1 /* Target dependent code for the Fujitsu SPARClite for GDB, the GNU debugger.
2 Copyright 1994, 1995, 1996 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, Boston, MA 02111-1307, USA. */
22 #include "breakpoint.h"
25 #include <sys/types.h>
27 #if !defined(__GO32__) && !defined(_WIN32)
31 #include <sys/socket.h>
32 #include <netinet/in.h>
36 extern struct target_ops sparclite_ops
; /* Forward decl */
37 extern struct target_ops remote_ops
;
39 static char *remote_target_name
= NULL
;
40 static serial_t remote_desc
= NULL
;
41 static int serial_flag
;
43 static int udp_fd
= -1;
46 static serial_t open_tty
PARAMS ((char *name
));
47 static int send_resp
PARAMS ((serial_t desc
, char c
));
48 static void close_tty
PARAMS ((int ignore
));
50 static int recv_udp_buf
PARAMS ((int fd
, unsigned char *buf
, int len
, int timeout
));
51 static int send_udp_buf
PARAMS ((int fd
, unsigned char *buf
, int len
));
53 static void sparclite_open
PARAMS ((char *name
, int from_tty
));
54 static void sparclite_close
PARAMS ((int quitting
));
55 static void download
PARAMS ((char *target_name
, char *args
, int from_tty
,
56 void (*write_routine
) (bfd
*from_bfd
,
59 bfd_vma to_addr
, int len
),
60 void (*start_routine
) (bfd_vma entry
)));
61 static void sparclite_serial_start
PARAMS ((bfd_vma entry
));
62 static void sparclite_serial_write
PARAMS ((bfd
*from_bfd
, asection
*from_sec
,
64 bfd_vma to_addr
, int len
));
66 static unsigned short calc_checksum
PARAMS ((unsigned char *buffer
,
68 static void sparclite_udp_start
PARAMS ((bfd_vma entry
));
69 static void sparclite_udp_write
PARAMS ((bfd
*from_bfd
, asection
*from_sec
,
70 file_ptr from_addr
, bfd_vma to_addr
,
73 static void sparclite_download
PARAMS ((char *filename
, int from_tty
));
75 #define DDA2_SUP_ASI 0xb000000
76 #define DDA1_SUP_ASI 0xb0000
78 #define DDA2_ASI_MASK 0xff000000
79 #define DDA1_ASI_MASK 0xff0000
80 #define DIA2_SUP_MODE 0x8000
81 #define DIA1_SUP_MODE 0x4000
82 #define DDA2_ENABLE 0x100
83 #define DDA1_ENABLE 0x80
84 #define DIA2_ENABLE 0x40
85 #define DIA1_ENABLE 0x20
86 #define DSINGLE_STEP 0x10
87 #define DDV_TYPE_MASK 0xc
88 #define DDV_TYPE_LOAD 0x0
89 #define DDV_TYPE_STORE 0x4
90 #define DDV_TYPE_ACCESS 0x8
91 #define DDV_TYPE_ALWAYS 0xc
96 sparclite_insert_watchpoint (addr
, len
, type
)
103 dcr
= read_register (DCR_REGNUM
);
105 if (!(dcr
& DDA1_ENABLE
))
107 write_register (DDA1_REGNUM
, addr
);
108 dcr
&= ~(DDA1_ASI_MASK
| DDV_TYPE_MASK
);
109 dcr
|= (DDA1_SUP_ASI
| DDA1_ENABLE
);
112 write_register (DDV1_REGNUM
, 0);
113 write_register (DDV2_REGNUM
, 0xffffffff);
114 dcr
|= (DDV_TYPE_LOAD
& (~DDV_COND
& ~DDV_MASK
));
118 write_register (DDV1_REGNUM
, 0);
119 write_register (DDV2_REGNUM
, 0xffffffff);
120 dcr
|= (DDV_TYPE_STORE
& (~DDV_COND
& ~DDV_MASK
));
124 write_register (DDV1_REGNUM
, 0);
125 write_register (DDV2_REGNUM
, 0xffffffff);
126 dcr
|= (DDV_TYPE_ACCESS
);
128 write_register (DCR_REGNUM
, dcr
);
130 else if (!(dcr
