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)) || defined(__CYGWIN32__)
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 /* not used */
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 /* Watchpoints not supported on simulator. */
236 if (strcmp (target_shortname, "sim") == 0)
239 if (type == bp_hardware_breakpoint)
241 if (TARGET_HW_BREAK_LIMIT == 0)
243 else if (cnt <= TARGET_HW_BREAK_LIMIT)
248 if (TARGET_HW_WATCH_LIMIT == 0)
252 else if (cnt <= TARGET_HW_WATCH_LIMIT)
259 sparclite_stopped_data_address ()
261 CORE_ADDR dsr, dda1, dda2;
263 dsr = read_register (DSR_REGNUM);
264 dda1 = read_register (DDA1_REGNUM);
265 dda2 = read_register (DDA2_REGNUM);
281 desc = SERIAL_OPEN (name);
283 perror_with_name (name);
287 if (SERIAL_SETBAUDRATE (desc, baud_rate))
290 perror_with_name (name);
296 SERIAL_FLUSH_INPUT (desc);
301 /* Read a single character from the remote end, masking it down to 7 bits. */
304 readchar (desc, timeout)
311 ch = SERIAL_READCHAR (desc, timeout);
316 error ("SPARClite remote connection closed");
318 perror_with_name ("SPARClite communication error");
320 error ("SPARClite remote timeout");
322 if (remote_debug > 0)
324 sprintf (s, "[%02x]", ch & 0xff);
325 puts_debug ("read -->", s, "<--");
332 debug_serial_write (desc, buf, len)
339 SERIAL_WRITE (desc, buf, len);
340 if (remote_debug > 0)
344 sprintf (s, "[%02x]", *buf & 0xff);
345 puts_debug ("Sent -->", s, "<--");
357 debug_serial_write (desc, &c, 1);
358 return readchar (desc, remote_timeout);
368 SERIAL_CLOSE (remote_desc);
375 recv_udp_buf (fd, buf, len, timeout)
384 FD_SET (fd, &readfds);
388 struct timeval timebuf;
390 timebuf.tv_sec = timeout;
392 cc = select (fd + 1, &readfds, 0, 0, &timebuf);
395 cc = select (fd + 1, &readfds, 0, 0, 0);
401 perror_with_name ("recv_udp_buf: Bad return value from select:");
403 cc = recv (fd, buf, len, 0);
406 perror_with_name ("Got an error from recv: ");
410 send_udp_buf (fd, buf, len)
416 cc = send (fd, buf, len, 0);
422 perror_with_name ("Got an error from send: ");
424 error ("Short count in send: tried %d, sent %d\n", len, cc);
426 #endif /* HAVE_SOCKETS */
429 sparclite_open (name, from_tty)
433 struct cleanup *old_chain;
438 error ("You need to specify what device or hostname is associated with the SparcLite board.");
440 target_preopen (from_tty);
442 unpush_target (&sparclite_ops);
444 if (remote_target_name)
445 free (remote_target_name);
447 remote_target_name = strsave (name);
449 /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can
450 mean either a serial port on a terminal server, or the IP address of a
451 SPARClite demo board. If there's no colon, then it pretty much has to be
452 a local device (except for DOS... grrmble) */
454 p = strchr (name, ' ');
459 while ((*p != '\000') && isspace (*p)) 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)
559 #define LOAD_ADDRESS 0x40000000
562 download (target_name, args, from_tty, write_routine, start_routine)
566 void (*write_routine) PARAMS ((bfd *from_bfd, asection *from_sec,
567 file_ptr from_addr, bfd_vma to_addr, int len));
568 void (*start_routine) PARAMS ((bfd_vma entry));
570 struct cleanup *old_chain;
575 #define WRITESIZE 1024
584 while (*args != '\000')
588 while (isspace (*args)) args++;
592 while ((*args != '\000') && !isspace (*args)) args++;
599 else if (strncmp (arg, "-quiet", strlen (arg)) == 0)
601 else if (strncmp (arg, "-nostart", strlen (arg)) == 0)
604 error ("unknown option `%s'", arg);
608 filename = get_exec_file (1);
610 pbfd = bfd_openr (filename, gnutarget);
613 perror_with_name (filename);
616 old_chain = make_cleanup ((make_cleanup_func) bfd_close, pbfd);
618 if (!bfd_check_format (pbfd, bfd_object))
619 error ("\"%s\" is not an object file: %s", filename,
620 bfd_errmsg (bfd_get_error ()));
622 for (section = pbfd->sections; section; section = section->next)
624 if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)
626 bfd_vma section_address;
627 bfd_size_type section_size;
629 const char *section_name;
631 section_name = bfd_get_section_name(pbfd, section);
633 section_address = bfd_get_section_vma (pbfd, section);
635 /* Adjust sections from a.out files, since they don't
636 carry their addresses with. */
637 if (bfd_get_flavour (pbfd) == bfd_target_aout_flavour)
639 if (strcmp (section_name, ".text") == 0)
640 section_address = bfd_get_start_address (pbfd);
641 else if (strcmp (section_name, ".data") == 0)
643 /* Read the first 8 bytes of the data section.
