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>
28 #if defined(__GO32__) || defined(WIN32)
37 #include <sys/socket.h>
38 #include <netinet/in.h>
42 extern struct target_ops sparclite_ops
; /* Forward decl */
43 extern struct target_ops remote_ops
;
45 static char *remote_target_name
= NULL
;
46 static serial_t remote_desc
= NULL
;
47 static int serial_flag
;
49 static int udp_fd
= -1;
52 static serial_t open_tty
PARAMS ((char *name
));
53 static int send_resp
PARAMS ((serial_t desc
, char c
));
54 static void close_tty
PARAMS ((int ignore
));
56 static int recv_udp_buf
PARAMS ((int fd
, unsigned char *buf
, int len
, int timeout
));
57 static int send_udp_buf
PARAMS ((int fd
, unsigned char *buf
, int len
));
59 static void sparclite_open
PARAMS ((char *name
, int from_tty
));
60 static void sparclite_close
PARAMS ((int quitting
));
61 static void download
PARAMS ((char *target_name
, char *args
, int from_tty
,
62 void (*write_routine
) (bfd
*from_bfd
,
65 bfd_vma to_addr
, int len
),
66 void (*start_routine
) (bfd_vma entry
)));
67 static void sparclite_serial_start
PARAMS ((bfd_vma entry
));
68 static void sparclite_serial_write
PARAMS ((bfd
*from_bfd
, asection
*from_sec
,
70 bfd_vma to_addr
, int len
));
72 static unsigned short calc_checksum
PARAMS ((unsigned char *buffer
,
74 static void sparclite_udp_start
PARAMS ((bfd_vma entry
));
75 static void sparclite_udp_write
PARAMS ((bfd
*from_bfd
, asection
*from_sec
,
76 file_ptr from_addr
, bfd_vma to_addr
,
79 static void sparclite_download
PARAMS ((char *filename
, int from_tty
));
81 #define DDA2_SUP_ASI 0xb000000
82 #define DDA1_SUP_ASI 0xb0000
84 #define DDA2_ASI_MASK 0xff000000
85 #define DDA1_ASI_MASK 0xff0000
86 #define DIA2_SUP_MODE 0x8000
87 #define DIA1_SUP_MODE 0x4000
88 #define DDA2_ENABLE 0x100
89 #define DDA1_ENABLE 0x80
90 #define DIA2_ENABLE 0x40
91 #define DIA1_ENABLE 0x20
92 #define DSINGLE_STEP 0x10
93 #define DDV_TYPE_MASK 0xc
94 #define DDV_TYPE_LOAD 0x0
95 #define DDV_TYPE_STORE 0x4
96 #define DDV_TYPE_ACCESS 0x8
97 #define DDV_TYPE_ALWAYS 0xc
102 sparclite_insert_watchpoint (addr
, len
, type
)
109 dcr
= read_register (DCR_REGNUM
);
111 if (!(dcr
& DDA1_ENABLE
))
113 write_register (DDA1_REGNUM
, addr
);
114 dcr
&= ~(DDA1_ASI_MASK
| DDV_TYPE_MASK
);
115 dcr
|= (DDA1_SUP_ASI
| DDA1_ENABLE
);
118 write_register (DDV1_REGNUM
, 0);
119 write_register (DDV2_REGNUM
, 0xffffffff);
120 dcr
|= (DDV_TYPE_LOAD
& (~DDV_COND
& ~DDV_MASK
));
124 write_register (DDV1_REGNUM
, 0);
125 write_register (DDV2_REGNUM
, 0xffffffff);
126 dcr
|= (DDV_TYPE_STORE
& (~DDV_COND
& ~DDV_MASK
));
130 write_register (DDV1_REGNUM
, 0);
131 write_register (DDV2_REGNUM
, 0xffffffff);
132 dcr
|= (DDV_TYPE_ACCESS
);
134 write_register (DCR_REGNUM
, dcr
);
136 else if (!(dcr
& DDA2_ENABLE
))
138 write_register (DDA2_REGNUM
, addr
);
139 dcr
&= ~(DDA2_ASI_MASK
& DDV_TYPE_MASK
);
140 dcr
|= (DDA2_SUP_ASI
| DDA2_ENABLE
);
143 write_register (DDV1_REGNUM
, 0);
144 write_register (DDV2_REGNUM
, 0xffffffff);
