git.gag.com Git - debian/pforth/blob - csrc/pf_inner.c

   1 /* @(#) pf_inner.c 98/03/16 1.7 */\r
   2 /***************************************************************\r
   3 ** Inner Interpreter for Forth based on 'C'\r
   4 **\r
   5 ** Author: Phil Burk\r
   6 ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom\r
   7 **\r
   8 ** The pForth software code is dedicated to the public domain,\r
   9 ** and any third party may reproduce, distribute and modify\r
  10 ** the pForth software code or any derivative works thereof\r
  11 ** without any compensation or license.  The pForth software\r
  12 ** code is provided on an "as is" basis without any warranty\r
  13 ** of any kind, including, without limitation, the implied\r
  14 ** warranties of merchantability and fitness for a particular\r
  15 ** purpose and their equivalents under the laws of any jurisdiction.\r
  16 **\r
  17 ****************************************************************\r
  18 **\r
  19 ** 940502 PLB Creation.\r
  20 ** 940505 PLB More macros.\r
  21 ** 940509 PLB Moved all stack stuff into pfCatch.\r
  22 ** 941014 PLB Converted to flat secondary strusture.\r
  23 ** 941027 rdg added casts to ID_SP_FETCH, ID_RP_FETCH, \r
  24 **             and ID_HERE for armcc\r
  25 ** 941130 PLB Made w@ unsigned\r
  26 **\r
  27 ***************************************************************/\r
  28 \r
  29 #include "pf_all.h"\r
  30 \r
  31 #ifdef WIN32\r
  32 #include <crtdbg.h>\r
  33 #endif\r
  34 \r
  35 #define SYSTEM_LOAD_FILE "system.fth"\r
  36 \r
  37 /***************************************************************\r
  38 ** Macros for data stack access.\r
  39 ** TOS is cached in a register in pfCatch.\r
  40 ***************************************************************/\r
  41 \r
  42 #define STKPTR   (DataStackPtr)\r
  43 #define M_POP    (*(STKPTR++))\r
  44 #define M_PUSH(n) {*(--(STKPTR)) = (cell) (n);}\r
  45 #define M_STACK(n) (STKPTR[n])\r
  46 \r
  47 #define TOS      (TopOfStack)\r
  48 #define PUSH_TOS M_PUSH(TOS)\r
  49 #define M_DUP    PUSH_TOS;\r
  50 #define M_DROP   { TOS = M_POP; }\r
  51 \r
  52 \r
  53 /***************************************************************\r
  54 ** Macros for Floating Point stack access.\r
  55 ***************************************************************/\r
  56 #ifdef PF_SUPPORT_FP\r
  57 #define FP_STKPTR   (FloatStackPtr)\r
  58 #define M_FP_SPZERO (gCurrentTask->td_FloatStackBase)\r
  59 #define M_FP_POP    (*(FP_STKPTR++))\r
  60 #define M_FP_PUSH(n) {*(--(FP_STKPTR)) = (PF_FLOAT) (n);}\r
  61 #define M_FP_STACK(n) (FP_STKPTR[n])\r
  62 \r
  63 #define FP_TOS      (fpTopOfStack)\r
  64 #define PUSH_FP_TOS M_FP_PUSH(FP_TOS)\r
  65 #define M_FP_DUP    PUSH_FP_TOS;\r
  66 #define M_FP_DROP   { FP_TOS = M_FP_POP; }\r
  67 #endif\r
  68 \r
  69 /***************************************************************\r
  70 ** Macros for return stack access.\r
  71 ***************************************************************/\r
  72 \r
  73 #define TORPTR (ReturnStackPtr)\r
  74 #define M_R_DROP {TORPTR++;}\r
  75 #define M_R_POP (*(TORPTR++))\r
  76 #define M_R_PICK(n) (TORPTR[n])\r
  77 #define M_R_PUSH(n) {*(--(TORPTR)) = (cell) (n);}\r
  78 \r
  79 /***************************************************************\r
  80 ** Misc Forth macros\r
  81 ***************************************************************/\r
  82                         \r
  83 #define M_BRANCH   { InsPtr = (cell *) (((uint8 *) InsPtr) + READ_LONG_DIC(InsPtr)); }\r
  84 \r
  85 /* Cache top of data stack like in JForth. */\r
  86 #ifdef PF_SUPPORT_FP\r
  87 #define LOAD_REGISTERS \\r
  88         { \\r
  89                 STKPTR = gCurrentTask->td_StackPtr; \\r
  90                 TOS = M_POP; \\r
  91                 FP_STKPTR = gCurrentTask->td_FloatStackPtr; \\r
  92                 FP_TOS = M_FP_POP; \\r
  93                 TORPTR = gCurrentTask->td_ReturnPtr; \\r
  94          }\r
  95          \r
  96 #define SAVE_REGISTERS \\r
  97         { \\r
  98                 gCurrentTask->td_ReturnPtr = TORPTR; \\r
  99                 M_PUSH( TOS ); \\r
 100                 gCurrentTask->td_StackPtr = STKPTR; \\r
 101                 M_FP_PUSH( FP_TOS ); \\r
 102                 gCurrentTask->td_FloatStackPtr = FP_STKPTR; \\r
 103          }\r
 104          \r
 105 #else\r
 106 /* Cache top of data stack like in JForth. */\r
 107 #define LOAD_REGISTERS \\r
 108         { \\r
 109                 STKPTR = gCurrentTask->td_StackPtr; \\r
 110                 TOS = M_POP; \\r
 111                 TORPTR = gCurrentTask->td_ReturnPtr; \\r
 112          }\r
 113          \r
 114 #define SAVE_REGISTERS \\r
 115         { \\r
 116                 gCurrentTask->td_ReturnPtr = TORPTR; \\r
 117                 M_PUSH( TOS ); \\r
 118                 gCurrentTask->td_StackPtr = STKPTR; \\r
 119          }\r
 120 #endif\r
 121 \r
 122 #define M_DOTS \\r
 123         SAVE_REGISTERS; \\r
 124         ffDotS( ); \\r
 125         LOAD_REGISTERS;\r
 126         \r
 127 #define DO_VAR(varname) { PUSH_TOS; TOS = (cell) &varname; }\r
 128 \r
 129 #ifdef PF_SUPPORT_FP\r
 130 #define M_THROW(err) \\r
 131         { \\r
 132                 ExceptionReturnCode = (ThrowCode)(err); \\r
 133                 TORPTR = InitialReturnStack; /* Will cause return to 'C' */ \\r
 134                 STKPTR = InitialDataStack; \\r
 135                 FP_STKPTR = InitialFloatStack; \\r
 136         }\r
 137 #else\r
 138 #define M_THROW(err) \\r
 139         { \\r
 140                 ExceptionReturnCode = (err); \\r
 141                 TORPTR = InitialReturnStack; /* Will cause return to 'C' */ \\r
 142                 STKPTR = InitialDataStack; \\r
 143         }\r
 144 #endif\r
 145 \r
 146 /***************************************************************\r
 147 ** Other macros\r
 148 ***************************************************************/\r
 149 \r
 150 #define BINARY_OP( op ) { TOS = M_POP op TOS; }\r
 151 #define endcase break\r
 152                 \r
 153 #if defined(PF_NO_SHELL) || !defined(PF_SUPPORT_TRACE)\r
 154         #define TRACENAMES /* no names */\r
 155 #else\r
 156 /* Display name of executing routine. */\r
 157 static void TraceNames( ExecToken Token, int32 Level )\r
 158 {\r
 159         char *DebugName;\r
 160         int32 i;\r
 161         \r
 162         if( ffTokenToName( Token, &DebugName ) )\r
 163         {\r
 164                 cell NumSpaces;\r
 165                 if( gCurrentTask->td_OUT > 0 ) EMIT_CR;\r
 166                 EMIT( '>' );\r
 167                 for( i=0; i<Level; i++ )\r
 168                 {\r
 169                         MSG( "  " );\r
 170                 }\r
 171                 TypeName( DebugName );\r
 172 /* Space out to column N then .S */\r
 173                 NumSpaces = 30 - gCurrentTask->td_OUT;\r
 174                 for( i=0; i < NumSpaces; i++ )\r
 175                 {\r
 176                         EMIT( ' ' );\r
 177                 }\r
 178                 ffDotS();\r
 179 /* No longer needed?            gCurrentTask->td_OUT = 0; */ /* !!! Hack for ffDotS() */\r
 180                 \r
 181         }\r
 182         else\r
 183         {\r
 184                 MSG_NUM_H("Couldn't find Name for ", Token);\r
 185         }\r
 186 }\r
 187 \r
 188 #define TRACENAMES \\r
 189         if( (gVarTraceLevel > Level) ) \\r
 190         { SAVE_REGISTERS; TraceNames( Token, Level ); LOAD_REGISTERS; }\r
 191 #endif /* PF_NO_SHELL */\r
 192 \r
 193 /* Use local copy of CODE_BASE for speed. */\r
 194 #define LOCAL_CODEREL_TO_ABS( a ) ((cell *) (((int32) a) + CodeBase))\r
 195 \r
 196 static const char *pfSelectFileModeCreate( int fam );\r
 197 static const char *pfSelectFileModeOpen( int fam );\r
 198 \r
 199 /**************************************************************/\r
 200 static const char *pfSelectFileModeCreate( int fam )\r
 201 {\r
 202         const char *famText = NULL;\r
 203         switch( fam )\r
 204         {\r
 205         case (PF_FAM_WRITE_ONLY + PF_FAM_BINARY_FLAG):\r
 206                 famText = PF_FAM_BIN_CREATE_WO;\r
 207                 break;\r
 208         case (PF_FAM_READ_WRITE + PF_FAM_BINARY_FLAG):\r
 209                 famText = PF_FAM_BIN_CREATE_RW;\r
 210                 break;\r
 211         case PF_FAM_WRITE_ONLY:\r
 212                 famText = PF_FAM_CREATE_WO;\r
 213                 break;\r
 214         case PF_FAM_READ_WRITE:\r
 215                 famText = PF_FAM_CREATE_RW;\r
 216                 break;\r
 217         default:\r
 218                 famText = "illegal";\r
 219                 break;\r
 220         }\r
 221         return famText;\r
 222 }\r
 223 \r
 224 /**************************************************************/\r
 225 static const char *pfSelectFileModeOpen( int fam )\r
 226 {\r
 227         const char *famText = NULL;\r
 228         switch( fam )\r
 229         {\r
 230         case (PF_FAM_READ_ONLY + PF_FAM_BINARY_FLAG):\r
 231                 famText = PF_FAM_BIN_OPEN_RO;\r
 232                 break;\r
 233         case (PF_FAM_WRITE_ONLY + PF_FAM_BINARY_FLAG):\r
 234                 famText = PF_FAM_BIN_CREATE_WO;\r
 235                 break;\r
 236         case (PF_FAM_READ_WRITE + PF_FAM_BINARY_FLAG):\r
 237                 famText = PF_FAM_BIN_OPEN_RW;\r
 238                 break;\r
 239         case PF_FAM_READ_ONLY:\r
 240                 famText = PF_FAM_OPEN_RO;\r
 241                 break;\r
 242         case PF_FAM_WRITE_ONLY:\r
 243                 famText = PF_FAM_CREATE_WO;\r
 244                 break;\r
 245         case PF_FAM_READ_WRITE:\r
 246         default:\r
 247                 famText = PF_FAM_OPEN_RW;\r
 248                 break;\r
 249         }\r
 250         return famText;\r
 251 }\r
 252 \r
 253 /**************************************************************/\r
 254 int pfCatch( ExecToken XT )\r
 255 {\r
 256         register cell  TopOfStack;    /* Cache for faster execution. */\r
 257         register cell *DataStackPtr;\r
 258         register cell *ReturnStackPtr;\r
 259         register cell *InsPtr = NULL;\r
