1 /* Target dependent code for the Fujitsu SPARClite for GDB, the GNU debugger.
2 Copyright 1994, 1995 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
22 #include "breakpoint.h"
25 #include <sys/types.h>
29 #include <sys/socket.h>
30 #include <netinet/in.h>
34 extern struct target_ops sparclite_ops
; /* Forward decl */
35 extern struct target_ops remote_ops
;
37 static char *remote_target_name
= NULL
;
38 static serial_t remote_desc
= NULL
;
39 static int serial_flag
;
41 static int udp_fd
= -1;
44 static serial_t open_tty
PARAMS ((char *name
));
45 static int send_resp
PARAMS ((serial_t desc
, char c
));
46 static void close_tty
PARAMS ((int ignore
));
48 static int recv_udp_buf
PARAMS ((int fd
, unsigned char *buf
, int len
, int timeout
));
49 static int send_udp_buf
PARAMS ((int fd
, unsigned char *buf
, int len
));
51 static void sparclite_open
PARAMS ((char *name
, int from_tty
));
52 static void sparclite_close
PARAMS ((int quitting
));
53 static void download
PARAMS ((char *target_name
, char *args
, int from_tty
,
54 void (*write_routine
) (bfd
*from_bfd
,
57 bfd_vma to_addr
, int len
),
58 void (*start_routine
) (bfd_vma entry
)));
59 static void sparclite_serial_start
PARAMS ((bfd_vma entry
));
60 static void sparclite_serial_write
PARAMS ((bfd
*from_bfd
, asection
*from_sec
,
62 bfd_vma to_addr
, int len
));
64 static unsigned short calc_checksum
PARAMS ((unsigned char *buffer
,
66 static void sparclite_udp_start
PARAMS ((bfd_vma entry
));
67 static void sparclite_udp_write
PARAMS ((bfd
*from_bfd
, asection
*from_sec
,
68 file_ptr from_addr
, bfd_vma to_addr
,
71 static void sparclite_download
PARAMS ((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
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 (addr
, len
, type
)
101 dcr
= read_register (DCR_REGNUM
);
103 if (!(dcr
& DDA1_ENABLE
))
105 write_register (DDA1_REGNUM
, addr
);
106 dcr
&= ~(DDA1_ASI_MASK
| DDV_TYPE_MASK
);
107 dcr
|= (DDA1_SUP_ASI
| DDA1_ENABLE
);
110 write_register (DDV1_REGNUM
, 0);
111 write_register (DDV2_REGNUM
, 0xffffffff);
112 dcr
|= (DDV_TYPE_LOAD
& (~DDV_COND
& ~DDV_MASK
));
116 write_register (DDV1_REGNUM
, 0);
117 write_register (DDV2_REGNUM
, 0xffffffff);
118 dcr
|= (DDV_TYPE_STORE
& (~DDV_COND
& ~DDV_MASK
));
122 write_register (DDV1_REGNUM
, 0);
123 write_register (DDV2_REGNUM
, 0xffffffff);
124 dcr
|= (DDV_TYPE_ACCESS
);
126 write_register (DCR_REGNUM
, dcr
);
128 else if (!(dcr
& DDA2_ENABLE
))
130 write_register (DDA2_REGNUM
, addr
);
131 dcr
&= ~(DDA2_ASI_MASK
& DDV_TYPE_MASK
);
132 dcr
|= (DDA2_SUP_ASI
| DDA2_ENABLE
);
135 write_register (DDV1_REGNUM
, 0);
136 write_register (DDV2_REGNUM
, 0xffffffff);
137 dcr
|= (DDV_TYPE_LOAD
& ~DDV_COND
& ~DDV_MASK
);
141 write_register (DDV1_REGNUM
, 0);
142 write_register (DDV2_REGNUM
, 0xffffffff);
143 dcr
|= (DDV_TYPE_STORE
& ~DDV_COND
& ~DDV_MASK
);
147 write_register (DDV1_REGNUM
, 0);
148 write_register (DDV2_REGNUM
, 0xffffffff);
149 dcr
|= (DDV_TYPE_ACCESS
);
151 write_register (DCR_REGNUM
, dcr
);
160 sparclite_remove_watchpoint (addr
, len
, type
)
165 CORE_ADDR dcr
, dda1
, dda2
;
167 dcr
= read_register (DCR_REGNUM
);
168 dda1
= read_register (DDA1_REGNUM
);
169 dda2
= read_register (DDA2_REGNUM
);
171 if ((dcr
& DDA1_ENABLE
) && addr
== dda1
)
172 write_register (DCR_REGNUM
, (dcr
& ~DDA1_ENABLE
));
173 else if ((dcr
& DDA2_ENABLE
) && addr
== dda2
)
174 write_register (DCR_REGNUM
, (dcr
& ~DDA2_ENABLE
));
182 sparclite_insert_hw_breakpoint (addr
, len
)
188 dcr
= read_register (DCR_REGNUM
);
190 if (!(dcr
& DIA1_ENABLE
))
192 write_register (DIA1_REGNUM
, addr
);
193 write_register (DCR_REGNUM
, (dcr
