Harden LinuxCNC wasm and native probe workflows

test-linuxcnc-wasm-tooldata-mmap-symbols.sh

@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$(dirname "$0")"
+
+linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
+cxx=${CXX:-g++}
+build_dir=$(mktemp -d "${TMPDIR:-/tmp}/cnc_sim_linuxcnc_wasm_tooldata_mmap_symbols.XXXXXX")
+
+if [[ ! -d "$linuxcnc_root" ]]; then
+    echo "missing LinuxCNC root: $linuxcnc_root" >&2
+    exit 1
+fi
+trap 'rm -rf "$build_dir"' EXIT
+
+common_flags=(
+    -std=c++17
+    -DULAPI
+    -I "$(pwd)/core/wasm_shims"
+    -I "$linuxcnc_root/src"
+    -I "$linuxcnc_root/src/emc"
+    -I "$linuxcnc_root/src/emc/nml_intf"
+    -I "$linuxcnc_root/src/emc/rs274ngc"
+    -I "$linuxcnc_root/src/emc/motion"
+    -I "$linuxcnc_root/include"
+)
+
+"$cxx" "${common_flags[@]}" \
+    -c core/wasm_shims/tooldata/tooldata_mmap_backend.cc \
+    -o "$build_dir/tooldata_mmap_backend.o"
+
+nm --defined-only "$build_dir/tooldata_mmap_backend.o" \
+    | awk '$2 ~ /^[A-Z]$/ {print $3}' \
+    | LC_ALL=C sort -u \
+    > "$build_dir/backend.exports"
+
+expected_exports=(
+    tool_mmap_close
+    tool_mmap_creator
+    tool_mmap_is_random_toolchanger
+    tool_mmap_user
+    tooldata_find_index_for_tool
+    tooldata_get
+    tooldata_last_index_get
+    tooldata_last_index_set
+    tooldata_put
+    tooldata_reset
+)
+
+printf '%s\n' "${expected_exports[@]}" | LC_ALL=C sort -u > "$build_dir/expected.exports"
+
+if ! comm -23 "$build_dir/expected.exports" "$build_dir/backend.exports" > "$build_dir/missing.exports"; then
+    exit 1
+fi
+
+if [[ -s "$build_dir/missing.exports" ]]; then
+    echo "missing wasm tooldata mmap backend exports:" >&2
+    cat "$build_dir/missing.exports" >&2
+    exit 1
+fi
+
+comm -13 "$build_dir/expected.exports" "$build_dir/backend.exports" > "$build_dir/unexpected.exports"
+if [[ -s "$build_dir/unexpected.exports" ]]; then
+    echo "unexpected wasm tooldata mmap backend exports:" >&2
+    cat "$build_dir/unexpected.exports" >&2
+    exit 1
+fi
+
+echo "linuxcnc wasm tooldata_mmap symbol probe passed"