 260         register cell  Token;\r
 261         cell           Scratch;\r
 262         \r
 263 #ifdef PF_SUPPORT_FP\r
 264         PF_FLOAT       fpTopOfStack;\r
 265         PF_FLOAT      *FloatStackPtr;\r
 266         PF_FLOAT       fpScratch;\r
 267         PF_FLOAT       fpTemp;\r
 268         PF_FLOAT      *InitialFloatStack;\r
 269 #endif\r
 270 #ifdef PF_SUPPORT_TRACE\r
 271         int32 Level = 0;\r
 272 #endif\r
 273         cell          *LocalsPtr = NULL;\r
 274         cell           Temp;\r
 275         cell          *InitialReturnStack;\r
 276         cell          *InitialDataStack;\r
 277         cell           FakeSecondary[2];\r
 278         char          *CharPtr;\r
 279         cell          *CellPtr;\r
 280         FileStream    *FileID;\r
 281         uint8         *CodeBase = CODE_BASE;\r
 282         ThrowCode      ExceptionReturnCode = 0;\r
 283         \r
 284 /* FIXME\r
 285         gExecutionDepth += 1;\r
 286         PRT(("pfCatch( 0x%x ), depth = %d\n", XT, gExecutionDepth ));\r
 287 */\r
 288 \r
 289 /*\r
 290 ** Initialize FakeSecondary this way to avoid having stuff in the data section,\r
 291 ** which is not supported for some embedded system loaders.\r
 292 */\r
 293         FakeSecondary[0] = 0;\r
 294         FakeSecondary[1] = ID_EXIT; /* For EXECUTE */\r
 295 \r
 296 /* Move data from task structure to registers for speed. */\r
 297         LOAD_REGISTERS;\r
 298 \r
 299 /* Save initial stack depths for THROW */\r
 300         InitialReturnStack = TORPTR;\r
 301         InitialDataStack   = STKPTR ;\r
 302 #ifdef PF_SUPPORT_FP\r
 303         InitialFloatStack  = FP_STKPTR;\r
 304 #endif\r
 305 \r
 306         Token = XT;\r
 307 \r
 308         do\r
 309         {\r
 310 DBUG(("pfCatch: Token = 0x%x\n", Token ));\r
 311 \r
 312 /* --------------------------------------------------------------- */\r
 313 /* If secondary, thread down code tree until we hit a primitive. */\r
 314                 while( !IsTokenPrimitive( Token ) )\r
 315                 {\r
 316 #ifdef PF_SUPPORT_TRACE\r
 317                         if((gVarTraceFlags & TRACE_INNER) )\r
 318                         {\r
 319                                 MSG("pfCatch: Secondary Token = 0x");\r
 320                                 ffDotHex(Token);\r
 321                                 MSG_NUM_H(", InsPtr = 0x", InsPtr);\r
 322                         }\r
 323                         TRACENAMES;\r
 324 #endif\r
 325 \r
 326 /* Save IP on return stack like a JSR. */\r
 327                         M_R_PUSH( InsPtr );\r
 328                         \r
 329 /* Convert execution token to absolute address. */\r
 330                         InsPtr = (cell *) ( LOCAL_CODEREL_TO_ABS(Token) );\r
 331 \r
 332 /* Fetch token at IP. */\r
 333                         Token = READ_LONG_DIC(InsPtr++);\r
 334                         \r
 335 #ifdef PF_SUPPORT_TRACE\r
 336 /* Bump level for trace display */\r
 337                         Level++;\r
 338 #endif\r
 339                 }\r
 340 \r
 341                 \r
 342 #ifdef PF_SUPPORT_TRACE\r
 343                 TRACENAMES;\r
 344 #endif\r
 345                         \r
 346 /* Execute primitive Token. */\r
 347                 switch( Token )\r
 348                 {\r
 349                         \r
 350         /* Pop up a level in Forth inner interpreter.\r
 351         ** Used to implement semicolon.\r
 352         ** Put first in switch because ID_EXIT==0 */\r
 353                 case ID_EXIT:\r
 354                         InsPtr = ( cell *) M_R_POP;\r
 355 #ifdef PF_SUPPORT_TRACE\r
 356                         Level--;\r
 357 #endif\r
 358                         endcase;\r
 359                                                 \r
 360                 case ID_1MINUS:  TOS--; endcase;\r
 361                         \r
 362                 case ID_1PLUS:   TOS++; endcase;\r
 363                         \r
 364 #ifndef PF_NO_SHELL\r
 365                 case ID_2LITERAL:\r
 366                         ff2Literal( TOS, M_POP );\r
 367                         M_DROP;\r
 368                         endcase;\r
 369 #endif  /* !PF_NO_SHELL */\r
 370 \r
 371                 case ID_2LITERAL_P:\r
 372 /* hi part stored first, put on top of stack */\r
 373                         PUSH_TOS;\r
 374                         TOS = READ_LONG_DIC(InsPtr++);\r
 375                         M_PUSH(READ_LONG_DIC(InsPtr++));\r
 376                         endcase;\r
 377                         \r
 378                 case ID_2MINUS:  TOS -= 2; endcase;\r
 379                         \r
 380                 case ID_2PLUS:   TOS += 2; endcase;\r
 381                 \r
 382                 \r
 383                 case ID_2OVER:  /* ( a b c d -- a b c d a b ) */\r
 384                         PUSH_TOS;\r
 385                         Scratch = M_STACK(3);\r
 386                         M_PUSH(Scratch);\r
 387                         TOS = M_STACK(3);\r
 388                         endcase;\r
 389                         \r
 390                 case ID_2SWAP:  /* ( a b c d -- c d a b ) */\r
 391                         Scratch = M_STACK(0);    /* c */\r
 392                         M_STACK(0) = M_STACK(2); /* a */\r
 393                         M_STACK(2) = Scratch;    /* c */\r
 394                         Scratch = TOS;           /* d */\r
 395                         TOS = M_STACK(1);        /* b */\r
 396                         M_STACK(1) = Scratch;    /* d */\r
 397                         endcase;\r
 398                         \r
 399                 case ID_2DUP:   /* ( a b -- a b a b ) */\r
 400                         PUSH_TOS;\r
 401                         Scratch = M_STACK(1);\r
 402                         M_PUSH(Scratch);\r
 403                         endcase;\r
 404                         \r
 405                 case ID_2_R_FETCH:\r
 406                         PUSH_TOS;\r
 407                         M_PUSH( (*(TORPTR+1)) );\r
 408                         TOS = (*(TORPTR));\r
 409                         endcase;\r
 410 \r
 411                 case ID_2_R_FROM:\r
 412                         PUSH_TOS;\r
 413                         TOS = M_R_POP;\r
 414                         M_PUSH( M_R_POP );\r
 415                         endcase;\r
 416 \r
 417                 case ID_2_TO_R:\r
 418                         M_R_PUSH( M_POP );\r
 419                         M_R_PUSH( TOS );\r
 420                         M_DROP;\r
 421                         endcase;\r
 422                 \r
 423                 case ID_ACCEPT_P: /* ( c-addr +n1 -- +n2 ) */\r
 424                         CharPtr = (char *) M_POP;\r
 425                         TOS = ioAccept( CharPtr, TOS );\r
 426                         endcase;\r
 427                         \r
 428 #ifndef PF_NO_SHELL\r
 429                 case ID_ALITERAL:\r
 430                         ffALiteral( ABS_TO_CODEREL(TOS) );\r
 431                         M_DROP;\r
 432                         endcase;\r
 433 #endif  /* !PF_NO_SHELL */\r
 434 \r
 435                 case ID_ALITERAL_P:\r
 436                         PUSH_TOS;\r
 437                         TOS = (cell) LOCAL_CODEREL_TO_ABS( READ_LONG_DIC(InsPtr++) );\r
 438                         endcase;\r
 439                         \r
 440 /* Allocate some extra and put validation identifier at base */\r
 441 #define PF_MEMORY_VALIDATOR  (0xA81B4D69)\r
 442                 case ID_ALLOCATE:\r
 443                         /* Allocate at least one cell's worth because we clobber first cell. */\r
 444                         if ( TOS < sizeof(cell) )\r
 445                         {\r
 446                                 Temp = sizeof(cell);\r
 447                         }\r
 448                         else\r
 449                         {\r
 450                                 Temp = TOS;\r
 451                         }\r
 452                         /* Allocate extra cells worth because we store validation info. */\r
 453                         CellPtr = (cell *) pfAllocMem( Temp + sizeof(cell) );\r
 454                         if( CellPtr )\r
 455                         {\r
 456 /* This was broken into two steps because different compilers incremented\r
 457 ** CellPtr before or after the XOR step. */\r
 458                                 Temp = (int32)CellPtr ^ PF_MEMORY_VALIDATOR;\r
 459                                 *CellPtr++ = Temp;\r
 460                                 M_PUSH( (cell) CellPtr );\r
 461                                 TOS = 0;\r
 462                         }\r
 463                         else\r
 464                         {\r
 465                                 M_PUSH( 0 );\r
 466                                 TOS = -1;  /* FIXME Fix error code. */\r
 467                         }\r
 468                         endcase;\r
 469 \r
 470                 case ID_AND:     BINARY_OP( & ); endcase;\r
 471                 \r
 472                 case ID_ARSHIFT:     BINARY_OP( >> ); endcase;  /* Arithmetic right shift */\r
 473                 \r
 474                 case ID_BODY_OFFSET:\r
 475                         PUSH_TOS;\r
 476                         TOS = CREATE_BODY_OFFSET;\r
 477                         endcase;\r
 478                         \r
 479 /* Branch is followed by an offset relative to address of offset. */\r
 480                 case ID_BRANCH:\r
 481 DBUGX(("Before Branch: IP = 0x%x\n", InsPtr ));\r
 482                         M_BRANCH;\r
 483 DBUGX(("After Branch: IP = 0x%x\n", InsPtr ));\r
 484                         endcase;\r
 485 \r
 486                 case ID_BYE:\r
 487                         M_THROW( THROW_BYE );\r
 488                         endcase;\r
 489 \r
 490                 case ID_BAIL:\r
 491                         MSG("Emergency exit.\n");\r
 492                         EXIT(1);\r
 493                         endcase;\r
 494                 \r
 495                 case ID_CATCH:\r
 496                         Scratch = TOS;\r
 497                         TOS = M_POP;\r
 498                         SAVE_REGISTERS;\r
 499                         Scratch = pfCatch( Scratch );\r