145 dcr
|= (DDV_TYPE_LOAD
& ~DDV_COND
& ~DDV_MASK
);
149 write_register (DDV1_REGNUM
, 0);
150 write_register (DDV2_REGNUM
, 0xffffffff);
151 dcr
|= (DDV_TYPE_STORE
& ~DDV_COND
& ~DDV_MASK
);
155 write_register (DDV1_REGNUM
, 0);
156 write_register (DDV2_REGNUM
, 0xffffffff);
157 dcr
|= (DDV_TYPE_ACCESS
);
159 write_register (DCR_REGNUM
, dcr
);
168 sparclite_remove_watchpoint (addr
, len
, type
)
173 CORE_ADDR dcr
, dda1
, dda2
;
175 dcr
= read_register (DCR_REGNUM
);
176 dda1
= read_register (DDA1_REGNUM
);
177 dda2
= read_register (DDA2_REGNUM
);
179 if ((dcr
& DDA1_ENABLE
) && addr
== dda1
)
180 write_register (DCR_REGNUM
, (dcr
& ~DDA1_ENABLE
));
181 else if ((dcr
& DDA2_ENABLE
) && addr
== dda2
)
182 write_register (DCR_REGNUM
, (dcr
& ~DDA2_ENABLE
));
190 sparclite_insert_hw_breakpoint (addr
, len
)
196 dcr
= read_register (DCR_REGNUM
);
198 if (!(dcr
& DIA1_ENABLE
))
200 write_register (DIA1_REGNUM
, addr
);
201 write_register (DCR_REGNUM
, (dcr
| DIA1_ENABLE
| DIA1_SUP_MODE
));
203 else if (!(dcr
& DIA2_ENABLE
))
205 write_register (DIA2_REGNUM
, addr
);
206 write_register (DCR_REGNUM
, (dcr
| DIA2_ENABLE
| DIA2_SUP_MODE
));
215 sparclite_remove_hw_breakpoint (addr
, shadow
)
219 CORE_ADDR dcr
, dia1
, dia2
;
221 dcr
= read_register (DCR_REGNUM
);
222 dia1
= read_register (DIA1_REGNUM
);
223 dia2
= read_register (DIA2_REGNUM
);
225 if ((dcr
& DIA1_ENABLE
) && addr
== dia1
)
226 write_register (DCR_REGNUM
, (dcr
& ~DIA1_ENABLE
));
227 else if ((dcr
& DIA2_ENABLE
) && addr
== dia2
)
228 write_register (DCR_REGNUM
, (dcr
& ~DIA2_ENABLE
));
236 sparclite_check_watch_resources (type
, cnt
, ot
)
241 if (type
== bp_hardware_breakpoint
)
243 if (TARGET_HW_BREAK_LIMIT
== 0)
245 else if (cnt
<= TARGET_HW_BREAK_LIMIT
)
250 if (TARGET_HW_WATCH_LIMIT
== 0)
254 else if (cnt
<= TARGET_HW_WATCH_LIMIT
)
261 sparclite_stopped_data_address ()
263 CORE_ADDR dsr
, dda1
, dda2
;
265 dsr
= read_register (DSR_REGNUM
);
266 dda1
= read_register (DDA1_REGNUM
);
267 dda2
= read_register (DDA2_REGNUM
);
283 desc
= SERIAL_OPEN (name
);
285 perror_with_name (name
);
289 if (SERIAL_SETBAUDRATE (desc
, baud_rate
))
292 perror_with_name (name
);
298 SERIAL_FLUSH_INPUT (desc
);
303 /* Read a single character from the remote end, masking it down to 7 bits. */
306 readchar (desc
, timeout
)
312 ch
= SERIAL_READCHAR (desc
, timeout
);
317 error ("SPARClite remote connection closed");
319 perror_with_name ("SPARClite communication error");
321 error ("SPARClite remote timeout");
332 SERIAL_WRITE (desc
, &c
, 1);
333 return readchar (desc
, 2);
343 SERIAL_CLOSE (remote_desc
);
350 recv_udp_buf (fd
, buf
, len
, timeout
)
359 FD_SET (fd
, &readfds
);
363 struct timeval timebuf
;
365 timebuf
.tv_sec
= timeout
;
367 cc
= select (fd
+ 1, &readfds
, 0, 0, &timebuf
);
370 cc
= select (fd
+ 1, &readfds
, 0, 0, 0);
376 perror_with_name ("recv_udp_buf: Bad return value from select:");
378 cc
= recv (fd
, buf
, len
, 0);
381 perror_with_name ("Got an error from recv: ");
385 send_udp_buf (fd
