gdb/v850ice.c

   1 /* ICE interface for the NEC V850 for GDB, the GNU debugger.
   2    Copyright 1996, 1997, 1998, 1999, 2000, 2001
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "gdb_string.h"
  24 #include "frame.h"
  25 #include "symtab.h"
  26 #include "inferior.h"
  27 #include "breakpoint.h"
  28 #include "symfile.h"
  29 #include "target.h"
  30 #include "objfiles.h"
  31 #include "gdbcore.h"
  32 #include "value.h"
  33 #include "command.h"
  34 #include "regcache.h"
  35
  36 #include <tcl.h>
  37 #include <windows.h>
  38 #include <winuser.h>            /* for WM_USER */
  39
  40 extern unsigned long int strtoul (const char *nptr, char **endptr,
  41                                   int base);
  42
  43 /* Local data definitions */
  44 struct MessageIO
  45   {
  46     int size;                   /* length of input or output in bytes         */
  47     char *buf;                  /* buffer having the input/output information */
  48   };
  49
  50 /* Prototypes for functions located in other files */
  51 extern void break_command (char *, int);
  52
  53 extern int (*ui_loop_hook) (int);
  54
  55 /* Prototypes for local functions */
  56 static int init_hidden_window (void);
  57
  58 static LRESULT CALLBACK v850ice_wndproc (HWND, UINT, WPARAM, LPARAM);
  59
  60 static void v850ice_files_info (struct target_ops *ignore);
  61
  62 static int v850ice_xfer_memory (CORE_ADDR memaddr, char *myaddr,
  63                                 int len, int should_write,
  64                                 struct target_ops *target);
  65
  66 static void v850ice_prepare_to_store (void);
  67
  68 static void v850ice_fetch_registers (int regno);
  69
  70 static void v850ice_resume (ptid_t ptid, int step,
  71                             enum target_signal siggnal);
  72
  73 static void v850ice_open (char *name, int from_tty);
  74
  75 static void v850ice_close (int quitting);
  76
  77 static void v850ice_stop (void);
  78
  79 static void v850ice_store_registers (int regno);
  80
  81 static void v850ice_mourn (void);
  82
  83 static ptid_t v850ice_wait (ptid_t ptid,
  84                                   struct target_waitstatus *status);
  85
  86 static void v850ice_kill (void);
  87
  88 static void v850ice_detach (char *args, int from_tty);
  89
  90 static int v850ice_insert_breakpoint (CORE_ADDR, char *);
  91
  92 static int v850ice_remove_breakpoint (CORE_ADDR, char *);
  93
  94 static void v850ice_command (char *, int);
  95
  96 static int ice_disassemble (unsigned long, int, char *);
  97
  98 static int ice_lookup_addr (unsigned long *, char *, char *);
  99
 100 static int ice_lookup_symbol (unsigned long, char *);
 101
 102 static void ice_SimulateDisassemble (char *, int);
 103
 104 static void ice_SimulateAddrLookup (char *, int);
 105
 106 static void ice_Simulate_SymLookup (char *, int);
 107
 108 static void ice_fputs (const char *, struct ui_file *);
 109
 110 static int ice_file (char *);
 111
 112 static int ice_cont (char *);
 113
 114 static int ice_stepi (char *);
 115
 116 static int ice_nexti (char *);
 117
 118 static void togdb_force_update (void);
 119
 120 static void view_source (CORE_ADDR);
 121
 122 static void do_gdb (char *, char *, void (*func) (char *, int), int);
 123
 124
 125 /* Globals */
 126 static HWND hidden_hwnd;        /* HWND for messages */
 127
 128 long (__stdcall * ExeAppReq) (char *, long, char *, struct MessageIO *);
 129
