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collapseos/blk/091

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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 21:09:11 +10:00
Stable ABI
Across all architectures, some offset are referred to by off-
sets that don't change (well, not without some binary manipu-
lation). Here's the complete list of these references:
04 BOOT addr 06 (uflw) addr 08 LATEST
z80/8086: extract 2>R code from stable ABI zone Only its jump at 0x33 remains. I've also fixed a strange offset oddity in 8086's (n) placement. It was off by 2, but strangely, it ran properly. Anyway, now it's fixed.
2020-07-05 22:03:15 +10:00
33 2>R wordref 42 EXIT wordref 53 (br) wordref
67 (?br) wordref 80 (loop) wordref bf (n) wordref
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 21:09:11 +10:00
d4 (s) wordref
BOOT and (uflw) exist because they are referred to before those
words are defined (in core words). LATEST is a critical part
of the initialization sequence.
(cont.)