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   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_t) (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_t) (n);}\r
  78 \r
  79 /***************************************************************\r
  80 ** Misc Forth macros\r
  81 ***************************************************************/\r
  82                         \r
  83 #define M_BRANCH   { InsPtr = (cell_t *) (((uint8_t *) InsPtr) + READ_CELL_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_t) &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, cell_t Level )\r
 158 {\r
 159         char *DebugName;\r
 160         cell_t i;\r
 161         \r
 162         if( ffTokenToName( Token, &DebugName ) )\r
 163         {\r
 164                 cell_t 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_t *) (((cell_t) 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_t  TopOfStack;    /* Cache for faster execution. */\r
 257         register cell_t *DataStackPtr;\r
 258         register cell_t *ReturnStackPtr;\r
 259         register cell_t *InsPtr = NULL;\r
 260         register cell_t  Token;\r
 261         cell_t           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         cell_t Level = 0;\r
 272 #endif\r
 273         cell_t        *LocalsPtr = NULL;\r
 274         cell_t         Temp;\r
 275         cell_t        *InitialReturnStack;\r
 276         cell_t        *InitialDataStack;\r
 277         cell_t         FakeSecondary[2];\r
 278         char          *CharPtr;\r
 279         cell_t        *CellPtr;\r
 280         FileStream    *FileID;\r
 281         uint8_t       *CodeBase = (uint8_t *) 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_t *) ( LOCAL_CODEREL_TO_ABS(Token) );\r
 331 \r
 332 /* Fetch token at IP. */\r
 333                         Token = READ_CELL_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_t *) 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_CELL_DIC(InsPtr++);\r
 375                         M_PUSH(READ_CELL_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_t) LOCAL_CODEREL_TO_ABS( READ_CELL_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_t) )\r
 445                         {\r
 446                                 Temp = sizeof(cell_t);\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_t *) pfAllocMem( Temp + sizeof(cell_t) );\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 = (cell_t)CellPtr ^ PF_MEMORY_VALIDATOR;\r
 459                                 *CellPtr++ = Temp;\r
 460                                 M_PUSH( (cell_t) 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_CELL_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                 /* Support 32/64 bit operation. */\r
 515                 case ID_CELL:\r
 516                                 M_PUSH( TOS );\r
 517                                 TOS = sizeof(cell_t);\r
 518                                 endcase;\r
 519                                 \r
 520                 case ID_CELLS:\r
 521                                 TOS = TOS * sizeof(cell_t);\r
 522                                 endcase;\r
 523                                 \r
 524                 case ID_CFETCH:   TOS = *((uint8_t *) TOS); endcase;\r
 525 \r
 526                 case ID_CMOVE: /* ( src dst n -- ) */\r
 527                         {\r
 528                                 register char *DstPtr = (char *) M_POP; /* dst */\r
 529                                 CharPtr = (char *) M_POP;    /* src */\r
 530                                 for( Scratch=0; (ucell_t) Scratch < (ucell_t) TOS ; Scratch++ )\r
 531                                 {\r
 532                                         *DstPtr++ = *CharPtr++;\r
 533                                 }\r
 534                                 M_DROP;\r
 535                         }\r
 536                         endcase;\r
 537                         \r
 538                 case ID_CMOVE_UP: /* ( src dst n -- ) */\r
 539                         {\r
 540                                 register char *DstPtr = ((char *) M_POP) + TOS; /* dst */\r
 541                                 CharPtr = ((char *) M_POP) + TOS;;    /* src */\r
 542                                 for( Scratch=0; (ucell_t) Scratch < (ucell_t) TOS ; Scratch++ )\r
 543                                 {\r
 544                                         *(--DstPtr) = *(--CharPtr);\r
 545                                 }\r
 546                                 M_DROP;\r
 547                         }\r
 548                         endcase;\r
 549                 \r
 550 #ifndef PF_NO_SHELL\r
 551                 case ID_COLON:\r
 552                         SAVE_REGISTERS;\r
 553                         ffColon( );\r
 554                         LOAD_REGISTERS;\r
 555                         endcase;\r
 556                 case ID_COLON_P:  /* ( $name xt -- ) */\r
 557                         CreateDicEntry( TOS, (char *) M_POP, 0 );\r
 558                         M_DROP;\r
 559                         endcase;\r
 560 #endif  /* !PF_NO_SHELL */\r
 561 \r
 562                 case ID_COMPARE:\r
 563                         {\r
 564                                 const char *s1, *s2;\r
 565                                 cell_t len1;\r
 566                                 s2 = (const char *) M_POP;\r
 567                                 len1 = M_POP;\r
 568                                 s1 = (const char *) M_POP;\r
 569                                 TOS = ffCompare( s1, len1, s2, TOS );\r
 570                         }\r
 571                         endcase;\r
 572                         \r
 573 /* ( a b -- flag , Comparisons ) */\r
 574                 case ID_COMP_EQUAL:\r
 575                         TOS = ( TOS == M_POP ) ? FTRUE : FFALSE ;\r
 576                         endcase;\r
 577                 case ID_COMP_NOT_EQUAL:\r
 578                         TOS = ( TOS != M_POP ) ? FTRUE : FFALSE ;\r
 579                         endcase;\r
 580                 case ID_COMP_GREATERTHAN:\r
 581                         TOS = ( M_POP > TOS ) ? FTRUE : FFALSE ;\r
 582                         endcase;\r
 583                 case ID_COMP_LESSTHAN:\r
 584                         TOS = (  M_POP < TOS ) ? FTRUE : FFALSE ;\r
 585                         endcase;\r
 586                 case ID_COMP_U_GREATERTHAN:\r
 587                         TOS = ( ((ucell_t)M_POP) > ((ucell_t)TOS) ) ? FTRUE : FFALSE ;\r
 588                         endcase;\r
 589                 case ID_COMP_U_LESSTHAN:\r
 590                         TOS = ( ((ucell_t)M_POP) < ((ucell_t)TOS) ) ? FTRUE : FFALSE ;\r
 591                         endcase;\r
 592                 case ID_COMP_ZERO_EQUAL:\r
 593                         TOS = ( TOS == 0 ) ? FTRUE : FFALSE ;\r
 594                         endcase;\r
 595                 case ID_COMP_ZERO_NOT_EQUAL:\r
 596                         TOS = ( TOS != 0 ) ? FTRUE : FALSE ;\r
 597                         endcase;\r
 598                 case ID_COMP_ZERO_GREATERTHAN:\r
 599                         TOS = ( TOS > 0 ) ? FTRUE : FFALSE ;\r
 600                         endcase;\r
 601                 case ID_COMP_ZERO_LESSTHAN:\r
 602                         TOS = ( TOS < 0 ) ? FTRUE : FFALSE ;\r
 603                         endcase;\r
 604                         \r
 605                 case ID_CR:\r
 606                         EMIT_CR;\r
 607                         endcase;\r
 608                 \r
 609 #ifndef PF_NO_SHELL\r
 610                 case ID_CREATE:\r
 611                         SAVE_REGISTERS;\r
 612                         ffCreate();\r
 613                         LOAD_REGISTERS;\r
 614                         endcase;\r
 615 #endif  /* !PF_NO_SHELL */\r
 616 \r
 617                 case ID_CREATE_P:\r
 618                         PUSH_TOS;\r
 619 /* Put address of body on stack.  Insptr points after code start. */\r
 620                         TOS = (cell_t) ((char *)InsPtr - sizeof(cell_t) + CREATE_BODY_OFFSET );\r
 621                         endcase;\r
 622         \r
 623                 case ID_CSTORE: /* ( c caddr -- ) */\r
 624                         *((uint8_t *) TOS) = (uint8_t) M_POP;\r
 625                         M_DROP;\r
 626                         endcase;\r
 627 \r
