cross.fs 91.2 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

4
\ Copyright (C) 1995,1996,1997,1998,1999,2000 Free Software Foundation, Inc.
anton's avatar
anton committed
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

\ 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
\ as published by the Free Software Foundation; either version 2
\ 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
\ along with this program; if not, write to the Free Software
20
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
anton's avatar
anton committed
21

jwilke's avatar
jwilke committed
22 23 24 25
0 
[IF]

ToDo:
jwilke's avatar
jwilke committed
26 27 28 29 30
- 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
- MAXU etc. can be done with dlit,
jwilke's avatar
jwilke committed
31 32

[THEN]
anton's avatar
anton committed
33

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 74 75 76 77 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
: >cross  also Cross definitions previous ;
: >target also Target definitions previous ;
: >minimal also Minimal definitions previous ;

H

>CROSS

\ 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
139 140 141 142
    over [char] ' =
    IF 	\ a ' alone is rather unusual :-)
	drop char+ c@ 0 true EXIT 
    THEN
jwilke's avatar
jwilke committed
143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203
    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
204

205 206 207 208 209 210 211
\ 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
212
hex     \ the defualt base for the cross-compiler is hex !!
jwilke's avatar
jwilke committed
213
\ Warnings off
jwilke's avatar
jwilke committed
214 215 216

\ words that are generaly useful

217
: KB  400 * ;
jwilke's avatar
jwilke committed
218 219 220 221 222
: >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
223

pazsan's avatar
pazsan committed
224 225 226
: string, ( c-addr u -- )
    \ puts down string as cstring
    dup c, here swap chars dup allot move ;
227

jwilke's avatar
jwilke committed
228 229
: ," [char] " parse string, ;

jwilke's avatar
jwilke committed
230
: SetValue ( n -- <name> )
pazsan's avatar
pazsan committed
231 232
\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
233
\G SetValue searches in the current vocabulary
jwilke's avatar
jwilke committed
234 235 236 237 238 239
  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
240
	set-order
jwilke's avatar
jwilke committed
241
  ELSE Value THEN ;
jwilke's avatar
jwilke committed
242 243

: DefaultValue ( n -- <name> )
pazsan's avatar
pazsan committed
244 245
\G Same behaviour as "Value" if the <name> is not defined
\G DefaultValue searches in the current vocabulary
jwilke's avatar
jwilke committed
246 247
 save-input bl word >r restore-input throw r> count
 get-current search-wordlist
248
 IF bl word drop 2drop ELSE Value THEN ;
anton's avatar
anton committed
249 250 251

hex

jwilke's avatar
jwilke committed
252
\ FIXME delete`
jwilke's avatar
jwilke committed
253 254 255
\ 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
256

jwilke's avatar
jwilke committed
257
\ FIXME move down
jwilke's avatar
jwilke committed
258 259 260 261 262
: comment? ( c-addr u -- c-addr u )
        2dup s" (" compare 0=
        IF    postpone (
        ELSE  2dup s" \" compare 0= IF postpone \ THEN
        THEN ;
pazsan's avatar
pazsan committed
263

jwilke's avatar
jwilke committed
264 265 266 267 268 269 270 271
: 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
272

jwilke's avatar
jwilke committed
273
\ Begin CROSS COMPILER:
anton's avatar
anton committed
274

jwilke's avatar
jwilke committed
275
\ debugging
jwilke's avatar
jwilke committed
276

jwilke's avatar
jwilke committed
277 278 279 280 281 282 283 284 285
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
286 287
>CROSS

jwilke's avatar
jwilke committed
288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316
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
317

jwilke's avatar
jwilke committed
318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495
\ \ --------------------	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= ;

: path>counted  cell+ dup cell+ swap @ ;

: 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^ -- )
  dup path>counted
  BEGIN tuck dup WHILE repeat ;

: .path ( path-addr -- ) \ gforth
    \G Display the contents of the search path @var{path-addr}.
    path>counted
    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
    \ 2dup 3 min S" ../" compare 0= r> or >r \ not catered for in expandtopic
    2 min S" ./" compare 0=
    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~+ ( -- )
    ofile count 3 min s" ~+/" compare 0=
    IF
	ofile count 3 /string ofile place
    THEN ;

