按规划继续工作

结论：OPFS 参数文件已通过桥接进入 LinuxCNC-backed WASM restore/save 路径，native 与 host/WASM/browser 验证全部通过。

wasm-port/docs/compatibility-validation.md

@@ -99,7 +99,10 @@ paths, unavailable OPFS storage, and the host-side OPFS path model for INI,
 tool table, parameter, G-code, preview-cache, and session-snapshot storage
 targets. It also validates the host-side session snapshot JSON envelope and
 round-trip store plus pure-text machine file and G-code stores without
-defining CNC machine-state or file-format semantics.
+defining CNC machine-state or file-format semantics. It now also validates the
+OPFS-to-WASM parameter-file bridge with a mock interpreter SDK to ensure the
+host boundary copies text into and out of the WASM filesystem without defining
+parameter semantics.
 
 The browser INI/OPFS smoke script serves `wasm-port/` over localhost and runs
 Chromium headless against a test page that imports the JS SDK, loads the INI
@@ -114,7 +117,9 @@ behavior in JavaScript, and verifies existing canonical fixtures through the
 exported C ABI backed by vendored LinuxCNC `Interp::execute()` and
 `Interp::open()`/`read()`/`execute()` paths, including the INI-aware
 named-parameter file path and negative interpreter fixtures with expected
-error text plus absent canonical motion output.
+error text plus absent canonical motion output. It also uses real browser OPFS
+storage plus the interpreter SDK to restore and save a LinuxCNC parameter file
+through vendored `Interp::restore_parameters()` and `Interp::save_parameters()`.
 
 The aggregate host smoke script builds the INI and interpreter-core WASM
 artifacts once, then runs the Node WASM smokes, the Node OPFS mock smoke, and
@@ -168,9 +173,9 @@ The validation fails if:
 | --- | --- |
 | `tests/wasm/node/verify_ini_wasm.sh` | Validates the browser-facing INI WASM module can be built from vendored LinuxCNC `inifile.cc`, loaded through the JS SDK in Node, and queried through the exported C ABI. |
 | `tests/wasm/node/verify_interp_wasm.sh` | Validates the initial interpreter-core WASM module can be built from vendored LinuxCNC interpreter source, loaded through the interpreter JS SDK, run the first fixture group through `Interp::execute()` and selected file fixtures through `Interp::open()`/`read()`/`execute()`, match the native canonical event plus required state readback fixtures, and run parameter-file restore/save through vendored LinuxCNC `Interp::restore_parameters()` and `Interp::save_parameters()`. |
-| `tests/opfs/node/verify_file_service.sh` | Validates the host-owned OPFS text-file adapter, path model, session snapshot store, machine file store, and G-code text store used by the browser INI panel without moving file persistence into the WASM core. |
+| `tests/opfs/node/verify_file_service.sh` | Validates the host-owned OPFS text-file adapter, path model, session snapshot store, machine file store, G-code text store, and OPFS-to-WASM parameter-file bridge without moving file persistence or parameter semantics into the WASM core. |
 | `tests/browser/verify_ini_panel_browser.sh` | Validates the INI SDK, WASM module loading, OPFS text-file round trip, generic session snapshot round trip, machine file text round trip, and G-code text round trip in a real browser runtime. |
-| `tests/browser/verify_interp_browser.sh` | Validates the interpreter-core WASM module loads through the interpreter JS SDK in a real browser runtime and runs selected positive and negative canonical fixtures through vendored LinuxCNC `Interp::execute()` plus `Interp::open()`/`read()`/`execute()` via the exported C ABI. |
+| `tests/browser/verify_interp_browser.sh` | Validates the interpreter-core WASM module loads through the interpreter JS SDK in a real browser runtime and runs selected positive and negative canonical fixtures through vendored LinuxCNC `Interp::execute()` plus `Interp::open()`/`read()`/`execute()` via the exported C ABI, including OPFS-backed parameter-file restore/save through vendored LinuxCNC source. |
 | `tests/host/verify_host_smokes.sh` | Runs the current host-side Node, WASM interpreter-core, OPFS, and browser smoke validation with shared WASM builds. |
 
 ## Fixture Coverage
@@ -238,8 +243,10 @@ restore/save behavior through the exported C ABI, including out-of-order file
 rejection, missing-file success, required numeric parameter writeback, removal
 of named-parameter-only lines from saved output, and the `.bak` backup produced
 by vendored `save_parameters()`.
-OPFS validation is limited to the JavaScript host-boundary adapter plus the INI
-browser smoke harness. Full browser coverage, full SDK coverage, and full
+OPFS validation covers the JavaScript host-boundary adapter, the INI browser
+smoke harness, and a browser interpreter smoke that copies OPFS-backed
+parameter text through the SDK into vendored LinuxCNC parameter-file
+restore/save. Full browser coverage, full SDK coverage, and full
 machine-session validation remain future work.
 
