cnc_wams/wasm-port/docs/source-reuse-map.md

Source Reuse Map

Purpose

This map records which LinuxCNC source files are currently vendored into the standalone WASM port, why they are present, which standalone boundary they touch, and how the port verifies that they still come directly from upstream LinuxCNC.

The authoritative extraction list is tools/source-manifest.txt. The upstream baseline is recorded in tools/upstream-baseline.txt and docs/scope-and-baseline.md.

Validation Contract

Current validation is intentionally mechanical:

• tools/verify_upstream_baseline.sh checks that ../linuxcnc is at the recorded upstream commit.
• tools/verify_vendor_sync.sh checks that every manifest file exists in vendor/linuxcnc/, that no extra vendored file exists, and that each vendored file is byte-identical to the matching upstream file.
• tools/build_native_probes.sh builds source-level native compile probes for every .c and .cc file in the manifest.
• tests/native/verify_native_probes.sh checks that every manifest .c and .cc file has a matching source probe in build/native/source-probes.tsv.
• tools/verify_no_standalone_cnc_semantics.sh rejects standalone Interp::... member definitions outside vendor/linuxcnc/, except for the documented Python/remap runtime-edge stubs in runtime/core/linuxcnc_wrap/linuxcnc_interp_edge_stubs.cpp.

The project-level release handoff in docs/project-release-handoff.md links this source reuse map to the README, panel entry documentation, SDK surface, OPFS/session release gate, sim-config coverage gate, host/runtime blocked families, and drift report.

Reuse Matrix

Capability	LinuxCNC source files	Port classification	Standalone boundary	Current validation
INI parsing	src/emc/ini/inifile.cc, inifile.h, inifile.hh	Copy unchanged	Native file IO remains LinuxCNC-style in the vendored parser; browser OPFS integration remains outside this layer; runtime/sdk/src/index.js exports the INI SDK wrapper around the generated WASM C ABI, including LinuxCNC iniFindBool() for machine-session flags and LinuxCNC string lookup for INI-declared [RS274NGC]PARAMETER_FILE and [EMCIO]TOOL_TABLE machine file names	Vendor byte sync, linuxcnc_ini_probe, linuxcnc_inifile_source_probe, tests/wasm/node/verify_ini_wasm.sh boolean plus file-name lookup assertions, tests/browser/verify_ini_panel_browser.sh, tests/host/verify_host_smokes.sh
RTAPI compatibility headers	src/rtapi/rtapi_*.h in the manifest	Copy unchanged plus standalone shim include path	runtime/core/shims/rtapi.h supplies the minimal standalone RTAPI surface needed by vendored code	Vendor byte sync, compile coverage through dependent source probes
Canon/NML-facing interpreter types	src/emc/nml_intf/canon*.hh, emctool.h, interp_return.hh, motion_types.h, emcpose.*, emcpos.h, debugflags.h, src/emc/linuxcnc.h	Copy unchanged plus narrow standalone status shim	NML transport is not ported; runtime/core/shims/nml_intf/emc.hh exposes only the emcStatus machine-units status edge currently needed by vendored interpreter conversion and initialization code	Vendor byte sync, dependent source probes, linuxcnc_emc_status_probe, linuxcnc_tp_api_probe, interpreter harnesses, tests/wasm/node/verify_interp_wasm.sh and tests/browser/verify_interp_browser.sh Interp::init() machine-unit assertions
Motion state headers	src/emc/motion/state_tag.h, emcmotcfg.h, simple_tp.h, motion.h, mot_priv.h, axis.h	Copy unchanged	Realtime motion process is not ported; standalone probes seed the small motion status/config state required by TP calls	Vendor byte sync, linuxcnc_tp_api_probe, tests/wasm/node/verify_tp_wasm.sh
Native task / motion / HAL sync phase 0 references	tools/task-hal-source-manifest.txt lists src/emc/task/*, selected src/emc/motion/*, src/hal/*, src/emc/nml_intf/emc.hh, and src/libnml/posemath/*	Reference proof for task/motion/HAL Web simulation runtime	tools/verify_task_hal_source_manifest.sh compares the local LinuxCNC reference tree and vendored tree where present, emits task/HAL/motion/NML/libnml counts. tests/native/probe_trt_task_hal_runtime.sh is opt-in for exclusive host LinuxCNC runtime probing and does not promote by default; Web simulation validation is handled by task/HAL WASM and browser gates while readiness remains false.	tests/native/verify_task_hal_phase0.sh
HAL runtime phase 2 minimal boundary	src/hal/hal_lib.c, src/hal/hal_priv.h, src/hal/components/threads.c, src/hal/utils/halcmd_commands.cc as source references; runtime/core/shims/hal.h type boundary	Runtime-edge adapter, not full native HAL promotion	runtime/core/linuxcnc_wrap/linuxcnc_hal_runtime.cpp owns C/C++ HAL pin, signal, param, net, and thread scheduler state behind LinuxCNC-style hal_* APIs and lchal_* C ABI; loadusr is blocked evidence; task runtime and native HAL comparison remain future work	tests/wasm/node/verify_hal_runtime.sh WASM Node smoke; native fallback only when emcc is unavailable
