cross.fs 96.6 KB
Newer Older
anton's avatar
anton committed
1 2
\ CROSS.FS     The Cross-Compiler                      06oct92py
\ Idea and implementation: Bernd Paysan (py)
anton's avatar
anton committed
3

anton's avatar
anton committed
4
\ Copyright (C) 1995,1996,1997,1998,1999,2000,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
anton's avatar
anton committed
5 6 7 8 9

\ This file is part of Gforth.

\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
anton's avatar
anton committed
10
\ as published by the Free Software Foundation, either version 3
anton's avatar
anton committed
11 12 13 14 15 16 17 18
\ of the License, or (at your option) any later version.

\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
\ GNU General Public License for more details.

\ You should have received a copy of the GNU General Public License
anton's avatar
anton committed
19
\ along with this program. If not, see http://www.gnu.org/licenses/.
anton's avatar
anton committed
20

jwilke's avatar
jwilke committed
21 22 23 24
0 
[IF]

ToDo:
jwilke's avatar
jwilke committed
25 26 27 28
- Crossdoc destination ./doc/crossdoc.fd makes no sense when
  cross.fs is used seperately. jaw
- Do we need this char translation with >address and in branchoffset? 
  (>body also affected) jaw
jwilke's avatar
jwilke committed
29 30

[THEN]
anton's avatar
anton committed
31

32 33
s" compat/strcomp.fs" included

jwilke's avatar
jwilke committed
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
hex

\ debugging for compiling

\ print stack at each colon definition
\ : : save-input cr bl word count type restore-input throw .s : ;

\ print stack at each created word
\ : create save-input cr bl word count type restore-input throw .s create ;


\ \ -------------  Setup Vocabularies

\ Remark: Vocabulary is not ANS, but it should work...

Vocabulary Cross
Vocabulary Target
Vocabulary Ghosts
Vocabulary Minimal
only Forth also Target also also
definitions Forth

jwilke's avatar
jwilke committed
56
: T  previous Ghosts also Target ; immediate
jwilke's avatar
jwilke committed
57 58 59 60 61
: G  Ghosts ; immediate
: H  previous Forth also Cross ; immediate

forth definitions

jwilke's avatar
jwilke committed
62
: T  previous Ghosts also Target ; immediate
jwilke's avatar
jwilke committed
63 64
: G  Ghosts ; immediate

65

jwilke's avatar
jwilke committed
66 67 68 69 70 71 72 73
: >cross  also Cross definitions previous ;
: >target also Target definitions previous ;
: >minimal also Minimal definitions previous ;

H

>CROSS

jwilke's avatar
jwilke committed
74 75 76 77
\ Test against this definitions to find out whether we are cross-compiling
\ may be usefull for assemblers
0 Constant gforth-cross-indicator

jwilke's avatar
jwilke committed
78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
\ find out whether we are compiling with gforth

: defined? bl word find nip ;
defined? emit-file defined? toupper and \ drop 0
[IF]
\ use this in a gforth system
: \GFORTH ; immediate
: \ANSI postpone \ ; immediate
[ELSE]
: \GFORTH postpone \ ; immediate
: \ANSI ; immediate
[THEN]

\ANSI : [IFUNDEF] defined? 0= postpone [IF] ; immediate
\ANSI : [IFDEF] defined? postpone [IF] ; immediate
0 \ANSI drop 1
[IF]
: \G postpone \ ; immediate
: rdrop postpone r> postpone drop ; immediate
: name bl word count ;
: bounds over + swap ;
: scan >r BEGIN dup WHILE over c@ r@ <> WHILE 1 /string REPEAT THEN rdrop ;
: linked here over @ , swap ! ;
: alias create , DOES> @ EXECUTE ;
: defer ['] noop alias ;
: is state @ 
  IF ' >body postpone literal postpone ! 
  ELSE ' >body ! THEN ; immediate
: 0>= 0< 0= ;
: d<> rot <> -rot <> or ;
: toupper dup [char] a [char] z 1+ within IF [char] A [char] a - + THEN ;
Variable ebuf
: emit-file ( c fd -- ior ) swap ebuf c! ebuf 1 chars rot write-file ;
0a Constant #lf
0d Constant #cr

[IFUNDEF] Warnings Variable Warnings [THEN]

\ \ Number parsing					23feb93py

\ number? number                                       23feb93py

Variable dpl

hex
Create bases   10 ,   2 ,   A , 100 ,
\              16     2    10   character

\ !! protect BASE saving wrapper against exceptions
: getbase ( addr u -- addr' u' )
    over c@ [char] $ - dup 4 u<
    IF
	cells bases + @ base ! 1 /string
    ELSE
	drop
    THEN ;

: sign? ( addr u -- addr u flag )
    over c@ [char] - =  dup >r
    IF
	1 /string
    THEN
    r> ;

: s>unumber? ( addr u -- ud flag )
jwilke's avatar
jwilke committed
143 144 145 146
    over [char] ' =
    IF 	\ a ' alone is rather unusual :-)
	drop char+ c@ 0 true EXIT 
    THEN
jwilke's avatar
jwilke committed
147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
    base @ >r  dpl on  getbase
    0. 2swap
    BEGIN ( d addr len )
	dup >r >number dup
    WHILE \ there are characters left
	dup r> -
    WHILE \ the last >number parsed something
	dup 1- dpl ! over c@ [char] . =
    WHILE \ the current char is '.'
	1 /string
    REPEAT  THEN \ there are unparseable characters left
	2drop false
    ELSE
	rdrop 2drop true
    THEN
    r> base ! ;

\ ouch, this is complicated; there must be a simpler way - anton
: s>number? ( addr len -- d f )
    \ converts string addr len into d, flag indicates success
    sign? >r
    s>unumber?
    0= IF
        rdrop false
    ELSE \ no characters left, all ok
	r>
	IF
	    dnegate
	THEN
	true
    THEN ;

: s>number ( addr len -- d )
    \ don't use this, there is no way to tell success
    s>number? drop ;

: snumber? ( c-addr u -- 0 / n -1 / d 0> )
    s>number? 0=
    IF
	2drop false  EXIT
    THEN
    dpl @ dup 0< IF
	nip
    ELSE
	1+
    THEN ;

: number? ( string -- string 0 / n -1 / d 0> )
    dup >r count snumber? dup if
	rdrop
    else
	r> swap
    then ;

: number ( string -- d )
    number? ?dup 0= abort" ?"  0<
    IF
	s>d
    THEN ;

[THEN]
anton's avatar
anton committed
208

209 210 211 212 213 214 215
\ this provides assert( and struct stuff
\GFORTH [IFUNDEF] assert1(
\GFORTH also forth definitions require assert.fs previous
\GFORTH [THEN]

>CROSS

jwilke's avatar
jwilke committed
216
hex     \ the defualt base for the cross-compiler is hex !!
jwilke's avatar
jwilke committed
217
\ Warnings off
jwilke's avatar
jwilke committed
218 219 220

\ words that are generaly useful

221
: KB  400 * ;
jwilke's avatar
jwilke committed
222 223 224 225 226
: >wordlist ( vocabulary-xt -- wordlist-struct )
  also execute get-order swap >r 1- set-order r> ;

: umax 2dup u< IF swap THEN drop ;
: umin 2dup u> IF swap THEN drop ;
anton's avatar
anton committed
227

pazsan's avatar
pazsan committed
228 229 230
: string, ( c-addr u -- )
    \ puts down string as cstring
    dup c, here swap chars dup allot move ;
231

jwilke's avatar
jwilke committed
232 233
: ," [char] " parse string, ;

jwilke's avatar
jwilke committed
234
: SetValue ( n -- <name> )
pazsan's avatar
pazsan committed
235 236
\G Same behaviour as "Value" if the <name> is not defined
\G Same behaviour as "to" if <name> is defined
jwilke's avatar
jwilke committed
237
\G SetValue searches in the current vocabulary
jwilke's avatar
jwilke committed
238 239 240 241 242 243
  save-input bl word >r restore-input throw r> count
  get-current search-wordlist
  IF	drop >r
	\ we have to set current to be topmost context wordlist
	get-order get-order get-current swap 1+ set-order
	r> ['] to execute
jwilke's avatar
jwilke committed
244
	set-order
jwilke's avatar
jwilke committed
245
  ELSE Value THEN ;
jwilke's avatar
jwilke committed
246 247