 ## WASM/Browser Fixture Matrix

wasm-port/docs/drift-report.md

@@ -43,7 +43,7 @@ semantic rewrites:
 | Kinematics component lifecycle | Kinematics modules are initialized through LinuxCNC module entry points where native runtime probes exist, while HAL component init/ready/exit, HAL pin allocation, and RTAPI module metadata are handled by standalone shims. |
 | Go math C/C++ linkage | `genserkins` runtime probing compiles vendored `gomath.c` through a narrow C++ wrapper so LinuxCNC `genserfuncs.c` can link to the upstream Go math symbols without editing vendored source. |
 | Switchkins iterative forward | `genhexkins` runtime probing follows LinuxCNC switchkins iterative-forward behavior, including the first-call warmup path before asserting roundtrip convergence. |
-| Browser storage | OPFS remains outside the native core; `runtime/opfs/file-service.js` owns browser text-file persistence, `runtime/opfs/path-model.js` owns host-side storage paths for INI, tool table, parameter, G-code, preview-cache, and session-snapshot content, `runtime/opfs/snapshot-store.js` owns generic JSON session snapshot persistence, and `runtime/opfs/machine-file-store.js` owns pure-text machine-file and G-code persistence. |
+| Browser storage | OPFS remains outside the native core; `runtime/opfs/file-service.js` owns browser text-file persistence, `runtime/opfs/path-model.js` owns host-side storage paths for INI, tool table, parameter, G-code, preview-cache, and session-snapshot content, `runtime/opfs/snapshot-store.js` owns generic JSON session snapshot persistence, `runtime/opfs/machine-file-store.js` owns pure-text machine-file and G-code persistence, and `runtime/opfs/linuxcnc-parameter-bridge.js` only copies parameter files between OPFS text storage and the LinuxCNC-backed WASM parameter-file ABI. |
 
 ## Enforced Non-Drift Rules
 

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

@@ -53,7 +53,7 @@ Current validation is intentionally mechanical:
 
 | Dependency | LinuxCNC files that expose it | Standalone treatment |
 | --- | --- | --- |
-| Native file IO | `inifile.cc`, `rs274ngc_pre.cc`, parameter file paths | Allowed in native probes; the interpreter WASM C ABI now validates parameter-file restore/save by calling vendored `Interp::restore_parameters()` and `Interp::save_parameters()` 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`, and pure-text machine-file persistence in `runtime/opfs/machine-file-store.js` |
+| Native file IO | `inifile.cc`, `rs274ngc_pre.cc`, parameter file paths | Allowed in native probes; the interpreter WASM C ABI validates parameter-file restore/save by calling vendored `Interp::restore_parameters()` and `Interp::save_parameters()` 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`, and OPFS-to-WASM parameter-file copying in `runtime/opfs/linuxcnc-parameter-bridge.js` |
 | 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 | Standalone HAL adapter under `runtime/core/linuxcnc_wrap/` |
@@ -82,8 +82,9 @@ Current validation is intentionally mechanical:
   preview-cache, and session-snapshot targets. `runtime/opfs/snapshot-store.js`
   adds a generic JSON session snapshot envelope.
   `runtime/opfs/machine-file-store.js` adds pure-text storage for INI, tool
-  table, parameter file, and G-code program content; browser session plumbing
-  that feeds OPFS-backed parameter files into the existing WASM
-  `restore_parameters()`/`save_parameters()` ABI, plus semantic loading for
-  tool tables and machine-state restoration, remains future work.
+  table, parameter file, and G-code program content.
+  `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; UI-level session plumbing, semantic loading for
+  tool tables, and machine-state restoration remain future work.
 - Native LinuxCNC GUI code remains out of scope for implementation.

