cross.fs 52.1 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 Free Software Foundation, Inc.
anton's avatar
anton committed
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

\ 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
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
anton's avatar
anton committed
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

\ Log:
\       changed in ; [ to state off           12may93jaw
\       included place +place                 12may93jaw
\       for a created word (variable, constant...)
\       is now an alias in the target voabulary.
\       this means it is no longer necessary to
\       switch between vocabularies for variable
\       initialization                        12may93jaw
\       discovered error in DOES>
\       replaced !does with (;code)           16may93jaw
\       made complete redesign and
\       introduced two vocs method
\       to be asure that the right words
\       are found                             08jun93jaw
\       btw:  ! works not with 16 bit
\             targets                         09jun93jaw
\       added: 2user and value                11jun93jaw

anton's avatar
anton committed
40 41 42
\ 	needed? works better now!!!		01mar97jaw
\	mach file is only loaded into target
\	cell corrected
jwilke's avatar
jwilke committed
43
\ 	romable extansions			27apr97-5jun97jaw
pazsan's avatar
pazsan committed
44 45 46 47
\	environmental query support		01sep97jaw
\	added own [IF] ... [ELSE] ... [THEN]	14sep97jaw
\	extra resolver for doers		20sep97jaw
\	added killref for DOES>			20sep97jaw
anton's avatar
anton committed
48 49


jwilke's avatar
jwilke committed
50 51 52 53 54 55 56 57 58 59
hex     \ the defualt base for the cross-compiler is hex !!
Warnings off

\ words that are generaly useful

: >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
60

pazsan's avatar
pazsan committed
61 62 63
: string, ( c-addr u -- )
    \ puts down string as cstring
    dup c, here swap chars dup allot move ;
64

jwilke's avatar
jwilke committed
65
: SetValue ( n -- <name> )
pazsan's avatar
pazsan committed
66 67
\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
68 69 70
\G SetValue searches in the current vocabulary
 save-input bl word >r restore-input throw r> count
 get-current search-wordlist
71
 IF ['] to execute ELSE Value THEN ;
jwilke's avatar
jwilke committed
72 73

: DefaultValue ( n -- <name> )
pazsan's avatar
pazsan committed
74 75
\G Same behaviour as "Value" if the <name> is not defined
\G DefaultValue searches in the current vocabulary
jwilke's avatar
jwilke committed
76 77
 save-input bl word >r restore-input throw r> count
 get-current search-wordlist
78
 IF bl word drop 2drop ELSE Value THEN ;
anton's avatar
anton committed
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

hex

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

: T  previous Cross also Target ; immediate
: G  Ghosts ; immediate
: H  previous Forth also Cross ; immediate

forth definitions

: T  previous Cross also Target ; immediate
: G  Ghosts ; immediate

: >cross  also Cross definitions previous ;
: >target also Target definitions previous ;
: >minimal also Minimal definitions previous ;

H

>CROSS

jwilke's avatar
jwilke committed
106 107 108
\ 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
109

jwilke's avatar
jwilke committed
110 111 112 113 114
: 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
115

jwilke's avatar
jwilke committed
116
\ Begin CROSS COMPILER:
anton's avatar
anton committed
117

pazsan's avatar
pazsan committed
118 119


jwilke's avatar
jwilke committed
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
\ \ --------------------        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

[IFUNDEF] DebugMaskSrouce Variable DebugMaskSource 0 DebugMaskSource ! [THEN]
[IFUNDEF] DebugMaskCross  Variable DebugMaskCross  0 DebugMaskCross  ! [THEN]

previous >CROSS

jwilke's avatar
jwilke committed
135 136 137
: .dec
  base @ decimal swap . base ! ;

jwilke's avatar
jwilke committed
138 139
: .sourcepos
  cr sourcefilename type ." :"
jwilke's avatar
jwilke committed
140
  sourceline# .dec ;
jwilke's avatar
jwilke committed
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155

: 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]


pazsan's avatar
pazsan committed
156

jwilke's avatar
jwilke committed
157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179
\ \ GhostNames Ghosts                                  9may93jaw

\ second name source to search trough list

VARIABLE GhostNames
0 GhostNames !

: GhostName ( -- addr )
    here GhostNames @ , GhostNames ! here 0 ,
    bl word count
    \ 2dup type space
    string, \ !! cfalign ?
    align ;

\ Ghost Builder                                        06oct92py

\ <T T> new version with temp variable                 10may93jaw

VARIABLE VocTemp

: <T  get-current VocTemp ! also Ghosts definitions ;
: T>  previous VocTemp @ set-current ;

pazsan's avatar
pazsan committed
180
hex
jwilke's avatar
jwilke committed
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241
4711 Constant <fwd>             4712 Constant <res>
4713 Constant <imm>             4714 Constant <do:>

\ iForth makes only immediate directly after create
\ make atonce trick! ?

Variable atonce atonce off

: NoExec true ABORT" CROSS: Don't execute ghost" ;

: GhostHeader <fwd> , 0 , ['] NoExec , ;

: >magic ;		\ type of ghost
: >link cell+ ;		\ pointer where ghost is in target, or if unresolved
			\ points to the where we have to resolve (linked-list)
: >exec cell+ cell+ ;	\ execution symantics (while target compiling) of ghost
: >end 3 cells + ;	\ room for additional tags
			\ for builder (create, variable...) words the
			\ execution symantics of words built are placed here

Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
Variable last-ghost	\ last ghost that is created
Variable last-header-ghost \ last ghost definitions with header

: Make-Ghost ( "name" -- ghost )
  >in @ GhostName swap >in !
  <T Create atonce @ IF immediate atonce off THEN
  here tuck swap ! ghostheader T>
  dup last-ghost !
  DOES> dup executed-ghost ! >exec @ execute ;

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

: gfind   ( string -- ghost true/1 / string false )
\ searches for string in word-list ghosts
  dup count [ ' ghosts >wordlist ] ALiteral search-wordlist
  dup IF >r >body nip r>  THEN ;

: gdiscover ( xt -- ghost true | xt false )
  GhostNames
  BEGIN @ dup
  WHILE 2dup
        cell+ @ dup >magic @ <fwd> <>
        >r >link @ = r> and
        IF cell+ @ nip true EXIT THEN
  REPEAT
  drop false ;

VARIABLE Already

: ghost   ( "name" -- ghost )
  Already off
  >in @  bl word gfind   IF  Already on nip EXIT  THEN
  drop  >in !  Make-Ghost ;

: >ghostname ( ghost -- adr len )
  GhostNames
  BEGIN @ dup
  WHILE 2dup cell+ @ =
  UNTIL nip 2 cells + count
pazsan's avatar
pazsan committed
242 243 244
  ELSE  2drop 
	\ true abort" CROSS: Ghostnames inconsistent"
	s" ?!?!?!"
jwilke's avatar
jwilke committed
245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
  THEN ;