 130 long (__stdcall * RegisterClient) (HWND);
 131
 132 long (__stdcall * UnregisterClient) (void);
 133
 134 extern Tcl_Interp *gdbtk_interp;
 135
 136 /* Globals local to this file only */
 137 static int ice_open = 0;        /* Is ICE open? */
 138
 139 static char *v850_CB_Result;    /* special char array for saving 'callback' results */
 140
 141 static int SimulateCallback;    /* simulate a callback event */
 142
 143 #define MAX_BLOCK_SIZE    64*1024       /* Cannot transfer memory in blocks bigger
 144                                            than this */
 145 /* MDI/ICE Message IDs */
 146 #define GSINGLESTEP     0x200   /* single-step target          */
 147 #define GRESUME         0x201   /* resume target               */
 148 #define GREADREG        0x202   /* read a register             */
 149 #define GWRITEREG       0x203   /* write a register            */
 150 #define GWRITEBLOCK     0x204   /* write a block of memory     */
 151 #define GREADBLOCK      0x205   /* read a block of memory      */
 152 #define GSETBREAK       0x206   /* set a breakpoint            */
 153 #define GREMOVEBREAK    0x207   /* remove a breakpoint         */
 154 #define GHALT           0x208   /* ??? */
 155 #define GCHECKSTATUS    0x209   /* check status of ICE         */
 156 #define GMDIREPLY       0x210   /* Reply for previous query - NOT USED */
 157 #define GDOWNLOAD       0x211   /* something for MDI           */
 158 #define GCOMMAND        0x212   /* execute command in ice      */
 159 #define GLOADFILENAME   0x213   /* retrieve load filename      */
 160 #define GWRITEMEM       0x214   /* write word, half-word, or byte */
 161
 162 /* GCHECKSTATUS return codes: */
 163 #define ICE_Idle        0x00
 164 #define ICE_Breakpoint  0x01    /* hit a breakpoint */
 165 #define ICE_Stepped     0x02    /* have stepped     */
 166 #define ICE_Exception   0x03    /* have exception   */
 167 #define ICE_Halted      0x04    /* hit a user halt  */
 168 #define ICE_Exited      0x05    /* called exit      */
 169 #define ICE_Terminated  0x06    /* user terminated  */
 170 #define ICE_Running     0x07
 171 #define ICE_Unknown     0x99
 172
 173 /* Windows messages */
 174 #define WM_STATE_CHANGE WM_USER+101
 175 #define WM_SYM_TO_ADDR  WM_USER+102
 176 #define WM_ADDR_TO_SYM  WM_USER+103
 177 #define WM_DISASSEMBLY  WM_USER+104
 178 #define WM_SOURCE       WM_USER+105
 179
 180 /* STATE_CHANGE codes */
 181 #define STATE_CHANGE_REGS   1   /* Register(s) changed */
 182 #define STATE_CHANGE_LOAD   2   /* HW reset            */
 183 #define STATE_CHANGE_RESET  3   /* Load new file       */
 184 #define STATE_CHANGE_CONT   4   /* Run target          */
 185 #define STATE_CHANGE_STOP   5   /* Stop target         */
 186 #define STATE_CHANGE_STEPI  6   /* Stepi target        */
 187 #define STATE_CHANGE_NEXTI  7   /* Nexti target        */
 188
 189 static struct target_ops v850ice_ops;   /* Forward decl */
 190
 191 /* This function creates a hidden window */
 192 static int
 193 init_hidden_window (void)
 194 {
 195   WNDCLASS class;
 196
 197   if (hidden_hwnd != NULL)
 198     return 1;
 199
 200   class.style = 0;
 201   class.cbClsExtra = 0;
 202   class.cbWndExtra = 0;
 203   class.hInstance = GetModuleHandle (0);
 204   class.hbrBackground = NULL;
 205   class.lpszMenuName = NULL;
 206   class.lpszClassName = "gdb_v850ice";
 207   class.lpfnWndProc = v850ice_wndproc;
 208   class.hIcon = NULL;
 209   class.hCursor = NULL;
 210
