按建议继续完成后续工作

结论：native 兼容性验证已接入 interpreter init、rotary indexer、canonical 边界 fixture，并新增 upstream rs274 side-by-side 基线；完整 verify_native_probes.sh 已通过。

wasm-port/docs/compatibility-validation.md

@@ -24,10 +24,14 @@ The native validation script runs these checks in order:
    vendored file exists, and every vendored file is byte-identical to upstream.
 3. `tools/verify_no_standalone_cnc_semantics.sh`
    Confirms standalone code has not reintroduced `Interp::convert_g()`.
-4. `tools/build_native_probes.sh`
+4. `tools/verify_native_linuxcnc_fixture_baseline.sh`
+   Runs a narrow side-by-side fixture baseline through upstream
+   `../linuxcnc/bin/rs274` and compares normalized canonical events for
+   fixtures that do not require standalone-only runtime adapters.
+5. `tools/build_native_probes.sh`
    Builds native source probes and standalone harnesses from vendored
    LinuxCNC source plus narrow runtime wrappers.
-5. `tests/native/verify_native_probes.sh`
+6. `tests/native/verify_native_probes.sh`
    Checks probe exit codes, source-probe coverage, harness stdout, canonical
    fixture events, and expected error behavior.
 
@@ -51,6 +55,8 @@ The validation fails if:
 | `linuxcnc_namedparam_harness` | Validates LinuxCNC named parameter behavior, `_ini[...]`, and `_hal[...]` adapter resolution. |
 | `linuxcnc_interp_minimal_harness` | Runs G-code fixtures through vendored LinuxCNC parser/execution/conversion code and captures canonical events. |
 | `linuxcnc_parameter_file_harness` | Validates LinuxCNC parameter file restore/save behavior and required/read-only parameter handling. |
+| `linuxcnc_interp_init_harness` | Validates vendored LinuxCNC `Interp::init()` emits canonical initialization boundaries through the standalone event sink. |
+| `linuxcnc_indexer_harness` | Validates vendored LinuxCNC single-axis rotary indexer dispatch emits lock/unlock and motion boundaries through the standalone event sink. |
 | `linuxcnc_tp_api_probe` | Validates vendored LinuxCNC trajectory planner calls for linear, arc, and queued motion paths. |
 | `linuxcnc_kinematics_probe` | Validates vendored LinuxCNC `trivkins.c` plus `kins_util.c` initialize and perform identity forward/inverse mapping through the standalone HAL/RTAPI boundary. |
 | `linuxcnc_5axis_kinematics_probe` | Validates vendored LinuxCNC `5axiskins.c` through `switchkins.c`, including 5-axis forward/inverse round-trip behavior and switching to identity kinematics. |
@@ -75,6 +81,11 @@ Positive G-code fixtures currently cover:
 - spindle orient
 - tool semantics
 - tool table setup
+- tool-data reload boundary
+- interpreter state-tag boundary
+- percent-delimited file `FINISH` boundary
+- file-open `ON_RESET` boundary
+- comment logging canonical calls
 - named and numbered parameters
 - O-word subroutines
 - program-end modal reset
@@ -96,9 +107,11 @@ Negative fixtures currently cover:
 Current validation is native-only. WASM, browser, SDK, OPFS, and full
 machine-session validation remain future work.
 
-The current fixture expectations validate standalone behavior against the
-vendored LinuxCNC source path. They do not yet run a side-by-side native
-LinuxCNC executable comparison for each fixture.
+The current fixture expectations validate standalone behavior against both the
+vendored LinuxCNC source path and a first upstream `rs274` side-by-side
+baseline for simple parser/conversion fixtures. Fixtures that depend on
+standalone-only runtime adapters, HAL/INI/tool table setup, or richer machine
+session state still need dedicated native LinuxCNC baselines.
 
 The kinematics probes currently cover LinuxCNC identity/trivial kinematics,
 the switchable `5axiskins` XYZBCW bridge-mill model, and the TRT `xyzac`/`xyzbc`