, buf
, len
)
391 cc
= send (fd
, buf
, len
, 0);
397 perror_with_name ("Got an error from send: ");
399 error ("Short count in send: tried %d, sent %d\n", len
, cc
);
401 #endif /* __GO32__ */
404 sparclite_open (name
, from_tty
)
408 struct cleanup
*old_chain
;
413 error ("You need to specify what device or hostname is associated with the SparcLite board.");
415 target_preopen (from_tty
);
417 unpush_target (&sparclite_ops
);
419 if (remote_target_name
)
420 free (remote_target_name
);
422 remote_target_name
= strsave (name
);
424 /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can
425 mean either a serial port on a terminal server, or the IP address of a
426 SPARClite demo board. If there's no colon, then it pretty much has to be
427 a local device (except for DOS... grrmble) */
429 p
= strchr (name
, ' ');
434 while ((*p
!= '\000') && isspace (*p
)) p
++;
436 if (strncmp (name
, "serial", strlen (name
)) == 0)
438 else if (strncmp (name
, "udp", strlen (name
)) == 0)
441 error ("Must specify either `serial' or `udp'.");
447 if (!strchr (name
, ':'))
448 serial_flag
= 1; /* No colon is unambiguous (local device) */
450 error ("Usage: target sparclite serial /dev/ttyb\n\
451 or: target sparclite udp host");
456 remote_desc
= open_tty (p
);
458 old_chain
= make_cleanup (close_tty
, 0);
460 c
= send_resp (remote_desc
, 0x00);
463 error ("Unknown response (0x%x) from SparcLite. Try resetting the board.",
466 c
= send_resp (remote_desc
, 0x55);
469 error ("Sparclite appears to be ill.");
475 struct sockaddr_in sockaddr
;
476 unsigned char buffer
[100];
479 /* Setup the socket. Must be raw UDP. */
481 he
= gethostbyname (p
);
484 error ("No such host %s.", p
);
486 udp_fd
= socket (PF_INET
, SOCK_DGRAM
, 0);
488 old_chain
= make_cleanup (close
, udp_fd
);
490 sockaddr
.sin_family
= PF_INET
;
491 sockaddr
.sin_port
= htons(7000);
492 memcpy (&sockaddr
.sin_addr
.s_addr
, he
->h_addr
, sizeof (struct in_addr
));
494 if (connect (udp_fd
, &sockaddr
, sizeof(sockaddr
)))
495 perror_with_name ("Connect failed");
500 send_udp_buf (udp_fd
, buffer
, 2); /* Request version */
501 cc
= recv_udp_buf (udp_fd
, buffer
, sizeof(buffer
), 5); /* Get response */
503 error ("SPARClite isn't responding.");
506 error ("SPARClite appears to be ill.");
508 error ("UDP downloading is not supported for DOS hosts.");
509 #endif /* __GO32__ */
512 printf_unfiltered ("[SPARClite appears to be alive]\n");
514 push_target (&sparclite_ops
);
516 discard_cleanups (old_chain
);
522 sparclite_close (quitting
)
534 #define LOAD_ADDRESS 0x40000000
537 download (target_name
, args
, from_tty
, write_routine
, start_routine
)
541 void (*write_routine
)();
542 void (*start_routine
)();
544 struct cleanup
*old_chain
;
549 #define WRITESIZE 1024
558 while (*args
!= '\000')
562 while (isspace (*args
)) args
++;
566 while ((*args
!= '\000') && !isspace (*args
)) args
++;
573 else if (strncmp (arg
, "-quiet", strlen (arg
)) == 0)
575 else if (strncmp (arg
, "-nostart", strlen (arg
)) == 0)