' >ghostname ALIAS @name

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

\ Predefined ghosts                                    12dec92py

ghost 0=                                        drop
ghost branch    ghost ?branch                   2drop
ghost (do)      ghost (?do)                     2drop
ghost (for)                                     drop
ghost (loop)    ghost (+loop)                   2drop
ghost (next)                                    drop
ghost unloop    ghost ;S                        2drop
ghost lit       ghost (compile) ghost !         2drop drop
ghost (does>)   ghost noop                      2drop
ghost (.")      ghost (S")      ghost (ABORT")  2drop drop
ghost '                                         drop
ghost :docol    ghost :doesjump ghost :dodoes   2drop drop
pazsan's avatar
pazsan committed
266
ghost :dovar					drop
jwilke's avatar
jwilke committed
267 268
ghost over      ghost =         ghost drop      2drop drop
ghost - drop
pazsan's avatar
pazsan committed
269 270
ghost 2drop drop
ghost 2dup drop
jwilke's avatar
jwilke committed
271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289

\ \ Parameter for target systems                         06oct92py

\ we define it ans like...
wordlist Constant target-environment

VARIABLE env-current \ save information of current dictionary to restore with environ>

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

>TARGET

: environment?
  target-environment search-wordlist 
  IF execute true ELSE false THEN ;

: e? name T environment? H 0= ABORT" environment variable not defined!" ;

jwilke's avatar
jwilke committed
290 291 292 293 294 295
: has? 	name T environment? H 
	IF 	\ environment variable is present, return its value
	ELSE	\ environment variable is not present, return false
		\ !! JAW abort is just for testing
		false true ABORT" arg" 
	THEN ;
jwilke's avatar
jwilke committed
296 297 298

: $has? T environment? H IF ELSE false THEN ;

pazsan's avatar
pazsan committed
299 300
>ENVIRON get-order get-current swap 1+ set-order
true SetValue compiler
jwilke's avatar
jwilke committed
301
true  SetValue cross
pazsan's avatar
pazsan committed
302 303
true SetValue standard-threading
>TARGET previous
jwilke's avatar
jwilke committed
304 305 306

mach-file count included hex

jwilke's avatar
jwilke committed
307 308
>ENVIRON

pazsan's avatar
pazsan committed
309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325
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
[THEN]

true DefaultValue interpreter
true DefaultValue ITC
false DefaultValue rom
jwilke's avatar
jwilke committed
326

jwilke's avatar
jwilke committed
327 328 329 330 331
>TARGET
s" relocate" T environment? H 
[IF]	SetValue NIL
[ELSE]	>ENVIRON T NIL H SetValue relocate
[THEN]
pazsan's avatar
pazsan committed
332 333 334

>CROSS

jwilke's avatar
jwilke committed
335
\ \ Create additional parameters                         19jan95py
pazsan's avatar
pazsan committed
336

337
1 8 lshift Constant maxbyte
pazsan's avatar
pazsan committed
338
T
anton's avatar
anton committed
339
NIL		   Constant TNIL
pazsan's avatar
pazsan committed
340 341 342 343
cell               Constant tcell
cell<<             Constant tcell<<
cell>bit           Constant tcell>bit
bits/byte          Constant tbits/byte
344
bits/byte 8 /      Constant tchar
pazsan's avatar
pazsan committed
345
float              Constant tfloat
346
1 bits/byte lshift Constant tmaxbyte
pazsan's avatar
pazsan committed
347 348
H

anton's avatar
anton committed
349 350 351 352 353 354 355 356
\ Variables                                            06oct92py

Variable image
Variable tlast    TNIL tlast !  \ Last name field
Variable tlastcfa \ Last code field
Variable tdoes    \ Resolve does> calls
Variable bit$

jwilke's avatar
jwilke committed
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
\ statistics						10jun97jaw

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

\ Memory initialisation                                05dec92py

[IFDEF] Memory \ Memory is a bigFORTH feature
   also Memory
   : initmem ( var len -- )
     2dup swap handle! >r @ r> erase ;
   toss
[ELSE]
   : initmem ( var len -- )
     tuck allocate abort" CROSS: No memory for target"
     ( len var adr ) dup rot !
     ( len adr ) swap erase ;
[THEN]

\ MakeKernal                                           12dec92py

: makekernel ( targetsize -- targetsize )
  bit$  over 1- tcell>bit rshift 1+ initmem
  image over initmem ;

>MINIMAL
: makekernel makekernel ;


>CROSS

pazsan's avatar
pazsan committed
388
\ \ memregion.fs
jwilke's avatar
jwilke committed
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


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 !


: >rdp 2 cells + ;
: >rlen cell+ ;
: >rstart ;


: region ( addr len -- )                \G create a new region
  \ 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 ) ,
	region-link linked name string,
  ELSE	\ store new parameters in region
        bl word drop
	>body >r r@ last-defined-region !
	r@ cell+ ! dup r@ ! r> 2 cells + !
  THEN ;

: borders ( region -- startaddr endaddr ) \G returns lower and upper region border
  dup @ swap cell+ @ over + ;

: extent  ( region -- startaddr len )   \G returns the really used area
  dup @ swap 2 cells + @ over - ;

: area ( region -- startaddr totallen ) \G returns the total area
  dup @ swap cell+ @ ;

: mirrored                              \G mark a region as mirrored
  mirrored-link
  linked last-defined-region @ , ;

: .addr
  base @ >r hex
  tcell 2 u>
  IF s>d <# # # # # '. hold # # # # #> type
  ELSE s>d <# # # # # # #> type
  THEN r> base ! ;

: .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
  WHILE cr 3 cells - >r
	r@ 4 cells + count tuck type
        12 swap - 0 max spaces space
	." Start: " r@ @ dup .addr space
	." End: " r@ 1 cells + @ + .addr space
	." DP: " r> 2 cells + @ .addr 
  REPEAT drop
jwilke's avatar
jwilke committed
451
  s" rom" T $has? H 0= ?EXIT
jwilke's avatar
jwilke committed
452 453 454 455 456 457 458 459 460 461 462 463 464 465 466
  cr ." Mirrored:"
  mirrored-link @
  BEGIN dup
  WHILE	space dup cell+ @ 4 cells + count type @
  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
467
T has? rom H
jwilke's avatar
jwilke committed
468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484
[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


: setup-target ( -- )   \G initialize targets memory space
jwilke's avatar
jwilke committed
485
  s" rom" T $has? H
jwilke's avatar
jwilke committed
486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502
  IF  \ check for ram and rom...
      address-space area nip
      ram-dictionary area nip
      rom-dictionary area nip
      and and 0=
      ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
  THEN
  address-space area nip
  IF
      address-space area
  ELSE
      dictionary area
  THEN
  dup 0=
  ABORT" CROSS: define at least address-space or dictionary!!"
  + makekernel drop ;

pazsan's avatar
pazsan committed
503
\ \ switched tdp for rom support				03jun97jaw
jwilke's avatar
jwilke committed
504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537

\ 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

: (switchram)
jwilke's avatar
jwilke committed
538
  fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
jwilke's avatar
jwilke committed
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
  ram-dictionary >rdp to tdp ;

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

: switchrom
  fixed @ ?EXIT rom-dictionary >rdp to tdp ;

: >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 ! ;

\ default compilation goed to rom
\ when romable support is off, only the rom switch is used (!!)
>auto

