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>
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)
242 if (TARGET_HW_BREAK_LIMIT == 0)
244 else if (cnt <= TARGET_HW_BREAK_LIMIT)
247 if (TARGET_HW_WATCH_LIMIT == 0)
251 else if (cnt <= TARGET_HW_WATCH_LIMIT)
257 sparclite_stopped_data_address ()
259 CORE_ADDR dsr, dda1, dda2;
261 dsr = read_register (DSR_REGNUM);
262 dda1 = read_register (DDA1_REGNUM);
263 dda2 = read_register (DDA2_REGNUM);
279 desc = SERIAL_OPEN (name);
281 perror_with_name (name);
285 if (SERIAL_SETBAUDRATE (desc, baud_rate))
288 perror_with_name (name);
294 SERIAL_FLUSH_INPUT (desc);
306 SERIAL_WRITE (desc, &c, 1);
307 i = SERIAL_READCHAR (desc, 2);
315 perror_with_name ("Remote communication error");
317 error ("Remote timeout");
319 error ("Remote connection closed");
330 SERIAL_CLOSE (remote_desc);
337 recv_udp_buf (fd, buf, len, timeout)
346 FD_SET (fd, &readfds);
350 struct timeval timebuf;
352 timebuf.tv_sec = timeout;
354 cc = select (fd + 1, &readfds, 0, 0, &timebuf);
357 cc = select (fd + 1, &readfds, 0, 0, 0);
363 perror_with_name ("recv_udp_buf: Bad return value from select:");
365 cc = recv (fd, buf, len, 0);
368 perror_with_name ("Got an error from recv: ");
372 send_udp_buf (fd, buf, len)
378 cc = send (fd, buf, len, 0);
384 perror_with_name ("Got an error from send: ");
386 error ("Short count in send: tried %d, sent %d\n", len, cc);
388 #endif /* __GO32__ */
391 sparclite_open (name, from_tty)
395 struct cleanup *old_chain;
400 error ("You need to specify what device or hostname is associated with the SparcLite board.");
402 target_preopen (from_tty);
404 unpush_target (&sparclite_ops);
406 if (remote_target_name)
407 free (remote_target_name);
409 remote_target_name = strsave (name);
411 /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can
412 mean either a serial port on a terminal server, or the IP address of a
413 SPARClite demo board. If there's no colon, then it pretty much has to be
414 a local device (except for DOS... grrmble) */
416 p = strchr (name, ' ');
421 while ((*p != '\000') && isspace (*p)) p++;
423 if (strncmp (name, "serial", strlen (name)) == 0)
425 else if (strncmp (name, "udp", strlen (name)) == 0)
428 error ("Must specify either `serial' or `udp'.");
434 if (!strchr (name, ':'))
435 serial_flag = 1; /* No colon is unambiguous (local device) */
437 error ("Usage: target sparclite serial /dev/ttyb\n\
438 or: target sparclite udp host");
443 remote_desc = open_tty (p);
445 old_chain = make_cleanup (close_tty, 0);
447 c = send_resp (remote_desc, 0x00);
450 error ("Unknown response (0x%x) from SparcLite. Try resetting the board.",
453 c = send_resp (remote_desc, 0x55);
456 error ("Sparclite appears to be ill.");
462 struct sockaddr_in sockaddr;
463 unsigned char buffer[100];
466 /* Setup the socket. Must be raw UDP. */
468 he = gethostbyname (p);
471 error ("No such host %s.", p);
473 udp_fd = socket (PF_INET, SOCK_DGRAM, 0);
475 old_chain = make_cleanup (close, udp_fd);
477 sockaddr.sin_family = PF_INET;
478 sockaddr.sin_port = htons(7000);
479 memcpy (&sockaddr.sin_addr.s_addr, he->h_addr, sizeof (struct in_addr));
481 if (connect (udp_fd, &sockaddr, sizeof(sockaddr)))
482 perror_with_name ("Connect failed");
487 send_udp_buf (udp_fd, buffer, 2); /* Request version */
488 cc = recv_udp_buf (udp_fd, buffer, sizeof(buffer), 5); /* Get response */
