collapseos/blk/091

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
42 EXIT wordref      53 (br) wordref     67 (?br) wordref
80 (loop) wordref    a9 2>R wordref      bf (n) wordref
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.)
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`
			`42 EXIT wordref 53 (br) wordref 67 (?br) wordref`
			`80 (loop) wordref a9 2>R wordref bf (n) wordref`
			`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.)`