: there  tdp @ ;
anton's avatar
anton committed
567

anton's avatar
anton committed
568 569
>TARGET

jwilke's avatar
jwilke committed
570 571
\ \ Target Memory Handling

anton's avatar
anton committed
572 573
\ Byte ordering and cell size                          06oct92py

pazsan's avatar
pazsan committed
574 575
: cell+         tcell + ;
: cells         tcell<< lshift ;
anton's avatar
anton committed
576
: chars         ;
anton's avatar
anton committed
577
: char+		1 + ;
pazsan's avatar
pazsan committed
578
: floats	tfloat * ;
579
    
anton's avatar
anton committed
580
>CROSS
pazsan's avatar
pazsan committed
581
: cell/         tcell<< rshift ;
anton's avatar
anton committed
582 583
>TARGET
20 CONSTANT bl
jwilke's avatar
jwilke committed
584
\ TNIL Constant NIL
anton's avatar
anton committed
585 586 587

>CROSS

588 589
bigendian
[IF]
jwilke's avatar
jwilke committed
590
   : S!  ( n addr -- )  >r s>d r> tcell bounds swap 1-
591
     DO  maxbyte ud/mod rot I c!  -1 +LOOP  2drop ;
jwilke's avatar
jwilke committed
592
   : S@  ( addr -- n )  >r 0 0 r> tcell bounds
593
     DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  LOOP d>s ;
594 595 596 597
   : 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
598
[ELSE]
jwilke's avatar
jwilke committed
599
   : S!  ( n addr -- )  >r s>d r> tcell bounds
600
     DO  maxbyte ud/mod rot I c!  LOOP  2drop ;
jwilke's avatar
jwilke committed
601
   : S@  ( addr -- n )  >r 0 0 r> tcell bounds swap 1-
602
     DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  -1 +LOOP d>s ;
603 604 605 606
   : 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
607 608 609 610 611 612 613 614 615 616
[THEN]

>CROSS
\ 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
617
: -bit ( addr n -- )  >bit invert over c@ and swap c! ;
anton's avatar
anton committed
618
: relon ( taddr -- )  bit$ @ swap cell/ +bit ;
pazsan's avatar
pazsan committed
619
: reloff ( taddr -- )  bit$ @ swap cell/ -bit ;
anton's avatar
anton committed
620 621 622 623

\ Target memory access                                 06oct92py

: align+  ( taddr -- rest )
anton's avatar
anton committed
624
    tcell tuck 1- and - [ tcell 1- ] Literal and ;
625
: cfalign+  ( taddr -- rest )
pazsan's avatar
pazsan committed
626
    \ see kernel.fs:cfaligned
pazsan's avatar
pazsan committed
627
    /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
anton's avatar
anton committed
628 629 630 631 632

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

633
: cfaligned ( taddr1 -- taddr2 )
pazsan's avatar
pazsan committed
634
    \ see kernel.fs
635 636
    dup cfalign+ + ;

anton's avatar
anton committed
637 638 639
>CROSS
: >image ( taddr -- absaddr )  image @ + ;
>TARGET
jwilke's avatar
jwilke committed
640 641
: @  ( taddr -- w )     >image S@ ;
: !  ( w taddr -- )     >image S! ;
642 643
: c@ ( taddr -- char )  >image Sc@ ;
: c! ( char taddr -- )  >image Sc! ;
644 645
: 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
: 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
anton's avatar
anton committed
646 647 648 649 650 651

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

: here  ( -- there )    there ;
: allot ( n -- )        tdp +! ;
jwilke's avatar
jwilke committed
652
: ,     ( w -- )        T here H tcell T allot  ! H T here drop H ;
653
: c,    ( char -- )     T here    tchar allot c! H ;
anton's avatar
anton committed
654
: align ( -- )          T here H align+ 0 ?DO  bl T c, H LOOP ;
655 656
: cfalign ( -- )
    T here H cfalign+ 0 ?DO  bl T c, H LOOP ;
anton's avatar
anton committed
657 658 659 660 661 662

: A!                    dup relon T ! H ;
: A,    ( w -- )        T here H relon T , H ;

>CROSS

jwilke's avatar
jwilke committed
663 664
: tcmove ( source dest len -- )
\G cmove in target memory
665
  tchar * bounds
jwilke's avatar
jwilke committed
666
  ?DO  dup T c@ H I T c! H 1+
667
  tchar +LOOP  drop ;
anton's avatar
anton committed
668 669

>TARGET
jwilke's avatar
jwilke committed
670
H also Forth definitions \ ." asm: " order
anton's avatar
anton committed
671

jwilke's avatar
jwilke committed
672 673 674 675 676 677
: X 	also target bl word find
	IF	state @ IF compile,
		ELSE execute THEN
	ELSE	previous ABORT" Cross: access method not supported!"
	THEN 
	previous ; immediate
anton's avatar
anton committed
678

jwilke's avatar
jwilke committed
679
[IFDEF] asm-include asm-include [THEN] hex
anton's avatar
anton committed
680

jwilke's avatar
jwilke committed
681 682 683 684 685
previous
>CROSS H

\ \ --------------------        Compiler Plug Ins               01aug97jaw

pazsan's avatar
pazsan committed
686 687 688 689 690 691 692 693
\  Compiler States

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

jwilke's avatar
jwilke committed
694 695
Defer lit, ( n -- )
Defer alit, ( n -- )
pazsan's avatar
pazsan committed
696 697 698 699 700 701 702 703 704 705 706

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

jwilke's avatar
jwilke committed
707
Defer colon, ( tcfa -- )		\ compiles call to tcfa at current position
pazsan's avatar
pazsan committed
708
Defer colonmark, ( -- addr )		\ marks a colon call
jwilke's avatar
jwilke committed
709
Defer colon-resolve ( tcfa addr -- )
pazsan's avatar
pazsan committed
710

jwilke's avatar
jwilke committed
711
Defer addr-resolve ( target-addr addr -- )
pazsan's avatar
pazsan committed
712 713 714 715 716 717 718 719
Defer doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )

Defer do,	( -- do-token )
Defer ?do,	( -- ?do-token )
Defer for,	( -- for-token )
Defer loop,	( do-token / ?do-token -- )
Defer +loop,	( do-token / ?do-token -- )
Defer next,	( for-token )
anton's avatar
anton committed
720

jwilke's avatar
jwilke committed
721 722 723
[IFUNDEF] ca>native
defer ca>native	
[THEN]
anton's avatar
anton committed
724

jwilke's avatar
jwilke committed
725 726 727 728 729
>TARGET
DEFER >body             \ we need the system >body
			\ and the target >body
>CROSS
T 2 cells H VALUE xt>body
pazsan's avatar
pazsan committed
730 731
DEFER doprim,	\ compiles start of a primitive
DEFER docol,   	\ compiles start of a colon definition
jwilke's avatar
jwilke committed
732 733 734 735
DEFER doer,		
DEFER fini,      \ compiles end of definition ;s
DEFER doeshandler,
DEFER dodoes,
anton's avatar
anton committed
736

jwilke's avatar
jwilke committed
737 738
DEFER ]comp     \ starts compilation
DEFER comp[     \ ends compilation
anton's avatar
anton committed
739

pazsan's avatar
pazsan committed
740 741 742 743 744 745 746 747 748 749 750 751 752 753 754
: (cc) T a, H ;					' (cc) IS colon,

