
[4]; /* 'DaTa' */
650 unsigned char sdata
[4]; /* &sdata */
653 bfd_get_section_contents (pbfd
, section
, &marker
, 0,
655 if (strncmp (marker
.signature
, "DaTa", 4) == 0)
657 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
658 section_address
= bfd_getb32 (marker
.sdata
);
660 section_address
= bfd_getl32 (marker
.sdata
);
665 section_size
= bfd_get_section_size_before_reloc (section
);
668 printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
669 bfd_get_section_name (pbfd
, section
),
674 while (section_size
> 0)
677 static char inds
[] = "|/-\\";
682 count
= min (section_size
, WRITESIZE
);
684 write_routine (pbfd
, section
, fptr
, section_address
, count
);
688 printf_unfiltered ("\r%c", inds
[k
++ % 4]);
689 gdb_flush (gdb_stdout
);
692 section_address
+= count
;
694 section_size
-= count
;
701 entry
= bfd_get_start_address (pbfd
);
704 printf_unfiltered ("[Starting %s at 0x%x]\n", filename
, entry
);
706 start_routine (entry
);
709 do_cleanups (old_chain
);
713 sparclite_serial_start (entry
)
720 store_unsigned_integer (buffer
+ 1, 4, entry
);
722 debug_serial_write (remote_desc
, buffer
, 1 + 4);
723 i
= readchar (remote_desc
, remote_timeout
);
725 error ("Can't start SparcLite. Error code %d\n", i
);
729 sparclite_serial_write (from_bfd
, from_sec
, from_addr
, to_addr
, len
)
736 char buffer
[4 + 4 + WRITESIZE
]; /* addr + len + data */
737 unsigned char checksum
;
740 store_unsigned_integer (buffer
, 4, to_addr
); /* Address */
741 store_unsigned_integer (buffer
+ 4, 4, len
); /* Length */
743 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 8, from_addr
, len
);
746 for (i
= 0; i
< len
; i
++)
747 checksum
+= buffer
[8 + i
];
749 i
= send_resp (remote_desc
, 0x01);
752 error ("Bad response from load command (0x%x)", i
);
754 debug_serial_write (remote_desc
, buffer
, 4 + 4 + len
);
755 i
= readchar (remote_desc
, remote_timeout
);
758 error ("Bad checksum from load command (0x%x)", i
);
763 static unsigned short
764 calc_checksum (buffer
, count
)
765 unsigned char *buffer
;
768 unsigned short checksum
;
771 for (; count
> 0; count
-= 2, buffer
+= 2)
772 checksum
+= (*buffer
<< 8) | *(buffer
+ 1);
775 checksum
+= *buffer
<< 8;
781 sparclite_udp_start (entry
)
784 unsigned char buffer
[6];
789 buffer
[2] = entry
>> 24;
790 buffer
[3] = entry
>> 16;
791 buffer
[4] = entry
>> 8;
794 send_udp_buf (udp_fd
, buffer
, 6); /* Send start addr */
795 i
= recv_udp_buf (udp_fd
, buffer
, sizeof (buffer
), -1); /* Get response */
797 if (i
< 1 || buffer
[0] != 0x55)
798 error ("Failed to take start address.");
802 sparclite_udp_write (from_bfd
, from_sec
, from_addr
, to_addr
, len
)
809 unsigned char buffer
[2000];
810 unsigned short checksum
;
811 static int pkt_num
= 0;
812 static unsigned long old_addr
= -1;
817 if (to_addr
!= old_addr
)
819 buffer
[0] = 0x1; /* Load command */
820 buffer
[1] = 0x1; /* Loading address */
821 buffer
[2] = to_addr
>> 24;
822 buffer
[3] = to_addr
>> 16;
823 buffer
[4] = to_addr
>> 8;
827 for (i
= 0; i
< 6; i
++)
828 checksum
+= buffer
[i
];
831 send_udp_buf (udp_fd
, buffer
, 6);
832 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, -1);
835 error ("Got back short checksum for load addr.");
837 if (checksum
!= buffer
[0])
838 error ("Got back bad checksum for load addr.");
840 pkt_num
= 0; /* Load addr resets packet seq # */
844 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 6, from_addr
,
847 checksum
= calc_checksum (buffer
+ 6, len
);
849 buffer
[0] = 0x1; /* Load command */
850 buffer
[1] = 0x2; /* Loading data */
851 buffer
[2] = pkt_num
>> 8;
853 buffer
[4] = checksum
>> 8;
854 buffer
[5] = checksum
;
856 send_udp_buf (udp_fd
, buffer
, len
+ 6);
857 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, 3);
861 fprintf_unfiltered (gdb_stderr
, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len
, to_addr
);
865 if (buffer
[0] != 0xff)
866 error ("Got back bad response for load data.");
875 #endif /* HAVE_SOCKETS */
878 sparclite_download (filename
, from_tty
)
884 download (remote_target_name
, filename
, from_tty
, sparclite_udp_write
,
885 sparclite_udp_start
);
887 abort (); /* sparclite_open should prevent this! */
890 download (remote_target_name
, filename
, from_tty
, sparclite_serial_write
,
891 sparclite_serial_start
);
894 /* Set up the sparclite target vector. */
897 init_sparclite_ops (void)
899 sparclite_ops
.to_shortname
= "sparclite";
900 sparclite_ops
.to_longname
= "SPARClite download target";
901 sparclite_ops
.to_doc
= "Download to a remote SPARClite target board via serial of UDP.\n\
902 Specify the device it is connected to (e.g. /dev/ttya).";
903 sparclite_ops
.to_open
= sparclite_open
;
904 sparclite_ops
.to_close
= sparclite_close
;
905 sparclite_ops
.to_load
= sparclite_download
;
906 sparclite_ops
.to_stratum
= download_stratum
;
907 sparclite_ops
.to_magic
= OPS_MAGIC
;
911 _initialize_sparcl_tdep ()
913 init_sparclite_ops ();
914 add_target (&sparclite_ops
);