Motion/HAL sync phase 3 minimal boundary	src/emc/motion/motion.h, src/emc/motion/command.c, src/emc/motion/control.c, src/emc/motion/mot_priv.h, src/emc/task/taskintf.cc as source references	Runtime-edge adapter, not full native motion promotion	runtime/core/linuxcnc_wrap/linuxcnc_motion_runtime.c exposes the planned lcmot_* C ABI, accepts LinuxCNC-style motion command JSON, advances deterministic servo cycles, and synchronizes motion.*, axis.*, and joint.* HAL pins through the phase 2 HAL runtime; full LinuxCNC emcmotController() and task/NML queue integration remain future work	tests/wasm/node/verify_motion_hal_sync.sh WASM Node smoke
Task/motion/HAL simulation runtime	src/emc/task/task.hh, src/emc/task/emctask.cc, src/emc/task/emctaskmain.cc, src/emc/task/taskintf.cc, src/emc/task/emccanon.cc, src/emc/nml_intf/emc.hh, and upstream src/emc/nml_intf/emc_nml.hh as an evaluated but not vendored status-container reference	Runtime-edge adapter, not full native task/HAL promotion	runtime/core/linuxcnc_wrap/linuxcnc_task_hal_wasm.cpp exposes the planned lctask_* C ABI, stages files, opens a program, tracks task state/mode/interp/exec status, and routes RUN/PAUSE/RESUME/ABORT/MDI/JOG/HOME through the phase 3 motion command queue. The current WASM simulation path uses narrow emctask.cc, taskintf.cc, and emccanon.cc source-anchored subsets for status update, task-to-motion command envelopes, and canonical straight motion envelopes. T-007 adds StandaloneEmcStatus as the current EMC_STAT-equivalent container for top/task/motion/io required fields; statusSource=StandaloneEmcStatus and emcStatus are written from that centralized status snapshot. T-051 through T-055 close the status JSON contract batches: emcStatus.motion.traj, task current/read/motion line fields, emcStatus.motion.axis[]/joint[], IO aux/tool/coolant shim boundaries, and the dedicated schema gate; T-056 removes legacy task status top-level fields and gates their absence. T-033 adds a narrow taskintf.cc motion bridge for emcMotionInit()/emcMotionUpdate()/emcMotionAbort() over lcmot_*, including lcmot_read_config_snapshot() and lcmot_read_error_message() for config/error reads. T-034 extends the taskintf.cc traj control subset so emcTrajEnable()/emcTrajDisable()/emcTrajAbort()/emcTrajPause()/emcTrajStep()/emcTrajResume()/emcTrajSetMotionId() map to lcmot command/state. T-035 maps emcTrajLinearMove() to structured lcmot_write_linear_move() instead of task-owned linear move JSON on the taskintf path. T-036 maps emcJogIncr()、emcJointHome()、emcJointUnhome() and emcMotionSetAout() to structured lcmot_write_jog_incr()、lcmot_write_joint_home()、lcmot_write_joint_unhome() and lcmot_write_aout(). T-037 maps emcTaskAbort()、emcTaskSetMode() and emcTaskSetState() into the emctask.cc subset so abort/state/mode decisions come from a source-anchored command result while task-cycle command buffering remains intact. T-038 feeds determineMode()、determineState() and emcTaskUpdate() from LcmotStatusSnapshot plus the IO estop/error latch instead of deriving update inputs from task-owned state strings. T-039 maps emcTaskPlanSetWait()、emcTaskPlanIsWait()、emcTaskPlanClearWait()、emcTaskPlanSynch()、emcTaskPlanOpen()、emcTaskPlanClose() and emcTaskPlanReset() into the emctask.cc subset so plan wait/open/synch/reset state is driven by source-anchored plan results over the staged FS boundary. T-040 maps emcTaskPlanRead()、emcTaskPlanExecute()、emcTaskPlanLine()、emcTaskPlanLevel() and emcTaskPlanCommand() into the emctask.cc subset so staged program lines can drive the interp_list/taskintf path without requiring host-provided JSON motion plans. It now has task-cycle motion snapshots, WAITING_FOR_MOTION/queue semantics, motion ERROR and soft-limit injection coverage, and top/task/motion/io DONE/EXEC/ERROR aggregation matching the emctaskmain.cc top-level status order. T-029 deliberately keeps full emc_nml.hh out of the vendor tree and records a phased StandaloneEmcStatus/typedef path while NML transport remains unpromoted. Full emctaskmain.cc/NML/native HAL/native motion process topology is not promoted. task_hal_runtime_promoted=0, nativeTaskReady=false, nativeHalSyncReady=false, and fullLinuxCncProgramExecutionReady=false are the current readiness contract. Hardware drive, host realtime kernel, external user-M process, full tool DB process, and full LinuxCNC program execution remain future work.	tools/verify_task_full_closure.sh; tools/verify_task_status_json_contract.sh; tools/verify_task_standalone_emc_status.sh; tools/verify_task_working_closure.sh; tools/verify_task_hal_readiness_contract.sh; tools/verify_task_emc_nml_reuse_plan.sh; tools/verify_task_source_reuse_drift_docs.sh; tools/verify_task_emctask_state_mode.sh; tools/verify_task_emctask_update_snapshot.sh; tools/verify_task_emctask_plan_open_wait.sh; tools/verify_task_emctask_plan_read_execute.sh; tools/verify_task_taskintf_motion_bridge.sh; tools/verify_task_taskintf_traj_control.sh; tools/verify_task_taskintf_linear_move.sh; tools/verify_task_taskintf_jog_home_switchkins.sh; tests/wasm/node/verify_task_status_json_contract.mjs; tests/wasm/node/verify_task_hal_wasm.sh; tests/wasm/node/verify_task_hal_sdk.sh; web-rtcp-5axis-sim-plan/tests/node/verify_linuxcnc_task_hal_runtime.mjs; browser smoke
