1/* Remote debugging interface for Renesas E7000 ICE, for GDB 2 3 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 4 2002, 2003, 2004 Free Software Foundation, Inc. 5 6 Contributed by Cygnus Support. 7 8 Written by Steve Chamberlain for Cygnus Support. 9 10 This file is part of GDB. 11 12 This program is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 2 of the License, or 15 (at your option) any later version. 16 17 This program is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software 24 Foundation, Inc., 59 Temple Place - Suite 330, 25 Boston, MA 02111-1307, USA. */ 26 27/* The E7000 is an in-circuit emulator for the Renesas H8/300-H and 28 Renesas-SH processor. It has serial port and a lan port. 29 30 The monitor command set makes it difficult to load large ammounts of 31 data over the lan without using ftp - so try not to issue load 32 commands when communicating over ethernet; use the ftpload command. 33 34 The monitor pauses for a second when dumping srecords to the serial 35 line too, so we use a slower per byte mechanism but without the 36 startup overhead. Even so, it's pretty slow... */ 37 38#include "defs.h" 39#include "gdbcore.h" 40#include "gdbarch.h" 41#include "inferior.h" 42#include "target.h" 43#include "value.h" 44#include "command.h" 45#include "gdb_string.h" 46#include "gdbcmd.h" 47#include <sys/types.h> 48#include "serial.h" 49#include "remote-utils.h" 50#include "symfile.h" 51#include "regcache.h" 52#include <time.h> 53#include <ctype.h> 54 55 56#if 1 57#define HARD_BREAKPOINTS /* Now handled by set option. */ 58#define BC_BREAKPOINTS use_hard_breakpoints 59#endif 60 61#define CTRLC 0x03 62#define ENQ 0x05 63#define ACK 0x06 64#define CTRLZ 0x1a 65 66/* This file is used by 2 different targets, sh-elf and h8300. The 67 h8300 is not multiarched and doesn't use the registers defined in 68 tm-sh.h. To avoid using a macro GDB_TARGET_IS_SH, we do runtime check 69 of the target, which requires that these namse below are always 70 defined also in the h8300 case. */ 71 72#if !defined (PR_REGNUM) 73#define PR_REGNUM -1 74#endif 75#if !defined (GBR_REGNUM) 76#define GBR_REGNUM -1 77#endif 78#if !defined (VBR_REGNUM) 79#define VBR_REGNUM -1 80#endif 81#if !defined (MACH_REGNUM) 82#define MACH_REGNUM -1 83#endif 84#if !defined (MACL_REGNUM) 85#define MACL_REGNUM -1 86#endif 87#if !defined (SR_REGNUM) 88#define SR_REGNUM -1 89#endif 90 91extern void report_transfer_performance (unsigned long, time_t, time_t); 92 93extern char *sh_processor_type; 94 95/* Local function declarations. */ 96 97static void e7000_close (int); 98 99static void e7000_fetch_register (int); 100 101static void e7000_store_register (int); 102 103static void e7000_command (char *, int); 104 105static void e7000_login_command (char *, int); 106 107static void e7000_ftp_command (char *, int); 108 109static void e7000_drain_command (char *, int); 110 111static void expect (char *); 112 113static void expect_full_prompt (void); 114 115static void expect_prompt (void); 116 117static int e7000_parse_device (char *args, char *dev_name, int baudrate); 118/* Variables. */ 119 120static struct serial *e7000_desc; 121 122/* Allow user to chose between using hardware breakpoints or memory. */ 123static int use_hard_breakpoints = 0; /* use sw breakpoints by default */ 124 125/* Nonzero if using the tcp serial driver. */ 126 127static int using_tcp; /* direct tcp connection to target */ 128static int using_tcp_remote; /* indirect connection to target 129 via tcp to controller */ 130 131/* Nonzero if using the pc isa card. */ 132 133static int using_pc; 134 135extern struct target_ops e7000_ops; /* Forward declaration */ 136 137char *ENQSTRING = "\005"; 138 139/* Nonzero if some routine (as opposed to the user) wants echoing. 140 FIXME: Do this reentrantly with an extra parameter. */ 141 142static int echo; 143 144static int ctrl_c; 145 146static int timeout = 20; 147 148/* Send data to e7000debug. */ 149 150static void 151puts_e7000debug (char *buf) 152{ 153 if (!e7000_desc) 154 error ("Use \"target e7000 ...\" first."); 155 156 if (remote_debug) 157 printf_unfiltered ("Sending %s\n", buf); 158 159 if (serial_write (e7000_desc, buf, strlen (buf))) 160 fprintf_unfiltered (gdb_stderr, "serial_write failed: %s\n", safe_strerror (errno)); 161 162 /* And expect to see it echoed, unless using the pc interface */ 163#if 0 164 if (!using_pc) 165#endif 166 expect (buf); 167} 168 169static void 170putchar_e7000 (int x) 171{ 172 char b[1]; 173 174 b[0] = x; 175 serial_write (e7000_desc, b, 1); 176} 177 178static void 179write_e7000 (char *s) 180{ 181 serial_write (e7000_desc, s, strlen (s)); 182} 183 184static int 185normal (int x) 186{ 187 if (x == '\n') 188 return '\r'; 189 return x; 190} 191 192/* Read a character from the remote system, doing all the fancy timeout 193 stuff. Handles serial errors and EOF. If TIMEOUT == 0, and no chars, 194 returns -1, else returns next char. Discards chars > 127. */ 195 196static int 197readchar (int timeout) 198{ 199 int c; 200 201 do 202 { 203 c = serial_readchar (e7000_desc, timeout); 204 } 205 while (c > 127); 206 207 if (c == SERIAL_TIMEOUT) 208 { 209 if (timeout == 0) 210 return -1; 211 echo = 0; 212 error ("Timeout reading from remote system."); 213 } 214 else if (c < 0) 215 error ("Serial communication error"); 216 217 if (remote_debug) 218 { 219 putchar_unfiltered (c); 220 gdb_flush (gdb_stdout); 221 } 222 223 return normal (c); 224} 225 226#if 0 227char * 228tl (int x) 229{ 230 static char b[8][10]; 231 static int p; 232 233 p++; 234 p &= 7; 235 if (x >= ' ') 236 { 237 b[p][0] = x; 238 b[p][1] = 0; 239 } 240 else 241 { 242 sprintf (b[p], "<%d>", x); 243 } 244 245 return b[p]; 246} 247#endif 248 249/* Scan input from the remote system, until STRING is found. If 250 DISCARD is non-zero, then discard non-matching input, else print it 251 out. Let the user break out immediately. */ 252 253static void 254expect (char *string) 255{ 256 char *p = string; 257 int c; 258 int nl = 0; 259 260 while (1) 261 { 262 c = readchar (timeout); 263 264 if (echo) 265 { 266 if (c == '\r' || c == '\n') 267 { 268 if (!nl) 269 putchar_unfiltered ('\n'); 270 nl = 1; 271 } 272 else 273 { 274 nl = 0; 275 putchar_unfiltered (c); 276 } 277 gdb_flush (gdb_stdout); 278 } 279 if (normal (c) == normal (*p++)) 280 { 281 if (*p == '\0') 282 return; 283 } 284 else 285 { 286 p = string; 287 288 if (normal (c) == normal (string[0])) 289 p++; 290 } 291 } 292} 293 294/* Keep discarding input until we see the e7000 prompt. 