wasm-port/docs/drift-report.md

@@ -26,6 +26,13 @@ semantic rewrites:
 | HAL lookup | Standalone HAL adapter for `_hal[...]` named parameter reads. |
 | INI lookup | Standalone INI adapter around vendored LinuxCNC INI parser behavior. |
 | Canonical output | Canonical calls are captured as test events instead of driving hardware. |
+| Tool-data reload | LinuxCNC `RELOAD_TOOLDATA` is captured as a canonical test event; browser/native tool-table reload plumbing remains a future host/runtime adapter. |
+| Interpreter state tags | LinuxCNC `UPDATE_TAG` callbacks are captured from the state tags packed by vendored interpreter code; standalone code does not derive modal state. |
+| Rotary indexer lock state | LinuxCNC `UNLOCK_ROTARY` and `LOCK_ROTARY` callbacks are captured from the vendored single-axis indexer path; standalone code does not implement rotary-indexing semantics. |
+| File flush | LinuxCNC `FINISH` is captured as a canonical test event on the vendored `%`-delimited file-reading path. |
+| Interpreter reset | LinuxCNC `ON_RESET` is captured as a canonical test event on the vendored interpreter reset/file-open path. |
+| Interpreter init | LinuxCNC `INIT_CANON` and the canonical initialization sequence from vendored `Interp::init()` are captured as test events. |
+| Comment logging | LinuxCNC `LOGOPEN`, `LOG`, `LOGAPPEND`, and `LOGCLOSE` callbacks are captured as canonical test events instead of writing host log files. |
 | Python/remap | Python/remap hooks are stubbed at the runtime edge. |
 | Dynamic interpreter path | `interp_base.cc` probe uses standalone `EMC2_HOME` compile-time path boundary. |
 | Realtime scheduler | TP probes seed deterministic status/config data instead of running LinuxCNC realtime process topology. |
@@ -58,8 +65,10 @@ semantic rewrites:
 - Positive cutter-compensated motion and cutter compensation rejection paths
   now have standalone interpreter fixture coverage through vendored LinuxCNC
   source.
-- Fixture expectations are currently checked against the standalone vendored
-  source path, not by running a native LinuxCNC binary for every fixture.
+- Fixture expectations are checked against the standalone vendored source
+  path. A first upstream `rs274` side-by-side baseline now covers simple
+  parser/conversion fixtures; adapter-heavy fixtures still need dedicated
+  native LinuxCNC baselines.
 
 ## Current Drift Conclusion
 

wasm-port/docs/porting-steps-standalone.md

@@ -456,6 +456,58 @@ Current verified progress:
   `tests/fixtures/gcode/tool_table_setup.ngc` and
   `tests/fixtures/canon/tool_table_setup.events` pin `G10 L1` tool offset,
   diameter, front/back angle, and orientation behavior.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  the tool-data reload boundary call emitted by vendored
+  `interp_convert.cc::convert_modal_0()`: `RELOAD_TOOLDATA`.
+  `tests/fixtures/gcode/tool_reload.ngc` and
+  `tests/fixtures/canon/tool_reload.events` pin `G10 L0` dispatch without
+  adding standalone tool-table reload semantics.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  interpreter state-tag boundary calls emitted by vendored LinuxCNC
+  `interp_write.cc::write_state_tag()` and
+  `interp_convert.cc::update_tag()`: `UPDATE_TAG`.
+  `tests/fixtures/gcode/state_tag_motion.ngc` and
+  `tests/fixtures/canon/state_tag_motion.events` pin straight-motion state tag
+  emission without deriving modal state in standalone code.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  rotary indexer lock/unlock boundary calls emitted by vendored
+  `interp_convert.cc::issue_straight_index()`: `UNLOCK_ROTARY` and
+  `LOCK_ROTARY`. A dedicated `linuxcnc_indexer_harness` pins the LinuxCNC
+  single-axis `G0 A...` indexer path, including the surrounding motion-control
+  boundary calls, without adding standalone rotary-indexing semantics.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  the canonical flush boundary emitted by vendored LinuxCNC file-reading
+  code: `FINISH`. `tests/fixtures/gcode/percent_file_finish.ngc` and
+  `tests/fixtures/canon/percent_file_finish.events` pin `%`-delimited file
+  handling from `rs274ngc_pre.cc::open()` and `interp_read.cc::read_text()`.
+  The native verification script treats this fixture as file-mode-only
+  because `%` is a LinuxCNC program-file delimiter, not a valid MDI command.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  the reset/queue-drop boundary emitted by vendored
+  `rs274ngc_pre.cc::reset()`: `ON_RESET`.
+  `tests/fixtures/gcode/file_open_reset.ngc` and
+  `tests/fixtures/canon/file_open_reset.events` pin the LinuxCNC file-open
+  reset path without adding standalone queue-management semantics.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  the interpreter initialization boundary emitted by vendored
+  `rs274ngc_pre.cc::init()`: `INIT_CANON`. A dedicated
+  `linuxcnc_interp_init_harness` calls vendored `Interp::init()` and pins the
+  LinuxCNC initialization sequence: `INIT_CANON`, `USE_LENGTH_UNITS`,
+  `SET_G5X_OFFSET`, `SET_G92_OFFSET`, `SET_XY_ROTATION`, and
+  `SET_FEED_REFERENCE`, without changing the minimal G-code fixture harness
+  startup path.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  comment logging canonical boundary calls emitted by vendored
+  `interp_convert.cc::convert_comment()`: `LOGOPEN`, `LOG`, `LOGAPPEND`,
+  and `LOGCLOSE`. `tests/fixtures/gcode/comment_logging.ngc` and
+  `tests/fixtures/canon/comment_logging.events` pin LinuxCNC comment logging
+  dispatch without adding standalone comment semantics.
+- `tools/verify_native_linuxcnc_fixture_baseline.sh` now runs a first
+  side-by-side baseline against upstream `../linuxcnc/bin/rs274`. It normalizes
+  native LinuxCNC canonical output for simple parser/conversion fixtures
+  (`minimal_linear`, `length_units`, `plane_selection`, and
+  `modal_incremental`) and compares it with the standalone fixture events,
+  without introducing a project-authored CNC semantics oracle.
 - `tests/fixtures/gcode_errors/g1_zero_feed.ngc` and
   `tests/fixtures/canon_errors/g1_zero_feed.expected` pin the negative
   `G1` zero-feed case. The source basis is LinuxCNC

wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_indexer_harness.cpp

@@ -0,0 +1,51 @@
+#define private public
+#include "emc/rs274ngc/rs274ngc_interp.hh"
+#undef private
+
+#include <cstring>
+#include <iostream>
+
+#include "canon_event_sink.hh"
+#include "linuxcnc_hal_adapter.hh"
+#include "linuxcnc_tool_adapter.hh"
+
+namespace {
+
+void initialize_indexer_interp(Interp &interp)
+{
+    standalone::reset_hal_adapter();
+    standalone::reset_tool_adapter();
+
+    interp._setup.length_units = CANON_UNITS_MM;
+    interp._setup.distance_mode = DISTANCE_MODE::ABSOLUTE;
+    interp._setup.ijk_distance_mode = DISTANCE_MODE::ABSOLUTE;
+    interp._setup.feed_mode = FEED_MODE::UNITS_PER_MINUTE;
+    interp._setup.plane = CANON_PLANE::XY;
+    interp._setup.motion_mode = G_0;
+    interp._setup.percent_flag = false;
+    interp._setup.sequence_number = 1;
+    interp._setup.parameter_occurrence = 0;
+    interp._setup.num_spindles = 1;
+    interp._setup.a_indexer_jnum = 0;
+    interp._setup.parameters[5599] = 1.0;
+    std::memcpy(interp._readers, Interp::default_readers, sizeof(Interp::default_readers));
+}
+
+}  // namespace
+
+int main()
+{
+    Interp interp;
+    standalone::reset_canon_events();
+    initialize_indexer_interp(interp);
+
+    const int rc = interp.execute("G0 A90\n");
+    std::cout << "execute=" << rc << "\n";
+    std::cout << "post_a=" << interp._setup.AA_current << "\n";
+    std::cout << "canon_event_count=" << standalone::canon_events().size() << "\n";
+    for (const auto &event : standalone::canon_events()) {
+        std::cout << "canon_event=" << event << "\n";
+    }
+
+    return rc == INTERP_OK ? 0 : 1;
+}

wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_interp_init_harness.cpp

@@ -0,0 +1,49 @@
+#define private public
+#include "emc/rs274ngc/rs274ngc_interp.hh"
+#undef private
+
+#include <cstdlib>
+#include <filesystem>
+#include <iostream>
+#include <unistd.h>
+
+#include "canon_event_sink.hh"
+
+namespace {
+
+std::filesystem::path make_temp_dir()
+{
+    std::string pattern = "/tmp/linuxcnc-init-XXXXXX";
+    char *path = mkdtemp(pattern.data());
+    if (path == nullptr) {
+        std::perror("mkdtemp");
+        std::exit(2);
+    }
+    return path;
+}
+
+}  // namespace
+
+int main()
+{
+    const auto temp_dir = make_temp_dir();
+    std::filesystem::current_path(temp_dir);
+
+    Interp interp;
+    standalone::reset_canon_events();
+
+    const int rc = interp.init();
+    std::cout << "init=" << rc << "\n";
+    std::cout << "setup.length_units=" << static_cast<int>(interp._setup.length_units) << "\n";
+    std::cout << "setup.origin_index=" << interp._setup.origin_index << "\n";
+    std::cout << "setup.distance_mode=" << static_cast<int>(interp._setup.distance_mode) << "\n";
+    std::cout << "setup.feed_mode=" << static_cast<int>(interp._setup.feed_mode) << "\n";
+    std::cout << "setup.motion_mode=" << interp._setup.motion_mode << "\n";
+    std::cout << "canon_event_count=" << standalone::canon_events().size() << "\n";
+    for (const auto &event : standalone::canon_events()) {
+        std::cout << "canon_event=" << event << "\n";
+    }
+
+    std::filesystem::remove_all(temp_dir);
+    return rc == INTERP_OK ? 0 : 1;
+}

wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp

@@ -36,8 +36,8 @@ const std::vector<std::string> &canon_events()
 }  // namespace standalone
 
 bool GET_BLOCK_DELETE(void) { return false; }
-void FINISH(void) {}
-void ON_RESET(void) {}
+void FINISH(void) { standalone::push_canon_event("FINISH"); }
+void ON_RESET(void) { standalone::push_canon_event("ON_RESET"); }
 
 USER_DEFINED_FUNCTION_TYPE USER_DEFINED_FUNCTION[USER_DEFINED_FUNCTION_NUM] = {};
 
@@ -50,7 +50,7 @@ int USER_DEFINED_FUNCTION_ADD(USER_DEFINED_FUNCTION_TYPE func, int num)
     return num;
 }
 
-void INIT_CANON() {}
+void INIT_CANON() { standalone::push_canon_event("INIT_CANON"); }
 void SET_G5X_OFFSET(int index,
                     double x, double y, double z,
                     double a, double b, double c,
@@ -307,7 +307,7 @@ void CHANGE_TOOL_NUMBER(int pocket)
     oss << "CHANGE_TOOL_NUMBER pocket=" << pocket;
     standalone::push_canon_event(oss.str());
 }
-void RELOAD_TOOLDATA(void) {}
+void RELOAD_TOOLDATA(void) { standalone::push_canon_event("RELOAD_TOOLDATA"); }
 void CLAMP_AXIS(CANON_AXIS) {}
 void DISABLE_ADAPTIVE_FEED() { standalone::push_canon_event("DISABLE_ADAPTIVE_FEED"); }
 void ENABLE_ADAPTIVE_FEED() { standalone::push_canon_event("ENABLE_ADAPTIVE_FEED"); }
@@ -390,15 +390,52 @@ int WAIT(int index, int input_type, int wait_type, double timeout)
     standalone::push_canon_event(oss.str());
     return 0;
 }
-int UNLOCK_ROTARY(int, int) { return 0; }
-int LOCK_ROTARY(int, int) { return 0; }
-void UPDATE_TAG(const StateTag &) {}
+int UNLOCK_ROTARY(int line_no, int joint_num)
+{
+    std::ostringstream oss;
+    oss << "UNLOCK_ROTARY line=" << line_no << " joint=" << joint_num;
+    standalone::push_canon_event(oss.str());
+    return 0;
+}
+int LOCK_ROTARY(int line_no, int joint_num)
+{
+    std::ostringstream oss;
+    oss << "LOCK_ROTARY line=" << line_no << " joint=" << joint_num;
+    standalone::push_canon_event(oss.str());
+    return 0;
+}
+void UPDATE_TAG(const StateTag &tag)
+{
+    std::ostringstream oss;
+    oss << "UPDATE_TAG"
+        << " line=" << tag.fields[GM_FIELD_LINE_NUMBER]
+        << " g0=" << tag.fields[GM_FIELD_G_MODE_0]
+        << " motion=" << tag.fields[GM_FIELD_MOTION_MODE]
+        << " plane=" << tag.fields[GM_FIELD_PLANE]
+        << " origin=" << tag.fields[GM_FIELD_ORIGIN]
+        << " feed=" << tag.fields_float[GM_FIELD_FLOAT_FEED]
+        << " speed=" << tag.fields_float[GM_FIELD_FLOAT_SPEED]
+        << " flags=" << tag.flags.to_ulong();
+    standalone::push_canon_event(oss.str());
+}
 
 void MESSAGE(char *s) { standalone::push_canon_event(std::string("MESSAGE: ") + (s ? s : "")); }
-void LOG(char *) {}
-void LOGOPEN(char *) {}
-void LOGAPPEND(char *) {}
-void LOGCLOSE() {}
+void LOG(char *s)
+{
+    standalone::push_canon_event(std::string("LOG: ") + (s ? s : ""));
+}
+void LOGOPEN(char *s)
+{
+    standalone::push_canon_event(std::string("LOGOPEN: ") + (s ? s : ""));
+}
+void LOGAPPEND(char *s)
+{
+    standalone::push_canon_event(std::string("LOGAPPEND: ") + (s ? s : ""));
+}
+void LOGCLOSE()
+{
+    standalone::push_canon_event("LOGCLOSE");
+}
 