Task/motion/HAL simulation runtime T-041 canon state	src/emc/task/emccanon.cc init/finish/unit/getter references	Runtime-edge adapter, not full native canon promotion	T-041 maps INIT_CANON()、ON_RESET()、FINISH()、USE_LENGTH_UNITS()、GET_EXTERNAL_LENGTH_UNITS()、GET_EXTERNAL_ANGLE_UNITS() and GET_EXTERNAL_POSITION*() into the emccanon.cc subset so canonical units, reset/finish counters, and external endpoint state are tracked from motion/config snapshots and surfaced through task status JSON without promoting full interpreter/canon ownership.	tools/verify_task_emccanon_init_finish_unit.sh; tests/wasm/node/verify_task_hal_wasm.sh
Task/motion/HAL simulation runtime T-042 canon straight motion	src/emc/task/emccanon.cc straight traverse/feed references	Runtime-edge adapter, not full native canon promotion	T-042 maps generate_fast_move()、generate_move()、STRAIGHT_TRAVERSE() and STRAIGHT_FEED() into the emccanon.cc subset so canonical straight traverse/feed calls produce EMC_TRAJ_LINEAR_MOVE evidence on the task interp_list path before crossing into the structured taskintf.cc / lcmot_write_linear_move() motion boundary.	tools/verify_task_emccanon_straight_motion.sh; tests/wasm/node/verify_task_hal_wasm.sh
Task/motion/HAL simulation runtime T-043 canon dwell/path-control	src/emc/task/emccanon.cc dwell and term-condition references	Runtime-edge adapter, not full native canon promotion	T-043 maps DWELL() and SET_MOTION_CONTROL_MODE() into the emccanon.cc subset so canonical dwell emits EMC_TRAJ_DELAY evidence and path-control emits EMC_TRAJ_SET_TERM_COND evidence on the task interp_list path without promoting full native canon blending, queue, or NML ownership.	tools/verify_task_emccanon_dwell_path_control.sh; tests/wasm/node/verify_task_hal_wasm.sh
Task/motion/HAL simulation runtime T-044 canon spindle/tool	src/emc/task/emccanon.cc spindle and tool command references	Runtime-edge adapter, not full native canon promotion	T-044 maps SET_SPINDLE_SPEED()、START_SPINDLE_CLOCKWISE()、START_SPINDLE_COUNTERCLOCKWISE()、STOP_SPINDLE_TURNING()、SELECT_TOOL()、CHANGE_TOOL()、CHANGE_TOOL_NUMBER() and RELOAD_TOOLDATA() into the emccanon.cc subset so spindle/tool command envelopes emit EMC_SPINDLE_* and EMC_TOOL_* / interp_list evidence without promoting full native spindle control, tool DB ownership, IO, or NML transport.	tools/verify_task_emccanon_spindle_tool.sh; tests/wasm/node/verify_task_hal_wasm.sh
Task/motion/HAL simulation runtime T-045 canon motion output/switchkins	src/emc/task/emccanon.cc motion output and wait references	Runtime-edge adapter, not full native canon promotion	T-045 maps SET_MOTION_OUTPUT_BIT()、CLEAR_MOTION_OUTPUT_BIT()、SET_AUX_OUTPUT_BIT()、CLEAR_AUX_OUTPUT_BIT()、SET_MOTION_OUTPUT_VALUE()、SET_AUX_OUTPUT_VALUE() and WAIT() into the emccanon.cc subset so M62-M68/M66 command envelopes emit EMC_MOTION_SET_DOUT、EMC_MOTION_SET_AOUT and EMC_AUX_INPUT_WAIT / interp_list evidence. M428-M430 now enter through canon SET_AUX_OUTPUT_VALUE() before crossing the existing taskintf.cc emcMotionSetAout() / lcmot_write_aout() boundary for switchkins; full native digital IO, analog IO wait semantics, queue ownership, and NML transport remain unpromoted.	tools/verify_task_emccanon_motion_output.sh; tests/wasm/node/verify_task_hal_wasm.sh
Task/motion/HAL simulation runtime T-046 no-JSON main RUN path	src/emc/task/emctask.cc, src/emc/task/emccanon.cc, and src/emc/task/taskintf.cc plan/canon/issue references	Runtime-edge adapter, not full native task promotion	T-046 removes host-provided JSON motion plans from the primary RUN validation path. The default staged-program path now proves emcTaskPlanRead() / emcTaskPlanCommand() / emcTaskPlanExecute() through emccanon.cc command envelopes and taskintf.cc motion issue without calling lctask_load_program_motion_plan_json(). loadProgramMotionPlan() remains exposed only as a timed-plan compatibility/debug SDK entry with separate tests, not as the main program execution path.	tools/verify_task_no_json_motion_plan_main_path.sh; tests/wasm/node/verify_task_hal_wasm.sh; tests/wasm/node/verify_task_hal_sdk.sh; tests/wasm/node/verify_task_state_matrix.mjs
Identity/trivial kinematics	src/emc/kinematics/kinematics.h, cubic.h, kins_util.c, trivkins.c	Copy unchanged	HAL component lifecycle and RTAPI module metadata are replaced by standalone shims; forward/inverse mapping behavior remains LinuxCNC source	Vendor byte sync, per-file source probes, linuxcnc_kinematics_probe
Switchable 5-axis bridge kinematics	src/emc/kinematics/5axiskins.c, switchkins.c, switchkins.h, userkfuncs.c, plus src/rtapi/rtapi_ctype.h	Copy unchanged	HAL pin allocation, HAL component lifecycle, and RTAPI module metadata are standalone runtime edges; switchable 5-axis forward/inverse behavior remains LinuxCNC source	Vendor byte sync, per-file source probes, linuxcnc_5axis_kinematics_probe
TRT table-rotary kinematics	src/emc/kinematics/trtfuncs.c, xyzac-trt-kins.c, xyzbc-trt-kins.c	Copy unchanged	HAL pin allocation and switchkins lifecycle stay runtime boundaries; XYZAC/XYZBC TRT forward/inverse behavior remains LinuxCNC source	Vendor byte sync, per-file source probes, linuxcnc_xyzac_trt_kinematics_probe, linuxcnc_xyzbc_trt_kinematics_probe
