gforth/cross.fs - view

File: [gforth] / gforth / cross.fs
Revision 1.124: download - view: text, annotated - select for diffs
Thu Mar 21 17:11:10 2002 UTC (22 years, 1 month ago) by jwilke
Branches: MAIN
CVS tags: HEAD

added optional write protection for memory regions

1: \ CROSS.FS The Cross-Compiler 06oct92py 2: \ Idea and implementation: Bernd Paysan (py) 3: 4: \ Copyright (C) 1995,1996,1997,1998,1999,2000 Free Software Foundation, Inc. 5: 6: \ This file is part of Gforth. 7: 8: \ Gforth is free software; you can redistribute it and/or 9: \ modify it under the terms of the GNU General Public License 10: \ as published by the Free Software Foundation; either version 2 11: \ of the License, or (at your option) any later version. 12: 13: \ This program is distributed in the hope that it will be useful, 14: \ but WITHOUT ANY WARRANTY; without even the implied warranty of 15: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16: \ GNU General Public License for more details. 17: 18: \ You should have received a copy of the GNU General Public License 19: \ along with this program; if not, write to the Free Software 20: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. 21: 22: 0 23: [IF] 24: 25: ToDo: 26: - Crossdoc destination ./doc/crossdoc.fd makes no sense when 27: cross.fs is used seperately. jaw 28: - Do we need this char translation with >address and in branchoffset? 29: (>body also affected) jaw 30: - MAXU etc. can be done with dlit, 31: 32: [THEN] 33: 34: hex 35: 36: \ debugging for compiling 37: 38: \ print stack at each colon definition 39: \ : : save-input cr bl word count type restore-input throw .s : ; 40: 41: \ print stack at each created word 42: \ : create save-input cr bl word count type restore-input throw .s create ; 43: 44: 45: \ \ ------------- Setup Vocabularies 46: 47: \ Remark: Vocabulary is not ANS, but it should work... 48: 49: Vocabulary Cross 50: Vocabulary Target 51: Vocabulary Ghosts 52: Vocabulary Minimal 53: only Forth also Target also also 54: definitions Forth 55: 56: : T previous Ghosts also Target ; immediate 57: : G Ghosts ; immediate 58: : H previous Forth also Cross ; immediate 59: 60: forth definitions 61: 62: : T previous Ghosts also Target ; immediate 63: : G Ghosts ; immediate 64: 65: 66: : >cross also Cross definitions previous ; 67: : >target also Target definitions previous ; 68: : >minimal also Minimal definitions previous ; 69: 70: H 71: 72: >CROSS 73: 74: \ Test against this definitions to find out whether we are cross-compiling 75: \ may be usefull for assemblers 76: 0 Constant gforth-cross-indicator 77: 78: \ find out whether we are compiling with gforth 79: 80: : defined? bl word find nip ; 81: defined? emit-file defined? toupper and \ drop 0 82: [IF] 83: \ use this in a gforth system 84: : \GFORTH ; immediate 85: : \ANSI postpone \ ; immediate 86: [ELSE] 87: : \GFORTH postpone \ ; immediate 88: : \ANSI ; immediate 89: [THEN] 90: 91: \ANSI : [IFUNDEF] defined? 0= postpone [IF] ; immediate 92: \ANSI : [IFDEF] defined? postpone [IF] ; immediate 93: 0 \ANSI drop 1 94: [IF] 95: : \G postpone \ ; immediate 96: : rdrop postpone r> postpone drop ; immediate 97: : name bl word count ; 98: : bounds over + swap ; 99: : scan >r BEGIN dup WHILE over c@ r@ <> WHILE 1 /string REPEAT THEN rdrop ; 100: : linked here over @ , swap ! ; 101: : alias create , DOES> @ EXECUTE ; 102: : defer ['] noop alias ; 103: : is state @ 104: IF ' >body postpone literal postpone ! 105: ELSE ' >body ! THEN ; immediate 106: : 0>= 0< 0= ; 107: : d<> rot <> -rot <> or ; 108: : toupper dup [char] a [char] z 1+ within IF [char] A [char] a - + THEN ; 109: Variable ebuf 110: : emit-file ( c fd -- ior ) swap ebuf c! ebuf 1 chars rot write-file ; 111: 0a Constant #lf 112: 0d Constant #cr 113: 114: [IFUNDEF] Warnings Variable Warnings [THEN] 115: 116: \ \ Number parsing 23feb93py 117: 118: \ number? number 23feb93py 119: 120: Variable dpl 121: 122: hex 123: Create bases 10 , 2 , A , 100 , 124: \ 16 2 10 character 125: 126: \ !! protect BASE saving wrapper against exceptions 127: : getbase ( addr u -- addr' u' ) 128: over c@ [char] $ - dup 4 u< 129: IF 130: cells bases + @ base ! 1 /string 131: ELSE 132: drop 133: THEN ; 134: 135: : sign? ( addr u -- addr u flag ) 136: over c@ [char] - = dup >r 137: IF 138: 1 /string 139: THEN 140: r> ; 141: 142: : s>unumber? ( addr u -- ud flag ) 143: over [char] ' = 144: IF \ a ' alone is rather unusual :-) 145: drop char+ c@ 0 true EXIT 146: THEN 147: base @ >r dpl on getbase 148: 0. 2swap 149: BEGIN ( d addr len ) 150: dup >r >number dup 151: WHILE \ there are characters left 152: dup r> - 153: WHILE \ the last >number parsed something 154: dup 1- dpl ! over c@ [char] . = 155: WHILE \ the current char is '.' 156: 1 /string 157: REPEAT THEN \ there are unparseable characters left 158: 2drop false 159: ELSE 160: rdrop 2drop true 161: THEN 162: r> base ! ; 163: 164: \ ouch, this is complicated; there must be a simpler way - anton 165: : s>number? ( addr len -- d f ) 166: \ converts string addr len into d, flag indicates success 167: sign? >r 168: s>unumber? 169: 0= IF 170: rdrop false 171: ELSE \ no characters left, all ok 172: r> 173: IF 174: dnegate 175: THEN 176: true 177: THEN ; 178: 179: : s>number ( addr len -- d ) 180: \ don't use this, there is no way to tell success 181: s>number? drop ; 182: 183: : snumber? ( c-addr u -- 0 / n -1 / d 0> ) 184: s>number? 0= 185: IF 186: 2drop false EXIT 187: THEN 188: dpl @ dup 0< IF 189: nip 190: ELSE 191: 1+ 192: THEN ; 193: 194: : number? ( string -- string 0 / n -1 / d 0> ) 195: dup >r count snumber? dup if 196: rdrop 197: else 198: r> swap 199: then ; 200: 201: : number ( string -- d ) 202: number? ?dup 0= abort" ?" 0< 203: IF 204: s>d 205: THEN ; 206: 207: [THEN] 208: 209: \ this provides assert( and struct stuff 210: \GFORTH [IFUNDEF] assert1( 211: \GFORTH also forth definitions require assert.fs previous 212: \GFORTH [THEN] 213: 214: >CROSS 215: 216: hex \ the defualt base for the cross-compiler is hex !! 217: \ Warnings off 218: 219: \ words that are generaly useful 220: 221: : KB 400 * ; 222: : >wordlist ( vocabulary-xt -- wordlist-struct ) 223: also execute get-order swap >r 1- set-order r> ; 224: 225: : umax 2dup u< IF swap THEN drop ; 226: : umin 2dup u> IF swap THEN drop ; 227: 228: : string, ( c-addr u -- ) 229: \ puts down string as cstring 230: dup c, here swap chars dup allot move ; 231: 232: : ," [char] " parse string, ; 233: 234: : SetValue ( n -- <name> ) 235: \G Same behaviour as "Value" if the <name> is not defined 236: \G Same behaviour as "to" if <name> is defined 237: \G SetValue searches in the current vocabulary 238: save-input bl word >r restore-input throw r> count 239: get-current search-wordlist 240: IF drop >r 241: \ we have to set current to be topmost context wordlist 242: get-order get-order get-current swap 1+ set-order 243: r> ['] to execute 244: set-order 245: ELSE Value THEN ; 246: 247: : DefaultValue ( n -- <name> ) 248: \G Same behaviour as "Value" if the <name> is not defined 249: \G DefaultValue searches in the current vocabulary 250: save-input bl word >r restore-input throw r> count 251: get-current search-wordlist 252: IF bl word drop 2drop ELSE Value THEN ; 253: 254: hex 255: 256: \ FIXME delete` 257: \ 1 Constant Cross-Flag \ to check whether assembler compiler plug-ins are 258: \ for cross-compiling 259: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!! 260: 261: \ FIXME move down 262: : comment? ( c-addr u -- c-addr u ) 263: 2dup s" (" compare 0= 264: IF postpone ( 265: ELSE 2dup s" \" compare 0= IF postpone \ THEN 266: THEN ; 267: 268: : X ( -- <name> ) 269: \G The next word in the input is a target word. 270: \G Equivalent to T <name> but without permanent 271: \G switch to target dictionary. Used as prefix e.g. for @, !, here etc. 272: bl word count [ ' target >wordlist ] Literal search-wordlist 273: IF state @ IF compile, ELSE execute THEN 274: ELSE -1 ABORT" Cross: access method not supported!" 275: THEN ; immediate 276: 277: \ Begin CROSS COMPILER: 278: 279: \ debugging 280: 281: 0 [IF] 282: 283: This implements debugflags for the cross compiler and the compiled 284: images. It works identical to the has-flags in the environment. 285: The debugflags are defined in a vocabluary. If the word exists and 286: its value is true, the flag is switched on. 287: 288: [THEN] 289: 290: >CROSS 291: 292: Vocabulary debugflags \ debug flags for cross 293: also debugflags get-order over 294: Constant debugflags-wl 295: set-order previous 296: 297: : DebugFlag 298: get-current >r debugflags-wl set-current 299: SetValue 300: r> set-current ; 301: 302: : Debug? ( adr u -- flag ) 303: \G return true if debug flag is defined or switched on 304: debugflags-wl search-wordlist 305: IF EXECUTE 306: ELSE false THEN ; 307: 308: : D? ( <name> -- flag ) 309: \G return true if debug flag is defined or switched on 310: \G while compiling we do not return the current value but 311: bl word count debug? ; 312: 313: : [d?] 314: \G compile the value-xt so the debug flag can be switched 315: \G the flag must exist! 316: bl word count debugflags-wl search-wordlist 317: IF compile, 318: ELSE -1 ABORT" unknown debug flag" 319: \ POSTPONE false 320: THEN ; immediate 321: 322: : symentry ( adr len taddr -- ) 323: \G Produce a symbol table (an optional symbol address 324: \G map) if wanted 325: [ [IFDEF] fd-symbol-table ] 326: base @ swap hex s>d <# 8 0 DO # LOOP #> fd-symbol-table write-file throw base ! 327: s" :" fd-symbol-table write-file throw 328: fd-symbol-table write-line throw 329: [ [ELSE] ] 330: 2drop drop 331: [ [THEN] ] ; 332: 333: 334: \ \ -------------------- source file 335: 336: decimal 337: 338: Variable cross-file-list 339: 0 cross-file-list ! 340: Variable target-file-list 341: 0 target-file-list ! 342: Variable host-file-list 343: 0 host-file-list ! 344: 345: cross-file-list Value file-list 346: 0 Value source-desc 347: 348: \ file loading 349: 350: : >fl-id 1 cells + ; 351: : >fl-name 2 cells + ; 352: 353: Variable filelist 0 filelist ! 354: Create NoFile ," #load-file#" 355: 356: : loadfile ( -- adr ) 357: source-desc ?dup IF >fl-name ELSE NoFile THEN ; 358: 359: : sourcefilename ( -- adr len ) 360: loadfile count ; 361: 362: \ANSI : sourceline# 0 ; 363: 364: \ \ -------------------- path handling from kernel/paths.fs 365: 366: \ paths.fs path file handling 03may97jaw 367: 368: \ -Changing the search-path: 369: \ fpath+ <path> adds a directory to the searchpath 370: \ fpath= <path>|<path> makes complete now searchpath 371: \ seperator is | 372: \ .fpath displays the search path 373: \ remark I: 374: \ a ./ in the beginning of filename is expanded to the directory the 375: \ current file comes from. ./ can also be included in the search-path! 376: \ ~+/ loads from the current working directory 377: 378: \ remark II: 379: \ if there is no sufficient space for the search path increase it! 380: 381: 382: \ -Creating custom paths: 383: 384: \ It is possible to use the search mechanism on yourself. 385: 386: \ Make a buffer for the path: 387: \ create mypath 100 chars , \ maximum length (is checked) 388: \ 0 , \ real len 389: \ 100 chars allot \ space for path 390: \ use the same functions as above with: 391: \ mypath path+ 392: \ mypath path= 393: \ mypath .path 394: 395: \ do a open with the search path: 396: \ open-path-file ( adr len path -- fd adr len ior ) 397: \ the file is opened read-only; if the file is not found an error is generated 398: 399: \ questions to: wilke@jwdt.com 400: 401: [IFUNDEF] +place 402: : +place ( adr len adr ) 403: 2dup >r >r 404: dup c@ char+ + swap move 405: r> r> dup c@ rot + swap c! ; 406: [THEN] 407: 408: [IFUNDEF] place 409: : place ( c-addr1 u c-addr2 ) 410: 2dup c! char+ swap move ; 411: [THEN] 412: 413: \ if we have path handling, use this and the setup of it 414: [IFUNDEF] open-fpath-file 415: 416: create sourcepath 1024 chars , 0 , 1024 chars allot \ !! make this dynamic 417: sourcepath value fpath 418: 419: : also-path ( adr len path^ -- ) 420: >r 421: \ len check 422: r@ cell+ @ over + r@ @ u> ABORT" path buffer too small!" 423: \ copy into 424: tuck r@ cell+ dup @ cell+ + swap cmove 425: \ make delimiter 426: 0 r@ cell+ dup @ cell+ + 2 pick + c! 1 + r> cell+ +! 427: ; 428: 429: : only-path ( adr len path^ -- ) 430: dup 0 swap cell+ ! also-path ; 431: 432: : path+ ( path-addr "dir" -- ) \ gforth 433: \G Add the directory @var{dir} to the search path @var{path-addr}. 434: name rot also-path ; 435: 436: : fpath+ ( "dir" ) \ gforth 437: \G Add directory @var{dir} to the Forth search path. 438: fpath path+ ; 439: 440: : path= ( path-addr "dir1|dir2|dir3" ) \ gforth 441: \G Make a complete new search path; the path separator is |. 442: name 2dup bounds ?DO i c@ [char] | = IF 0 i c! THEN LOOP 443: rot only-path ; 444: 445: : fpath= ( "dir1|dir2|dir3" ) \ gforth 446: \G Make a complete new Forth search path; the path separator is |. 447: fpath path= ; 448: 449: : path>counted cell+ dup cell+ swap @ ; 450: 451: : next-path ( adr len -- adr2 len2 ) 452: 2dup 0 scan 453: dup 0= IF 2drop 0 -rot 0 -rot EXIT THEN 454: >r 1+ -rot r@ 1- -rot 455: r> - ; 456: 457: : previous-path ( path^ -- ) 458: dup path>counted 459: BEGIN tuck dup WHILE repeat ; 460: 461: : .path ( path-addr -- ) \ gforth 462: \G Display the contents of the search path @var{path-addr}. 