 void CANON_ERROR(const char *fmt, ...)
 {

wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_runtime_state_stubs.cpp

@@ -187,9 +187,9 @@ setup::setup()
       a_axis_wrapped(0),
       b_axis_wrapped(0),
       c_axis_wrapped(0),
-      a_indexer_jnum(0),
-      b_indexer_jnum(0),
-      c_indexer_jnum(0),
+      a_indexer_jnum(-1),
+      b_indexer_jnum(-1),
+      c_indexer_jnum(-1),
       lathe_diameter_mode(0),
       mdi_interrupt(0),
       feature_set(0),

wasm-port/tests/fixtures/canon/comment_logging.events

@@ -0,0 +1,4 @@
+canon_event=LOGOPEN: session.log
+canon_event=LOG: feed log line
+canon_event=LOGAPPEND: append log line
+canon_event=LOGCLOSE

wasm-port/tests/fixtures/canon/file_open_reset.events

@@ -0,0 +1,2 @@
+canon_event=ON_RESET
+canon_event=STRAIGHT_TRAVERSE line=1 x=1 y=0 z=0 a=0 b=0 c=0 u=0 v=0 w=0

wasm-port/tests/fixtures/canon/percent_file_finish.events

@@ -0,0 +1,2 @@
+canon_event=STRAIGHT_TRAVERSE line=2 x=1 y=0 z=0 a=0 b=0 c=0 u=0 v=0 w=0
+canon_event=FINISH

wasm-port/tests/fixtures/canon/state_tag_motion.events

@@ -0,0 +1,2 @@
+canon_event=UPDATE_TAG line=1
+canon_event=UPDATE_TAG line=2

wasm-port/tests/fixtures/canon/tool_reload.events

@@ -0,0 +1 @@
+canon_event=RELOAD_TOOLDATA

wasm-port/tests/fixtures/gcode/comment_logging.ngc

@@ -0,0 +1,4 @@
+(LOGOPEN,session.log)
+(LOG,feed log line)
+(LOGAPPEND,append log line)
+(LOGCLOSE)

wasm-port/tests/fixtures/gcode/file_open_reset.ngc

@@ -0,0 +1 @@
+G0 X1

wasm-port/tests/fixtures/gcode/percent_file_finish.ngc

@@ -0,0 +1,3 @@
+%
+G0 X1
+%

wasm-port/tests/fixtures/gcode/state_tag_motion.ngc

@@ -0,0 +1,2 @@
+G90 G17 G0 X1 Y2
+G1 X3 Y4 F120

wasm-port/tests/fixtures/gcode/tool_reload.ngc

@@ -0,0 +1 @@
+G10 L0

wasm-port/tests/native/verify_native_probes.sh

@@ -12,6 +12,7 @@ NAMEDPARAM_INI_FIXTURE="$ROOT_DIR/tests/fixtures/ini/namedparams.ini"
 "$ROOT_DIR/tools/verify_upstream_baseline.sh"
 "$ROOT_DIR/tools/verify_vendor_sync.sh"
 "$ROOT_DIR/tools/verify_no_standalone_cnc_semantics.sh"
+"$ROOT_DIR/tools/verify_native_linuxcnc_fixture_baseline.sh"
 "$ROOT_DIR/tools/build_native_probes.sh"
 
 check_source_probe_coverage() {
@@ -152,6 +153,10 @@ check_exitcode linuxcnc_interp_minimal_harness
 check_exitcode linuxcnc_interp_minimal_harness.run
 check_exitcode linuxcnc_parameter_file_harness
 check_exitcode linuxcnc_parameter_file_harness.run
+check_exitcode linuxcnc_interp_init_harness
+check_exitcode linuxcnc_interp_init_harness.run
+check_exitcode linuxcnc_indexer_harness
+check_exitcode linuxcnc_indexer_harness.run
 check_exitcode linuxcnc_rs274_compile_probe
 check_exitcode linuxcnc_kins_util_source_probe
 check_exitcode linuxcnc_cubic_source_probe
@@ -238,6 +243,31 @@ grep -Fq "saved_has_5399=1" "$PARAMETER_FILE_STDOUT"
 grep -Fq "saved_has_named_param=0" "$PARAMETER_FILE_STDOUT"
 grep -Fq "backup_has_original_5161=1" "$PARAMETER_FILE_STDOUT"
 