| DIA1_ENABLE
| DIA1_SUP_MODE
));
195 else if (!(dcr
& DIA2_ENABLE
))
197 write_register (DIA2_REGNUM
, addr
);
198 write_register (DCR_REGNUM
, (dcr
| DIA2_ENABLE
| DIA2_SUP_MODE
));
207 sparclite_remove_hw_breakpoint (addr
, shadow
)
211 CORE_ADDR dcr
, dia1
, dia2
;
213 dcr
= read_register (DCR_REGNUM
);
214 dia1
= read_register (DIA1_REGNUM
);
215 dia2
= read_register (DIA2_REGNUM
);
217 if ((dcr
& DIA1_ENABLE
) && addr
== dia1
)
218 write_register (DCR_REGNUM
, (dcr
& ~DIA1_ENABLE
));
219 else if ((dcr
& DIA2_ENABLE
) && addr
== dia2
)
220 write_register (DCR_REGNUM
, (dcr
& ~DIA2_ENABLE
));
228 sparclite_check_watch_resources (type
, cnt
, ot
)
233 if (type
== bp_hardware_breakpoint
)
234 if (TARGET_HW_BREAK_LIMIT
== 0)
236 else if (cnt
<= TARGET_HW_BREAK_LIMIT
)
239 if (TARGET_HW_WATCH_LIMIT
== 0)
243 else if (cnt
<= TARGET_HW_WATCH_LIMIT
)
249 sparclite_stopped_data_address ()
251 CORE_ADDR dsr
, dda1
, dda2
;
253 dsr
= read_register (DSR_REGNUM
);
254 dda1
= read_register (DDA1_REGNUM
);
255 dda2
= read_register (DDA2_REGNUM
);
271 desc
= SERIAL_OPEN (name
);
273 perror_with_name (name
);
277 if (SERIAL_SETBAUDRATE (desc
, baud_rate
))
280 perror_with_name (name
);
286 SERIAL_FLUSH_INPUT (desc
);
298 SERIAL_WRITE (desc
, &c
, 1);
299 i
= SERIAL_READCHAR (desc
, 2);
307 perror_with_name ("Remote communication error");
309 error ("Remote timeout");
311 error ("Remote connection closed");
322 SERIAL_CLOSE (remote_desc
);
329 recv_udp_buf (fd
, buf
, len
, timeout
)
338 FD_SET (fd
, &readfds
);
342 struct timeval timebuf
;
344 timebuf
.tv_sec
= timeout
;
346 cc
= select (fd
+ 1, &readfds
, 0, 0, &timebuf
);
349 cc
= select (fd
+ 1, &readfds
, 0, 0, 0);
355 perror_with_name ("recv_udp_buf: Bad return value from select:");
357 cc
= recv (fd
, buf
, len
, 0);
360 perror_with_name ("Got an error from recv: ");
364 send_udp_buf (fd
, buf
, len
)
370 cc
= send (fd
, buf
, len
, 0);
376 perror_with_name ("Got an error from send: ");
378 error ("Short count in send: tried %d, sent %d\n", len
, cc
);
380 #endif /* __GO32__ */
383 sparclite_open (name
, from_tty
)
387 struct cleanup
*old_chain
;
392 error ("You need to specify what device or hostname is associated with the SparcLite board.");
394 target_preopen (from_tty
);
396 unpush_target (&sparclite_ops
);
398 if (remote_target_name
)
399 free (remote_target_name
);
401 remote_target_name
= strsave (name
);
403 /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can
404 mean either a serial port on a terminal server, or the IP address of a
405 SPARClite demo board. If there's no colon, then it pretty much has to be
406 a local device (except for DOS... grrmble) */
408 p
= strchr (name
, ' ');
413 while ((*p
!= '\000') && isspace (*p
)) p
++;
415 if (strncmp (name
, "serial", strlen (name
)) == 0)
417 else if (strncmp (name
, "udp", strlen (name
)) == 0)
420 error ("Must specify either `serial' or `udp'.");
426 if (!strchr (name
, ':'))
427 serial_flag
= 1; /* No colon is unambiguous (local device) */
429 error ("Usage: target sparclite serial /dev/ttyb\n\
430 or: target sparclite udp host");
435 remote_desc
= open_tty (p
);
437 old_chain
= make_cleanup (close_tty
, 0);
439 c
= send_resp (remote_desc
, 0x00);
442 error ("Unknown response (0x%x) from SparcLite. Try resetting the board.",
445 c
= send_resp (remote_desc
, 0x55);
448 error ("Sparclite appears to be ill.");
454 struct sockaddr_in sockaddr
;
455 unsigned char buffer
[100];
458 /* Setup the socket. Must be raw UDP. */
460 he
= gethostbyname (p
);
463 error ("No such host %s.", p
);
465 udp_fd
= socket (PF_INET
, SOCK_DGRAM
, 0);
467 old_chain
= make_cleanup (close