: DefaultValue ( n -- <name> )
pazsan's avatar
pazsan committed
248 249
\G Same behaviour as "Value" if the <name> is not defined
\G DefaultValue searches in the current vocabulary
jwilke's avatar
jwilke committed
250 251
 save-input bl word >r restore-input throw r> count
 get-current search-wordlist
252
 IF bl word drop 2drop ELSE Value THEN ;
anton's avatar
anton committed
253 254 255

hex

jwilke's avatar
jwilke committed
256
\ FIXME delete`
jwilke's avatar
jwilke committed
257 258 259
\ 1 Constant Cross-Flag	\ to check whether assembler compiler plug-ins are
			\ for cross-compiling
\ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
pazsan's avatar
pazsan committed
260

jwilke's avatar
jwilke committed
261
\ FIXME move down
jwilke's avatar
jwilke committed
262
: comment? ( c-addr u -- c-addr u )
263
        2dup s" (" str=
jwilke's avatar
jwilke committed
264
        IF    postpone (
265
        ELSE  2dup s" \" str= IF postpone \ THEN
jwilke's avatar
jwilke committed
266
        THEN ;
pazsan's avatar
pazsan committed
267

jwilke's avatar
jwilke committed
268 269 270 271 272 273 274 275
: X ( -- <name> )
\G The next word in the input is a target word.
\G Equivalent to T <name> but without permanent
\G switch to target dictionary. Used as prefix e.g. for @, !, here etc.
  bl word count [ ' target >wordlist ] Literal search-wordlist
  IF state @ IF compile, ELSE execute THEN
  ELSE	-1 ABORT" Cross: access method not supported!"
  THEN ; immediate
276

jwilke's avatar
jwilke committed
277
\ Begin CROSS COMPILER:
anton's avatar
anton committed
278

jwilke's avatar
jwilke committed
279
\ debugging
jwilke's avatar
jwilke committed
280

jwilke's avatar
jwilke committed
281 282 283 284 285 286 287 288 289
0 [IF]

This implements debugflags for the cross compiler and the compiled
images. It works identical to the has-flags in the environment.
The debugflags are defined in a vocabluary. If the word exists and
its value is true, the flag is switched on.

[THEN]

jwilke's avatar
jwilke committed
290 291
>CROSS

jwilke's avatar
jwilke committed
292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
Vocabulary debugflags	\ debug flags for cross
also debugflags get-order over
Constant debugflags-wl
set-order previous

: DebugFlag
  get-current >r debugflags-wl set-current
  SetValue
  r> set-current ;

: Debug? ( adr u -- flag )
\G return true if debug flag is defined or switched on
  debugflags-wl search-wordlist
  IF EXECUTE
  ELSE false THEN ;

: D? ( <name> -- flag )
\G return true if debug flag is defined or switched on
\G while compiling we do not return the current value but
  bl word count debug? ;

: [d?]
\G compile the value-xt so the debug flag can be switched
\G the flag must exist!
  bl word count debugflags-wl search-wordlist
  IF 	compile,
  ELSE  -1 ABORT" unknown debug flag"
	\ POSTPONE false 
  THEN ; immediate
pazsan's avatar
pazsan committed
321

jwilke's avatar
jwilke committed
322 323 324 325 326 327 328 329 330 331 332 333
: symentry ( adr len taddr -- )
\G Produce a symbol table (an optional symbol address
\G map) if wanted
    [ [IFDEF] fd-symbol-table ]
      base @ swap hex s>d <# 8 0 DO # LOOP #> fd-symbol-table write-file throw base !
      s" :" fd-symbol-table write-file throw
      fd-symbol-table write-line throw
    [ [ELSE] ]
      2drop drop
    [ [THEN] ] ;


jwilke's avatar
jwilke committed
334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448
\ \ --------------------	source file

decimal

Variable cross-file-list
0 cross-file-list !
Variable target-file-list
0 target-file-list !
Variable host-file-list
0 host-file-list !

cross-file-list Value file-list
0 Value source-desc

\ file loading

: >fl-id   1 cells + ;
: >fl-name 2 cells + ;

Variable filelist 0 filelist !
Create NoFile ," #load-file#"

: loadfile ( -- adr )
  source-desc ?dup IF >fl-name ELSE NoFile THEN ;

: sourcefilename ( -- adr len ) 
  loadfile count ;

\ANSI : sourceline# 0 ;

\ \ --------------------	path handling from kernel/paths.fs

\ paths.fs path file handling                                    03may97jaw

\ -Changing the search-path:
\ fpath+ <path> 	adds a directory to the searchpath
\ fpath= <path>|<path>	makes complete now searchpath
\ 			seperator is |
\ .fpath		displays the search path
\ remark I: 
\ a ./ in the beginning of filename is expanded to the directory the
\ current file comes from. ./ can also be included in the search-path!
\ ~+/ loads from the current working directory

\ remark II:
\ if there is no sufficient space for the search path increase it!


\ -Creating custom paths:

\ It is possible to use the search mechanism on yourself.

\ Make a buffer for the path:
\ create mypath	100 chars , 	\ maximum length (is checked)
\ 		0 ,		\ real len
\ 		100 chars allot \ space for path
\ use the same functions as above with:
\ mypath path+ 
\ mypath path=
\ mypath .path

\ do a open with the search path:
\ open-path-file ( adr len path -- fd adr len ior )
\ the file is opened read-only; if the file is not found an error is generated

\ questions to: wilke@jwdt.com

[IFUNDEF] +place
: +place ( adr len adr )
        2dup >r >r
        dup c@ char+ + swap move
        r> r> dup c@ rot + swap c! ;
[THEN]

[IFUNDEF] place
: place ( c-addr1 u c-addr2 )
        2dup c! char+ swap move ;
[THEN]

\ if we have path handling, use this and the setup of it
[IFUNDEF] open-fpath-file

create sourcepath 1024 chars , 0 , 1024 chars allot \ !! make this dynamic
sourcepath value fpath

: also-path ( adr len path^ -- )
  >r
  \ len check
  r@ cell+ @ over + r@ @ u> ABORT" path buffer too small!"
  \ copy into
  tuck r@ cell+ dup @ cell+ + swap cmove
  \ make delimiter
  0 r@ cell+ dup @ cell+ + 2 pick + c! 1 + r> cell+ +!
  ;

: only-path ( adr len path^ -- )
  dup 0 swap cell+ ! also-path ;

: path+ ( path-addr  "dir" -- ) \ gforth
    \G Add the directory @var{dir} to the search path @var{path-addr}.
    name rot also-path ;

: fpath+ ( "dir" ) \ gforth
    \G Add directory @var{dir} to the Forth search path.
    fpath path+ ;

: path= ( path-addr "dir1|dir2|dir3" ) \ gforth
    \G Make a complete new search path; the path separator is |.
    name 2dup bounds ?DO i c@ [char] | = IF 0 i c! THEN LOOP
    rot only-path ;

: fpath= ( "dir1|dir2|dir3" ) \ gforth
    \G Make a complete new Forth search path; the path separator is |.
    fpath path= ;

449
: path>string  cell+ dup cell+ swap @ ;
jwilke's avatar
jwilke committed
450 451 452 453 454 455 456 457

: next-path ( adr len -- adr2 len2 )
  2dup 0 scan
  dup 0= IF     2drop 0 -rot 0 -rot EXIT THEN
  >r 1+ -rot r@ 1- -rot
  r> - ;

: previous-path ( path^ -- )
458
  dup path>string
jwilke's avatar
jwilke committed
459 460 461 462
  BEGIN tuck dup WHILE repeat ;

: .path ( path-addr -- ) \ gforth
    \G Display the contents of the search path @var{path-addr}.
463
    path>string
jwilke's avatar
jwilke committed
464 465 466 467 468 469 470 471 472 473 474 475 476 477
    BEGIN next-path dup WHILE type space REPEAT 2drop 2drop ;