 211   if (!RegisterClass (&class))
 212     return 0;
 213
 214   hidden_hwnd = CreateWindow ("gdb_v850ice", "gdb_v850ice", WS_TILED,
 215                               0, 0, 0, 0, NULL, NULL, class.hInstance,
 216                               NULL);
 217   if (hidden_hwnd == NULL)
 218     {
 219       char buf[200];
 220       DWORD err;
 221
 222       err = GetLastError ();
 223       FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,
 224                      0, buf, 200, NULL);
 225       printf_unfiltered ("Could not create window: %s", buf);
 226       return 0;
 227     }
 228
 229   return 1;
 230 }
 231
 232 /*
 233    This function is installed as the message handler for the hidden window
 234    which QBox will use to communicate with gdb. It recognize and acts
 235    on the following messages:
 236
 237    WM_SYM_TO_ADDR  \
 238    WM_ADDR_TO_SYM   | Not implemented at NEC's request
 239    WM_DISASSEMBLY  /
 240    WM_STATE_CHANGE - tells us that a state change has occured in the ICE
 241  */
 242 static LRESULT CALLBACK
 243 v850ice_wndproc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 244 {
 245   LRESULT result = FALSE;
 246
 247   switch (message)
 248     {
 249     case WM_SYM_TO_ADDR:
 250       MessageBox (0, "Symbol resolution\nNot implemented", "GDB", MB_OK);
 251       break;
 252     case WM_ADDR_TO_SYM:
 253       MessageBox (0, "Address resolution\nNot implemented", "GDB", MB_OK);
 254       break;
 255     case WM_SOURCE:
 256       view_source ((CORE_ADDR) lParam);
 257       break;
 258     case WM_STATE_CHANGE:
 259       switch (wParam)
 260         {
 261         case STATE_CHANGE_LOAD:
 262           {
 263             struct MessageIO iob;
 264             char buf[128];
 265
 266             iob.buf = buf;
 267             iob.size = 128;
 268
 269             /* Load in a new file... Need filename */
 270             ExeAppReq ("GDB", GLOADFILENAME, NULL, &iob);
 271             if (!catch_errors ((catch_errors_ftype *) ice_file, iob.buf, "", RETURN_MASK_ALL))
 272               printf_unfiltered ("load errored\n");
 273           }
 274           break;
 275         case STATE_CHANGE_RESET:
 276           registers_changed ();
 277           flush_cached_frames ();
 278           togdb_force_update ();
 279           result = TRUE;
 280           break;
 281         case STATE_CHANGE_REGS:
 282           registers_changed ();
 283           togdb_force_update ();
 284           result = TRUE;
 285           break;
 286         case STATE_CHANGE_CONT:
 287           if (!catch_errors ((catch_errors_ftype *) ice_cont, NULL, "", RETURN_MASK_ALL))
 288             printf_unfiltered ("continue errored\n");
 289           result = TRUE;
 290           break;
 291         case STATE_CHANGE_STEPI:
 292           if (!catch_errors ((catch_errors_ftype *) ice_stepi, (PTR) (int) lParam, "",
 293                              RETURN_MASK_ALL))
 294             printf_unfiltered ("stepi errored\n");
 295           result = TRUE;
 296           break;
 297         case STATE_CHANGE_NEXTI:
 298           if (!catch_errors ((catch_errors_ftype *) ice_nexti, (PTR) (int) lParam, "",
 299                              RETURN_MASK_ALL))
 300             printf_unfiltered ("nexti errored\n");
 301           result = TRUE;
 302           break;
 303         }
 304     }
 305
 306   if (result == FALSE)
 307     return DefWindowProc (hwnd, message, wParam, lParam);
 308
 309   return FALSE;