Five-axis switchkins machine configs and M428/M429/M430 remaps	configs/sim/axis/vismach/5axis/bridgemill/*, table-dual-rotary/*, and table-rotary-tilting/* selected INI, HAL, tool-table, XML, demo, and remap_subs/*.ngc files plus src/emc/rs274ngc/interp_remap.cc	Copy unchanged	M428, M429, and M430 remain LinuxCNC REMAP entries that call LinuxCNC NGC subroutines using M68, M66, _hal[motion.switchkins-type], and the INI/HAL motion.analog-out-03 => motion.switchkins-type link; standalone remap descriptor parsing routes through vendored Interp::parse_remap() and find_ngc_file(), and NGC remap/file execution routes through vendored LinuxCNC O-word and open()/read()/execute() paths while HAL synchronization stays a runtime adapter boundary	Vendor byte sync, linuxcnc_5axis_remap_asset_probe, linuxcnc_remap_parse_harness, linuxcnc_remap_hal_sync_harness, linuxcnc_5axis_remap_execute_harness, tests/wasm/node/verify_interp_wasm.sh, tests/wasm/node/verify_sim_configs_wasm.sh, tests/browser/verify_interp_browser.sh, tests/browser/verify_ini_panel_browser.sh
Representative sim-config machine programs	configs/sim/axis/foam/*, configs/sim/axis/geometry/M110, xyzc.ini, xyzc.ngc, configs/sim/axis/external_offsets/M111, dyn_demo.ngc, dynamic_offsets.ini, eoffsets.ngc, eoffsets.ini, jwp_z.ngc, jwp_z.ini, opa_demo.ngc, opa.ini, circles.ngc, eoffset.tbl, configs/sim/axis/sim.tbl, configs/sim/axis/gladevcp/gladevcp_panel.ini, probe.ngc, sim.tbl, configs/sim/axis/vismach/melfa-sim/*, selected configs/sim/axis/vismach/puma/*, and configs/sim/woodpecker/on_abort.ngc, tool.tbl, woodpecker.ini	Copy unchanged	The foam, xyzc, external-offset, plain gladevcp/probe.ngc, melfa-sim, PUMA, and deterministic woodpecker/on_abort.ngc sample programs remain LinuxCNC sim-config assets. The standalone boundary only copies INI, tool table, G-code, executable user-M files, SUBROUTINE_PATH files, and remap-NGC files into the native or WASM filesystem, then calls vendored LinuxCNC INI parsing and Interp::open()/read()/execute() or the existing five-axis remap execution C ABI through the machine-config adapter. The native sim-config harness now prefers [DISPLAY]OPEN_FILE when several INI files live beside a program, so each program is judged with its corresponding machine context. The JS SDK planIniFileContextStaging() is a generic manifest-based file-plan helper, planSimConfigStaging() is its configs/sim wrapper, and runSimConfigProgram() only writes caller-provided text files to the Emscripten filesystem, applies executable bits, and forwards to LinuxCNC-backed C ABI entry points. M110/M111 process execution stays a runtime boundary represented by deterministic USER_M_COMMAND canonical events, while GUI driver, HAL process launch, and external userspace process startup remain outside standalone Node/browser execution. The TWP table-rotary_spindle-rotary-nutating demo family remains outside this representative row because its Layer 4 promotion still depends on a deliberate Python-remap runtime boundary, not on additional JS-owned staging logic.	Vendor byte sync, tests/native/verify_sim_configs.sh, tests/wasm/node/verify_sim_configs_wasm.sh, tests/wasm/node/verify_sim_configs_inventory_wasm.sh, tests/browser/verify_interp_browser.sh, tests/host/verify_host_smokes.sh
Sim-config inventory and blocked-boundary assets	Selected configs/sim/axis/db_demo/*, axis/rose_engine/*, axis/vismach/millturn/*, configs/sim/qtdragon/*, configs/sim/qtdragon_hd/*, and configs/sim/qtvcp_screens/qtdragon/* files	Copy unchanged	These assets are vendored for the machine-readable configs/sim Node inventory and blocked-boundary accounting. Eligible on_abort and plain INI/tool-table rows run through the same LinuxCNC-backed runSimConfigProgram() staging path as other sim-config samples. Rows such as axis/db_demo/base.ngc and axis/vismach/millturn/example.ngc remain explicit Layer 4 blocked entries because their native LinuxCNC configs depend on tool-database or external user-M process boundaries; Node/browser inventory records those dependencies instead of reducing them to standalone file execution.	Vendor byte sync, tests/native/verify_sim_configs.sh, tests/wasm/node/verify_sim_configs_inventory_wasm.sh, tests/host/verify_host_smokes.sh
Representative nc_files examples	nc_files/3D_Chips.ngc, nc_files/arcspiral.ngc, nc_files/factorial.ngc, nc_files/hole-circle.ngc, nc_files/m6demo.ngc	Copy unchanged	These upstream linuxcnc/nc_files examples are copied byte-for-byte into the WASM vendor tree after the native nc_files harness classifies the broader directory. Node and browser tests only stage the original .ngc text and, for 3D_Chips.ngc, the minimal INI-declared tool table context required by its upstream T1 M6 line in the Emscripten filesystem, then call the LinuxCNC-backed Interp::open(), read(), and execute() path through the existing SDK; no G-code, O-word, tool-change, or M-code behavior is implemented in JavaScript	Vendor byte sync, tests/native/verify_nc_files.sh, tests/wasm/node/verify_nc_files_wasm.sh, tests/browser/verify_interp_browser.sh, tests/host/verify_host_smokes.sh