 500                         LOAD_REGISTERS;\r
 501                         M_PUSH( TOS );\r
 502                         TOS = Scratch;\r
 503                         endcase;\r
 504 \r
 505                 case ID_CALL_C:\r
 506                         SAVE_REGISTERS;\r
 507                         Scratch = READ_LONG_DIC(InsPtr++);\r
 508                         CallUserFunction( Scratch & 0xFFFF,\r
 509                                 (Scratch >> 31) & 1,\r
 510                                 (Scratch >> 24) & 0x7F );\r
 511                         LOAD_REGISTERS;\r
 512                         endcase;\r
 513 \r
 514                 case ID_CFETCH:   TOS = *((uint8 *) TOS); endcase;\r
 515 \r
 516                 case ID_CMOVE: /* ( src dst n -- ) */\r
 517                         {\r
 518                                 register char *DstPtr = (char *) M_POP; /* dst */\r
 519                                 CharPtr = (char *) M_POP;    /* src */\r
 520                                 for( Scratch=0; (uint32) Scratch < (uint32) TOS ; Scratch++ )\r
 521                                 {\r
 522                                         *DstPtr++ = *CharPtr++;\r
 523                                 }\r
 524                                 M_DROP;\r
 525                         }\r
 526                         endcase;\r
 527                         \r
 528                 case ID_CMOVE_UP: /* ( src dst n -- ) */\r
 529                         {\r
 530                                 register char *DstPtr = ((char *) M_POP) + TOS; /* dst */\r
 531                                 CharPtr = ((char *) M_POP) + TOS;;    /* src */\r
 532                                 for( Scratch=0; (uint32) Scratch < (uint32) TOS ; Scratch++ )\r
 533                                 {\r
 534                                         *(--DstPtr) = *(--CharPtr);\r
 535                                 }\r
 536                                 M_DROP;\r
 537                         }\r
 538                         endcase;\r
 539                 \r
 540 #ifndef PF_NO_SHELL\r
 541                 case ID_COLON:\r
 542                         SAVE_REGISTERS;\r
 543                         ffColon( );\r
 544                         LOAD_REGISTERS;\r
 545                         endcase;\r
 546                 case ID_COLON_P:  /* ( $name xt -- ) */\r
 547                         CreateDicEntry( TOS, (char *) M_POP, 0 );\r
 548                         M_DROP;\r
 549                         endcase;\r
 550 #endif  /* !PF_NO_SHELL */\r
 551 \r
 552                 case ID_COMPARE:\r
 553                         {\r
 554                                 const char *s1, *s2;\r
 555                                 int32 len1;\r
 556                                 s2 = (const char *) M_POP;\r
 557                                 len1 = M_POP;\r
 558                                 s1 = (const char *) M_POP;\r
 559                                 TOS = ffCompare( s1, len1, s2, TOS );\r
 560                         }\r
 561                         endcase;\r
 562                         \r
 563 /* ( a b -- flag , Comparisons ) */\r
 564                 case ID_COMP_EQUAL:\r
 565                         TOS = ( TOS == M_POP ) ? FTRUE : FFALSE ;\r
 566                         endcase;\r
 567                 case ID_COMP_NOT_EQUAL:\r
 568                         TOS = ( TOS != M_POP ) ? FTRUE : FFALSE ;\r
 569                         endcase;\r
 570                 case ID_COMP_GREATERTHAN:\r
 571                         TOS = ( M_POP > TOS ) ? FTRUE : FFALSE ;\r
 572                         endcase;\r
 573                 case ID_COMP_LESSTHAN:\r
 574                         TOS = (  M_POP < TOS ) ? FTRUE : FFALSE ;\r
 575                         endcase;\r
 576                 case ID_COMP_U_GREATERTHAN:\r
 577                         TOS = ( ((uint32)M_POP) > ((uint32)TOS) ) ? FTRUE : FFALSE ;\r
 578                         endcase;\r
 579                 case ID_COMP_U_LESSTHAN:\r
 580                         TOS = ( ((uint32)M_POP) < ((uint32)TOS) ) ? FTRUE : FFALSE ;\r
 581                         endcase;\r
 582                 case ID_COMP_ZERO_EQUAL:\r
 583                         TOS = ( TOS == 0 ) ? FTRUE : FFALSE ;\r
 584                         endcase;\r
 585                 case ID_COMP_ZERO_NOT_EQUAL:\r
 586                         TOS = ( TOS != 0 ) ? FTRUE : FALSE ;\r
 587                         endcase;\r
 588                 case ID_COMP_ZERO_GREATERTHAN:\r
 589                         TOS = ( TOS > 0 ) ? FTRUE : FFALSE ;\r
 590                         endcase;\r
 591                 case ID_COMP_ZERO_LESSTHAN:\r
 592                         TOS = ( TOS < 0 ) ? FTRUE : FFALSE ;\r
 593                         endcase;\r
 594                         \r
 595                 case ID_CR:\r
 596                         EMIT_CR;\r
 597                         endcase;\r
 598                 \r
 599 #ifndef PF_NO_SHELL\r
 600                 case ID_CREATE:\r
 601                         SAVE_REGISTERS;\r
 602                         ffCreate();\r
 603                         LOAD_REGISTERS;\r
 604                         endcase;\r
 605 #endif  /* !PF_NO_SHELL */\r
 606 \r
 607                 case ID_CREATE_P:\r
 608                         PUSH_TOS;\r
 609 /* Put address of body on stack.  Insptr points after code start. */\r
 610                         TOS = (cell) ((char *)InsPtr - sizeof(cell) + CREATE_BODY_OFFSET );\r
 611                         endcase;\r
 612         \r
 613                 case ID_CSTORE: /* ( c caddr -- ) */\r
 614                         *((uint8 *) TOS) = (uint8) M_POP;\r
 615                         M_DROP;\r
 616                         endcase;\r
 617 \r
 618 /* Double precision add. */\r
 619                 case ID_D_PLUS:  /* D+ ( al ah bl bh -- sl sh ) */ \r
 620                         {\r
 621                                 register ucell ah,al,bl,sh,sl;\r
 622 #define bh TOS\r
 623                                 bl = M_POP;\r
 624                                 ah = M_POP;\r
 625                                 al = M_POP;\r
 626                                 sh = 0;\r
 627                                 sl = al + bl;\r
 628                                 if( sl < bl ) sh = 1; /* Carry */\r
 629                                 sh += ah + bh;\r
 630                                 M_PUSH( sl );\r
 631                                 TOS = sh;\r
 632 #undef bh\r
 633                         }\r
 634                         endcase;\r
 635         \r
 636 /* Double precision subtract. */\r
 637                 case ID_D_MINUS:  /* D- ( al ah bl bh -- sl sh ) */ \r
 638                         {\r
 639                                 register ucell ah,al,bl,sh,sl;\r
 640 #define bh TOS\r
 641                                 bl = M_POP;\r
 642                                 ah = M_POP;\r
 643                                 al = M_POP;\r
 644                                 sh = 0;\r
 645                                 sl = al - bl;\r
 646                                 if( al < bl ) sh = 1; /* Borrow */\r
 647                                 sh = ah - bh - sh;\r
 648                                 M_PUSH( sl );\r
 649                                 TOS = sh;\r
 650 #undef bh\r
 651                         }\r
 652                         endcase;\r
 653                         \r
 654 /* Perform 32*32 bit multiply for 64 bit result, by factoring into 16 bit quantities. */\r
 655 /* Using an improved algorithm suggested by Steve Green. */\r
 656                 case ID_D_UMTIMES:  /* M* ( a b -- pl ph ) */ \r
 657                         {\r
 658                                 ucell ahi, alo, bhi, blo, temp;\r
 659                                 ucell pl, ph;\r
 660 /* Get values from stack. */\r
 661                                 ahi = M_POP;\r
 662                                 bhi = TOS;\r
 663 /* Break into hi and lo 16 bit parts. */\r
 664                                 alo = ahi & 0xFFFF;\r
 665                                 ahi = ahi>>16;\r
 666                                 blo = bhi & 0xFFFF;\r
 667                                 bhi = bhi>>16;\r
 668                                 ph = 0;\r
 669 /* ahi * bhi */\r
 670                                 pl = ahi * bhi;\r
 671                                 ph = pl >> 16;  /* shift 64 bit value by 16 */\r
 672                                 pl = pl << 16;\r
 673 /* ahi * blo */\r
 674                                 temp = ahi * blo;\r
 675                                 pl += temp;\r
 676                                 if( pl < temp ) ph += 1; /* Carry */\r
 677 /* alo * bhi  */\r
 678                                 temp = alo * bhi;\r
 679                                 pl += temp;\r
 680                                 if( pl < temp ) ph += 1; /* Carry */\r
 681                                 ph = (ph << 16) | (pl >> 16); /* shift 64 bit value by 16 */\r
 682                                 pl = pl << 16;\r
 683 /* alo * blo */\r
 684                                 temp = alo * blo;\r
 685                                 pl += temp;\r
 686                                 if( pl < temp ) ph += 1; /* Carry */\r
 687 \r
 688                                 M_PUSH( pl );\r
 689                                 TOS = ph;\r
 690                         }\r
 691                         endcase;\r
 692                         \r
 693 /* Perform 32*32 bit multiply for 64 bit result, using shift and add. */\r
 694                 case ID_D_MTIMES:  /* M* ( a b -- pl ph ) */ \r
 695                         {\r
 696                                 cell a,b;\r
 697                                 ucell ap,bp, ahi, alo, bhi, blo, temp;\r
 698                                 ucell pl, ph;\r
 699 /* Get values from stack. */\r
 700                                 a = M_POP;\r
 701                                 b = TOS;\r
 702                                 ap = (a < 0) ? -a : a ; /* Positive A */\r
 703                                 bp = (b < 0) ? -b : b ; /* Positive B */\r