 310 }
 311
 312 /* Code for opening a connection to the ICE.  */
 313
 314 static void
 315 v850ice_open (char *name, int from_tty)
 316 {
 317   HINSTANCE handle;
 318
 319   if (name)
 320     error ("Too many arguments.");
 321
 322   target_preopen (from_tty);
 323
 324   unpush_target (&v850ice_ops);
 325
 326   if (from_tty)
 327     puts_filtered ("V850ice debugging\n");
 328
 329   push_target (&v850ice_ops);   /* Switch to using v850ice target now */
 330
 331   target_terminal_init ();
 332
 333   /* Initialize everything necessary to facilitate communication
 334      between QBox, gdb, and the DLLs which control the ICE */
 335   if (ExeAppReq == NULL)
 336     {
 337       handle = LoadLibrary ("necmsg.dll");
 338       if (handle == NULL)
 339         error ("Cannot load necmsg.dll");
 340
 341       ExeAppReq = (long (*) (char *, long, char *, struct MessageIO *))
 342         GetProcAddress (handle, "ExeAppReq");
 343       RegisterClient = (long (*) (HWND))
 344         GetProcAddress (handle, "RegisterClient");
 345       UnregisterClient = (long (*) (void))
 346         GetProcAddress (handle, "UnregisterClient");
 347
 348       if (ExeAppReq == NULL || RegisterClient == NULL || UnregisterClient == NULL)
 349         error ("Could not find requisite functions in necmsg.dll.");
 350
 351       if (!init_hidden_window ())
 352         error ("could not initialize message handling");
 353     }
 354
 355   /* Tell the DLL we are here */
 356   RegisterClient (hidden_hwnd);
 357
 358   ice_open = 1;
 359
 360   /* Without this, some commands which require an active target (such as kill)
 361      won't work.  This variable serves (at least) double duty as both the pid
 362      of the target process (if it has such), and as a flag indicating that a
 363      target is active.  These functions should be split out into seperate
 364      variables, especially since GDB will someday have a notion of debugging
 365      several processes.  */
 366   inferior_ptid = pid_to_ptid (42000);
 367
 368   start_remote ();
 369   return;
 370 }
 371
 372 /* Clean up connection to a remote debugger.  */
 373
 374 /* ARGSUSED */
 375 static void
 376 v850ice_close (int quitting)
 377 {
 378   if (ice_open)
 379     {
 380       UnregisterClient ();
 381       ice_open = 0;
 382       inferior_ptid = null_ptid;
 383     }
 384 }
 385
 386 /* Stop the process on the ice. */
 387 static void
 388 v850ice_stop (void)
 389 {
 390   /* This is silly, but it works... */
 391   v850ice_command ("stop", 0);
 392 }
 393
 394 static void
 395 v850ice_detach (char *args, int from_tty)
 396 {
 397   if (args)
 398     error ("Argument given to \"detach\" when remotely debugging.");
 399
 400   pop_target ();
 401   if (from_tty)
 402     puts_filtered ("Ending v850ice debugging.\n");
 403 }
 404
 405 /* Tell the remote machine to resume.  */
 406
 407 static void
 408 v850ice_resume (ptid_t ptid, int step, enum target_signal siggnal)
 409 {
 410   long retval;
 411   char buf[256];
 412   struct MessageIO iob;
 413
 414   iob.size = 0;
 415   iob.buf = buf;
 416
 417   if (step)
 418     retval = ExeAppReq ("GDB", GSINGLESTEP, "step", &iob);
 419   else
 420     retval = ExeAppReq ("GDB", GRESUME, "run", &iob);
 421
 422   if (retval)
 423     error ("ExeAppReq (step = %d) returned %d", step, retval);
 424 }
 425
 426 /* Wait until the remote machine stops, then return,
 427    storing status in STATUS just as `wait' would.