 628 /* Double precision add. */\r
 629                 case ID_D_PLUS:  /* D+ ( al ah bl bh -- sl sh ) */ \r
 630                         {\r
 631                                 register ucell_t ah,al,bl,sh,sl;\r
 632 #define bh TOS\r
 633                                 bl = M_POP;\r
 634                                 ah = M_POP;\r
 635                                 al = M_POP;\r
 636                                 sh = 0;\r
 637                                 sl = al + bl;\r
 638                                 if( sl < bl ) sh = 1; /* Carry */\r
 639                                 sh += ah + bh;\r
 640                                 M_PUSH( sl );\r
 641                                 TOS = sh;\r
 642 #undef bh\r
 643                         }\r
 644                         endcase;\r
 645         \r
 646 /* Double precision subtract. */\r
 647                 case ID_D_MINUS:  /* D- ( al ah bl bh -- sl sh ) */ \r
 648                         {\r
 649                                 register ucell_t ah,al,bl,sh,sl;\r
 650 #define bh TOS\r
 651                                 bl = M_POP;\r
 652                                 ah = M_POP;\r
 653                                 al = M_POP;\r
 654                                 sh = 0;\r
 655                                 sl = al - bl;\r
 656                                 if( al < bl ) sh = 1; /* Borrow */\r
 657                                 sh = ah - bh - sh;\r
 658                                 M_PUSH( sl );\r
 659                                 TOS = sh;\r
 660 #undef bh\r
 661                         }\r
 662                         endcase;\r
 663                         \r
 664 /* Assume 8-bit char and calculate cell width. */\r
 665 #define NBITS ((sizeof(ucell_t)) * 8)\r
 666 /* Define half the number of bits in a cell. */\r
 667 #define HNBITS (NBITS / 2)\r
 668 /* Assume two-complement arithmetic to calculate lower half. */\r
 669 #define LOWER_HALF(n) ((n) & (((ucell_t)1 << HNBITS) - 1))\r
 670 #define HIGH_BIT ((ucell_t)1 << (NBITS - 1))\r
 671 \r
 672 /* Perform cell*cell bit multiply for a 2 cell result, by factoring into half cell quantities.\r
 673  * Using an improved algorithm suggested by Steve Green.\r
 674  * Converted to 64-bit by Aleksej Saushev.\r
 675  */\r
 676                 case ID_D_UMTIMES:  /* UM* ( a b -- lo hi ) */ \r
 677                         {\r
 678                                 ucell_t ahi, alo, bhi, blo; /* input parts */\r
 679                                 ucell_t lo, hi, temp;\r
 680 /* Get values from stack. */\r
 681                                 ahi = M_POP;\r
 682                                 bhi = TOS;\r
 683 /* Break into hi and lo 16 bit parts. */\r
 684                                 alo = LOWER_HALF(ahi);\r
 685                                 ahi = ahi >> HNBITS;\r
 686                                 blo = LOWER_HALF(bhi);\r
 687                                 bhi = bhi >> HNBITS;\r
 688 \r
 689                                 lo = 0;\r
 690                                 hi = 0;\r
 691 /* higher part: ahi * bhi */\r
 692                                 hi += ahi * bhi;\r
 693 /* middle (overlapping) part: ahi * blo */\r
 694                                 temp = ahi * blo;\r
 695                                 lo += LOWER_HALF(temp);\r
 696                                 hi += temp >> HNBITS;\r
 697 /* middle (overlapping) part: alo * bhi  */\r
 698                                 temp = alo * bhi;\r
 699                                 lo += LOWER_HALF(temp);\r
 700                                 hi += temp >> HNBITS;\r
 701 /* lower part: alo * blo */\r
 702                                 temp = alo * blo;\r
 703 /* its higher half overlaps with middle's lower half: */\r
 704                                 lo += temp >> HNBITS;\r
 705 /* process carry: */\r
 706                                 hi += lo >> HNBITS;\r
 707                                 lo = LOWER_HALF(lo);\r
 708 /* combine lower part of result: */\r
 709                                 lo = (lo << HNBITS) + LOWER_HALF(temp);\r
 710 \r
 711                                 M_PUSH( lo );\r
 712                                 TOS = hi;\r
 713                         }\r
 714                         endcase;\r
 715                         \r
 716 /* Perform cell*cell bit multiply for 2 cell result, using shift and add. */\r
 717                 case ID_D_MTIMES:  /* M* ( a b -- pl ph ) */ \r
 718                         {\r
 719                                 ucell_t ahi, alo, bhi, blo; /* input parts */\r
 720                                 ucell_t lo, hi, temp;\r
 721                                 int sg;\r
 722 /* Get values from stack. */\r
 723                                 ahi = M_POP;\r
 724                                 bhi = TOS;\r
 725 \r
 726 /* Calculate product sign: */\r
 727                                 sg = ((cell_t)(ahi ^ bhi) < 0);\r
 728 /* Take absolute values and reduce to um* */\r
 729                                 if ((cell_t)ahi < 0) ahi = (ucell_t)(-ahi);\r
 730                                 if ((cell_t)bhi < 0) bhi = (ucell_t)(-bhi);\r
 731 \r
 732 /* Break into hi and lo 16 bit parts. */\r
 733                                 alo = LOWER_HALF(ahi);\r
 734                                 ahi = ahi >> HNBITS;\r
 735                                 blo = LOWER_HALF(bhi);\r
 736                                 bhi = bhi >> HNBITS;\r
 737 \r
 738                                 lo = 0;\r
 739                                 hi = 0;\r
 740 /* higher part: ahi * bhi */\r
 741                                 hi += ahi * bhi;\r
 742 /* middle (overlapping) part: ahi * blo */\r
 743                                 temp = ahi * blo;\r
 744                                 lo += LOWER_HALF(temp);\r
 745                                 hi += temp >> HNBITS;\r
 746 /* middle (overlapping) part: alo * bhi  */\r
 747                                 temp = alo * bhi;\r
 748                                 lo += LOWER_HALF(temp);\r
 749                                 hi += temp >> HNBITS;\r
 750 /* lower part: alo * blo */\r
 751                                 temp = alo * blo;\r
 752 /* its higher half overlaps with middle's lower half: */\r
 753                                 lo += temp >> HNBITS;\r
 754 /* process carry: */\r
 755                                 hi += lo >> HNBITS;\r
 756                                 lo = LOWER_HALF(lo);\r
 757 /* combine lower part of result: */\r
 758                                 lo = (lo << HNBITS) + LOWER_HALF(temp);\r
 759 \r
 760 /* Negate product if one operand negative. */\r
 761                                 if(sg)\r
 762                                 {\r
 763                                         /* lo = (ucell_t)(- lo); */\r
 764                                         lo = ~lo + 1;\r
 765                                         hi = ~hi + ((lo == 0) ? 1 : 0);\r
 766                                 }\r
 767 \r
 768                                 M_PUSH( lo );\r
 769                                 TOS = hi;\r
 770                         }\r
 771                         endcase;\r
 772 \r
 773 #define DULT(du1l,du1h,du2l,du2h) ( (du2h<du1h) ? FALSE : ( (du2h==du1h) ? (du1l<du2l) : TRUE) )\r
 774 /* Perform 2 cell by 1 cell divide for 1 cell result and remainder, using shift and subtract. */\r
 775                 case ID_D_UMSMOD:  /* UM/MOD ( al ah bdiv -- rem q ) */ \r
 776                         {\r
 777                                 ucell_t ah,al, q,di, bl,bh, sl,sh;\r
 778                                 ah = M_POP;\r
 779                                 al = M_POP;\r
 780                                 bh = TOS;\r
 781                                 bl = 0;\r
 782                                 q = 0;\r
 783                                 for( di=0; di<NBITS; di++ )\r
 784                                 {\r
 785                                         if( !DULT(al,ah,bl,bh) )\r
 786                                         {\r
 787                                                 sh = 0;\r
 788                                                 sl = al - bl;\r
 789                                                 if( al < bl ) sh = 1; /* Borrow */\r
 790                                                 sh = ah - bh - sh;\r