: .fpath ( -- ) \ gforth
    \G Display the contents of the Forth search path.
    fpath .path ;

: absolut-path? ( addr u -- flag ) \ gforth
    \G A path is absolute if it starts with a / or a ~ (~ expansion),
    \G or if it is in the form ./*, extended regexp: ^[/~]|./, or if
    \G it has a colon as second character ("C:...").  Paths simply
    \G containing a / are not absolute!
    2dup 2 u> swap 1+ c@ [char] : = and >r \ dos absoulte: c:/....
    over c@ [char] / = >r
    over c@ [char] ~ = >r
478 479
    \ 2dup S" ../" string-prefix? r> or >r \ not catered for in expandtopic
    S" ./" string-prefix?
jwilke's avatar
jwilke committed
480 481 482 483 484 485 486 487 488 489 490 491 492 493 494
    r> r> r> or or or ;

Create ofile 0 c, 255 chars allot
Create tfile 0 c, 255 chars allot

: pathsep? dup [char] / = swap [char] \ = or ;

: need/   ofile dup c@ + c@ pathsep? 0= IF s" /" ofile +place THEN ;

: extractpath ( adr len -- adr len2 )
  BEGIN dup WHILE 1-
        2dup + c@ pathsep? IF EXIT THEN
  REPEAT ;

: remove~+ ( -- )
495
    ofile count s" ~+/" string-prefix?
jwilke's avatar
jwilke committed
496 497 498 499 500 501
    IF
	ofile count 3 /string ofile place
    THEN ;

: expandtopic ( -- ) \ stack effect correct? - anton
    \ expands "./" into an absolute name
502
    ofile count s" ./" string-prefix?
jwilke's avatar
jwilke committed
503 504 505 506 507 508 509 510 511
    IF
	ofile count 1 /string tfile place
	0 ofile c! sourcefilename extractpath ofile place
	ofile c@ IF need/ THEN
	tfile count over c@ pathsep? IF 1 /string THEN
	ofile +place
    THEN ;

: compact.. ( adr len -- adr2 len2 )
pazsan's avatar
pazsan committed
512 513 514
    \ deletes phrases like "xy/.." out of our directory name 2dec97jaw
    over swap
    BEGIN  dup  WHILE
515
        dup >r '/ scan 2dup s" /../" string-prefix?
pazsan's avatar
pazsan committed
516 517 518 519 520 521 522
        IF
            dup r> - >r 4 /string over r> + 4 -
            swap 2dup + >r move dup r> over -
        ELSE
            rdrop dup 1 min /string
        THEN
    REPEAT  drop over - ;
jwilke's avatar
jwilke committed
523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547

: reworkdir ( -- )
  remove~+
  ofile count compact..
  nip ofile c! ;

: open-ofile ( -- fid ior )
    \G opens the file whose name is in ofile
    expandtopic reworkdir
    ofile count r/o open-file ;

: check-path ( adr1 len1 adr2 len2 -- fd 0 | 0 <>0 )
  0 ofile ! >r >r ofile place need/
  r> r> ofile +place
  open-ofile ;

: open-path-file ( addr1 u1 path-addr -- wfileid addr2 u2 0 | ior ) \ gforth
    \G Look in path @var{path-addr} for the file specified by @var{addr1 u1}.
    \G If found, the resulting path and an open file descriptor
    \G are returned. If the file is not found, @var{ior} is non-zero.
  >r
  2dup absolut-path?
  IF    rdrop
        ofile place open-ofile
	dup 0= IF >r ofile count r> THEN EXIT
548
  ELSE  r> path>string
jwilke's avatar
jwilke committed
549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577
        BEGIN  next-path dup
        WHILE  5 pick 5 pick check-path
        0= IF >r 2drop 2drop r> ofile count 0 EXIT ELSE drop THEN
  REPEAT
        2drop 2drop 2drop -38
  THEN ;

: open-fpath-file ( addr1 u1 -- wfileid addr2 u2 0 | ior ) \ gforth
    \G Look in the Forth search path for the file specified by @var{addr1 u1}.
    \G If found, the resulting path and an open file descriptor
    \G are returned. If the file is not found, @var{ior} is non-zero.
    fpath open-path-file ;

fpath= ~+

[THEN]

\ \ --------------------	include require			13may99jaw

>CROSS

: add-included-file ( adr len -- adr )
  dup >fl-name char+ allocate throw >r
  file-list @ r@ ! r@ file-list !
  r@ >fl-name place r> ;

: included? ( c-addr u -- f )
  file-list
  BEGIN	@ dup
578
  WHILE	>r 2dup r@ >fl-name count str=
jwilke's avatar
jwilke committed
579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616
	IF rdrop 2drop true EXIT THEN
	r>
  REPEAT
  2drop drop false ;	

false DebugFlag showincludedfiles

: included1 ( fd adr u -- )
\ include file adr u / fd
\ we don't use fd with include-file, because the forth system
\ doesn't know the name of the file to get a nice error report
  [d?] showincludedfiles
  IF	cr ." Including: " 2dup type ." ..." THEN
  rot close-file throw
  source-desc >r
  add-included-file to source-desc 
  sourcefilename
  ['] included catch
  r> to source-desc 
  throw ;

: included ( adr len -- )
	cross-file-list to file-list
	open-fpath-file throw 
        included1 ;

: required ( adr len -- )
	cross-file-list to file-list
	open-fpath-file throw \ 2dup cr ." R:" type
	2dup included?
	IF 	2drop close-file throw
	ELSE	included1
	THEN ;

: include bl word count included ;

: require bl word count required ;

jwilke's avatar
jwilke committed
617 618
0 [IF]

jwilke's avatar
jwilke committed
619 620 621 622 623 624 625 626 627 628
also forth definitions previous

: included ( adr len -- ) included ;

: required ( adr len -- ) required ;

: include include ;

: require require ;

jwilke's avatar
jwilke committed
629 630
[THEN]

jwilke's avatar
jwilke committed
631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663
>CROSS
hex

\ \ --------------------        Error Handling                  05aug97jaw

\ Flags

also forth definitions  \ these values may be predefined before
                        \ the cross-compiler is loaded

false DefaultValue stack-warn   	 \ check on empty stack at any definition
false DefaultValue create-forward-warn   \ warn on forward declaration of created words

previous >CROSS

: .dec
  base @ decimal swap . base ! ;

: .sourcepos
  cr sourcefilename type ." :"
  sourceline# .dec ;

: warnhead
\G display error-message head
\G perhaps with linenumber and filename
  .sourcepos ." Warning: " ;

: empty? depth IF .sourcepos ." Stack not empty!"  THEN ;

stack-warn [IF]
: defempty? empty? ;
[ELSE]
: defempty? ; immediate
664
\ : defempty? .sourcepos ; 
jwilke's avatar
jwilke committed
665 666
[THEN]

667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721
\ \ --------------------        Compiler Plug Ins               01aug97jaw

>CROSS

\ Compiler States

Variable comp-state
0 Constant interpreting
1 Constant compiling
2 Constant resolving
3 Constant assembling

: compiling? comp-state @ compiling = ;

: pi-undefined -1 ABORT" Plugin undefined" ;

: Plugin ( -- : pluginname )
  Create 
  \ for normal cross-compiling only one action
  \ exists, this fields are identical. For the instant
  \ simulation environment we need, two actions for each plugin
  \ the target one and the one that generates the simulation code
  ['] pi-undefined , \ action
  ['] pi-undefined , \ target plugin action
  8765 ,     \ plugin magic
  DOES> perform ;

Plugin DummyPlugin

: 'PI ( -- addr : pluginname )
  ' >body dup 2 cells + @ 8765 <> ABORT" not a plugin" ;

: plugin-of ( xt -- : pluginname )
  dup 'PI 2! ;

: action-of ( xt -- : plunginname )
  'PI cell+ ! ;

: TPA ( -- : plugin )
\ target plugin action
\ executes current target action of plugin
  'PI cell+ POSTPONE literal POSTPONE perform ; immediate

Variable ppi-temp 0 ppi-temp !