: expandtopic ( -- ) \ stack effect correct? - anton
    \ expands "./" into an absolute name
    ofile count 2 min s" ./" compare 0=
    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
496 497 498 499 500 501 502 503 504 505 506
    \ deletes phrases like "xy/.." out of our directory name 2dec97jaw
    over swap
    BEGIN  dup  WHILE
        dup >r '/ scan 2dup 4 min s" /../" compare 0=
        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
507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600

: 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
  ELSE  r> path>counted
        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
  WHILE	>r 2dup r@ >fl-name count compare 0=
	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
601 602
0 [IF]

jwilke's avatar
jwilke committed
603 604 605 606 607 608 609 610 611 612
also forth definitions previous

: included ( adr len -- ) included ;

: required ( adr len -- ) required ;

: include include ;

: require require ;

jwilke's avatar
jwilke committed
613 614
[THEN]

jwilke's avatar
jwilke committed
615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649
>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
[THEN]

650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704
\ \ --------------------        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
705
Plugin dlit, ( d -- )			\ compile numerical value the target
706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752
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
753 754 755 756 757 758 759 760
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    
761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785

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 ;


786
\ Ghost Builder                                        06oct92py
jwilke's avatar
jwilke committed
787

788
>CROSS
789
hex
790
\ Values for ghost magic
791 792 793
4711 Constant <fwd>             4712 Constant <res>
4713 Constant <imm>             4714 Constant <do:>
4715 Constant <skip>
jwilke's avatar
jwilke committed
794

795
\ Bitmask for ghost flags
796
1 Constant <unique>
797 798 799 800 801 802 803 804 805 806 807 808
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
809

810
Struct
jwilke's avatar
jwilke committed
811

812 813
  \ link to next ghost (always the first element)
  cell% field >next-ghost
jwilke's avatar
jwilke committed
814

815 816 817 818 819 820
  \ 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
821

jwilke's avatar
jwilke committed
822
  \ execution semantics (while target compiling) of ghost
823
  cell% field >exec
jwilke's avatar
jwilke committed
824

jwilke's avatar
jwilke committed
825 826 827 828
  \ 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"
829 830
  cell% field >comp

jwilke's avatar
jwilke committed
831 832 833 834 835
  \ 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
836
  cell% field >exec-compile
jwilke's avatar
jwilke committed
837

jwilke's avatar
jwilke committed
838 839 840
  \ Additional execution semantics of this ghost. This is used
  \ for code generated by instant and for the doer-xt of created
  \ words
841 842 843
  cell% field >exec2

  cell% field >created
jwilke's avatar
jwilke committed
844

845 846
  \ the xt of the created ghost word itself
  cell% field >ghost-xt
jwilke's avatar
jwilke committed
847

848 849 850
  \ pointer to the counted string of the assiciated
  \ assembler label
  cell% field >asm-name
851

852 853 854 855 856 857 858 859
  \ 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
860

861
  cell% field >ghost-flags
jwilke's avatar
jwilke committed
862

863 864 865 866 867 868
  cell% field >ghost-name

End-Struct ghost-struct

Variable ghost-list
0 ghost-list !
jwilke's avatar
jwilke committed
869 870

Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
871
\ Variable last-ghost	\ last ghost that is created
jwilke's avatar
jwilke committed
872 873
Variable last-header-ghost \ last ghost definitions with header

874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897
\ 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
898
\ this is just for debugging, to see this in the backtrace
899 900 901 902 903 904 905 906 907 908 909
: 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 ;

910 911
Defer is-forward

912
: (ghostheader) ( -- )
jwilke's avatar
jwilke committed
913
    ghost-list linked <fwd> , 0 , ['] NoExec , ['] is-forward ,
914
    0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , ;
915 916 917 918 919 920 921 922

: 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
923
: Make-Ghost ( "name" -- ghost )
924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942
  >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
943 944 945 946

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

947 948 949 950 951 952 953 954 955 956 957 958
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
959
\ searches for string in word-list ghosts
960 961 962
  \ dup count type space
  dup >r count gsearch
  dup IF rdrop ELSE r> swap THEN ;
jwilke's avatar
jwilke committed
963 964