& DDA2_ENABLE
))
132 write_register (DDA2_REGNUM
, addr
);
133 dcr
&= ~(DDA2_ASI_MASK
& DDV_TYPE_MASK
);
134 dcr
|= (DDA2_SUP_ASI
| DDA2_ENABLE
);
137 write_register (DDV1_REGNUM
, 0);
138 write_register (DDV2_REGNUM
, 0xffffffff);
139 dcr
|= (DDV_TYPE_LOAD
& ~DDV_COND
& ~DDV_MASK
);
143 write_register (DDV1_REGNUM
, 0);
144 write_register (DDV2_REGNUM
, 0xffffffff);
145 dcr
|= (DDV_TYPE_STORE
& ~DDV_COND
& ~DDV_MASK
);
149 write_register (DDV1_REGNUM
, 0);
150 write_register (DDV2_REGNUM
, 0xffffffff);
151 dcr
|= (DDV_TYPE_ACCESS
);
153 write_register (DCR_REGNUM
, dcr
);
162 sparclite_remove_watchpoint (addr
, len
, type
)
167 CORE_ADDR dcr
, dda1
, dda2
;
169 dcr
= read_register (DCR_REGNUM
);
170 dda1
= read_register (DDA1_REGNUM
);
171 dda2
= read_register (DDA2_REGNUM
);
173 if ((dcr
& DDA1_ENABLE
) && addr
== dda1
)
174 write_register (DCR_REGNUM
, (dcr
& ~DDA1_ENABLE
));
175 else if ((dcr
& DDA2_ENABLE
) && addr
== dda2
)
176 write_register (DCR_REGNUM
, (dcr
& ~DDA2_ENABLE
));
184 sparclite_insert_hw_breakpoint (addr
, len
)
190 dcr
= read_register (DCR_REGNUM
);
192 if (!(dcr
& DIA1_ENABLE
))
194 write_register (DIA1_REGNUM
, addr
);
195 write_register (DCR_REGNUM
, (dcr
| DIA1_ENABLE
| DIA1_SUP_MODE
));
197 else if (!(dcr
& DIA2_ENABLE
))
199 write_register (DIA2_REGNUM
, addr
);
200 write_register (DCR_REGNUM
, (dcr
| DIA2_ENABLE
| DIA2_SUP_MODE
));
209 sparclite_remove_hw_breakpoint (addr
, shadow
)
213 CORE_ADDR dcr
, dia1
, dia2
;
215 dcr
= read_register (DCR_REGNUM
);
216 dia1
= read_register (DIA1_REGNUM
);
217 dia2
= read_register (DIA2_REGNUM
);
219 if ((dcr
& DIA1_ENABLE
) && addr
== dia1
)
220 write_register (DCR_REGNUM
, (dcr
& ~DIA1_ENABLE
));
221 else if ((dcr
& DIA2_ENABLE
) && addr
== dia2
)
222 write_register (DCR_REGNUM
, (dcr
& ~DIA2_ENABLE
));
230 sparclite_check_watch_resources (type
, cnt
, ot
)
235 if (type
== bp_hardware_breakpoint
)
237 if (TARGET_HW_BREAK_LIMIT
== 0)
239 else if (cnt
<= TARGET_HW_BREAK_LIMIT
)
244 if (TARGET_HW_WATCH_LIMIT
== 0)
248 else if (cnt
<= TARGET_HW_WATCH_LIMIT
)
255 sparclite_stopped_data_address ()
257 CORE_ADDR dsr
, dda1
, dda2
;
259 dsr
= read_register (DSR_REGNUM
);
260 dda1
= read_register (DDA1_REGNUM
);
261 dda2
= read_register (DDA2_REGNUM
);
277 desc
= SERIAL_OPEN (name
);
279 perror_with_name (name
);
283 if (SERIAL_SETBAUDRATE (desc
, baud_rate
))
286 perror_with_name (name
);
292 SERIAL_FLUSH_INPUT (desc
);
297 /* Read a single character from the remote end, masking it down to 7 bits. */
300 readchar (desc
, timeout
)
306 ch
= SERIAL_READCHAR (desc
, timeout
);
311 error ("SPARClite remote connection closed");
313 perror_with_name ("SPARClite communication error");
315 error ("SPARClite remote timeout");
326 SERIAL_WRITE (desc
, &c
, 1);
327 return readchar (desc
, 2);
337 SERIAL_CLOSE (remote_desc
);
344 recv_udp_buf (fd
, buf
, len
, timeout
)
353 FD_SET (fd
, &readfds
);
357 struct timeval timebuf
;
359 timebuf
.tv_sec
= timeout