463: path>counted 464: BEGIN next-path dup WHILE type space REPEAT 2drop 2drop ; 465: 466: : .fpath ( -- ) \ gforth 467: \G Display the contents of the Forth search path. 468: fpath .path ; 469: 470: : absolut-path? ( addr u -- flag ) \ gforth 471: \G A path is absolute if it starts with a / or a ~ (~ expansion), 472: \G or if it is in the form ./*, extended regexp: ^[/~]|./, or if 473: \G it has a colon as second character ("C:..."). Paths simply 474: \G containing a / are not absolute! 475: 2dup 2 u> swap 1+ c@ [char] : = and >r \ dos absoulte: c:/.... 476: over c@ [char] / = >r 477: over c@ [char] ~ = >r 478: \ 2dup 3 min S" ../" compare 0= r> or >r \ not catered for in expandtopic 479: 2 min S" ./" compare 0= 480: r> r> r> or or or ; 481: 482: Create ofile 0 c, 255 chars allot 483: Create tfile 0 c, 255 chars allot 484: 485: : pathsep? dup [char] / = swap [char] \ = or ; 486: 487: : need/ ofile dup c@ + c@ pathsep? 0= IF s" /" ofile +place THEN ; 488: 489: : extractpath ( adr len -- adr len2 ) 490: BEGIN dup WHILE 1- 491: 2dup + c@ pathsep? IF EXIT THEN 492: REPEAT ; 493: 494: : remove~+ ( -- ) 495: ofile count 3 min s" ~+/" compare 0= 496: IF 497: ofile count 3 /string ofile place 498: THEN ; 499: 500: : expandtopic ( -- ) \ stack effect correct? - anton 501: \ expands "./" into an absolute name 502: ofile count 2 min s" ./" compare 0= 503: IF 504: ofile count 1 /string tfile place 505: 0 ofile c! sourcefilename extractpath ofile place 506: ofile c@ IF need/ THEN 507: tfile count over c@ pathsep? IF 1 /string THEN 508: ofile +place 509: THEN ; 510: 511: : compact.. ( adr len -- adr2 len2 ) 512: \ deletes phrases like "xy/.." out of our directory name 2dec97jaw 513: over swap 514: BEGIN dup WHILE 515: dup >r '/ scan 2dup 4 min s" /../" compare 0= 516: IF 517: dup r> - >r 4 /string over r> + 4 - 518: swap 2dup + >r move dup r> over - 519: ELSE 520: rdrop dup 1 min /string 521: THEN 522: REPEAT drop over - ; 523: 524: : reworkdir ( -- ) 525: remove~+ 526: ofile count compact.. 527: nip ofile c! ; 528: 529: : open-ofile ( -- fid ior ) 530: \G opens the file whose name is in ofile 531: expandtopic reworkdir 532: ofile count r/o open-file ; 533: 534: : check-path ( adr1 len1 adr2 len2 -- fd 0 | 0 <>0 ) 535: 0 ofile ! >r >r ofile place need/ 536: r> r> ofile +place 537: open-ofile ; 538: 539: : open-path-file ( addr1 u1 path-addr -- wfileid addr2 u2 0 | ior ) \ gforth 540: \G Look in path @var{path-addr} for the file specified by @var{addr1 u1}. 541: \G If found, the resulting path and an open file descriptor 542: \G are returned. If the file is not found, @var{ior} is non-zero. 543: >r 544: 2dup absolut-path? 545: IF rdrop 546: ofile place open-ofile 547: dup 0= IF >r ofile count r> THEN EXIT 548: ELSE r> path>counted 549: BEGIN next-path dup 550: WHILE 5 pick 5 pick check-path 551: 0= IF >r 2drop 2drop r> ofile count 0 EXIT ELSE drop THEN 552: REPEAT 553: 2drop 2drop 2drop -38 554: THEN ; 555: 556: : open-fpath-file ( addr1 u1 -- wfileid addr2 u2 0 | ior ) \ gforth 557: \G Look in the Forth search path for the file specified by @var{addr1 u1}. 558: \G If found, the resulting path and an open file descriptor 559: \G are returned. If the file is not found, @var{ior} is non-zero. 560: fpath open-path-file ; 561: 562: fpath= ~+ 563: 564: [THEN] 565: 566: \ \ -------------------- include require 13may99jaw 567: 568: >CROSS 569: 570: : add-included-file ( adr len -- adr ) 571: dup >fl-name char+ allocate throw >r 572: file-list @ r@ ! r@ file-list ! 573: r@ >fl-name place r> ; 574: 575: : included? ( c-addr u -- f ) 576: file-list 577: BEGIN @ dup 578: WHILE >r 2dup r@ >fl-name count compare 0= 579: IF rdrop 2drop true EXIT THEN 580: r> 581: REPEAT 582: 2drop drop false ; 583: 584: false DebugFlag showincludedfiles 585: 586: : included1 ( fd adr u -- ) 587: \ include file adr u / fd 588: \ we don't use fd with include-file, because the forth system 589: \ doesn't know the name of the file to get a nice error report 590: [d?] showincludedfiles 591: IF cr ." Including: " 2dup type ." ..." THEN 592: rot close-file throw 593: source-desc >r 594: add-included-file to source-desc 595: sourcefilename 596: ['] included catch 597: r> to source-desc 598: throw ; 599: 600: : included ( adr len -- ) 601: cross-file-list to file-list 602: open-fpath-file throw 603: included1 ; 604: 605: : required ( adr len -- ) 606: cross-file-list to file-list 607: open-fpath-file throw \ 2dup cr ." R:" type 608: 2dup included? 609: IF 2drop close-file throw 610: ELSE included1 611: THEN ; 612: 613: : include bl word count included ; 614: 615: : require bl word count required ; 616: 617: 0 [IF] 618: 619: also forth definitions previous 620: 621: : included ( adr len -- ) included ; 622: 623: : required ( adr len -- ) required ; 624: 625: : include include ; 626: 627: : require require ; 628: 629: [THEN] 630: 631: >CROSS 632: hex 633: 634: \ \ -------------------- Error Handling 05aug97jaw 635: 636: \ Flags 637: 638: also forth definitions \ these values may be predefined before 639: \ the cross-compiler is loaded 640: 641: false DefaultValue stack-warn \ check on empty stack at any definition 642: false DefaultValue create-forward-warn \ warn on forward declaration of created words 643: 644: previous >CROSS 645: 646: : .dec 647: base @ decimal swap . base ! ; 648: 649: : .sourcepos 650: cr sourcefilename type ." :" 651: sourceline# .dec ; 652: 653: : warnhead 654: \G display error-message head 655: \G perhaps with linenumber and filename 656: .sourcepos ." Warning: " ; 657: 658: : empty? depth IF .sourcepos ." Stack not empty!" THEN ; 659: 660: stack-warn [IF] 661: : defempty? empty? ; 662: [ELSE] 663: : defempty? ; immediate 664: [THEN] 665: 666: \ \ -------------------- Compiler Plug Ins 01aug97jaw 667: 668: >CROSS 669: 670: \ Compiler States 671: 672: Variable comp-state 673: 0 Constant interpreting 674: 1 Constant compiling 675: 2 Constant resolving 676: 3 Constant assembling 677: 678: : compiling? comp-state @ compiling = ; 679: 680: : pi-undefined -1 ABORT" Plugin undefined" ; 681: 682: : Plugin ( -- : pluginname ) 683: Create 684: \ for normal cross-compiling only one action 685: \ exists, this fields are identical. For the instant 686: \ simulation environment we need, two actions for each plugin 687: \ the target one and the one that generates the simulation code 688: ['] pi-undefined , \ action 689: ['] pi-undefined , \ target plugin action 690: 8765 , \ plugin magic 691: DOES> perform ; 692: 693: Plugin DummyPlugin 694: 695: : 'PI ( -- addr : pluginname ) 696: ' >body dup 2 cells + @ 8765 <> ABORT" not a plugin" ; 697: 698: : plugin-of ( xt -- : pluginname ) 699: dup 'PI 2! ; 700: 701: : action-of ( xt -- : plunginname ) 702: 'PI cell+ ! ; 703: 704: : TPA ( -- : plugin ) 705: \ target plugin action 706: \ executes current target action of plugin 707: 'PI cell+ POSTPONE literal POSTPONE perform ; immediate 708: 709: Variable ppi-temp 0 ppi-temp ! 710: 711: : pa: 712: \g define plugin action 713: ppi-temp @ ABORT" pa: definition not closed" 714: 'PI ppi-temp ! :noname ; 715: 716: : ;pa 717: \g end a definition for plugin action 718: POSTPONE ; ppi-temp @ ! 0 ppi-temp ! ; immediate 719: 720: 721: Plugin dlit, ( d -- ) \ compile numerical value the target 722: Plugin lit, ( n -- ) 723: Plugin alit, ( n -- ) 724: 725: Plugin branch, ( target-addr -- ) \ compiles a branch 726: Plugin ?branch, ( target-addr -- ) \ compiles a ?branch 727: Plugin branchmark, ( -- branch-addr ) \ reserves room for a branch 728: Plugin ?branchmark, ( -- branch-addr ) \ reserves room for a ?branch 729: Plugin ?domark, ( -- branch-addr ) \ reserves room for a ?do branch 730: Plugin branchto, ( -- ) \ actual program position is target of a branch (do e.g. alignment) 731: ' NOOP plugin-of branchto, 732: Plugin branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark 733: Plugin branchtomark, ( -- target-addr ) \ marks a branch destination 734: 735: Plugin colon, ( tcfa -- ) \ compiles call to tcfa at current position 736: Plugin prim, ( tcfa -- ) \ compiles primitive invocation 737: Plugin colonmark, ( -- addr ) \ marks a colon call 738: Plugin colon-resolve ( tcfa addr -- ) 739: 740: Plugin addr-resolve ( target-addr addr -- ) 741: Plugin doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt ) 742: 743: Plugin ncontrols? ( [ xn ... x1 ] n -- ) \ checks wheter n control structures are open 744: Plugin if, ( -- if-token ) 745: Plugin else, ( if-token -- if-token ) 746: Plugin then, ( if-token -- ) 747: Plugin ahead, 748: Plugin begin, 749: Plugin while, 750: Plugin until, 751: Plugin again, 752: Plugin repeat, 753: Plugin cs-swap ( x1 x2 -- x2 x1 ) 754: 755: Plugin case, ( -- n ) 756: Plugin of, ( n -- x1 n ) 757: Plugin endof, ( x1 n -- x2 n ) 758: Plugin endcase, ( x1 .. xn n -- ) 759: 760: Plugin do, ( -- do-token ) 761: Plugin ?do, ( -- ?do-token ) 762: Plugin for, ( -- for-token ) 763: Plugin loop, ( do-token / ?do-token -- ) 764: Plugin +loop, ( do-token / ?do-token -- ) 765: Plugin next, ( for-token ) 766: Plugin leave, ( -- ) 767: Plugin ?leave, ( -- ) 768: 769: Plugin ca>native \ Convert a code address to the processors 770: \ native address. This is used in doprim, and 771: \ code/code: primitive definitions word to 772: \ convert the addresses. 773: \ The only target where we need this is the misc 774: \ which is a 16 Bit processor with word addresses 775: \ but the forth system we build has a normal byte 776: \ addressed memory model 777: 778: Plugin doprim, \ compiles start of a primitive 779: Plugin docol, \ compiles start of a colon definition 780: Plugin doer, 781: Plugin fini, \ compiles end of definition ;s 782: Plugin doeshandler, 783: Plugin dodoes, 784: 785: Plugin colon-start 786: ' noop plugin-of colon-start 787: Plugin colon-end 788: ' noop plugin-of colon-end 789: 790: Plugin ]comp \ starts compilation 791: ' noop plugin-of ]comp 792: Plugin comp[ \ ends compilation 793: ' noop plugin-of comp[ 794: 795: Plugin t>body \ we need the system >body 796: \ and the target >body 797: 798: >TARGET 799: : >body t>body ; 800: 801: 802: \ Ghost Builder 06oct92py 803: 804: >CROSS 805: hex 806: \ Values for ghost magic 807: 4711 Constant <fwd> 4712 Constant <res> 808: 4713 Constant <imm> 4714 Constant <do:> 809: 4715 Constant <skip> 810: 811: \ Bitmask for ghost flags 812: 1 Constant <unique> 813: 2 Constant <primitive> 814: 815: \ FXIME: move this to general stuff? 816: : set-flag ( addr flag -- ) 817: over @ or swap ! ; 818: 819: : reset-flag ( addr flag -- ) 820: invert over @ and swap ! ; 821: 822: : get-flag ( addr flag -- f ) 823: swap @ and 0<> ; 824: 825: 826: Struct 827: 828: \ link to next ghost (always the first element) 829: cell% field >next-ghost 830: 831: \ type of ghost 832: cell% field >magic 833: 834: \ pointer where ghost is in target, or if unresolved 835: \ points to the where we have to resolve (linked-list) 836: cell% field >link 837: 838: \ execution semantics (while target compiling) of ghost 839: cell% field >exec 840: 841: \ compilation action of this ghost; this is what is 842: \ done to compile a call (or whatever) to this definition. 843: \ E.g. >comp contains the semantic of postpone s" 844: \ whereas >exec-compile contains the semantic of s" 845: cell% field >comp 846: 847: \ Compilation sematics (while parsing) of this ghost. E.g. 848: \ "\" will skip the rest of line. 849: \ These semantics are defined by Cond: and 850: \ if a word is made immediate in instant, then the >exec2 field 851: \ gets copied to here 852: cell% field >exec-compile 853: 854: \ Additional execution semantics of this ghost. This is used 855: \ for code generated by instant and for the doer-xt of created 856: \ words 857: cell% field >exec2 858: 859: cell% field >created 860: 861: \ the xt of the created ghost word itself 862: cell% field >ghost-xt 863: 864: \ pointer to the counted string of the assiciated 865: \ assembler label 866: cell% field >asm-name 867: 868: \ mapped primitives have a special address, so 869: \ we are able to detect them 870: cell% field >asm-dummyaddr 871: 872: \ for builder (create, variable...) words 873: \ the execution symantics of words built are placed here 874: \ this is a doer ghost or a dummy ghost 875: cell% field >do:ghost 876: 877: cell% field >ghost-flags 878: 879: cell% field >ghost-name 880: 881: End-Struct ghost-struct 882: 883: Variable ghost-list 884: 0 ghost-list ! 885: 886: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes> 887: \ Variable last-ghost \ last ghost that is created 888: Variable last-header-ghost \ last ghost definitions with header 889: 890: \ space for ghosts resolve structure 891: \ we create ghosts in a sepearte space 892: \ and not to the current host dp, because this 893: \ gives trouble with instant while compiling and creating 894: \ a ghost for a forward reference 895: \ BTW: we cannot allocate another memory region 896: \ because allot will check the overflow!! 897: Variable cross-space-dp 898: Create cross-space 250000 allot here 100 allot align 899: Constant cross-space-end 900: cross-space cross-space-dp ! 901: Variable cross-space-dp-orig 902: 903: : cross-space-used cross-space-dp @ cross-space - ; 904: 905: : >space ( -- ) 906: dp @ cross-space-dp-orig ! 907: cross-space-dp @ dp ! ; 908: 909: : space> ( -- ) 910: dp @ dup cross-space-dp ! 