: (cr) >tempdp ]comp colon, comp[ tempdp> ; 	' (cr) IS colon-resolve
: (ar) T ! H ;					' (ar) IS addr-resolve
: (dr)  ( ghost res-pnt target-addr addr )
	>tempdp drop over 
	dup >magic @ <do:> =
	IF 	doer,
	ELSE	dodoes,
	THEN 
	tempdp> ;				' (dr) IS doer-resolve

: (cm) ( -- addr )
    T here align H
    -1 colon, ;					' (cm) IS colonmark,
anton's avatar
anton committed
755

jwilke's avatar
jwilke committed
756 757 758
>TARGET
: compile, colon, ;
>CROSS
anton's avatar
anton committed
759

jwilke's avatar
jwilke committed
760 761
\ file loading

pazsan's avatar
pazsan committed
762 763 764
: >fl-id   1 cells + ;
: >fl-name 2 cells + ;

jwilke's avatar
jwilke committed
765
Variable filelist 0 filelist !
pazsan's avatar
pazsan committed
766 767
0 Value	 filemem
: loadfile filemem >fl-name ;
jwilke's avatar
jwilke committed
768

pazsan's avatar
pazsan committed
769
1 [IF] \ !! JAW WIP
anton's avatar
anton committed
770

jwilke's avatar
jwilke committed
771
: add-included-file ( adr len -- )
pazsan's avatar
pazsan committed
772 773
	dup char+ >fl-name allocate throw >r
	r@ >fl-name place
jwilke's avatar
jwilke committed
774
	filelist @ r@ !
pazsan's avatar
pazsan committed
775 776
	r> dup filelist ! to FileMem
	;
jwilke's avatar
jwilke committed
777 778 779 780 781 782 783 784 785 786 787

: included? ( c-addr u -- f )
  	filelist
	BEGIN	@ dup
	WHILE	>r r@ 1 cells + count compare 0=
		IF rdrop 2drop true EXIT THEN
		r>
	REPEAT
	2drop drop false ;	

: included 
pazsan's avatar
pazsan committed
788 789 790 791
\	cr ." Including: " 2dup type ." ..."
	FileMem >r
	2dup add-included-file included 
	r> to FileMem ;
jwilke's avatar
jwilke committed
792 793 794 795 796 797

: include bl word count included ;

: require bl word count included ;

[THEN]
anton's avatar
anton committed
798

jwilke's avatar
jwilke committed
799
\ resolve structure
anton's avatar
anton committed
800

jwilke's avatar
jwilke committed
801
: >next ;		\ link to next field
pazsan's avatar
pazsan committed
802
: >tag cell+ ;		\ indecates type of reference: 0: call, 1: address, 2: doer
jwilke's avatar
jwilke committed
803
: >taddr cell+ cell+ ;	
jwilke's avatar
jwilke committed
804
: >ghost 3 cells + ;
jwilke's avatar
jwilke committed
805 806
: >file 4 cells + ;
: >line 5 cells + ;
anton's avatar
anton committed
807

pazsan's avatar
pazsan committed
808 809 810 811 812 813 814 815 816 817
: (refered) ( ghost addr tag -- )
\G creates a reference to ghost at address taddr
    rot >r here r@ >link @ , r> >link ! 
    ( taddr tag ) ,
    ( taddr ) , 
    last-header-ghost @ , 
    loadfile , 
    sourceline# , 
  ;

jwilke's avatar
jwilke committed
818
: refered ( ghost tag -- )
jwilke's avatar
jwilke committed
819
\G creates a resolve structure
pazsan's avatar
pazsan committed
820 821 822 823 824 825 826 827 828 829 830 831 832
    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
833
  ;
anton's avatar
anton committed
834

jwilke's avatar
jwilke committed
835
Defer resolve-warning
anton's avatar
anton committed
836

jwilke's avatar
jwilke committed
837 838
: reswarn-test ( ghost res-struct -- ghost res-struct )
  over cr ." Resolving " >ghostname type dup ."  in " >ghost @ >ghostname type ;
anton's avatar
anton committed
839

jwilke's avatar
jwilke committed
840 841 842
: reswarn-forward ( ghost res-struct -- ghost res-struct )
  over warnhead >ghostname type dup ."  is referenced in " 
  >ghost @ >ghostname type ;
anton's avatar
anton committed
843

jwilke's avatar
jwilke committed
844 845
\ ' reswarn-test IS resolve-warning
 
anton's avatar
anton committed
846 847
\ resolve                                              14oct92py

pazsan's avatar
pazsan committed
848 849 850 851 852 853 854 855 856 857 858 859 860 861
 : resolve-loop ( ghost resolve-list tcfa -- )
    >r
    BEGIN dup WHILE 
\  	  dup >tag @ 2 = IF reswarn-forward THEN
	  resolve-warning 
	  r@ over >taddr @ 
	  2 pick >tag @
	  CASE	0 OF colon-resolve ENDOF
		1 OF addr-resolve ENDOF
		2 OF doer-resolve ENDOF
	  ENDCASE
	  @ \ next list element
    REPEAT 2drop rdrop 
  ;
jwilke's avatar
jwilke committed
862 863 864 865

\ : resolve-loop ( ghost tcfa -- ghost tcfa )
\  >r dup >link @
\  BEGIN  dup  WHILE  dup T @ H r@ rot T ! H REPEAT  drop r> ;
anton's avatar
anton committed
866 867 868

\ exists                                                9may93jaw

jwilke's avatar
jwilke committed
869 870 871 872 873
Variable TWarnings
TWarnings on
Variable Exists-Warnings
Exists-Warnings on

anton's avatar
anton committed
874 875 876 877 878
: exists ( ghost tcfa -- )
  over GhostNames
  BEGIN @ dup
  WHILE 2dup cell+ @ =
  UNTIL
jwilke's avatar
jwilke committed
879 880 881 882 883
        2 cells + count
        TWarnings @ Exists-Warnings @ and
        IF warnhead type ."  exists"
        ELSE 2drop THEN
        drop swap >link !
pazsan's avatar
pazsan committed
884
  ELSE  true abort" CROSS: Ghostnames inconsistent "
anton's avatar
anton committed
885 886 887
  THEN ;

: resolve  ( ghost tcfa -- )
pazsan's avatar
pazsan committed
888 889 890 891 892 893 894 895 896 897 898 899 900 901 902
\G resolve referencies to ghost with tcfa
    \ is ghost resolved?, second resolve means another definition with the
    \ same name
    over forward? 0= IF  exists EXIT THEN
    \ get linked-list
    swap >r r@ >link @ swap \ ( list tcfa R: ghost )
    \ mark ghost as resolved
    dup r@ >link ! <res> r@ >magic !
    \ loop through forward referencies
    r> -rot 
    comp-state @ >r Resolving comp-state !
    resolve-loop 
    r> comp-state !