 791                                                 ah = sh;\r
 792                                                 al = sl;\r
 793                                                 q |= 1;\r
 794                                         }\r
 795                                         q = q << 1;\r
 796                                         bl = (bl >> 1) | (bh << (NBITS-1));\r
 797                                         bh = bh >> 1;\r
 798                                 }\r
 799                                 if( !DULT(al,ah,bl,bh) )\r
 800                                 {\r
 801                                 \r
 802                                         al = al - bl;\r
 803                                         q |= 1;\r
 804                                 }\r
 805                                 M_PUSH( al );  /* rem */\r
 806                                 TOS = q;\r
 807                         }\r
 808                         endcase;\r
 809 \r
 810 /* Perform 2 cell by 1 cell divide for 2 cell result and remainder, using shift and subtract. */\r
 811                 case ID_D_MUSMOD:  /* MU/MOD ( al am bdiv -- rem ql qh ) */ \r
 812                         {\r
 813                                 register ucell_t ah,am,al,ql,qh,di;\r
 814 #define bdiv ((ucell_t)TOS)\r
 815                                 ah = 0;\r
 816                                 am = M_POP;\r
 817                                 al = M_POP;\r
 818                                 qh = ql = 0;\r
 819                                 for( di=0; di<2*NBITS; di++ )\r
 820                                 {\r
 821                                         if( bdiv <= ah )\r
 822                                         {\r
 823                                                 ah = ah - bdiv;\r
 824                                                 ql |= 1;\r
 825                                         }\r
 826                                         qh = (qh << 1) | (ql >> (NBITS-1));\r
 827                                         ql = ql << 1;\r
 828                                         ah = (ah << 1) | (am >> (NBITS-1));\r
 829                                         am = (am << 1) | (al >> (NBITS-1));\r
 830                                         al = al << 1;\r
 831 DBUG(("XX ah,m,l = 0x%8x,%8x,%8x - qh,l = 0x%8x,%8x\n", ah,am,al, qh,ql ));\r
 832                                 }\r
 833                                 if( bdiv <= ah )\r
 834                                 {\r
 835                                         ah = ah - bdiv;\r
 836                                         ql |= 1;\r
 837                                 }\r
 838                                 M_PUSH( ah ); /* rem */\r
 839                                 M_PUSH( ql );\r
 840                                 TOS = qh;\r
 841 #undef bdiv\r
 842                         }\r
 843                         endcase;\r
 844 \r
 845 #ifndef PF_NO_SHELL\r
 846                 case ID_DEFER:\r
 847                         ffDefer( );\r
 848                         endcase;\r
 849 #endif  /* !PF_NO_SHELL */\r
 850 \r
 851                 case ID_DEFER_P:\r
 852                         endcase;\r
 853 \r
 854                 case ID_DEPTH:\r
 855                         PUSH_TOS;\r
 856                         TOS = gCurrentTask->td_StackBase - STKPTR;\r
 857                         endcase;\r
 858                         \r
 859                 case ID_DIVIDE:     BINARY_OP( / ); endcase;\r
 860                         \r
 861                 case ID_DOT:\r
 862                         ffDot( TOS );\r
 863                         M_DROP;\r
 864                         endcase;\r
 865                         \r
 866                 case ID_DOTS:\r
 867                         M_DOTS;\r
 868                         endcase;\r
 869                         \r
 870                 case ID_DROP:  M_DROP; endcase;\r
 871                         \r
 872                 case ID_DUMP:\r
 873                         Scratch = M_POP;\r
 874                         DumpMemory( (char *) Scratch, TOS );\r
 875                         M_DROP;\r
 876                         endcase;\r
 877 \r
 878                 case ID_DUP:   M_DUP; endcase;\r
 879                 \r
 880                 case ID_DO_P: /* ( limit start -- ) ( R: -- start limit ) */\r
 881                         M_R_PUSH( TOS );\r
 882                         M_R_PUSH( M_POP );\r
 883                         M_DROP;\r
 884                         endcase;\r
 885                         \r
 886                 case ID_EOL:    /* ( -- end_of_line_char ) */\r
 887                         PUSH_TOS;\r
 888                         TOS = (cell_t) '\n';\r
 889                         endcase;\r
 890                         \r
 891                 case ID_ERRORQ_P:  /* ( flag num -- , quit if flag true ) */\r
 892                         Scratch = TOS;\r
 893                         M_DROP;\r
 894                         if(TOS)\r
 895                         {\r
 896                                 M_THROW(Scratch);\r
 897                         }\r
 898                         else\r
 899                         {\r
 900                                 M_DROP;\r
 901                         }\r
 902                         endcase;\r
 903                         \r
 904                 case ID_EMIT_P:\r
 905                         EMIT( (char) TOS );\r
 906                         M_DROP;\r
 907                         endcase;\r
 908                         \r
 909                 case ID_EXECUTE:\r
 910 /* Save IP on return stack like a JSR. */\r
 911                         M_R_PUSH( InsPtr );\r
 912 #ifdef PF_SUPPORT_TRACE\r
 913 /* Bump level for trace. */\r
 914                         Level++;\r
 915 #endif\r
 916                         if( IsTokenPrimitive( TOS ) )\r
 917                         {\r
 918                                 WRITE_CELL_DIC( (cell_t *) &FakeSecondary[0], TOS);   /* Build a fake secondary and execute it. */\r
 919                                 InsPtr = &FakeSecondary[0];\r
 920                         }\r
 921                         else\r
 922                         {\r
 923                                 InsPtr = (cell_t *) LOCAL_CODEREL_TO_ABS(TOS);\r
 924                         }\r
 925                         M_DROP;\r
 926                         endcase;\r
 927                         \r
 928                 case ID_FETCH:\r
 929 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
 930                         if( IN_DICS( TOS ) )\r
 931                         {\r
 932                                 TOS = (cell_t) READ_CELL_DIC((cell_t *)TOS);\r
 933                         }\r
 934                         else\r
 935                         {\r
 936                                 TOS = *((cell_t *)TOS);\r
 937                         }\r
 938 #else\r
 939                         TOS = *((cell_t *)TOS);\r
 940 #endif\r
 941                         endcase;\r
 942                 \r
 943                 case ID_FILE_CREATE: /* ( c-addr u fam -- fid ior ) */\r
 944 /* Build NUL terminated name string. */\r
 945                         Scratch = M_POP; /* u */\r
 946                         Temp = M_POP;    /* caddr */\r
 947                         if( Scratch < TIB_SIZE-2 )\r
 948                         {\r
 949                                 const char *famText = pfSelectFileModeCreate( TOS );\r
 950                                 pfCopyMemory( gScratch, (char *) Temp, (ucell_t) Scratch );\r
 951                                 gScratch[Scratch] = '\0';\r
 952                                 DBUG(("Create file = %s with famTxt %s\n", gScratch, famText ));\r
 953                                 FileID = sdOpenFile( gScratch, famText );\r
 954                                 TOS = ( FileID == NULL ) ? -1 : 0 ;\r
 955                                 M_PUSH( (cell_t) FileID );\r
 956                         }\r
 957                         else\r
 958                         {\r
 959                                 ERR("Filename too large for name buffer.\n");\r
 960                                 M_PUSH( 0 );\r
 961                                 TOS = -2;\r
 962                         }\r