: gdiscover ( xt -- ghost true | xt false )
965
  >r ghost-list
jwilke's avatar
jwilke committed
966
  BEGIN @ dup
967 968 969 970
  WHILE dup >magic @ <fwd> <>
        IF dup >link @ r@ =
           IF rdrop true EXIT THEN
        THEN
jwilke's avatar
jwilke committed
971
  REPEAT
972
  drop r> false ;
jwilke's avatar
jwilke committed
973

974 975 976
: xt>ghost ( xt -- ghost )
  gdiscover 0= ABORT" CROSS: ghost not found for this xt" ;

977 978
: Ghost   ( "name" -- ghost )
  >in @ bl word gfind IF  nip EXIT  THEN
jwilke's avatar
jwilke committed
979 980 981
  drop  >in !  Make-Ghost ;

: >ghostname ( ghost -- adr len )
982
  >ghost-name count ;
jwilke's avatar
jwilke committed
983 984 985 986

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

987 988 989
: undefined? ( ghost -- flag )
  >magic @ dup <fwd> = swap <skip> = or ;

990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026
: 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

1027 1028 1029
: findghost ( "ghostname" -- ghost ) 
  bl word gfind 0= ABORT" CROSS: Ghost don't exists" ;

1030 1031
: [G'] ( -- ghost : name )
\G ticks a ghost and returns its address
1032 1033
  findghost
  state @ IF postpone literal THEN ; immediate
1034

1035 1036
: g>xt ( ghost -- xt )
\G Returns the xt (cfa) of a ghost. Issues a warning if undefined.
1037 1038
  dup undefined? ABORT" CROSS: forward " >link @ ;
   
1039 1040 1041 1042 1043
: 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 ;

1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063
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 ! ;

1064 1065
>cross

jwilke's avatar
jwilke committed
1066 1067
\ Predefined ghosts                                    12dec92py

jwilke's avatar
jwilke committed
1068 1069
Ghost - drop \ need a ghost otherwise "-" would be treated as a number

1070 1071 1072
Ghost 0=                                        drop
Ghost branch    Ghost ?branch                   2drop
Ghost unloop    Ghost ;S                        2drop
1073 1074
Ghost lit       Ghost !                         2drop
Ghost noop                                      drop
1075 1076 1077
Ghost over      Ghost =         Ghost drop      2drop drop
Ghost 2drop drop
Ghost 2dup drop
1078 1079 1080 1081 1082 1083 1084
Ghost call drop
Ghost @ drop
Ghost useraddr drop
Ghost execute drop
Ghost + drop
Ghost decimal drop
Ghost hex drop
1085 1086 1087 1088
Ghost lit@ drop
Ghost lit-perform drop
Ghost lit+ drop
Ghost does-exec drop
jwilke's avatar
jwilke committed
1089

pazsan's avatar
pazsan committed
1090 1091 1092
Ghost :docol    Ghost :doesjump Ghost :dodoes   2drop drop
Ghost :dovar					drop

jwilke's avatar
jwilke committed
1093 1094
\ \ Parameter for target systems                         06oct92py

1095

jwilke's avatar
jwilke committed
1096 1097 1098
\ we define it ans like...
wordlist Constant target-environment

1099 1100
\ save information of current dictionary to restore with environ>
Variable env-current 
jwilke's avatar
jwilke committed
1101 1102 1103 1104 1105 1106

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

>TARGET

1107 1108 1109 1110 1111
: 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
1112

1113 1114 1115 1116
: $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
1117

1118 1119 1120 1121 1122 1123 1124 1125 1126 1127
: 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
1128 1129


pazsan's avatar
pazsan committed
1130 1131
>ENVIRON get-order get-current swap 1+ set-order
true SetValue compiler
1132
true SetValue cross
pazsan's avatar
pazsan committed
1133 1134
true SetValue standard-threading
>TARGET previous
jwilke's avatar
jwilke committed
1135

jwilke's avatar
jwilke committed
1136
0
1137 1138 1139
[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
1140 1141
[ELSE]  cr ." No machine description!" ABORT 
[THEN]
jwilke's avatar
jwilke committed
1142

jwilke's avatar
jwilke committed
1143 1144
>ENVIRON

pazsan's avatar
pazsan committed
1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156
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
1157 1158 1159
false DefaultValue backtrace
false DefaultValue new-input
false DefaultValue peephole
pazsan's avatar
pazsan committed
1160 1161 1162 1163 1164
[THEN]