 704 /* Break into hi and lo 16 bit parts. */\r
 705                                 alo = ap & 0xFFFF;\r
 706                                 ahi = ap>>16;\r
 707                                 blo = bp & 0xFFFF;\r
 708                                 bhi = bp>>16;\r
 709                                 ph = 0;\r
 710 /* ahi * bhi */\r
 711                                 pl = ahi * bhi;\r
 712                                 ph = pl >> 16;  /* shift 64 bit value by 16 */\r
 713                                 pl = pl << 16;\r
 714 /* ahi * blo */\r
 715                                 temp = ahi * blo;\r
 716                                 pl += temp;\r
 717                                 if( pl < temp ) ph += 1; /* Carry */\r
 718 /* alo * bhi  */\r
 719                                 temp = alo * bhi;\r
 720                                 pl += temp;\r
 721                                 if( pl < temp ) ph += 1; /* Carry */\r
 722                                 ph = (ph << 16) | (pl >> 16); /* shift 64 bit value by 16 */\r
 723                                 pl = pl << 16;\r
 724 /* alo * blo */\r
 725                                 temp = alo * blo;\r
 726                                 pl += temp;\r
 727                                 if( pl < temp ) ph += 1; /* Carry */\r
 728 \r
 729 /* Negate product if one operand negative. */\r
 730                                 if( ((a ^ b) & 0x80000000) )\r
 731                                 {\r
 732                                         pl = 0-pl;\r
 733                                         if( pl & 0x80000000 )\r
 734                                         {\r
 735                                                 ph = -1 - ph;   /* Borrow */\r
 736                                         }\r
 737                                         else\r
 738                                         {\r
 739                                                 ph = 0 - ph;\r
 740                                         }\r
 741                                 }\r
 742 \r
 743                                 M_PUSH( pl );\r
 744                                 TOS = ph;\r
 745                         }\r
 746                         endcase;\r
 747 \r
 748 #define DULT(du1l,du1h,du2l,du2h) ( (du2h<du1h) ? FALSE : ( (du2h==du1h) ? (du1l<du2l) : TRUE) )\r
 749 /* Perform 64/32 bit divide for 32 bit result, using shift and subtract. */\r
 750                 case ID_D_UMSMOD:  /* UM/MOD ( al ah bdiv -- rem q ) */ \r
 751                         {\r
 752                                 ucell ah,al, q,di, bl,bh, sl,sh;\r
 753                                 ah = M_POP;\r
 754                                 al = M_POP;\r
 755                                 bh = TOS;\r
 756                                 bl = 0;\r
 757                                 q = 0;\r
 758                                 for( di=0; di<32; di++ )\r
 759                                 {\r
 760                                         if( !DULT(al,ah,bl,bh) )\r
 761                                         {\r
 762                                                 sh = 0;\r
 763                                                 sl = al - bl;\r
 764                                                 if( al < bl ) sh = 1; /* Borrow */\r
 765                                                 sh = ah - bh - sh;\r
 766                                                 ah = sh;\r
 767                                                 al = sl;\r
 768                                                 q |= 1;\r
 769                                         }\r
 770                                         q = q << 1;\r
 771                                         bl = (bl >> 1) | (bh << 31);\r
 772                                         bh = bh >> 1;\r
 773                                 }\r
 774                                 if( !DULT(al,ah,bl,bh) )\r
 775                                 {\r
 776                                 \r
 777                                         al = al - bl;\r
 778                                         q |= 1;\r
 779                                 }\r
 780                                 M_PUSH( al );  /* rem */\r
 781                                 TOS = q;\r
 782                         }\r
 783                         endcase;\r
 784 \r
 785 /* Perform 64/32 bit divide for 64 bit result, using shift and subtract. */\r
 786                 case ID_D_MUSMOD:  /* MU/MOD ( al am bdiv -- rem ql qh ) */ \r
 787                         {\r
 788                                 register ucell ah,am,al,ql,qh,di;\r
 789 #define bdiv ((ucell)TOS)\r
 790                                 ah = 0;\r
 791                                 am = M_POP;\r
 792                                 al = M_POP;\r
 793                                 qh = ql = 0;\r
 794                                 for( di=0; di<64; di++ )\r
 795                                 {\r
 796                                         if( bdiv <= ah )\r
 797                                         {\r
 798                                                 ah = ah - bdiv;\r
 799                                                 ql |= 1;\r
 800                                         }\r
 801                                         qh = (qh << 1) | (ql >> 31);\r
 802                                         ql = ql << 1;\r
 803                                         ah = (ah << 1) | (am >> 31);\r
 804                                         am = (am << 1) | (al >> 31);\r
 805                                         al = al << 1;\r
 806 DBUG(("XX ah,m,l = 0x%8x,%8x,%8x - qh,l = 0x%8x,%8x\n", ah,am,al, qh,ql ));\r
 807                                 }\r
 808                                 if( bdiv <= ah )\r
 809                                 {\r
 810                                         ah = ah - bdiv;\r
 811                                         ql |= 1;\r
 812                                 }\r
 813                                 M_PUSH( ah ); /* rem */\r
 814                                 M_PUSH( ql );\r
 815                                 TOS = qh;\r
 816 #undef bdiv\r
 817                         }\r
 818                         endcase;\r
 819 \r
 820 #ifndef PF_NO_SHELL\r
 821                 case ID_DEFER:\r
 822                         ffDefer( );\r
 823                         endcase;\r
 824 #endif  /* !PF_NO_SHELL */\r
 825 \r
 826                 case ID_DEFER_P:\r
 827                         endcase;\r
 828 \r
 829                 case ID_DEPTH:\r
 830                         PUSH_TOS;\r
 831                         TOS = gCurrentTask->td_StackBase - STKPTR;\r
 832                         endcase;\r
 833                         \r
 834                 case ID_DIVIDE:     BINARY_OP( / ); endcase;\r
 835                         \r
 836                 case ID_DOT:\r
 837                         ffDot( TOS );\r
 838                         M_DROP;\r
 839                         endcase;\r
 840                         \r
 841                 case ID_DOTS:\r
 842                         M_DOTS;\r
 843                         endcase;\r
 844                         \r
 845                 case ID_DROP:  M_DROP; endcase;\r
 846                         \r
 847                 case ID_DUMP:\r
 848                         Scratch = M_POP;\r
 849                         DumpMemory( (char *) Scratch, TOS );\r
 850                         M_DROP;\r
 851                         endcase;\r
 852 \r
 853                 case ID_DUP:   M_DUP; endcase;\r
 854                 \r
 855                 case ID_DO_P: /* ( limit start -- ) ( R: -- start limit ) */\r
 856                         M_R_PUSH( TOS );\r
 857                         M_R_PUSH( M_POP );\r
 858                         M_DROP;\r
 859                         endcase;\r
 860                         \r
 861                 case ID_EOL:    /* ( -- end_of_line_char ) */\r
 862                         PUSH_TOS;\r
 863                         TOS = (cell) '\n';\r
 864                         endcase;\r
 865                         \r
 866                 case ID_ERRORQ_P:  /* ( flag num -- , quit if flag true ) */\r
 867                         Scratch = TOS;\r
 868                         M_DROP;\r
 869                         if(TOS)\r
 870                         {\r
 871                                 M_THROW(Scratch);\r
 872                         }\r
 873                         else\r
 874                         {\r
 875                                 M_DROP;\r
 876                         }\r
 877                         endcase;\r
 878                         \r
 879                 case ID_EMIT_P:\r
 880                         EMIT( (char) TOS );\r
 881                         M_DROP;\r
 882                         endcase;\r
 883                         \r
 884                 case ID_EXECUTE:\r
 885 /* Save IP on return stack like a JSR. */\r
 886                         M_R_PUSH( InsPtr );\r
 887 #ifdef PF_SUPPORT_TRACE\r
 888 /* Bump level for trace. */\r
 889                         Level++;\r
 890 #endif\r
 891                         if( IsTokenPrimitive( TOS ) )\r
 892                         {\r
 893                                 WRITE_LONG_DIC( (cell *) &FakeSecondary[0], TOS);   /* Build a fake secondary and execute it. */\r
 894                                 InsPtr = &FakeSecondary[0];\r
 895                         }\r
 896                         else\r
 897                         {\r
 898                                 InsPtr = (cell *) LOCAL_CODEREL_TO_ABS(TOS);\r
 899                         }\r
 900                         M_DROP;\r
 901                         endcase;\r
 902                         \r
 903                 case ID_FETCH:\r
 904 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
 905                         if( IN_DICS( TOS ) )\r
 906                         {\r
 907                                 TOS = (cell) READ_LONG_DIC((cell *)TOS);\r
 908                         }\r
 909                         else\r
 910                         {\r
