Robert Allan JamesandClaude Sonnet 5
d55ec3241b
Punch list §25 item 3.1 complete. Defines StadiumPatronHeader and StadiumContinuationCell in new include/starkernel/vm/stadium.h, unioned as StadiumCell per §3's closed two-valued union. src/starkernel/vm/stadium.c added to Makefile.starkernel's LOADER_EXTRA_SRCS/KERNEL_EXTRA_SRCS so the header's compile-time size checks are actually compiled, not merely included by something that never builds. Discriminator ruled an external side bitmap (Captain Bob), not a header field -- amended into §3 and §23.3 before this code was written. Item 3.1 declares the bitmap's purpose/indexing in a comment only; allocating it is item 3.2's scope. Both cell shapes counted for real at exactly 64 bytes with zero compiler-inserted padding (three C99-portable negative-array-size assertions -- no _Static_assert, this project targets C99). Header matches §23.3's original 32+32 split unchanged, since the discriminator moving outside the cell left nothing to compete for that space. Continuation cell matches item 1.12's 4+60 figure unchanged for the same reason. Verified the size assertion is actually live: broke it to 63, confirmed the build failed with the expected negative-array-size error, restored it, confirmed a clean compile. Verified: three-architecture boot (amd64, aarch64, riscv64), all reaching ok> with identical dict_hash=0x3d4e1daf289da94f matching the item-2.2 baseline. Confirmed stadium.o present in both obj/loader/vm and obj/kernel/vm post-build on amd64, closing the gap the item-2.2 WIP exposed (an uncompiled header proves nothing). Left open, not fabricated: §23.4 #2 ("does a typical message fit in one cell") is unanswerable today -- no message patron struct exists anywhere in this tree yet. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
src/starkernel/vm/
Kernel-side StarForth VM subsystem.
vm_core.c— kernel port of the core interpreter loop.vm_runtime.c— kernel VM runtime support.vm_bootstrap.c— kernel VM bootstrap (distinct frombootstrap/sk_vm_bootstrap.c, which owns the higher-level subsystem wiring called fromkernel_main.c).arena.c— capsule arena allocator (fixed-region allocation for capsule payload data).parity.c— birth/execution parity logging (VM ID + capsule hash + dictionary hash), enabling offline determinism verification.alloc_kernel.c— the kernel-side implementation of the VM's allocator interface actually referenced byMakefile.starkernel's build (seesrc/platform/README.mdfor a note on a second, unwired copy).q48_stubs.c— deliberate no-op stubs forq48_from_double()/q48_to_double()in the freestanding kernel build, where floating point is unavailable; always returns zero, safe because shared VM code only uses these results for logging/diagnostic paths that are inactive in the kernel build.vm_internal.h— internal-only declarations shared across this directory's files.
Subdirectories:
bootstrap/sk_vm_bootstrap.c— owns VM init + capsule loading wiring, called fromkernel_main.c;kernel_main.citself only owns hardware milestones.host/shim.c— host-service shim bridging the kernel VM tosrc/starkernel/hal/host_services.c.