LinuxCNC remap regression fixtures	tests/remap/duplicate-o-word/*, tests/remap/fail/args.0/*, tests/remap/fail/args.1/*, tests/remap/fail/args.2/*, tests/remap/fail/body-ngc/*, tests/remap/m30-interaction/*, tests/remap/nested-remaps-oword/*, tests/remap/posargs.0/*, tests/remap/sequencing/*, selected NGC-only tests/remap/remap-io/test-ngc.ini plus io_*.ngc, and src/emc/rs274ngc/interp_remap.cc plus interp_o_word.cc	Copy unchanged	The upstream duplicate O-word, NGC-only remap failure, M30/remap-level interaction, nested O-word remap, positional-argument remap, G/M remap sequencing, and remap-IO NGC subroutine regressions remain LinuxCNC REMAP/O-word/file or MDI execution tests. The standalone boundary only copies the upstream test files into native or WASM filesystems, reads LinuxCNC INI SUBROUTINE_PATH, REMAP, and OWORD_NARGS entries, and calls vendored Interp::parse_remap(), open(), read(), and execute() or feeds the upstream remap-IO MDI sequence into vendored Interp::execute(); the continue-on-error runner path only mirrors LinuxCNC rs274 -n 0 test execution and does not implement duplicate-label, O-word, nested remap, M30, positional-argument, failure, sequencing, M62-M68, M66 input, or remap semantics	Vendor byte sync, linuxcnc_duplicate_oword_remap_harness, tests/wasm/node/verify_interp_wasm.sh, tests/browser/verify_interp_browser.sh
LinuxCNC interpreter regression fixtures	tests/interp/do-while-break/*, tests/interp/oword-bug315/*, tests/interp/oword-bug315-p2/*, tests/interp/exists/*, tests/interp/return-value/*, tests/interp/subs-follow-main/*, tests/interp/fractional-linenumbers/*, tests/interp/cam-nisley/*, tests/interp/namedparam-bug424/*, tests/interp/flowsnake/*, selected tests/interp/good/*.ngc center-format arc tolerance fixtures, tests/interp/g6164/*, tests/interp/inside-corners/*, tests/interp/inverse-time-with-comp/*, selected tests/ccomp/* standalone cutter-compensation fixtures, selected tests/interp/bad/*.ngc file-error fixtures, tests/interp/g33.1/*, selected tests/interp/g71-*/* and tests/interp/g72-*/* lathe canned-cycle fixtures, tests/interp/g76/*, tests/interp/g10/*, tests/interp/g52/g52-g92-interaction/*, selected tests/interp/rotation/* pure interpreter cases, tests/interp/iniparam/*, tests/interp/iniparam-failassign/*, tests/interp/m19/*, tests/interp/magic_comments/param_format_printing/*, selected tests/interp/m98m99/* pure interpreter cases, tests/interp/sub-call-from-sub/*, tests/interp/sequence-number/*, tests/interp/nested-sub-error/*, tests/interp/nested-sub-in-file-error/*, tests/interp/oword-unwind/*, tests/interp/abort-hot-comment/*, plus vendored interpreter/O-word sources including interp_o_word.cc, interp_read.cc, interp_execute.cc, interp_find.cc, interp_namedparams.cc, and rs274ngc_pre.cc	Copy unchanged	The upstream do/while/break, O-word bug315, EXISTS[], subroutine return-value, subs-after-main, fractional line-number, storm-door latch cam toolpath with upstream tool-table context, named-parameter, recursive O-word flowsnake toolpath, selected center-format arc tolerance acceptance/rejection cases, G61/G64 path-control and naive-cam tolerance behavior, cutter-compensation concave/convex/tangent geometry, inverse-time feed and cutter-compensation interaction, selected standalone cutter-compensation file execution with upstream tool tables, selected file-execution error cases including canned-cycle A-axis rejection, center-format arc radius mismatch rejection, cutter-compensation arc-exit/gouging rejection, and malformed EXISTS[], rigid-tap G33.1, G71/G72 lathe canned-cycle iteration behavior, G76 lathe threading with upstream tool-table context, G10 L1/L10/L11/L2/L20 tool-table/offset/G5X/G92/rotation regressions, G52/G92 shared-offset interaction, selected rotation/G53/G28 absolute-position and endpoint, INI named-parameter lookup/read-only protection, M19 spindle-orient offset/timeout handling, magic-comment parameter formatting, selected Fanuc M98/M99 call, loop, missing-P-word, missing-subprogram, mixed Fanuc/RS274NGC sub-style, DISABLE_FANUC_STYLE_SUB, main-program O-word termination, and O-expression regressions, external-subroutine-call, external-subroutine line-number, nested-subroutine-definition rejection, blocked forward-seek-to-later-numbered-sub, O-word stack unwind after a subroutine error, (ABORT,...) hot-comment parameter-expansion regressions, and INI-declared G92 parameter-file startup persistence remain LinuxCNC interpreter file-execution or initialization tests. The standalone boundary only vendors the original upstream assets, copies *.ngc, test.ini, test.tbl, subs/*.ngc, referenced external subroutine .ngc files, and staged variable files into native or WASM filesystems where applicable, sets the LinuxCNC INI_FILE_NAME runtime edge for _ini[...], applies LinuxCNC INI machine settings such as [RS274NGC]ORIENT_OFFSET, loads upstream tool tables through LinuxCNC tooldata_load()/Interp::load_tool_table(), reads LinuxCNC INI SUBROUTINE_PATH, passes [RS274NGC]PARAMETER_FILE through vendored ini_load()/Interp::init()/restore_parameters() when the staged variable file exists, captures LinuxCNC (PRINT,...) output through the existing stdout/Emscripten print boundary, and calls vendored Interp::open(), read(), and execute(); it does not implement O-word loop, break, unwind, subroutine, dynamic call, M98/M99, EXISTS[], named-parameter, canned-cycle, cutter-compensation, inverse-time feed, recursive O-word or cam toolpath generation, path-control, naive-cam tolerance, arc tolerance, threading, rigid tap, G10, G52/G92 offset behavior, G92 persistence, tool-offset, absolute-position named-parameter, G28/G53 endpoint, INI-variable, read-only parameter, line-number, spindle-speed, spindle-orient, magic-comment formatting, subroutine lookup, ABORT hot-comment, error, or branch semantics	Vendor byte sync, linuxcnc_interp_minimal_harness, tests/wasm/node/verify_interp_wasm.sh, tests/browser/verify_interp_browser.sh
