1
0
mirror of https://github.com/hsoft/collapseos.git synced 2024-11-23 23:08:06 +11:00
collapseos/blk/397
Virgil Dupras 94cb76520a Refer to stable wordref by direct offset in "hot zone" immediates
Previously, it was impossible to cross-compile Collapse OS from a
binary-offsetted Collapse OS because stable ABI wordrefs would have
a wrongly offsetted address.

This solves the problem by replacing those wordrefs by direct,
hardcoded stable ABI offset references.
2020-07-05 07:09:11 -04:00

16 lines
600 B
Plaintext

( Now we have "as late as possible" stuff. See B70 and B270. )
: _bchk DUP 0x7f + 0xff > IF LIT< br-ovfl (print) ABORT THEN ;
: DO 0xa9 ( 2>R ) , H@ ; IMMEDIATE
: LOOP 0x80 ( loop ) , H@ - _bchk , ; IMMEDIATE
( LEAVE is implemented in low xcomp )
: LITN 0xbf ( n ) , , ;
( gets its name at the very end. can't comment afterwards )
: _ BEGIN LIT< ) WORD S= UNTIL ; IMMEDIATE
: _ ( : will get its name almost at the very end )
(entry) 1 ( compiled ) C,
BEGIN
WORD FIND
IF ( is word ) DUP IMMED? IF EXECUTE ELSE , THEN
ELSE ( maybe number ) (parse) LITN THEN
AGAIN ;