 428    Returns "pid" (though it's not clear what, if anything, that
 429    means in the case of this target).  */
 430
 431 static ptid_t
 432 v850ice_wait (ptid_t ptid, struct target_waitstatus *status)
 433 {
 434   long v850_status;
 435   char buf[256];
 436   struct MessageIO iob;
 437   int done = 0;
 438   int count = 0;
 439
 440   iob.size = 0;
 441   iob.buf = buf;
 442
 443   do
 444     {
 445       if (count++ % 100000)
 446         {
 447           ui_loop_hook (0);
 448           count = 0;
 449         }
 450
 451       v850_status = ExeAppReq ("GDB", GCHECKSTATUS, NULL, &iob);
 452
 453       switch (v850_status)
 454         {
 455         case ICE_Idle:
 456         case ICE_Breakpoint:
 457         case ICE_Stepped:
 458         case ICE_Halted:
 459           status->kind = TARGET_WAITKIND_STOPPED;
 460           status->value.sig = TARGET_SIGNAL_TRAP;
 461           done = 1;
 462           break;
 463         case ICE_Exception:
 464           status->kind = TARGET_WAITKIND_SIGNALLED;
 465           status->value.sig = TARGET_SIGNAL_SEGV;
 466           done = 1;
 467           break;
 468         case ICE_Exited:
 469           status->kind = TARGET_WAITKIND_EXITED;
 470           status->value.integer = 0;
 471           done = 1;
 472           break;
 473         case ICE_Terminated:
 474           status->kind = TARGET_WAITKIND_SIGNALLED;
 475           status->value.sig = TARGET_SIGNAL_KILL;
 476           done = 1;
 477           break;
 478         default:
 479           break;
 480         }
 481     }
 482   while (!done);
 483
 484   return inferior_ptid;
 485 }
 486
 487 static int
 488 convert_register (int regno, char *buf)
 489 {
 490   if (regno <= 31)
 491     sprintf (buf, "r%d", regno);
 492   else if (REGISTER_NAME (regno)[0] == 's'
 493            && REGISTER_NAME (regno)[1] == 'r')
 494     return 0;
 495   else
 496     sprintf (buf, "%s", REGISTER_NAME (regno));
 497
 498   return 1;
 499 }
 500
 501 /* Read the remote registers into the block REGS.  */
 502 /* Note that the ICE returns register contents as ascii hex strings.  We have
 503    to convert that to an unsigned long, and then call store_unsigned_integer to
 504    convert it to target byte-order if necessary.  */
 505
 506 static void
 507 v850ice_fetch_registers (int regno)
 508 {
 509   long retval;
 510   char cmd[100];
 511   char val[100];
 512   struct MessageIO iob;
 513   unsigned long regval;
 514   char *p;
 515
 516   if (regno == -1)
 517     {
 518       for (regno = 0; regno < NUM_REGS; regno++)
 519         v850ice_fetch_registers (regno);
 520       return;
 521     }
 522
 523   strcpy (cmd, "reg ");
 524   if (!convert_register (regno, &cmd[4]))
 525     return;
 526
 527   iob.size = sizeof val;
 528   iob.buf = val;
 529   retval = ExeAppReq ("GDB", GREADREG, cmd, &iob);
 530   if (retval)
 531     error ("1: ExeAppReq returned %d: cmd = %s", retval, cmd);
 532
 533   regval = strtoul (val, NULL, 16);
 534   if (regval == 0 && p == val)
 535     error ("v850ice_fetch_registers (%d):  bad value from ICE: %s.",
 536            regno, val);
 537
 538   store_unsigned_integer (val, REGISTER_RAW_SIZE (regno), regval);
 539   supply_register (regno, val);
 540 }
 541
 542 /* Store register REGNO, or all registers if REGNO == -1, from the contents
 543    of REGISTERS.  */
 544
 545 static void
 546 v850ice_store_registers (int regno)
 547 {
 548   long retval;
 549   char cmd[100];
 550   unsigned long regval;
 551   char buf[256];
 552   struct MessageIO iob;
 553   iob.size = 0;
 554   iob.buf = buf;
 555
 556   if (regno == -1)
 557     {
 558       for (regno = 0; regno < NUM_REGS; regno++)
 559         v850ice_store_registers (regno);
 560       return;
 561     }
 562
 563   regval = extract_unsigned_integer (&deprecated_registers[REGISTER_BYTE (regno)],
 564                                      REGISTER_RAW_SIZE (regno));
 565   strcpy (cmd, "reg ");
 566   if (!convert_register (regno, &cmd[4]))
 567     return;
 568   sprintf (cmd + strlen (cmd), "=0x%x", regval);
 569
 570   retval = ExeAppReq ("GDB", GWRITEREG, cmd, &iob);
 571   if (retval)
 572     error ("2: ExeAppReq returned %d: cmd = %s", retval, cmd);
 573 }
 574
 575 /* Prepare to store registers.  Nothing to do here, since the ICE can write one
 576    register at a time.  */
 577
 578 static void
 579 v850ice_prepare_to_store (void)
 580 {
 581 }
 582
 583 /* Read or write LEN bytes from inferior memory at MEMADDR, transferring
 584    to or from debugger address MYADDR.  Write to inferior if SHOULD_WRITE is
 585    nonzero.  TARGET is unused.  Returns length of data written or read;
 586    0 for error.