295 296 The convention for dealing with the prompt is that you 297 o give your command 298 o *then* wait for the prompt. 299 300 Thus the last thing that a procedure does with the serial line will 301 be an expect_prompt(). Exception: e7000_resume does not wait for 302 the prompt, because the terminal is being handed over to the 303 inferior. However, the next thing which happens after that is a 304 e7000_wait which does wait for the prompt. Note that this includes 305 abnormal exit, e.g. error(). This is necessary to prevent getting 306 into states from which we can't recover. */ 307 308static void 309expect_prompt (void) 310{ 311 expect (":"); 312} 313 314static void 315expect_full_prompt (void) 316{ 317 expect ("\r:"); 318} 319 320static int 321convert_hex_digit (int ch) 322{ 323 if (ch >= '0' && ch <= '9') 324 return ch - '0'; 325 else if (ch >= 'A' && ch <= 'F') 326 return ch - 'A' + 10; 327 else if (ch >= 'a' && ch <= 'f') 328 return ch - 'a' + 10; 329 return -1; 330} 331 332static int 333get_hex (int *start) 334{ 335 int value = convert_hex_digit (*start); 336 int try; 337 338 *start = readchar (timeout); 339 while ((try = convert_hex_digit (*start)) >= 0) 340 { 341 value <<= 4; 342 value += try; 343 *start = readchar (timeout); 344 } 345 return value; 346} 347 348#if 0 349/* Get N 32-bit words from remote, each preceded by a space, and put 350 them in registers starting at REGNO. */ 351 352static void 353get_hex_regs (int n, int regno) 354{ 355 long val; 356 int i; 357 358 for (i = 0; i < n; i++) 359 { 360 int j; 361 362 val = 0; 363 for (j = 0; j < 8; j++) 364 val = (val << 4) + get_hex_digit (j == 0); 365 regcache_raw_supply (current_regcache, regno++, (char *) &val); 366 } 367} 368#endif 369 370/* This is called not only when we first attach, but also when the 371 user types "run" after having attached. */ 372 373static void 374e7000_create_inferior (char *execfile, char *args, char **env, 375 int from_tty) 376{ 377 int entry_pt; 378 379 if (args && *args) 380 error ("Can't pass arguments to remote E7000DEBUG process"); 381 382 if (execfile == 0 || exec_bfd == 0) 383 error ("No executable file specified"); 384 385 entry_pt = (int) bfd_get_start_address (exec_bfd); 386 387#ifdef CREATE_INFERIOR_HOOK 388 CREATE_INFERIOR_HOOK (0); /* No process-ID */ 389#endif 390 391 /* The "process" (board) is already stopped awaiting our commands, and 392 the program is already downloaded. We just set its PC and go. */ 393 394 clear_proceed_status (); 395 396 /* Tell wait_for_inferior that we've started a new process. */ 397 init_wait_for_inferior (); 398 399 /* Set up the "saved terminal modes" of the inferior 400 based on what modes we are starting it with. */ 401 target_terminal_init (); 402 403 /* Install inferior's terminal modes. */ 404 target_terminal_inferior (); 405 406 /* insert_step_breakpoint (); FIXME, do we need this? */ 407 proceed ((CORE_ADDR) entry_pt, -1, 0); /* Let 'er rip... */ 408} 409 410/* Open a connection to a remote debugger. NAME is the filename used 411 for communication. */ 412 413static int baudrate = 9600; 414static char dev_name[100]; 415 416static char *machine = ""; 417static char *user = ""; 418static char *passwd = ""; 419static char *dir = ""; 420 421/* Grab the next token and buy some space for it */ 422 423static char * 424next (char **ptr) 425{ 426 char *p = *ptr; 427 char *s; 428 char *r; 429 int l = 0; 430 431 while (*p && *p == ' ') 432 p++; 433 s = p; 434 while (*p && (*p != ' ' && *p != '\t')) 435 { 436 l++; 437 p++; 438 } 439 r = xmalloc (l + 1); 440 memcpy (r, s, l); 441 r[l] = 0; 442 *ptr = p; 443 return r; 444} 445 446static void 447e7000_login_command (char *args, int from_tty) 448{ 449 if (args) 450 { 451 machine = next (&args); 452 user = next (&args); 453 passwd = next (&args); 454 dir = next (&args); 455 if (from_tty) 456 { 457 printf_unfiltered ("Set info to %s %s %s %s\n", machine, user, passwd, dir); 458 } 459 } 460 else 461 { 462 error ("Syntax is ftplogin <machine> <user> <passwd> <directory>"); 463 } 464} 465 466/* Start an ftp transfer from the E7000 to a host */ 467 468static void 469e7000_ftp_command (char *args, int from_tty) 470{ 471 /* FIXME: arbitrary limit on machine names and such. */ 472 char buf[200]; 473 474 int oldtimeout = timeout; 475 timeout = remote_timeout; 476 477 sprintf (buf, "ftp %s\r", machine); 478 puts_e7000debug (buf); 479 expect (" Username : "); 480 sprintf (buf, "%s\r", user); 481 puts_e7000debug (buf); 482 expect (" Password : "); 483 write_e7000 (passwd); 484 write_e7000 ("\r"); 485 expect ("success\r"); 486 expect ("FTP>"); 487 sprintf (buf, "cd %s\r", dir); 488 puts_e7000debug (buf); 489 expect ("FTP>"); 490 sprintf (buf, "ll 0;s:%s\r", args); 491 puts_e7000debug (buf); 492 expect ("FTP>"); 493 puts_e7000debug ("bye\r"); 494 expect (":"); 495 timeout = oldtimeout; 496} 497 498static int 499e7000_parse_device (char *args, char *dev_name, int baudrate) 500{ 501 char junk[128]; 502 int n = 0; 503 if (args && strcasecmp (args, "pc") == 0) 504 { 505 strcpy (dev_name, args); 506 using_pc = 1; 507 } 508 else 509 { 510 /* FIXME! temp hack to allow use with port master - 511 target tcp_remote <device> */ 512 if (args && strncmp (args, "tcp", 10) == 0) 513 { 514 char com_type[128]; 515 n = sscanf (args, " %s %s %d %s", com_type, dev_name, &baudrate, junk); 516 using_tcp_remote = 1; 517 n--; 518 } 519 else if (args) 520 { 521 n = sscanf (args, " %s %d %s", dev_name, &baudrate, junk); 522 } 523 524 if (n != 1 && n != 2) 525 { 526 error ("Bad arguments. Usage:\ttarget e7000 <device> <speed>\n\ 527or \t\ttarget e7000 <host>[:<port>]\n\ 528or \t\ttarget e7000 tcp_remote <host>[:<port>]\n\ 529or \t\ttarget e7000 pc\n"); 530 } 531 532#if !defined(__GO32__) && !defined(_WIN32) && !defined(__CYGWIN__) 533 /* FIXME! test for ':' is ambiguous */ 534 if (n == 1 && strchr (dev_name, ':') == 0) 535 { 536 /* Default to normal telnet port */ 537 /* serial_open will use this to determine tcp communication */ 538 strcat (dev_name, ":23"); 539 } 540#endif 541 if (!using_tcp_remote && strchr (dev_name, ':')) 542 using_tcp = 1; 543 } 544 545 return n; 546} 547 548/* Stub for catch_errors. */ 549 550static int 551e7000_start_remote (void *dummy) 552{ 553 int loop; 554 int sync; 555 int try; 556 int quit_trying; 557 558 immediate_quit++; /* Allow user to interrupt it */ 559 560 /* Hello? Are you there? */ 561 sync = 0; 562 loop = 0; 563 try = 0; 564 quit_trying = 20; 565 putchar_e7000 (CTRLC); 566 while (!sync && ++try <= quit_trying) 567 { 568 int c; 569 570 printf_unfiltered ("[waiting for e7000...]