 963                         endcase;\r
 964 \r
 965                 case ID_FILE_DELETE: /* ( c-addr u -- ior ) */\r
 966 /* Build NUL terminated name string. */\r
 967                         Temp = M_POP;    /* caddr */\r
 968                         if( TOS < TIB_SIZE-2 )\r
 969                         {\r
 970                                 pfCopyMemory( gScratch, (char *) Temp, (ucell_t) TOS );\r
 971                                 gScratch[TOS] = '\0';\r
 972                                 DBUG(("Delete file = %s\n", gScratch ));\r
 973                                 TOS = sdDeleteFile( gScratch );\r
 974                         }\r
 975                         else\r
 976                         {\r
 977                                 ERR("Filename too large for name buffer.\n");\r
 978                                 TOS = -2;\r
 979                         }\r
 980                         endcase;\r
 981 \r
 982                 case ID_FILE_OPEN: /* ( c-addr u fam -- fid ior ) */\r
 983 /* Build NUL terminated name string. */\r
 984                         Scratch = M_POP; /* u */\r
 985                         Temp = M_POP;    /* caddr */\r
 986                         if( Scratch < TIB_SIZE-2 )\r
 987                         {\r
 988                                 const char *famText = pfSelectFileModeOpen( TOS );\r
 989                                 pfCopyMemory( gScratch, (char *) Temp, (ucell_t) Scratch );\r
 990                                 gScratch[Scratch] = '\0';\r
 991                                 DBUG(("Open file = %s\n", gScratch ));\r
 992                                 FileID = sdOpenFile( gScratch, famText );\r
 993 \r
 994                                 TOS = ( FileID == NULL ) ? -1 : 0 ;\r
 995                                 M_PUSH( (cell_t) FileID );\r
 996                         }\r
 997                         else\r
 998                         {\r
 999                                 ERR("Filename too large for name buffer.\n");\r
1000                                 M_PUSH( 0 );\r
1001                                 TOS = -2;\r
1002                         }\r
1003                         endcase;\r
1004                         \r
1005                 case ID_FILE_CLOSE: /* ( fid -- ior ) */\r
1006                         TOS = sdCloseFile( (FileStream *) TOS );\r
1007                         endcase;\r
1008                                 \r
1009                 case ID_FILE_READ: /* ( addr len fid -- u2 ior ) */\r
1010                         FileID = (FileStream *) TOS;\r
1011                         Scratch = M_POP;\r
1012                         CharPtr = (char *) M_POP;\r
1013                         Temp = sdReadFile( CharPtr, 1, Scratch, FileID );\r
1014                         M_PUSH(Temp);\r
1015                         TOS = 0;\r
1016                         endcase;\r
1017                                 \r
1018                 case ID_FILE_SIZE: /* ( fid -- ud ior ) */\r
1019 /* Determine file size by seeking to end and returning position. */\r
1020                         FileID = (FileStream *) TOS;\r
1021                         {\r
1022                                 off_t endposition, offsetHi;\r
1023                                 off_t original = sdTellFile( FileID );\r
1024                                 sdSeekFile( FileID, 0, PF_SEEK_END );\r
1025                                 endposition = sdTellFile( FileID );\r
1026                                 M_PUSH(endposition);\r
1027                                 /* Just use a 0 if they are the same size. */\r
1028                                 offsetHi = (sizeof(off_t) > sizeof(cell_t)) ? (endposition >> (8*sizeof(cell_t))) : 0 ;\r
1029                                 M_PUSH(offsetHi);\r
1030                                 sdSeekFile( FileID, original, PF_SEEK_SET );\r
1031                                 TOS = (original < 0) ? -4 : 0 ; /* !!! err num */\r
1032                         }\r
1033                         endcase;\r
1034 \r
1035                 case ID_FILE_WRITE: /* ( addr len fid -- ior ) */\r
1036                         FileID = (FileStream *) TOS;\r
1037                         Scratch = M_POP;\r
1038                         CharPtr = (char *) M_POP;\r
1039                         Temp = sdWriteFile( CharPtr, 1, Scratch, FileID );\r
1040                         TOS = (Temp != Scratch) ? -3 : 0;\r
1041                         endcase;\r
1042 \r
1043                 case ID_FILE_REPOSITION: /* ( ud fid -- ior ) */                                \r
1044                         {\r
1045                                 off_t offset;\r
1046                                 FileID = (FileStream *) TOS;\r
1047                                 offset = M_POP;\r
1048                                 /* Avoid compiler warnings on Mac. */\r
1049                                 offset = (sizeof(off_t) > sizeof(cell_t)) ? (offset << 8*sizeof(cell_t)) : 0 ;\r
1050                                 offset += M_POP;\r
1051                                 TOS = sdSeekFile( FileID, offset, PF_SEEK_SET );\r
1052                         }\r
1053                         endcase;\r
1054 \r
1055                 case ID_FILE_POSITION: /* ( fid -- ud ior ) */\r
1056                         {\r
1057                                 off_t position;\r
1058                                 off_t offsetHi;\r
1059                                 FileID = (FileStream *) TOS;\r
1060                                 position = sdTellFile( FileID );\r
1061                                 M_PUSH(position);\r
1062                                 /* Just use a 0 if they are the same size. */\r
1063                                 offsetHi = (sizeof(off_t) > sizeof(cell_t)) ? (position >> (8*sizeof(cell_t))) : 0 ;\r
1064                                 M_PUSH(offsetHi);\r
1065                                 TOS = (position < 0) ? -4 : 0 ; /* !!! err num */\r
1066                         }\r
1067                         endcase;\r
1068 \r
1069                 case ID_FILE_RO: /* (  -- fam ) */\r
1070                         PUSH_TOS;\r
1071                         TOS = PF_FAM_READ_ONLY;\r
1072                         endcase;\r
1073                                 \r
1074                 case ID_FILE_RW: /* ( -- fam ) */\r
1075                         PUSH_TOS;\r
1076                         TOS = PF_FAM_READ_WRITE;\r
1077                         endcase;\r
1078 \r
1079                 case ID_FILE_WO: /* ( -- fam ) */\r
1080                         PUSH_TOS;\r
1081                         TOS = PF_FAM_WRITE_ONLY;\r
1082                         endcase;\r
1083 \r
1084                 case ID_FILE_BIN: /* ( -- fam ) */\r
1085                         TOS = TOS | PF_FAM_BINARY_FLAG;\r
1086                         endcase;\r
1087                                 \r
1088                 case ID_FILL: /* ( caddr num charval -- ) */\r
1089                         {\r
1090                                 register char *DstPtr;\r
1091                                 Temp = M_POP;    /* num */\r
1092                                 DstPtr = (char *) M_POP; /* dst */\r
1093                                 for( Scratch=0; (ucell_t) Scratch < (ucell_t) Temp ; Scratch++ )\r
1094                                 {\r
1095                                         *DstPtr++ = (char) TOS;\r
1096                                 }\r
1097                                 M_DROP;\r
1098                         }\r
1099                         endcase;\r
1100                         \r
1101 #ifndef PF_NO_SHELL\r
1102                 case ID_FIND:  /* ( $addr -- $addr 0 | xt +-1 ) */\r
1103                         TOS = ffFind( (char *) TOS, (ExecToken *) &Temp );\r
1104                         M_PUSH( Temp );\r
1105                         endcase;\r
1106                         \r
1107                 case ID_FINDNFA:\r
1108                         TOS = ffFindNFA( (const ForthString *) TOS, (const ForthString **) &Temp );\r
1109                         M_PUSH( (cell_t) Temp );\r
1110                         endcase;\r
1111 #endif  /* !PF_NO_SHELL */\r
1112 \r
1113                 case ID_FLUSHEMIT:\r
1114                         sdTerminalFlush();\r
1115                         endcase;\r
1116                         \r
