Robert Allan JamesandClaude Sonnet 5
b301317902
Two independent bugs that together caused a reliable hotplug wedge: reusing an xHCI port for a second identity right after an unclean detach of a first would leave no further hotplug events reaching the guest at all. Bug 1 (xhci.c/xhci_driver.h): the xHCI driver never drove PORTSC.PR -- a known, named gap since Milestone 2e (the code's own comment flagged it, PORTSC_PR/PRC were defined but never referenced). A port's first connect each boot reads PED already set, so skipping the reset happened to work; a second device on the same port after a prior disconnect reads PED clear, and Address Device reliably failed without an explicit reset cycle. New XHCI_CONN_AWAIT_PORT_RESET state drives PR and waits for PED to read set before proceeding to Enable Slot. Bug 2 (capsule_wirebind.c): capsule_wirebind_eject()/unclean_detach() compared g_repl_active_vm against the *user* VM's pointer (g_wirebind_attached_vm_id tracks that one, not the console VM) -- never equal, since USE/g_repl_active_vm always points at the console VM. The guard never fired and the console VM was never killed at all, only orphaned -- paired to a dead user VM but still the REPL's active session. New wirebind_teardown_console() helper resolves and tears down the console VM by its own tracked bare username. Verified live on amd64: the exact repro (identity 01 on port 2, unclean detach, identity 02 on the same port immediately after) -- previously wedged with "xhci: address device failed" and no further hotplug activity; now attaches cleanly and fast, both VMs' KILL messages appear, console is immediately interactive on the new identity. Three-arch clean qemu acceptance passed, all clean on the first attempt. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014Ec88YKxxhZGG1RNnune78
src/
Hosted StarForth VM implementation (compiled by the root Makefile).
Bare-metal kernel sources live in src/starkernel/; FORTH word
implementations in src/word_source/; the test harness in
src/test_runner/; platform shims in src/platform/.
Entry point / interpreter core
main.c— CLI entry point, VM init, DoE mode dispatch.vm.c— interpreter loop, stacks, dictionary state (the central runtime file).vm_api.c— external VM API implementation.vm_bootstrap.c— VM bootstrap initialization.vm_debug.c— debugging utilities.vm_time.c— time-related VM operations.vm_internal.h— internal-only declarations shared across thevm_*.cfiles, not part of the publicinclude/vm_api.hsurface.repl.c— REPL read-eval-print loop.cli.c— CLI argument parsing.io.c— I/O operations.log.c— logging infrastructure.
Memory / dictionary / blocks
memory_management.c— dictionary allocator.dictionary_management.c— dictionary allocation and search.dictionary_heat_optimization.c— Loop #1 execution-heat tracking.word_registry.c— word registration system.block_subsystem.c— logical→physical block mapper.blkio_file.c,blkio_ram.c,blkio_factory.c— block I/O backends (file-backed, RAM-backed) and the factory that selects between them.stack_management.c— stack operations.
Physics-driven adaptive runtime (7 feedback loops)
physics_runtime.c— main physics coordinator.physics_hotwords_cache.c— Loop #1 hot-words caching.physics_metadata.c— per-word metadata tracking.physics_pipelining_metrics.c— Loop #4 word-transition prediction.physics_execution_hooks.c— execution instrumentation.rolling_window_of_truth.c— Loop #2 circular execution-history buffer.inference_engine.c— Loops #5/#6, statistical inference (window-width, decay-slope).ssm_jacquard.c— L8 Jacquard steady-state mode selector; consumescompudynamics.cfor tuning-word/config lookups.compudynamics.c— generic compudynamics module (cd_tuning_word(),cd_tuning_vm()); the score/UCB/reward/weight constants for the L8 adaptive table live here, not inssm_jacquard.c.heartbeat_export.c— heartbeat metrics export (CSV export function itself not yet implemented — seedocs/working/architecture/heartbeat_csv_export.md).
Math / measurement
math_portable.c— portable math functions.profiler.c— performance profiling.doe_metrics.c— Design of Experiments metrics (2^7 factorial).
Any .bak file alongside a .c file here (doe_metrics.c.bak,
inference_engine.c.bak, vm.c.bak) is a pre-edit backup left by a past
maintenance script (see scripts/remove_loop_conditionals.sh), not a
build input.