    ['] noop IS resolve-warning 
jwilke's avatar
jwilke committed
903
  ;
anton's avatar
anton committed
904 905 906

\ gexecute ghost,                                      01nov92py

jwilke's avatar
jwilke committed
907
: is-forward   ( ghost -- )
pazsan's avatar
pazsan committed
908
  colonmark, 0 (refered) ; \ compile space for call
jwilke's avatar
jwilke committed
909 910 911 912 913 914 915 916 917

: is-resolved   ( ghost -- )
  >link @ colon, ; \ compile-call

: gexecute   ( ghost -- )
  dup @ <fwd> = IF  is-forward  ELSE  is-resolved  THEN ;

: addr,  ( ghost -- )
  dup @ <fwd> = IF  1 refered 0 T a, H ELSE >link @ T a, H THEN ;
anton's avatar
anton committed
918

jwilke's avatar
jwilke committed
919
\ !! : ghost,     ghost  gexecute ;
anton's avatar
anton committed
920 921 922 923 924 925 926

\ .unresolved                                          11may93jaw

variable ResolveFlag

\ ?touched                                             11may93jaw

jwilke's avatar
jwilke committed
927
: ?touched ( ghost -- flag ) dup forward? swap >link @
anton's avatar
anton committed
928 929
                               0 <> and ;

jwilke's avatar
jwilke committed
930 931 932 933 934 935 936 937 938 939 940
: .forwarddefs ( ghost -- )
	."  appeared in:"
	>link
	BEGIN	@ dup
	WHILE	cr 5 spaces
		dup >ghost @ >ghostname type
		."  file " dup >file @ ?dup IF count type ELSE ." CON" THEN
		."  line " dup >line @ .dec
	REPEAT 
	drop ;

anton's avatar
anton committed
941 942
: ?resolved  ( ghostname -- )
  dup cell+ @ ?touched
jwilke's avatar
jwilke committed
943 944 945 946 947
  IF  	dup 
	cell+ cell+ count cr type ResolveFlag on 
	cell+ @ .forwarddefs
  ELSE 	drop 
  THEN ;
anton's avatar
anton committed
948 949 950 951 952 953 954

>MINIMAL
: .unresolved  ( -- )
  ResolveFlag off cr ." Unresolved: "
  Ghostnames
  BEGIN @ dup
  WHILE dup ?resolved
anton's avatar
anton committed
955 956
  REPEAT drop ResolveFlag @
  IF
anton's avatar
anton committed
957
      -1 abort" Unresolved words!"
anton's avatar
anton committed
958 959 960 961
  ELSE
      ." Nothing!"
  THEN
  cr ;
anton's avatar
anton committed
962

jwilke's avatar
jwilke committed
963 964 965 966 967
: .stats
  base @ >r decimal
  cr ." named Headers: " headers-named @ . 
  r> base ! ;

anton's avatar
anton committed
968 969 970 971 972 973 974 975
>CROSS
\ Header states                                        12dec92py

: flag! ( 8b -- )   tlast @ dup >r T c@ xor r> c! H ;

VARIABLE ^imm

>TARGET
976
: immediate     40 flag!
977
                ^imm @ @ dup <imm> = IF  drop  EXIT  THEN
anton's avatar
anton committed
978 979
                <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
                <imm> ^imm @ ! ;
980
: restrict      20 flag! ;
jwilke's avatar
jwilke committed
981

pazsan's avatar
pazsan committed
982 983 984 985
: isdoer	
\G define a forth word as doer, this makes obviously only sence on
\G forth processors such as the PSC1000
		<do:> last-header-ghost @ >magic ! ;
anton's avatar
anton committed
986 987 988 989 990 991
>CROSS

\ ALIAS2 ansforth conform alias                          9may93jaw

: ALIAS2 create here 0 , DOES> @ execute ;
\ usage:
992
\ ' <name> alias2 bla !
anton's avatar
anton committed
993 994 995

\ Target Header Creation                               01nov92py

jwilke's avatar
jwilke committed
996
>TARGET
anton's avatar
anton committed
997
: string,  ( addr count -- )
pazsan's avatar
pazsan committed
998
  dup T c, H bounds  ?DO  I c@ T c, H  LOOP ; 
jwilke's avatar
jwilke committed
999
: name,  ( "name" -- )  bl word count T string, cfalign H ;
anton's avatar
anton committed
1000
: view,   ( -- ) ( dummy ) ;
jwilke's avatar
jwilke committed
1001
>CROSS
anton's avatar
anton committed
1002

1003 1004
\ Target Document Creation (goes to crossdoc.fd)       05jul95py

pazsan's avatar
pazsan committed
1005
s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
1006 1007
\ contains the file-id of the documentation file

pazsan's avatar
pazsan committed
1008
: T-\G ( -- )
1009
    source >in @ /string doc-file-id write-line throw
pazsan's avatar
pazsan committed
1010
    postpone \ ;
1011

pazsan's avatar
pazsan committed
1012
Variable to-doc  to-doc on
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024

: cross-doc-entry  ( -- )
    to-doc @ tlast @ 0<> and	\ not an anonymous (i.e. noname) header
    IF
	s" " doc-file-id write-line throw
	s" make-doc " doc-file-id write-file throw
	tlast @ >image count $1F and doc-file-id write-file throw
	>in @
	[char] ( parse 2drop
	[char] ) parse doc-file-id write-file throw
	s"  )" doc-file-id write-file throw
	[char] \ parse 2drop					
pazsan's avatar
pazsan committed
1025
	T-\G
1026
	>in !
pazsan's avatar
pazsan committed
1027
    THEN ;
1028

pazsan's avatar
pazsan committed
1029 1030
\ Target TAGS creation

pazsan's avatar
pazsan committed
1031
s" kernel.TAGS" r/w create-file throw value tag-file-id
pazsan's avatar
pazsan committed
1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043
\ contains the file-id of the tags file

Create tag-beg 2 c,  7F c, bl c,
Create tag-end 2 c,  bl c, 01 c,
Create tag-bof 1 c,  0C c,

2variable last-loadfilename 0 0 last-loadfilename 2!
	    
: put-load-file-name ( -- )
    loadfilename 2@ last-loadfilename 2@ d<>
    IF
	tag-bof count tag-file-id write-line throw
1044
	sourcefilename 2dup
pazsan's avatar
pazsan committed
1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
	tag-file-id write-file throw
	last-loadfilename 2!
	s" ,0" tag-file-id write-line throw
    THEN ;

: cross-tag-entry  ( -- )
    tlast @ 0<>	\ not an anonymous (i.e. noname) header
    IF
	put-load-file-name
	source >in @ min tag-file-id write-file throw
	tag-beg count tag-file-id write-file throw
	tlast @ >image count $1F and tag-file-id write-file throw
	tag-end count tag-file-id write-file throw
1058
	base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
pazsan's avatar
pazsan committed
1059 1060 1061 1062 1063
\	>in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
	s" ,0" tag-file-id write-line throw
	base !
    THEN ;

pazsan's avatar
pazsan committed
1064 1065 1066 1067 1068
\ Check for words

Defer skip? ' false IS skip?