911: cross-space-end u> ABORT" CROSS: cross-space overflow" 912: cross-space-dp-orig @ dp ! ; 913: 914: \ this is just for debugging, to see this in the backtrace 915: : execute-exec execute ; 916: : execute-exec2 execute ; 917: : execute-exec-compile execute ; 918: 919: : NoExec 920: executed-ghost @ >exec2 @ 921: ?dup 922: IF execute-exec2 923: ELSE true ABORT" CROSS: Don't execute ghost, or immediate target word" 924: THEN ; 925: 926: Defer is-forward 927: 928: : (ghostheader) ( -- ) 929: ghost-list linked <fwd> , 0 , ['] NoExec , ['] is-forward , 930: 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , ; 931: 932: : ghostheader ( -- ) (ghostheader) 0 , ; 933: 934: ' Ghosts >wordlist Constant ghosts-wordlist 935: 936: \ the current wordlist for ghost definitions in the host 937: ghosts-wordlist Value current-ghosts 938: 939: : Make-Ghost ( "name" -- ghost ) 940: >space 941: \ save current and create in ghost vocabulary 942: get-current >r current-ghosts set-current 943: >in @ Create >in ! 944: \ some forth systems like iForth need the immediate directly 945: \ after the word is created 946: \ restore current 947: r> set-current 948: here (ghostheader) 949: bl word count string, align 950: space> 951: \ set ghost-xt field by doing a search 952: dup >ghost-name count 953: current-ghosts search-wordlist 954: 0= ABORT" CROSS: Just created, must be there!" 955: over >ghost-xt ! 956: DOES> 957: dup executed-ghost ! 958: >exec @ execute-exec ; 959: 960: \ ghost words 14oct92py 961: \ changed: 10may93py/jaw 962: 963: Defer search-ghosts 964: 965: : (search-ghosts) ( adr len -- cfa true | 0 ) 966: current-ghosts search-wordlist ; 967: 968: ' (search-ghosts) IS search-ghosts 969: 970: : gsearch ( addr len -- ghost true | 0 ) 971: search-ghosts 972: dup IF swap >body swap THEN ; 973: 974: : gfind ( string -- ghost true / string false ) 975: \ searches for string in word-list ghosts 976: \ dup count type space 977: dup >r count gsearch 978: dup IF rdrop ELSE r> swap THEN ; 979: 980: : gdiscover ( xt -- ghost true | xt false ) 981: >r ghost-list 982: BEGIN @ dup 983: WHILE dup >magic @ <fwd> <> 984: IF dup >link @ r@ = 985: IF rdrop true EXIT THEN 986: THEN 987: REPEAT 988: drop r> false ; 989: 990: : xt>ghost ( xt -- ghost ) 991: gdiscover 0= ABORT" CROSS: ghost not found for this xt" ; 992: 993: : Ghost ( "name" -- ghost ) 994: >in @ bl word gfind IF nip EXIT THEN 995: drop >in ! Make-Ghost ; 996: 997: : >ghostname ( ghost -- adr len ) 998: >ghost-name count ; 999: 1000: : forward? ( ghost -- flag ) 1001: >magic @ <fwd> = ; 1002: 1003: : undefined? ( ghost -- flag ) 1004: >magic @ dup <fwd> = swap <skip> = or ; 1005: 1006: : immediate? ( ghost -- flag ) 1007: >magic @ <imm> = ; 1008: 1009: Variable TWarnings 1010: TWarnings on 1011: Variable Exists-Warnings 1012: Exists-Warnings on 1013: 1014: : exists-warning ( ghost -- ghost ) 1015: TWarnings @ Exists-Warnings @ and 1016: IF dup >ghostname warnhead type ." exists " THEN ; 1017: 1018: \ : HeaderGhost Ghost ; 1019: 1020: Variable reuse-ghosts reuse-ghosts off 1021: 1022: : HeaderGhost ( "name" -- ghost ) 1023: >in @ 1024: bl word count 1025: \ 2dup type space 1026: current-ghosts search-wordlist 1027: IF >body dup undefined? reuse-ghosts @ or 1028: IF nip EXIT 1029: ELSE exists-warning 1030: THEN 1031: drop >in ! 1032: ELSE >in ! 1033: THEN 1034: \ we keep the execution semantics of the prviously 1035: \ defined words, this is a workaround 1036: \ for the redefined \ until vocs work 1037: Make-Ghost ; 1038: 1039: : .ghost ( ghost -- ) >ghostname type ; 1040: 1041: \ ' >ghostname ALIAS @name 1042: 1043: : findghost ( "ghostname" -- ghost ) 1044: bl word gfind 0= ABORT" CROSS: Ghost don't exists" ; 1045: 1046: : [G'] ( -- ghost : name ) 1047: \G ticks a ghost and returns its address 1048: findghost 1049: state @ IF postpone literal THEN ; immediate 1050: 1051: : g>xt ( ghost -- xt ) 1052: \G Returns the xt (cfa) of a ghost. Issues a warning if undefined. 1053: dup undefined? ABORT" CROSS: forward " >link @ ; 1054: 1055: : g>body ( ghost -- body ) 1056: \G Returns the body-address (pfa) of a ghost. 1057: \G Issues a warning if undefined (a forward-reference). 1058: g>xt X >body ; 1059: 1060: 1 Constant <label> 1061: 1062: Struct 1063: \ bitmask of address type (not used for now) 1064: cell% field addr-type 1065: \ if this address is an xt, this field points to the ghost 1066: cell% field addr-xt-ghost 1067: \ a bit mask that tells as what part of the cell 1068: \ is refenced from an address pointer, used for assembler generation 1069: cell% field addr-refs 1070: End-Struct addr-struct 1071: 1072: : %allocerase ( align size -- addr ) 1073: dup >r %alloc dup r> erase ; 1074: 1075: \ returns the addr struct, define it if 0 reference 1076: : define-addr-struct ( addr -- struct-addr ) 1077: dup @ ?dup IF nip EXIT THEN 1078: addr-struct %allocerase tuck swap ! ; 1079: 1080: >cross 1081: 1082: \ Predefined ghosts 12dec92py 1083: 1084: Ghost - drop \ need a ghost otherwise "-" would be treated as a number 1085: 1086: Ghost 0= drop 1087: Ghost branch Ghost ?branch 2drop 1088: Ghost unloop Ghost ;S 2drop 1089: Ghost lit Ghost ! 2drop 1090: Ghost noop drop 1091: Ghost over Ghost = Ghost drop 2drop drop 1092: Ghost 2drop drop 1093: Ghost 2dup drop 1094: Ghost call drop 1095: Ghost @ drop 1096: Ghost useraddr drop 1097: Ghost execute drop 1098: Ghost + drop 1099: Ghost decimal drop 1100: Ghost hex drop 1101: Ghost lit@ drop 1102: Ghost lit-perform drop 1103: Ghost lit+ drop 1104: Ghost does-exec drop 1105: 1106: Ghost :docol Ghost :doesjump Ghost :dodoes 2drop drop 1107: Ghost :dovar drop 1108: 1109: \ \ Parameter for target systems 06oct92py 1110: 1111: 1112: \ we define it ans like... 1113: wordlist Constant target-environment 1114: 1115: \ save information of current dictionary to restore with environ> 1116: Variable env-current 1117: 1118: : >ENVIRON get-current env-current ! target-environment set-current ; 1119: : ENVIRON> env-current @ set-current ; 1120: 1121: >TARGET 1122: 1123: : environment? ( addr len -- [ x ] true | false ) 1124: \G returns the content of environment variable and true or 1125: \G false if not present 1126: target-environment search-wordlist 1127: IF EXECUTE true ELSE false THEN ; 1128: 1129: : $has? ( addr len -- x | false ) 1130: \G returns the content of environment variable 1131: \G or false if not present 1132: T environment? H dup IF drop THEN ; 1133: 1134: : e? ( "name" -- x ) 1135: \G returns the content of environment variable. 1136: \G The variable is expected to exist. If not, issue an error. 1137: bl word count T environment? H 1138: 0= ABORT" environment variable not defined!" ; 1139: 1140: : has? ( "name" --- x | false ) 1141: \G returns the content of environment variable 1142: \G or false if not present 1143: bl word count T $has? H ; 1144: 1145: 1146: >ENVIRON get-order get-current swap 1+ set-order 1147: true SetValue compiler 1148: true SetValue cross 1149: true SetValue standard-threading 1150: >TARGET previous 1151: 1152: 0 1153: [IFDEF] mach-file drop mach-file count 1 [THEN] 1154: [IFDEF] machine-file drop machine-file 1 [THEN] 1155: [IF] included hex 1156: [ELSE] cr ." No machine description!" ABORT 1157: [THEN] 1158: 1159: >ENVIRON 1160: 1161: T has? ec H 1162: [IF] 1163: false DefaultValue relocate 1164: false DefaultValue file 1165: false DefaultValue OS 1166: false DefaultValue prims 1167: false DefaultValue floating 1168: false DefaultValue glocals 1169: false DefaultValue dcomps 1170: false DefaultValue hash 1171: false DefaultValue xconds 1172: false DefaultValue header 1173: false DefaultValue backtrace 1174: false DefaultValue new-input 1175: false DefaultValue peephole 1176: [THEN] 1177: 1178: true DefaultValue interpreter 1179: true DefaultValue ITC 1180: false DefaultValue rom 1181: true DefaultValue standardthreading 1182: 1183: >TARGET 1184: s" relocate" T environment? H 1185: \ JAW why set NIL to this?! 1186: [IF] drop \ SetValue NIL 1187: [ELSE] >ENVIRON X NIL SetValue relocate 1188: [THEN] 1189: >TARGET 1190: 1191: 0 Constant NIL 1192: 1193: >CROSS 1194: 1195: \ \ Create additional parameters 19jan95py 1196: 1197: \ currently cross only works for host machines with address-unit-bits 1198: \ eual to 8 because of s! and sc! 1199: \ but I start to query the environment just to modularize a little bit 1200: 1201: : check-address-unit-bits ( -- ) 1202: \ s" ADDRESS-UNIT-BITS" environment? 1203: \ IF 8 <> ELSE true THEN 1204: \ ABORT" ADDRESS-UNIT-BITS unknown or not equal to 8!" 1205: 1206: \ shit, this doesn't work because environment? is only defined for 1207: \ gforth.fi and not kernl???.fi 1208: ; 1209: 1210: check-address-unit-bits 1211: 8 Constant bits/byte \ we define: byte is address-unit 1212: 1213: 1 bits/byte lshift Constant maxbyte 1214: \ this sets byte size for the target machine, (probably right guess) jaw 1215: 1216: T 1217: NIL Constant TNIL 1218: cell Constant tcell 1219: cell<< Constant tcell<< 1220: cell>bit Constant tcell>bit 1221: bits/char Constant tbits/char 1222: bits/char H bits/byte T / 1223: Constant tchar 1224: float Constant tfloat 1225: 1 bits/char lshift Constant tmaxchar 1226: [IFUNDEF] bits/byte 1227: 8 Constant tbits/byte 1228: [ELSE] 1229: bits/byte Constant tbits/byte 1230: [THEN] 1231: H 1232: tbits/char bits/byte / Constant tbyte 1233: 1234: 1235: \ Variables 06oct92py 1236: 1237: Variable image 1238: Variable (tlast) 1239: (tlast) Value tlast TNIL tlast ! \ Last name field 1240: Variable tlastcfa \ Last code field 1241: Variable bit$ 1242: 1243: \ statistics 10jun97jaw 1244: 1245: Variable headers-named 0 headers-named ! 1246: Variable user-vars 0 user-vars ! 1247: 1248: : target>bitmask-size ( u1 -- u2 ) 1249: 1- tcell>bit rshift 1+ ; 1250: 1251: : allocatetarget ( size -- adr ) 1252: dup allocate ABORT" CROSS: No memory for target" 1253: swap over swap erase ; 1254: 1255: \ \ memregion.fs 1256: 1257: 1258: Variable last-defined-region \ pointer to last defined region 1259: Variable region-link \ linked list with all regions 1260: Variable mirrored-link \ linked list for mirrored regions 1261: 0 dup mirrored-link ! region-link ! 1262: 1263: : >rname 8 cells + ; 1264: : >rbm 4 cells + ; \ bitfield per cell witch indicates relocation 1265: : >rmem 5 cells + ; 1266: : >rtype 6 cells + ; \ field per cell witch points to a type struct 1267: : >rrom 7 cells + ; \ a -1 indicates that this region is rom 1268: : >rlink 3 cells + ; 1269: : >rdp 2 cells + ; 1270: : >rlen cell+ ; 1271: : >rstart ; 1272: 1273: : (region) ( addr len region -- ) 1274: \G change startaddress and length of an existing region 1275: >r r@ last-defined-region ! 1276: r@ >rlen ! dup r@ >rstart ! r> >rdp ! ; 1277: 1278: : region ( addr len -- "name" ) 1279: \G create a new region 1280: \ check whether predefined region exists 1281: save-input bl word find >r >r restore-input throw r> r> 0= 1282: IF \ make region 1283: drop 1284: save-input create restore-input throw 1285: here last-defined-region ! 1286: over ( startaddr ) , ( length ) , ( dp ) , 1287: region-link linked 0 , 0 , 0 , 0 , bl word count string, 1288: ELSE \ store new parameters in region 1289: bl word drop 1290: >body (region) 1291: THEN ; 1292: 1293: : borders ( region -- startaddr endaddr ) 1294: \G returns lower and upper region border 1295: dup >rstart @ swap >rlen @ over + ; 1296: 1297: : extent ( region -- startaddr len ) 1298: \G returns the really used area 1299: dup >rstart @ swap >rdp @ over - ; 1300: 1301: : area ( region -- startaddr totallen ) 1302: \G returns the total area 1303: dup >rstart @ swap >rlen @ ; 1304: 1305: : mirrored ( -- ) 1306: \G mark last defined region as mirrored 1307: mirrored-link 1308: align linked last-defined-region @ , ; 1309: 1310: : writeprotected 1311: \G mark a region as write protected 1312: -1 last-defined-region @ >rrom ! ; 1313: 1314: : .addr ( u -- ) 1315: \G prints a 16 or 32 Bit nice hex value 1316: base @ >r hex 1317: tcell 2 u> 1318: IF s>d <# # # # # [char] . hold # # # # #> type 1319: ELSE s>d <# # # # # # #> type 1320: THEN r> base ! space ; 1321: 1322: : .regions \G display region statistic 1323: 1324: \ we want to list the regions in the right order 1325: \ so first collect all regions on stack 1326: 0 region-link @ 1327: BEGIN dup WHILE dup @ REPEAT drop 1328: BEGIN dup 1329: WHILE cr 1330: 0 >rlink - >r 1331: r@ >rname count tuck type 1332: 12 swap - 0 max spaces space 1333: ." Start: " r@ >rstart @ dup .addr space 1334: ." End: " r@ >rlen @ + .addr space 1335: ." DP: " r> >rdp @ .addr 1336: REPEAT drop 1337: s" rom" T $has? H 0= ?EXIT 1338: cr ." Mirrored:" 1339: mirrored-link @ 1340: BEGIN dup 1341: WHILE space dup cell+ @ >rname count type @ 1342: REPEAT drop cr 1343: ; 1344: 1345: \ -------- predefined regions 1346: 1347: 0 0 region address-space 1348: \ total memory addressed and used by the target system 1349: 1350: 0 0 region dictionary 1351: \ rom area for the compiler 1352: 1353: T has? rom H 1354: [IF] 1355: 0 0 region ram-dictionary mirrored 1356: \ ram area for the compiler 1357: [ELSE] 1358: ' dictionary ALIAS ram-dictionary 1359: [THEN] 1360: 1361: 0 0 region return-stack 1362: 1363: 0 0 region data-stack 1364: 1365: 0 0 region tib-region 1366: 1367: ' dictionary ALIAS rom-dictionary 1368: 1369: 1370: : setup-target ( -- ) \G initialize target's memory space 1371: s" rom" T $has? H 1372: IF \ check for ram and rom... 1373: \ address-space area nip 0<> 1374: ram-dictionary area nip 0<> 1375: rom-dictionary area nip 0<> 1376: and 0= 1377: ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!" 