 587
 588    We can only read/write MAX_BLOCK_SIZE bytes at a time, though, or the DLL
 589    dies.  */
 590 /* ARGSUSED */
 591 static int
 592 v850ice_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
 593                      int should_write, struct target_ops *target)
 594 {
 595   long retval;
 596   char cmd[100];
 597   struct MessageIO iob;
 598   int sent;
 599
 600   if (should_write)
 601     {
 602       if (len == 4 || len == 2 || len == 1)
 603         {
 604           long value = 0;
 605           char buf[256];
 606           char c;
 607
 608           iob.size = 0;
 609           iob.buf = buf;
 610
 611           sent = 0;
 612           switch (len)
 613             {
 614             case 4:
 615               c = 'w';
 616               value |= (long) ((myaddr[3] << 24) & 0xff000000);
 617               value |= (long) ((myaddr[2] << 16) & 0x00ff0000);
 618               value |= (long) ((myaddr[1] << 8) & 0x0000ff00);
 619               value |= (long) (myaddr[0] & 0x000000ff);
 620               break;
 621             case 2:
 622               c = 'h';
 623               value |= (long) ((myaddr[1] << 8) & 0xff00);
 624               value |= (long) (myaddr[0] & 0x00ff);
 625               break;
 626             case 1:
 627               c = 'b';
 628               value |= (long) (myaddr[0] & 0xff);
 629               break;
 630             }
 631
 632           sprintf (cmd, "memory %c c 0x%x=0x%x", c, (int) memaddr, value);
 633           retval = ExeAppReq ("GDB", GWRITEMEM, cmd, &iob);
 634           if (retval == 0)
 635             sent = len;
 636         }
 637       else
 638         {
 639           sent = 0;
 640           do
 641             {
 642               iob.size = len > MAX_BLOCK_SIZE ? MAX_BLOCK_SIZE : len;
 643               iob.buf = myaddr;
 644               sprintf (cmd, "memory b c 0x%x=0x00 l=%d", (int) memaddr, iob.size);
 645               retval = ExeAppReq ("GDB", GWRITEBLOCK, cmd, &iob);
 646               if (retval != 0)
 647                 break;
 648               len -= iob.size;
 649               memaddr += iob.size;
 650               myaddr += iob.size;
 651               sent += iob.size;
 652             }
 653           while (len > 0);
 654         }
 655     }
 656   else
 657     {
 658       unsigned char *tmp;
 659       unsigned char *t;
 660       int i;
 661
 662       tmp = alloca (len + 100);
 663       t = tmp;
 664       memset (tmp + len, 0xff, 100);
 665
 666       sent = 0;
 667       do
 668         {
 669           iob.size = len > MAX_BLOCK_SIZE ? MAX_BLOCK_SIZE : len;
 670           iob.buf = tmp;
 671           sprintf (cmd, "memory b 0x%x l=%d", (int) memaddr, iob.size);
 672           retval = ExeAppReq ("GDB", GREADBLOCK, cmd, &iob);
 673           if (retval != 0)
 674             break;
 675           len -= iob.size;
 676           memaddr += iob.size;
 677           sent += iob.size;
 678           tmp += iob.size;
 679         }
 680       while (len > 0);
 681
 682       if (retval == 0)
 683         {
 684           for (i = 0; i < 100; i++)
 685             {