490 error ("SPARClite isn't responding.");
493 error ("SPARClite appears to be ill.");
495 error ("UDP downloading is not supported for DOS hosts.");
496 #endif /* __GO32__ */
499 printf_unfiltered ("[SPARClite appears to be alive]\n");
501 push_target (&sparclite_ops);
503 discard_cleanups (old_chain);
509 sparclite_close (quitting)
521 #define LOAD_ADDRESS 0x40000000
524 download (target_name, args, from_tty, write_routine, start_routine)
528 void (*write_routine)();
529 void (*start_routine)();
531 struct cleanup *old_chain;
536 #define WRITESIZE 1024
545 while (*args != '\000')
549 while (isspace (*args)) args++;
553 while ((*args != '\000') && !isspace (*args)) args++;
560 else if (strncmp (arg, "-quiet", strlen (arg)) == 0)
562 else if (strncmp (arg, "-nostart", strlen (arg)) == 0)
565 error ("unknown option `%s'", arg);
569 filename = get_exec_file (1);
571 pbfd = bfd_openr (filename, gnutarget);
574 perror_with_name (filename);
577 old_chain = make_cleanup (bfd_close, pbfd);
579 if (!bfd_check_format (pbfd, bfd_object))
580 error ("\"%s\" is not an object file: %s", filename,
581 bfd_errmsg (bfd_get_error ()));
583 for (section = pbfd->sections; section; section = section->next)
585 if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)
587 bfd_vma section_address;
588 bfd_size_type section_size;
591 section_address = bfd_get_section_vma (pbfd, section);
592 /* Adjust sections from a.out files, since they don't
593 carry their addresses with. */
594 if (bfd_get_flavour (pbfd) == bfd_target_aout_flavour)
595 section_address += LOAD_ADDRESS;
597 section_size = bfd_get_section_size_before_reloc (section);
600 printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
601 bfd_get_section_name (pbfd, section),
606 while (section_size > 0)
609 static char inds[] = "|/-\\";
614 count = min (section_size, WRITESIZE);
616 write_routine (pbfd, section, fptr, section_address, count);
620 printf_unfiltered ("\r%c", inds[k++ % 4]);
621 gdb_flush (gdb_stdout);
624 section_address += count;
626 section_size -= count;
633 entry = bfd_get_start_address (pbfd);
636 printf_unfiltered ("[Starting %s at 0x%x]\n", filename, entry);
638 start_routine (entry);
641 do_cleanups (old_chain);
645 sparclite_serial_start (entry)
652 store_unsigned_integer (buffer + 1, 4, entry);
654 SERIAL_WRITE (remote_desc, buffer, 1 + 4);
655 i = SERIAL_READCHAR (remote_desc, 2);
657 error ("Can't start SparcLite. Error code %d\n", i);
661 sparclite_serial_write (from_bfd, from_sec, from_addr, to_addr, len)
668 char buffer[4 + 4 + WRITESIZE]; /* addr + len + data */
669 unsigned char checksum;
672 store_unsigned_integer (buffer, 4, to_addr); /* Address */
673 store_unsigned_integer (buffer + 4, 4, len); /* Length */
675 bfd_get_section_contents (from_bfd, from_sec, buffer + 8, from_addr, len);
678 for (i = 0; i < len; i++)
679 checksum += buffer[8 + i];
681 i = send_resp (remote_desc, 0x01);
684 error ("Bad response from load command (0x%x)", i);
686 SERIAL_WRITE (remote_desc, buffer, 4 + 4 + len);
687 i = SERIAL_READCHAR (remote_desc, 2);
689 error ("I/O error in serial code. Return code %d\n", i);
692 error ("Bad checksum from load command (0x%x)", i);
697 static unsigned short
698 calc_checksum (buffer, count)
699 unsigned char *buffer;
702 unsigned short checksum;
705 for (; count > 0; count -= 2, buffer += 2)