Additional non-switchable kinematics	src/emc/kinematics/corexykins.c, rotatekins.c, rosekins.c, maxkins.c, lineardeltakins.c, lineardeltakins-common.h, rotarydeltakins.c, rotarydeltakins-common.h, scorbot-kins.c, tripodkins.c, scarakins.c, pumakins.c, pumakins.h, genhexkins.c, genhexkins.h, genserfuncs.c, genserkins.c, genserkins.h, ugenserkins.c, pentakins.c, pentakins.h, cubic.c	Copy unchanged	HAL pin allocation, HAL parameter allocation, HAL component lifecycle, RTAPI module metadata, Go math C/C++ linkage, switchkins iterative-forward warmup, and userspace test-program process entry remain standalone runtime edges; forward/inverse behavior remains LinuxCNC source where the module exposes it	Vendor byte sync, per-file source probes, linuxcnc_corexy_kinematics_probe, linuxcnc_rotate_kinematics_probe, linuxcnc_rose_kinematics_probe, linuxcnc_max_kinematics_probe, linuxcnc_lineardelta_kinematics_probe, linuxcnc_rotarydelta_kinematics_probe, linuxcnc_scorbot_kinematics_probe, linuxcnc_tripod_kinematics_probe, linuxcnc_scara_kinematics_probe, linuxcnc_puma_kinematics_probe, linuxcnc_genser_kinematics_probe, linuxcnc_genhex_kinematics_probe, linuxcnc_pentakins_kinematics_probe
Trajectory planner	src/emc/tp/tp.c, tc.c, tcq.c, spherical_arc.c, blendmath.c, sp_scurve.c, ruckig_wrapper.c, plus matching *.h files	Copy unchanged	Native realtime scheduling and motion process state are replaced by standalone probe setup; the WASM TP probe uses the same deterministic status/config boundary and calls vendored TP APIs through a narrow C ABI	Vendor byte sync, per-file source probes, linuxcnc_tp_api_probe, tests/wasm/node/verify_tp_wasm.sh
Ruckig C planner support	Selected src/emc/tp/cruckig/*.c and *.h files in the manifest	Copy unchanged	Used as LinuxCNC planner support code through vendored TP sources	Vendor byte sync, per-file source probes, tests/wasm/node/verify_tp_wasm.sh
Posemath	src/libnml/posemath/posemath.cc, _posemath.c, gomath.c, sincos.c, and matching headers	Copy unchanged	gomath.c is compiled as C; rtapi.h shim is C/C++ compatible for this boundary	Vendor byte sync, per-file source probes, TP native and WASM probes
RS274 interpreter state and parser	src/emc/rs274ngc/modal_state.*, interp_internal.*, interp_read.cc, interp_check.cc, interp_execute.cc, interp_find.cc, interp_array.cc, interp_queue.*, rs274ngc*, units.h	Copy unchanged	Python/remap/runtime edges are isolated in standalone wrappers and shims; parser and execution logic remain LinuxCNC source	Vendor byte sync, per-file source probes, interpreter harness fixtures
RS274 conversion semantics	src/emc/rs274ngc/interp_convert.cc, interp_arc.cc, interp_inverse.cc, interp_cycles.cc, interp_g7x.cc, interp_o_word.cc, interp_write.cc	Copy unchanged	Canonical calls are captured by standalone event sink functions; conversion behavior stays in vendored LinuxCNC files; feed-rate state is read back through the canonical runtime boundary during length-unit conversion; single-axis rotary indexer lock/unlock dispatch remains vendored LinuxCNC issue_straight_index() behavior	Vendor byte sync, per-file source probes, canonical fixture suite, no standalone Interp::convert_g() guard, linuxcnc_indexer_harness, tests/wasm/node/verify_interp_wasm.sh and tests/browser/verify_interp_browser.sh rotary-indexer assertions
User M-code registration boundary	src/emc/task/emctask.cc, src/emc/rs274ngc/interp_convert.cc, src/emc/rs274ngc/interp_queue.cc	Runtime-edge adapter	Vendored interpreter conversion still checks LinuxCNC USER_DEFINED_FUNCTION before accepting M100..M199 and queues through vendored enqueue_M_USER_COMMAND(). The standalone machine-config adapter mirrors LinuxCNC task search order for [DISPLAY]PROGRAM_PREFIX and [RS274NGC]USER_M_PATH, registers executable M-code files in USER_DEFINED_FUNCTION, calls the canonical FINISH() boundary, and records deterministic USER_M_COMMAND events instead of spawning host processes in WASM/browser.	linuxcnc_interp_minimal_harness sim M110/M111 probes, tests/wasm/node/verify_interp_wasm.sh minimal M110/M111 fixtures
Named parameters and tool slot status	src/emc/rs274ngc/interp_namedparams.cc, related interpreter headers	Copy unchanged	_ini[...] and _hal[...] resolve through standalone INI/HAL adapters while lookup order stays LinuxCNC-derived; current/selected tool slot reads for vendored Interp::synch() come from the standalone tool adapter	Vendor byte sync, source probe, linuxcnc_namedparam_harness, linuxcnc_interp_init_harness, tests/wasm/node/verify_interp_wasm.sh and tests/browser/verify_interp_browser.sh Interp::synch() tool-slot assertions plus Interp::init_named_parameters()/find_named_param() named-parameter lookup assertions