 686               if (t[sent + i] != 0xff)
 687                 {
 688                   warning ("GREADBLOCK trashed bytes after transfer area.");
 689                   break;
 690                 }
 691             }
 692           memcpy (myaddr, t, sent);
 693         }
 694     }
 695
 696   if (retval != 0)
 697     error ("3: ExeAppReq returned %d: cmd = %s", retval, cmd);
 698
 699   return sent;
 700 }
 701
 702 static void
 703 v850ice_files_info (struct target_ops *ignore)
 704 {
 705   puts_filtered ("Debugging a target via the NEC V850 ICE.\n");
 706 }
 707
 708 static int
 709 v850ice_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
 710 {
 711   long retval;
 712   char cmd[100];
 713   char buf[256];
 714   struct MessageIO iob;
 715
 716   iob.size = 0;
 717   iob.buf = buf;
 718   sprintf (cmd, "%d, ", addr);
 719
 720   retval = ExeAppReq ("GDB", GSETBREAK, cmd, &iob);
 721   if (retval)
 722     error ("ExeAppReq (GSETBREAK) returned %d: cmd = %s", retval, cmd);
 723
 724   return 0;
 725 }
 726
 727 static int
 728 v850ice_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
 729 {
 730   long retval;
 731   char cmd[100];
 732   char buf[256];
 733   struct MessageIO iob;
 734
 735   iob.size = 0;
 736   iob.buf = buf;
 737
 738   sprintf (cmd, "%d, ", addr);
 739
 740   retval = ExeAppReq ("GDB", GREMOVEBREAK, cmd, &iob);
 741   if (retval)
 742     error ("ExeAppReq (GREMOVEBREAK) returned %d: cmd = %s", retval, cmd);
 743
 744   return 0;
 745 }
 746
 747 static void
 748 v850ice_kill (void)
 749 {
 750   target_mourn_inferior ();
 751   inferior_ptid = null_ptid;
 752 }
 753
 754 static void
 755 v850ice_mourn (void)
 756 {
 757 }
 758
 759 static void
 760 v850ice_load (char *filename, int from_tty)
 761 {
 762   struct MessageIO iob;
 763   char buf[256];
 764
 765   iob.size = 0;
 766   iob.buf = buf;
 767   generic_load (filename, from_tty);
 768   ExeAppReq ("GDB", GDOWNLOAD, filename, &iob);
 769 }
 770
 771 static int
 772 ice_file (char *arg)
 773 {
 774   char *s;
 775
 776   target_detach (NULL, 0);
 777   pop_target ();
 778
 779   printf_unfiltered ("\n");
 780
 781   s = arg;
 782   while (*s != '\0')
 783     {
 784       if (*s == '\\')
 785         *s = '/';
 786       s++;
 787     }
 788
 789   /* Safegaurd against confusing the breakpoint routines... */
 790   delete_command (NULL, 0);
 791
 792   /* Must supress from_tty, otherwise we could start asking if the
 793      user really wants to load a new symbol table, etc... */
 794   printf_unfiltered ("Reading symbols from %s...", arg);
 795   exec_open (arg, 0);
 796   symbol_file_add_main (arg, 0);
 797   printf_unfiltered ("done\n");
 798
 799   /* exec_open will kill our target, so reinstall the ICE as
 800      the target. */
 801   v850ice_open (NULL, 0);
 802
 803   togdb_force_update ();
 804   return 1;
 805 }
 806
 807 static int
 808 ice_cont (char *c)
 809 {
 810   printf_filtered ("continue (ice)\n");
 811   ReplyMessage ((LRESULT) 1);
 812
 813   if (gdbtk_interp == NULL)
 814     {
 815       continue_command (NULL, 1);
 816     }
 817   else
 818     Tcl_Eval (gdbtk_interp, "gdb_immediate continue");