1378: THEN 1379: address-space area nip 1380: IF 1381: address-space area 1382: ELSE 1383: dictionary area 1384: THEN 1385: nip 0= 1386: ABORT" CROSS: define at least address-space or dictionary!!" 1387: 1388: \ allocate target for each region 1389: region-link 1390: BEGIN @ dup 1391: WHILE dup 1392: 0 >rlink - >r 1393: r@ >rlen @ 1394: IF \ allocate mem 1395: r@ >rlen @ allocatetarget dup image ! 1396: r@ >rmem ! 1397: 1398: r@ >rlen @ 1399: target>bitmask-size allocatetarget 1400: dup bit$ ! 1401: r@ >rbm ! 1402: 1403: r@ >rlen @ 1404: tcell / 1+ cells allocatetarget r@ >rtype ! 1405: 1406: rdrop 1407: ELSE r> drop THEN 1408: REPEAT drop ; 1409: 1410: \ MakeKernel 22feb99jaw 1411: 1412: : makekernel ( targetsize -- ) 1413: \G convenience word to setup the memory of the target 1414: \G used by main.fs of the c-engine based systems 1415: 100 swap dictionary (region) 1416: setup-target ; 1417: 1418: >MINIMAL 1419: : makekernel makekernel ; 1420: >CROSS 1421: 1422: \ \ switched tdp for rom support 03jun97jaw 1423: 1424: \ second value is here to store some maximal value for statistics 1425: \ tempdp is also embedded here but has nothing to do with rom support 1426: \ (needs switched dp) 1427: 1428: variable tempdp 0 , \ temporary dp for resolving 1429: variable tempdp-save 1430: 1431: 0 [IF] 1432: variable romdp 0 , \ Dictionary-Pointer for ramarea 1433: variable ramdp 0 , \ Dictionary-Pointer for romarea 1434: 1435: \ 1436: variable sramdp \ start of ram-area for forth 1437: variable sromdp \ start of rom-area for forth 1438: 1439: [THEN] 1440: 1441: 0 Value current-region 1442: 0 Value tdp 1443: Variable fixed \ flag: true: no automatic switching 1444: \ false: switching is done automatically 1445: 1446: \ Switch-Policy: 1447: \ 1448: \ a header is always compiled into rom 1449: \ after a created word (create and variable) compilation goes to ram 1450: \ 1451: \ Be careful: If you want to make the data behind create into rom 1452: \ you have to put >rom before create! 1453: 1454: variable constflag constflag off 1455: 1456: : activate ( region -- ) 1457: \G next code goes to this region 1458: dup to current-region >rdp to tdp ; 1459: 1460: : (switchram) 1461: fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT 1462: ram-dictionary activate ; 1463: 1464: : switchram 1465: constflag @ 1466: IF constflag off ELSE (switchram) THEN ; 1467: 1468: : switchrom 1469: fixed @ ?EXIT rom-dictionary activate ; 1470: 1471: : >tempdp ( addr -- ) 1472: tdp tempdp-save ! tempdp to tdp tdp ! ; 1473: : tempdp> ( -- ) 1474: tempdp-save @ to tdp ; 1475: 1476: : >ram fixed off (switchram) fixed on ; 1477: : >rom fixed off switchrom fixed on ; 1478: : >auto fixed off switchrom ; 1479: 1480: 1481: 1482: \ : romstart dup sromdp ! romdp ! ; 1483: \ : ramstart dup sramdp ! ramdp ! ; 1484: 1485: \ default compilation goes to rom 1486: \ when romable support is off, only the rom switch is used (!!) 1487: >auto 1488: 1489: : there tdp @ ; 1490: 1491: >TARGET 1492: 1493: \ \ Target Memory Handling 1494: 1495: \ Byte ordering and cell size 06oct92py 1496: 1497: : cell+ tcell + ; 1498: : cells tcell<< lshift ; 1499: : chars tchar * ; 1500: : char+ tchar + ; 1501: : floats tfloat * ; 1502: 1503: >CROSS 1504: : cell/ tcell<< rshift ; 1505: >TARGET 1506: 20 CONSTANT bl 1507: \ TNIL Constant NIL 1508: 1509: >CROSS 1510: 1511: bigendian 1512: [IF] 1513: : DS! ( d addr -- ) tcell bounds swap 1- 1514: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ; 1515: : DS@ ( addr -- d ) >r 0 0 r> tcell bounds 1516: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP ; 1517: : Sc! ( n addr -- ) >r s>d r> tchar bounds swap 1- 1518: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ; 1519: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds 1520: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ; 1521: [ELSE] 1522: : DS! ( d addr -- ) tcell bounds 1523: DO maxbyte ud/mod rot I c! LOOP 2drop ; 1524: : DS@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1- 1525: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP ; 1526: : Sc! ( n addr -- ) >r s>d r> tchar bounds 1527: DO maxbyte ud/mod rot I c! LOOP 2drop ; 1528: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds swap 1- 1529: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ; 1530: [THEN] 1531: 1532: : S! ( n addr -- ) >r s>d r> DS! ; 1533: : S@ ( addr -- n ) DS@ d>s ; 1534: 1535: : taddr>region ( taddr -- region | 0 ) 1536: \G finds for a target-address the correct region 1537: \G returns 0 if taddr is not in range of a target memory region 1538: region-link 1539: BEGIN @ dup 1540: WHILE dup >r 1541: 0 >rlink - >r 1542: r@ >rlen @ 1543: IF dup r@ borders within 1544: IF r> r> drop nip EXIT THEN 1545: THEN 1546: r> drop 1547: r> 1548: REPEAT 1549: 2drop 0 ; 1550: 1551: : taddr>region-abort ( taddr -- region | 0 ) 1552: \G Same as taddr>region but aborts if taddr is not 1553: \G a valid address in the target address space 1554: dup taddr>region dup 0= 1555: IF drop cr ." Wrong address: " .addr 1556: -1 ABORT" Address out of range!" 1557: THEN nip ; 1558: 1559: : (>regionimage) ( taddr -- 'taddr ) 1560: dup 1561: \ find region we want to address 1562: taddr>region-abort 1563: >r 1564: \ calculate offset in region 1565: r@ >rstart @ - 1566: \ add regions real address in our memory 1567: r> >rmem @ + ; 1568: 1569: : (>regionramimage) ( taddr -- 'taddr ) 1570: \G same as (>regionimage) but aborts if the region is rom 1571: dup 1572: \ find region we want to address 1573: taddr>region-abort 1574: >r 1575: r@ >rrom @ ABORT" CROSS: region is write-protected!" 1576: \ calculate offset in region 1577: r@ >rstart @ - 1578: \ add regions real address in our memory 1579: r> >rmem @ + ; 1580: 1581: : (>regionbm) ( taddr -- 'taddr bitmaskbaseaddr ) 1582: dup 1583: \ find region we want to address 1584: taddr>region-abort 1585: >r 1586: \ calculate offset in region 1587: r@ >rstart @ - 1588: \ add regions real address in our memory 1589: r> >rbm @ ; 1590: 1591: : (>regiontype) ( taddr -- 'taddr ) 1592: dup 1593: \ find region we want to address 1594: taddr>region-abort 1595: >r 1596: \ calculate offset in region 1597: r@ >rstart @ - tcell / cells 1598: \ add regions real address in our memory 1599: r> >rtype @ + ; 1600: 1601: \ Bit string manipulation 06oct92py 1602: \ 9may93jaw 1603: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c, 1604: : bits ( n -- n ) chars Bittable + c@ ; 1605: 1606: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ; 1607: : +bit ( addr n -- ) >bit over c@ or swap c! ; 1608: : -bit ( addr n -- ) >bit invert over c@ and swap c! ; 1609: 1610: : @relbit ( taddr -- f ) (>regionbm) swap cell/ >bit swap c@ and ; 1611: 1612: : (relon) ( taddr -- ) 1613: [ [IFDEF] fd-relocation-table ] 1614: s" +" fd-relocation-table write-file throw 1615: dup s>d <# #s #> fd-relocation-table write-line throw 1616: [ [THEN] ] 1617: (>regionbm) swap cell/ +bit ; 1618: 1619: : (reloff) ( taddr -- ) 1620: [ [IFDEF] fd-relocation-table ] 1621: s" -" fd-relocation-table write-file throw 1622: dup s>d <# #s #> fd-relocation-table write-line throw 1623: [ [THEN] ] 1624: (>regionbm) swap cell/ -bit ; 1625: 1626: : (>image) ( taddr -- absaddr ) image @ + ; 1627: 1628: DEFER >image 1629: DEFER >ramimage 1630: DEFER relon 1631: DEFER reloff 1632: DEFER correcter 1633: 1634: T has? relocate H 1635: [IF] 1636: ' (relon) IS relon 1637: ' (reloff) IS reloff 1638: ' (>regionimage) IS >image 1639: ' (>regionimage) IS >ramimage 1640: [ELSE] 1641: ' drop IS relon 1642: ' drop IS reloff 1643: ' (>regionimage) IS >image 1644: ' (>regionimage) IS >ramimage 1645: [THEN] 1646: 1647: : enforce-writeprotection ( -- ) 1648: ['] (>regionramimage) IS >ramimage ; 1649: 1650: : relax-writeprotection ( -- ) 1651: ['] (>regionimage) IS >ramimage ; 1652: 1653: : writeprotection-relaxed? ( -- ) 1654: ['] >ramimage >body @ ['] (>regionimage) = ; 1655: 1656: \ Target memory access 06oct92py 1657: 1658: : align+ ( taddr -- rest ) 1659: tcell tuck 1- and - [ tcell 1- ] Literal and ; 1660: : cfalign+ ( taddr -- rest ) 1661: \ see kernel.fs:cfaligned 1662: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ; 1663: 1664: >TARGET 1665: : aligned ( taddr -- ta-addr ) dup align+ + ; 1666: \ assumes cell alignment granularity (as GNU C) 1667: 1668: : cfaligned ( taddr1 -- taddr2 ) 1669: \ see kernel.fs 1670: dup cfalign+ + ; 1671: 1672: : @ ( taddr -- w ) >image S@ ; 1673: : ! ( w taddr -- ) >ramimage S! ; 1674: : c@ ( taddr -- char ) >image Sc@ ; 1675: : c! ( char taddr -- ) >ramimage Sc! ; 1676: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ; 1677: : 2! ( x1 x2 taddr -- ) T tuck ! cell+ ! H ; 1678: 1679: \ Target compilation primitives 06oct92py 1680: \ included A! 16may93jaw 1681: 1682: : here ( -- there ) there ; 1683: : allot ( n -- ) tdp +! ; 1684: : , ( w -- ) T here H tcell T allot ! H ; 1685: : c, ( char -- ) T here H tchar T allot c! H ; 1686: : align ( -- ) T here H align+ 0 ?DO bl T c, H tchar +LOOP ; 1687: : cfalign ( -- ) 1688: T here H cfalign+ 0 ?DO bl T c, H tchar +LOOP ; 1689: 1690: : >address dup 0>= IF tbyte / THEN ; \ ?? jaw 1691: : A! swap >address swap dup relon T ! H ; 1692: : A, ( w -- ) >address T here H relon T , H ; 1693: 1694: \ high-level ghosts 1695: 1696: >CROSS 1697: 1698: Ghost (do) Ghost (?do) 2drop 1699: Ghost (for) drop 1700: Ghost (loop) Ghost (+loop) 2drop 1701: Ghost (next) drop 1702: Ghost (does>) Ghost (compile) 2drop 1703: Ghost (.") Ghost (S") Ghost (ABORT") 2drop drop 1704: Ghost (C") drop 1705: Ghost ' drop 1706: 1707: \ user ghosts 1708: 1709: Ghost state drop 1710: 1711: \ \ -------------------- Host/Target copy etc. 29aug01jaw 1712: 1713: 1714: >CROSS 1715: 1716: : TD! >image DS! ; 1717: : TD@ >image DS@ ; 1718: 1719: : th-count ( taddr -- host-addr len ) 1720: \G returns host address of target string 1721: assert1( tbyte 1 = ) 1722: dup X c@ swap X char+ >image swap ; 1723: 1724: : ht-move ( haddr taddr len -- ) 1725: \G moves data from host-addr to destination in target-addr 1726: \G character by character 1727: swap -rot bounds ?DO I c@ over X c! X char+ LOOP drop ; 1728: 1729: 2Variable last-string 1730: 1731: : ht-string, ( addr count -- ) 1732: dup there swap last-string 2! 1733: dup T c, H bounds ?DO I c@ T c, H LOOP ; 1734: 1735: >TARGET 1736: 1737: : count dup X c@ swap X char+ swap ; 1738: 1739: : on -1 -1 rot TD! ; 1740: : off T 0 swap ! H ; 1741: 1742: : tcmove ( source dest len -- ) 1743: \G cmove in target memory 1744: tchar * bounds 1745: ?DO dup T c@ H I T c! H 1+ 1746: tchar +LOOP drop ; 1747: 1748: : td, ( d -- ) 1749: \G Store a host value as one cell into the target 1750: there tcell X allot TD! ; 1751: 1752: \ \ Load Assembler 1753: 1754: >TARGET 1755: H also Forth definitions 1756: 1757: \ FIXME: should we include the assembler really in the forth 1758: \ dictionary?!?!?!? This conflicts with the existing assembler 1759: \ of the host forth system!! 1760: [IFDEF] asm-include asm-include [THEN] hex 1761: 1762: previous 1763: 1764: 1765: >CROSS 1766: 1767: : (cc) T a, H ; ' (cc) plugin-of colon, 1768: : (prim) T a, H ; ' (prim) plugin-of prim, 1769: 1770: : (cr) >tempdp colon, tempdp> ; ' (cr) plugin-of colon-resolve 1771: : (ar) T ! H ; ' (ar) plugin-of addr-resolve 1772: : (dr) ( ghost res-pnt target-addr addr ) 1773: >tempdp drop over 1774: dup >magic @ <do:> = 1775: IF doer, 1776: ELSE dodoes, 1777: THEN 1778: tempdp> ; ' (dr) plugin-of doer-resolve 1779: 1780: : (cm) ( -- addr ) 1781: there -1 colon, ; ' (cm) plugin-of colonmark, 1782: 1783: >TARGET 1784: : compile, ( xt -- ) 1785: dup xt>ghost >comp @ EXECUTE ; 1786: >CROSS 1787: 1788: \ resolve structure 1789: 1790: : >next ; \ link to next field 1791: : >tag cell+ ; \ indecates type of reference: 0: call, 1: address, 2: doer 1792: : >taddr cell+ cell+ ; 1793: : >ghost 3 cells + ; 1794: : >file 4 cells + ; 1795: : >line 5 cells + ; 1796: 1797: : (refered) ( ghost addr tag -- ) 1798: \G creates a reference to ghost at address taddr 1799: >space 1800: rot >link linked 1801: ( taddr tag ) , 1802: ( taddr ) , 1803: last-header-ghost @ , 1804: loadfile , 1805: sourceline# , 1806: space> 1807: ; 1808: 1809: : refered ( ghost tag -- ) 1810: \G creates a resolve structure 1811: T here aligned H swap (refered) 1812: ; 1813: 1814: : killref ( addr ghost -- ) 1815: \G kills a forward reference to ghost at position addr 1816: \G this is used to eleminate a :dovar refence after making a DOES> 1817: dup >magic @ <fwd> <> IF 2drop EXIT THEN 1818: swap >r >link 1819: BEGIN dup @ dup ( addr last this ) 1820: WHILE dup >taddr @ r@ = 1821: IF @ over ! 