+INIT_HARNESS_STDOUT="$BUILD_DIR/linuxcnc_interp_init_harness.run.stdout.log"
+grep -Fq "init=0" "$INIT_HARNESS_STDOUT"
+grep -Fq "setup.length_units=2" "$INIT_HARNESS_STDOUT"
+grep -Fq "setup.origin_index=1" "$INIT_HARNESS_STDOUT"
+grep -Fq "setup.distance_mode=0" "$INIT_HARNESS_STDOUT"
+grep -Fq "setup.feed_mode=0" "$INIT_HARNESS_STDOUT"
+grep -Fq "setup.motion_mode=800" "$INIT_HARNESS_STDOUT"
+grep -Fq "canon_event=INIT_CANON" "$INIT_HARNESS_STDOUT"
+grep -Fq "canon_event=USE_LENGTH_UNITS units=2" "$INIT_HARNESS_STDOUT"
+grep -Fq "canon_event=SET_G5X_OFFSET index=1" "$INIT_HARNESS_STDOUT"
+grep -Fq "canon_event=SET_G92_OFFSET x=0 y=0 z=0" "$INIT_HARNESS_STDOUT"
+grep -Fq "canon_event=SET_XY_ROTATION rotation=0" "$INIT_HARNESS_STDOUT"
+grep -Fq "canon_event=SET_FEED_REFERENCE reference=2" "$INIT_HARNESS_STDOUT"
+
+INDEXER_HARNESS_STDOUT="$BUILD_DIR/linuxcnc_indexer_harness.run.stdout.log"
+grep -Fq "execute=0" "$INDEXER_HARNESS_STDOUT"
+grep -Fq "post_a=90" "$INDEXER_HARNESS_STDOUT"
+grep -Fq "canon_event=SET_MOTION_CONTROL_MODE mode=2 tolerance=0" "$INDEXER_HARNESS_STDOUT"
+grep -Fq "canon_event=UNLOCK_ROTARY line=1 joint=0" "$INDEXER_HARNESS_STDOUT"
+grep -Fq "canon_event=STRAIGHT_TRAVERSE line=1 x=0 y=0 z=0 a=90 b=0 c=0 u=0 v=0 w=0" "$INDEXER_HARNESS_STDOUT"
+grep -Fq "canon_event=LOCK_ROTARY line=1 joint=0" "$INDEXER_HARNESS_STDOUT"
+grep -Fq "canon_event=SET_MOTION_CONTROL_MODE mode=1 tolerance=0" "$INDEXER_HARNESS_STDOUT"
+grep -Fq "canon_event=SET_NAIVECAM_TOLERANCE tolerance=0" "$INDEXER_HARNESS_STDOUT"
+grep -Fq "canon_event=UPDATE_TAG line=1" "$INDEXER_HARNESS_STDOUT"
+
 TP_API_STDOUT="$BUILD_DIR/linuxcnc_tp_api_probe.run.stdout.log"
 grep -Fq "tp_default_queue_size=32" "$TP_API_STDOUT"
 grep -Fq "tp_err_ok=0" "$TP_API_STDOUT"
@@ -438,10 +468,10 @@ check_fixture_output() {
   local stdout_file="$3"
   local require_mdi="${4:-1}"
 
+  if [[ "$require_mdi" == "1" ]]; then
     grep -Fq "read=0" "$stdout_file"
     grep -Fq "parse_line=0" "$stdout_file"
 
-  if [[ "$require_mdi" == "1" ]]; then
     local line_count
     line_count="$(grep -cv '^[[:space:]]*$' "$fixture")"
     local line_number
@@ -484,7 +514,7 @@ for fixture in "$GCODE_FIXTURE_DIR"/*.ngc; do
     >"$stdout_file" \
     2>"$stderr_file"
   require_mdi=1
-  if [[ "$name" == "oword_subroutine" ]]; then
+  if [[ "$name" == "oword_subroutine" || "$name" == "percent_file_finish" ]]; then
     require_mdi=0
   fi
   check_fixture_output "$fixture" "$expected" "$stdout_file" "$require_mdi"

wasm-port/tools/build_native_probes.sh

@@ -629,6 +629,16 @@ PARAMETER_FILE_SOURCES=(
   "$WRAP_DIR/linuxcnc_parameter_file_harness.cpp"
 )
 
+INIT_HARNESS_SOURCES=(
+  "${INTERP_CORE_SOURCES[@]}"
+  "$WRAP_DIR/linuxcnc_interp_init_harness.cpp"
+)
+
+INDEXER_HARNESS_SOURCES=(
+  "${INTERP_CORE_SOURCES[@]}"
+  "$WRAP_DIR/linuxcnc_indexer_harness.cpp"
+)
+
 build_binary_target \
   linuxcnc_ini_probe \
   "$BUILD_DIR/linuxcnc_ini_probe" \
@@ -1123,6 +1133,52 @@ else
     "$BUILD_DIR/linuxcnc_parameter_file_harness.run.stderr.log"
 fi
 