;
361 cc
= select (fd
+ 1, &readfds
, 0, 0, &timebuf
);
364 cc
= select (fd
+ 1, &readfds
, 0, 0, 0);
370 perror_with_name ("recv_udp_buf: Bad return value from select:");
372 cc
= recv (fd
, buf
, len
, 0);
375 perror_with_name ("Got an error from recv: ");
379 send_udp_buf (fd
, buf
, len
)
385 cc
= send (fd
, buf
, len
, 0);
391 perror_with_name ("Got an error from send: ");
393 error ("Short count in send: tried %d, sent %d\n", len
, cc
);
395 #endif /* __GO32__ */
398 sparclite_open (name
, 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 free (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
)) p
++;
430 if (strncmp (name
, "serial", strlen (name
)) == 0)
432 else if (strncmp (name
, "udp", strlen (name
)) == 0)
435 error ("Must specify either `serial' or `udp'.");
441 if (!strchr (name
, ':'))
442 serial_flag
= 1; /* No colon is unambiguous (local device) */
444 error ("Usage: target sparclite serial /dev/ttyb\n\
445 or: target sparclite udp host");
450 remote_desc
= open_tty (p
);
452 old_chain
= make_cleanup (close_tty
, 0);
454 c
= send_resp (remote_desc
, 0x00);
457 error ("Unknown response (0x%x) from SparcLite. Try resetting the board.",
460 c
= send_resp (remote_desc
, 0x55);
463 error ("Sparclite appears to be ill.");
469 struct sockaddr_in sockaddr
;
470 unsigned char buffer
[100];
473 /* Setup the socket. Must be raw UDP. */
475 he
= gethostbyname (p
);
478 error ("No such host %s.", p
);
480 udp_fd
= socket (PF_INET
, SOCK_DGRAM
, 0);
482 old_chain
= make_cleanup (close
, udp_fd
);
484 sockaddr
.sin_family
= PF_INET
;
485 sockaddr
.sin_port
= htons(7000);
486 memcpy (&sockaddr
.sin_addr
.s_addr
, he
->h_addr
, sizeof (struct in_addr
));
488 if (connect (udp_fd
, &sockaddr
, sizeof(sockaddr
)))
489 perror_with_name ("Connect failed");
494 send_udp_buf (udp_fd
, buffer
, 2); /* Request version */
495 cc
= recv_udp_buf (udp_fd
, buffer
, sizeof(buffer
), 5); /* Get response */
497 error ("SPARClite isn't responding.");
500 error ("SPARClite appears to be ill.");
502 error ("UDP downloading is not supported for DOS hosts.");
503 #endif /* __GO32__ */
506 printf_unfiltered ("[SPARClite appears to be alive]\n");
508 push_target (&sparclite_ops
);
510 discard_cleanups (old_chain
);
516 sparclite_close (quitting
)
528 #define LOAD_ADDRESS 0x40000000
531 download (target_name
, args
, from_tty
, write_routine
, start_routine
)
535 void (*write_routine
) PARAMS ((bfd
*from_bfd
, asection
*from_sec
,
536 file_ptr from_addr
, bfd_vma to_addr
, int len
));
537 void (*start_routine
) PARAMS ((bfd_vma entry
));
539 struct cleanup
*old_chain
;
544 #define WRITESIZE 1024
553 while (*args
!= '\000')
557 while (isspace (*args
)) args
++;
561 while ((*args
!= '\000') && !isspace (*args
)) args
++;
568 else if (strncmp (arg
, "-quiet", strlen (arg
)) == 0)
570 else if (strncmp (arg
, "-nostart", strlen (arg
)) == 0)
573 error ("unknown option `%s'", arg
);
577 filename
= get_exec_file (1);
579 pbfd