: pa:
\g define plugin action
  ppi-temp @ ABORT" pa: definition not closed"
  'PI ppi-temp ! :noname ;

: ;pa
\g end a definition for plugin action
  POSTPONE ; ppi-temp @ ! 0 ppi-temp ! ; immediate


jwilke's avatar
jwilke committed
722
Plugin dlit, ( d -- )			\ compile numerical value the target
723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769
Plugin lit, ( n -- )
Plugin alit, ( n -- )

Plugin branch, ( target-addr -- )	\ compiles a branch
Plugin ?branch, ( target-addr -- )	\ compiles a ?branch
Plugin branchmark, ( -- branch-addr )	\ reserves room for a branch
Plugin ?branchmark, ( -- branch-addr )	\ reserves room for a ?branch
Plugin ?domark, ( -- branch-addr )	\ reserves room for a ?do branch
Plugin branchto, ( -- )			\ actual program position is target of a branch (do e.g. alignment)
' NOOP plugin-of branchto, 
Plugin branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
Plugin branchtomark, ( -- target-addr )	\ marks a branch destination

Plugin colon, ( tcfa -- )		\ compiles call to tcfa at current position
Plugin prim, ( tcfa -- )		\ compiles primitive invocation
Plugin colonmark, ( -- addr )		\ marks a colon call
Plugin colon-resolve ( tcfa addr -- )

Plugin addr-resolve ( target-addr addr -- )
Plugin doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )

Plugin ncontrols? ( [ xn ... x1 ] n -- ) \ checks wheter n control structures are open
Plugin if, 	( -- if-token )
Plugin else,	( if-token -- if-token )
Plugin then,	( if-token -- )
Plugin ahead,
Plugin begin,
Plugin while,
Plugin until,
Plugin again,
Plugin repeat,
Plugin cs-swap	( x1 x2 -- x2 x1 )

Plugin case,	( -- n )
Plugin of,	( n -- x1 n )
Plugin endof,	( x1 n -- x2 n )
Plugin endcase,	( x1 .. xn n -- )

Plugin do,	( -- do-token )
Plugin ?do,	( -- ?do-token )
Plugin for,	( -- for-token )
Plugin loop,	( do-token / ?do-token -- )
Plugin +loop,	( do-token / ?do-token -- )
Plugin next,	( for-token )
Plugin leave,	( -- )
Plugin ?leave, 	( -- )

jwilke's avatar
jwilke committed
770 771 772 773 774 775 776 777
Plugin ca>native  \ Convert a code address to the processors
                  \ native address. This is used in doprim, and
                  \ code/code: primitive definitions word to
                  \ convert the addresses.
                  \ The only target where we need this is the misc
                  \ which is a 16 Bit processor with word addresses
                  \ but the forth system we build has a normal byte
                  \ addressed memory model    
778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802

Plugin doprim,	\ compiles start of a primitive
Plugin docol,   	\ compiles start of a colon definition
Plugin doer,		
Plugin fini,      \ compiles end of definition ;s
Plugin doeshandler,
Plugin dodoes,

Plugin colon-start
' noop plugin-of colon-start
Plugin colon-end
' noop plugin-of colon-end

Plugin ]comp     \ starts compilation
' noop plugin-of ]comp
Plugin comp[     \ ends compilation
' noop plugin-of comp[

Plugin t>body             \ we need the system >body
			\ and the target >body

>TARGET
: >body t>body ;


803
\ Ghost Builder                                        06oct92py
jwilke's avatar
jwilke committed
804

805
>CROSS
806
hex
807
\ Values for ghost magic
808 809 810
4711 Constant <fwd>             4712 Constant <res>
4713 Constant <imm>             4714 Constant <do:>
4715 Constant <skip>
jwilke's avatar
jwilke committed
811

812
\ Bitmask for ghost flags
813
1 Constant <unique>
814 815 816 817 818 819 820 821 822 823 824 825
2 Constant <primitive>

\ FXIME: move this to general stuff?
: set-flag ( addr flag -- )
  over @ or swap ! ;

: reset-flag ( addr flag -- )
  invert over @ and swap ! ;

: get-flag ( addr flag -- f )
  swap @ and 0<> ;
  
jwilke's avatar
jwilke committed
826

827
Struct
jwilke's avatar
jwilke committed
828

829 830
  \ link to next ghost (always the first element)
  cell% field >next-ghost
jwilke's avatar
jwilke committed
831

832 833 834 835 836 837
  \ type of ghost
  cell% field >magic
		
  \ pointer where ghost is in target, or if unresolved
  \ points to the where we have to resolve (linked-list)
  cell% field >link
jwilke's avatar
jwilke committed
838

jwilke's avatar
jwilke committed
839
  \ execution semantics (while target compiling) of ghost
840
  cell% field >exec
jwilke's avatar
jwilke committed
841

jwilke's avatar
jwilke committed
842 843 844 845
  \ compilation action of this ghost; this is what is
  \ done to compile a call (or whatever) to this definition.
  \ E.g. >comp contains the semantic of postpone s"
  \ whereas >exec-compile contains the semantic of s"
846 847
  cell% field >comp

jwilke's avatar
jwilke committed
848 849 850 851 852
  \ Compilation sematics (while parsing) of this ghost. E.g. 
  \ "\" will skip the rest of line.
  \ These semantics are defined by Cond: and
  \ if a word is made immediate in instant, then the >exec2 field
  \ gets copied to here
853
  cell% field >exec-compile
jwilke's avatar
jwilke committed
854

jwilke's avatar
jwilke committed
855 856 857
  \ Additional execution semantics of this ghost. This is used
  \ for code generated by instant and for the doer-xt of created
  \ words
858 859 860
  cell% field >exec2

  cell% field >created
jwilke's avatar
jwilke committed
861

862 863
  \ the xt of the created ghost word itself
  cell% field >ghost-xt
jwilke's avatar
jwilke committed
864

865 866 867
  \ pointer to the counted string of the assiciated
  \ assembler label
  cell% field >asm-name
868

869 870 871 872 873 874 875 876
  \ mapped primitives have a special address, so
  \ we are able to detect them
  cell% field >asm-dummyaddr
			
  \ for builder (create, variable...) words
  \ the execution symantics of words built are placed here
  \ this is a doer ghost or a dummy ghost
  cell% field >do:ghost
877

878
  cell% field >ghost-flags
jwilke's avatar
jwilke committed
879

880 881 882 883 884 885
  cell% field >ghost-name

End-Struct ghost-struct

Variable ghost-list
0 ghost-list !
jwilke's avatar
jwilke committed
886 887

Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
888
\ Variable last-ghost	\ last ghost that is created
jwilke's avatar
jwilke committed
889 890
Variable last-header-ghost \ last ghost definitions with header

891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914
\ space for ghosts resolve structure
\ we create ghosts in a sepearte space
\ and not to the current host dp, because this
\ gives trouble with instant while compiling and creating
\ a ghost for a forward reference
\ BTW: we cannot allocate another memory region
\ because allot will check the overflow!!
Variable cross-space-dp
Create cross-space 250000 allot here 100 allot align 
Constant cross-space-end
cross-space cross-space-dp !
Variable cross-space-dp-orig

: cross-space-used cross-space-dp @ cross-space - ;

: >space ( -- )
  dp @ cross-space-dp-orig !
  cross-space-dp @ dp ! ;

: space> ( -- )
  dp @ dup cross-space-dp !
  cross-space-end u> ABORT" CROSS: cross-space overflow"
  cross-space-dp-orig @ dp ! ;

jwilke's avatar
jwilke committed
915
\ this is just for debugging, to see this in the backtrace
916 917 918 919 920 921 922 923 924 925 926
: execute-exec execute ;
: execute-exec2 execute ;
: execute-exec-compile execute ;

: NoExec
  executed-ghost @ >exec2 @
  ?dup 
  IF   execute-exec2
  ELSE true ABORT" CROSS: Don't execute ghost, or immediate target word"
  THEN ;

927 928
Defer is-forward

929
: (ghostheader) ( -- )
jwilke's avatar
jwilke committed
930
    ghost-list linked <fwd> , 0 , ['] NoExec , ['] is-forward ,
931
    0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , ;
932 933 934 935 936 937 938 939

: ghostheader ( -- ) (ghostheader) 0 , ;