: defined? ( -- flag ) \ name
jwilke's avatar
jwilke committed
1069
    ghost forward? 0= ;
pazsan's avatar
pazsan committed
1070 1071

: needed? ( -- flag ) \ name
anton's avatar
anton committed
1072 1073 1074 1075 1076
\G returns a false flag when
\G a word is not defined
\G a forward reference exists
\G so the definition is not skipped!
    bl word gfind
jwilke's avatar
jwilke committed
1077
    IF dup forward?
anton's avatar
anton committed
1078 1079 1080
	nip
	0=
    ELSE  drop true  THEN ;
pazsan's avatar
pazsan committed
1081

1082 1083 1084
: doer? ( -- flag ) \ name
    ghost >magic @ <do:> = ;

pazsan's avatar
pazsan committed
1085 1086 1087
: skip-defs ( -- )
    BEGIN  refill  WHILE  source -trailing nip 0= UNTIL  THEN ;

pazsan's avatar
pazsan committed
1088 1089
\ Target header creation

pazsan's avatar
pazsan committed
1090 1091
Variable CreateFlag
CreateFlag off
jwilke's avatar
jwilke committed
1092

pazsan's avatar
pazsan committed
1093 1094
Variable NoHeaderFlag
NoHeaderFlag off
anton's avatar
anton committed
1095

pazsan's avatar
pazsan committed
1096 1097 1098 1099
: 0.r ( n1 n2 -- ) 
    base @ >r hex 
    0 swap <# 0 ?DO # LOOP #> type 
    r> base ! ;
jwilke's avatar
jwilke committed
1100 1101 1102 1103 1104 1105 1106
: .sym
  bounds 
  DO I c@ dup
	CASE	'/ OF drop ." \/" ENDOF
		'\ OF drop ." \\" ENDOF
		dup OF emit ENDOF
	ENDCASE
pazsan's avatar
pazsan committed
1107
    LOOP ;
jwilke's avatar
jwilke committed
1108

pazsan's avatar
pazsan committed
1109
: (Theader ( "name" -- ghost )
pazsan's avatar
pazsan committed
1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140
    \  >in @ bl word count type 2 spaces >in !
    \ wordheaders will always be compiled to rom
    switchrom
    \ build header in target
    NoHeaderFlag @
    IF  NoHeaderFlag off
    ELSE
	T align H view,
	tlast @ dup 0> IF  T 1 cells - THEN  A, H  there tlast !
	1 headers-named +!	\ Statistic
	>in @ T name, H >in !
    THEN
    T cfalign here H tlastcfa !
    \ Symbol table
\    >in @ cr ." sym:s/CFA=" there 4 0.r ." /"  bl word count .sym ." /g" cr >in !
    CreateFlag @
    IF
	>in @ alias2 swap >in !         \ create alias in target
	>in @ ghost swap >in !
	swap also ghosts ' previous swap !     \ tick ghost and store in alias
	CreateFlag off
    ELSE ghost
    THEN
    dup Last-Header-Ghost !
    dup >magic ^imm !     \ a pointer for immediate
    Already @
    IF  dup >end tdoes !
    ELSE 0 tdoes !
    THEN
    80 flag!
    cross-doc-entry cross-tag-entry ;
anton's avatar
anton committed
1141 1142

VARIABLE ;Resolve 1 cells allot
jwilke's avatar
jwilke committed
1143 1144
\ this is the resolver information from ":"
\ resolving is done by ";"
anton's avatar
anton committed
1145

1146 1147
: Theader  ( "name" -- ghost )
  (THeader dup there resolve 0 ;Resolve ! ;
anton's avatar
anton committed
1148 1149 1150

>TARGET
: Alias    ( cfa -- ) \ name
pazsan's avatar
pazsan committed
1151
    >in @ skip? IF  2drop  EXIT  THEN  >in !
jwilke's avatar
jwilke committed
1152
    dup 0< s" prims" T $has? H 0= and
pazsan's avatar
pazsan committed
1153
    IF
jwilke's avatar
jwilke committed
1154
	.sourcepos ." needs prim: " >in @ bl word count type >in ! cr
pazsan's avatar
pazsan committed
1155 1156
    THEN
    (THeader over resolve T A, H 80 flag! ;
1157
: Alias:   ( cfa -- ) \ name
pazsan's avatar
pazsan committed
1158
    >in @ skip? IF  2drop  EXIT  THEN  >in !
jwilke's avatar
jwilke committed
1159
    dup 0< s" prims" T $has? H 0= and
pazsan's avatar
pazsan committed
1160
    IF
jwilke's avatar
jwilke committed
1161
	.sourcepos ." needs doer: " >in @ bl word count type >in ! cr
pazsan's avatar
pazsan committed
1162 1163
    THEN
    ghost tuck swap resolve <do:> swap >magic ! ;
anton's avatar
anton committed
1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190
>CROSS

\ Conditionals and Comments                            11may93jaw

: ;Cond
  postpone ;
  swap ! ;  immediate

: Cond: ( -- ) \ name {code } ;
  atonce on
  ghost
  >exec
  :NONAME ;

: restrict? ( -- )
\ aborts on interprete state - ae
  state @ 0= ABORT" CROSS: Restricted" ;

: Comment ( -- )
  >in @ atonce on ghost swap >in ! ' swap >exec ! ;

Comment (       Comment \

\ compile                                              10may93jaw

: compile  ( -- ) \ name
  restrict?
pazsan's avatar
pazsan committed
1191
  bl word gfind dup 0= ABORT" CROSS: Can't compile "
anton's avatar
anton committed
1192 1193 1194 1195 1196
  0> ( immediate? )
  IF    >exec @ compile,
  ELSE  postpone literal postpone gexecute  THEN ;
                                        immediate

jwilke's avatar
jwilke committed
1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223
: [G'] 
\G ticks a ghost and returns its address
  bl word gfind 0= ABORT" CROSS: Ghost don't exists"
  state @
  IF   postpone literal
  THEN ; immediate

: ghost>cfa
  dup forward? ABORT" CROSS: forward " >link @ ;
               
>TARGET

: '  ( -- cfa ) 
\ returns the target-cfa of a ghost
  bl word gfind 0= ABORT" CROSS: Ghost don't exists"
  ghost>cfa ;

Cond: [']  T ' H alit, ;Cond

>CROSS

: [T']
\ returns the target-cfa of a ghost, or compiles it as literal
  postpone [G'] state @ IF postpone ghost>cfa ELSE ghost>cfa THEN ; immediate

\ \ threading modell					13dec92py
\ modularized						14jun97jaw
1224

jwilke's avatar
jwilke committed
1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
: fillcfa   ( usedcells -- )
  T cells H xt>body swap - 0 ?DO 0 T c, H LOOP ;

: (>body)   ( cfa -- pfa ) xt>body + ;		' (>body) T IS >body H

: (doer,)   ( ghost -- ) ]comp gexecute comp[ 1 fillcfa ;   ' (doer,) IS doer,

: (docol,)  ( -- ) [G'] :docol doer, ;		' (docol,) IS docol,

: (doprim,) ( -- )
  there xt>body + ca>native T a, H 1 fillcfa ;	' (doprim,) IS doprim,