true DefaultValue interpreter
true DefaultValue ITC
false DefaultValue rom
jwilke's avatar
jwilke committed
1165
true DefaultValue standardthreading
jwilke's avatar
jwilke committed
1166

jwilke's avatar
jwilke committed
1167 1168
>TARGET
s" relocate" T environment? H 
1169 1170
\ JAW why set NIL to this?!
[IF]	drop \ SetValue NIL
1171
[ELSE]	>ENVIRON X NIL SetValue relocate
jwilke's avatar
jwilke committed
1172
[THEN]
1173 1174 1175
>TARGET

0 Constant NIL
pazsan's avatar
pazsan committed
1176 1177 1178

>CROSS

jwilke's avatar
jwilke committed
1179
\ \ Create additional parameters                         19jan95py
pazsan's avatar
pazsan committed
1180

1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197
\ 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
1198
\ this sets byte size for the target machine, (probably right guess) jaw
jwilke's avatar
jwilke committed
1199

pazsan's avatar
pazsan committed
1200
T
1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214
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
1215
H
1216
tbits/char bits/byte /	Constant tbyte
1217

pazsan's avatar
pazsan committed
1218

anton's avatar
anton committed
1219 1220 1221 1222 1223 1224 1225
\ Variables                                            06oct92py

Variable image
Variable tlast    TNIL tlast !  \ Last name field
Variable tlastcfa \ Last code field
Variable bit$

jwilke's avatar
jwilke committed
1226 1227 1228 1229 1230
\ statistics						10jun97jaw

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

jwilke's avatar
jwilke committed
1231 1232 1233
: target>bitmask-size ( u1 -- u2 )
  1- tcell>bit rshift 1+ ;

1234
: allocatetarget ( size -- adr )
jwilke's avatar
jwilke committed
1235 1236
  dup allocate ABORT" CROSS: No memory for target"
  swap over swap erase ;
jwilke's avatar
jwilke committed
1237

pazsan's avatar
pazsan committed
1238
\ \ memregion.fs
jwilke's avatar
jwilke committed
1239 1240 1241 1242 1243 1244 1245 1246


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 !


1247 1248 1249 1250
: >rname 7 cells + ;
: >rbm   4 cells + ;
: >rmem  5 cells + ;
: >rtype 6 cells + ;
jwilke's avatar
jwilke committed
1251
: >rlink 3 cells + ;
jwilke's avatar
jwilke committed
1252 1253 1254 1255
: >rdp 2 cells + ;
: >rlen cell+ ;
: >rstart ;

1256 1257 1258 1259
: (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
1260

1261 1262
: region ( addr len -- )                
\G create a new region
jwilke's avatar
jwilke committed
1263 1264 1265 1266 1267 1268 1269
  \ 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 ) ,
1270
	region-link linked 0 , 0 , 0 , bl word count string,
jwilke's avatar
jwilke committed
1271 1272
  ELSE	\ store new parameters in region
        bl word drop
1273
	>body (region)
jwilke's avatar
jwilke committed
1274 1275
  THEN ;

1276 1277
: borders ( region -- startaddr endaddr ) 
\G returns lower and upper region border
jwilke's avatar
jwilke committed
1278
  dup >rstart @ swap >rlen @ over + ;
jwilke's avatar
jwilke committed
1279

1280 1281
: extent  ( region -- startaddr len )   
\G returns the really used area
jwilke's avatar
jwilke committed
1282
  dup >rstart @ swap >rdp @ over - ;
jwilke's avatar
jwilke committed
1283

1284 1285
: area ( region -- startaddr totallen ) 
\G returns the total area
1286
  dup >rstart @ swap >rlen @ ;
jwilke's avatar
jwilke committed
1287