 819
 820   return 1;
 821 }
 822
 823 static void
 824 do_gdb (char *cmd, char *str, void (*func) (char *, int), int count)
 825 {
 826   ReplyMessage ((LRESULT) 1);
 827
 828   while (count--)
 829     {
 830       printf_unfiltered (str);
 831
 832       if (gdbtk_interp == NULL)
 833         {
 834           func (NULL, 0);
 835         }
 836       else
 837         Tcl_Eval (gdbtk_interp, cmd);
 838     }
 839 }
 840
 841
 842 static int
 843 ice_stepi (char *c)
 844 {
 845   int count = (int) c;
 846
 847   do_gdb ("gdb_immediate stepi", "stepi (ice)\n", stepi_command, count);
 848   return 1;
 849 }
 850
 851 static int
 852 ice_nexti (char *c)
 853 {
 854   int count = (int) c;
 855
 856   do_gdb ("gdb_immediate nexti", "nexti (ice)\n", nexti_command, count);
 857   return 1;
 858 }
 859
 860 static void
 861 v850ice_command (char *arg, int from_tty)
 862 {
 863   struct MessageIO iob;
 864   char buf[256];
 865
 866   iob.buf = buf;
 867   iob.size = 0;
 868   ExeAppReq ("GDB", GCOMMAND, arg, &iob);
 869 }
 870
 871 static void
 872 togdb_force_update (void)
 873 {
 874   if (gdbtk_interp != NULL)
 875     Tcl_Eval (gdbtk_interp, "gdbtk_update");
 876 }
 877
 878 static void
 879 view_source (CORE_ADDR addr)
 880 {
 881   char c[256];
 882
 883   if (gdbtk_interp != NULL)
 884     {
 885       sprintf (c, "catch {set src [lindex [ManagedWin::find SrcWin] 0]\n$src location BROWSE [gdb_loc *0x%x]}", addr);
 886       Tcl_Eval (gdbtk_interp, c);
 887     }
 888 }
 889
 890 /* Define the target subroutine names */
 891
 892 static void
 893 init_850ice_ops (void)
 894 {
 895   v850ice_ops.to_shortname = "ice";
 896   v850ice_ops.to_longname = "NEC V850 ICE interface";
 897   v850ice_ops.to_doc = "Debug a system controlled by a NEC 850 ICE.";
 898   v850ice_ops.to_open = v850ice_open;
 899   v850ice_ops.to_close = v850ice_close;
 900   v850ice_ops.to_detach = v850ice_detach;
 901   v850ice_ops.to_resume = v850ice_resume;
 902   v850ice_ops.to_wait = v850ice_wait;
 903   v850ice_ops.to_fetch_registers = v850ice_fetch_registers;
 904   v850ice_ops.to_store_registers = v850ice_store_registers;
 905   v850ice_ops.to_prepare_to_store = v850ice_prepare_to_store;
 906   v850ice_ops.to_xfer_memory = v850ice_xfer_memory;
 907   v850ice_ops.to_files_info = v850ice_files_info;
 908   v850ice_ops.to_insert_breakpoint = v850ice_insert_breakpoint;
 909   v850ice_ops.to_remove_breakpoint = v850ice_remove_breakpoint;
 910   v850ice_ops.to_kill = v850ice_kill;
 911   v850ice_ops.to_load = v850ice_load;
 912   v850ice_ops.to_mourn_inferior = v850ice_mourn;
 913   v850ice_ops.to_stop = v850ice_stop;
 914   v850ice_ops.to_stratum = process_stratum;
 915   v850ice_ops.to_has_all_memory = 1;
 916   v850ice_ops.to_has_memory = 1;
 917   v850ice_ops.to_has_stack = 1;
 918   v850ice_ops.to_has_registers = 1;
 919   v850ice_ops.to_has_execution = 1;
 920   v850ice_ops.to_magic = OPS_MAGIC;
 921 }
 922
 923 void
 924 _initialize_v850ice (void)
 925 {
 926   init_850ice_ops ();
 927   add_target (&v850ice_ops);
 928
 929   add_com ("ice", class_obscure, v850ice_command,
 930            "Send command to ICE");
 931 }