: (doeshandler,) ( -- ) 
  T cfalign H compile :doesjump T 0 , H ; 	' (doeshandler,) IS doeshandler,

: (dodoes,) ( does-action-ghost -- )
  ]comp [G'] :dodoes gexecute comp[
  addr,
  T here H tcell - reloff 2 fillcfa ;		' (dodoes,) IS dodoes,

: (lit,) ( n -- )   compile lit T  ,  H ;	' (lit,) IS lit,

: (alit,) ( n -- )  lit, T here cell - H relon ;	' (alit,) IS alit,

: (fini,)         compile ;s ;                ' (fini,) IS fini,
1250

pazsan's avatar
pazsan committed
1251 1252 1253 1254 1255
[IFUNDEF] (code) 
Defer (code)
Defer (end-code)
[THEN]

anton's avatar
anton committed
1256
>TARGET
pazsan's avatar
pazsan committed
1257
: Code
jwilke's avatar
jwilke committed
1258
  defempty?
anton's avatar
anton committed
1259
  (THeader there resolve
jwilke's avatar
jwilke committed
1260
  [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
jwilke's avatar
jwilke committed
1261
  doprim, 
anton's avatar
anton committed
1262 1263
  [THEN]
  depth (code) ;
pazsan's avatar
pazsan committed
1264 1265

: Code:
jwilke's avatar
jwilke committed
1266
  defempty?
anton's avatar
anton committed
1267
    ghost dup there ca>native resolve  <do:> swap >magic !
pazsan's avatar
pazsan committed
1268 1269 1270
    depth (code) ;

: end-code
jwilke's avatar
jwilke committed
1271
    (end-code)
pazsan's avatar
pazsan committed
1272 1273
    depth ?dup IF   1- <> ABORT" CROSS: Stack changed"
    ELSE true ABORT" CROSS: Stack empty" THEN
jwilke's avatar
jwilke committed
1274
    ;
anton's avatar
anton committed
1275

1276
( Cond ) : chars tchar * ; ( Cond )
1277

anton's avatar
anton committed
1278 1279
>CROSS

jwilke's avatar
jwilke committed
1280
\ tLiteral                                             12dec92py
anton's avatar
anton committed
1281 1282

>TARGET
pazsan's avatar
pazsan committed
1283 1284
Cond: \G  T-\G ;Cond

anton's avatar
anton committed
1285 1286 1287 1288 1289 1290
Cond:  Literal ( n -- )   restrict? lit, ;Cond
Cond: ALiteral ( n -- )   restrict? alit, ;Cond

: Char ( "<char>" -- )  bl word char+ c@ ;
Cond: [Char]   ( "<char>" -- )  restrict? Char  lit, ;Cond

pazsan's avatar
pazsan committed
1291 1292
\ some special literals					27jan97jaw

jwilke's avatar
jwilke committed
1293 1294 1295
\ !! Known Bug: Special Literals and plug-ins work only correct
\ on 16 and 32 Bit Targets and 32 Bit Hosts!

pazsan's avatar
pazsan committed
1296
Cond: MAXU
jwilke's avatar
jwilke committed
1297 1298 1299 1300 1301
  restrict? 
  tcell 1 cells u> 
  IF	compile lit tcell 0 ?DO FF T c, H LOOP 
  ELSE	$ffffffff lit, THEN
  ;Cond
pazsan's avatar
pazsan committed
1302 1303

Cond: MINI
jwilke's avatar
jwilke committed
1304 1305 1306 1307 1308 1309 1310 1311
  restrict?
  tcell 1 cells u>
  IF	compile lit bigendian 
  	IF	80 T c, H tcell 1 ?DO 0 T c, H LOOP 
  	ELSE  	tcell 1 ?DO 0 T c, H LOOP 80 T c, H
  	THEN
  ELSE	tcell 2 = IF $8000 ELSE $80000000 THEN lit, THEN
  ;Cond
pazsan's avatar
pazsan committed
1312 1313
 
Cond: MAXI
jwilke's avatar
jwilke committed
1314 1315 1316 1317 1318 1319 1320
 restrict?
 tcell 1 cells u>
 IF	compile lit bigendian 
	IF 	7F T c, H tcell 1 ?DO FF T c, H LOOP
	ELSE 	tcell 1 ?DO FF T c, H LOOP 7F T c, H
 	THEN
 ELSE	tcell 2 = IF $7fff ELSE $7fffffff THEN lit, THEN
pazsan's avatar
pazsan committed
1321 1322
 ;Cond

anton's avatar
anton committed
1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340
>CROSS
\ Target compiling loop                                12dec92py
\ ">tib trick thrown out                               10may93jaw
\ number? defined at the top                           11may93jaw

\ compiled word might leave items on stack!
: tcom ( in name -- )
  gfind  ?dup  IF    0> IF    nip >exec @ execute
                        ELSE  nip gexecute  THEN EXIT THEN
  number? dup  IF    0> IF swap lit,  THEN  lit,  drop
               ELSE  2drop >in !
               ghost gexecute THEN  ;

>TARGET
\ : ; DOES>                                            13dec92py
\ ]                                                     9may93py/jaw

: ] state on
pazsan's avatar
pazsan committed
1341
    Compiling comp-state !
anton's avatar
anton committed
1342
    BEGIN
pazsan's avatar
pazsan committed
1343
        BEGIN >in @ bl word
anton's avatar
anton committed
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355
              dup c@ 0= WHILE 2drop refill 0=
              ABORT" CROSS: End of file while target compiling"
        REPEAT
        tcom
        state @
        0=
    UNTIL ;

\ by the way: defining a second interpreter (a compiler-)loop
\             is not allowed if a system should be ans conform

: : ( -- colon-sys ) \ Name
jwilke's avatar
jwilke committed
1356 1357 1358
  defempty?
  constflag off \ don't let this flag work over colon defs
		\ just to go sure nothing unwanted happens
pazsan's avatar
pazsan committed
1359
  >in @ skip? IF  drop skip-defs  EXIT  THEN  >in !
anton's avatar
anton committed
1360
  (THeader ;Resolve ! there ;Resolve cell+ !
jwilke's avatar
jwilke committed
1361
  docol, ]comp depth T ] H ;
anton's avatar
anton committed
1362

1363
: :noname ( -- colon-sys )
jwilke's avatar
jwilke committed
1364
  T cfalign H there docol, 0 ;Resolve ! depth T ] H ;
1365

pazsan's avatar
pazsan committed
1366 1367
Cond: EXIT ( -- )  restrict?  compile ;S  ;Cond

1368 1369
Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond

jwilke's avatar
jwilke committed
1370 1371 1372 1373 1374 1375 1376 1377
>CROSS
: LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
         ;Resolve cell+ @ ;