1288 1289
: mirrored                              
\G mark a region as mirrored
jwilke's avatar
jwilke committed
1290
  mirrored-link
jwilke's avatar
jwilke committed
1291
  align linked last-defined-region @ , ;
jwilke's avatar
jwilke committed
1292

jwilke's avatar
jwilke committed
1293 1294
: .addr ( u -- )
\G prints a 16 or 32 Bit nice hex value
jwilke's avatar
jwilke committed
1295 1296
  base @ >r hex
  tcell 2 u>
jwilke's avatar
jwilke committed
1297
  IF s>d <# # # # # [char] . hold # # # # #> type
jwilke's avatar
jwilke committed
1298
  ELSE s>d <# # # # # # #> type
1299
  THEN r> base ! space ;
jwilke's avatar
jwilke committed
1300 1301 1302 1303 1304 1305 1306 1307

: .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
1308 1309 1310
  WHILE cr
        0 >rlink - >r
        r@ >rname count tuck type
jwilke's avatar
jwilke committed
1311
        12 swap - 0 max spaces space
jwilke's avatar
jwilke committed
1312 1313 1314
        ." Start: " r@ >rstart @ dup .addr space
        ." End: " r@ >rlen @ + .addr space
        ." DP: " r> >rdp @ .addr
jwilke's avatar
jwilke committed
1315
  REPEAT drop
jwilke's avatar
jwilke committed
1316
  s" rom" T $has? H 0= ?EXIT
jwilke's avatar
jwilke committed
1317 1318 1319
  cr ." Mirrored:"
  mirrored-link @
  BEGIN dup
jwilke's avatar
jwilke committed
1320
  WHILE space dup cell+ @ >rname count type @
jwilke's avatar
jwilke committed
1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
  REPEAT drop cr
  ;

\ -------- predefined regions

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

0 0 region dictionary
\ rom area for the compiler

jwilke's avatar
jwilke committed
1332
T has? rom H
jwilke's avatar
jwilke committed
1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348
[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


1349
: setup-target ( -- )   \G initialize target's memory space
jwilke's avatar
jwilke committed
1350
  s" rom" T $has? H
jwilke's avatar
jwilke committed
1351
  IF  \ check for ram and rom...
1352
      \ address-space area nip 0<>
jwilke's avatar
jwilke committed
1353 1354
      ram-dictionary area nip 0<>
      rom-dictionary area nip 0<>
1355
      and 0=
jwilke's avatar
jwilke committed
1356 1357 1358 1359 1360 1361 1362 1363
      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
1364
  nip 0=
jwilke's avatar
jwilke committed
1365
  ABORT" CROSS: define at least address-space or dictionary!!"
jwilke's avatar
jwilke committed
1366 1367 1368 1369 1370 1371 1372 1373

  \ allocate target for each region
  region-link
  BEGIN @ dup
  WHILE dup
        0 >rlink - >r
        r@ >rlen @
        IF      \ allocate mem
1374
                r@ >rlen @ allocatetarget dup image !
jwilke's avatar
jwilke committed
1375 1376
                r@ >rmem !

1377
                r@ >rlen @
jwilke's avatar
jwilke committed
1378
                target>bitmask-size allocatetarget
1379
                dup bit$ !
1380
                r@ >rbm !
jwilke's avatar
jwilke committed
1381

1382 1383 1384 1385
		r@ >rlen @
		tcell / 1+ cells allocatetarget r@ >rtype !

		rdrop
jwilke's avatar
jwilke committed
1386
        ELSE    r> drop THEN
1387 1388
   REPEAT drop ;

1389
\ MakeKernel                                           		22feb99jaw
1390

1391 1392 1393 1394 1395
: makekernel ( targetsize -- )
\G convenience word to setup the memory of the target
\G used by main.fs of the c-engine based systems
  100 swap dictionary (region)
  setup-target ;
1396 1397 1398 1399

>MINIMAL
: makekernel makekernel ;
>CROSS
jwilke's avatar
jwilke committed
1400

pazsan's avatar
pazsan committed
1401
\ \ switched tdp for rom support				03jun97jaw
jwilke's avatar
jwilke committed
1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434

\ 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]


0 value tdp
variable fixed		\ flag: true: no automatic switching
			\	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
1435 1436 1437 1438
: activate ( region -- )
\G next code goes to this region
  >rdp to tdp ;

jwilke's avatar
jwilke committed
1439
: (switchram)
jwilke's avatar
jwilke committed
1440
  fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
jwilke's avatar
jwilke committed
1441
  ram-dictionary activate ;
jwilke's avatar
jwilke committed
1442 1443 1444 1445 1446 1447