578 error ("unknown option `%s'", arg
);
582 filename
= get_exec_file (1);
584 pbfd
= bfd_openr (filename
, gnutarget
);
587 perror_with_name (filename
);
590 old_chain
= make_cleanup (bfd_close
, pbfd
);
592 if (!bfd_check_format (pbfd
, bfd_object
))
593 error ("\"%s\" is not an object file: %s", filename
,
594 bfd_errmsg (bfd_get_error ()));
596 for (section
= pbfd
->sections
; section
; section
= section
->next
)
598 if (bfd_get_section_flags (pbfd
, section
) & SEC_LOAD
)
600 bfd_vma section_address
;
601 bfd_size_type section_size
;
604 section_address
= bfd_get_section_vma (pbfd
, section
);
605 /* Adjust sections from a.out files, since they don't
606 carry their addresses with. */
607 if (bfd_get_flavour (pbfd
) == bfd_target_aout_flavour
)
608 section_address
+= LOAD_ADDRESS
;
610 section_size
= bfd_get_section_size_before_reloc (section
);
613 printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
614 bfd_get_section_name (pbfd
, section
),
619 while (section_size
> 0)
622 static char inds
[] = "|/-\\";
627 count
= min (section_size
, WRITESIZE
);
629 write_routine (pbfd
, section
, fptr
, section_address
, count
);
633 printf_unfiltered ("\r%c", inds
[k
++ % 4]);
634 gdb_flush (gdb_stdout
);
637 section_address
+= count
;
639 section_size
-= count
;
646 entry
= bfd_get_start_address (pbfd
);
649 printf_unfiltered ("[Starting %s at 0x%x]\n", filename
, entry
);
651 start_routine (entry
);
654 do_cleanups (old_chain
);
658 sparclite_serial_start (entry
)
665 store_unsigned_integer (buffer
+ 1, 4, entry
);
667 SERIAL_WRITE (remote_desc
, buffer
, 1 + 4);
668 i
= readchar (remote_desc
, 2);
670 error ("Can't start SparcLite. Error code %d\n", i
);
674 sparclite_serial_write (from_bfd
, from_sec
, from_addr
, to_addr
, len
)
681 char buffer
[4 + 4 + WRITESIZE
]; /* addr + len + data */
682 unsigned char checksum
;
685 store_unsigned_integer (buffer
, 4, to_addr
); /* Address */
686 store_unsigned_integer (buffer
+ 4, 4, len
); /* Length */
688 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 8, from_addr
, len
);
691 for (i
= 0; i
< len
; i
++)
692 checksum
+= buffer
[8 + i
];
694 i
= send_resp (remote_desc
, 0x01);
697 error ("Bad response from load command (0x%x)", i
);
699 SERIAL_WRITE (remote_desc
, buffer
, 4 + 4 + len
);
700 i
= readchar (remote_desc
, 2);
703 error ("Bad checksum from load command (0x%x)", i
);
708 static unsigned short
709 calc_checksum (buffer
, count
)
710 unsigned char *buffer
;
713 unsigned short checksum
;
716 for (; count
> 0; count
-= 2, buffer
+= 2)
717 checksum
+= (*buffer
<< 8) | *(buffer
+ 1);
720 checksum
+= *buffer
<< 8;
726 sparclite_udp_start (entry
)
729 unsigned char buffer
[6];
734 buffer
[2] = entry
>> 24;
735 buffer
[3] = entry
>> 16;
736 buffer
[4] = entry
>> 8;
739 send_udp_buf (udp_fd
, buffer
, 6); /* Send start addr */
740 i
= recv_udp_buf (udp_fd
, buffer
, sizeof(buffer
), -1); /* Get response */
742 if (i
< 1 || buffer
[0] != 0x55)
743 error ("Failed to take start address.");