, udp_fd
);
469 sockaddr
.sin_family
= PF_INET
;
470 sockaddr
.sin_port
= htons(7000);
471 memcpy (&sockaddr
.sin_addr
.s_addr
, he
->h_addr
, sizeof (struct in_addr
));
473 if (connect (udp_fd
, &sockaddr
, sizeof(sockaddr
)))
474 perror_with_name ("Connect failed");
479 send_udp_buf (udp_fd
, buffer
, 2); /* Request version */
480 cc
= recv_udp_buf (udp_fd
, buffer
, sizeof(buffer
), 5); /* Get response */
482 error ("SPARClite isn't responding.");
485 error ("SPARClite appears to be ill.");
487 error ("UDP downloading is not supported for DOS hosts.");
488 #endif /* __GO32__ */
491 printf_unfiltered ("[SPARClite appears to be alive]\n");
493 push_target (&sparclite_ops
);
495 discard_cleanups (old_chain
);
501 sparclite_close (quitting
)
513 #define LOAD_ADDRESS 0x40000000
516 download (target_name
, args
, from_tty
, write_routine
, start_routine
)
520 void (*write_routine
)();
521 void (*start_routine
)();
523 struct cleanup
*old_chain
;
528 #define WRITESIZE 1024
537 while (*args
!= '\000')
541 while (isspace (*args
)) args
++;
545 while ((*args
!= '\000') && !isspace (*args
)) args
++;
552 else if (strncmp (arg
, "-quiet", strlen (arg
)) == 0)
554 else if (strncmp (arg
, "-nostart", strlen (arg
)) == 0)
557 error ("unknown option `%s'", arg
);
561 filename
= get_exec_file (1);
563 pbfd
= bfd_openr (filename
, gnutarget
);
566 perror_with_name (filename
);
569 old_chain
= make_cleanup (bfd_close
, pbfd
);
571 if (!bfd_check_format (pbfd
, bfd_object
))
572 error ("\"%s\" is not an object file: %s", filename
,
573 bfd_errmsg (bfd_get_error ()));
575 for (section
= pbfd
->sections
; section
; section
= section
->next
)
577 if (bfd_get_section_flags (pbfd
, section
) & SEC_LOAD
)
579 bfd_vma section_address
;
580 bfd_size_type section_size
;
583 section_address
= bfd_get_section_vma (pbfd
, section
);
584 /* Adjust sections from a.out files, since they don't
585 carry their addresses with. */
586 if (bfd_get_flavour (pbfd
) == bfd_target_aout_flavour
)
587 section_address
+= LOAD_ADDRESS
;
589 section_size
= bfd_get_section_size_before_reloc (section
);
592 printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
593 bfd_get_section_name (pbfd
, section
),
598 while (section_size
> 0)
601 static char inds
[] = "|/-\\";
606 count
= min (section_size
, WRITESIZE
);
608 write_routine (pbfd
, section
, fptr
, section_address
, count
);
612 printf_unfiltered ("\r%c", inds
[k
++ % 4]);
613 gdb_flush (gdb_stdout
);
616 section_address
+= count
;
618 section_size
-= count
;
625 entry
= bfd_get_start_address (pbfd
);
628 printf_unfiltered ("[Starting %s at 0x%x]\n", filename
, entry
);
630 start_routine (entry
);
633 do_cleanups (old_chain
);
637 sparclite_serial_start (entry
)
644 store_unsigned_integer (buffer
+ 1, 4, entry
);
646 SERIAL_WRITE (remote_desc
, buffer
, 1 + 4);
647 i
= SERIAL_READCHAR (remote_desc
, 2);
649 error ("Can't start SparcLite. Error code %d\n", i
);
653 sparclite_serial_write (from_bfd
, from_sec
, from_addr
, to_addr
, len
)
660 char buffer
[4 + 4 + WRITESIZE
]; /* addr + len + data */
661 unsigned char checksum
;
664 store_unsigned_integer (buffer
, 4, to_addr
); /* Address */
665 store_unsigned_integer (buffer
+ 4, 4, len
); /* Length */
667 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 8, from_addr
, len
);
670 for (i
= 0; i
< len
; i
++)
671 checksum
+= buffer
[8 + i
];
673 i
= send_resp (remote_desc
, 0x01);
676 error ("Bad response from load command (0x%x)", i
);
678 SERIAL_WRITE (remote_desc
, buffer
, 4 + 4 + len
);
679 i
= SERIAL_READCHAR (remote_desc
, 2);
681 error ("I/O error in serial code. Return code %d\n", i
);