1117 /* Validate memory before freeing. Clobber validator and first word. */\r
1118                 case ID_FREE:   /* ( addr -- result ) */\r
1119                         if( TOS == 0 )\r
1120                         {\r
1121                                 ERR("FREE passed NULL!\n");\r
1122                                 TOS = -2; /* FIXME error code */\r
1123                         }\r
1124                         else\r
1125                         {\r
1126                                 CellPtr = (cell_t *) TOS;\r
1127                                 CellPtr--;\r
1128                                 if( ((ucell_t)*CellPtr) != ((ucell_t)CellPtr ^ PF_MEMORY_VALIDATOR))\r
1129                                 {\r
1130                                         TOS = -2; /* FIXME error code */\r
1131                                 }\r
1132                                 else\r
1133                                 {\r
1134                                         CellPtr[0] = 0xDeadBeef;\r
1135                                         pfFreeMem((char *)CellPtr);\r
1136                                         TOS = 0;\r
1137                                 }\r
1138                         }\r
1139                         endcase;\r
1140                         \r
1141 #include "pfinnrfp.h"\r
1142 \r
1143                 case ID_HERE:\r
1144                         PUSH_TOS;\r
1145                         TOS = (cell_t)CODE_HERE;\r
1146                         endcase;\r
1147                 \r
1148                 case ID_NUMBERQ_P:   /* ( addr -- 0 | n 1 ) */\r
1149 /* Convert using number converter in 'C'.\r
1150 ** Only supports single precision for bootstrap.\r
1151 */\r
1152                         TOS = (cell_t) ffNumberQ( (char *) TOS, &Temp );\r
1153                         if( TOS == NUM_TYPE_SINGLE)\r
1154                         {\r
1155                                 M_PUSH( Temp );   /* Push single number */\r
1156                         }\r
1157                         endcase;\r
1158                         \r
1159                 case ID_I:  /* ( -- i , DO LOOP index ) */\r
1160                         PUSH_TOS;\r
1161                         TOS = M_R_PICK(1);\r
1162                         endcase;\r
1163 \r
1164 #ifndef PF_NO_SHELL\r
1165                 case ID_INCLUDE_FILE:\r
1166                         FileID = (FileStream *) TOS;\r
1167                         M_DROP;    /* Drop now so that INCLUDE has a clean stack. */\r
1168                         SAVE_REGISTERS;\r
1169                         Scratch = ffIncludeFile( FileID );\r
1170                         LOAD_REGISTERS;\r
1171                         if( Scratch ) M_THROW(Scratch)\r
1172                         endcase;\r
1173 #endif  /* !PF_NO_SHELL */\r
1174                         \r
1175 #ifndef PF_NO_SHELL\r
1176                 case ID_INTERPRET:\r
1177                         SAVE_REGISTERS;\r
1178                         Scratch = ffInterpret();\r
1179                         LOAD_REGISTERS;\r
1180                         if( Scratch ) M_THROW(Scratch)\r
1181                         endcase;\r
1182 #endif  /* !PF_NO_SHELL */\r
1183 \r
1184                 case ID_J:  /* ( -- j , second DO LOOP index ) */\r
1185                         PUSH_TOS;\r
1186                         TOS = M_R_PICK(3);\r
1187                         endcase;\r
1188 \r
1189                 case ID_KEY:\r
1190                         PUSH_TOS;\r
1191                         TOS = ioKey();\r
1192                         endcase;\r
1193                         \r
1194 #ifndef PF_NO_SHELL\r
1195                 case ID_LITERAL:\r
1196                         ffLiteral( TOS );\r
1197                         M_DROP;\r
1198                         endcase;\r
1199 #endif /* !PF_NO_SHELL */\r
1200 \r
1201                 case ID_LITERAL_P:\r
1202                         DBUG(("ID_LITERAL_P: InsPtr = 0x%x, *InsPtr = 0x%x\n", InsPtr, *InsPtr ));\r
1203                         PUSH_TOS;\r
1204                         TOS = READ_CELL_DIC(InsPtr++);\r
1205                         endcase;\r
1206         \r
1207 #ifndef PF_NO_SHELL\r
1208                 case ID_LOCAL_COMPILER: DO_VAR(gLocalCompiler_XT); endcase;\r
1209 #endif /* !PF_NO_SHELL */\r
1210 \r
1211                 case ID_LOCAL_FETCH: /* ( i <local> -- n , fetch from local ) */\r
1212                         TOS = *(LocalsPtr - TOS);\r
1213                         endcase;\r
1214 \r
1215 #define LOCAL_FETCH_N(num) \\r
1216                 case ID_LOCAL_FETCH_##num: /* ( <local> -- n , fetch from local ) */ \\r
1217                         PUSH_TOS; \\r
1218                         TOS = *(LocalsPtr -(num)); \\r
1219                         endcase;\r
1220 \r
1221                 LOCAL_FETCH_N(1);\r
1222                 LOCAL_FETCH_N(2);\r
1223                 LOCAL_FETCH_N(3);\r
1224                 LOCAL_FETCH_N(4);\r
1225                 LOCAL_FETCH_N(5);\r
1226                 LOCAL_FETCH_N(6);\r
1227                 LOCAL_FETCH_N(7);\r
1228                 LOCAL_FETCH_N(8);\r
1229                 \r
1230                 case ID_LOCAL_STORE:  /* ( n i <local> -- , store n in local ) */\r
1231                         *(LocalsPtr - TOS) = M_POP;\r
1232                         M_DROP;\r
1233                         endcase;\r
1234 \r
1235 #define LOCAL_STORE_N(num) \\r
1236                 case ID_LOCAL_STORE_##num:  /* ( n <local> -- , store n in local ) */ \\r
1237                         *(LocalsPtr - (num)) = TOS; \\r
1238                         M_DROP; \\r
1239                         endcase;\r
1240 \r
1241                 LOCAL_STORE_N(1);\r
1242                 LOCAL_STORE_N(2);\r
1243                 LOCAL_STORE_N(3);\r
1244                 LOCAL_STORE_N(4);\r
1245                 LOCAL_STORE_N(5);\r
1246                 LOCAL_STORE_N(6);\r
1247                 LOCAL_STORE_N(7);\r
1248                 LOCAL_STORE_N(8);\r
1249                 \r
1250                 case ID_LOCAL_PLUSSTORE:  /* ( n i <local> -- , add n to local ) */\r
1251                         *(LocalsPtr - TOS) += M_POP;\r
1252                         M_DROP;\r
1253                         endcase;\r
1254                         \r
1255                 case ID_LOCAL_ENTRY: /* ( x0 x1 ... xn n -- ) */\r
1256                 /* create local stack frame */\r
1257                         {\r
1258                                 cell_t i = TOS;\r
1259                                 cell_t *lp;\r
1260                                 DBUG(("LocalEntry: n = %d\n", TOS));\r
1261                                 /* End of locals. Create stack frame */\r
1262                                 DBUG(("LocalEntry: before RP@ = 0x%x, LP = 0x%x\n",\r
1263                                         TORPTR, LocalsPtr));\r
1264                                 M_R_PUSH(LocalsPtr);\r
1265                                 LocalsPtr = TORPTR;\r
1266                                 TORPTR -= TOS;\r
1267                                 DBUG(("LocalEntry: after RP@ = 0x%x, LP = 0x%x\n",\r
1268                                         TORPTR, LocalsPtr));\r
1269                                 lp = TORPTR;\r
1270                                 while(i-- > 0)\r
1271                                 {\r
1272                                         *lp++ = M_POP;    /* Load local vars from stack */\r
1273                                 }\r
1274                                 M_DROP;\r
1275                         }\r
1276                         endcase;\r
1277 \r
1278                 case ID_LOCAL_EXIT: /* cleanup up local stack frame */\r
1279                         DBUG(("LocalExit: before RP@ = 0x%x, LP = 0x%x\n",\r
1280                                 TORPTR, LocalsPtr));\r
1281                         TORPTR = LocalsPtr;\r
1282                         LocalsPtr = (cell_t *) M_R_POP;\r
1283                         DBUG(("LocalExit: after RP@ = 0x%x, LP = 0x%x\n",\r
1284                                 TORPTR, LocalsPtr));\r
1285                         endcase;\r
1286                         \r
1287 #ifndef PF_NO_SHELL\r
1288                 case ID_LOADSYS:\r
1289                         MSG("Load "); MSG(SYSTEM_LOAD_FILE); EMIT_CR;\r
1290                         FileID = sdOpenFile(SYSTEM_LOAD_FILE, "r");\r