747 sparclite_udp_write (from_bfd
, from_sec
, from_addr
, to_addr
, len
)
754 unsigned char buffer
[2000];
755 unsigned short checksum
;
756 static int pkt_num
= 0;
757 static unsigned long old_addr
= -1;
762 if (to_addr
!= old_addr
)
764 buffer
[0] = 0x1; /* Load command */
765 buffer
[1] = 0x1; /* Loading address */
766 buffer
[2] = to_addr
>> 24;
767 buffer
[3] = to_addr
>> 16;
768 buffer
[4] = to_addr
>> 8;
772 for (i
= 0; i
< 6; i
++)
773 checksum
+= buffer
[i
];
776 send_udp_buf (udp_fd
, buffer
, 6);
777 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, -1);
780 error ("Got back short checksum for load addr.");
782 if (checksum
!= buffer
[0])
783 error ("Got back bad checksum for load addr.");
785 pkt_num
= 0; /* Load addr resets packet seq # */
789 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 6, from_addr
,
792 checksum
= calc_checksum (buffer
+ 6, len
);
794 buffer
[0] = 0x1; /* Load command */
795 buffer
[1] = 0x2; /* Loading data */
796 buffer
[2] = pkt_num
>> 8;
798 buffer
[4] = checksum
>> 8;
799 buffer
[5] = checksum
;
801 send_udp_buf (udp_fd
, buffer
, len
+ 6);
802 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, 3);
806 fprintf_unfiltered (gdb_stderr
, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len
, to_addr
);
810 if (buffer
[0] != 0xff)
811 error ("Got back bad response for load data.");
820 #endif /* __GO32__ */
823 sparclite_download (filename
, from_tty
)
829 download (remote_target_name
, filename
, from_tty
, sparclite_udp_write
,
830 sparclite_udp_start
);
832 abort (); /* sparclite_open should prevent this! */
835 download (remote_target_name
, filename
, from_tty
, sparclite_serial_write
,
836 sparclite_serial_start
);
839 /* Define the target subroutine names */
841 static struct target_ops sparclite_ops
=
843 "sparclite", /* to_shortname */
844 "SPARClite remote target", /* to_longname */
845 "Use a remote SPARClite target board via a serial line, using a gdb-specific protocol.\n\
846 Specify the serial device it is connected to (e.g. /dev/ttya).", /* to_doc */
847 sparclite_open
, /* to_open */
848 sparclite_close
, /* to_close */
853 0, /* to_fetch_registers */
854 0, /* to_store_registers */
855 0, /* to_prepare_to_store */
856 0, /* to_xfer_memory */
857 0, /* to_files_info */
858 0, /* to_insert_breakpoint */
859 0, /* to_remove_breakpoint */
860 0, /* to_terminal_init */
861 0, /* to_terminal_inferior */
862 0, /* to_terminal_ours_for_output */
863 0, /* to_terminal_ours */
864 0, /* to_terminal_info */
866 sparclite_download
, /* to_load */
867 0, /* to_lookup_symbol */
868 0, /* to_create_inferior */
869 0, /* to_mourn_inferior */
871 0, /* to_notice_signals */
872 0, /* to_thread_alive */
874 download_stratum
, /* to_stratum */
876 0, /* to_has_all_memory */
877 0, /* to_has_memory */
878 0, /* to_has_stack */
879 0, /* to_has_registers */
880 0, /* to_has_execution */
882 0, /* sections_end */
883 OPS_MAGIC
/* to_magic */
887 _initialize_sparcl_tdep ()
889 add_target (&sparclite_ops
);