' Ghosts >wordlist Constant ghosts-wordlist

\ the current wordlist for ghost definitions in the host
ghosts-wordlist Value current-ghosts

jwilke's avatar
jwilke committed
940
: Make-Ghost ( "name" -- ghost )
941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959
  >space
  \ save current and create in ghost vocabulary
  get-current >r current-ghosts set-current
  >in @ Create >in !
  \ some forth systems like iForth need the immediate directly
  \ after the word is created
  \ restore current
  r> set-current
  here (ghostheader)
  bl word count string, align
  space>
  \ set ghost-xt field by doing a search
  dup >ghost-name count 
  current-ghosts search-wordlist
  0= ABORT" CROSS: Just created, must be there!"
  over >ghost-xt !
  DOES> 
      dup executed-ghost !
      >exec @ execute-exec ;
jwilke's avatar
jwilke committed
960 961 962 963

\ ghost words                                          14oct92py
\                                          changed:    10may93py/jaw

964 965 966 967 968 969 970 971 972 973 974 975
Defer search-ghosts

: (search-ghosts) ( adr len -- cfa true | 0 )
  current-ghosts search-wordlist ; 

  ' (search-ghosts) IS search-ghosts

: gsearch ( addr len -- ghost true | 0 )
  search-ghosts
  dup IF swap >body swap THEN ;

: gfind   ( string -- ghost true / string false )
jwilke's avatar
jwilke committed
976
\ searches for string in word-list ghosts
977 978 979
  \ dup count type space
  dup >r count gsearch
  dup IF rdrop ELSE r> swap THEN ;
jwilke's avatar
jwilke committed
980 981

: gdiscover ( xt -- ghost true | xt false )
982
  >r ghost-list
jwilke's avatar
jwilke committed
983
  BEGIN @ dup
984 985 986 987
  WHILE dup >magic @ <fwd> <>
        IF dup >link @ r@ =
           IF rdrop true EXIT THEN
        THEN
jwilke's avatar
jwilke committed
988
  REPEAT
989
  drop r> false ;
jwilke's avatar
jwilke committed
990

991 992 993
: xt>ghost ( xt -- ghost )
  gdiscover 0= ABORT" CROSS: ghost not found for this xt" ;

994 995
: Ghost   ( "name" -- ghost )
  >in @ bl word gfind IF  nip EXIT  THEN
jwilke's avatar
jwilke committed
996 997 998
  drop  >in !  Make-Ghost ;

: >ghostname ( ghost -- adr len )
999
  >ghost-name count ;
jwilke's avatar
jwilke committed
1000 1001 1002 1003

: forward? ( ghost -- flag )
  >magic @ <fwd> = ;

1004 1005 1006
: undefined? ( ghost -- flag )
  >magic @ dup <fwd> = swap <skip> = or ;

1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043
: immediate? ( ghost -- flag )
  >magic @ <imm> = ;

Variable TWarnings
TWarnings on
Variable Exists-Warnings
Exists-Warnings on

: exists-warning ( ghost -- ghost )
  TWarnings @ Exists-Warnings @ and
  IF dup >ghostname warnhead type ."  exists " THEN ;

\ : HeaderGhost Ghost ;

Variable reuse-ghosts reuse-ghosts off

: HeaderGhost ( "name" -- ghost )
  >in @ 
  bl word count 
\  2dup type space
  current-ghosts search-wordlist
  IF  >body dup undefined? reuse-ghosts @ or
      IF   nip EXIT
      ELSE exists-warning 
      THEN
      drop >in ! 
  ELSE >in ! 
  THEN 
  \ we keep the execution semantics of the prviously
  \ defined words, this is a workaround
  \ for the redefined \ until vocs work
  Make-Ghost ;
 
: .ghost ( ghost -- ) >ghostname type ;

\ ' >ghostname ALIAS @name

1044 1045 1046
: findghost ( "ghostname" -- ghost ) 
  bl word gfind 0= ABORT" CROSS: Ghost don't exists" ;

1047 1048
: [G'] ( -- ghost : name )
\G ticks a ghost and returns its address
1049 1050
  findghost
  state @ IF postpone literal THEN ; immediate
1051

1052 1053
: g>xt ( ghost -- xt )
\G Returns the xt (cfa) of a ghost. Issues a warning if undefined.
1054 1055
  dup undefined? ABORT" CROSS: forward " >link @ ;
   
1056 1057 1058 1059 1060
: g>body ( ghost -- body )
\G Returns the body-address (pfa) of a ghost. 
\G Issues a warning if undefined (a forward-reference).
  g>xt X >body ;

1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080
1 Constant <label>

Struct
  \ bitmask of address type (not used for now)
  cell% field addr-type
  \ if this address is an xt, this field points to the ghost
  cell% field addr-xt-ghost
  \ a bit mask that tells as what part of the cell
  \ is refenced from an address pointer, used for assembler generation
  cell% field addr-refs
End-Struct addr-struct

: %allocerase ( align size -- addr )
  dup >r %alloc dup r> erase ;

\ returns the addr struct, define it if 0 reference
: define-addr-struct ( addr -- struct-addr )
  dup @ ?dup IF nip EXIT THEN
  addr-struct %allocerase tuck swap ! ;

1081 1082
>cross

jwilke's avatar
jwilke committed
1083 1084
\ Predefined ghosts                                    12dec92py

jwilke's avatar
jwilke committed
1085 1086
Ghost - drop \ need a ghost otherwise "-" would be treated as a number

1087 1088 1089
Ghost 0=                                        drop
Ghost branch    Ghost ?branch                   2drop
Ghost unloop    Ghost ;S                        2drop
1090 1091
Ghost lit       Ghost !                         2drop
Ghost noop                                      drop
1092 1093 1094
Ghost over      Ghost =         Ghost drop      2drop drop
Ghost 2drop drop
Ghost 2dup drop
1095 1096 1097 1098 1099 1100 1101
Ghost call drop
Ghost @ drop
Ghost useraddr drop
Ghost execute drop
Ghost + drop
Ghost decimal drop
Ghost hex drop
1102 1103 1104 1105
Ghost lit@ drop
Ghost lit-perform drop
Ghost lit+ drop
Ghost does-exec drop
jwilke's avatar
jwilke committed
1106

pazsan's avatar
pazsan committed
1107 1108 1109
Ghost :docol    Ghost :doesjump Ghost :dodoes   2drop drop
Ghost :dovar					drop

jwilke's avatar
jwilke committed
1110 1111
\ \ Parameter for target systems                         06oct92py

1112

jwilke's avatar
jwilke committed
1113 1114 1115
\ we define it ans like...
wordlist Constant target-environment

1116 1117
\ save information of current dictionary to restore with environ>
Variable env-current 
jwilke's avatar
jwilke committed
1118 1119 1120 1121 1122 1123

: >ENVIRON get-current env-current ! target-environment set-current ;
: ENVIRON> env-current @ set-current ; 

>TARGET

1124 1125 1126 1127 1128
: environment? ( addr len -- [ x ] true | false )
\G returns the content of environment variable and true or
\G false if not present
   target-environment search-wordlist 
   IF EXECUTE true ELSE false THEN ;
jwilke's avatar
jwilke committed
1129

1130 1131 1132 1133
: $has? ( addr len -- x | false )
\G returns the content of environment variable 
\G or false if not present
   T environment? H dup IF drop THEN ;
jwilke's avatar
jwilke committed
1134

1135 1136 1137 1138 1139 1140 1141 1142 1143 1144
: e? ( "name" -- x )
\G returns the content of environment variable. 
\G The variable is expected to exist. If not, issue an error.
   bl word count T environment? H 
   0= ABORT" environment variable not defined!" ;