Tool table parsing and formatting	src/emc/tooldata/tooldata_common.cc	Copy unchanged plus standalone storage callbacks	Native file parsing/formatting stays in vendored LinuxCNC source; the standalone tool adapter supplies tooldata_get()/tooldata_put() storage and index lookup, the WASM boundary only selects the LinuxCNC non-random or random-toolchanger branch via tooldata_init(), and OPFS remains a host-side persistence boundary	Vendor byte sync, linuxcnc_tooldata_common_source_probe, tests/wasm/node/verify_interp_wasm.sh non-random/random load/save tool-table assertions
Dynamic interpreter base	src/emc/rs274ngc/interp_base.*	Copy unchanged	interp_base.cc source probe uses standalone EMC2_HOME compile-time path boundary for LinuxCNC dynamic interpreter lookup	Vendor byte sync, linuxcnc_interp_base_source_probe

Dependency Matrix

Dependency	LinuxCNC files that expose it	Standalone treatment
Native file IO	inifile.cc, rs274ngc_pre.cc, tooldata_common.cc, parameter file paths, tool table paths	Allowed in native probes; the interpreter WASM C ABI validates direct parameter-file restore/save by calling vendored Interp::restore_parameters() and Interp::save_parameters(), validates startup G92 parameter persistence by passing staged [RS274NGC]PARAMETER_FILE paths through vendored ini_load()/Interp::init()/restore_parameters(), including missing required numeric parameter defaulting and DISABLE_G92_PERSISTENCE, and validates tool-table load/save by calling vendored tooldata_load() and tooldata_save() against Emscripten filesystem paths; browser OPFS remains a host-side adapter under runtime/opfs/, with path ownership in runtime/opfs/path-model.js, generic snapshot persistence in runtime/opfs/snapshot-store.js, pure-text machine-file persistence in runtime/opfs/machine-file-store.js, OPFS-to-WASM parameter-file copying in runtime/opfs/linuxcnc-parameter-bridge.js, OPFS-to-WASM tool-table copying in runtime/opfs/linuxcnc-tool-table-bridge.js, and grouped INI/parameter/tool-table session loading in runtime/opfs/linuxcnc-machine-session-bridge.js, including INI-derived [RS274NGC]PARAMETER_FILE and [EMCIO]TOOL_TABLE OPFS filename selection through the LinuxCNC-backed INI SDK; explicit host session file-name options take precedence over INI-derived names, missing INI file-name values fall back to host default linuxcnc.var and tool.tbl paths, and OPFS path validation rejects traversal and nested segments before host storage access
RTAPI	rtapi_*.h, TP, posemath, motion headers	Minimal standalone shim in runtime/core/shims/rtapi.h
NML transport	emc.hh, motion/NML type headers	Transport is not ported; only the status/type edges needed by vendored compute code are exposed through standalone shims and probes
HAL runtime	named parameter lookup, kinematics component lifecycle, and runtime status edges	Existing kinematics/interpreter HAL adapter remains under runtime/core/linuxcnc_wrap/linuxcnc_hal_adapter.cpp; phase 2 task-HAL work adds linuxcnc_hal_runtime.cpp for owned pin/signal/param/net/thread scheduler state, still unpromoted for native HAL sync
User M-code process execution	emctask.cc, interp_convert.cc, interp_queue.cc	Search and registration are mirrored at the standalone machine-config boundary; native/WASM tests record deterministic USER_M_COMMAND events and do not spawn host processes
Python/remap	rs274ngc_pre.cc, interp_o_word.cc, interp_remap.cc, remap hooks, selected LinuxCNC configs/sim/axis/vismach/5axis/*/remap_subs/*.ngc files, tests/remap/duplicate-o-word/*, tests/remap/fail/args.0/*, tests/remap/fail/args.1/*, tests/remap/fail/args.2/*, tests/remap/fail/body-ngc/*, tests/remap/m30-interaction/*, tests/remap/nested-remaps-oword/*, tests/remap/posargs.0/*, tests/remap/sequencing/*, and NGC-only tests/remap/remap-io/test-ngc.ini plus io_*.ngc	Python calls remain stubbed at the runtime boundary today; five-axis M428/M429/M430 source assets and the upstream NGC remap regression files are vendored unchanged. NGC remap descriptor paths parse through vendored LinuxCNC code, native/WASM/browser validation executes the NGC remap files through vendored LinuxCNC O-word and file execution paths, and the remap-IO NGC-only branch feeds the upstream MDI sequence into vendored LinuxCNC Interp::execute() while external M66 input values and _hal[...] synchronization remain standalone runtime adapter boundaries
Canonical machine actions	interp_convert.cc, interp_execute.cc, interp_queue.cc, selected tests/interp/* regression assets	Captured by standalone canonical event sink functions for regression fixtures; vendored upstream interpreter test assets remain unchanged and are executed through LinuxCNC file execution
Realtime scheduling	TP and motion headers	Not ported; native TP probes seed deterministic status/config state
GUI	None used as implementation	Native LinuxCNC GUI remains reference-only

Known Gaps

• Additional non-trivial kinematics implementation files are now extracted at source-probe level. Serial genserkins, hexapod genhexkins, and pentapod pentakins have native runtime baselines; full runtime machine baselines for userspace genser flows are not yet established.