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

: switchrom
jwilke's avatar
jwilke committed
1448
  fixed @ ?EXIT rom-dictionary activate ;
jwilke's avatar
jwilke committed
1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463

: >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
1464
\ default compilation goes to rom
jwilke's avatar
jwilke committed
1465 1466 1467 1468
\ when romable support is off, only the rom switch is used (!!)
>auto

: there  tdp @ ;
anton's avatar
anton committed
1469

anton's avatar
anton committed
1470 1471
>TARGET

jwilke's avatar
jwilke committed
1472 1473
\ \ Target Memory Handling

anton's avatar
anton committed
1474 1475
\ Byte ordering and cell size                          06oct92py

pazsan's avatar
pazsan committed
1476 1477
: cell+         tcell + ;
: cells         tcell<< lshift ;
1478 1479
: chars         tchar * ;
: char+		tchar + ;
pazsan's avatar
pazsan committed
1480
: floats	tfloat * ;
1481
    
anton's avatar
anton committed
1482
>CROSS
pazsan's avatar
pazsan committed
1483
: cell/         tcell<< rshift ;
anton's avatar
anton committed
1484 1485
>TARGET
20 CONSTANT bl
jwilke's avatar
jwilke committed
1486
\ TNIL Constant NIL
anton's avatar
anton committed
1487 1488 1489

>CROSS

1490 1491
bigendian
[IF]
jwilke's avatar
jwilke committed
1492
   : DS!  ( d addr -- )  tcell bounds swap 1-
1493
     DO  maxbyte ud/mod rot I c!  -1 +LOOP  2drop ;
jwilke's avatar
jwilke committed
1494 1495
   : DS@  ( addr -- d )  >r 0 0 r> tcell bounds
     DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  LOOP ;
1496 1497 1498 1499
   : 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
1500
[ELSE]
jwilke's avatar
jwilke committed
1501
   : DS!  ( d addr -- )  tcell bounds
1502
     DO  maxbyte ud/mod rot I c!  LOOP  2drop ;
jwilke's avatar
jwilke committed
1503 1504
   : DS@  ( addr -- n )  >r 0 0 r> tcell bounds swap 1-
     DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  -1 +LOOP ;
1505 1506 1507 1508
   : 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
1509 1510
[THEN]

jwilke's avatar
jwilke committed
1511 1512 1513
: S! ( n addr -- ) >r s>d r> DS! ;
: S@ ( addr -- n ) DS@ d>s ;

jwilke's avatar
jwilke committed
1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529
: 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
                IF r> r> drop nip EXIT THEN
        THEN
        r> drop
        r>
  REPEAT
  2drop 0 ;

1530
: taddr>region-abort ( taddr -- region | 0 )
1531 1532
\G Same as taddr>region but aborts if taddr is not
\G a valid address in the target address space
1533 1534 1535 1536 1537
  dup taddr>region dup 0= 
  IF    drop cr ." Wrong address: " .addr
        -1 ABORT" Address out of range!"
  THEN nip ;

jwilke's avatar
jwilke committed
1538 1539 1540
: (>regionimage) ( taddr -- 'taddr )
  dup
  \ find region we want to address
1541
  taddr>region-abort
jwilke's avatar
jwilke committed
1542 1543 1544 1545 1546 1547
  >r
  \ calculate offset in region
  r@ >rstart @ -
  \ add regions real address in our memory
  r> >rmem @ + ;

1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567
: (>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
1568 1569 1570 1571 1572 1573 1574
\ 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
1575
: -bit ( addr n -- )  >bit invert over c@ and swap c! ;
jwilke's avatar
jwilke committed
1576

1577 1578
: @relbit ( taddr -- f ) (>regionbm) swap cell/ >bit swap c@ and ;

1579 1580 1581 1582 1583
: (relon) ( taddr -- )  
  [ [IFDEF] fd-relocation-table ]
  s" +" fd-relocation-table write-file throw
  dup s>d <# #s #> fd-relocation-table write-line throw
  [ [THEN] ]
1584
  (>regionbm) swap cell/ +bit ;
1585 1586 1587 1588 1589 1590