706 checksum += (*buffer << 8) | *(buffer + 1);
709 checksum += *buffer << 8;
715 sparclite_udp_start (entry)
718 unsigned char buffer[6];
723 buffer[2] = entry >> 24;
724 buffer[3] = entry >> 16;
725 buffer[4] = entry >> 8;
728 send_udp_buf (udp_fd, buffer, 6); /* Send start addr */
729 i = recv_udp_buf (udp_fd, buffer, sizeof(buffer), -1); /* Get response */
731 if (i < 1 || buffer[0] != 0x55)
732 error ("Failed to take start address.");
736 sparclite_udp_write (from_bfd, from_sec, from_addr, to_addr, len)
743 unsigned char buffer[2000];
744 unsigned short checksum;
745 static int pkt_num = 0;
746 static unsigned long old_addr = -1;
751 if (to_addr != old_addr)
753 buffer[0] = 0x1; /* Load command */
754 buffer[1] = 0x1; /* Loading address */
755 buffer[2] = to_addr >> 24;
756 buffer[3] = to_addr >> 16;
757 buffer[4] = to_addr >> 8;
761 for (i = 0; i < 6; i++)
762 checksum += buffer[i];
765 send_udp_buf (udp_fd, buffer, 6);
766 i = recv_udp_buf (udp_fd, buffer, sizeof buffer, -1);
769 error ("Got back short checksum for load addr.");
771 if (checksum != buffer[0])
772 error ("Got back bad checksum for load addr.");
774 pkt_num = 0; /* Load addr resets packet seq # */
778 bfd_get_section_contents (from_bfd, from_sec, buffer + 6, from_addr,
781 checksum = calc_checksum (buffer + 6, len);
783 buffer[0] = 0x1; /* Load command */
784 buffer[1] = 0x2; /* Loading data */
785 buffer[2] = pkt_num >> 8;
787 buffer[4] = checksum >> 8;
788 buffer[5] = checksum;
790 send_udp_buf (udp_fd, buffer, len + 6);
791 i = recv_udp_buf (udp_fd, buffer, sizeof buffer, 3);
795 fprintf_unfiltered (gdb_stderr, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len, to_addr);
799 if (buffer[0] != 0xff)
800 error ("Got back bad response for load data.");
809 #endif /* __GO32__ */
812 sparclite_download (filename, from_tty)
818 download (remote_target_name, filename, from_tty, sparclite_udp_write,
819 sparclite_udp_start);
821 abort (); /* sparclite_open should prevent this! */
824 download (remote_target_name, filename, from_tty, sparclite_serial_write,
825 sparclite_serial_start);
828 /* Define the target subroutine names */
830 static struct target_ops sparclite_ops =
832 "sparclite", /* to_shortname */
833 "SPARClite remote target", /* to_longname */
834 "Use a remote SPARClite target board via a serial line, using a gdb-specific protocol.\n\
835 Specify the serial device it is connected to (e.g. /dev/ttya).", /* to_doc */
836 sparclite_open, /* to_open */
837 sparclite_close, /* to_close */
842 0, /* to_fetch_registers */
843 0, /* to_store_registers */
844 0, /* to_prepare_to_store */
845 0, /* to_xfer_memory */
846 0, /* to_files_info */
847 0, /* to_insert_breakpoint */
848 0, /* to_remove_breakpoint */
849 0, /* to_terminal_init */
850 0, /* to_terminal_inferior */
851 0, /* to_terminal_ours_for_output */
852 0, /* to_terminal_ours */
853 0, /* to_terminal_info */
855 sparclite_download, /* to_load */
856 0, /* to_lookup_symbol */
857 0, /* to_create_inferior */
858 0, /* to_mourn_inferior */
860 0, /* to_notice_signals */
862 download_stratum, /* to_stratum */
864 0, /* to_has_all_memory */
865 0, /* to_has_memory */
866 0, /* to_has_stack */
867 0, /* to_has_registers */
868 0, /* to_has_execution */
870 0, /* sections_end */
871 OPS_MAGIC /* to_magic */
875 _initialize_sparcl_tdep ()
877 add_target (&sparclite_ops);