\n"); 571 572 write_e7000 ("\r"); 573 c = readchar (1); 574 575 /* FIXME! this didn't seem right-> while (c != SERIAL_TIMEOUT) 576 * we get stuck in this loop ... 577 * We may never timeout, and never sync up :-( 578 */ 579 while (!sync && c != -1) 580 { 581 /* Dont echo cr's */ 582 if (c != '\r') 583 { 584 putchar_unfiltered (c); 585 gdb_flush (gdb_stdout); 586 } 587 /* Shouldn't we either break here, or check for sync in inner loop? */ 588 if (c == ':') 589 sync = 1; 590 591 if (loop++ == 20) 592 { 593 putchar_e7000 (CTRLC); 594 loop = 0; 595 } 596 597 QUIT; 598 599 if (quit_flag) 600 { 601 putchar_e7000 (CTRLC); 602 /* Was-> quit_flag = 0; */ 603 c = -1; 604 quit_trying = try + 1; /* we don't want to try anymore */ 605 } 606 else 607 { 608 c = readchar (1); 609 } 610 } 611 } 612 613 if (!sync) 614 { 615 fprintf_unfiltered (gdb_stderr, "Giving up after %d tries...\n", try); 616 error ("Unable to synchronize with target.\n"); 617 } 618 619 puts_e7000debug ("\r"); 620 expect_prompt (); 621 puts_e7000debug ("b -\r"); /* Clear breakpoints */ 622 expect_prompt (); 623 624 immediate_quit--; 625 626/* This is really the job of start_remote however, that makes an assumption 627 that the target is about to print out a status message of some sort. That 628 doesn't happen here. */ 629 630 flush_cached_frames (); 631 registers_changed (); 632 stop_pc = read_pc (); 633 print_stack_frame (get_selected_frame (), 0, SRC_AND_LOC); 634 635 return 1; 636} 637 638static void 639e7000_open (char *args, int from_tty) 640{ 641 int n; 642 643 target_preopen (from_tty); 644 645 n = e7000_parse_device (args, dev_name, baudrate); 646 647 push_target (&e7000_ops); 648 649 e7000_desc = serial_open (dev_name); 650 651 if (!e7000_desc) 652 perror_with_name (dev_name); 653 654 if (serial_setbaudrate (e7000_desc, baudrate)) 655 { 656 serial_close (e7000_desc); 657 perror_with_name (dev_name); 658 } 659 serial_raw (e7000_desc); 660 661 /* Start the remote connection; if error (0), discard this target. 662 In particular, if the user quits, be sure to discard it 663 (we'd be in an inconsistent state otherwise). */ 664 if (!catch_errors (e7000_start_remote, (char *) 0, 665 "Couldn't establish connection to remote target\n", RETURN_MASK_ALL)) 666 if (from_tty) 667 printf_filtered ("Remote target %s connected to %s\n", target_shortname, 668 dev_name); 669} 670 671/* Close out all files and local state before this target loses control. */ 672 673static void 674e7000_close (int quitting) 675{ 676 if (e7000_desc) 677 { 678 serial_close (e7000_desc); 679 e7000_desc = 0; 680 } 681} 682 683/* Terminate the open connection to the remote debugger. Use this 684 when you want to detach and do something else with your gdb. */ 685 686static void 687e7000_detach (char *arg, int from_tty) 688{ 689 pop_target (); /* calls e7000_close to do the real work */ 690 if (from_tty) 691 printf_unfiltered ("Ending remote %s debugging\n", target_shortname); 692} 693 694/* Tell the remote machine to resume. */ 695 696static void 697e7000_resume (ptid_t ptid, int step, enum target_signal sigal) 698{ 699 if (step) 700 puts_e7000debug ("S\r"); 701 else 702 puts_e7000debug ("G\r"); 703} 704 705/* Read the remote registers into the block REGS. 706 707 For the H8/300 a register dump looks like: 708 709 PC=00021A CCR=80:I******* 710 ER0 - ER3 0000000A 0000002E 0000002E 00000000 711 ER4 - ER7 00000000 00000000 00000000 00FFEFF6 712 000218 MOV.B R1L,R2L 713 STEP NORMAL END or 714 BREAK POINT 715 */ 716 717char *want_h8300h = "PC=%p CCR=%c\n\ 718 ER0 - ER3 %0 %1 %2 %3\n\ 719 ER4 - ER7 %4 %5 %6 %7\n"; 720 721char *want_nopc_h8300h = "%p CCR=%c\n\ 722 ER0 - ER3 %0 %1 %2 %3\n\ 723 ER4 - ER7 %4 %5 %6 %7"; 724 725char *want_h8300s = "PC=%p CCR=%c\n\ 726 MACH=\n\ 727 ER0 - ER3 %0 %1 %2 %3\n\ 728 ER4 - ER7 %4 %5 %6 %7\n"; 729 730char *want_nopc_h8300s = "%p CCR=%c EXR=%9\n\ 731 ER0 - ER3 %0 %1 %2 %3\n\ 732 ER4 - ER7 %4 %5 %6 %7"; 733 734char *want_sh = "PC=%16 SR=%22\n\ 735PR=%17 GBR=%18 VBR=%19\n\ 736MACH=%20 MACL=%21\n\ 737R0-7 %0 %1 %2 %3 %4 %5 %6 %7\n\ 738R8-15 %8 %9 %10 %11 %12 %13 %14 %15\n"; 739 740char *want_nopc_sh = "%16 SR=%22\n\ 741 PR=%17 GBR=%18 VBR=%19\n\ 742 MACH=%20 MACL=%21\n\ 743 R0-7 %0 %1 %2 %3 %4 %5 %6 %7\n\ 744 R8-15 %8 %9 %10 %11 %12 %13 %14 %15"; 745 746char *want_sh3 = "PC=%16 SR=%22\n\ 747PR=%17 GBR=%18 VBR=%19\n\ 748MACH=%20 MACL=%21 SSR=%23 SPC=%24\n\ 749R0-7 %0 %1 %2 %3 %4 %5 %6 %7\n\ 750R8-15 %8 %9 %10 %11 %12 %13 %14 %15\n\ 751R0_BANK0-R3_BANK0 %25 %26 %27 %28\n\ 752R4_BANK0-R7_BANK0 %29 %30 %31 %32\n\ 753R0_BANK1-R3_BANK1 %33 %34 %35 %36\n\ 754R4_BANK1-R7_BANK1 %37 %38 %39 %40"; 755 756char *want_nopc_sh3 = "%16 SR=%22\n\ 757 PR=%17 GBR=%18 VBR=%19\n\ 758 MACH=%20 MACL=%21 SSR=%22 SPC=%23\n\ 759 R0-7 %0 %1 %2 %3 %4 %5 %6 %7\n\ 760 R8-15 %8 %9 %10 %11 %12 %13 %14 %15\n\ 761 R0_BANK0-R3_BANK0 %25 %26 %27 %28\n\ 762 R4_BANK0-R7_BANK0 %29 %30 %31 %32\n\ 763 R0_BANK1-R3_BANK1 %33 %34 %35 %36\n\ 764 R4_BANK1-R7_BANK1 %37 %38 %39 %40"; 765 766static int 767gch (void) 768{ 769 return readchar (timeout); 770} 771 772static unsigned int 773gbyte (void) 774{ 775 int high = convert_hex_digit (gch ()); 776 int low = convert_hex_digit (gch ()); 777 778 return (high << 4) + low; 779} 780 781static void 782fetch_regs_from_dump (int (*nextchar) (), char *want) 783{ 784 int regno; 785 char buf[MAX_REGISTER_SIZE]; 786 787 int thischar = nextchar (); 788 789 if (want == NULL) 790 internal_error (__FILE__, __LINE__, "Register set not selected."); 791 792 while (*want) 793 { 794 switch (*want) 795 { 796 case '\n': 797 /* Skip to end of line and then eat all new line type stuff */ 798 while (thischar != '\n' && thischar != '\r') 799 thischar = nextchar (); 800 while (thischar == '\n' || thischar == '\r') 801 thischar = nextchar (); 802 want++; 803 break; 804 805 case ' ': 806 while (thischar == ' ' 807 || thischar == '\t' 808 || thischar == '\r' 809 || thischar == '\n') 810 thischar = nextchar (); 811 want++; 812 break; 813 814 default: 815 if (*want == thischar) 816 { 817 want++; 818 if (*want) 819 thischar = nextchar (); 820 821 } 822 else if (thischar == ' ' || thischar == '\n' || thischar == '\r') 823 { 824 thischar = nextchar (); 825 } 826 else 827 { 828 error ("out of sync in fetch registers wanted <%s>, got <%c 0x%x>", 829 want, thischar, thischar); 830 } 831 832 break; 833 case '%': 834 /* Got a register command */ 835 want++; 836 switch (*want) 837 { 838#ifdef PC_REGNUM 839 case 'p': 840 regno = PC_REGNUM; 841 want++; 842 break; 843#endif 844#ifdef CCR_REGNUM 845 case 'c': 846 regno = CCR_REGNUM; 847 want++; 848 break; 849#endif 850#ifdef SP_REGNUM 851 case 's': 852 regno = SP_REGNUM; 853 want++; 854 break; 855#endif 856#ifdef DEPRECATED_FP_REGNUM 857 case 'f': 858 regno = DEPRECATED_FP_REGNUM; 859 want++; 860 break; 861#endif 862 863 default: 864 if (isdigit (want[0])) 865 { 866 if (isdigit (want[1])) 867 { 868 regno = (want[0] - '0') * 10 + want[1] - '0'; 869 want += 2; 870 } 871 else 872 { 873 regno = want[0] - '0'; 874 want++; 875 } 876 } 877 878 else 879 internal_error (__FILE__, __LINE__, "failed internal consistency check"); 880 } 881 store_signed_integer (buf, 882 register_size (current_gdbarch, regno), 883 (LONGEST) get_hex (&thischar)); 884 regcache_raw_supply (current_regcache, regno, buf); 885 break; 886 } 887 } 888} 889 890static void 891e7000_fetch_registers (void) 892{ 893 int regno; 894 char *wanted = NULL; 895 896 puts_e7000debug ("R\r"); 897 898 if (TARGET_ARCHITECTURE->arch == bfd_arch_sh) 899 { 900 wanted = want_sh; 901 switch (TARGET_ARCHITECTURE->mach) 902 { 903 case bfd_mach_sh3: 904 case bfd_mach_sh3e: 905 case bfd_mach_sh4: 906 wanted = want_sh3; 907 } 908 } 909 if (TARGET_ARCHITECTURE->arch == bfd_arch_h8300) 910 { 911 wanted = want_h8300h; 912 switch (TARGET_ARCHITECTURE->mach) 913 { 914 case bfd_mach_h8300s: 915 case bfd_mach_h8300sn: 916 case bfd_mach_h8300sx: 917 case bfd_mach_h8300sxn: 918 wanted = want_h8300s; 919 } 920 } 921 922 fetch_regs_from_dump (gch, wanted); 923 924 /* And supply the extra ones the simulator uses */ 925 for (regno = NUM_REALREGS; regno < NUM_REGS; regno++) 926 { 927 int buf = 0; 928 929 regcache_raw_supply (current_regcache, regno, (char *) (&buf)); 930 } 931} 932 933/* Fetch register REGNO, or all registers if REGNO is -1. Returns 934 errno value. */ 935 936static void 937e7000_fetch_register (int regno) 938{ 939 e7000_fetch_registers (); 940} 941 942/* Store the remote registers from the contents of the block REGS. */ 943 944static void 945e7000_store_registers (void) 946{ 947 int regno; 948 949 for (regno = 0; regno < NUM_REALREGS; regno++) 950 e7000_store_register (regno); 951 952 registers_changed (); 953} 954 955/* Store register REGNO, or all if REGNO == 0. Return errno value. */ 956 957static void 958e7000_store_register (int regno) 959{ 960 char buf[200]; 961 962 if (regno == -1) 963 { 964 e7000_store_registers (); 965 return; 966 } 967 968 if (TARGET_ARCHITECTURE->arch == bfd_arch_h8300) 969 { 970 if (regno <= 7) 971 { 972 sprintf (buf, ".ER%d %s\r", regno, phex_nz (read_register (regno), 0)); 973 puts_e7000debug (buf); 974 } 975 else if (regno == PC_REGNUM) 976 { 977 sprintf (buf, ".PC %s\r", phex_nz (read_register (regno), 0)); 978 puts_e7000debug (buf); 979 } 980#ifdef CCR_REGNUM 981 else if (regno == CCR_REGNUM) 982 { 983 sprintf (buf, ".CCR %s\r", phex_nz (read_register (regno), 0)); 984 puts_e7000debug (buf); 985 } 986#endif 987 } 988 989 else if (TARGET_ARCHITECTURE->arch == bfd_arch_sh) 990 { 991 if (regno == PC_REGNUM) 992 { 993 sprintf (buf, ".PC %s\r", phex_nz (read_register (regno), 0)); 994 puts_e7000debug (buf); 995 } 996 997 else if (regno == SR_REGNUM) 998 { 999 sprintf (buf, ".SR %s\r", phex_nz (read_register (regno), 0)); 1000 puts_e7000debug (buf); 1001 } 1002 1003 else if (regno == PR_REGNUM) 1004 { 1005 sprintf (buf, ".PR %s\r", phex_nz (read_register (regno), 0)); 1006 puts_e7000debug (buf); 1007 } 1008 1009 else if (regno == GBR_REGNUM) 1010 { 1011 sprintf (buf, ".GBR %s\r", phex_nz (read_register (regno), 0)); 1012 puts_e7000debug (buf); 1013 } 1014 1015 else if (regno == VBR_REGNUM) 1016 { 1017 sprintf (buf, ".VBR %s\r", phex_nz (read_register (regno), 0)); 1018 puts_e7000debug (buf); 1019 } 1020 1021 else if (regno == MACH_REGNUM) 1022 { 1023 sprintf (buf, ".MACH %s\r", phex_nz (read_register (regno), 0)); 1024 puts_e7000debug (buf); 1025 } 1026 1027 else if (regno == MACL_REGNUM) 1028 { 1029 sprintf (buf, ".MACL %s\r", phex_nz (read_register (regno), 0)); 1030 puts_e7000debug (buf); 1031 } 1032 else 1033 { 1034 sprintf (buf, ".R%d %s\r", regno, phex_nz (read_register (regno), 0)); 1035 puts_e7000debug (buf); 1036 } 1037 } 1038 1039 expect_prompt (); 1040} 1041 1042/* Get ready to modify the registers array. On machines which store 1043 individual registers, this doesn't need to do anything. On machines 1044 which store all the registers in one fell swoop, this makes sure 1045 that registers contains all the registers from the program being 1046 debugged. */ 1047 1048static void 1049e7000_prepare_to_store (void) 1050{ 1051 /* Do nothing, since we can store individual regs */ 1052} 1053 1054static void 1055e7000_files_info (struct target_ops *ops) 1056{ 1057 printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name, baudrate); 1058} 1059 1060static int 1061stickbyte (char *where, unsigned int what) 1062{ 1063 static CONST char digs[] = "0123456789ABCDEF"; 1064 1065 where[0] = digs[(what >> 4) & 0xf]; 1066 where[1] = digs[(what & 0xf) & 0xf]; 1067 1068 return what; 1069} 1070 1071/* Write a small ammount of memory. */ 1072 1073static int 1074write_small (CORE_ADDR memaddr, unsigned char *myaddr, int len) 1075{ 1076 int i; 1077 char buf[200]; 1078 1079 for (i = 0; i < len; i++) 1080 { 1081 if (((memaddr + i) & 3) == 0 && (i + 3 < len)) 1082 { 1083 /* Can be done with a long word */ 1084 sprintf (buf, "m %s %x%02x%02x%02x;l\r", 1085 paddr_nz (memaddr + i), 1086 myaddr[i], myaddr[i + 1], myaddr[i + 2], myaddr[i + 3]); 1087 puts_e7000debug (buf); 1088 i += 3; 1089 } 1090 else 1091 { 1092 sprintf (buf, "m %s %x\r", paddr_nz (memaddr + i), myaddr[i]); 1093 puts_e7000debug (buf); 1094 } 1095 } 1096 1097 expect_prompt (); 1098 1099 return len; 1100} 1101 1102/* Write a large ammount of memory, this only works with the serial 1103 mode enabled. Command is sent as 1104 1105 il ;s:s\r -> 1106 <- il ;s:s\r 1107 <- ENQ 1108 ACK -> 1109 <- LO s\r 1110 Srecords... 