644 There should be the string 'DaTa' followed by
645 a word containing the actual section address. */
648 char signature[4]; /* 'DaTa' */
649 unsigned char sdata[4]; /* &sdata */
651 bfd_get_section_contents (pbfd, section, &marker, 0,
653 if (strncmp (marker.signature, "DaTa", 4) == 0)
655 if (TARGET_BYTE_ORDER == BIG_ENDIAN)
656 section_address = bfd_getb32 (marker.sdata);
658 section_address = bfd_getl32 (marker.sdata);
663 section_size = bfd_get_section_size_before_reloc (section);
666 printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
667 bfd_get_section_name (pbfd, section),
672 while (section_size > 0)
675 static char inds[] = "|/-\\";
680 count = min (section_size, WRITESIZE);
682 write_routine (pbfd, section, fptr, section_address, count);
686 printf_unfiltered ("\r%c", inds[k++ % 4]);
687 gdb_flush (gdb_stdout);
690 section_address += count;
692 section_size -= count;
699 entry = bfd_get_start_address (pbfd);
702 printf_unfiltered ("[Starting %s at 0x%x]\n", filename, entry);
704 start_routine (entry);
707 do_cleanups (old_chain);
711 sparclite_serial_start (entry)
718 store_unsigned_integer (buffer + 1, 4, entry);
720 debug_serial_write (remote_desc, buffer, 1 + 4);
721 i = readchar (remote_desc, remote_timeout);
723 error ("Can't start SparcLite. Error code %d\n", i);
727 sparclite_serial_write (from_bfd, from_sec, from_addr, to_addr, len)
734 char buffer[4 + 4 + WRITESIZE]; /* addr + len + data */
735 unsigned char checksum;
738 store_unsigned_integer (buffer, 4, to_addr); /* Address */
739 store_unsigned_integer (buffer + 4, 4, len); /* Length */
741 bfd_get_section_contents (from_bfd, from_sec, buffer + 8, from_addr, len);
744 for (i = 0; i < len; i++)
745 checksum += buffer[8 + i];
747 i = send_resp (remote_desc, 0x01);
750 error ("Bad response from load command (0x%x)", i);
752 debug_serial_write (remote_desc, buffer, 4 + 4 + len);
753 i = readchar (remote_desc, remote_timeout);
756 error ("Bad checksum from load command (0x%x)", i);
761 static unsigned short
762 calc_checksum (buffer, count)
763 unsigned char *buffer;
766 unsigned short checksum;
769 for (; count > 0; count -= 2, buffer += 2)
770 checksum += (*buffer << 8) | *(buffer + 1);
773 checksum += *buffer << 8;
779 sparclite_udp_start (entry)
782 unsigned char buffer[6];
787 buffer[2] = entry >> 24;
788 buffer[3] = entry >> 16;
789 buffer[4] = entry >> 8;
792 send_udp_buf (udp_fd, buffer, 6); /* Send start addr */
793 i = recv_udp_buf (udp_fd, buffer, sizeof(buffer), -1); /* Get response */
795 if (i < 1 || buffer[0] != 0x55)
796 error ("Failed to take start address.");
800 sparclite_udp_write (from_bfd, from_sec, from_addr, to_addr, len)
807 unsigned char buffer[2000];
808 unsigned short checksum;
809 static int pkt_num = 0;
810 static unsigned long old_addr = -1;
815 if (to_addr != old_addr)
817 buffer[0] = 0x1; /* Load command */
818 buffer[1] = 0x1; /* Loading address */
819 buffer[2] = to_addr >> 24;
820 buffer[3] = to_addr >> 16;
821 buffer[4] = to_addr >> 8;
825 for (i = 0; i < 6; i++)
826 checksum += buffer[i];
829 send_udp_buf (udp_fd, buffer, 6);
830 i = recv_udp_buf (udp_fd, buffer, sizeof buffer, -1);
833 error ("Got back short checksum for load addr.");
835 if (checksum != buffer[0])
836 error ("Got back bad checksum for load addr.");
838 pkt_num = 0; /* Load addr resets packet seq # */
842 bfd_get_section_contents (from_bfd, from_sec, buffer + 6, from_addr,
845 checksum = calc_checksum (buffer + 6, len);
847 buffer[0] = 0x1; /* Load command */
848 buffer[1] = 0x2; /* Loading data */
849 buffer[2] = pkt_num >> 8;
851 buffer[4] = checksum >> 8;
852 buffer[5] = checksum;