 911                                 TOS = *((cell *)TOS);\r
 912                         }\r
 913 #else\r
 914                         TOS = *((cell *)TOS);\r
 915 #endif\r
 916                         endcase;\r
 917                 \r
 918                 case ID_FILE_CREATE: /* ( c-addr u fam -- fid ior ) */\r
 919 /* Build NUL terminated name string. */\r
 920                         Scratch = M_POP; /* u */\r
 921                         Temp = M_POP;    /* caddr */\r
 922                         if( Scratch < TIB_SIZE-2 )\r
 923                         {\r
 924                                 const char *famText = pfSelectFileModeCreate( TOS );\r
 925                                 pfCopyMemory( gScratch, (char *) Temp, (uint32) Scratch );\r
 926                                 gScratch[Scratch] = '\0';\r
 927                                 DBUG(("Create file = %s with famTxt %s\n", gScratch, famText ));\r
 928                                 FileID = sdOpenFile( gScratch, famText );\r
 929                                 TOS = ( FileID == NULL ) ? -1 : 0 ;\r
 930                                 M_PUSH( (cell) FileID );\r
 931                         }\r
 932                         else\r
 933                         {\r
 934                                 ERR("Filename too large for name buffer.\n");\r
 935                                 M_PUSH( 0 );\r
 936                                 TOS = -2;\r
 937                         }\r
 938                         endcase;\r
 939 \r
 940                 case ID_FILE_OPEN: /* ( c-addr u fam -- fid ior ) */\r
 941 /* Build NUL terminated name string. */\r
 942                         Scratch = M_POP; /* u */\r
 943                         Temp = M_POP;    /* caddr */\r
 944                         if( Scratch < TIB_SIZE-2 )\r
 945                         {\r
 946                                 const char *famText = pfSelectFileModeOpen( TOS );\r
 947                                 pfCopyMemory( gScratch, (char *) Temp, (uint32) Scratch );\r
 948                                 gScratch[Scratch] = '\0';\r
 949                                 DBUG(("Open file = %s\n", gScratch ));\r
 950                                 FileID = sdOpenFile( gScratch, famText );\r
 951 \r
 952                                 TOS = ( FileID == NULL ) ? -1 : 0 ;\r
 953                                 M_PUSH( (cell) FileID );\r
 954                         }\r
 955                         else\r
 956                         {\r
 957                                 ERR("Filename too large for name buffer.\n");\r
 958                                 M_PUSH( 0 );\r
 959                                 TOS = -2;\r
 960                         }\r
 961                         endcase;\r
 962                         \r
 963                 case ID_FILE_CLOSE: /* ( fid -- ior ) */\r
 964                         TOS = sdCloseFile( (FileStream *) TOS );\r
 965                         endcase;\r
 966                                 \r
 967                 case ID_FILE_READ: /* ( addr len fid -- u2 ior ) */\r
 968                         FileID = (FileStream *) TOS;\r
 969                         Scratch = M_POP;\r
 970                         CharPtr = (char *) M_POP;\r
 971                         Temp = sdReadFile( CharPtr, 1, Scratch, FileID );\r
 972                         M_PUSH(Temp);\r
 973                         TOS = 0;\r
 974                         endcase;\r
 975                                 \r
 976                 case ID_FILE_SIZE: /* ( fid -- ud ior ) */\r
 977 /* Determine file size by seeking to end and returning position. */\r
 978                         FileID = (FileStream *) TOS;\r
 979                         Scratch = sdTellFile( FileID );\r
 980                         sdSeekFile( FileID, 0, PF_SEEK_END );\r
 981                         M_PUSH( sdTellFile( FileID ));\r
 982                         sdSeekFile( FileID, Scratch, PF_SEEK_SET );\r
 983                         TOS = (Scratch < 0) ? -4 : 0 ; /* !!! err num */\r
 984                         endcase;\r
 985 \r
 986                 case ID_FILE_WRITE: /* ( addr len fid -- ior ) */\r
 987                         FileID = (FileStream *) TOS;\r
 988                         Scratch = M_POP;\r
 989                         CharPtr = (char *) M_POP;\r
 990                         Temp = sdWriteFile( CharPtr, 1, Scratch, FileID );\r
 991                         TOS = (Temp != Scratch) ? -3 : 0;\r
 992                         endcase;\r
 993 \r
 994                 case ID_FILE_REPOSITION: /* ( pos fid -- ior ) */\r
 995                         FileID = (FileStream *) TOS;\r
 996                         Scratch = M_POP;\r
 997                         TOS = sdSeekFile( FileID, Scratch, PF_SEEK_SET );\r
 998                         endcase;\r
 999 \r
1000                 case ID_FILE_POSITION: /* ( pos fid -- ior ) */\r
1001                         M_PUSH( sdTellFile( (FileStream *) TOS ));\r
1002                         TOS = 0;\r
1003                         endcase;\r
1004 \r
1005                 case ID_FILE_RO: /* (  -- fam ) */\r
1006                         PUSH_TOS;\r
1007                         TOS = PF_FAM_READ_ONLY;\r
1008                         endcase;\r
1009                                 \r
1010                 case ID_FILE_RW: /* ( -- fam ) */\r
1011                         PUSH_TOS;\r
1012                         TOS = PF_FAM_READ_WRITE;\r
1013                         endcase;\r
1014 \r
1015                 case ID_FILE_WO: /* ( -- fam ) */\r
1016                         PUSH_TOS;\r
1017                         TOS = PF_FAM_WRITE_ONLY;\r
1018                         endcase;\r
1019 \r
1020                 case ID_FILE_BIN: /* ( -- fam ) */\r
1021                         TOS = TOS | PF_FAM_BINARY_FLAG;\r
1022                         endcase;\r
1023                                 \r
1024                 case ID_FILL: /* ( caddr num charval -- ) */\r
1025                         {\r
1026                                 register char *DstPtr;\r
1027                                 Temp = M_POP;    /* num */\r
1028                                 DstPtr = (char *) M_POP; /* dst */\r
1029                                 for( Scratch=0; (uint32) Scratch < (uint32) Temp ; Scratch++ )\r
1030                                 {\r
1031                                         *DstPtr++ = (char) TOS;\r
1032                                 }\r
1033                                 M_DROP;\r
1034                         }\r
1035                         endcase;\r
1036                         \r
1037 #ifndef PF_NO_SHELL\r
1038                 case ID_FIND:  /* ( $addr -- $addr 0 | xt +-1 ) */\r
1039                         TOS = ffFind( (char *) TOS, (ExecToken *) &Temp );\r
1040                         M_PUSH( Temp );\r
1041                         endcase;\r
1042                         \r
1043                 case ID_FINDNFA:\r
1044                         TOS = ffFindNFA( (const ForthString *) TOS, (const ForthString **) &Temp );\r
1045                         M_PUSH( (cell) Temp );\r
1046                         endcase;\r
1047 #endif  /* !PF_NO_SHELL */\r
1048 \r
1049                 case ID_FLUSHEMIT:\r
1050                         sdTerminalFlush();\r
1051                         endcase;\r
1052                         \r
1053 /* Validate memory before freeing. Clobber validator and first word. */\r
1054                 case ID_FREE:   /* ( addr -- result ) */\r
1055                         if( TOS == 0 )\r
1056                         {\r
1057                                 ERR("FREE passed NULL!\n");\r
1058                                 TOS = -2; /* FIXME error code */\r
1059                         }\r
1060                         else\r
1061                         {\r
1062                                 CellPtr = (cell *) TOS;\r
1063                                 CellPtr--;\r
1064                                 if( ((uint32)*CellPtr) != ((uint32)CellPtr ^ PF_MEMORY_VALIDATOR))\r
1065                                 {\r
1066                                         TOS = -2; /* FIXME error code */\r
1067                                 }\r
1068                                 else\r
1069                                 {\r
1070                                         CellPtr[0] = 0xDeadBeef;\r
1071                                         pfFreeMem((char *)CellPtr);\r
1072                                         TOS = 0;\r
1073                                 }\r
1074                         }\r
1075                         endcase;\r
1076                         \r
1077 #include "pfinnrfp.h"\r
1078 \r
1079                 case ID_HERE:\r
1080                         PUSH_TOS;\r
1081                         TOS = (cell)CODE_HERE;\r
1082                         endcase;\r
1083                 \r
1084                 case ID_NUMBERQ_P:   /* ( addr -- 0 | n 1 ) */\r
1085 /* Convert using number converter in 'C'.\r
1086 ** Only supports single precision for bootstrap.\r
1087 */\r
1088                         TOS = (cell) ffNumberQ( (char *) TOS, &Temp );\r
1089                         if( TOS == NUM_TYPE_SINGLE)\r
1090                         {\r
1091                                 M_PUSH( Temp );   /* Push single number */\r
1092                         }\r
1093                         endcase;\r
1094                         \r
1095                 case ID_I:  /* ( -- i , DO LOOP index ) */\r
1096                         PUSH_TOS;\r
1097                         TOS = M_R_PICK(1);\r
1098                         endcase;\r
1099 \r
1100 #ifndef PF_NO_SHELL\r
1101                 case ID_INCLUDE_FILE:\r
1102                         FileID = (FileStream *) TOS;\r
1103                         M_DROP;    /* Drop now so that INCLUDE has a clean stack. */\r
1104                         SAVE_REGISTERS;\r
1105                         Scratch = ffIncludeFile( FileID );\r
1106                         LOAD_REGISTERS;\r
1107                         if( Scratch ) M_THROW(Scratch)\r
1108                         endcase;\r
1109 #endif  /* !PF_NO_SHELL */\r
1110                         \r
