Finding 2 (putc/getc) fixed via shim.c backfill (previous commit). With both Finding 1 (-U_FORTIFY_SOURCE) and Finding 2 fixed, amd64 links clean at -O2 -- rigorously confirmed zero new warnings by diffing normalized warning text between -O0 and -O2 builds (empty diff, ~3040 pre-existing warnings in vendored code unchanged). New Finding 3, not fixed, now blocking: amd64 boot stalls for minutes inside calibrate_tsc_with_pmtimer() (timer.c:560-589) at -O2 -- a mainline busy-wait loop reading the ACPI PM Timer via genuinely-volatile inl() until 1000 real ticks elapse, bounded by a 5M-iteration timeout. A one-shot diagnostic probe (reverted after capture) caught exactly one checkpoint in 55 seconds of observation, then nothing -- not yet root-caused whether this is the 5M-iteration timeout itself taking several minutes to exhaust under -O2, or a genuine non-terminating condition. Makefile.starkernel reverted to -O0 again; nothing broken landed in history. Routine artifacts from this session's boot attempts included. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
capsules/
FORTH personality files loaded by the VM at boot. A capsule is an immutable, content-addressed payload; its XXHash64 hash is its identity. Any mutation changes the hash and the birth protocol rejects the image.
Key files
| File | Type | Purpose |
|---|---|---|
init.4th |
(m) MAMA_INIT |
Default Mama VM personality — loaded at LBN 2048 |
ACL.4th |
user | Word-level ACL system; self-activating at boot |
zuse.4th |
user | Bootstrap superuser; loaded by ACL.4th |
doe.4th |
user | DoE workload words (EXEC-DOE) — opt-in |
init-0.4th … init-9.4th |
(p) |
Numbered personality variants |
init-l8-*.4th |
(p) |
L8 Jacquard mode variants (stable/volatile/diverse/temporal/transition/omni) |
hermes/init.4th |
(p) |
Hermes baby VM personality |
artemis/init.4th |
(p) |
Artemis baby VM personality |
Block namespace
Block ranges are shared across all loaded capsules — collisions cause silent word-definition overwrites.
| Range | Owner |
|---|---|
| 2048–2099 | init.4th |
| 2100–2199 | doe.4th |
| 3000–3999 | workload capsules |
| 4000+ | user-defined (ACL.4th, zuse.4th, …) |
Each block is limited to 1024 bytes. Verify with wc -c before committing.
See also
experiments/bare_metal/README.md— DoE protocols and block namespace rulesdocs/03-architecture/word-acl/DESIGN.md— ACL system designtools/mkcapsule.c— assembles capsules intocapsule_generated.c- Project root