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forth: Forth-ify "(entry)"

This commit is contained in:
Virgil Dupras 2020-03-27 16:52:42 -04:00
parent 799ea72974
commit 49101915fb
3 changed files with 18 additions and 40 deletions

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@ -1063,50 +1063,13 @@ PARSED:
jp next
.fill 51
; Spit name (in (HL)) + prev in (HERE) and adjust (HERE) and (CURRENT)
; HL points to new (HERE)
.db "(entry)"
.dw $-PARSED
.db 7
ENTRYHEAD:
.dw compiledWord
.dw WORD
.dw .private
.dw EXIT
.private:
.dw nativeWord
pop hl
ld de, (HERE)
call strcpy
; DE point to char after null, rewind.
dec de
; B counts the null, adjust
dec b
ld a, b
ex de, hl ; HL points to new HERE
ld de, (CURRENT)
push hl ; --> lvl 1
or a ; clear carry
sbc hl, de
ex de, hl
pop hl ; <-- lvl 1
call DEinHL
; Save size
ld (hl), b
inc hl
ld (CURRENT), hl
ld (HERE), hl
jp next
.fill 107
; STABLE ABI (every sysvars)
; Offset: 05ca
.out $
.db "HERE"
.dw $-ENTRYHEAD
.dw $-PARSED
.db 4
HERE_: ; Caution: conflicts with actual variable name
.dw sysvarWord

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@ -81,12 +81,27 @@
AGAIN
;
: (entry)
HERE @ ( h )
WORD ( h s )
SCPY ( h )
( Adjust HERE -1 because SCPY copies the null )
HERE @ 1 _c - ( h h' )
DUP HERE ! ( h h' )
SWAP _c - ( sz )
( write prev value )
HERE @ CURRENT @ _c - ,
( write size )
C,
HERE @ CURRENT !
;
( : and ; have to be defined last because it can't be
executed now also, they can't have their real name
right away )
: X
(entry)
_c (entry)
( JUMPTBL+0 == compiledWord )
[ ROUTINE J LITN ] ,
BEGIN