: has? ( "name" --- x | false )
\G returns the content of environment variable 
\G or false if not present
   bl word count T $has? H ;
jwilke's avatar
jwilke committed
1145 1146


pazsan's avatar
pazsan committed
1147 1148
>ENVIRON get-order get-current swap 1+ set-order
true SetValue compiler
1149
true SetValue cross
pazsan's avatar
pazsan committed
1150 1151
true SetValue standard-threading
>TARGET previous
jwilke's avatar
jwilke committed
1152

jwilke's avatar
jwilke committed
1153
0
1154 1155 1156
[IFDEF] mach-file drop mach-file count 1 [THEN]
[IFDEF] machine-file drop machine-file 1 [THEN]
[IF] 	included hex
jwilke's avatar
jwilke committed
1157 1158
[ELSE]  cr ." No machine description!" ABORT 
[THEN]
jwilke's avatar
jwilke committed
1159

jwilke's avatar
jwilke committed
1160 1161
>ENVIRON

pazsan's avatar
pazsan committed
1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173
T has? ec H
[IF]
false DefaultValue relocate
false DefaultValue file
false DefaultValue OS
false DefaultValue prims
false DefaultValue floating
false DefaultValue glocals
false DefaultValue dcomps
false DefaultValue hash
false DefaultValue xconds
false DefaultValue header
1174 1175 1176
false DefaultValue backtrace
false DefaultValue new-input
false DefaultValue peephole
pazsan's avatar
pazsan committed
1177
false DefaultValue primcentric
1178
false DefaultValue abranch
1179
true DefaultValue f83headerstring
pazsan's avatar
pazsan committed
1180
true DefaultValue control-rack
pazsan's avatar
pazsan committed
1181 1182
[THEN]

1183
true DefaultValue gforthcross
pazsan's avatar
pazsan committed
1184 1185 1186
true DefaultValue interpreter
true DefaultValue ITC
false DefaultValue rom
pazsan's avatar
pazsan committed
1187
false DefaultValue flash
jwilke's avatar
jwilke committed
1188
true DefaultValue standardthreading
jwilke's avatar
jwilke committed
1189

1190 1191 1192 1193 1194
\ ANSForth environment  stuff
8 DefaultValue ADDRESS-UNIT-BITS
255 DefaultValue MAX-CHAR
255 DefaultValue /COUNTED-STRING

jwilke's avatar
jwilke committed
1195 1196
>TARGET
s" relocate" T environment? H 
1197 1198
\ JAW why set NIL to this?!
[IF]	drop \ SetValue NIL
1199
[ELSE]	>ENVIRON X NIL SetValue relocate
jwilke's avatar
jwilke committed
1200
[THEN]
1201 1202 1203
>TARGET

0 Constant NIL
pazsan's avatar
pazsan committed
1204 1205 1206

>CROSS

jwilke's avatar
jwilke committed
1207
\ \ Create additional parameters                         19jan95py
pazsan's avatar
pazsan committed
1208

1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225
\ currently cross only works for host machines with address-unit-bits
\ eual to 8 because of s! and sc!
\ but I start to query the environment just to modularize a little bit

: check-address-unit-bits ( -- )	
\	s" ADDRESS-UNIT-BITS" environment?
\	IF 8 <> ELSE true THEN
\	ABORT" ADDRESS-UNIT-BITS unknown or not equal to 8!"

\	shit, this doesn't work because environment? is only defined for 
\	gforth.fi and not kernl???.fi
	;

check-address-unit-bits
8 Constant bits/byte	\ we define: byte is address-unit

1 bits/byte lshift Constant maxbyte 
jwilke's avatar
jwilke committed
1226
\ this sets byte size for the target machine, (probably right guess) jaw
jwilke's avatar
jwilke committed
1227

pazsan's avatar
pazsan committed
1228
T
1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242
NIL		   	Constant TNIL
cell               	Constant tcell
cell<<             	Constant tcell<<
cell>bit           	Constant tcell>bit
bits/char          	Constant tbits/char
bits/char H bits/byte T /      
			Constant tchar
float             	Constant tfloat
1 bits/char lshift 	Constant tmaxchar
[IFUNDEF] bits/byte
8			Constant tbits/byte
[ELSE]
bits/byte		Constant tbits/byte
[THEN]
pazsan's avatar
pazsan committed
1243
H
1244
tbits/char bits/byte /	Constant tbyte
1245

1246 1247 1248
: >signed ( u -- n )
    1 tbits/char tcell * 1- lshift 2dup and
    IF  negate or  ELSE  drop  THEN ;
pazsan's avatar
pazsan committed
1249

anton's avatar
anton committed
1250 1251
\ Variables                                            06oct92py

1252 1253
Variable (tlast)    
(tlast) Value tlast TNIL tlast !  \ Last name field
anton's avatar
anton committed
1254 1255
Variable tlastcfa \ Last code field

jwilke's avatar
jwilke committed
1256 1257 1258 1259 1260
\ statistics						10jun97jaw

Variable headers-named 0 headers-named !
Variable user-vars 0 user-vars !

jwilke's avatar
jwilke committed
1261 1262 1263
: target>bitmask-size ( u1 -- u2 )
  1- tcell>bit rshift 1+ ;

1264
: allocatetarget ( size -- adr )
jwilke's avatar
jwilke committed
1265 1266
  dup allocate ABORT" CROSS: No memory for target"
  swap over swap erase ;
jwilke's avatar
jwilke committed
1267

pazsan's avatar
pazsan committed
1268
\ \ memregion.fs
jwilke's avatar
jwilke committed
1269 1270 1271 1272 1273 1274 1275


Variable last-defined-region    \ pointer to last defined region
Variable region-link            \ linked list with all regions
Variable mirrored-link          \ linked list for mirrored regions
0 dup mirrored-link ! region-link !

1276 1277
: >rname 9 cells + ;
: >rtouch 8 cells + ; \ executed when region is accessed
1278
: >rbm   4 cells + ; \ bitfield per cell witch indicates relocation
1279
: >rmem  5 cells + ;
1280 1281
: >rtype 6 cells + ; \ field per cell witch points to a type struct
: >rrom 7 cells + ;  \ a -1 indicates that this region is rom
jwilke's avatar
jwilke committed
1282
: >rlink 3 cells + ;
jwilke's avatar
jwilke committed
1283 1284 1285 1286
: >rdp 2 cells + ;
: >rlen cell+ ;
: >rstart ;

1287 1288 1289 1290
: (region) ( addr len region -- )
\G change startaddress and length of an existing region
  >r r@ last-defined-region !
  r@ >rlen ! dup r@ >rstart ! r> >rdp ! ;
jwilke's avatar
jwilke committed
1291

1292 1293
: uninitialized -1 ABORT" CROSS: Region is uninitialized" ;

jwilke's avatar
jwilke committed
1294
: region ( addr len -- "name" )                
1295
\G create a new region
jwilke's avatar
jwilke committed
1296 1297 1298 1299 1300 1301 1302
  \ check whether predefined region exists 
  save-input bl word find >r >r restore-input throw r> r> 0= 
  IF	\ make region
	drop
	save-input create restore-input throw
	here last-defined-region !
	over ( startaddr ) , ( length ) , ( dp ) ,
1303 1304 1305
	region-link linked 0 , 0 , 0 , 0 , 
        ['] uninitialized ,
        bl word count string,
jwilke's avatar
jwilke committed
1306 1307
  ELSE	\ store new parameters in region
        bl word drop
1308
	>body (region)
jwilke's avatar
jwilke committed
1309 1310
  THEN ;

1311 1312
: borders ( region -- startaddr endaddr ) 
\G returns lower and upper region border
jwilke's avatar
jwilke committed
1313
  dup >rstart @ swap >rlen @ over + ;
jwilke's avatar
jwilke committed
1314

1315 1316
: extent  ( region -- startaddr len )   
\G returns the really used area
jwilke's avatar
jwilke committed
1317
  dup >rstart @ swap >rdp @ over - ;
jwilke's avatar
jwilke committed
1318

1319 1320
: area ( region -- startaddr totallen ) 
\G returns the total area
1321
  dup >rstart @ swap >rlen @ ;
jwilke's avatar
jwilke committed
1322

1323 1324 1325
: dp@ ( region -- dp )
  >rdp @ ;

1326 1327
: mirrored ( -- )                              
\G mark last defined region as mirrored
jwilke's avatar
jwilke committed
1328
  mirrored-link
jwilke's avatar
jwilke committed
1329
  align linked last-defined-region @ , ;
jwilke's avatar
jwilke committed
1330