: (reloff) ( taddr -- ) 
  [ [IFDEF] fd-relocation-table ]
  s" -" fd-relocation-table write-file throw
  dup s>d <# #s #> fd-relocation-table write-line throw
  [ [THEN] ]
1591
  (>regionbm) swap cell/ -bit ;
jwilke's avatar
jwilke committed
1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603

: (>image) ( taddr -- absaddr ) image @ + ;

DEFER >image
DEFER relon
DEFER reloff
DEFER correcter

T has? relocate H
[IF]
' (relon) IS relon
' (reloff) IS reloff
1604
' (>regionimage) IS >image
jwilke's avatar
jwilke committed
1605 1606 1607
[ELSE]
' drop IS relon
' drop IS reloff
jwilke's avatar
jwilke committed
1608
' (>regionimage) IS >image
jwilke's avatar
jwilke committed
1609
[THEN]
anton's avatar
anton committed
1610 1611 1612 1613

\ Target memory access                                 06oct92py

: align+  ( taddr -- rest )
anton's avatar
anton committed
1614
    tcell tuck 1- and - [ tcell 1- ] Literal and ;
1615
: cfalign+  ( taddr -- rest )
pazsan's avatar
pazsan committed
1616
    \ see kernel.fs:cfaligned
pazsan's avatar
pazsan committed
1617
    /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
anton's avatar
anton committed
1618 1619 1620 1621 1622

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

1623
: cfaligned ( taddr1 -- taddr2 )
pazsan's avatar
pazsan committed
1624
    \ see kernel.fs
1625 1626
    dup cfalign+ + ;

jwilke's avatar
jwilke committed
1627 1628
: @  ( taddr -- w )     >image S@ ;
: !  ( w taddr -- )     >image S! ;
1629 1630
: c@ ( taddr -- char )  >image Sc@ ;
: c! ( char taddr -- )  >image Sc! ;
1631
: 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
1632
: 2! ( x1 x2 taddr -- ) T tuck ! cell+ ! H ;
anton's avatar
anton committed
1633 1634 1635 1636 1637 1638

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

: here  ( -- there )    there ;
: allot ( n -- )        tdp +! ;
jwilke's avatar
jwilke committed
1639 1640 1641
: ,     ( 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 ;
1642
: cfalign ( -- )
jwilke's avatar
jwilke committed
1643
    T here H cfalign+ 0 ?DO  bl T c, H tchar +LOOP ;
anton's avatar
anton committed
1644

1645
: >address		dup 0>= IF tbyte / THEN ; \ ?? jaw 
1646 1647
: A!                    swap >address swap dup relon T ! H ;
: A,    ( w -- )        >address T here H relon T , H ;
anton's avatar
anton committed
1648

1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664
\ high-level ghosts

>CROSS

Ghost (do)      Ghost (?do)                     2drop
Ghost (for)                                     drop
Ghost (loop)    Ghost (+loop)                   2drop
Ghost (next)                                    drop
Ghost (does>)   Ghost (compile)                 2drop
Ghost (.")      Ghost (S")      Ghost (ABORT")  2drop drop
Ghost (C")                                      drop
Ghost '                                         drop

\ user ghosts

Ghost state drop
1665 1666 1667 1668 1669 1670

\ \ --------------------        Host/Target copy etc.     	29aug01jaw


>CROSS

jwilke's avatar
jwilke committed
1671 1672 1673
: TD! >image DS! ;
: TD@ >image DS@ ;

1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692
: th-count ( taddr -- host-addr len )
\G returns host address of target string
  assert1( tbyte 1 = )
  dup X c@ swap X char+ >image swap ;

: ht-move ( haddr taddr len -- )
\G moves data from host-addr to destination in target-addr
\G character by character
  swap -rot bounds ?DO I c@ over X c! X char+ LOOP drop ;

2Variable last-string

: ht-string,  ( addr count -- )
  dup there swap last-string 2!
  dup T c, H bounds  ?DO  I c@ T c, H  LOOP ; 

>TARGET

: count dup X c@ swap X char+ swap ;
jwilke's avatar
jwilke committed
1693 1694

: on		-1 -1 rot TD!  ; 
1695
: off   	T 0 swap ! H ;
jwilke's avatar
jwilke committed
1696

jwilke's avatar
jwilke committed
1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719
: tcmove ( source dest len -- )
\G cmove in target memory
  tchar * bounds
  ?DO  dup T c@ H I T c! H 1+
  tchar +LOOP  drop ;

