Robert Allan JamesandClaude Sonnet 5
2b1ba031a5
sk_hermes_drain_checkpoint() interprets one queued payload per checkpoint (ruled: one message per checkpoint), reusing sk_vm_at_outermost_interpret() and placed before the switch-signal block in vm_core.c's existing cooperative checkpoint (sk_vm_context_switch() doesn't return until switched back to, so drain must come first or it silently never runs on a switching checkpoint). Amends FABRIC-3.5.md SXLIII.5, caught by advisor() before writing the naive version: "recursive drain is prevented for free" via g_vm_interpret_depth is true but only for same-message re-drain -- it doesn't cover the separate same-VM reentrancy hazard FABRIC-3.md SXX already named for Hera specifically (VMCallState saves rsp/exit_colon/ ecw_nesting only, never input_buffer/input_length/input_pos). Draining calls vm_interpret() on the same vm whose own vm_interpret() call is still paused mid-word at the checkpoint; without saving and restoring the cursor by hand, the enclosing REPL line or LOAD block would be silently truncated. sk_hermes_drain_checkpoint() snapshots and restores input_buffer/input_length/input_pos/mode/error/abort_requested around the call. Not a divergence from the ruling -- cursor preservation is the implementer's own obligation inside the ruled mechanism. Gated behind a system-wide pending-total counter so the common no-message-in-flight case costs one integer read per word dispatch, not a stadium_max_vm_count()-sized queue scan (also flagged by advisor() as a real hot-path cost, not deferred). Verified live on all three architectures: a self-test publishes a real payload to Hermes, proves the depth gate via VM-EXEC-ing an existing harmless colon word into Hermes (genuine nested vm_interpret(), depth 2, must not drain), then drains directly from genuinely-outermost context and confirms exactly one clean drain. dict_hash unmoved and identical across architectures. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
include/starkernel/
Headers for LithosAnanke, the bare-metal UEFI kernel (src/starkernel/).
Built only via Makefile.starkernel; gated by __STARKERNEL__ when shared
with hosted code.
uefi.h— UEFI protocol/type definitions consumed by the loader.elf64.h,elf_loader.h— ELF64 parsing and kernel-image loading.boot_info_offsets.h— struct-offset constants shared between the assembly bootstrap and the C boot path.arch.h,apic.h,timer.h— architecture init, APIC interrupt controller, timer (TSC/HPET/APIC, 100 Hz heartbeat).console.h,framebuffer.h,vt100.h— UART 16550 console, framebuffer driver, and VT100 terminal emulation over the framebuffer.pmm.h,vmm.h,kmalloc.h— physical memory manager (bitmap allocator), 4-level x86_64 paging, kernel heap allocator.pci.h,virtio_blk.h— PCI enumeration and the VirtIO block device driver (disk backend for the kernel block subsystem).capsule.h,capsule_birth.h,capsule_loader.h,capsule_run.h,capsule_vm_physics.h,capsule_generated.h— capsule system types, birth protocol, physics-runtime capsule bindings, and the build-time- generated capsule directory (seetools/mkcapsule.c).kernel_args.h,cmdline.h— boot-time kernel argument parsing (starforth.cfg/ command line).repl.h— kernel REPL.log.h,doe_log.h— kernel logging and DoE metrics logging.q48_16.h— kernel-build copy of Q48.16 fixed-point arithmetic.xxhash64.h— content-addressing hash used for capsule IDs.hal_memory.h— hardware-abstraction-layer memory interface.
Subdirectories:
hal/— top-level hardware-abstraction-layer interface.vm/— kernel VM subsystem headers (capsule arena, parity logging, bootstrap wiring).freestanding/— minimal libc-shim headers (assert.h,ctype.h,errno.h,inttypes.h,math.h,sched.h,signal.h,stdio.h,stdlib.h,string.h,time.h,sys/time.h,sys/types.h) for building shared VM code in the freestanding kernel environment, where no real libc is available.