+build_binary_target \
+  linuxcnc_interp_init_harness \
+  "$BUILD_DIR/linuxcnc_interp_init_harness" \
+  MINIMAL_FLAGS \
+  INIT_HARNESS_SOURCES \
+  MINIMAL_LINK_FLAGS \
+  -lfmt
+
+if [[ "$(tr -d '[:space:]' < "$BUILD_DIR/linuxcnc_interp_init_harness.exitcode")" == "0" ]]; then
+  set +e
+  "$BUILD_DIR/linuxcnc_interp_init_harness" \
+    >"$BUILD_DIR/linuxcnc_interp_init_harness.run.stdout.log" \
+    2>"$BUILD_DIR/linuxcnc_interp_init_harness.run.stderr.log"
+  INTERP_INIT_RUN_RC=$?
+  set -e
+  echo "$INTERP_INIT_RUN_RC" > "$BUILD_DIR/linuxcnc_interp_init_harness.run.exitcode"
+else
+  rm -f \
+    "$BUILD_DIR/linuxcnc_interp_init_harness.run.exitcode" \
+    "$BUILD_DIR/linuxcnc_interp_init_harness.run.stdout.log" \
+    "$BUILD_DIR/linuxcnc_interp_init_harness.run.stderr.log"
+fi
+
+build_binary_target \
+  linuxcnc_indexer_harness \
+  "$BUILD_DIR/linuxcnc_indexer_harness" \
+  MINIMAL_FLAGS \
+  INDEXER_HARNESS_SOURCES \
+  MINIMAL_LINK_FLAGS \
+  -lfmt
+
+if [[ "$(tr -d '[:space:]' < "$BUILD_DIR/linuxcnc_indexer_harness.exitcode")" == "0" ]]; then
+  set +e
+  "$BUILD_DIR/linuxcnc_indexer_harness" \
+    >"$BUILD_DIR/linuxcnc_indexer_harness.run.stdout.log" \
+    2>"$BUILD_DIR/linuxcnc_indexer_harness.run.stderr.log"
+  INDEXER_RUN_RC=$?
+  set -e
+  echo "$INDEXER_RUN_RC" > "$BUILD_DIR/linuxcnc_indexer_harness.run.exitcode"
+else
+  rm -f \
+    "$BUILD_DIR/linuxcnc_indexer_harness.run.exitcode" \
+    "$BUILD_DIR/linuxcnc_indexer_harness.run.stdout.log" \
+    "$BUILD_DIR/linuxcnc_indexer_harness.run.stderr.log"
+fi
+
 build_object_target \
   linuxcnc_rs274_compile_probe \
   "$BUILD_DIR/linuxcnc_rs274_compile_probe.o" \