684 error ("Bad checksum from load command (0x%x)", i
);
689 static unsigned short
690 calc_checksum (buffer
, count
)
691 unsigned char *buffer
;
694 unsigned short checksum
;
697 for (; count
> 0; count
-= 2, buffer
+= 2)
698 checksum
+= (*buffer
<< 8) | *(buffer
+ 1);
701 checksum
+= *buffer
<< 8;
707 sparclite_udp_start (entry
)
710 unsigned char buffer
[6];
715 buffer
[2] = entry
>> 24;
716 buffer
[3] = entry
>> 16;
717 buffer
[4] = entry
>> 8;
720 send_udp_buf (udp_fd
, buffer
, 6); /* Send start addr */
721 i
= recv_udp_buf (udp_fd
, buffer
, sizeof(buffer
), -1); /* Get response */
723 if (i
< 1 || buffer
[0] != 0x55)
724 error ("Failed to take start address.");
728 sparclite_udp_write (from_bfd
, from_sec
, from_addr
, to_addr
, len
)
735 unsigned char buffer
[2000];
736 unsigned short checksum
;
737 static int pkt_num
= 0;
738 static unsigned long old_addr
= -1;
743 if (to_addr
!= old_addr
)
745 buffer
[0] = 0x1; /* Load command */
746 buffer
[1] = 0x1; /* Loading address */
747 buffer
[2] = to_addr
>> 24;
748 buffer
[3] = to_addr
>> 16;
749 buffer
[4] = to_addr
>> 8;
753 for (i
= 0; i
< 6; i
++)
754 checksum
+= buffer
[i
];
757 send_udp_buf (udp_fd
, buffer
, 6);
758 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, -1);
761 error ("Got back short checksum for load addr.");
763 if (checksum
!= buffer
[0])
764 error ("Got back bad checksum for load addr.");
766 pkt_num
= 0; /* Load addr resets packet seq # */
770 bfd_get_section_contents (from_bfd
, from_sec
, buffer
+ 6, from_addr
,
773 checksum
= calc_checksum (buffer
+ 6, len
);
775 buffer
[0] = 0x1; /* Load command */
776 buffer
[1] = 0x2; /* Loading data */
777 buffer
[2] = pkt_num
>> 8;
779 buffer
[4] = checksum
>> 8;
780 buffer
[5] = checksum
;
782 send_udp_buf (udp_fd
, buffer
, len
+ 6);
783 i
= recv_udp_buf (udp_fd
, buffer
, sizeof buffer
, 3);
787 fprintf_unfiltered (gdb_stderr
, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len
, to_addr
);
791 if (buffer
[0] != 0xff)
792 error ("Got back bad response for load data.");
801 #endif /* __GO32__ */
804 sparclite_download (filename
, from_tty
)
810 download (remote_target_name
, filename
, from_tty
, sparclite_udp_write
,
811 sparclite_udp_start
);
813 abort (); /* sparclite_open should prevent this! */
816 download (remote_target_name
, filename
, from_tty
, sparclite_serial_write
,
817 sparclite_serial_start
);
820 /* Define the target subroutine names */
822 static struct target_ops sparclite_ops
=
824 "sparclite", /* to_shortname */
825 "SPARClite remote target", /* to_longname */
826 "Use a remote SPARClite target board via a serial line, using a gdb-specific protocol.\n\
827 Specify the serial device it is connected to (e.g. /dev/ttya).", /* to_doc */
828 sparclite_open
, /* to_open */
829 sparclite_close
, /* to_close */
834 0, /* to_fetch_registers */
835 0, /* to_store_registers */
836 0, /* to_prepare_to_store */
837 0, /* to_xfer_memory */
838 0, /* to_files_info */
839 0, /* to_insert_breakpoint */
840 0, /* to_remove_breakpoint */
841 0, /* to_terminal_init */
842 0, /* to_terminal_inferior */
843 0, /* to_terminal_ours_for_output */
844 0, /* to_terminal_ours */
845 0, /* to_terminal_info */
847 sparclite_download
, /* to_load */
848 0, /* to_lookup_symbol */
849 0, /* to_create_inferior */
850 0, /* to_mourn_inferior */
852 0, /* to_notice_signals */
854 download_stratum
, /* to_stratum */
856 0, /* to_has_all_memory */
857 0, /* to_has_memory */
858 0, /* to_has_stack */
859 0, /* to_has_registers */
860 0, /* to_has_execution */
862 0, /* sections_end */
863 OPS_MAGIC
/* to_magic */
867 _initialize_sparcl_tdep ()
869 add_target (&sparclite_ops
);