1822: ELSE nip THEN 1823: REPEAT rdrop 2drop 1824: ; 1825: 1826: Defer resolve-warning 1827: 1828: : reswarn-test ( ghost res-struct -- ghost res-struct ) 1829: over cr ." Resolving " .ghost dup ." in " >ghost @ .ghost ; 1830: 1831: : reswarn-forward ( ghost res-struct -- ghost res-struct ) 1832: over warnhead .ghost dup ." is referenced in " 1833: >ghost @ .ghost ; 1834: 1835: \ ' reswarn-test IS resolve-warning 1836: 1837: \ resolve 14oct92py 1838: 1839: : resolve-loop ( ghost resolve-list tcfa -- ) 1840: >r 1841: BEGIN dup WHILE 1842: \ dup >tag @ 2 = IF reswarn-forward THEN 1843: resolve-warning 1844: r@ over >taddr @ 1845: 2 pick >tag @ 1846: CASE 0 OF colon-resolve ENDOF 1847: 1 OF addr-resolve ENDOF 1848: 2 OF doer-resolve ENDOF 1849: ENDCASE 1850: @ \ next list element 1851: REPEAT 2drop rdrop 1852: ; 1853: 1854: \ : resolve-loop ( ghost tcfa -- ghost tcfa ) 1855: \ >r dup >link @ 1856: \ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ; 1857: 1858: \ exists 9may93jaw 1859: 1860: : exists ( ghost tcfa -- ) 1861: \G print warning and set new target link in ghost 1862: swap exists-warning 1863: >link ! ; 1864: 1865: : colon-resolved ( ghost -- ) 1866: \ compiles a call to a colon definition, 1867: \ compile action for >comp field 1868: >link @ colon, ; 1869: 1870: : prim-resolved ( ghost -- ) 1871: \ compiles a call to a primitive 1872: >link @ prim, ; 1873: 1874: : (is-forward) ( ghost -- ) 1875: colonmark, 0 (refered) ; \ compile space for call 1876: ' (is-forward) IS is-forward 1877: 1878: 0 Value resolved 1879: 1880: : resolve-forward-references ( ghost resolve-list -- ) 1881: \ loop through forward referencies 1882: comp-state @ >r Resolving comp-state ! 1883: over >link @ resolve-loop 1884: r> comp-state ! 1885: 1886: ['] noop IS resolve-warning ; 1887: 1888: 1889: : (resolve) ( ghost tcfa -- ghost resolve-list ) 1890: \ check for a valid address, it is a primitive reference 1891: \ otherwise 1892: dup taddr>region 0<> IF 1893: \ define this address in the region address type table 1894: 2dup (>regiontype) define-addr-struct addr-xt-ghost 1895: \ we define new address only if empty 1896: \ this is for not to take over the alias ghost 1897: \ (different ghost, but identical xt) 1898: \ but the very first that really defines it 1899: dup @ 0= IF ! ELSE 2drop THEN 1900: THEN 1901: swap >r 1902: r@ to resolved 1903: 1904: \ r@ >comp @ ['] is-forward = 1905: \ ABORT" >comp action not set on a resolved ghost" 1906: 1907: \ copmile action defaults to colon-resolved 1908: \ if this is not right something must be set before 1909: \ calling resolve 1910: r@ >comp @ ['] is-forward = IF 1911: ['] colon-resolved r@ >comp ! 1912: THEN 1913: r@ >link @ swap \ ( list tcfa R: ghost ) 1914: \ mark ghost as resolved 1915: r@ >link ! <res> r@ >magic ! 1916: r> swap ; 1917: 1918: : resolve ( ghost tcfa -- ) 1919: \G resolve referencies to ghost with tcfa 1920: \ is ghost resolved?, second resolve means another 1921: \ definition with the same name 1922: over undefined? 0= IF exists EXIT THEN 1923: (resolve) 1924: ( ghost resolve-list ) 1925: resolve-forward-references ; 1926: 1927: : resolve-noforwards ( ghost tcfa -- ) 1928: \G Same as resolve but complain if there are any 1929: \G forward references on this ghost 1930: \ is ghost resolved?, second resolve means another 1931: \ definition with the same name 1932: over undefined? 0= IF exists EXIT THEN 1933: (resolve) 1934: IF cr ." No forward references allowed on: " .ghost cr 1935: -1 ABORT" Illegal forward reference" 1936: THEN 1937: drop ; 1938: 1939: \ gexecute ghost, 01nov92py 1940: 1941: : (gexecute) ( ghost -- ) 1942: dup >comp @ EXECUTE ; 1943: 1944: : gexecute ( ghost -- ) 1945: dup >magic @ <imm> = ABORT" CROSS: gexecute on immediate word" 1946: (gexecute) ; 1947: 1948: : addr, ( ghost -- ) 1949: dup forward? IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ; 1950: 1951: \ .unresolved 11may93jaw 1952: 1953: variable ResolveFlag 1954: 1955: \ ?touched 11may93jaw 1956: 1957: : ?touched ( ghost -- flag ) dup forward? swap >link @ 1958: 0 <> and ; 1959: 1960: : .forwarddefs ( ghost -- ) 1961: ." appeared in:" 1962: >link 1963: BEGIN @ dup 1964: WHILE cr 5 spaces 1965: dup >ghost @ .ghost 1966: ." file " dup >file @ ?dup IF count type ELSE ." CON" THEN 1967: ." line " dup >line @ .dec 1968: REPEAT 1969: drop ; 1970: 1971: : ?resolved ( ghost -- ) 1972: dup ?touched 1973: IF ResolveFlag on 1974: dup cr .ghost .forwarddefs 1975: ELSE drop 1976: THEN ; 1977: 1978: : .unresolved ( -- ) 1979: ResolveFlag off cr ." Unresolved: " 1980: ghost-list 1981: BEGIN @ dup 1982: WHILE dup ?resolved 1983: REPEAT drop ResolveFlag @ 1984: IF 1985: -1 abort" Unresolved words!" 1986: ELSE 1987: ." Nothing!" 1988: THEN 1989: cr ; 1990: 1991: : .stats 1992: base @ >r decimal 1993: cr ." named Headers: " headers-named @ . 1994: r> base ! ; 1995: 1996: >MINIMAL 1997: 1998: : .unresolved .unresolved ; 1999: 2000: >CROSS 2001: \ Header states 12dec92py 2002: 2003: \ : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ; 2004: bigendian [IF] 0 [ELSE] tcell 1- [THEN] Constant flag+ 2005: : flag! ( w -- ) tlast @ flag+ + dup >r T c@ xor r> c! H ; 2006: 2007: VARIABLE ^imm 2008: 2009: \ !! should be target wordsize specific 2010: $80 constant alias-mask 2011: $40 constant immediate-mask 2012: $20 constant restrict-mask 2013: 2014: >TARGET 2015: : immediate immediate-mask flag! 2016: ^imm @ @ dup <imm> = IF drop EXIT THEN 2017: <res> <> ABORT" CROSS: Cannot immediate a unresolved word" 2018: <imm> ^imm @ ! ; 2019: : restrict restrict-mask flag! ; 2020: 2021: : isdoer 2022: \G define a forth word as doer, this makes obviously only sence on 2023: \G forth processors such as the PSC1000 2024: <do:> last-header-ghost @ >magic ! ; 2025: >CROSS 2026: 2027: \ Target Header Creation 01nov92py 2028: 2029: : ht-lstring, ( addr count -- ) 2030: dup T , H bounds ?DO I c@ T c, H LOOP ; 2031: 2032: >TARGET 2033: : name, ( "name" -- ) bl word count ht-lstring, X cfalign ; 2034: : view, ( -- ) ( dummy ) ; 2035: >CROSS 2036: 2037: \ Target Document Creation (goes to crossdoc.fd) 05jul95py 2038: 2039: s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id 2040: \ contains the file-id of the documentation file 2041: 2042: : T-\G ( -- ) 2043: source >in @ /string doc-file-id write-line throw 2044: postpone \ ; 2045: 2046: Variable to-doc to-doc on 2047: 2048: : cross-doc-entry ( -- ) 2049: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header 2050: IF 2051: s" " doc-file-id write-line throw 2052: s" make-doc " doc-file-id write-file throw 2053: 2054: Last-Header-Ghost @ >ghostname doc-file-id write-file throw 2055: >in @ 2056: [char] ( parse 2drop 2057: [char] ) parse doc-file-id write-file throw 2058: s" )" doc-file-id write-file throw 2059: [char] \ parse 2drop 2060: T-\G 2061: >in ! 2062: THEN ; 2063: 2064: \ Target TAGS creation 2065: 2066: s" kernel.TAGS" r/w create-file throw value tag-file-id 2067: s" kernel.tags" r/w create-file throw value vi-tag-file-id 2068: \ contains the file-id of the tags file 2069: 2070: Create tag-beg 2 c, 7F c, bl c, 2071: Create tag-end 2 c, bl c, 01 c, 2072: Create tag-bof 1 c, 0C c, 2073: Create tag-tab 1 c, 09 c, 2074: 2075: 2variable last-loadfilename 0 0 last-loadfilename 2! 2076: 2077: : put-load-file-name ( -- ) 2078: sourcefilename last-loadfilename 2@ d<> 2079: IF 2080: tag-bof count tag-file-id write-line throw 2081: sourcefilename 2dup 2082: tag-file-id write-file throw 2083: last-loadfilename 2! 2084: s" ,0" tag-file-id write-line throw 2085: THEN ; 2086: 2087: : cross-gnu-tag-entry ( -- ) 2088: tlast @ 0<> \ not an anonymous (i.e. noname) header 2089: IF 2090: put-load-file-name 2091: source >in @ min tag-file-id write-file throw 2092: tag-beg count tag-file-id write-file throw 2093: Last-Header-Ghost @ >ghostname tag-file-id write-file throw 2094: tag-end count tag-file-id write-file throw 2095: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw 2096: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw 2097: s" ,0" tag-file-id write-line throw 2098: base ! 2099: THEN ; 2100: 2101: : cross-vi-tag-entry ( -- ) 2102: tlast @ 0<> \ not an anonymous (i.e. noname) header 2103: IF 2104: sourcefilename vi-tag-file-id write-file throw 2105: tag-tab count vi-tag-file-id write-file throw 2106: Last-Header-Ghost @ >ghostname vi-tag-file-id write-file throw 2107: tag-tab count vi-tag-file-id write-file throw 2108: s" /^" vi-tag-file-id write-file throw 2109: source vi-tag-file-id write-file throw 2110: s" $/" vi-tag-file-id write-line throw 2111: THEN ; 2112: 2113: : cross-tag-entry ( -- ) 2114: cross-gnu-tag-entry 2115: cross-vi-tag-entry ; 2116: 2117: \ Check for words 2118: 2119: Defer skip? ' false IS skip? 2120: 2121: : skipdef ( "name" -- ) 2122: \G skip definition of an undefined word in undef-words and 2123: \G all-words mode 2124: Ghost dup forward? 2125: IF >magic <skip> swap ! 2126: ELSE drop THEN ; 2127: 2128: : tdefined? ( "name" -- flag ) 2129: Ghost undefined? 0= ; 2130: 2131: : defined2? ( "name" -- flag ) 2132: \G return true for anything else than forward, even for <skip> 2133: \G that's what we want 2134: Ghost forward? 0= ; 2135: 2136: : forced? ( "name" -- flag ) 2137: \G return ture if it is a foreced skip with defskip 2138: Ghost >magic @ <skip> = ; 2139: 2140: : needed? ( -- flag ) \ name 2141: \G returns a false flag when 2142: \G a word is not defined 2143: \G a forward reference exists 2144: \G so the definition is not skipped! 2145: bl word gfind 2146: IF dup undefined? 2147: nip 2148: 0= 2149: ELSE drop true THEN ; 2150: 2151: : doer? ( -- flag ) \ name 2152: Ghost >magic @ <do:> = ; 2153: 2154: : skip-defs ( -- ) 2155: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ; 2156: 2157: \ Target header creation 2158: 2159: Variable NoHeaderFlag 2160: NoHeaderFlag off 2161: 2162: : 0.r ( n1 n2 -- ) 2163: base @ >r hex 2164: 0 swap <# 0 ?DO # LOOP #> type 2165: r> base ! ; 2166: 2167: : .sym ( adr len -- ) 2168: \G escapes / and \ to produce sed output 2169: bounds 2170: DO I c@ dup 2171: CASE [char] / OF drop ." \/" ENDOF 2172: [char] \ OF drop ." \\" ENDOF 2173: dup OF emit ENDOF 2174: ENDCASE 2175: LOOP ; 2176: 2177: Defer setup-execution-semantics 2178: 0 Value lastghost 2179: 2180: : (THeader ( "name" -- ghost ) 2181: \ >in @ bl word count type 2 spaces >in ! 2182: \ wordheaders will always be compiled to rom 2183: switchrom 2184: \ build header in target 2185: NoHeaderFlag @ 2186: IF NoHeaderFlag off 2187: ELSE 2188: T align H view, 2189: tlast @ dup 0> IF tcell - THEN T A, H there tlast ! 2190: 1 headers-named +! \ Statistic 2191: >in @ T name, H >in ! 2192: THEN 2193: T cfalign here H tlastcfa ! 2194: \ Old Symbol table sed-script 2195: \ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in ! 2196: HeaderGhost 2197: \ output symbol table to extra file 2198: dup >ghostname there symentry 2199: dup Last-Header-Ghost ! dup to lastghost 2200: dup >magic ^imm ! \ a pointer for immediate 2201: alias-mask flag! 2202: cross-doc-entry cross-tag-entry 2203: setup-execution-semantics 2204: ; 2205: 2206: \ this is the resolver information from ":" 2207: \ resolving is done by ";" 2208: Variable ;Resolve 1 cells allot 2209: 2210: : hereresolve ( ghost -- ) 2211: there resolve 0 ;Resolve ! ; 2212: 2213: : Theader ( "name" -- ghost ) 2214: (THeader dup hereresolve ; 2215: 2216: Variable aprim-nr -20 aprim-nr ! 2217: 2218: : copy-execution-semantics ( ghost-from ghost-dest -- ) 2219: >r 2220: dup >exec @ r@ >exec ! 2221: dup >comp @ r@ >comp ! 2222: dup >exec2 @ r@ >exec2 ! 2223: dup >exec-compile @ r@ >exec-compile ! 2224: dup >ghost-xt @ r@ >ghost-xt ! 2225: dup >created @ r@ >created ! 2226: rdrop drop ; 2227: 2228: >TARGET 2229: 2230: : Alias ( cfa -- ) \ name 2231: >in @ skip? IF 2drop EXIT THEN >in ! 2232: (THeader ( S xt ghost ) 2233: 2dup swap xt>ghost swap copy-execution-semantics 2234: over resolve T A, H alias-mask flag! ; 2235: 2236: Variable last-prim-ghost 2237: 0 last-prim-ghost ! 2238: 2239: : asmprimname, ( ghost -- : name ) 2240: dup last-prim-ghost ! 2241: >r 2242: here bl word count string, r@ >asm-name ! 2243: aprim-nr @ r> >asm-dummyaddr ! ; 2244: 2245: Defer setup-prim-semantics 2246: 2247: : mapprim ( "forthname" "asmlabel" -- ) 2248: THeader -1 aprim-nr +! aprim-nr @ T A, H 2249: asmprimname, 2250: setup-prim-semantics ; 2251: 2252: : mapprim: ( "forthname" "asmlabel" -- ) 2253: -1 aprim-nr +! aprim-nr @ 2254: Ghost tuck swap resolve-noforwards <do:> swap tuck >magic ! 2255: asmprimname, ; 2256: 2257: : Doer: ( cfa -- ) \ name 2258: >in @ skip? IF 2drop EXIT THEN >in ! 2259: dup 0< s" prims" T $has? H 0= and 2260: IF 2261: .sourcepos ." needs doer: " >in @ bl word count type >in ! cr 2262: THEN 2263: Ghost 2264: tuck swap resolve-noforwards <do:> swap >magic ! ; 2265: 2266: Variable prim# 2267: : first-primitive ( n -- ) prim# ! ; 2268: : Primitive ( -- ) \ name 2269: >in @ skip? IF drop EXIT THEN >in ! 2270: s" prims" T $has? H 0= 2271: IF 2272: .sourcepos ." needs prim: " >in @ bl word count type >in ! cr 2273: THEN 2274: prim# @ (THeader ( S xt ghost ) 2275: ['] prim-resolved over >comp ! 2276: dup >ghost-flags <primitive> set-flag 2277: over resolve-noforwards T A, H alias-mask flag! 2278: -1 prim# +! ; 2279: >CROSS 2280: 2281: \ Conditionals and Comments 11may93jaw 2282: 2283: \G saves the existing cond action, this is used for redefining in 2284: \G instant 2285: Variable cond-xt-old 2286: 2287: : cond-target ( -- ) 2288: \G Compiles semantic of redefined cond into new one 2289: cond-xt-old @ compile, ; immediate restrict 2290: 2291: : ;Cond 2292: postpone ; 2293: swap ! ; immediate 2294: 2295: : Cond: ( "name" -- ) 2296: \g defines a conditional or another word that must 2297: \g be executed directly while compiling 2298: \g these words have no interpretative semantics by default 2299: Ghost 2300: >exec-compile 2301: dup @ cond-xt-old ! 