= bfd_openr (filename
, gnutarget
);
582 perror_with_name (filename
);
585 old_chain
= make_cleanup (bfd_close
, pbfd
);
587 if (!bfd_check_format (pbfd
, bfd_object
))
588 error ("\"%s\" is not an object file: %s", filename
,
589 bfd_errmsg (bfd_get_error ()));
591 for (section
= pbfd
->sections
; section
; section
= section
->next
)
593 if (bfd_get_section_flags (pbfd
, section
) & SEC_LOAD
)
595 bfd_vma section_address
;
596 bfd_size_type section_size
;
599 section_address
= bfd_get_section_vma (pbfd
, section
);
600 /* Adjust sections from a.out files, since they don't
601 carry their addresses with. */
602 if (bfd_get_flavour (pbfd
) == bfd_target_aout_flavour
)
603 section_address
+= LOAD_ADDRESS
;
605 section_size
= bfd_get_section_size_before_reloc (section
);
608 printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
609 bfd_get_section_name (pbfd
, section
),
614 while (section_size
> 0)
617 static char inds
[] = "|/-\\";
622 count
= min (section_size
, WRITESIZE
);
624 write_routine (pbfd
, section
, fptr
, section_address
, count
);
628 printf_unfiltered ("\r%c", inds
[k
++ % 4]);
629 gdb_flush (gdb_stdout
);
632 section_address
+= count
;
634 section_size
-= count
;
641 entry
= bfd_get_start_address (pbfd
);
644 printf_unfiltered ("[Starting %s at 0x%x]\n", filename
, entry
);
646 start_routine (entry
);
649 do_cleanups (old_chain
);
653 sparclite_serial_start (entry
)
660 store_unsigned_integer (buffer
+ 1, 4, entry
);
662 SERIAL_WRITE (remote_desc
, buffer
, 1 + 4);
663 i
= readchar (remote_desc
, 2);
665 error ("Can't start SparcLite. Error code %d\n", i
);
669 sparclite_serial_write (from_bfd
, from_sec
, from_addr
, to_addr
, len
)
676 char buffer
[4 + 4 + WRITESIZE
]; /* addr + len + data */
677 unsigned char checksum
;
680 store_unsigned_integer (buffer
, 4, to_addr
); /* Address */
681 store_unsigned_integer (buffer
+ 4, 4, len
); /* Length */
683 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 8, from_addr
, len
);
686 for (i
= 0; i
< len
; i
++)
687 checksum
+= buffer
[8 + i
];
689 i
= send_resp (remote_desc
, 0x01);
692 error ("Bad response from load command (0x%x)", i
);
694 SERIAL_WRITE (remote_desc
, buffer
, 4 + 4 + len
);
695 i
= readchar (remote_desc
, 2);
698 error ("Bad checksum from load command (0x%x)", i
);
703 static unsigned short
704 calc_checksum (buffer
, count
)
705 unsigned char *buffer
;
708 unsigned short checksum
;
711 for (; count
> 0; count
-= 2, buffer
+= 2)
712 checksum
+= (*buffer
<< 8) | *(buffer
+ 1);
715 checksum
+= *buffer
<< 8;
721 sparclite_udp_start (entry
)
724 unsigned char buffer
[6];
729 buffer
[2] = entry
>> 24;
730 buffer
[3] = entry
>> 16;
731 buffer
[4] = entry
>> 8;
734 send_udp_buf (udp_fd
, buffer
, 6); /* Send start addr */
735 i
= recv_udp_buf (udp_fd
, buffer
, sizeof(buffer
), -1); /* Get response */
737 if (i
< 1 || buffer
[0] != 0x55)
738 error ("Failed to take start address.");
742 sparclite_udp_write (from_bfd
, from_sec