1111 #ifndef PF_NO_SHELL\r
1112                 case ID_INTERPRET:\r
1113                         SAVE_REGISTERS;\r
1114                         Scratch = ffInterpret();\r
1115                         LOAD_REGISTERS;\r
1116                         if( Scratch ) M_THROW(Scratch)\r
1117                         endcase;\r
1118 #endif  /* !PF_NO_SHELL */\r
1119 \r
1120                 case ID_J:  /* ( -- j , second DO LOOP index ) */\r
1121                         PUSH_TOS;\r
1122                         TOS = M_R_PICK(3);\r
1123                         endcase;\r
1124 \r
1125                 case ID_KEY:\r
1126                         PUSH_TOS;\r
1127                         TOS = ioKey();\r
1128                         endcase;\r
1129                         \r
1130 #ifndef PF_NO_SHELL\r
1131                 case ID_LITERAL:\r
1132                         ffLiteral( TOS );\r
1133                         M_DROP;\r
1134                         endcase;\r
1135 #endif /* !PF_NO_SHELL */\r
1136 \r
1137                 case ID_LITERAL_P:\r
1138                         DBUG(("ID_LITERAL_P: InsPtr = 0x%x, *InsPtr = 0x%x\n", InsPtr, *InsPtr ));\r
1139                         PUSH_TOS;\r
1140                         TOS = READ_LONG_DIC(InsPtr++);\r
1141                         endcase;\r
1142         \r
1143 #ifndef PF_NO_SHELL\r
1144                 case ID_LOCAL_COMPILER: DO_VAR(gLocalCompiler_XT); endcase;\r
1145 #endif /* !PF_NO_SHELL */\r
1146 \r
1147                 case ID_LOCAL_FETCH: /* ( i <local> -- n , fetch from local ) */\r
1148                         TOS = *(LocalsPtr - TOS);\r
1149                         endcase;\r
1150 \r
1151 #define LOCAL_FETCH_N(num) \\r
1152                 case ID_LOCAL_FETCH_##num: /* ( <local> -- n , fetch from local ) */ \\r
1153                         PUSH_TOS; \\r
1154                         TOS = *(LocalsPtr -(num)); \\r
1155                         endcase;\r
1156 \r
1157                 LOCAL_FETCH_N(1);\r
1158                 LOCAL_FETCH_N(2);\r
1159                 LOCAL_FETCH_N(3);\r
1160                 LOCAL_FETCH_N(4);\r
1161                 LOCAL_FETCH_N(5);\r
1162                 LOCAL_FETCH_N(6);\r
1163                 LOCAL_FETCH_N(7);\r
1164                 LOCAL_FETCH_N(8);\r
1165                 \r
1166                 case ID_LOCAL_STORE:  /* ( n i <local> -- , store n in local ) */\r
1167                         *(LocalsPtr - TOS) = M_POP;\r
1168                         M_DROP;\r
1169                         endcase;\r
1170 \r
1171 #define LOCAL_STORE_N(num) \\r
1172                 case ID_LOCAL_STORE_##num:  /* ( n <local> -- , store n in local ) */ \\r
1173                         *(LocalsPtr - (num)) = TOS; \\r
1174                         M_DROP; \\r
1175                         endcase;\r
1176 \r
1177                 LOCAL_STORE_N(1);\r
1178                 LOCAL_STORE_N(2);\r
1179                 LOCAL_STORE_N(3);\r
1180                 LOCAL_STORE_N(4);\r
1181                 LOCAL_STORE_N(5);\r
1182                 LOCAL_STORE_N(6);\r
1183                 LOCAL_STORE_N(7);\r
1184                 LOCAL_STORE_N(8);\r
1185                 \r
1186                 case ID_LOCAL_PLUSSTORE:  /* ( n i <local> -- , add n to local ) */\r
1187                         *(LocalsPtr - TOS) += M_POP;\r
1188                         M_DROP;\r
1189                         endcase;\r
1190                         \r
1191                 case ID_LOCAL_ENTRY: /* ( x0 x1 ... xn n -- ) */\r
1192                 /* create local stack frame */\r
1193                         {\r
1194                                 int32 i = TOS;\r
1195                                 cell *lp;\r
1196                                 DBUG(("LocalEntry: n = %d\n", TOS));\r
1197                                 /* End of locals. Create stack frame */\r
1198                                 DBUG(("LocalEntry: before RP@ = 0x%x, LP = 0x%x\n",\r
1199                                         TORPTR, LocalsPtr));\r
1200                                 M_R_PUSH(LocalsPtr);\r
1201                                 LocalsPtr = TORPTR;\r
1202                                 TORPTR -= TOS;\r
1203                                 DBUG(("LocalEntry: after RP@ = 0x%x, LP = 0x%x\n",\r
1204                                         TORPTR, LocalsPtr));\r
1205                                 lp = TORPTR;\r
1206                                 while(i-- > 0)\r
1207                                 {\r
1208                                         *lp++ = M_POP;    /* Load local vars from stack */\r
1209                                 }\r
1210                                 M_DROP;\r
1211                         }\r
1212                         endcase;\r
1213 \r
1214                 case ID_LOCAL_EXIT: /* cleanup up local stack frame */\r
1215                         DBUG(("LocalExit: before RP@ = 0x%x, LP = 0x%x\n",\r
1216                                 TORPTR, LocalsPtr));\r
1217                         TORPTR = LocalsPtr;\r
1218                         LocalsPtr = (cell *) M_R_POP;\r
1219                         DBUG(("LocalExit: after RP@ = 0x%x, LP = 0x%x\n",\r
1220                                 TORPTR, LocalsPtr));\r
1221                         endcase;\r
1222                         \r
1223 #ifndef PF_NO_SHELL\r
1224                 case ID_LOADSYS:\r
1225                         MSG("Load "); MSG(SYSTEM_LOAD_FILE); EMIT_CR;\r
1226                         FileID = sdOpenFile(SYSTEM_LOAD_FILE, "r");\r
1227                         if( FileID )\r
1228                         {\r
1229                                 SAVE_REGISTERS;\r
1230                                 Scratch = ffIncludeFile( FileID );\r
1231                                 LOAD_REGISTERS;\r
1232                                 sdCloseFile( FileID );\r
1233                                 if( Scratch ) M_THROW(Scratch);\r
1234                         }\r
1235                         else\r
1236                         {\r
1237                                  ERR(SYSTEM_LOAD_FILE); ERR(" could not be opened!\n");\r
1238                         }\r
1239                         endcase;\r
1240 #endif  /* !PF_NO_SHELL */\r
1241 \r
1242                 case ID_LEAVE_P: /* ( R: index limit --  ) */\r
1243                         M_R_DROP;\r
1244                         M_R_DROP;\r
1245                         M_BRANCH;\r
1246                         endcase;\r
1247 \r
1248                 case ID_LOOP_P: /* ( R: index limit -- | index limit ) */\r
1249                         Temp = M_R_POP; /* limit */\r
1250                         Scratch = M_R_POP + 1; /* index */\r
1251                         if( Scratch == Temp )\r
1252                         {\r
1253                                 InsPtr++;   /* skip branch offset, exit loop */\r
1254                         }\r
1255                         else\r
1256                         {\r
1257 /* Push index and limit back to R */\r
1258                                 M_R_PUSH( Scratch );\r
1259                                 M_R_PUSH( Temp );\r
1260 /* Branch back to just after (DO) */\r
1261                                 M_BRANCH;\r
1262                         }\r
1263                         endcase;\r
1264                                 \r
1265                 case ID_LSHIFT:     BINARY_OP( << ); endcase;\r
1266                 \r
1267                 case ID_MAX:\r
1268                         Scratch = M_POP;\r
1269                         TOS = ( TOS > Scratch ) ? TOS : Scratch ;\r
1270                         endcase;\r
1271                         \r
1272                 case ID_MIN:\r
1273                         Scratch = M_POP;\r
1274                         TOS = ( TOS < Scratch ) ? TOS : Scratch ;\r
1275                         endcase;\r
1276                         \r
1277                 case ID_MINUS:     BINARY_OP( - ); endcase;\r
1278                         \r
1279 #ifndef PF_NO_SHELL\r
1280                 case ID_NAME_TO_TOKEN:\r
1281                         TOS = (cell) NameToToken((ForthString *)TOS);\r
1282                         endcase;\r
1283                         \r
1284                 case ID_NAME_TO_PREVIOUS:\r
1285                         TOS = (cell) NameToPrevious((ForthString *)TOS);\r
1286                         endcase;\r
1287 #endif\r
1288                         \r
1289                 case ID_NOOP:\r
1290                         endcase;\r
1291                         \r
1292                 case ID_OR:     BINARY_OP( | ); endcase;\r
1293                 \r
1294                 case ID_OVER:\r
1295                         PUSH_TOS;\r
1296                         TOS = M_STACK(1);\r
1297                         endcase;\r
1298                         \r
1299                 case ID_PICK: /* ( ... n -- sp(n) ) */\r
1300                         TOS = M_STACK(TOS);\r
1301                         endcase;\r
1302 \r
1303                 case ID_PLUS:     BINARY_OP( + ); endcase;\r
1304                 \r
1305                 case ID_PLUS_STORE:   /* ( n addr -- , add n to *addr ) */\r
1306 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
1307                         if( IN_DICS( TOS ) )\r
1308                         {\r
1309                                 Scratch = READ_LONG_DIC((cell *)TOS);\r
1310                                 Scratch += M_POP;\r
1311                                 WRITE_LONG_DIC((cell *)TOS,Scratch);\r
1312                         }\r
1313                         else\r
1314                         {\r
1315                                 *((cell *)TOS) += M_POP;\r
1316                         }\r
1317 #else\r
1318                         *((cell *)TOS) += M_POP;\r
1319 #endif\r
1320                         M_DROP;\r
1321                         endcase;\r
1322 \r
1323                 case ID_PLUSLOOP_P: /* ( delta -- ) ( R: index limit -- | index limit ) */\r
1324                         {\r
1325                                 ucell OldIndex, NewIndex, Limit;\r
1326 \r
1327                                 Limit = M_R_POP;\r
1328                                 OldIndex = M_R_POP;\r