2302: :NONAME ; 2303: 2304: 2305: : Comment ( -- ) 2306: >in @ Ghost swap >in ! ' swap 2307: 2dup >exec-compile ! >exec ! ; 2308: 2309: Comment ( Comment \ 2310: 2311: \ compile 10may93jaw 2312: 2313: : compile ( "name" -- ) \ name 2314: findghost 2315: dup >exec-compile @ ?dup 2316: IF nip compile, 2317: ELSE postpone literal postpone gexecute THEN ; immediate restrict 2318: 2319: >TARGET 2320: 2321: : ' ( -- xt ) 2322: \G returns the target-cfa of a ghost 2323: bl word gfind 0= ABORT" CROSS: Ghost don't exists" 2324: g>xt ; 2325: 2326: \ FIXME: this works for the current use cases, but is not 2327: \ in all cases correct ;-) 2328: : comp' X ' 0 ; 2329: 2330: Cond: ['] T ' H alit, ;Cond 2331: 2332: >CROSS 2333: 2334: : [T'] 2335: \ returns the target-cfa of a ghost, or compiles it as literal 2336: postpone [G'] 2337: state @ IF postpone g>xt ELSE g>xt THEN ; immediate 2338: 2339: \ \ threading modell 13dec92py 2340: \ modularized 14jun97jaw 2341: 2342: T 2 cells H Value xt>body 2343: 2344: : (>body) ( cfa -- pfa ) 2345: xt>body + ; ' (>body) plugin-of t>body 2346: 2347: : fillcfa ( usedcells -- ) 2348: T cells H xt>body swap - 2349: assert1( dup 0 >= ) 2350: 0 ?DO 0 X c, tchar +LOOP ; 2351: 2352: : (doer,) ( ghost -- ) 2353: addr, 1 fillcfa ; ' (doer,) plugin-of doer, 2354: 2355: : (docol,) ( -- ) [G'] :docol (doer,) ; ' (docol,) plugin-of docol, 2356: 2357: ' NOOP plugin-of ca>native 2358: 2359: : (doprim,) ( -- ) 2360: there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) plugin-of doprim, 2361: 2362: : (doeshandler,) ( -- ) 2363: T cfalign H [G'] :doesjump addr, T 0 , H ; ' (doeshandler,) plugin-of doeshandler, 2364: 2365: : (dodoes,) ( does-action-ghost -- ) 2366: ]comp [G'] :dodoes addr, comp[ 2367: addr, 2368: \ the relocator in the c engine, does not like the 2369: \ does-address to marked for relocation 2370: [ T e? ec H 0= [IF] ] T here H tcell - reloff [ [THEN] ] 2371: 2 fillcfa ; ' (dodoes,) plugin-of dodoes, 2372: 2373: : (dlit,) ( n -- ) compile lit td, ; ' (dlit,) plugin-of dlit, 2374: 2375: : (lit,) ( n -- ) s>d dlit, ; ' (lit,) plugin-of lit, 2376: 2377: \ if we dont produce relocatable code alit, defaults to lit, jaw 2378: \ this is just for convenience, so we don't have to define alit, 2379: \ seperately for embedded systems.... 2380: T has? relocate H 2381: [IF] 2382: : (alit,) ( n -- ) compile lit T a, H ; ' (alit,) plugin-of alit, 2383: [ELSE] 2384: : (alit,) ( n -- ) lit, ; ' (alit,) plugin-of alit, 2385: [THEN] 2386: 2387: : (fini,) compile ;s ; ' (fini,) plugin-of fini, 2388: 2389: [IFUNDEF] (code) 2390: Defer (code) 2391: Defer (end-code) 2392: [THEN] 2393: 2394: >TARGET 2395: : Code 2396: defempty? 2397: (THeader ( ghost ) 2398: ['] prim-resolved over >comp ! 2399: there resolve-noforwards 2400: 2401: [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF] 2402: doprim, 2403: [THEN] 2404: depth (code) ; 2405: 2406: \ FIXME : no-compile -1 ABORT" this ghost is not for compilation" ; 2407: 2408: : Code: 2409: defempty? 2410: Ghost >r 2411: r@ >ghostname there symentry 2412: r@ there ca>native resolve-noforwards 2413: <do:> r@ >magic ! 2414: r> drop 2415: depth (code) ; 2416: 2417: : end-code 2418: (end-code) 2419: depth ?dup IF 1- <> ABORT" CROSS: Stack changed" 2420: ELSE true ABORT" CROSS: Stack empty" THEN 2421: ; 2422: 2423: >CROSS 2424: 2425: \ tLiteral 12dec92py 2426: 2427: >TARGET 2428: Cond: \G T-\G ;Cond 2429: 2430: Cond: Literal ( n -- ) lit, ;Cond 2431: Cond: ALiteral ( n -- ) alit, ;Cond 2432: 2433: : Char ( "<char>" -- ) bl word char+ c@ ; 2434: Cond: [Char] ( "<char>" -- ) Char lit, ;Cond 2435: 2436: tchar 1 = [IF] 2437: Cond: chars ;Cond 2438: [THEN] 2439: 2440: \ some special literals 27jan97jaw 2441: 2442: \ !! Known Bug: Special Literals and plug-ins work only correct 2443: \ on 16 and 32 Bit Targets and 32 Bit Hosts! 2444: 2445: \ This section could be done with dlit, now. But first I need 2446: \ some test code JAW 2447: 2448: Cond: MAXU 2449: tcell 1 cells u> 2450: IF compile lit tcell 0 ?DO FF T c, H LOOP 2451: ELSE ffffffff lit, THEN 2452: ;Cond 2453: 2454: Cond: MINI 2455: tcell 1 cells u> 2456: IF compile lit bigendian 2457: IF 80 T c, H tcell 1 ?DO 0 T c, H LOOP 2458: ELSE tcell 1 ?DO 0 T c, H LOOP 80 T c, H 2459: THEN 2460: ELSE tcell 2 = IF 8000 ELSE 80000000 THEN lit, THEN 2461: ;Cond 2462: 2463: Cond: MAXI 2464: tcell 1 cells u> 2465: IF compile lit bigendian 2466: IF 7F T c, H tcell 1 ?DO FF T c, H LOOP 2467: ELSE tcell 1 ?DO FF T c, H LOOP 7F T c, H 2468: THEN 2469: ELSE tcell 2 = IF 7fff ELSE 7fffffff THEN lit, THEN 2470: ;Cond 2471: 2472: >CROSS 2473: 2474: \ Target compiling loop 12dec92py 2475: \ ">tib trick thrown out 10may93jaw 2476: \ number? defined at the top 11may93jaw 2477: \ replaced >in by save-input 2478: 2479: : discard 0 ?DO drop LOOP ; 2480: 2481: \ compiled word might leave items on stack! 2482: : tcom ( x1 .. xn n name -- ) 2483: \ dup count type space 2484: gfind 2485: IF >r ( discard saved input state ) discard r> 2486: dup >exec-compile @ ?dup 2487: IF nip execute-exec-compile ELSE gexecute THEN 2488: EXIT 2489: THEN 2490: number? dup 2491: IF 0> IF swap lit, THEN lit, discard 2492: ELSE 2drop restore-input throw Ghost gexecute THEN ; 2493: 2494: \ : ; DOES> 13dec92py 2495: \ ] 9may93py/jaw 2496: 2497: >CROSS 2498: 2499: : compiling-state ( -- ) 2500: \G set states to compililng 2501: Compiling comp-state ! 2502: \ if we have a state in target, change it with the compile state 2503: [G'] state dup undefined? 0= 2504: IF >ghost-xt @ execute X on ELSE drop THEN ; 2505: 2506: : interpreting-state ( -- ) 2507: \G set states to interpreting 2508: \ if target has a state variable, change it according to our state 2509: [G'] state dup undefined? 0= 2510: IF >ghost-xt @ execute X off ELSE drop THEN 2511: Interpreting comp-state ! ; 2512: 2513: >TARGET 2514: 2515: : ] 2516: compiling-state 2517: BEGIN 2518: BEGIN save-input bl word 2519: dup c@ 0= WHILE drop discard refill 0= 2520: ABORT" CROSS: End of file while target compiling" 2521: REPEAT 2522: tcom 2523: compiling? 0= 2524: UNTIL ; 2525: 2526: \ by the way: defining a second interpreter (a compiler-)loop 2527: \ is not allowed if a system should be ans conform 2528: 2529: : (:) ( ghost -- ) 2530: \ common factor of : and :noname. Prepare ;Resolve and start definition 2531: ;Resolve ! there ;Resolve cell+ ! 2532: docol, ]comp colon-start depth T ] H ; 2533: 2534: : : ( -- colon-sys ) \ Name 2535: defempty? 2536: constflag off \ don't let this flag work over colon defs 2537: \ just to go sure nothing unwanted happens 2538: >in @ skip? IF drop skip-defs EXIT THEN >in ! 2539: (THeader (:) ; 2540: 2541: : :noname ( -- colon-sys ) 2542: X cfalign there 2543: \ define a nameless ghost 2544: here ghostheader dup last-header-ghost ! dup to lastghost 2545: (:) ; 2546: 2547: Cond: EXIT ( -- ) compile ;S ;Cond 2548: 2549: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond 2550: 2551: >CROSS 2552: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT" 2553: ;Resolve cell+ @ ; 2554: 2555: >TARGET 2556: 2557: Cond: recurse ( -- ) Last-Header-Ghost @ gexecute ;Cond 2558: 2559: Cond: ; ( -- ) 2560: depth ?dup 2561: IF 1- <> ABORT" CROSS: Stack changed" 2562: ELSE true ABORT" CROSS: Stack empty" 2563: THEN 2564: colon-end 2565: fini, 2566: comp[ 2567: ;Resolve @ 2568: IF ['] colon-resolved ;Resolve @ >comp ! 2569: ;Resolve @ ;Resolve cell+ @ resolve 2570: THEN 2571: interpreting-state 2572: ;Cond 2573: 2574: Cond: [ ( -- ) interpreting-state ;Cond 2575: 2576: >CROSS 2577: 2578: 0 Value created 2579: 2580: : !does ( does-action -- ) 2581: tlastcfa @ [G'] :dovar killref 2582: >space here >r ghostheader space> 2583: ['] colon-resolved r@ >comp ! 2584: r@ created >do:ghost ! r@ swap resolve 2585: r> tlastcfa @ >tempdp dodoes, tempdp> ; 2586: 2587: Defer instant-interpret-does>-hook 2588: 2589: : does-resolved ( ghost -- ) 2590: compile does-exec g>xt T a, H ; 2591: 2592: : resolve-does>-part ( -- ) 2593: \ resolve words made by builders 2594: Last-Header-Ghost @ >do:ghost @ ?dup 2595: IF there resolve THEN ; 2596: 2597: >TARGET 2598: Cond: DOES> 2599: compile (does>) doeshandler, 2600: resolve-does>-part 2601: ;Cond 2602: 2603: : DOES> 2604: ['] does-resolved created >comp ! 2605: switchrom doeshandler, T here H !does 2606: instant-interpret-does>-hook 2607: depth T ] H ; 2608: 2609: >CROSS 2610: \ Creation 01nov92py 2611: 2612: \ Builder 11may93jaw 2613: 2614: 0 Value built 2615: 2616: : Builder ( Create-xt do-ghost "name" -- ) 2617: \ builds up a builder in current vocabulary 2618: \ create-xt is executed when word is interpreted 2619: \ do:-xt is executed when the created word from builder is executed 2620: \ for do:-xt an additional entry after the normal ghost-entrys is used 2621: 2622: ghost to built 2623: built >created @ 0= IF 2624: built >created on 2625: THEN ; 2626: 2627: : gdoes, ( ghost -- ) 2628: \ makes the codefield for a word that is built 2629: >do:ghost @ dup undefined? 0= 2630: IF 2631: dup >magic @ <do:> = 2632: IF doer, 2633: ELSE dodoes, 2634: THEN 2635: EXIT 2636: THEN 2637: \ compile :dodoes gexecute 2638: \ T here H tcell - reloff 2639: 2 refered 2640: 0 fillcfa 2641: ; 2642: 2643: : takeover-x-semantics ( S constructor-ghost new-ghost -- ) 2644: \g stores execution semantic and compilation semantic in the built word 2645: swap >do:ghost @ 2dup swap >do:ghost ! 2646: \ we use the >exec2 field for the semantic of a created word, 2647: \ using exec or exec2 makes no difference for normal cross-compilation 2648: \ but is usefull for instant where the exec field is already 2649: \ defined (e.g. Vocabularies) 2650: 2dup >exec @ swap >exec2 ! 2651: >comp @ swap >comp ! ; 2652: 2653: 0 Value createhere 2654: 2655: : create-resolve ( -- ) 2656: created createhere resolve 0 ;Resolve ! ; 2657: : create-resolve-immediate ( -- ) 2658: create-resolve T immediate H ; 2659: 2660: : TCreate ( <name> -- ) 2661: create-forward-warn 2662: IF ['] reswarn-forward IS resolve-warning THEN 2663: executed-ghost @ (Theader 2664: dup >created on dup to created 2665: 2dup takeover-x-semantics 2666: there to createhere drop gdoes, ; 2667: 2668: : RTCreate ( <name> -- ) 2669: \ creates a new word with code-field in ram 2670: create-forward-warn 2671: IF ['] reswarn-forward IS resolve-warning THEN 2672: \ make Alias 2673: executed-ghost @ (THeader 2674: dup >created on dup to created 2675: 2dup takeover-x-semantics 2676: there 0 T a, H alias-mask flag! 2677: \ store poiter to code-field 2678: switchram T cfalign H 2679: there swap T ! H 2680: there tlastcfa ! 2681: there to createhere drop gdoes, ; 2682: 2683: : Build: ( -- [xt] [colon-sys] ) 2684: :noname postpone TCreate ; 2685: 2686: : BuildSmart: ( -- [xt] [colon-sys] ) 2687: :noname 2688: [ T has? rom H [IF] ] 2689: postpone RTCreate 2690: [ [ELSE] ] 2691: postpone TCreate 2692: [ [THEN] ] ; 2693: 2694: : ;Build 2695: postpone create-resolve postpone ; built >exec ! ; immediate 2696: 2697: : ;Build-immediate 2698: postpone create-resolve-immediate 2699: postpone ; built >exec ! ; immediate 2700: 2701: : gdoes> ( ghost -- addr flag ) 2702: executed-ghost @ g>body ; 2703: 2704: \ DO: ;DO 11may93jaw 2705: 2706: : do:ghost! ( ghost -- ) built >do:ghost ! ; 2707: : doexec! ( xt -- ) built >do:ghost @ >exec ! ; 2708: 2709: : DO: ( -- [xt] [colon-sys] ) 2710: here ghostheader do:ghost! 2711: :noname postpone gdoes> ; 2712: 2713: : by: ( -- [xt] [colon-sys] ) \ name 2714: Ghost do:ghost! 2715: :noname postpone gdoes> ; 2716: 2717: : ;DO ( [xt] [colon-sys] -- ) 2718: postpone ; doexec! ; immediate 2719: 2720: : by ( -- ) \ Name 2721: Ghost >do:ghost @ do:ghost! ; 2722: 2723: : compile: ( --[xt] [colon-sys] ) 2724: \G defines a compile time action for created words 2725: \G by this builder 2726: :noname ; 2727: 2728: : ;compile ( [xt] [colon-sys] -- ) 2729: postpone ; built >do:ghost @ >comp ! ; immediate 2730: 2731: \ Variables and Constants 05dec92py 2732: 2733: Builder (Constant) 2734: Build: ( n -- ) ;Build 2735: by: :docon ( target-body-addr -- n ) T @ H ;DO 2736: 2737: Builder Constant 2738: Build: ( n -- ) T , H ;Build 2739: by (Constant) 2740: 2741: Builder AConstant 2742: Build: ( n -- ) T A, H ;Build 2743: by (Constant) 2744: 2745: Builder 2Constant 2746: Build: ( d -- ) T , , H ;Build 2747: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO 2748: 2749: Builder Create 2750: BuildSmart: ;Build 2751: by: :dovar ( target-body-addr -- addr ) ;DO 2752: 2753: Builder Variable 2754: T has? rom H [IF] 2755: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , H ( switchrom ) ;Build 2756: by (Constant) 2757: [ELSE] 2758: Build: T 0 , H ;Build 2759: by Create 2760: [THEN] 2761: 2762: Builder 2Variable 2763: T has? rom H [IF] 2764: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;Build 2765: by (Constant) 2766: [ELSE] 2767: Build: T 0 , 0 , H ;Build 2768: by Create 2769: [THEN] 2770: 2771: Builder AVariable 2772: T has? rom H [IF] 2773: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 A, H ( switchrom ) ;Build 2774: by (Constant) 2775: [ELSE] 2776: Build: T 0 A, H ;Build 2777: by Create 2778: [THEN] 2779: 2780: \ User variables 04may94py 2781: 2782: Variable tup 0 tup ! 2783: Variable tudp 0 tudp ! 