• Five-axis M428/M429/M430 source assets are now vendored for bridge-mill, dual-rotary, and table-rotary-tilting LinuxCNC sample machines. NGC remap descriptors for the TRT, TDR, and bridge-mill sample machines are parsed through vendored Interp::parse_remap() and find_ngc_file() by linuxcnc_remap_parse_harness; native, WASM Node, browser interpreter, and INI panel UI validation execute the selected switchkins demo files through vendored LinuxCNC O-word remap dispatch, file open()/read()/execute(), and the standalone HAL adapter boundary for M68/M66 plus _hal[motion.switchkins-type] readback.
• Cutter compensation positive motion and negative interpreter paths are fixture-covered through vendored interp_convert.cc and interp_queue.cc.
• Browser/WASM C ABI and JS SDK layers are now present for the INI parser, the current interpreter-core smoke scope, and a trajectory-planner TP probe. The interpreter SDK is a thin allocation, filesystem, and C ABI wrapper over vendored LinuxCNC execution paths, including parameter-file restore/save through vendored rs274ngc_pre.cc and non-random/random tool-table load/save through vendored tooldata_common.cc; it does not define G-code, parameter, or tool-table semantics. The TP WASM probe calls vendored LinuxCNC planner APIs directly and does not expose a browser planner SDK yet; full planner/session SDK coverage remains future work.
• OPFS persistence is connected to the INI panel through the host-side runtime/opfs/file-service.js adapter. runtime/opfs/path-model.js now defines paths for INI, tool table, parameter file, G-code program, preview-cache, and session-snapshot targets. runtime/opfs/snapshot-store.js adds a generic JSON session snapshot envelope, supports custom snapshot filenames under the session directory, and validates its format, version, session id, metadata, payload shape, and filename boundary. runtime/opfs/machine-file-store.js adds pure-text storage for INI, tool table, parameter file, and G-code program content, with G-code program filenames constrained by runtime/opfs/path-model.js. runtime/opfs/linuxcnc-parameter-bridge.js copies OPFS-backed parameter files into the interpreter SDK filesystem and writes back the LinuxCNC-saved parameter file plus backup. runtime/opfs/linuxcnc-tool-table-bridge.js copies OPFS-backed tool tables into the interpreter SDK filesystem and writes back the LinuxCNC-saved tool table. runtime/opfs/linuxcnc-machine-session-bridge.js groups INI, parameter, and tool-table loading into one host-side session load boundary and can derive the random-toolchanger tooldata mode from [EMCIO]RANDOM_TOOLCHANGER plus parameter/tool-table OPFS file names from [RS274NGC]PARAMETER_FILE and [EMCIO]TOOL_TABLE through the LinuxCNC-backed INI SDK. Explicit host session file-name options take precedence over those INI-derived names, missing INI file-name values fall back to the default host path model, and invalid traversal or nested file names are rejected by runtime/opfs/path-model.js. Full machine-state restoration remains future work.
• Native LinuxCNC GUI code remains out of scope for implementation.
• Native task/motion/HAL sync remains a partial Web simulation adapter, not a full LinuxCNC task/HAL promotion. Phase 0 source/probe gates, phase 2 HAL registry, phase 3 motion/HAL servo-cycle C ABI, phase 4 task shim, SDK wrapper, machine-file session handoff, Worker/client files, store action mapping, diagnostics, and narrow emctask.cc/taskintf.cc/emccanon.cc source-anchored subsets are present. Motion ERROR/soft-limit injection, task/top-level RCS DONE/EXEC/ERROR aggregation, and the emc_nml.hh reuse decision are documented and gated, but the status container is still a phased standalone boundary rather than a direct EMC_STAT include. The readiness fields intentionally stay nativeTaskReady=false, nativeHalSyncReady=false, and fullLinuxCncProgramExecutionReady=false until full native task cycle, native HAL sync, and full LinuxCNC program execution are implemented and independently verified.