: td, ( d -- )
\G Store a host value as one cell into the target
  there tcell X allot TD! ;

\ \ Load Assembler

>TARGET
H also Forth definitions

\ FIXME: should we include the assembler really in the forth 
\ dictionary?!?!?!? This conflicts with the existing assembler 
\ of the host forth system!!
[IFDEF] asm-include asm-include [THEN] hex

previous


1720
>CROSS
anton's avatar
anton committed
1721

1722
: (cc) T a, H ;					' (cc) plugin-of colon,
1723
: (prim) T a, H ;				' (prim) plugin-of prim,
pazsan's avatar
pazsan committed
1724

1725
: (cr) >tempdp colon, tempdp> ;                 ' (cr) plugin-of colon-resolve
1726
: (ar) T ! H ;					' (ar) plugin-of addr-resolve
pazsan's avatar
pazsan committed
1727 1728 1729 1730 1731 1732
: (dr)  ( ghost res-pnt target-addr addr )
	>tempdp drop over 
	dup >magic @ <do:> =
	IF 	doer,
	ELSE	dodoes,
	THEN 
1733
	tempdp> ;				' (dr) plugin-of doer-resolve
pazsan's avatar
pazsan committed
1734 1735

: (cm) ( -- addr )
jwilke's avatar
jwilke committed
1736
    there -1 colon, ;				' (cm) plugin-of colonmark,
anton's avatar
anton committed
1737

jwilke's avatar
jwilke committed
1738
>TARGET
1739
: compile, ( xt -- )
jwilke's avatar
jwilke committed
1740
  dup xt>ghost >comp @ EXECUTE ;
jwilke's avatar
jwilke committed
1741
>CROSS
anton's avatar
anton committed
1742

1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753
\ resolve structure

: >next ;		\ link to next field
: >tag cell+ ;		\ indecates type of reference: 0: call, 1: address, 2: doer
: >taddr cell+ cell+ ;	
: >ghost 3 cells + ;
: >file 4 cells + ;
: >line 5 cells + ;

: (refered) ( ghost addr tag -- )
\G creates a reference to ghost at address taddr
1754 1755
    >space
    rot >link linked
1756 1757 1758 1759 1760
    ( taddr tag ) ,
    ( taddr ) , 
    last-header-ghost @ , 
    loadfile , 
    sourceline# , 
1761
    space>
1762 1763
;

jwilke's avatar
jwilke committed
1764
: refered ( ghost tag -- )
jwilke's avatar
jwilke committed
1765
\G creates a resolve structure
pazsan's avatar
pazsan committed
1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778
    T here aligned H swap (refered)
  ;

: killref ( addr ghost -- )
\G kills a forward reference to ghost at position addr
\G this is used to eleminate a :dovar refence after making a DOES>
    dup >magic @ <fwd> <> IF 2drop EXIT THEN
    swap >r >link
    BEGIN dup @ dup  ( addr last this )
    WHILE dup >taddr @ r@ =
 	 IF   @ over !
	 ELSE nip THEN
    REPEAT rdrop 2drop 
jwilke's avatar
jwilke committed
1779
  ;
anton's avatar
anton committed
1780

jwilke's avatar
jwilke committed
1781
Defer resolve-warning
anton's avatar
anton committed
1782

jwilke's avatar
jwilke committed
1783
: reswarn-test ( ghost res-struct -- ghost res-struct )
jwilke's avatar
jwilke committed
1784
  over cr ." Resolving " .ghost dup ."  in " >ghost @ .ghost ;
anton's avatar
anton committed
1785

jwilke's avatar
jwilke committed
1786
: reswarn-forward ( ghost res-struct -- ghost res-struct )
jwilke's avatar
jwilke committed
1787 1788
  over warnhead .ghost dup ."  is referenced in " 
  >ghost @ .ghost ;
anton's avatar
anton committed
1789

jwilke's avatar
jwilke committed
1790 1791
\ ' reswarn-test IS resolve-warning
 
anton's avatar
anton committed
1792 1793
\ resolve                                              14oct92py

pazsan's avatar