1291                         if( FileID )\r
1292                         {\r
1293                                 SAVE_REGISTERS;\r
1294                                 Scratch = ffIncludeFile( FileID ); /* Also closes the file. */\r
1295                                 LOAD_REGISTERS;\r
1296                                 if( Scratch ) M_THROW(Scratch);\r
1297                         }\r
1298                         else\r
1299                         {\r
1300                                  ERR(SYSTEM_LOAD_FILE); ERR(" could not be opened!\n");\r
1301                         }\r
1302                         endcase;\r
1303 #endif  /* !PF_NO_SHELL */\r
1304 \r
1305                 case ID_LEAVE_P: /* ( R: index limit --  ) */\r
1306                         M_R_DROP;\r
1307                         M_R_DROP;\r
1308                         M_BRANCH;\r
1309                         endcase;\r
1310 \r
1311                 case ID_LOOP_P: /* ( R: index limit -- | index limit ) */\r
1312                         Temp = M_R_POP; /* limit */\r
1313                         Scratch = M_R_POP + 1; /* index */\r
1314                         if( Scratch == Temp )\r
1315                         {\r
1316                                 InsPtr++;   /* skip branch offset, exit loop */\r
1317                         }\r
1318                         else\r
1319                         {\r
1320 /* Push index and limit back to R */\r
1321                                 M_R_PUSH( Scratch );\r
1322                                 M_R_PUSH( Temp );\r
1323 /* Branch back to just after (DO) */\r
1324                                 M_BRANCH;\r
1325                         }\r
1326                         endcase;\r
1327                                 \r
1328                 case ID_LSHIFT:     BINARY_OP( << ); endcase;\r
1329                 \r
1330                 case ID_MAX:\r
1331                         Scratch = M_POP;\r
1332                         TOS = ( TOS > Scratch ) ? TOS : Scratch ;\r
1333                         endcase;\r
1334                         \r
1335                 case ID_MIN:\r
1336                         Scratch = M_POP;\r
1337                         TOS = ( TOS < Scratch ) ? TOS : Scratch ;\r
1338                         endcase;\r
1339                         \r
1340                 case ID_MINUS:     BINARY_OP( - ); endcase;\r
1341                         \r
1342 #ifndef PF_NO_SHELL\r
1343                 case ID_NAME_TO_TOKEN:\r
1344                         TOS = (cell_t) NameToToken((ForthString *)TOS);\r
1345                         endcase;\r
1346                         \r
1347                 case ID_NAME_TO_PREVIOUS:\r
1348                         TOS = (cell_t) NameToPrevious((ForthString *)TOS);\r
1349                         endcase;\r
1350 #endif\r
1351                         \r
1352                 case ID_NOOP:\r
1353                         endcase;\r
1354                         \r
1355                 case ID_OR:     BINARY_OP( | ); endcase;\r
1356                 \r
1357                 case ID_OVER:\r
1358                         PUSH_TOS;\r
1359                         TOS = M_STACK(1);\r
1360                         endcase;\r
1361                         \r
1362                 case ID_PICK: /* ( ... n -- sp(n) ) */\r
1363                         TOS = M_STACK(TOS);\r
1364                         endcase;\r
1365 \r
1366                 case ID_PLUS:     BINARY_OP( + ); endcase;\r
1367                 \r
1368                 case ID_PLUS_STORE:   /* ( n addr -- , add n to *addr ) */\r
1369 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
1370                         if( IN_DICS( TOS ) )\r
1371                         {\r
1372                                 Scratch = READ_CELL_DIC((cell_t *)TOS);\r
1373                                 Scratch += M_POP;\r
1374                                 WRITE_CELL_DIC((cell_t *)TOS,Scratch);\r
1375                         }\r
1376                         else\r
1377                         {\r
1378                                 *((cell_t *)TOS) += M_POP;\r
1379                         }\r
1380 #else\r
1381                         *((cell_t *)TOS) += M_POP;\r
1382 #endif\r
1383                         M_DROP;\r
1384                         endcase;\r
1385 \r
1386                 case ID_PLUSLOOP_P: /* ( delta -- ) ( R: index limit -- | index limit ) */\r
1387                         {\r
1388                                 ucell_t OldIndex, NewIndex, Limit;\r
1389 \r
1390                                 Limit = M_R_POP;\r
1391                                 OldIndex = M_R_POP;\r
1392                                 NewIndex = OldIndex + TOS; /* add TOS to index, not 1 */\r
1393 /* Do indices cross boundary between LIMIT-1 and LIMIT ? */\r
1394                                 if( ( (OldIndex - Limit) & ((Limit-1) - NewIndex) & 0x80000000 ) ||\r
1395                                     ( (NewIndex - Limit) & ((Limit-1) - OldIndex) & 0x80000000 ) )\r
1396                                 {\r
1397                                         InsPtr++;   /* skip branch offset, exit loop */\r
1398                                 }\r
1399                                 else\r
1400                                 {\r
1401 /* Push index and limit back to R */\r
1402                                         M_R_PUSH( NewIndex );\r
1403                                         M_R_PUSH( Limit );\r
1404 /* Branch back to just after (DO) */\r
1405                                         M_BRANCH;\r
1406                                 }\r
1407                                 M_DROP;\r
1408                         }\r
1409                         endcase;\r
1410 \r
1411                 case ID_QDO_P: /* (?DO) ( limit start -- ) ( R: -- start limit ) */\r
1412                         Scratch = M_POP;  /* limit */\r
1413                         if( Scratch == TOS )\r
1414                         {\r
1415 /* Branch to just after (LOOP) */\r
1416                                 M_BRANCH;\r
1417                         }\r
1418                         else\r
1419                         {\r
1420                                 M_R_PUSH( TOS );\r
1421                                 M_R_PUSH( Scratch );\r
1422                                 InsPtr++;   /* skip branch offset, enter loop */\r
1423                         }\r
1424                         M_DROP;\r
1425                         endcase;\r
1426 \r
1427                 case ID_QDUP:     if( TOS ) M_DUP; endcase;\r
1428 \r
1429                 case ID_QTERMINAL:  /* WARNING: Typically not fully implemented! */\r
1430                         PUSH_TOS;\r
1431                         TOS = sdQueryTerminal();\r
1432                         endcase;\r
1433                 \r
1434                 case ID_QUIT_P: /* Stop inner interpreter, go back to user. */\r
1435 #ifdef PF_SUPPORT_TRACE\r
1436                         Level = 0;\r
1437 #endif\r
1438                         M_THROW(THROW_QUIT);\r
1439                         endcase;\r
1440                         \r
1441                 case ID_R_DROP:\r
1442                         M_R_DROP;\r
1443                         endcase;\r
1444 \r
1445                 case ID_R_FETCH:\r
1446                         PUSH_TOS;\r
1447                         TOS = (*(TORPTR));\r
1448                         endcase;\r
1449                 \r
1450                 case ID_R_FROM:\r
1451                         PUSH_TOS;\r
1452                         TOS = M_R_POP;\r
1453                         endcase;\r
1454                         \r
1455                 case ID_REFILL:\r
1456                         PUSH_TOS;\r
1457                         TOS = (ffRefill() > 0) ? FTRUE : FFALSE;\r
1458                         endcase;\r
1459                         \r
1460 /* Resize memory allocated by ALLOCATE. */\r
1461                 case ID_RESIZE:  /* ( addr1 u -- addr2 result ) */\r
1462                         {\r
1463                                 cell_t *Addr1 = (cell_t *) M_POP;\r
1464                                 /* Point to validator below users address. */\r
1465                                 cell_t *FreePtr = Addr1 - 1;\r
1466                                 if( ((ucell_t)*FreePtr) != ((ucell_t)FreePtr ^ PF_MEMORY_VALIDATOR))\r