2784: 2785: : u, ( n -- udp ) 2786: tup @ tudp @ + T ! H 2787: tudp @ dup T cell+ H tudp ! ; 2788: 2789: : au, ( n -- udp ) 2790: tup @ tudp @ + T A! H 2791: tudp @ dup T cell+ H tudp ! ; 2792: 2793: Builder User 2794: Build: 0 u, X , ;Build 2795: by: :douser ( ghost -- up-addr ) X @ tup @ + ;DO 2796: 2797: Builder 2User 2798: Build: 0 u, X , 0 u, drop ;Build 2799: by User 2800: 2801: Builder AUser 2802: Build: 0 au, X , ;Build 2803: by User 2804: 2805: Builder (Value) 2806: Build: ( n -- ) ;Build 2807: by: :docon ( target-body-addr -- n ) T @ H ;DO 2808: 2809: Builder Value 2810: BuildSmart: T , H ;Build 2811: by (Value) 2812: 2813: Builder AValue 2814: BuildSmart: T A, H ;Build 2815: by (Value) 2816: 2817: Defer texecute 2818: 2819: Builder Defer 2820: BuildSmart: ( -- ) [T'] noop T A, H ;Build 2821: by: :dodefer ( ghost -- ) X @ texecute ;DO 2822: 2823: Builder interpret/compile: 2824: Build: ( inter comp -- ) swap T A, A, H ;Build-immediate 2825: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO 2826: 2827: \ Sturctures 23feb95py 2828: 2829: : nalign ( addr1 n -- addr2 ) 2830: \ addr2 is the aligned version of addr1 wrt the alignment size n 2831: 1- tuck + swap invert and ; 2832: 2833: 2834: Builder (Field) 2835: Build: ;Build 2836: by: :dofield T @ H + ;DO 2837: 2838: Builder Field 2839: Build: ( align1 offset1 align size "name" -- align2 offset2 ) 2840: rot dup T , H ( align1 align size offset1 ) 2841: + >r nalign r> ;Build 2842: by (Field) 2843: 2844: >TARGET 2845: : struct T 1 chars 0 H ; 2846: : end-struct T 2Constant H ; 2847: 2848: : cell% ( n -- size align ) 2849: T 1 cells H dup ; 2850: >CROSS 2851: 2852: \ Input-Methods 01py 2853: 2854: Builder input-method 2855: Build: ( m v -- m' v ) dup T , cell+ H ;Build 2856: DO: abort" Not in cross mode" ;DO 2857: 2858: Builder input-var 2859: Build: ( m v size -- m v' ) over T , H + ;Build 2860: DO: abort" Not in cross mode" ;DO 2861: 2862: \ Peephole optimization 05sep01jaw 2863: 2864: \ this section defines different compilation 2865: \ actions for created words 2866: \ this will help the peephole optimizer 2867: \ I (jaw) took this from bernds latest cross-compiler 2868: \ changes but seperated it from the original 2869: \ Builder words. The final plan is to put this 2870: \ into a seperate file, together with the peephole 2871: \ optimizer for cross 2872: 2873: 2874: T has? peephole H [IF] 2875: 2876: >CROSS 2877: 2878: : (callc) compile call T >body a, H ; ' (callc) plugin-of colon, 2879: : (callcm) T here 0 a, 0 a, H ; ' (callcm) plugin-of colonmark, 2880: : (call-res) >tempdp resolved gexecute tempdp> drop ; 2881: ' (call-res) plugin-of colon-resolve 2882: : (pprim) dup 0< IF $4000 - ELSE 2883: cr ." wrong usage of (prim) " 2884: dup gdiscover IF .ghost ELSE . THEN cr -1 throw THEN 2885: T a, H ; ' (pprim) plugin-of prim, 2886: 2887: \ if we want this, we have to spilt aconstant 2888: \ and constant!! 2889: \ Builder (Constant) 2890: \ compile: g>body X @ lit, ;compile 2891: 2892: Builder (Constant) 2893: compile: g>body compile lit@ T a, H ;compile 2894: 2895: Builder (Value) 2896: compile: g>body compile lit@ T a, H ;compile 2897: 2898: \ this changes also Variable, AVariable and 2Variable 2899: Builder Create 2900: compile: g>body alit, ;compile 2901: 2902: Builder User 2903: compile: g>body compile useraddr T @ , H ;compile 2904: 2905: Builder Defer 2906: compile: g>body compile lit-perform T A, H ;compile 2907: 2908: Builder (Field) 2909: compile: g>body T @ H compile lit+ T , H ;compile 2910: 2911: Builder interpret/compile: 2912: compile: does-resolved ;compile 2913: 2914: Builder input-method 2915: compile: does-resolved ;compile 2916: 2917: Builder input-var 2918: compile: does-resolved ;compile 2919: 2920: [THEN] 2921: 2922: \ structural conditionals 17dec92py 2923: 2924: >CROSS 2925: : (ncontrols?) ( n -- ) 2926: \g We expect n open control structures 2927: depth over u<= 2928: ABORT" CROSS: unstructured, stack underflow" 2929: 0 ?DO I pick 0= 2930: ABORT" CROSS: unstructured" 2931: LOOP ; ' (ncontrols?) plugin-of ncontrols? 2932: 2933: \ : ?struc ( flag -- ) ABORT" CROSS: unstructured " ; 2934: \ : sys? ( sys -- sys ) dup 0= ?struc ; 2935: 2936: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ; 2937: 2938: : branchoffset ( src dest -- ) - tchar / ; \ ?? jaw 2939: 2940: : >resolve ( sys -- ) 2941: X here ( dup ." >" hex. ) over branchoffset swap X ! ; 2942: 2943: : <resolve ( sys -- ) 2944: X here ( dup ." <" hex. ) branchoffset X , ; 2945: 2946: :noname compile branch X here branchoffset X , ; 2947: IS branch, ( target-addr -- ) 2948: :noname compile ?branch X here branchoffset X , ; 2949: IS ?branch, ( target-addr -- ) 2950: :noname compile branch T here 0 , H ; 2951: IS branchmark, ( -- branchtoken ) 2952: :noname compile ?branch T here 0 , H ; 2953: IS ?branchmark, ( -- branchtoken ) 2954: :noname T here 0 , H ; 2955: IS ?domark, ( -- branchtoken ) 2956: :noname dup X @ ?struc X here over branchoffset swap X ! ; 2957: IS branchtoresolve, ( branchtoken -- ) 2958: :noname branchto, X here ; 2959: IS branchtomark, ( -- target-addr ) 2960: 2961: >TARGET 2962: 2963: \ Structural Conditionals 12dec92py 2964: 2965: \ CLEANUP Cond: BUT sys? swap ;Cond 2966: \ CLEANUP Cond: YET sys? dup ;Cond 2967: 2968: >CROSS 2969: 2970: Variable tleavings 0 tleavings ! 2971: 2972: : (done) ( addr -- ) 2973: tleavings @ 2974: BEGIN dup 2975: WHILE 2976: >r dup r@ cell+ @ \ address of branch 2977: u> 0= \ lower than DO? 2978: WHILE 2979: r@ 2 cells + @ \ branch token 2980: branchtoresolve, 2981: r@ @ r> free throw 2982: REPEAT r> THEN 2983: tleavings ! drop ; 2984: 2985: >TARGET 2986: 2987: \ What for? ANS? JAW Cond: DONE ( addr -- ) (done) ;Cond 2988: 2989: >CROSS 2990: : (leave) ( branchtoken -- ) 2991: 3 cells allocate throw >r 2992: T here H r@ cell+ ! 2993: r@ 2 cells + ! 2994: tleavings @ r@ ! 2995: r> tleavings ! ; 2996: >TARGET 2997: 2998: : (leave,) ( -- ) 2999: branchmark, (leave) ; ' (leave,) plugin-of leave, 3000: 3001: : (?leave,) ( -- ) 3002: compile 0= ?branchmark, (leave) ; ' (?leave,) plugin-of ?leave, 3003: 3004: Cond: LEAVE leave, ;Cond 3005: Cond: ?LEAVE ?leave, ;Cond 3006: 3007: >CROSS 3008: \ !!JW ToDo : Move to general tools section 3009: 3010: : to1 ( x1 x2 xn n -- addr ) 3011: \G packs n stack elements in am allocated memory region 3012: dup dup 1+ cells allocate throw dup >r swap 1+ 3013: 0 DO tuck ! cell+ LOOP 3014: drop r> ; 3015: 3016: : 1to ( addr -- x1 x2 xn ) 3017: \G unpacks the elements saved by to1 3018: dup @ swap over cells + swap 3019: 0 DO dup @ swap 1 cells - LOOP 3020: free throw ; 3021: 3022: : loop] branchto, dup <resolve tcell - (done) ; 3023: 3024: : skiploop] ?dup IF branchto, branchtoresolve, THEN ; 3025: 3026: >TARGET 3027: 3028: \ Structural Conditionals 12dec92py 3029: 3030: : (cs-swap) ( x1 x2 -- x2 x1 ) 3031: swap ; ' (cs-swap) plugin-of cs-swap 3032: 3033: : (ahead,) branchmark, ; ' (ahead,) plugin-of ahead, 3034: 3035: : (if,) ?branchmark, ; ' (if,) plugin-of if, 3036: 3037: : (then,) branchto, branchtoresolve, ; ' (then,) plugin-of then, 3038: 3039: : (else,) ( ahead ) branchmark, 3040: swap 3041: ( then ) branchto, branchtoresolve, ; ' (else,) plugin-of else, 3042: 3043: : (begin,) branchtomark, ; ' (begin,) plugin-of begin, 3044: 3045: : (while,) ( if ) ?branchmark, 3046: swap ; ' (while,) plugin-of while, 3047: 3048: : (again,) branch, ; ' (again,) plugin-of again, 3049: 3050: : (until,) ?branch, ; ' (until,) plugin-of until, 3051: 3052: : (repeat,) ( again ) branch, 3053: ( then ) branchto, branchtoresolve, ; ' (repeat,) plugin-of repeat, 3054: 3055: : (case,) ( -- n ) 3056: 0 ; ' (case,) plugin-of case, 3057: 3058: : (of,) ( n -- x1 n ) 3059: 1+ >r 3060: compile over compile = 3061: if, compile drop r> ; ' (of,) plugin-of of, 3062: 3063: : (endof,) ( x1 n -- x2 n ) 3064: >r 1 ncontrols? else, r> ; ' (endof,) plugin-of endof, 3065: 3066: : (endcase,) ( x1 .. xn n -- ) 3067: compile drop 0 ?DO 1 ncontrols? then, LOOP ; ' (endcase,) plugin-of endcase, 3068: 3069: >TARGET 3070: Cond: AHEAD ahead, ;Cond 3071: Cond: IF if, ;Cond 3072: Cond: THEN 1 ncontrols? then, ;Cond 3073: Cond: ENDIF 1 ncontrols? then, ;Cond 3074: Cond: ELSE 1 ncontrols? else, ;Cond 3075: 3076: Cond: BEGIN begin, ;Cond 3077: Cond: WHILE 1 ncontrols? while, ;Cond 3078: Cond: AGAIN 1 ncontrols? again, ;Cond 3079: Cond: UNTIL 1 ncontrols? until, ;Cond 3080: Cond: REPEAT 2 ncontrols? repeat, ;Cond 3081: 3082: Cond: CASE case, ;Cond 3083: Cond: OF of, ;Cond 3084: Cond: ENDOF endof, ;Cond 3085: Cond: ENDCASE endcase, ;Cond 3086: 3087: \ Structural Conditionals 12dec92py 3088: 3089: : (do,) ( -- target-addr ) 3090: \ ?? i think 0 is too much! jaw 3091: 0 compile (do) 3092: branchtomark, 2 to1 ; ' (do,) plugin-of do, 3093: 3094: \ alternative for if no ?do 3095: \ : (do,) 3096: \ compile 2dup compile = compile IF 3097: \ compile 2drop compile ELSE 3098: \ compile (do) branchtomark, 2 to1 ; 3099: 3100: : (?do,) ( -- target-addr ) 3101: 0 compile (?do) ?domark, (leave) 3102: branchtomark, 2 to1 ; ' (?do,) plugin-of ?do, 3103: 3104: : (for,) ( -- target-addr ) 3105: compile (for) branchtomark, ; ' (for,) plugin-of for, 3106: 3107: : (loop,) ( target-addr -- ) 3108: 1to compile (loop) loop] 3109: compile unloop skiploop] ; ' (loop,) plugin-of loop, 3110: 3111: : (+loop,) ( target-addr -- ) 3112: 1to compile (+loop) loop] 3113: compile unloop skiploop] ; ' (+loop,) plugin-of +loop, 3114: 3115: : (next,) 3116: compile (next) loop] compile unloop ; ' (next,) plugin-of next, 3117: 3118: Cond: DO do, ;Cond 3119: Cond: ?DO ?do, ;Cond 3120: Cond: FOR for, ;Cond 3121: 3122: Cond: LOOP 1 ncontrols? loop, ;Cond 3123: Cond: +LOOP 1 ncontrols? +loop, ;Cond 3124: Cond: NEXT 1 ncontrols? next, ;Cond 3125: 3126: \ String words 23feb93py 3127: 3128: : ," [char] " parse ht-string, X align ; 3129: 3130: Cond: ." compile (.") T ," H ;Cond 3131: Cond: S" compile (S") T ," H ;Cond 3132: Cond: C" compile (C") T ," H ;Cond 3133: Cond: ABORT" compile (ABORT") T ," H ;Cond 3134: 3135: Cond: IS T ' >body H compile ALiteral compile ! ;Cond 3136: : IS T >address ' >body ! H ; 3137: Cond: TO T ' >body H compile ALiteral compile ! ;Cond 3138: : TO T ' >body ! H ; 3139: 3140: Cond: defers T ' >body @ compile, H ;Cond 3141: 3142: \ LINKED ERR" ENV" 2ENV" 18may93jaw 3143: 3144: \ linked list primitive 3145: : linked X here over X @ X A, swap X ! ; 3146: : chained T linked A, H ; 3147: 3148: : err" s" ErrLink linked" evaluate T , H 3149: [char] " parse ht-string, X align ; 3150: 3151: : env" [char] " parse s" EnvLink linked" evaluate 3152: ht-string, X align X , ; 3153: 3154: : 2env" [char] " parse s" EnvLink linked" evaluate 3155: here >r ht-string, X align X , X , 3156: r> dup T c@ H 80 and swap T c! H ; 3157: 3158: \ compile must be last 22feb93py 3159: 3160: Cond: [compile] ( -- ) \ name 3161: \g For immediate words, works even if forward reference 3162: bl word gfind 0= ABORT" CROSS: Can't compile" 3163: (gexecute) ;Cond 3164: 3165: Cond: postpone ( -- ) \ name 3166: bl word gfind 0= ABORT" CROSS: Can't compile" 3167: dup >magic @ <fwd> = 3168: ABORT" CROSS: Can't postpone on forward declaration" 3169: dup >magic @ <imm> = 3170: IF (gexecute) 3171: ELSE compile (compile) addr, THEN ;Cond 3172: 3173: \ save-cross 17mar93py 3174: 3175: hex 3176: 3177: >CROSS 3178: Create magic s" Gforth2x" here over allot swap move 3179: 3180: bigendian 1+ \ strangely, in magic big=0, little=1 3181: tcell 1 = 0 and or 3182: tcell 2 = 2 and or 3183: tcell 4 = 4 and or 3184: tcell 8 = 6 and or 3185: tchar 1 = 00 and or 3186: tchar 2 = 28 and or 3187: tchar 4 = 50 and or 3188: tchar 8 = 78 and or 3189: magic 7 + c! 3190: 3191: : save-cross ( "image-name" "binary-name" -- ) 3192: bl parse ." Saving to " 2dup type cr 3193: w/o bin create-file throw >r 3194: s" header" X $has? IF 3195: s" #! " r@ write-file throw 3196: bl parse r@ write-file throw 3197: s" --image-file" r@ write-file throw 3198: #lf r@ emit-file throw 3199: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index ) 3200: ?do 3201: bl over emit-file throw 3202: loop 3203: drop 3204: magic 8 r@ write-file throw \ write magic 3205: ELSE 3206: bl parse 2drop 3207: THEN 3208: image @ there 3209: r@ write-file throw \ write image 3210: s" relocate" X $has? IF 3211: bit$ @ there 1- tcell>bit rshift 1+ 3212: r@ write-file throw \ write tags 3213: THEN 3214: r> close-file throw ; 3215: 3216: : save-region ( addr len -- ) 3217: bl parse w/o bin create-file throw >r 3218: swap >image swap r@ write-file throw 3219: r> close-file throw ; 3220: 3221: \ save-asm-region 29aug01jaw 3222: 3223: Variable name-ptr 3224: Create name-buf 200 chars allot 3225: : init-name-buf name-buf name-ptr ! ; 3226: : nb, name-ptr @ c! 1 chars name-ptr +! ; 3227: : $nb, ( adr len -- ) bounds ?DO I c@ nb, LOOP ; 3228: : @nb name-ptr @ name-buf tuck - ; 3229: 3230: \ stores a usefull string representation of the character 3231: \ in the name buffer 3232: : name-char, ( c -- ) 3233: dup 'a 'z 1+ within IF nb, EXIT THEN 3234: dup 'A 'Z 1+ within IF $20 + nb, EXIT THEN 3235: dup '0 '9 1+ within IF nb, EXIT THEN 3236: CASE '+ OF s" _PLUS" $nb, ENDOF 3237: '- OF s" _MINUS" $nb, ENDOF 3238: '* OF s" _STAR" $nb, ENDOF 3239: '/ OF s" _SLASH" $nb, ENDOF 3240: '' OF s" _TICK" $nb, ENDOF 3241: '( OF s" _OPAREN" $nb, ENDOF 3242: ') OF s" _CPAREN" $nb, ENDOF 3243: '[ OF s" _OBRACKET" $nb, ENDOF 3244: '] OF s" _CBRACKET" $nb, ENDOF 3245: '! OF s" _STORE" $nb, ENDOF 3246: '@ OF s" _FETCH" $nb, ENDOF 3247: '> OF s" _GREATER" $nb, ENDOF 3248: '< OF s" _LESS" $nb, ENDOF 3249: '= OF s" _EQUAL" $nb, ENDOF 3250: '# OF s" _HASH" $nb, ENDOF 3251: '? OF s" _QUEST" $nb, ENDOF 3252: ': OF s" _COL" $nb, ENDOF 3253: '; OF s" _SEMICOL" $nb, ENDOF 3254: ', OF s" _COMMA" $nb, ENDOF 3255: '. OF s" _DOT" $nb, ENDOF 3256: '" OF s" _DQUOT" $nb, ENDOF 3257: dup 3258: base @ >r hex s>d <# #s 'X hold '_ hold #> $nb, r> base ! 