>TARGET

Cond: recurse ( -- ) Last-Ghost @ gexecute ;Cond

anton's avatar
anton committed
1378 1379 1380
Cond: ; ( -- ) restrict?
               depth ?dup IF   1- <> ABORT" CROSS: Stack changed"
                          ELSE true ABORT" CROSS: Stack empty" THEN
jwilke's avatar
jwilke committed
1381 1382 1383
               fini,
               comp[
               state off
anton's avatar
anton committed
1384 1385
               ;Resolve @
               IF ;Resolve @ ;Resolve cell+ @ resolve THEN
pazsan's avatar
pazsan committed
1386
		Interpreting comp-state !
anton's avatar
anton committed
1387
               ;Cond
pazsan's avatar
pazsan committed
1388
Cond: [  restrict? state off Interpreting comp-state ! ;Cond
anton's avatar
anton committed
1389 1390

>CROSS
pazsan's avatar
pazsan committed
1391 1392 1393 1394

Create GhostDummy ghostheader
<res> GhostDummy >magic !

jwilke's avatar
jwilke committed
1395 1396
: !does ( does-action -- )
\ !! zusammenziehen und dodoes, machen!
pazsan's avatar
pazsan committed
1397 1398
    tlastcfa @ [G'] :dovar killref
\    tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
jwilke's avatar
jwilke committed
1399
\ !! geht so nicht, da dodoes, ghost will!
pazsan's avatar
pazsan committed
1400 1401
    GhostDummy >link ! GhostDummy 
    tlastcfa @ >tempdp dodoes, tempdp> ;
anton's avatar
anton committed
1402 1403 1404

>TARGET
Cond: DOES> restrict?
jwilke's avatar
jwilke committed
1405 1406 1407
        compile (does>) doeshandler, 
	\ resolve words made by builders
	tdoes @ ?dup IF  @ T here H resolve THEN
anton's avatar
anton committed
1408
        ;Cond
jwilke's avatar
jwilke committed
1409
: DOES> switchrom doeshandler, T here H !does depth T ] H ;
anton's avatar
anton committed
1410 1411 1412 1413 1414 1415

>CROSS
\ Creation                                             01nov92py

\ Builder                                               11may93jaw

jwilke's avatar
jwilke committed
1416 1417 1418 1419 1420 1421
: Builder    ( Create-xt do:-xt "name" -- )
\ builds up a builder in current vocabulary
\ create-xt is executed when word is interpreted
\ do:-xt is executet when the created word from builder is executed
\ for do:-xt an additional entry after the normal ghost-enrys is used

anton's avatar
anton committed
1422
  >in @ alias2 swap dup >in ! >r >r
pazsan's avatar
pazsan committed
1423 1424 1425 1426
  Make-Ghost 
  rot swap >exec dup @ ['] NoExec <>
  IF 2drop ELSE ! THEN
  ,
anton's avatar
anton committed
1427
  r> r> >in !
1428 1429
  also ghosts ' previous swap ! ;
\  DOES>  dup >exec @ execute ;
anton's avatar
anton committed
1430

jwilke's avatar
jwilke committed
1431 1432 1433 1434
: gdoes,  ( ghost -- )
\ makes the codefield for a word that is built
  >end @ dup forward? 0=
  IF
1435
	dup >magic @ <do:> =
pazsan's avatar
pazsan committed
1436 1437 1438 1439
	IF 	 doer, 
	ELSE	dodoes,
	THEN
	EXIT
jwilke's avatar
jwilke committed
1440 1441 1442
  THEN
\  compile :dodoes gexecute
\  T here H tcell - reloff 
pazsan's avatar
pazsan committed
1443 1444 1445
  2 refered 
  0 fillcfa
  ;
anton's avatar
anton committed
1446

jwilke's avatar
jwilke committed
1447 1448
: TCreate ( <name> -- )
  executed-ghost @
anton's avatar
anton committed
1449
  CreateFlag on
jwilke's avatar
jwilke committed
1450 1451
  create-forward-warn
  IF ['] reswarn-forward IS resolve-warning THEN
1452
  Theader >r dup gdoes,
jwilke's avatar
jwilke committed
1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469
\ stores execution symantic in the built word
  >end @ >exec @ r> >exec ! ;

: RTCreate ( <name> -- )
\ creates a new word with code-field in ram
  executed-ghost @
  CreateFlag on
  create-forward-warn
  IF ['] reswarn-forward IS resolve-warning THEN
  \ make Alias
  (THeader there 0 T a, H 80 flag! ( S executed-ghost new-ghost )
  \ store  poiter to code-field
  switchram T cfalign H
  there swap T ! H
  there tlastcfa ! 
  dup there resolve 0 ;Resolve !
  >r dup gdoes,
1470
  >end @ >exec @ r> >exec ! ;
anton's avatar
anton committed
1471 1472

: Build:  ( -- [xt] [colon-sys] )
jwilke's avatar
jwilke committed
1473 1474 1475 1476
  :noname postpone TCreate ;

: BuildSmart:  ( -- [xt] [colon-sys] )
  :noname
jwilke's avatar
jwilke committed
1477
  [ T has? rom H [IF] ]
jwilke's avatar
jwilke committed
1478 1479 1480 1481
  postpone RTCreate
  [ [ELSE] ]
  postpone TCreate 
  [ [THEN] ] ;
anton's avatar
anton committed
1482 1483

: gdoes>  ( ghost -- addr flag )
jwilke's avatar
jwilke committed
1484
  executed-ghost @
anton's avatar
anton committed
1485
  state @ IF  gexecute true EXIT  THEN
jwilke's avatar
jwilke committed
1486
  >link @ T >body H false ;
anton's avatar
anton committed
1487 1488 1489 1490 1491 1492

\ DO: ;DO                                               11may93jaw
\ changed to ?EXIT                                      10may93jaw

: DO:     ( -- addr [xt] [colon-sys] )
  here ghostheader
1493
  :noname postpone gdoes> postpone ?EXIT ;
anton's avatar
anton committed
1494

1495 1496 1497 1498
: by:     ( -- addr [xt] [colon-sys] ) \ name
  ghost
  :noname postpone gdoes> postpone ?EXIT ;

jwilke's avatar
jwilke committed
1499
: ;DO ( addr [xt] [colon-sys] -- addr )
anton's avatar
anton committed
1500 1501 1502 1503 1504 1505 1506 1507 1508
  postpone ;    ( S addr xt )
  over >exec ! ; immediate

: by      ( -- addr ) \ Name
  ghost >end @ ;

>TARGET
\ Variables and Constants                              05dec92py

jwilke's avatar
jwilke committed
1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525
Build:  ( n -- ) ;
by: :docon ( ghost -- n ) T @ H ;DO
Builder (Constant)

Build:  ( n -- ) T , H ;
by (Constant)
Builder Constant

Build:  ( n -- ) T A, H ;
by (Constant)
Builder AConstant

Build:  ( d -- ) T , , H ;
DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
Builder 2Constant

BuildSmart: ;
1526
by: :dovar ( ghost -- addr ) ;DO
anton's avatar
anton committed
1527 1528
Builder Create

jwilke's avatar
jwilke committed
1529
T has? rom H [IF]
pazsan's avatar
pazsan committed
1530
Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;