854 send_udp_buf (udp_fd, buffer, len + 6);
855 i = recv_udp_buf (udp_fd, buffer, sizeof buffer, 3);
859 fprintf_unfiltered (gdb_stderr, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len, to_addr);
863 if (buffer[0] != 0xff)
864 error ("Got back bad response for load data.");
873 #endif /* HAVE_SOCKETS */
876 sparclite_download (filename, from_tty)
882 download (remote_target_name, filename, from_tty, sparclite_udp_write,
883 sparclite_udp_start);
885 abort (); /* sparclite_open should prevent this! */
888 download (remote_target_name, filename, from_tty, sparclite_serial_write,
889 sparclite_serial_start);
892 /* Define the target subroutine names */
894 static struct target_ops sparclite_ops ;
897 init_sparclite_ops(void)
899 sparclite_ops.to_shortname = "sparclite";
900 sparclite_ops.to_longname = "SPARClite remote target";
901 sparclite_ops.to_doc = "Use a remote SPARClite target board via a serial line; using a gdb-specific protocol.\n\
902 Specify the serial 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_attach = 0;
906 sparclite_ops.to_post_attach = NULL;
907 sparclite_ops.to_require_attach = NULL;
908 sparclite_ops.to_detach = 0;
909 sparclite_ops.to_require_detach = NULL;
910 sparclite_ops.to_resume = 0;
911 sparclite_ops.to_wait = 0;
912 sparclite_ops.to_post_wait = NULL;
913 sparclite_ops.to_fetch_registers = 0;
914 sparclite_ops.to_store_registers = 0;
915 sparclite_ops.to_prepare_to_store = 0;
916 sparclite_ops.to_xfer_memory = 0;
917 sparclite_ops.to_files_info = 0;
918 sparclite_ops.to_insert_breakpoint = 0;
919 sparclite_ops.to_remove_breakpoint = 0;
920 sparclite_ops.to_terminal_init = 0;
921 sparclite_ops.to_terminal_inferior = 0;
922 sparclite_ops.to_terminal_ours_for_output = 0;
923 sparclite_ops.to_terminal_ours = 0;
924 sparclite_ops.to_terminal_info = 0;
925 sparclite_ops.to_kill = 0;
926 sparclite_ops.to_load = sparclite_download;
927 sparclite_ops.to_lookup_symbol = 0;
928 sparclite_ops.to_create_inferior = 0;
929 sparclite_ops.to_post_startup_inferior = NULL;
930 sparclite_ops.to_acknowledge_created_inferior = NULL;
931 sparclite_ops.to_clone_and_follow_inferior = NULL;
932 sparclite_ops.to_post_follow_inferior_by_clone = NULL;
933 sparclite_ops.to_insert_fork_catchpoint = NULL;
934 sparclite_ops.to_remove_fork_catchpoint = NULL;
935 sparclite_ops.to_insert_vfork_catchpoint = NULL;
936 sparclite_ops.to_remove_vfork_catchpoint = NULL;
937 sparclite_ops.to_has_forked = NULL;
938 sparclite_ops.to_has_vforked = NULL;
939 sparclite_ops.to_can_follow_vfork_prior_to_exec = NULL;
940 sparclite_ops.to_post_follow_vfork = NULL;
941 sparclite_ops.to_insert_exec_catchpoint = NULL;
942 sparclite_ops.to_remove_exec_catchpoint = NULL;
943 sparclite_ops.to_has_execd = NULL;
944 sparclite_ops.to_reported_exec_events_per_exec_call = NULL;
945 sparclite_ops.to_has_exited = NULL;
946 sparclite_ops.to_mourn_inferior = 0;
947 sparclite_ops.to_can_run = 0;
948 sparclite_ops.to_notice_signals = 0;
949 sparclite_ops.to_thread_alive = 0;
950 sparclite_ops.to_stop = 0;
951 sparclite_ops.to_pid_to_exec_file = NULL;
952 sparclite_ops.to_core_file_to_sym_file = NULL;
953 sparclite_ops.to_stratum = download_stratum;
954 sparclite_ops.DONT_USE = 0;
955 sparclite_ops.to_has_all_memory = 0;
956 sparclite_ops.to_has_memory = 0;
957 sparclite_ops.to_has_stack = 0;
958 sparclite_ops.to_has_registers = 0;
959 sparclite_ops.to_has_execution = 0;
960 sparclite_ops.to_sections = 0;
961 sparclite_ops.to_sections_end = 0;
962 sparclite_ops.to_magic = OPS_MAGIC ;
963 } /* init_sparclite_ops */
966 _initialize_sparcl_tdep ()
968 init_sparclite_ops() ;
969 add_target (&sparclite_ops);