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mirror of https://github.com/hsoft/collapseos.git synced 2024-12-24 14:18:06 +11:00

Improve late-stage xcomp

This commit is contained in:
Virgil Dupras 2020-05-14 09:45:42 -04:00
parent 179c66be8a
commit 4143e2a699
4 changed files with 18 additions and 26 deletions

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@ -1,14 +1,13 @@
VARIABLE XCURRENT
: XCON XCURRENT CURRENT* ! ;
: XCOFF 0x02 RAM+ CURRENT* ! ;
: (xentry) XCON (entry) XCOFF ;
: XCREATE (xentry) 11 C, ;
: XCODE XCON CODE XCOFF ;
: XIMM XCON IMMEDIATE XCOFF ;
: _xapply ( a -- a-off )
DUP ORG @ > IF ORG @ - BIN( @ + THEN ;
: X' XCON ' XCOFF ;
: X['] XCON ' _xapply LITA XCOFF ;
: XCOMPILE
XCON ' _xapply LITA

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@ -3,11 +3,11 @@
: LOOP COMPILE (loop) H@ - , ; IMMEDIATE
( LEAVE is implemented in low xcomp )
: LITN 32 , , ( 32 == NUMBER ) ;
( ';' can't have its name right away because, when created, it
is not an IMMEDIATE yet and will not be treated properly by
xcomp. )
: _
['] EXIT ,
R> DROP ( exit : )
; IMMEDIATE
: _ ( : will get its name at the very end )
(entry)
[ 14 ( == compiledWord ) LITN ] C,
BEGIN
WORD (find)
IF ( is word ) DUP IMMED? IF EXECUTE ELSE , THEN
ELSE ( maybe number ) (parse) LITN THEN
AGAIN ;

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@ -1,16 +1,9 @@
XCURRENT @ ( to PSP )
: :
(entry)
( We cannot use LITN as IMMEDIATE because of bootstrapping
issues. Same thing for ",".
32 == NUMBER 14 == compiledWord )
[ 32 H@ ! 2 ALLOT 14 H@ ! 2 ALLOT ] C,
BEGIN
WORD
(find)
( is word )
IF DUP IMMED? IF EXECUTE ELSE , THEN
( maybe number )
ELSE (parse) LITN THEN
AGAIN ;
( from PSP ) ';' SWAP 4 - C!
( ';' can't have its name right away because, when created, it
is not an IMMEDIATE yet and will not be treated properly by
xcomp. )
: _
['] EXIT ,
R> DROP ( exit : )
; IMMEDIATE
';' XCURRENT @ 4 - C!
':' X' _ 4 - C! ( give : its name )

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