1331 1332 1333 1334
: writeprotected
\G mark a region as write protected
  -1 last-defined-region @ >rrom ! ;

jwilke's avatar
jwilke committed
1335 1336
: .addr ( u -- )
\G prints a 16 or 32 Bit nice hex value
jwilke's avatar
jwilke committed
1337 1338
  base @ >r hex
  tcell 2 u>
jwilke's avatar
jwilke committed
1339
  IF s>d <# # # # # [char] . hold # # # # #> type
jwilke's avatar
jwilke committed
1340
  ELSE s>d <# # # # # # #> type
1341
  THEN r> base ! space ;
jwilke's avatar
jwilke committed
1342 1343 1344 1345 1346 1347 1348 1349

: .regions                      \G display region statistic

  \ we want to list the regions in the right order
  \ so first collect all regions on stack
  0 region-link @
  BEGIN dup WHILE dup @ REPEAT drop
  BEGIN dup
jwilke's avatar
jwilke committed
1350 1351 1352
  WHILE cr
        0 >rlink - >r
        r@ >rname count tuck type
jwilke's avatar
jwilke committed
1353
        12 swap - 0 max spaces space
jwilke's avatar
jwilke committed
1354 1355 1356
        ." Start: " r@ >rstart @ dup .addr space
        ." End: " r@ >rlen @ + .addr space
        ." DP: " r> >rdp @ .addr
jwilke's avatar
jwilke committed
1357
  REPEAT drop
jwilke's avatar
jwilke committed
1358
  s" rom" T $has? H 0= ?EXIT
jwilke's avatar
jwilke committed
1359 1360 1361
  cr ." Mirrored:"
  mirrored-link @
  BEGIN dup
jwilke's avatar
jwilke committed
1362
  WHILE space dup cell+ @ >rname count type @
jwilke's avatar
jwilke committed
1363 1364 1365 1366 1367 1368 1369 1370
  REPEAT drop cr
  ;

\ -------- predefined regions

0 0 region address-space
\ total memory addressed and used by the target system

1371 1372 1373 1374
0 0 region user-region
\ data for user variables goes here
\ this has to be defined before dictionary or ram-dictionary

jwilke's avatar
jwilke committed
1375 1376 1377
0 0 region dictionary
\ rom area for the compiler

jwilke's avatar
jwilke committed
1378
T has? rom H
jwilke's avatar
jwilke committed
1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393
[IF]
0 0 region ram-dictionary mirrored
\ ram area for the compiler
[ELSE]
' dictionary ALIAS ram-dictionary
[THEN]

0 0 region return-stack

0 0 region data-stack

0 0 region tib-region

' dictionary ALIAS rom-dictionary

1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408
: setup-region ( region -- )
  >r
  \ allocate mem
  r@ >rlen @ allocatetarget
  r@ >rmem !

  r@ >rlen @
  target>bitmask-size allocatetarget
  r@ >rbm !

  r@ >rlen @
  tcell / 1+ cells allocatetarget r@ >rtype !

  ['] noop r@ >rtouch !
  rdrop ;
jwilke's avatar
jwilke committed
1409

1410
: setup-target ( -- )   \G initialize target's memory space
jwilke's avatar
jwilke committed
1411
  s" rom" T $has? H
jwilke's avatar
jwilke committed
1412
  IF  \ check for ram and rom...
1413
      \ address-space area nip 0<>
jwilke's avatar
jwilke committed
1414 1415
      ram-dictionary area nip 0<>
      rom-dictionary area nip 0<>
1416
      and 0=
jwilke's avatar
jwilke committed
1417 1418 1419 1420 1421 1422 1423 1424
      ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
  THEN
  address-space area nip
  IF
      address-space area
  ELSE
      dictionary area
  THEN
jwilke's avatar
jwilke committed
1425
  nip 0=
jwilke's avatar
jwilke committed
1426
  ABORT" CROSS: define at least address-space or dictionary!!"
jwilke's avatar
jwilke committed
1427 1428 1429 1430 1431 1432 1433

  \ allocate target for each region
  region-link
  BEGIN @ dup
  WHILE dup
        0 >rlink - >r
        r@ >rlen @
1434 1435
        IF      r@ setup-region
        THEN    rdrop
1436 1437
   REPEAT drop ;

1438
\ MakeKernel                                           		22feb99jaw
1439

1440
: makekernel ( start targetsize -- )
1441 1442
\G convenience word to setup the memory of the target
\G used by main.fs of the c-engine based systems
1443
  dictionary (region) setup-target ;
1444 1445 1446 1447

>MINIMAL
: makekernel makekernel ;
>CROSS
jwilke's avatar
jwilke committed
1448

pazsan's avatar
pazsan committed
1449
\ \ switched tdp for rom support				03jun97jaw
jwilke's avatar
jwilke committed
1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467

\ second value is here to store some maximal value for statistics
\ tempdp is also embedded here but has nothing to do with rom support
\ (needs switched dp)

variable tempdp	0 ,	\ temporary dp for resolving
variable tempdp-save

0 [IF]
variable romdp 0 ,      \ Dictionary-Pointer for ramarea
variable ramdp 0 ,      \ Dictionary-Pointer for romarea

\
variable sramdp		\ start of ram-area for forth
variable sromdp		\ start of rom-area for forth

[THEN]

jwilke's avatar
jwilke committed
1468 1469 1470
0 Value current-region
0 Value tdp
Variable fixed		\ flag: true: no automatic switching
jwilke's avatar
jwilke committed
1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482
			\	false: switching is done automatically

\ Switch-Policy:
\
\ a header is always compiled into rom
\ after a created word (create and variable) compilation goes to ram
\
\ Be careful: If you want to make the data behind create into rom
\ you have to put >rom before create!

variable constflag constflag off

jwilke's avatar
jwilke committed
1483 1484
: activate ( region -- )
\G next code goes to this region
jwilke's avatar
jwilke committed
1485
  dup to current-region >rdp to tdp ;
jwilke's avatar
jwilke committed
1486

jwilke's avatar
jwilke committed
1487
: (switchram)
jwilke's avatar
jwilke committed
1488
  fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
jwilke's avatar
jwilke committed
1489
  ram-dictionary activate ;
jwilke's avatar
jwilke committed
1490 1491 1492 1493 1494 1495

: switchram
  constflag @
  IF constflag off ELSE (switchram) THEN ;

: switchrom
jwilke's avatar
jwilke committed
1496
  fixed @ ?EXIT rom-dictionary activate ;
jwilke's avatar
jwilke committed
1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511

: >tempdp ( addr -- ) 
  tdp tempdp-save ! tempdp to tdp tdp ! ;
: tempdp> ( -- )
  tempdp-save @ to tdp ;

: >ram  fixed off (switchram) fixed on ;
: >rom  fixed off switchrom fixed on ;
: >auto fixed off switchrom ;



\ : romstart dup sromdp ! romdp ! ;
\ : ramstart dup sramdp ! ramdp ! ;

jwilke's avatar
jwilke committed
1512
\ default compilation goes to rom
jwilke's avatar
jwilke committed
1513 1514 1515 1516
\ when romable support is off, only the rom switch is used (!!)
>auto

: there  tdp @ ;
anton's avatar
anton committed
1517

anton's avatar
anton committed
1518 1519
>TARGET

jwilke's avatar
jwilke committed
1520 1521
\ \ Target Memory Handling

anton's avatar
anton committed
1522 1523
\ Byte ordering and cell size                          06oct92py

pazsan's avatar
pazsan committed
1524 1525
: cell+         tcell + ;
: cells         tcell<< lshift ;
1526 1527
: chars         tchar * ;
: char+		tchar + ;
pazsan's avatar
pazsan committed
1528
: floats	tfloat * ;
1529
    
anton's avatar
anton committed
1530
>CROSS
pazsan's avatar
pazsan committed
1531
: cell/         tcell<< rshift ;
anton's avatar
anton committed
1532 1533
>TARGET
20 CONSTANT bl
jwilke's avatar
jwilke committed
1534
\ TNIL Constant NIL
anton's avatar
anton committed
1535 1536 1537