1111 ^Z -> 1112 <- ENQ 1113 ACK -> 1114 <- : 1115 */ 1116 1117static int 1118write_large (CORE_ADDR memaddr, unsigned char *myaddr, int len) 1119{ 1120 int i; 1121#define maxstride 128 1122 int stride; 1123 1124 puts_e7000debug ("IL ;S:FK\r"); 1125 expect (ENQSTRING); 1126 putchar_e7000 (ACK); 1127 expect ("LO FK\r"); 1128 1129 for (i = 0; i < len; i += stride) 1130 { 1131 char compose[maxstride * 2 + 50]; 1132 int address = i + memaddr; 1133 int j; 1134 int check_sum; 1135 int where = 0; 1136 int alen; 1137 1138 stride = len - i; 1139 if (stride > maxstride) 1140 stride = maxstride; 1141 1142 compose[where++] = 'S'; 1143 check_sum = 0; 1144 if (address >= 0xffffff) 1145 alen = 4; 1146 else if (address >= 0xffff) 1147 alen = 3; 1148 else 1149 alen = 2; 1150 /* Insert type. */ 1151 compose[where++] = alen - 1 + '0'; 1152 /* Insert length. */ 1153 check_sum += stickbyte (compose + where, alen + stride + 1); 1154 where += 2; 1155 while (alen > 0) 1156 { 1157 alen--; 1158 check_sum += stickbyte (compose + where, address >> (8 * (alen))); 1159 where += 2; 1160 } 1161 1162 for (j = 0; j < stride; j++) 1163 { 1164 check_sum += stickbyte (compose + where, myaddr[i + j]); 1165 where += 2; 1166 } 1167 stickbyte (compose + where, ~check_sum); 1168 where += 2; 1169 compose[where++] = '\r'; 1170 compose[where++] = '\n'; 1171 compose[where++] = 0; 1172 1173 serial_write (e7000_desc, compose, where); 1174 j = readchar (0); 1175 if (j == -1) 1176 { 1177 /* This is ok - nothing there */ 1178 } 1179 else if (j == ENQ) 1180 { 1181 /* Hmm, it's trying to tell us something */ 1182 expect (":"); 1183 error ("Error writing memory"); 1184 } 1185 else 1186 { 1187 printf_unfiltered ("@%d}@", j); 1188 while ((j = readchar (0)) > 0) 1189 { 1190 printf_unfiltered ("@{%d}@", j); 1191 } 1192 } 1193 } 1194 1195 /* Send the trailer record */ 1196 write_e7000 ("S70500000000FA\r"); 1197 putchar_e7000 (CTRLZ); 1198 expect (ENQSTRING); 1199 putchar_e7000 (ACK); 1200 expect (":"); 1201 1202 return len; 1203} 1204 1205/* Copy LEN bytes of data from debugger memory at MYADDR to inferior's 1206 memory at MEMADDR. Returns length moved. 1207 1208 Can't use the Srecord load over ethernet, so don't use fast method 1209 then. */ 1210 1211static int 1212e7000_write_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) 1213{ 1214 if (len < 16 || using_tcp || using_pc) 1215 return write_small (memaddr, myaddr, len); 1216 else 1217 return write_large (memaddr, myaddr, len); 1218} 1219 1220/* Read LEN bytes from inferior memory at MEMADDR. Put the result 1221 at debugger address MYADDR. Returns length moved. 1222 1223 Small transactions we send 1224 m <addr>;l 1225 and receive 1226 00000000 12345678 ? 1227 */ 1228 1229static int 1230e7000_read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) 1231{ 1232 int count; 1233 int c; 1234 int i; 1235 char buf[200]; 1236 /* Starting address of this pass. */ 1237 1238/* printf("READ INF %x %x %d\n", memaddr, myaddr, len); */ 1239 if (((memaddr - 1) + len) < memaddr) 1240 { 1241 errno = EIO; 1242 return 0; 1243 } 1244 1245 sprintf (buf, "m %s;l\r", paddr_nz (memaddr)); 1246 puts_e7000debug (buf); 1247 1248 for (count = 0; count < len; count += 4) 1249 { 1250 /* Suck away the address */ 1251 c = gch (); 1252 while (c != ' ') 1253 c = gch (); 1254 c = gch (); 1255 if (c == '*') 1256 { /* Some kind of error */ 1257 puts_e7000debug (".\r"); /* Some errors leave us in memory input mode */ 1258 expect_full_prompt (); 1259 return -1; 1260 } 1261 while (c != ' ') 1262 c = gch (); 1263 1264 /* Now read in the data */ 1265 for (i = 0; i < 4; i++) 1266 { 1267 int b = gbyte (); 1268 if (count + i < len) 1269 { 1270 myaddr[count + i] = b; 1271 } 1272 } 1273 1274 /* Skip the trailing ? and send a . to end and a cr for more */ 1275 gch (); 1276 gch (); 1277 if (count + 4 >= len) 1278 puts_e7000debug (".\r"); 1279 else 1280 puts_e7000debug ("\r"); 1281 1282 } 1283 expect_prompt (); 1284 return len; 1285} 1286 1287 1288 1289/* 1290 For large transfers we used to send 1291 1292 1293 d <addr> <endaddr>\r 1294 1295 and receive 1296 <ADDRESS> < D A T A > < ASCII CODE > 1297 00000000 5F FD FD FF DF 7F DF FF 01 00 01 00 02 00 08 04 "_..............." 1298 00000010 FF D7 FF 7F D7 F1 7F FF 00 05 00 00 08 00 40 00 "..............@." 1299 00000020 7F FD FF F7 7F FF FF F7 00 00 00 00 00 00 00 00 "................" 1300 1301 A cost in chars for each transaction of 80 + 5*n-bytes. 1302 1303 Large transactions could be done with the srecord load code, but 1304 there is a pause for a second before dumping starts, which slows the 1305 average rate down! 1306 */ 1307 1308static int 1309e7000_read_inferior_memory_large (CORE_ADDR memaddr, unsigned char *myaddr, 1310 int len) 1311{ 1312 int count; 1313 int c; 1314 char buf[200]; 1315 1316 /* Starting address of this pass. */ 1317 1318 if (((memaddr - 1) + len) < memaddr) 1319 { 1320 errno = EIO; 1321 return 0; 1322 } 1323 1324 sprintf (buf, "d %s %s\r", paddr_nz (memaddr), paddr_nz (memaddr + len - 1)); 1325 puts_e7000debug (buf); 1326 1327 count = 0; 1328 c = gch (); 1329 1330 /* skip down to the first ">" */ 1331 while (c != '>') 1332 c = gch (); 1333 /* now skip to the end of that line */ 1334 while (c != '\r') 1335 c = gch (); 1336 c = gch (); 1337 1338 while (count < len) 1339 { 1340 /* get rid of any white space before the address */ 1341 while (c <= ' ') 1342 c = gch (); 1343 1344 /* Skip the address */ 1345 get_hex (&c); 1346 1347 /* read in the bytes on the line */ 1348 while (c != '"' && count < len) 1349 { 1350 if (c == ' ') 1351 c = gch (); 1352 else 1353 { 1354 myaddr[count++] = get_hex (&c); 1355 } 1356 } 1357 /* throw out the rest of the line */ 1358 while (c != '\r') 1359 c = gch (); 1360 } 1361 1362 /* wait for the ":" prompt */ 1363 while (c != ':') 1364 c = gch (); 1365 1366 return len; 1367} 1368 1369#if 0 1370 1371static int 1372fast_but_for_the_pause_e7000_read_inferior_memory (CORE_ADDR memaddr, 1373 char *myaddr, int len) 1374{ 1375 int loop; 1376 int c; 1377 char buf[200]; 1378 1379 if (((memaddr - 1) + len) < memaddr) 1380 { 1381 errno = EIO; 1382 return 0; 1383 } 1384 1385 sprintf (buf, "is %x@%x:s\r", memaddr, len); 1386 puts_e7000debug (buf); 1387 gch (); 1388 c = gch (); 1389 if (c != ENQ) 1390 { 1391 /* Got an error */ 1392 error ("Memory read error"); 1393 } 1394 putchar_e7000 (ACK); 1395 expect ("SV s"); 1396 loop = 1; 1397 while (loop) 1398 { 1399 int type; 1400 int length; 1401 int addr; 1402 int i; 1403 1404 c = gch (); 1405 switch (c) 1406 { 1407 case ENQ: /* ENQ, at the end */ 1408 loop = 0; 1409 break; 1410 case 'S': 1411 /* Start of an Srecord */ 1412 type = gch (); 1413 length = gbyte (); 1414 switch (type) 1415 { 1416 case '7': /* Termination record, ignore */ 1417 case '0': 1418 case '8': 1419 case '9': 1420 /* Header record - ignore it */ 1421 while (length--) 1422 { 1423 gbyte (); 1424 } 1425 break; 1426 case '1': 1427 case '2': 1428 case '3': 1429 { 1430 int alen; 1431 1432 alen = type - '0' + 1; 1433 addr = 0; 1434 while (alen--) 1435 { 1436 addr = (addr << 8) + gbyte (); 1437 length--; 1438 } 1439 1440 for (i = 0; i < length - 1; i++) 1441 myaddr[i + addr - memaddr] = gbyte (); 1442 1443 gbyte (); /* Ignore checksum */ 1444 } 1445 } 1446 } 1447 } 1448 1449 putchar_e7000 (ACK); 1450 expect ("TOP ADDRESS ="); 1451 expect ("END ADDRESS ="); 1452 expect (":"); 1453 1454 return len; 1455} 1456 1457#endif 1458 1459/* Transfer LEN bytes between GDB address MYADDR and target address 1460 MEMADDR. If WRITE is non-zero, transfer them to the target, 1461 otherwise transfer them from the target. TARGET is unused. 1462 1463 Returns the number of bytes transferred. */ 1464 1465static int 1466e7000_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len, 1467 int write, struct mem_attrib *attrib, 1468 struct target_ops *target) 1469{ 1470 if (write) 1471 return e7000_write_inferior_memory (memaddr, myaddr, len); 1472 else if (len < 16) 1473 return e7000_read_inferior_memory (memaddr, myaddr, len); 1474 else 1475 return e7000_read_inferior_memory_large (memaddr, myaddr, len); 1476} 1477 1478static void 1479e7000_kill (void) 1480{ 1481} 1482 1483static void 1484e7000_load (char *args, int from_tty) 1485{ 1486 struct cleanup *old_chain; 1487 asection *section; 1488 bfd *pbfd; 1489 bfd_vma entry; 1490#define WRITESIZE 0x1000 1491 char buf[2 + 4 + 4 + WRITESIZE]; /* `DT' + <addr> + <len> + <data> */ 1492 char *filename; 1493 int quiet; 1494 int nostart; 1495 time_t start_time, end_time; /* Start and end times of download */ 1496 unsigned long data_count; /* Number of bytes transferred to memory */ 1497 int oldtimeout = timeout; 1498 1499 timeout = remote_timeout; 1500 1501 1502 /* FIXME! change test to test for type of download */ 1503 if (!using_tcp) 1504 { 1505 generic_load (args, from_tty); 1506 return; 1507 } 1508 1509 /* for direct tcp connections, we can do a fast binary download */ 1510 buf[0] = 'D'; 1511 buf[1] = 'T'; 1512 quiet = 0; 1513 nostart = 0; 1514 filename = NULL; 1515 1516 while (*args != '\000') 1517 { 1518 char *arg; 1519 1520 while (isspace (*args)) 1521 args++; 1522 1523 arg = args; 1524 1525 while ((*args != '\000') && !isspace (*args)) 1526 args++; 1527 1528 if (*args != '\000') 1529 *args++ = '\000'; 1530 1531 if (*arg != '-') 1532 filename = arg; 1533 else if (strncmp (arg, "-quiet", strlen (arg)) == 0) 1534 quiet = 1; 1535 else if (strncmp (arg, "-nostart", strlen (arg)) == 0) 1536 nostart = 1; 1537 else 1538 error ("unknown option `%s'", arg); 1539 } 1540 1541 if (!filename) 1542 filename = get_exec_file (1); 1543 1544 pbfd = bfd_openr (filename, gnutarget); 1545 if (pbfd == NULL) 1546 { 1547 perror_with_name (filename); 1548 return; 1549 } 1550 old_chain = make_cleanup_bfd_close (pbfd); 1551 1552 if (!bfd_check_format (pbfd, bfd_object)) 1553 error ("\"%s\" is not an object file: %s", filename, 1554 bfd_errmsg (bfd_get_error ())); 1555 1556 start_time = time (NULL); 1557 data_count = 0; 1558 1559 puts_e7000debug ("mw\r"); 1560 1561 expect ("\nOK"); 1562 1563 for (section = pbfd->sections; section; section = section->next) 1564 { 1565 if (bfd_get_section_flags (pbfd, section) & SEC_LOAD) 1566 { 1567 bfd_vma section_address; 1568 bfd_size_type section_size; 1569 file_ptr fptr; 1570 1571 section_address = bfd_get_section_vma (pbfd, section); 1572 section_size = bfd_get_section_size (section); 1573 1574 if (!quiet) 1575 printf_filtered ("[Loading section %s at 0x%s (%s bytes)]\n", 1576 bfd_get_section_name (pbfd, section), 1577 paddr_nz (section_address), 1578 paddr_u (section_size)); 1579 1580 fptr = 0; 1581 1582 data_count += section_size; 1583 1584 while (section_size > 0) 1585 { 1586 int count; 1587 static char inds[] = "|/-\\"; 1588 static int k = 0; 1589 1590 QUIT; 1591 1592 count = min (section_size, WRITESIZE); 1593 1594 buf[2] = section_address >> 24; 1595 buf[3] = section_address >> 16; 1596 buf[4] = section_address >> 8; 1597 buf[5] = section_address; 1598 1599 buf[6] = count >> 24; 1600 buf[7] = count >> 16; 1601 buf[8] = count >> 8; 1602 buf[9] = count; 1603 1604 bfd_get_section_contents (pbfd, section, buf + 10, fptr, count); 1605 1606 if (serial_write (e7000_desc, buf, count + 10)) 1607 fprintf_unfiltered (gdb_stderr, 1608 "e7000_load: serial_write failed: %s\n", 1609 safe_strerror (errno)); 1610 1611 expect ("OK"); 1612 1613 if (!quiet) 1614 { 1615 printf_unfiltered ("\r%c", inds[k++ % 4]); 1616 gdb_flush (gdb_stdout); 1617 } 1618 1619 section_address += count; 1620 fptr += count; 1621 section_size -= count; 1622 } 1623 } 1624 } 1625 1626 write_e7000 ("ED"); 1627 1628 expect_prompt (); 1629 1630 end_time = time (NULL); 1631 1632/* Finally, make the PC point at the start address */ 1633 1634 if (exec_bfd) 1635 write_pc (bfd_get_start_address (exec_bfd)); 1636 1637 inferior_ptid = null_ptid; /* No process now */ 1638 1639/* This is necessary because many things were based on the PC at the time that 1640 we attached to the monitor, which is no longer valid now that we have loaded 1641 new code (and just changed the PC). Another way to do this might be to call 1642 normal_stop, except that the stack may not be valid, and things would get 1643 horribly confused... */ 1644 1645 clear_symtab_users (); 1646 1647 if (!nostart) 1648 { 1649 entry = bfd_get_start_address (pbfd); 1650 1651 if (!quiet) 1652 printf_unfiltered ("[Starting %s at 0x%s]\n", filename, paddr_nz (entry)); 1653 1654/* start_routine (entry); */ 1655 } 1656 1657 report_transfer_performance (data_count, start_time, end_time); 1658 1659 do_cleanups (old_chain); 1660 timeout = oldtimeout; 1661} 1662 1663/* Clean up when a program exits. 