3259: ENDCASE ; 3260: 3261: : label-from-ghostname ( ghost -- addr len ) 3262: dup >ghostname init-name-buf 'L nb, bounds 3263: ?DO I c@ name-char, LOOP 3264: \ we add the address to a name to make in unique 3265: \ because one name may appear more then once 3266: \ there are names (e.g. boot) that may be reference from other 3267: \ assembler source files, so we declare them as unique 3268: \ and don't add the address suffix 3269: dup >ghost-flags @ <unique> and 0= 3270: IF s" __" $nb, >link @ base @ >r hex 0 <# #s 'L hold #> r> base ! $nb, 3271: ELSE drop 3272: THEN 3273: @nb ; 3274: 3275: \ FIXME why disabled?! 3276: : label-from-ghostnameXX ( ghost -- addr len ) 3277: \ same as (label-from-ghostname) but caches generated names 3278: dup >asm-name @ ?dup IF nip count EXIT THEN 3279: \ dup >r (label-from-ghostname) 2dup 3280: align here >r string, align 3281: r> r> >asm-name ! ; 3282: 3283: : primghostdiscover ( xt -- ghost true | xt false ) 3284: dup 0= IF false EXIT THEN 3285: >r last-prim-ghost 3286: BEGIN @ dup 3287: WHILE dup >asm-dummyaddr @ r@ = 3288: IF rdrop true EXIT THEN 3289: REPEAT 3290: drop r> false ; 3291: 3292: : gdiscover2 ( xt -- ghost true | xt false ) 3293: dup taddr>region 0= IF false EXIT THEN 3294: dup (>regiontype) @ dup 0= IF drop false EXIT THEN 3295: addr-xt-ghost @ dup 0= IF drop false EXIT THEN 3296: nip true ; 3297: \ dup >ghost-name @ IF nip true ELSE drop false THEN ; 3298: 3299: \ generates a label name for the target address 3300: : generate-label-name ( taddr -- addr len ) 3301: gdiscover2 3302: IF dup >magic @ <do:> = 3303: IF >asm-name @ count EXIT THEN 3304: label-from-ghostname 3305: ELSE 3306: primghostdiscover 3307: IF >asm-name @ count 3308: ELSE base @ >r hex 0 <# #s 'L hold #> r> base ! 3309: THEN 3310: THEN ; 3311: 3312: Variable outfile-fd 3313: 3314: : $out ( adr len -- ) outfile-fd @ write-file throw ; 3315: : nlout newline $out ; 3316: : .ux ( n -- ) 3317: base @ hex swap 0 <# #S #> $out base ! ; 3318: 3319: : save-asm-region-part-aligned ( taddr len -- 'taddr 'len ) 3320: dup cell/ 0 3321: ?DO nlout s" .word " $out over @relbit 3322: IF over X @ generate-label-name $out 3323: ELSE over X @ s" 0x0" $out .ux 3324: THEN 3325: tcell /string 3326: LOOP ; 3327: 3328: : print-bytes ( taddr len n -- taddr' len' ) 3329: over min dup 0> 3330: IF nlout s" .byte " $out 0 3331: ?DO I 0> IF s" , " $out THEN 3332: over X c@ s" 0x0" $out .ux 1 /string 3333: LOOP 3334: THEN ; 3335: 3336: : save-asm-region-part ( addr len -- ) 3337: over dup X aligned swap - ?dup 3338: IF print-bytes THEN 3339: save-asm-region-part-aligned 3340: dup dup X aligned swap - ?dup 3341: IF 2 pick @relbit ABORT" relocated field splitted" 3342: print-bytes 3343: THEN 3344: 2drop ; 3345: 3346: : print-label ( taddr -- ) 3347: nlout generate-label-name $out s" :" $out ; 3348: 3349: : snl-calc ( taddr taddr2 -- ) 3350: tuck over - ; 3351: 3352: : skip-nolables ( taddr -- taddr2 taddr len ) 3353: \G skips memory region where no lables are defined 3354: \G starting from taddr+1 3355: \G Labels will be introduced for each reference mark 3356: \G in addr-refs. 3357: \G This word deals with lables at byte addresses as well. 3358: \G The main idea is to have an intro part which 3359: \G skips until the next cell boundary, the middle part 3360: \G which skips whole cells very efficiently and the third 3361: \G part which skips the bytes to the label in a cell 3362: dup 1+ dup (>regiontype) 3363: ( S taddr taddr-realstart type-addr ) 3364: dup @ dup IF addr-refs @ THEN 3365: swap >r 3366: over align+ tuck tcell swap - rshift swap 0 3367: DO dup 1 and 3368: IF drop rdrop snl-calc UNLOOP EXIT THEN 3369: 2/ swap 1+ swap 3370: LOOP 3371: drop r> cell+ 3372: ( S .. taddr2 type-addr ) dup 3373: BEGIN dup @ dup IF addr-refs @ THEN 0= WHILE cell+ REPEAT 3374: dup >r swap - 1 cells / tcell * + r> 3375: ( S .. taddr2+skiplencells type-addr ) 3376: @ addr-refs @ 1 tcell lshift or 3377: BEGIN dup 1 and 0= WHILE swap 1+ swap 2/ REPEAT drop 3378: ( S .. taddr2+skiplencells+skiplenbytes ) 3379: snl-calc ; 3380: 3381: : insert-label ( taddr -- ) 3382: dup 0= IF drop EXIT THEN 3383: \ ignore everything which points outside our memory regions 3384: \ maybe a primitive pointer or whatever 3385: dup taddr>region 0= IF drop EXIT THEN 3386: dup >r (>regiontype) define-addr-struct addr-refs dup @ 3387: r> tcell 1- and 1 swap lshift or swap ! ; 3388: 3389: \ this generates a sorted list of addresses which must be labels 3390: \ it scans therefore a whole region 3391: : generate-label-list-region ( taddr len -- ) 3392: BEGIN over @relbit IF over X @ insert-label THEN 3393: tcell /string dup 0< 3394: UNTIL 2drop ; 3395: 3396: : generate-label-list ( -- ) 3397: region-link 3398: BEGIN @ dup WHILE 3399: dup 0 >rlink - extent 3400: ?dup IF generate-label-list-region ELSE drop THEN 3401: REPEAT drop ; 3402: 3403: : create-outfile ( addr len -- ) 3404: w/o bin create-file throw outfile-fd ! ; 3405: 3406: : close-outfile ( -- ) 3407: outfile-fd @ close-file throw ; 3408: 3409: : (save-asm-region) ( region -- ) 3410: \ ." label list..." 3411: generate-label-list 3412: \ ." ok!" cr 3413: extent ( S taddr len ) 3414: over insert-label 3415: 2dup + dup insert-label >r ( R end-label ) 3416: ( S taddr len ) drop 3417: BEGIN 3418: dup print-label 3419: dup r@ <> WHILE 3420: skip-nolables save-asm-region-part 3421: REPEAT drop rdrop ; 3422: 3423: : lineout ( addr len -- ) 3424: outfile-fd @ write-line throw ; 3425: 3426: : save-asm-region ( region adr len -- ) 3427: create-outfile (save-asm-region) close-outfile ; 3428: 3429: \ \ minimal definitions 3430: 3431: >MINIMAL also minimal 3432: 3433: \ Usefull words 13feb93py 3434: 3435: : KB 400 * ; 3436: 3437: \ \ [IF] [ELSE] [THEN] ... 14sep97jaw 3438: 3439: \ it is useful to define our own structures and not to rely 3440: \ on the words in the host system 3441: \ The words in the host system might be defined with vocabularies 3442: \ this doesn't work with our self-made compile-loop 3443: 3444: Create parsed 20 chars allot \ store word we parsed 3445: 3446: : upcase 3447: parsed count bounds 3448: ?DO I c@ toupper I c! LOOP ; 3449: 3450: : [ELSE] 3451: 1 BEGIN 3452: BEGIN bl word count dup WHILE 3453: comment? 20 umin parsed place upcase parsed count 3454: 2dup s" [IF]" compare 0= >r 3455: 2dup s" [IFUNDEF]" compare 0= >r 3456: 2dup s" [IFDEF]" compare 0= r> or r> or 3457: IF 2drop 1+ 3458: ELSE 2dup s" [ELSE]" compare 0= 3459: IF 2drop 1- dup 3460: IF 1+ 3461: THEN 3462: ELSE 3463: 2dup s" [ENDIF]" compare 0= >r 3464: s" [THEN]" compare 0= r> or 3465: IF 1- THEN 3466: THEN 3467: THEN 3468: ?dup 0= ?EXIT 3469: REPEAT 3470: 2drop refill 0= 3471: UNTIL drop ; immediate 3472: 3473: : [THEN] ( -- ) ; immediate 3474: 3475: : [ENDIF] ( -- ) ; immediate 3476: 3477: : [IF] ( flag -- ) 3478: 0= IF postpone [ELSE] THEN ; immediate 3479: 3480: Cond: [IF] postpone [IF] ;Cond 3481: Cond: [THEN] postpone [THEN] ;Cond 3482: Cond: [ELSE] postpone [ELSE] ;Cond 3483: 3484: \ define new [IFDEF] and [IFUNDEF] 20may93jaw 3485: 3486: : defined? tdefined? ; 3487: : needed? needed? ; 3488: : doer? doer? ; 3489: 3490: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too 3491: 3492: : directive? 3493: bl word count [ ' target >wordlist ] literal search-wordlist 3494: dup IF nip THEN ; 3495: 3496: : [IFDEF] >in @ directive? swap >in ! 3497: 0= IF tdefined? ELSE name 2drop true THEN 3498: postpone [IF] ; 3499: 3500: : [IFUNDEF] tdefined? 0= postpone [IF] ; 3501: 3502: Cond: [IFDEF] postpone [IFDEF] ;Cond 3503: 3504: Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond 3505: 3506: \ C: \- \+ Conditional Compiling 09jun93jaw 3507: 3508: : C: >in @ tdefined? 0= 3509: IF >in ! X : 3510: ELSE drop 3511: BEGIN bl word dup c@ 3512: IF count comment? s" ;" compare 0= ?EXIT 3513: ELSE refill 0= ABORT" CROSS: Out of Input while C:" 3514: THEN 3515: AGAIN 3516: THEN ; 3517: 3518: : d? d? ; 3519: 3520: : \D ( -- "debugswitch" ) 3521: \G doesn't skip line when debug switch is on 3522: D? 0= IF postpone \ THEN ; 3523: 3524: : \- ( -- "wordname" ) 3525: \G interprets the line if word is not defined 3526: tdefined? IF postpone \ THEN ; 3527: 3528: : \+ ( -- "wordname" ) 3529: \G interprets the line if word is defined 3530: tdefined? 0= IF postpone \ THEN ; 3531: 3532: : \? ( -- "envorinstring" ) 3533: \G Skip line if environmental variable evaluates to false 3534: X has? 0= IF postpone \ THEN ; 3535: 3536: Cond: \- \- ;Cond 3537: Cond: \+ \+ ;Cond 3538: Cond: \D \D ;Cond 3539: Cond: \? \? ;Cond 3540: 3541: : ?? bl word find IF execute ELSE drop 0 THEN ; 3542: 3543: : needed: 3544: \G defines ghost for words that we want to be compiled 3545: BEGIN >in @ bl word c@ WHILE >in ! Ghost drop REPEAT drop ; 3546: 3547: \ words that should be in minimal 3548: 3549: create s-buffer 50 chars allot 3550: 3551: bigendian Constant bigendian 3552: 3553: : here there ; 3554: : equ constant ; 3555: : mark there constant ; 3556: 3557: \ compiler directives 3558: : >ram >ram ; 3559: : >rom >rom ; 3560: : >auto >auto ; 3561: : >tempdp >tempdp ; 3562: : tempdp> tempdp> ; 3563: : const constflag on ; 3564: 3565: : Redefinitions-start 3566: \G Starts a redefinition section. Warnings are disabled and 3567: \G existing ghosts are reused. This is used in the kernel 3568: \G where ( and \ and the like are redefined 3569: twarnings off warnings off reuse-ghosts on ; 3570: 3571: : Redefinitions-end 3572: \G Ends a redefinition section. Warnings are enabled again. 3573: twarnings on warnings on reuse-ghosts off ; 3574: 3575: : warnings name 3 = 3576: IF twarnings off warnings off ELSE twarnings on warnings on THEN drop ; 3577: 3578: : | ; 3579: \ : | NoHeaderFlag on ; \ This is broken (damages the last word) 3580: 3581: : save-cross save-cross ; 3582: : save-region save-region ; 3583: : tdump swap >image swap dump ; 3584: 3585: also forth 3586: [IFDEF] Label : Label defempty? Label ; [THEN] 3587: [IFDEF] start-macros : start-macros defempty? start-macros ; [THEN] 3588: \ [IFDEF] builttag : builttag builttag ; [THEN] 3589: previous 3590: 3591: : s" [char] " parse s-buffer place s-buffer count ; \ for environment? 3592: : + + ; 3593: : 1+ 1 + ; 3594: : 2+ 2 + ; 3595: : 1- 1- ; 3596: : - - ; 3597: : and and ; 3598: : or or ; 3599: : 2* 2* ; 3600: : * * ; 3601: : / / ; 3602: : dup dup ; 3603: : over over ; 3604: : swap swap ; 3605: : rot rot ; 3606: : drop drop ; 3607: : = = ; 3608: : <> <> ; 3609: : 0= 0= ; 3610: : lshift lshift ; 3611: : 2/ 2/ ; 3612: \ : . . ; 3613: 3614: : all-words ['] forced? IS skip? ; 3615: : needed-words ['] needed? IS skip? ; 3616: : undef-words ['] defined2? IS skip? ; 3617: : skipdef skipdef ; 3618: 3619: : \ postpone \ ; immediate 3620: : \G T-\G ; immediate 3621: : ( postpone ( ; immediate 3622: : include bl word count included ; 3623: : included swap >image swap included ; 3624: : require require ; 3625: : needs require ; 3626: : .( [char] ) parse type ; 3627: : ." [char] " parse type ; 3628: : cr cr ; 3629: 3630: : times 0 ?DO dup X c, LOOP drop ; \ used for space table creation 3631: 3632: \ only forth also cross also minimal definitions order 3633: 3634: \ cross-compiler words 3635: 3636: : decimal decimal [g'] decimal >exec2 @ ?dup IF EXECUTE THEN ; 3637: : hex hex [g'] hex >exec2 @ ?dup IF EXECUTE THEN ; 3638: 3639: \ : tudp X tudp ; 3640: \ : tup X tup ; 3641: 3642: : doc-off false to-doc ! ; 3643: : doc-on true to-doc ! ; 3644: 3645: : declareunique ( "name" -- ) 3646: \G Sets the unique flag for a ghost. The assembler output 3647: \G generates labels with the ghostname concatenated with the address 3648: \G while cross-compiling. The address is concatenated 3649: \G because we have double occurences of the same name. 3650: \G If we want to reference the labels from the assembler or C 3651: \G code we declare them unique, so the address is skipped. 3652: Ghost >ghost-flags dup @ <unique> or swap ! ; 3653: 3654: \ [IFDEF] dbg : dbg dbg ; [THEN] 3655: 3656: \ for debugging... 3657: \ : dbg dbg ; 3658: : horder order ; 3659: : hwords words ; 3660: \ : words also ghosts 3661: \ words previous ; 3662: : .s .s ; 3663: : depth depth ; 3664: : bye bye ; 3665: 3666: \ dummy 3667: : group 0 word drop ; 3668: 3669: \ turnkey direction 3670: : H forth ; immediate 3671: : T minimal ; immediate 3672: : G ghosts ; immediate 3673: 3674: 3675: \ these ones are pefered: 3676: 3677: : unlock previous forth also cross ; 3678: 3679: \ also minimal 3680: >cross 3681: 3682: : turnkey 3683: ghosts-wordlist 1 set-order 3684: also target definitions 3685: also Minimal also ; 3686: 3687: >minimal 3688: 3689: : [[+++ 3690: turnkey unlock ; 3691: 3692: unlock definitions also minimal 3693: 3694: : lock turnkey ; 3695: 3696: Defer +++]]-hook 3697: : +++]] +++]]-hook lock ; 3698: 3699: LOCK 3700: \ load cross compiler extension defined in mach file 3701: 3702: UNLOCK >CROSS 3703: 3704: [IFDEF] extend-cross extend-cross [THEN] 3705: 3706: LOCK