>CROSS

1538 1539
bigendian
[IF]
jwilke's avatar
jwilke committed
1540
   : DS!  ( d addr -- )  tcell bounds swap 1-
1541
     DO  maxbyte ud/mod rot I c!  -1 +LOOP  2drop ;
jwilke's avatar
jwilke committed
1542 1543
   : DS@  ( addr -- d )  >r 0 0 r> tcell bounds
     DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  LOOP ;
1544 1545 1546 1547
   : Sc!  ( n addr -- )  >r s>d r> tchar bounds swap 1-
     DO  maxbyte ud/mod rot I c!  -1 +LOOP  2drop ;
   : Sc@  ( addr -- n )  >r 0 0 r> tchar bounds
     DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  LOOP d>s ;
pazsan's avatar
pazsan committed
1548
[ELSE]
jwilke's avatar
jwilke committed
1549
   : DS!  ( d addr -- )  tcell bounds
1550
     DO  maxbyte ud/mod rot I c!  LOOP  2drop ;
jwilke's avatar
jwilke committed
1551 1552
   : DS@  ( addr -- n )  >r 0 0 r> tcell bounds swap 1-
     DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  -1 +LOOP ;
1553 1554 1555 1556
   : Sc!  ( n addr -- )  >r s>d r> tchar bounds
     DO  maxbyte ud/mod rot I c!  LOOP  2drop ;
   : Sc@  ( addr -- n )  >r 0 0 r> tchar bounds swap 1-
     DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  -1 +LOOP d>s ;
anton's avatar
anton committed
1557 1558
[THEN]

jwilke's avatar
jwilke committed
1559 1560 1561
: S! ( n addr -- ) >r s>d r> DS! ;
: S@ ( addr -- n ) DS@ d>s ;

jwilke's avatar
jwilke committed
1562 1563 1564 1565 1566 1567 1568 1569 1570
: taddr>region ( taddr -- region | 0 )
\G finds for a target-address the correct region
\G returns 0 if taddr is not in range of a target memory region
  region-link
  BEGIN @ dup
  WHILE dup >r
        0 >rlink - >r
        r@ >rlen @
        IF      dup r@ borders within
1571 1572 1573
                IF r> r> drop nip 
                   dup >rtouch @ EXECUTE EXIT 
                THEN
jwilke's avatar
jwilke committed
1574 1575 1576 1577 1578 1579
        THEN
        r> drop
        r>
  REPEAT
  2drop 0 ;

1580
: taddr>region-abort ( taddr -- region | 0 )
1581 1582
\G Same as taddr>region but aborts if taddr is not
\G a valid address in the target address space
1583 1584 1585 1586 1587
  dup taddr>region dup 0= 
  IF    drop cr ." Wrong address: " .addr
        -1 ABORT" Address out of range!"
  THEN nip ;

jwilke's avatar
jwilke committed
1588 1589 1590
: (>regionimage) ( taddr -- 'taddr )
  dup
  \ find region we want to address
1591
  taddr>region-abort
jwilke's avatar
jwilke committed
1592 1593 1594 1595 1596 1597
  >r
  \ calculate offset in region
  r@ >rstart @ -
  \ add regions real address in our memory
  r> >rmem @ + ;

1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609
: (>regionramimage) ( taddr -- 'taddr )
\G same as (>regionimage) but aborts if the region is rom
  dup
  \ find region we want to address
  taddr>region-abort
  >r
  r@ >rrom @ ABORT" CROSS: region is write-protected!"
  \ calculate offset in region
  r@ >rstart @ -
  \ add regions real address in our memory
  r> >rmem @ + ;

1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629
: (>regionbm) ( taddr -- 'taddr bitmaskbaseaddr )
  dup
  \ find region we want to address
  taddr>region-abort
  >r
  \ calculate offset in region
  r@ >rstart @ -
  \ add regions real address in our memory
  r> >rbm @ ;

: (>regiontype) ( taddr -- 'taddr )
  dup
  \ find region we want to address
  taddr>region-abort
  >r
  \ calculate offset in region
  r@ >rstart @ - tcell / cells
  \ add regions real address in our memory
  r> >rtype @ + ;
  
anton's avatar
anton committed
1630 1631 1632 1633 1634 1635 1636
\ Bit string manipulation                               06oct92py
\                                                       9may93jaw
CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
: bits ( n -- n ) chars Bittable + c@ ;

: >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
: +bit ( addr n -- )  >bit over c@ or swap c! ;
pazsan's avatar
pazsan committed
1637
: -bit ( addr n -- )  >bit invert over c@ and swap c! ;
jwilke's avatar
jwilke committed
1638

1639 1640
: @relbit ( taddr -- f ) (>regionbm) swap cell/ >bit swap c@ and ;

1641 1642 1643 1644 1645
: (relon) ( taddr -- )  
  [ [IFDEF] fd-relocation-table ]
  s" +" fd-relocation-table write-file throw
  dup s>d <# #s #> fd-relocation-table write-line throw
  [ [THEN] ]
1646
  (>regionbm) swap cell/ +bit ;
1647 1648 1649 1650 1651 1652

: (reloff) ( taddr -- ) 
  [ [IFDEF] fd-relocation-table ]
  s" -" fd-relocation-table write-file throw
  dup s>d <# #s #> fd-relocation-table write-line throw
  [ [THEN] ]
1653
  (>regionbm) swap cell/ -bit ;
jwilke's avatar
jwilke committed
1654 1655

DEFER >image
1656
DEFER >ramimage
jwilke's avatar
jwilke committed
1657 1658 1659 1660 1661 1662 1663 1664
DEFER relon
DEFER reloff
DEFER correcter

T has? relocate H
[IF]
' (relon) IS relon
' (reloff) IS reloff
1665
' (>regionimage) IS >image
1666
' (>regionimage) IS >ramimage
jwilke's avatar
jwilke committed
1667 1668 1669
[ELSE]
' drop IS relon
' drop IS reloff
jwilke's avatar
jwilke committed
1670
' (>regionimage) IS >image
1671
' (>regionimage) IS >ramimage
jwilke's avatar
jwilke committed
1672
[THEN]
anton's avatar
anton committed
1673

1674 1675 1676 1677 1678 1679 1680 1681 1682
: enforce-writeprotection ( -- )
  ['] (>regionramimage) IS >ramimage ;

: relax-writeprotection ( -- )
  ['] (>regionimage) IS >ramimage ;

: writeprotection-relaxed? ( -- )
  ['] >ramimage >body @ ['] (>regionimage) = ;

anton's avatar
anton committed
1683 1684 1685
\ Target memory access                                 06oct92py

: align+  ( taddr -- rest )
anton's avatar
anton committed
1686
    tcell tuck 1- and - [ tcell 1- ] Literal and ;
1687
: cfalign+  ( taddr -- rest )
pazsan's avatar
pazsan committed
1688
    \ see kernel.fs:cfaligned
pazsan's avatar
pazsan committed
1689
    /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
anton's avatar
anton committed
1690 1691 1692 1693 1694

>TARGET
: aligned ( taddr -- ta-addr )  dup align+ + ;
\ assumes cell alignment granularity (as GNU C)

1695
: cfaligned ( taddr1 -- taddr2 )
pazsan's avatar
pazsan committed
1696
    \ see kernel.fs
1697 1698
    dup cfalign+ + ;

jwilke's avatar
jwilke committed
1699
: @  ( taddr -- w )     >image S@ ;
1700
: !  ( w taddr -- )     >ramimage S! ;
1701
: c@ ( taddr -- char )  >image Sc@ ;
1702
: c! ( char taddr -- )  >ramimage Sc! ;
1703
: 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
1704
: 2! ( x1 x2 taddr -- ) T tuck ! cell+ ! H ;
anton's avatar
anton committed
1705 1706 1707 1708 1709 1710

\ Target compilation primitives                        06oct92py
\ included A!                                          16may93jaw

: here  ( -- there )    there ;
: allot ( n -- )        tdp +! ;
jwilke's avatar
jwilke committed
1711 1712 1713
: ,     ( w -- )        T here H tcell T allot  ! H ;
: c,    ( char -- )     T here H tchar T allot c! H ;
: align ( -- )          T here H align+ 0 ?DO  bl T c, H tchar +LOOP ;