1664 1665 The program actually lives on in the remote processor's RAM, and may be 1666 run again without a download. Don't leave it full of breakpoint 1667 instructions. */ 1668 1669static void 1670e7000_mourn_inferior (void) 1671{ 1672 remove_breakpoints (); 1673 unpush_target (&e7000_ops); 1674 generic_mourn_inferior (); /* Do all the proper things now */ 1675} 1676 1677#define MAX_BREAKPOINTS 200 1678#ifdef HARD_BREAKPOINTS 1679#define MAX_E7000DEBUG_BREAKPOINTS (BC_BREAKPOINTS ? 5 : MAX_BREAKPOINTS) 1680#else 1681#define MAX_E7000DEBUG_BREAKPOINTS MAX_BREAKPOINTS 1682#endif 1683 1684/* Since we can change to soft breakpoints dynamically, we must define 1685 more than enough. Was breakaddr[MAX_E7000DEBUG_BREAKPOINTS]. */ 1686static CORE_ADDR breakaddr[MAX_BREAKPOINTS] = 1687{0}; 1688 1689static int 1690e7000_insert_breakpoint (CORE_ADDR addr, char *shadow) 1691{ 1692 int i; 1693 char buf[200]; 1694#if 0 1695 static char nop[2] = NOP; 1696#endif 1697 1698 for (i = 0; i <= MAX_E7000DEBUG_BREAKPOINTS; i++) 1699 if (breakaddr[i] == 0) 1700 { 1701 breakaddr[i] = addr; 1702 /* Save old contents, and insert a nop in the space */ 1703#ifdef HARD_BREAKPOINTS 1704 if (BC_BREAKPOINTS) 1705 { 1706 sprintf (buf, "BC%d A=%s\r", i + 1, paddr_nz (addr)); 1707 puts_e7000debug (buf); 1708 } 1709 else 1710 { 1711 sprintf (buf, "B %s\r", paddr_nz (addr)); 1712 puts_e7000debug (buf); 1713 } 1714#else 1715#if 0 1716 e7000_read_inferior_memory (addr, shadow, 2); 1717 e7000_write_inferior_memory (addr, nop, 2); 1718#endif 1719 1720 sprintf (buf, "B %x\r", addr); 1721 puts_e7000debug (buf); 1722#endif 1723 expect_prompt (); 1724 return 0; 1725 } 1726 1727 error ("Too many breakpoints ( > %d) for the E7000\n", 1728 MAX_E7000DEBUG_BREAKPOINTS); 1729 return 1; 1730} 1731 1732static int 1733e7000_remove_breakpoint (CORE_ADDR addr, char *shadow) 1734{ 1735 int i; 1736 char buf[200]; 1737 1738 for (i = 0; i < MAX_E7000DEBUG_BREAKPOINTS; i++) 1739 if (breakaddr[i] == addr) 1740 { 1741 breakaddr[i] = 0; 1742#ifdef HARD_BREAKPOINTS 1743 if (BC_BREAKPOINTS) 1744 { 1745 sprintf (buf, "BC%d - \r", i + 1); 1746 puts_e7000debug (buf); 1747 } 1748 else 1749 { 1750 sprintf (buf, "B - %s\r", paddr_nz (addr)); 1751 puts_e7000debug (buf); 1752 } 1753 expect_prompt (); 1754#else 1755 sprintf (buf, "B - %s\r", paddr_nz (addr)); 1756 puts_e7000debug (buf); 1757 expect_prompt (); 1758 1759#if 0 1760 /* Replace the insn under the break */ 1761 e7000_write_inferior_memory (addr, shadow, 2); 1762#endif 1763#endif 1764 1765 return 0; 1766 } 1767 1768 warning ("Can't find breakpoint associated with 0x%s\n", paddr_nz (addr)); 1769 return 1; 1770} 1771 1772/* Put a command string, in args, out to STDBUG. Output from STDBUG 1773 is placed on the users terminal until the prompt is seen. */ 1774 1775static void 1776e7000_command (char *args, int fromtty) 1777{ 1778 /* FIXME: arbitrary limit on length of args. */ 1779 char buf[200]; 1780 1781 echo = 0; 1782 1783 if (!e7000_desc) 1784 error ("e7000 target not open."); 1785 if (!args) 1786 { 1787 puts_e7000debug ("\r"); 1788 } 1789 else 1790 { 1791 sprintf (buf, "%s\r", args); 1792 puts_e7000debug (buf); 1793 } 1794 1795 echo++; 1796 ctrl_c = 2; 1797 expect_full_prompt (); 1798 echo--; 1799 ctrl_c = 0; 1800 printf_unfiltered ("\n"); 1801 1802 /* Who knows what the command did... */ 1803 registers_changed (); 1804} 1805 1806 1807static void 1808e7000_drain_command (char *args, int fromtty) 1809{ 1810 int c; 1811 1812 puts_e7000debug ("end\r"); 1813 putchar_e7000 (CTRLC); 1814 1815 while ((c = readchar (1)) != -1) 1816 { 1817 if (quit_flag) 1818 { 1819 putchar_e7000 (CTRLC); 1820 quit_flag = 0; 1821 } 1822 if (c > ' ' && c < 127) 1823 printf_unfiltered ("%c", c & 0xff); 1824 else 1825 printf_unfiltered ("<%x>", c & 0xff); 1826 } 1827} 1828 1829#define NITEMS 7 1830 1831static int 1832why_stop (void) 1833{ 1834 static char *strings[NITEMS] = 1835 { 1836 "STEP NORMAL", 1837 "BREAK POINT", 1838 "BREAK KEY", 1839 "BREAK CONDI", 1840 "CYCLE ACCESS", 1841 "ILLEGAL INSTRUCTION", 1842 "WRITE PROTECT", 1843 }; 1844 char *p[NITEMS]; 1845 int c; 1846 int i; 1847 1848 for (i = 0; i < NITEMS; ++i) 1849 p[i] = strings[i]; 1850 1851 c = gch (); 1852 while (1) 1853 { 1854 for (i = 0; i < NITEMS; i++) 1855 { 1856 if (c == *(p[i])) 1857 { 1858 p[i]++; 1859 if (*(p[i]) == 0) 1860 { 1861 /* found one of the choices */ 1862 return i; 1863 } 1864 } 1865 else 1866 p[i] = strings[i]; 1867 } 1868 1869 c = gch (); 1870 } 1871} 1872 1873/* Suck characters, if a string match, then return the strings index 1874 otherwise echo them. */ 1875 1876static int 1877expect_n (char **strings) 1878{ 1879 char *(ptr[10]); 1880 int n; 1881 int c; 1882 char saveaway[100]; 1883 char *buffer = saveaway; 1884 /* Count number of expect strings */ 1885 1886 for (n = 0; strings[n]; n++) 1887 { 1888 ptr[n] = strings[n]; 1889 } 1890 1891 while (1) 1892 { 1893 int i; 1894 int gotone = 0; 1895 1896 c = readchar (1); 1897 if (c == -1) 1898 { 1899 printf_unfiltered ("[waiting for e7000...]\n"); 1900 } 1901#ifdef __GO32__ 1902 if (kbhit ()) 1903 { 1904 int k = getkey (); 1905 1906 if (k == 1) 1907 quit_flag = 1; 1908 } 1909#endif 1910 if (quit_flag) 1911 { 1912 putchar_e7000 (CTRLC); /* interrupt the running program */ 1913 quit_flag = 0; 1914 } 1915 1916 for (i = 0; i < n; i++) 1917 { 1918 if (c == ptr[i][0]) 1919 { 1920 ptr[i]++; 1921 if (ptr[i][0] == 0) 1922 { 1923 /* Gone all the way */ 1924 return i; 1925 } 1926 gotone = 1; 1927 } 1928 else 1929 { 1930 ptr[i] = strings[i]; 1931 } 1932 } 1933 1934 if (gotone) 1935 { 1936 /* Save it up incase we find that there was no match */ 1937 *buffer++ = c; 1938 } 1939 else 1940 { 1941 if (buffer != saveaway) 1942 { 1943 *buffer++ = 0; 1944 printf_unfiltered ("%s", buffer); 1945 buffer = saveaway; 1946 } 1947 if (c != -1) 1948 { 1949 putchar_unfiltered (c); 1950 gdb_flush (gdb_stdout); 1951 } 1952 } 1953 } 1954} 1955 1956/* We subtract two from the pc here rather than use 1957 DECR_PC_AFTER_BREAK since the e7000 doesn't always add two to the 1958 pc, and the simulators never do. */ 1959 1960static void 1961sub2_from_pc (void) 1962{ 1963 char buf[4]; 1964 char buf2[200]; 1965 1966 store_signed_integer (buf, 1967 register_size (current_gdbarch, PC_REGNUM), 1968 