1467                                 {\r
1468                                         /* 090218 - Fixed bug, was returning zero. */\r
1469                                         M_PUSH( Addr1 );\r
1470                                         TOS = -3;\r
1471                                 }\r
1472                                 else\r
1473                                 {\r
1474                                         /* Try to allocate. */\r
1475                                         CellPtr = (cell_t *) pfAllocMem( TOS + sizeof(cell_t) );\r
1476                                         if( CellPtr )\r
1477                                         {\r
1478                                                 /* Copy memory including validation. */\r
1479                                                 pfCopyMemory( (char *) CellPtr, (char *) FreePtr, TOS + sizeof(cell_t) );\r
1480                                                 *CellPtr = (cell_t)(((ucell_t)CellPtr) ^ (ucell_t)PF_MEMORY_VALIDATOR);\r
1481                                                 /* 090218 - Fixed bug that was incrementing the address twice. Thanks Reinhold Straub. */\r
1482                                                 /* Increment past validator to user address. */\r
1483                                     M_PUSH( (cell_t) (CellPtr + 1) );\r
1484                                                 TOS = 0; /* Result code. */\r
1485                                                 /* Mark old cell as dead so we can't free it twice. */\r
1486                                                 FreePtr[0] = 0xDeadBeef;\r
1487                                                 pfFreeMem((char *) FreePtr);\r
1488                                         }\r
1489                                         else\r
1490                                         {\r
1491                                                 /* 090218 - Fixed bug, was returning zero. */\r
1492                                                 M_PUSH( Addr1 );\r
1493                                                 TOS = -4;  /* FIXME Fix error code. */\r
1494                                         }\r
1495                                 }\r
1496                         }\r
1497                         endcase;\r
1498                                 \r
1499 /*\r
1500 ** RP@ and RP! are called secondaries so we must\r
1501 ** account for the return address pushed before calling.\r
1502 */\r
1503                 case ID_RP_FETCH:    /* ( -- rp , address of top of return stack ) */\r
1504                         PUSH_TOS;\r
1505                         TOS = (cell_t)TORPTR;  /* value before calling RP@ */\r
1506                         endcase;\r
1507                         \r
1508                 case ID_RP_STORE:    /* ( rp -- , address of top of return stack ) */\r
1509                         TORPTR = (cell_t *) TOS;\r
1510                         M_DROP;\r
1511                         endcase;\r
1512                         \r
1513                 case ID_ROLL: /* ( xu xu-1 xu-1 ... x0 u -- xu-1 xu-1 ... x0 xu ) */\r
1514                         {\r
1515                                 cell_t ri;\r
1516                                 cell_t *srcPtr, *dstPtr;\r
1517                                 Scratch = M_STACK(TOS);\r
1518                                 srcPtr = &M_STACK(TOS-1);\r
1519                                 dstPtr = &M_STACK(TOS);\r
1520                                 for( ri=0; ri<TOS; ri++ )\r
1521                                 {\r
1522                                         *dstPtr-- = *srcPtr--;\r
1523                                 }\r
1524                                 TOS = Scratch;\r
1525                                 STKPTR++;\r
1526                         }\r
1527                         endcase;\r
1528 \r
1529                 case ID_ROT:  /* ( a b c -- b c a ) */\r
1530                         Scratch = M_POP;    /* b */\r
1531                         Temp = M_POP;       /* a */\r
1532                         M_PUSH( Scratch );  /* b */\r
1533                         PUSH_TOS;           /* c */\r
1534                         TOS = Temp;         /* a */\r
1535                         endcase;\r
1536 \r
1537 /* Logical right shift */\r
1538                 case ID_RSHIFT:     { TOS = ((ucell_t)M_POP) >> TOS; } endcase;   \r
1539                 \r
1540 #ifndef PF_NO_SHELL\r
1541                 case ID_SAVE_FORTH_P:   /* ( $name Entry NameSize CodeSize -- err ) */\r
1542                         {\r
1543                                 cell_t NameSize, CodeSize, EntryPoint;\r
1544                                 CodeSize = TOS;\r
1545                                 NameSize = M_POP;\r
1546                                 EntryPoint = M_POP;\r
1547                                 ForthStringToC( gScratch, (char *) M_POP );\r
1548                                 TOS =  ffSaveForth( gScratch, EntryPoint, NameSize, CodeSize );\r
1549                         }\r
1550                         endcase;\r
1551 #endif\r
1552 \r
1553 /* Source     Stack\r
1554 ** EVALUATE    >IN  SourceID=(-1)  1111\r
1555 ** keyboard    >IN  SourceID=(0)   2222\r
1556 ** file        >IN  lineNumber filePos  SourceID=(fileID)\r
1557 */\r
1558                 case ID_SAVE_INPUT:  /* FIXME - finish */\r
1559                         {\r
1560                         }\r
1561                         endcase;\r
1562 \r
1563                 case ID_SP_FETCH:    /* ( -- sp , address of top of stack, sorta ) */\r
1564                         PUSH_TOS;\r
1565                         TOS = (cell_t)STKPTR;\r
1566                         endcase;\r
1567                         \r
1568                 case ID_SP_STORE:    /* ( sp -- , address of top of stack, sorta ) */\r
1569                         STKPTR = (cell_t *) TOS;\r
1570                         M_DROP;\r
1571                         endcase;\r
1572                         \r
1573                 case ID_STORE: /* ( n addr -- , write n to addr ) */\r
1574 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
1575                         if( IN_DICS( TOS ) )\r
1576                         {\r
1577                                 WRITE_CELL_DIC((cell_t *)TOS,M_POP);\r
1578                         }\r
1579                         else\r
1580                         {\r
1581                                 *((cell_t *)TOS) = M_POP;\r
1582                         }\r
1583 #else\r
1584                         *((cell_t *)TOS) = M_POP;\r
1585 #endif\r
1586                         M_DROP;\r
1587                         endcase;\r
1588 \r
1589                 case ID_SCAN: /* ( addr cnt char -- addr' cnt' ) */\r
1590                         Scratch = M_POP; /* cnt */\r
1591                         Temp = M_POP;    /* addr */\r
1592                         TOS = ffScan( (char *) Temp, Scratch, (char) TOS, &CharPtr );\r
1593                         M_PUSH((cell_t) CharPtr);\r
1594                         endcase;\r
1595                         \r
1596 #ifndef PF_NO_SHELL\r
1597                 case ID_SEMICOLON:\r
1598                         SAVE_REGISTERS;\r
1599                         Scratch = ffSemiColon();\r
1600                         LOAD_REGISTERS;\r
1601                         if( Scratch ) M_THROW( Scratch );\r
1602                         endcase;\r
1603 #endif /* !PF_NO_SHELL */\r
1604                         \r
1605                 case ID_SKIP: /* ( addr cnt char -- addr' cnt' ) */\r
1606                         Scratch = M_POP; /* cnt */\r
1607                         Temp = M_POP;    /* addr */\r
1608                         TOS = ffSkip( (char *) Temp, Scratch, (char) TOS, &CharPtr );\r
1609                         M_PUSH((cell_t) CharPtr);\r
1610                         endcase;\r
1611 \r
1612                 case ID_SOURCE:  /* ( -- c-addr num ) */\r
1613                         PUSH_TOS;\r
1614                         M_PUSH( (cell_t) gCurrentTask->td_SourcePtr );\r
1615                         TOS = (cell_t) gCurrentTask->td_SourceNum;\r
1616                         endcase;\r
1617                         \r
1618                 case ID_SOURCE_SET: /* ( c-addr num -- ) */\r
1619                         gCurrentTask->td_SourcePtr = (char *) M_POP;\r
1620                         gCurrentTask->td_SourceNum = TOS;\r