wasm-port/tools/verify_native_linuxcnc_fixture_baseline.sh

@@ -0,0 +1,186 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+UPSTREAM_RS274="$ROOT_DIR/../linuxcnc/bin/rs274"
+GCODE_FIXTURE_DIR="$ROOT_DIR/tests/fixtures/gcode"
+CANON_FIXTURE_DIR="$ROOT_DIR/tests/fixtures/canon"
+
+FIXTURES=(
+  minimal_linear
+  length_units
+  plane_selection
+  modal_incremental
+)
+
+if [[ ! -x "$UPSTREAM_RS274" ]]; then
+  echo "missing upstream rs274 executable: $UPSTREAM_RS274" >&2
+  exit 1
+fi
+
+TMP_DIR="$(mktemp -d)"
+trap 'rm -rf "$TMP_DIR"' EXIT
+
+normalize_standalone_events() {
+  awk '
+    function norm(value) {
+      return sprintf("%.12g", value + 0)
+    }
+
+    /^canon_event=/ {
+      line = $0
+      sub(/^canon_event=/, "", line)
+
+      if (line ~ /^SELECT_PLANE plane=/) {
+        value = line
+        sub(/^SELECT_PLANE plane=/, "", value)
+        if (value == "1") {
+          print "SELECT_PLANE|XY"
+        } else if (value == "2") {
+          print "SELECT_PLANE|YZ"
+        } else if (value == "3") {
+          print "SELECT_PLANE|XZ"
+        }
+        next
+      }
+
+      if (line ~ /^USE_LENGTH_UNITS units=/) {
+        value = line
+        sub(/^USE_LENGTH_UNITS units=/, "", value)
+        if (value == "1") {
+          print "USE_LENGTH_UNITS|INCHES"
+        } else if (value == "2") {
+          print "USE_LENGTH_UNITS|MM"
+        }
+        next
+      }
+
+      if (line ~ /^SET_FEED_RATE rate=/) {
+        value = line
+        sub(/^SET_FEED_RATE rate=/, "", value)
+        print "SET_FEED_RATE|" norm(value)
+        next
+      }
+
+      if (line ~ /^STRAIGHT_(TRAVERSE|FEED) /) {
+        split(line, fields, /[[:space:]]+/)
+        for (i in fields) {
+          split(fields[i], pair, "=")
+          values[pair[1]] = pair[2]
+        }
+        print fields[1] "|" norm(values["x"]) "|" norm(values["y"]) "|" \
+          norm(values["z"]) "|" norm(values["a"]) "|" norm(values["b"]) "|" \
+          norm(values["c"])
+        delete values
+        next
+      }
+    }
+  '
+}
+
+normalize_upstream_rs274_output() {
+  awk '
+    function norm(value) {
+      return sprintf("%.12g", value + 0)
+    }
+
+    function args_of(call, args) {
+      args = call
+      sub(/^[^(]+\(/, "", args)
+      sub(/\).*$/, "", args)
+      gsub(/[[:space:]]/, "", args)
+      return args
+    }
+
+    /^[[:space:]]*[0-9]+[[:space:]]+N\.\.\.\.\./ {
+      line = $0
+      sub(/^[[:space:]]*[0-9]+[[:space:]]+N\.\.\.\.\.[[:space:]]+/, "", line)
+
+      if (line == "ON_RESET()") {
+        seen_reset = 1
+        next
+      }
+
+      if (!seen_reset) {
+        next
+      }
+
+      if (line ~ /^SELECT_PLANE\(CANON_PLANE_/) {
+        value = line
+        sub(/^SELECT_PLANE\(CANON_PLANE_/, "", value)
+        sub(/\)$/, "", value)
+        print "SELECT_PLANE|" value
+        next
+      }
+
+      if (line ~ /^USE_LENGTH_UNITS\(CANON_UNITS_/) {
+        value = line
+        sub(/^USE_LENGTH_UNITS\(CANON_UNITS_/, "", value)
+        sub(/\)$/, "", value)
+        print "USE_LENGTH_UNITS|" value
+        next
+      }
+
+      if (line ~ /^SET_FEED_RATE\(/) {
+        args = args_of(line)
+        print "SET_FEED_RATE|" norm(args)
+        next
+      }
+
+      if (line ~ /^STRAIGHT_(TRAVERSE|FEED)\(/) {
+        op = line
+        sub(/\(.*/, "", op)
+        args = args_of(line)
+        split(args, values, ",")
+        print op "|" norm(values[1]) "|" norm(values[2]) "|" norm(values[3]) "|" \
+          norm(values[4]) "|" norm(values[5]) "|" norm(values[6])
+        next
+      }
+    }
+  '
+}
+
+for name in "${FIXTURES[@]}"; do
+  gcode_file="$GCODE_FIXTURE_DIR/$name.ngc"
+  expected_file="$CANON_FIXTURE_DIR/$name.events"
+  native_raw="$TMP_DIR/$name.rs274.raw"
+  native_norm="$TMP_DIR/$name.rs274.normalized"
+  expected_norm="$TMP_DIR/$name.expected.normalized"
+
+  if [[ ! -f "$gcode_file" ]]; then
+    echo "missing G-code fixture: $gcode_file" >&2
+    exit 1
+  fi
+
+  if [[ ! -f "$expected_file" ]]; then
+    echo "missing canonical fixture: $expected_file" >&2
+    exit 1
+  fi
+
+  set +e
+  "$UPSTREAM_RS274" -g "$gcode_file" > "$native_raw" 2>&1
+  rs274_rc=$?
+  set -e
+
+  if [[ "$rs274_rc" != "0" ]] && ! grep -Fq "File ended with no percent sign (%) or program end (M2)" "$native_raw"; then
+    echo "upstream rs274 failed for fixture: $name" >&2
+    sed -n '1,160p' "$native_raw" >&2
+    exit 1
+  fi
+
+  normalize_upstream_rs274_output < "$native_raw" > "$native_norm"
+  normalize_standalone_events < "$expected_file" > "$expected_norm"
+
+  if [[ ! -s "$native_norm" ]]; then
+    echo "no normalized upstream rs274 events for fixture: $name" >&2
+    sed -n '1,160p' "$native_raw" >&2
+    exit 1
+  fi
+
+  if ! diff -u "$expected_norm" "$native_norm"; then
+    echo "native LinuxCNC rs274 baseline mismatch for fixture: $name" >&2
+    exit 1
+  fi
+done
+
+echo "native LinuxCNC fixture baseline validation complete"