wasm-port/runtime/opfs/linuxcnc-parameter-bridge.js

@@ -0,0 +1,63 @@
+import { loadTextFile, saveTextFile } from "./file-service.js";
+import { parameterFilePath } from "./path-model.js";
+
+const DEFAULT_WASM_PARAMETER_PATH = "/work/linuxcnc.var";
+
+function requireParameterSdk(interp) {
+  for (const method of ["writeTextFile", "readTextFile", "restoreParameters", "saveParameters"]) {
+    if (typeof interp?.[method] !== "function") {
+      throw new Error(`interpreter SDK is missing ${method}().`);
+    }
+  }
+}
+
+function resolvePaths(machineId, options = {}) {
+  const opfsPath = options.opfsPath ?? parameterFilePath(machineId, options.filename);
+  const wasmPath = options.wasmPath ?? DEFAULT_WASM_PARAMETER_PATH;
+  return { opfsPath, wasmPath };
+}
+
+function readOptionalWasmTextFile(interp, path) {
+  try {
+    return interp.readTextFile(path);
+  } catch {
+    return null;
+  }
+}
+
+export async function restoreMachineParametersFromOpfs(interp, machineId, options = {}) {
+  requireParameterSdk(interp);
+  const { opfsPath, wasmPath } = resolvePaths(machineId, options);
+  const text = await loadTextFile(opfsPath, options.storage);
+  interp.writeTextFile(wasmPath, text);
+  return {
+    opfsPath,
+    wasmPath,
+    result: interp.restoreParameters(wasmPath),
+  };
+}
+
+export async function saveMachineParametersToOpfs(interp, machineId, values, options = {}) {
+  requireParameterSdk(interp);
+  const { opfsPath, wasmPath } = resolvePaths(machineId, options);
+  const existingText = await loadTextFile(opfsPath, options.storage);
+  interp.writeTextFile(wasmPath, existingText);
+
+  const result = interp.saveParameters(wasmPath, values);
+  const savedText = interp.readTextFile(wasmPath);
+  const backupText = readOptionalWasmTextFile(interp, `${wasmPath}.bak`);
+
+  await saveTextFile(opfsPath, savedText, options.storage);
+  if (backupText !== null) {
+    await saveTextFile(`${opfsPath}.bak`, backupText, options.storage);
+  }
+
+  return {
+    opfsPath,
+    backupOpfsPath: backupText === null ? null : `${opfsPath}.bak`,
+    wasmPath,
+    result,
+    savedText,
+    backupText,
+  };
+}

wasm-port/tests/browser/interp_smoke.html

@@ -8,6 +8,14 @@
   <pre id="status">running</pre>
   <script type="module">
     import { createLinuxCncInterpSdk } from "../../runtime/sdk/src/index.js";
+    import {
+      restoreMachineParametersFromOpfs,
+      saveMachineParametersToOpfs,
+    } from "../../runtime/opfs/linuxcnc-parameter-bridge.js";
+    import {
+      loadMachineTextFiles,
+      saveMachineTextFiles,
+    } from "../../runtime/opfs/machine-file-store.js";
     import {
       INTERP_BROWSER_FILE_FIXTURES,
       INTERP_BROWSER_MDI_FIXTURES,
@@ -108,6 +116,71 @@
         (await fetchText(`../fixtures/canon/${INTERP_INI_FIXTURE}.events`)).trimEnd(),
       );
 