1329                                 NewIndex = OldIndex + TOS; /* add TOS to index, not 1 */\r
1330 /* Do indices cross boundary between LIMIT-1 and LIMIT ? */\r
1331                                 if( ( (OldIndex - Limit) & ((Limit-1) - NewIndex) & 0x80000000 ) ||\r
1332                                     ( (NewIndex - Limit) & ((Limit-1) - OldIndex) & 0x80000000 ) )\r
1333                                 {\r
1334                                         InsPtr++;   /* skip branch offset, exit loop */\r
1335                                 }\r
1336                                 else\r
1337                                 {\r
1338 /* Push index and limit back to R */\r
1339                                         M_R_PUSH( NewIndex );\r
1340                                         M_R_PUSH( Limit );\r
1341 /* Branch back to just after (DO) */\r
1342                                         M_BRANCH;\r
1343                                 }\r
1344                                 M_DROP;\r
1345                         }\r
1346                         endcase;\r
1347 \r
1348                 case ID_QDO_P: /* (?DO) ( limit start -- ) ( R: -- start limit ) */\r
1349                         Scratch = M_POP;  /* limit */\r
1350                         if( Scratch == TOS )\r
1351                         {\r
1352 /* Branch to just after (LOOP) */\r
1353                                 M_BRANCH;\r
1354                         }\r
1355                         else\r
1356                         {\r
1357                                 M_R_PUSH( TOS );\r
1358                                 M_R_PUSH( Scratch );\r
1359                                 InsPtr++;   /* skip branch offset, enter loop */\r
1360                         }\r
1361                         M_DROP;\r
1362                         endcase;\r
1363 \r
1364                 case ID_QDUP:     if( TOS ) M_DUP; endcase;\r
1365 \r
1366                 case ID_QTERMINAL:  /* WARNING: Typically not fully implemented! */\r
1367                         PUSH_TOS;\r
1368                         TOS = sdQueryTerminal();\r
1369                         endcase;\r
1370                 \r
1371                 case ID_QUIT_P: /* Stop inner interpreter, go back to user. */\r
1372 #ifdef PF_SUPPORT_TRACE\r
1373                         Level = 0;\r
1374 #endif\r
1375                         M_THROW(THROW_QUIT);\r
1376                         endcase;\r
1377                         \r
1378                 case ID_R_DROP:\r
1379                         M_R_DROP;\r
1380                         endcase;\r
1381 \r
1382                 case ID_R_FETCH:\r
1383                         PUSH_TOS;\r
1384                         TOS = (*(TORPTR));\r
1385                         endcase;\r
1386                 \r
1387                 case ID_R_FROM:\r
1388                         PUSH_TOS;\r
1389                         TOS = M_R_POP;\r
1390                         endcase;\r
1391                         \r
1392                 case ID_REFILL:\r
1393                         PUSH_TOS;\r
1394                         TOS = (ffRefill() > 0) ? FTRUE : FFALSE;\r
1395                         endcase;\r
1396                         \r
1397 /* Resize memory allocated by ALLOCATE. */\r
1398                 case ID_RESIZE:  /* ( addr1 u -- addr2 result ) */\r
1399                         {\r
1400                                 cell *Addr1 = (cell *) M_POP;\r
1401                                 // Point to validator below users address.\r
1402                                 cell *FreePtr = Addr1 - 1;\r
1403                                 if( ((uint32)*FreePtr) != ((uint32)FreePtr ^ PF_MEMORY_VALIDATOR))\r
1404                                 {\r
1405                                         // 090218 - Fixed bug, was returning zero.\r
1406                                         M_PUSH( Addr1 );\r
1407                                         TOS = -3;\r
1408                                 }\r
1409                                 else\r
1410                                 {\r
1411                                         /* Try to allocate. */\r
1412                                         CellPtr = (cell *) pfAllocMem( TOS + sizeof(cell) );\r
1413                                         if( CellPtr )\r
1414                                         {\r
1415                                                 /* Copy memory including validation. */\r
1416                                                 pfCopyMemory( (char *) CellPtr, (char *) FreePtr, TOS + sizeof(cell) );\r
1417                                                 *CellPtr = (cell)(((uint32)CellPtr) ^ (uint32)PF_MEMORY_VALIDATOR);\r
1418                                                 // 090218 - Fixed bug that was incrementing the address twice. Thanks Reinhold Straub.\r
1419                                                 // Increment past validator to user address.\r
1420                                     M_PUSH( (cell) (CellPtr + 1) );\r
1421                                                 TOS = 0; // Result code.\r
1422                                                 // Mark old cell as dead so we can't free it twice.\r
1423                                                 FreePtr[0] = 0xDeadBeef;\r
1424                                                 pfFreeMem((char *) FreePtr);\r
1425                                         }\r
1426                                         else\r
1427                                         {\r
1428                                                 // 090218 - Fixed bug, was returning zero.\r
1429                                                 M_PUSH( Addr1 );\r
1430                                                 TOS = -4;  /* FIXME Fix error code. */\r
1431                                         }\r
1432                                 }\r
1433                         }\r
1434                         endcase;\r
1435                                 \r
1436 /*\r
1437 ** RP@ and RP! are called secondaries so we must\r
1438 ** account for the return address pushed before calling.\r
1439 */\r
1440                 case ID_RP_FETCH:    /* ( -- rp , address of top of return stack ) */\r
1441                         PUSH_TOS;\r
1442                         TOS = (cell)TORPTR;  /* value before calling RP@ */\r
1443                         endcase;\r
1444                         \r
1445                 case ID_RP_STORE:    /* ( rp -- , address of top of return stack ) */\r
1446                         TORPTR = (cell *) TOS;\r
1447                         M_DROP;\r
1448                         endcase;\r
1449                         \r
1450                 case ID_ROLL: /* ( xu xu-1 xu-1 ... x0 u -- xu-1 xu-1 ... x0 xu ) */\r
1451                         {\r
1452                                 int32 ri;\r
1453                                 cell *srcPtr, *dstPtr;\r
1454                                 Scratch = M_STACK(TOS);\r
1455                                 srcPtr = &M_STACK(TOS-1);\r
1456                                 dstPtr = &M_STACK(TOS);\r
1457                                 for( ri=0; ri<TOS; ri++ )\r
1458                                 {\r
1459                                         *dstPtr-- = *srcPtr--;\r
1460                                 }\r
1461                                 TOS = Scratch;\r
1462                                 STKPTR++;\r
1463                         }\r
1464                         endcase;\r
1465 \r
1466                 case ID_ROT:  /* ( a b c -- b c a ) */\r
1467                         Scratch = M_POP;    /* b */\r
1468                         Temp = M_POP;       /* a */\r
1469                         M_PUSH( Scratch );  /* b */\r
1470                         PUSH_TOS;           /* c */\r
1471                         TOS = Temp;         /* a */\r
1472                         endcase;\r
1473 \r
1474 /* Logical right shift */\r
1475                 case ID_RSHIFT:     { TOS = ((uint32)M_POP) >> TOS; } endcase;   \r
1476                 \r
1477 #ifndef PF_NO_SHELL\r
1478                 case ID_SAVE_FORTH_P:   /* ( $name Entry NameSize CodeSize -- err ) */\r
1479                         {\r
1480                                 int32 NameSize, CodeSize, EntryPoint;\r
1481                                 CodeSize = TOS;\r
1482                                 NameSize = M_POP;\r
1483                                 EntryPoint = M_POP;\r
1484                                 ForthStringToC( gScratch, (char *) M_POP );\r
1485                                 TOS =  ffSaveForth( gScratch, EntryPoint, NameSize, CodeSize );\r
1486                         }\r
1487                         endcase;\r
1488 #endif\r
1489 \r
1490 /* Source     Stack\r
1491 ** EVALUATE    >IN  SourceID=(-1)  1111\r
1492 ** keyboard    >IN  SourceID=(0)   2222\r
1493 ** file        >IN  lineNumber filePos  SourceID=(fileID)\r
1494 */\r
1495                 case ID_SAVE_INPUT:  /* FIXME - finish */\r
1496                         {\r
1497                         }\r
1498                         endcase;\r
1499 \r
1500                 case ID_SP_FETCH:    /* ( -- sp , address of top of stack, sorta ) */\r
1501                         PUSH_TOS;\r
1502                         TOS = (cell)STKPTR;\r
1503                         endcase;\r
1504                         \r
1505                 case ID_SP_STORE:    /* ( sp -- , address of top of stack, sorta ) */\r
1506                         STKPTR = (cell *) TOS;\r
1507                         M_DROP;\r
1508                         endcase;\r
1509                         \r
1510                 case ID_STORE: /* ( n addr -- , write n to addr ) */\r
1511 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
1512                         if( IN_DICS( TOS ) )\r
1513                         {\r
1514                                 WRITE_LONG_DIC((cell *)TOS,M_POP);\r
1515                         }\r
1516                         else\r
1517                         {\r
1518                                 *((cell *)TOS) = M_POP;\r
1519                         }\r
1520 #else\r