read_register (PC_REGNUM) - 2); 1969 regcache_raw_supply (current_regcache, PC_REGNUM, buf); 1970 sprintf (buf2, ".PC %s\r", phex_nz (read_register (PC_REGNUM), 0)); 1971 puts_e7000debug (buf2); 1972} 1973 1974#define WAS_SLEEP 0 1975#define WAS_INT 1 1976#define WAS_RUNNING 2 1977#define WAS_OTHER 3 1978 1979static char *estrings[] = 1980{ 1981 "** SLEEP", 1982 "BREAK !", 1983 "** PC", 1984 "PC", 1985 NULL 1986}; 1987 1988/* Wait until the remote machine stops, then return, storing status in 1989 STATUS just as `wait' would. */ 1990 1991static ptid_t 1992e7000_wait (ptid_t ptid, struct target_waitstatus *status) 1993{ 1994 int stop_reason; 1995 int regno; 1996 int running_count = 0; 1997 int had_sleep = 0; 1998 int loop = 1; 1999 char *wanted_nopc = NULL; 2000 2001 /* Then echo chars until PC= string seen */ 2002 gch (); /* Drop cr */ 2003 gch (); /* and space */ 2004 2005 while (loop) 2006 { 2007 switch (expect_n (estrings)) 2008 { 2009 case WAS_OTHER: 2010 /* how did this happen ? */ 2011 loop = 0; 2012 break; 2013 case WAS_SLEEP: 2014 had_sleep = 1; 2015 putchar_e7000 (CTRLC); 2016 loop = 0; 2017 break; 2018 case WAS_INT: 2019 loop = 0; 2020 break; 2021 case WAS_RUNNING: 2022 running_count++; 2023 if (running_count == 20) 2024 { 2025 printf_unfiltered ("[running...]\n"); 2026 running_count = 0; 2027 } 2028 break; 2029 default: 2030 /* error? */ 2031 break; 2032 } 2033 } 2034 2035 /* Skip till the PC= */ 2036 expect ("="); 2037 2038 if (TARGET_ARCHITECTURE->arch == bfd_arch_sh) 2039 { 2040 wanted_nopc = want_nopc_sh; 2041 switch (TARGET_ARCHITECTURE->mach) 2042 { 2043 case bfd_mach_sh3: 2044 case bfd_mach_sh3e: 2045 case bfd_mach_sh4: 2046 wanted_nopc = want_nopc_sh3; 2047 } 2048 } 2049 if (TARGET_ARCHITECTURE->arch == bfd_arch_h8300) 2050 { 2051 wanted_nopc = want_nopc_h8300h; 2052 switch (TARGET_ARCHITECTURE->mach) 2053 { 2054 case bfd_mach_h8300s: 2055 case bfd_mach_h8300sn: 2056 case bfd_mach_h8300sx: 2057 case bfd_mach_h8300sxn: 2058 wanted_nopc = want_nopc_h8300s; 2059 } 2060 } 2061 fetch_regs_from_dump (gch, wanted_nopc); 2062 2063 /* And supply the extra ones the simulator uses */ 2064 for (regno = NUM_REALREGS; regno < NUM_REGS; regno++) 2065 { 2066 int buf = 0; 2067 regcache_raw_supply (current_regcache, regno, (char *) &buf); 2068 } 2069 2070 stop_reason = why_stop (); 2071 expect_full_prompt (); 2072 2073 status->kind = TARGET_WAITKIND_STOPPED; 2074 status->value.sig = TARGET_SIGNAL_TRAP; 2075 2076 switch (stop_reason) 2077 { 2078 case 1: /* Breakpoint */ 2079 write_pc (read_pc ()); /* PC is always off by 2 for breakpoints */ 2080 status->value.sig = TARGET_SIGNAL_TRAP; 2081 break; 2082 case 0: /* Single step */ 2083 status->value.sig = TARGET_SIGNAL_TRAP; 2084 break; 2085 case 2: /* Interrupt */ 2086 if (had_sleep) 2087 { 2088 status->value.sig = TARGET_SIGNAL_TRAP; 2089 sub2_from_pc (); 2090 } 2091 else 2092 { 2093 status->value.sig = TARGET_SIGNAL_INT; 2094 } 2095 break; 2096 case 3: 2097 break; 2098 case 4: 2099 printf_unfiltered ("a cycle address error?\n"); 2100 status->value.sig = TARGET_SIGNAL_UNKNOWN; 2101 break; 2102 case 5: 2103 status->value.sig = TARGET_SIGNAL_ILL; 2104 break; 2105 case 6: 2106 status->value.sig = TARGET_SIGNAL_SEGV; 2107 break; 2108 case 7: /* Anything else (NITEMS + 1) */ 2109 printf_unfiltered ("a write protect error?\n"); 2110 status->value.sig = TARGET_SIGNAL_UNKNOWN; 2111 break; 2112 default: 2113 /* Get the user's attention - this should never happen. */ 2114 internal_error (__FILE__, __LINE__, "failed internal consistency check"); 2115 } 2116 2117 return inferior_ptid; 2118} 2119 2120/* Stop the running program. */ 2121 2122static void 2123e7000_stop (void) 2124{ 2125 /* Sending a ^C is supposed to stop the running program. */ 2126 putchar_e7000 (CTRLC); 2127} 2128 2129/* Define the target subroutine names. */ 2130 2131struct target_ops e7000_ops; 2132 2133static void 2134init_e7000_ops (void) 2135{ 2136 e7000_ops.to_shortname = "e7000"; 2137 e7000_ops.to_longname = "Remote Renesas e7000 target"; 2138 e7000_ops.to_doc = "Use a remote Renesas e7000 ICE connected by a serial line;\n\ 2139or a network connection.\n\ 2140Arguments are the name of the device for the serial line,\n\ 2141the speed to connect at in bits per second.\n\ 2142eg\n\ 2143target e7000 /dev/ttya 9600\n\ 2144target e7000 foobar"; 2145 e7000_ops.to_open = e7000_open; 2146 e7000_ops.to_close = e7000_close; 2147 e7000_ops.to_detach = e7000_detach; 2148 e7000_ops.to_resume = e7000_resume; 2149 e7000_ops.to_wait = e7000_wait; 2150 e7000_ops.to_fetch_registers = e7000_fetch_register; 2151 e7000_ops.to_store_registers = e7000_store_register; 2152 e7000_ops.to_prepare_to_store = e7000_prepare_to_store; 2153 e7000_ops.deprecated_xfer_memory = e7000_xfer_inferior_memory; 2154 e7000_ops.to_files_info = e7000_files_info; 2155 e7000_ops.to_insert_breakpoint = e7000_insert_breakpoint; 2156 e7000_ops.to_remove_breakpoint = e7000_remove_breakpoint; 2157 e7000_ops.to_kill = e7000_kill; 2158 e7000_ops.to_load = e7000_load; 2159 e7000_ops.to_create_inferior = e7000_create_inferior; 2160 e7000_ops.to_mourn_inferior = e7000_mourn_inferior; 2161 e7000_ops.to_stop = e7000_stop; 2162 e7000_ops.to_stratum = process_stratum; 2163 e7000_ops.to_has_all_memory = 1; 2164 e7000_ops.to_has_memory = 1; 2165 e7000_ops.to_has_stack = 1; 2166 e7000_ops.to_has_registers = 1; 2167 e7000_ops.to_has_execution = 1; 2168 e7000_ops.to_magic = OPS_MAGIC; 2169}; 2170 2171extern initialize_file_ftype _initialize_remote_e7000; /* -Wmissing-prototypes */ 2172 2173void 2174_initialize_remote_e7000 (void) 2175{ 2176 init_e7000_ops (); 2177 add_target (&e7000_ops); 2178 2179 add_com ("e7000", class_obscure, e7000_command, 2180 "Send a command to the e7000 monitor."); 2181 2182 add_com ("ftplogin", class_obscure, e7000_login_command, 2183 "Login to machine and change to directory."); 2184 2185 add_com ("ftpload", class_obscure, e7000_ftp_command, 2186 "Fetch and load a file from previously described place."); 2187 2188 add_com ("drain", class_obscure, e7000_drain_command, 2189 "Drain pending e7000 text buffers."); 2190 2191 deprecated_add_show_from_set 2192 (add_set_cmd ("usehardbreakpoints", no_class, 2193 var_integer, (char *) &use_hard_breakpoints, "\ 2194Set use of hardware breakpoints for all breakpoints.\n", &setlist), 2195 &showlist); 2196} 2197