+      await saveMachineTextFiles("browser-interp", {
+        ini: "[EMC]\nMACHINE = browser-interp\n",
+        toolTable: "T0 P0 ; no tool\n",
+        parameters: [
+          "5161 10.5",
+          "5162 20.25",
+          "5220 1",
+          "5221 2.25",
+          "5399 44",
+          "<_named_param> 123",
+          "",
+        ].join("\n"),
+      });
+      const restoredParameters = await restoreMachineParametersFromOpfs(
+        interp,
+        "browser-interp",
+        { wasmPath: "/work/browser-linuxcnc.var" },
+      );
+      verifyExpectedOutput(
+        "opfs_restore_parameters",
+        restoredParameters.result,
+        [
+          "restore_parameters=0",
+          "parameter_5161=10.5",
+          "parameter_5162=20.25",
+          "parameter_5221=2.25",
+          "parameter_5399=44",
+        ].join("\n"),
+      );
+      const savedParameters = await saveMachineParametersToOpfs(
+        interp,
+        "browser-interp",
+        {
+          5161: 12.34,
+          5162: 56.78,
+          5220: 1.0,
+          5221: 9.87,
+          5399: 66.6,
+        },
+        { wasmPath: "/work/browser-linuxcnc.var" },
+      );
+      verifyExpectedOutput(
+        "opfs_save_parameters",
+        savedParameters.result,
+        [
+          "save_parameters=0",
+          "parameter_5161=12.34",
+          "parameter_5162=56.78",
+          "parameter_5221=9.87",
+          "parameter_5399=66.6",
+        ].join("\n"),
+      );
+      const machineFiles = await loadMachineTextFiles("browser-interp");
+      verifyExpectedOutput(
+        "opfs_saved_parameter_text",
+        machineFiles.parameters,
+        [
+          "5161\t12.340000",
+          "5162\t56.780000",
+          "5221\t9.870000",
+          "5399\t66.600000",
+          "absent=<_named_param>",
+        ].join("\n"),
+      );
+
       status.textContent = "browser_interp_smoke=ok";
     } catch (error) {
       status.textContent = `browser_interp_smoke=fail ${error.stack || error.message}`;

wasm-port/tests/opfs/node/verify_file_service.mjs

@@ -28,6 +28,10 @@ import {
   saveGcodeProgram,
   saveMachineTextFiles,
 } from "../../../runtime/opfs/machine-file-store.js";
+import {
+  restoreMachineParametersFromOpfs,
+  saveMachineParametersToOpfs,
+} from "../../../runtime/opfs/linuxcnc-parameter-bridge.js";
 
 class MockFileHandle {
   constructor(name) {
@@ -153,6 +157,57 @@ assert.equal(
 );
 assert.equal(await loadGcodeProgram("fixture.ngc", { storage }), "G0 X0 Y0\nM2\n");
 
+const bridgeFiles = new Map();
+const bridgeInterp = {
+  writeTextFile(path, text) {
+    bridgeFiles.set(path, text);
+  },
+  readTextFile(path) {
+    if (!bridgeFiles.has(path)) {
+      throw new Error(`missing wasm file: ${path}`);
+    }
+    return bridgeFiles.get(path);
+  },
+  restoreParameters(path) {
+    return `restore_parameters=0\nrestore_path=${path}\n`;
+  },
+  saveParameters(path, values) {
+    bridgeFiles.set(path, "5161\t12.340000\n5162\t56.780000\n");
+    bridgeFiles.set(`${path}.bak`, "5161 0.0\n5162 0.0\n");
+    return `save_parameters=0\nsave_path=${path}\nvalues=${Object.keys(values).join(",")}\n`;
+  },
+};
+
+const restoredParameters = await restoreMachineParametersFromOpfs(
+  bridgeInterp,
+  "xyzab-tdr",
+  { storage, wasmPath: "/work/bridge.var" },
+);
+assert.deepEqual(restoredParameters, {
+  opfsPath: "linuxcnc/machines/xyzab-tdr/linuxcnc.var",
+  wasmPath: "/work/bridge.var",
+  result: "restore_parameters=0\nrestore_path=/work/bridge.var\n",
+});
+assert.equal(bridgeFiles.get("/work/bridge.var"), "5161 0.0\n5162 0.0\n");
+
+const savedParameters = await saveMachineParametersToOpfs(
+  bridgeInterp,
+  "xyzab-tdr",
+  { 5161: 12.34, 5162: 56.78 },
+  { storage, wasmPath: "/work/bridge.var" },
+);
+assert.equal(savedParameters.opfsPath, "linuxcnc/machines/xyzab-tdr/linuxcnc.var");
+assert.equal(savedParameters.backupOpfsPath, "linuxcnc/machines/xyzab-tdr/linuxcnc.var.bak");
+assert.equal(savedParameters.result.includes("save_parameters=0"), true);
+assert.equal(
+  await loadTextFile("linuxcnc/machines/xyzab-tdr/linuxcnc.var", storage),
+  "5161\t12.340000\n5162\t56.780000\n",
+);
+assert.equal(
+  await loadTextFile("linuxcnc/machines/xyzab-tdr/linuxcnc.var.bak", storage),
+  "5161 0.0\n5162 0.0\n",
+);
+
 await assert.rejects(
   () => loadTextFile("linuxcnc/machines/missing.ini", storage),
   /missing file/,