1521                         *((cell *)TOS) = M_POP;\r
1522 #endif\r
1523                         M_DROP;\r
1524                         endcase;\r
1525 \r
1526                 case ID_SCAN: /* ( addr cnt char -- addr' cnt' ) */\r
1527                         Scratch = M_POP; /* cnt */\r
1528                         Temp = M_POP;    /* addr */\r
1529                         TOS = ffScan( (char *) Temp, Scratch, (char) TOS, &CharPtr );\r
1530                         M_PUSH((cell) CharPtr);\r
1531                         endcase;\r
1532                         \r
1533 #ifndef PF_NO_SHELL\r
1534                 case ID_SEMICOLON:\r
1535                         SAVE_REGISTERS;\r
1536                         Scratch = ffSemiColon();\r
1537                         LOAD_REGISTERS;\r
1538                         if( Scratch ) M_THROW( Scratch );\r
1539                         endcase;\r
1540 #endif /* !PF_NO_SHELL */\r
1541                         \r
1542                 case ID_SKIP: /* ( addr cnt char -- addr' cnt' ) */\r
1543                         Scratch = M_POP; /* cnt */\r
1544                         Temp = M_POP;    /* addr */\r
1545                         TOS = ffSkip( (char *) Temp, Scratch, (char) TOS, &CharPtr );\r
1546                         M_PUSH((cell) CharPtr);\r
1547                         endcase;\r
1548 \r
1549                 case ID_SOURCE:  /* ( -- c-addr num ) */\r
1550                         PUSH_TOS;\r
1551                         M_PUSH( (cell) gCurrentTask->td_SourcePtr );\r
1552                         TOS = (cell) gCurrentTask->td_SourceNum;\r
1553                         endcase;\r
1554                         \r
1555                 case ID_SOURCE_SET: /* ( c-addr num -- ) */\r
1556                         gCurrentTask->td_SourcePtr = (char *) M_POP;\r
1557                         gCurrentTask->td_SourceNum = TOS;\r
1558                         M_DROP;\r
1559                         endcase;\r
1560                         \r
1561                 case ID_SOURCE_ID:\r
1562                         PUSH_TOS;\r
1563                         TOS = ffConvertStreamToSourceID( gCurrentTask->td_InputStream ) ;\r
1564                         endcase;\r
1565                         \r
1566                 case ID_SOURCE_ID_POP:\r
1567                         PUSH_TOS;\r
1568                         TOS = ffConvertStreamToSourceID( ffPopInputStream() ) ;\r
1569                         endcase;\r
1570                         \r
1571                 case ID_SOURCE_ID_PUSH:  /* ( source-id -- ) */\r
1572                         TOS = (cell)ffConvertSourceIDToStream( TOS );\r
1573                         Scratch = ffPushInputStream((FileStream *) TOS );\r
1574                         if( Scratch )\r
1575                         {\r
1576                                 M_THROW(Scratch);\r
1577                         }\r
1578                         else M_DROP;\r
1579                         endcase;\r
1580                         \r
1581                 case ID_SWAP:\r
1582                         Scratch = TOS;\r
1583                         TOS = *STKPTR;\r
1584                         *STKPTR = Scratch;\r
1585                         endcase;\r
1586                         \r
1587                 case ID_TEST1:\r
1588                         PUSH_TOS;\r
1589                         M_PUSH( 0x11 );\r
1590                         M_PUSH( 0x22 );\r
1591                         TOS = 0x33;\r
1592                         endcase;\r
1593 \r
1594                 case ID_TEST2:\r
1595                         endcase;\r
1596 \r
1597                 case ID_THROW:  /* ( k*x err -- k*x | i*x err , jump to where CATCH was called ) */\r
1598                         if(TOS)\r
1599                         {\r
1600                                 M_THROW(TOS);\r
1601                         }\r
1602                         else M_DROP;\r
1603                         endcase;\r
1604 \r
1605 #ifndef PF_NO_SHELL\r
1606                 case ID_TICK:\r
1607                         PUSH_TOS;\r
1608                         CharPtr = (char *) ffWord( (char) ' ' );\r
1609                         TOS = ffFind( CharPtr, (ExecToken *) &Temp );\r
1610                         if( TOS == 0 )\r
1611                         {\r
1612                                 ERR("' could not find ");\r
1613                                 ioType( (char *) CharPtr+1, *CharPtr );\r
1614                                 M_THROW(-13);\r
1615                         }\r
1616                         else\r
1617                         {\r
1618                                 TOS = Temp;\r
1619                         }\r
1620                         endcase;\r
1621 #endif  /* !PF_NO_SHELL */\r
1622                         \r
1623                 case ID_TIMES: BINARY_OP( * ); endcase;\r
1624                         \r
1625                 case ID_TYPE:\r
1626                         Scratch = M_POP; /* addr */\r
1627                         ioType( (char *) Scratch, TOS );\r
1628                         M_DROP;\r
1629                         endcase;\r
1630 \r
1631                 case ID_TO_R:\r
1632                         M_R_PUSH( TOS );\r
1633                         M_DROP;\r
1634                         endcase;\r
1635 \r
1636                 case ID_VAR_BASE: DO_VAR(gVarBase); endcase;\r
1637                 case ID_VAR_CODE_BASE: DO_VAR(gCurrentDictionary->dic_CodeBase); endcase;\r
1638                 case ID_VAR_CODE_LIMIT: DO_VAR(gCurrentDictionary->dic_CodeLimit); endcase;\r
1639                 case ID_VAR_CONTEXT: DO_VAR(gVarContext); endcase;\r
1640                 case ID_VAR_DP: DO_VAR(gCurrentDictionary->dic_CodePtr.Cell); endcase;\r
1641                 case ID_VAR_ECHO: DO_VAR(gVarEcho); endcase;\r
1642                 case ID_VAR_HEADERS_BASE: DO_VAR(gCurrentDictionary->dic_HeaderBase); endcase;\r
1643                 case ID_VAR_HEADERS_LIMIT: DO_VAR(gCurrentDictionary->dic_HeaderLimit); endcase;\r
1644                 case ID_VAR_HEADERS_PTR: DO_VAR(gCurrentDictionary->dic_HeaderPtr.Cell); endcase;\r
1645                 case ID_VAR_NUM_TIB: DO_VAR(gCurrentTask->td_SourceNum); endcase;\r
1646                 case ID_VAR_OUT: DO_VAR(gCurrentTask->td_OUT); endcase;\r
1647                 case ID_VAR_STATE: DO_VAR(gVarState); endcase;\r
1648                 case ID_VAR_TO_IN: DO_VAR(gCurrentTask->td_IN); endcase;\r
1649                 case ID_VAR_TRACE_FLAGS: DO_VAR(gVarTraceFlags); endcase;\r
1650                 case ID_VAR_TRACE_LEVEL: DO_VAR(gVarTraceLevel); endcase;\r
1651                 case ID_VAR_TRACE_STACK: DO_VAR(gVarTraceStack); endcase;\r
1652                 case ID_VAR_RETURN_CODE: DO_VAR(gVarReturnCode); endcase;\r
1653 \r
1654                 case ID_WORD:\r
1655                         TOS = (cell) ffWord( (char) TOS );\r
1656                         endcase;\r
1657 \r
1658                 case ID_WORD_FETCH: /* ( waddr -- w ) */\r
1659 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
1660                         if( IN_DICS( TOS ) )\r
1661                         {\r
1662                                 TOS = (uint16) READ_SHORT_DIC((uint16 *)TOS);\r
1663                         }\r
1664                         else\r
1665                         {\r
1666                                 TOS = *((uint16 *)TOS);\r
1667                         }\r
1668 #else\r
1669                         TOS = *((uint16 *)TOS);\r
1670 #endif\r
1671                         endcase;\r
1672 \r
1673                 case ID_WORD_STORE: /* ( w waddr -- ) */\r
1674                         \r
1675 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
1676                         if( IN_DICS( TOS ) )\r
1677                         {\r
1678                                 WRITE_SHORT_DIC((uint16 *)TOS,(uint16)M_POP);\r
1679                         }\r
1680                         else\r
1681                         {\r
1682                                 *((uint16 *)TOS) = (uint16) M_POP;\r
1683                         }\r
1684 #else\r
1685                         *((uint16 *)TOS) = (uint16) M_POP;\r
1686 #endif\r
1687                         M_DROP;\r
1688                         endcase;\r
1689 \r
1690                 case ID_XOR: BINARY_OP( ^ ); endcase;\r
1691                                 \r
1692                                 \r
1693 /* Branch is followed by an offset relative to address of offset. */\r
1694                 case ID_ZERO_BRANCH:\r
1695 DBUGX(("Before 0Branch: IP = 0x%x\n", InsPtr ));\r
1696                         if( TOS == 0 )\r
1697                         {\r
1698                                 M_BRANCH;\r
1699                         }\r
1700                         else\r
1701                         {\r
1702                                 InsPtr++;      /* skip over offset */\r
1703                         }\r
1704                         M_DROP;\r
1705 DBUGX(("After 0Branch: IP = 0x%x\n", InsPtr ));\r
1706                         endcase;\r
1707                         \r
1708                 default:\r
1709                         ERR("pfCatch: Unrecognised token = 0x");\r
1710                         ffDotHex(Token);\r
1711                         ERR(" at 0x");\r
1712                         ffDotHex((int32) InsPtr);\r
1713                         EMIT_CR;\r
1714                         InsPtr = 0;\r
1715                         endcase;\r
1716                 }\r
1717                 \r
1718                 if(InsPtr) Token = READ_LONG_DIC(InsPtr++);   /* Traverse to next token in secondary. */\r
1719                 \r
1720 #ifdef PF_DEBUG\r
1721                 M_DOTS;\r
1722 #endif\r
1723 \r
1724 #if 0\r
1725                 if( _CrtCheckMemory() == 0 )\r
1726                 {\r
1727                         ERR("_CrtCheckMemory abort: InsPtr = 0x");\r
1728                         ffDotHex((int)InsPtr);\r
1729                         ERR("\n");\r
1730                 }\r
1731 #endif\r
1732 \r
1733         } while( (InitialReturnStack - TORPTR) > 0 );\r
1734 \r
1735         SAVE_REGISTERS;\r
1736         \r
1737         return ExceptionReturnCode;\r
1738 }\r