, from_addr
, to_addr
, len
)
749 unsigned char buffer
[2000];
750 unsigned short checksum
;
751 static int pkt_num
= 0;
752 static unsigned long old_addr
= -1;
757 if (to_addr
!= old_addr
)
759 buffer
[0] = 0x1; /* Load command */
760 buffer
[1] = 0x1; /* Loading address */
761 buffer
[2] = to_addr
>> 24;
762 buffer
[3] = to_addr
>> 16;
763 buffer
[4] = to_addr
>> 8;
767 for (i
= 0; i
< 6; i
++)
768 checksum
+= buffer
[i
];
771 send_udp_buf (udp_fd
, buffer
, 6);
772 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, -1);
775 error ("Got back short checksum for load addr.");
777 if (checksum
!= buffer
[0])
778 error ("Got back bad checksum for load addr.");
780 pkt_num
= 0; /* Load addr resets packet seq # */
784 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 6, from_addr
,
787 checksum
= calc_checksum (buffer
+ 6, len
);
789 buffer
[0] = 0x1; /* Load command */
790 buffer
[1] = 0x2; /* Loading data */
791 buffer
[2] = pkt_num
>> 8;
793 buffer
[4] = checksum
>> 8;
794 buffer
[5] = checksum
;
796 send_udp_buf (udp_fd
, buffer
, len
+ 6);
797 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, 3);
801 fprintf_unfiltered (gdb_stderr
, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len
, to_addr
);
805 if (buffer
[0] != 0xff)
806 error ("Got back bad response for load data.");
815 #endif /* __GO32__ */
818 sparclite_download (filename
, from_tty
)
824 download (remote_target_name
, filename
, from_tty
, sparclite_udp_write
,
825 sparclite_udp_start
);
827 abort (); /* sparclite_open should prevent this! */
830 download (remote_target_name
, filename
, from_tty
, sparclite_serial_write
,
831 sparclite_serial_start
);
834 /* Define the target subroutine names */
836 static struct target_ops sparclite_ops
=
838 "sparclite", /* to_shortname */
839 "SPARClite remote target", /* to_longname */
840 "Use a remote SPARClite target board via a serial line, using a gdb-specific protocol.\n\
841 Specify the serial device it is connected to (e.g. /dev/ttya).", /* to_doc */
842 sparclite_open
, /* to_open */
843 sparclite_close
, /* to_close */
848 0, /* to_fetch_registers */
849 0, /* to_store_registers */
850 0, /* to_prepare_to_store */
851 0, /* to_xfer_memory */
852 0, /* to_files_info */
853 0, /* to_insert_breakpoint */
854 0, /* to_remove_breakpoint */
855 0, /* to_terminal_init */
856 0, /* to_terminal_inferior */
857 0, /* to_terminal_ours_for_output */
858 0, /* to_terminal_ours */
859 0, /* to_terminal_info */
861 sparclite_download
, /* to_load */
862 0, /* to_lookup_symbol */
863 0, /* to_create_inferior */
864 0, /* to_mourn_inferior */
866 0, /* to_notice_signals */
867 0, /* to_thread_alive */
869 download_stratum
, /* to_stratum */
871 0, /* to_has_all_memory */
872 0, /* to_has_memory */
873 0, /* to_has_stack */
874 0, /* to_has_registers */
875 0, /* to_has_execution */
877 0, /* sections_end */
878 OPS_MAGIC
/* to_magic */
882 _initialize_sparcl_tdep ()
884 add_target (&sparclite_ops
);