1621                         M_DROP;\r
1622                         endcase;\r
1623                         \r
1624                 case ID_SOURCE_ID:\r
1625                         PUSH_TOS;\r
1626                         TOS = ffConvertStreamToSourceID( gCurrentTask->td_InputStream ) ;\r
1627                         endcase;\r
1628                         \r
1629                 case ID_SOURCE_ID_POP:\r
1630                         PUSH_TOS;\r
1631                         TOS = ffConvertStreamToSourceID( ffPopInputStream() ) ;\r
1632                         endcase;\r
1633                         \r
1634                 case ID_SOURCE_ID_PUSH:  /* ( source-id -- ) */\r
1635                         TOS = (cell_t)ffConvertSourceIDToStream( TOS );\r
1636                         Scratch = ffPushInputStream((FileStream *) TOS );\r
1637                         if( Scratch )\r
1638                         {\r
1639                                 M_THROW(Scratch);\r
1640                         }\r
1641                         else M_DROP;\r
1642                         endcase;\r
1643                         \r
1644                 case ID_SWAP:\r
1645                         Scratch = TOS;\r
1646                         TOS = *STKPTR;\r
1647                         *STKPTR = Scratch;\r
1648                         endcase;\r
1649                         \r
1650                 case ID_TEST1:\r
1651                         PUSH_TOS;\r
1652                         M_PUSH( 0x11 );\r
1653                         M_PUSH( 0x22 );\r
1654                         TOS = 0x33;\r
1655                         endcase;\r
1656 \r
1657                 case ID_TEST2:\r
1658                         endcase;\r
1659 \r
1660                 case ID_THROW:  /* ( k*x err -- k*x | i*x err , jump to where CATCH was called ) */\r
1661                         if(TOS)\r
1662                         {\r
1663                                 M_THROW(TOS);\r
1664                         }\r
1665                         else M_DROP;\r
1666                         endcase;\r
1667 \r
1668 #ifndef PF_NO_SHELL\r
1669                 case ID_TICK:\r
1670                         PUSH_TOS;\r
1671                         CharPtr = (char *) ffWord( (char) ' ' );\r
1672                         TOS = ffFind( CharPtr, (ExecToken *) &Temp );\r
1673                         if( TOS == 0 )\r
1674                         {\r
1675                                 ERR("' could not find ");\r
1676                                 ioType( (char *) CharPtr+1, *CharPtr );\r
1677                                 M_THROW(-13);\r
1678                         }\r
1679                         else\r
1680                         {\r
1681                                 TOS = Temp;\r
1682                         }\r
1683                         endcase;\r
1684 #endif  /* !PF_NO_SHELL */\r
1685                         \r
1686                 case ID_TIMES: BINARY_OP( * ); endcase;\r
1687                         \r
1688                 case ID_TYPE:\r
1689                         Scratch = M_POP; /* addr */\r
1690                         ioType( (char *) Scratch, TOS );\r
1691                         M_DROP;\r
1692                         endcase;\r
1693 \r
1694                 case ID_TO_R:\r
1695                         M_R_PUSH( TOS );\r
1696                         M_DROP;\r
1697                         endcase;\r
1698 \r
1699                 case ID_VAR_BASE: DO_VAR(gVarBase); endcase;\r
1700                 case ID_VAR_CODE_BASE: DO_VAR(gCurrentDictionary->dic_CodeBase); endcase;\r
1701                 case ID_VAR_CODE_LIMIT: DO_VAR(gCurrentDictionary->dic_CodeLimit); endcase;\r
1702                 case ID_VAR_CONTEXT: DO_VAR(gVarContext); endcase;\r
1703                 case ID_VAR_DP: DO_VAR(gCurrentDictionary->dic_CodePtr.Cell); endcase;\r
1704                 case ID_VAR_ECHO: DO_VAR(gVarEcho); endcase;\r
1705                 case ID_VAR_HEADERS_BASE: DO_VAR(gCurrentDictionary->dic_HeaderBase); endcase;\r
1706                 case ID_VAR_HEADERS_LIMIT: DO_VAR(gCurrentDictionary->dic_HeaderLimit); endcase;\r
1707                 case ID_VAR_HEADERS_PTR: DO_VAR(gCurrentDictionary->dic_HeaderPtr); endcase;\r
1708                 case ID_VAR_NUM_TIB: DO_VAR(gCurrentTask->td_SourceNum); endcase;\r
1709                 case ID_VAR_OUT: DO_VAR(gCurrentTask->td_OUT); endcase;\r
1710                 case ID_VAR_STATE: DO_VAR(gVarState); endcase;\r
1711                 case ID_VAR_TO_IN: DO_VAR(gCurrentTask->td_IN); endcase;\r
1712                 case ID_VAR_TRACE_FLAGS: DO_VAR(gVarTraceFlags); endcase;\r
1713                 case ID_VAR_TRACE_LEVEL: DO_VAR(gVarTraceLevel); endcase;\r
1714                 case ID_VAR_TRACE_STACK: DO_VAR(gVarTraceStack); endcase;\r
1715                 case ID_VAR_RETURN_CODE: DO_VAR(gVarReturnCode); endcase;\r
1716 \r
1717                 case ID_WORD:\r
1718                         TOS = (cell_t) ffWord( (char) TOS );\r
1719                         endcase;\r
1720 \r
1721                 case ID_WORD_FETCH: /* ( waddr -- w ) */\r
1722 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
1723                         if( IN_DICS( TOS ) )\r
1724                         {\r
1725                                 TOS = (uint16_t) READ_SHORT_DIC((uint16_t *)TOS);\r
1726                         }\r
1727                         else\r
1728                         {\r
1729                                 TOS = *((uint16_t *)TOS);\r
1730                         }\r
1731 #else\r
1732                         TOS = *((uint16_t *)TOS);\r
1733 #endif\r
1734                         endcase;\r
1735 \r
1736                 case ID_WORD_STORE: /* ( w waddr -- ) */\r
1737                         \r
1738 #if (defined(PF_BIG_ENDIAN_DIC) || defined(PF_LITTLE_ENDIAN_DIC))\r
1739                         if( IN_DICS( TOS ) )\r
1740                         {\r
1741                                 WRITE_SHORT_DIC((uint16_t *)TOS,(uint16_t)M_POP);\r
1742                         }\r
1743                         else\r
1744                         {\r
1745                                 *((uint16_t *)TOS) = (uint16_t) M_POP;\r
1746                         }\r
1747 #else\r
1748                         *((uint16_t *)TOS) = (uint16_t) M_POP;\r
1749 #endif\r
1750                         M_DROP;\r
1751                         endcase;\r
1752 \r
1753                 case ID_XOR: BINARY_OP( ^ ); endcase;\r
1754                                 \r
1755                                 \r
1756 /* Branch is followed by an offset relative to address of offset. */\r
1757                 case ID_ZERO_BRANCH:\r
1758 DBUGX(("Before 0Branch: IP = 0x%x\n", InsPtr ));\r
1759                         if( TOS == 0 )\r
1760                         {\r
1761                                 M_BRANCH;\r
1762                         }\r
1763                         else\r
1764                         {\r
1765                                 InsPtr++;      /* skip over offset */\r
1766                         }\r
1767                         M_DROP;\r
1768 DBUGX(("After 0Branch: IP = 0x%x\n", InsPtr ));\r
1769                         endcase;\r
1770                         \r
1771                 default:\r
1772                         ERR("pfCatch: Unrecognised token = 0x");\r
1773                         ffDotHex(Token);\r
1774                         ERR(" at 0x");\r
1775                         ffDotHex((cell_t) InsPtr);\r
1776                         EMIT_CR;\r
1777                         InsPtr = 0;\r
1778                         endcase;\r
1779                 }\r
1780                 \r
1781                 if(InsPtr) Token = READ_CELL_DIC(InsPtr++);   /* Traverse to next token in secondary. */\r
1782                 \r
1783 #ifdef PF_DEBUG\r
1784                 M_DOTS;\r
1785 #endif\r
1786 \r
1787 #if 0\r
1788                 if( _CrtCheckMemory() == 0 )\r
1789                 {\r
1790                         ERR("_CrtCheckMemory abort: InsPtr = 0x");\r
1791                         ffDotHex((int)InsPtr);\r
1792                         ERR("\n");\r
1793                 }\r
1794 #endif\r
1795 \r
1796         } while( (InitialReturnStack - TORPTR) > 0 );\r
1797 \r
1798         SAVE_REGISTERS;\r
1799         \r
1800         return ExceptionReturnCode;\r
1801 }\r