Initial LinuxCNC WebAssembly workspace snapshot

wasm-core/include/sim_api.h

@@ -0,0 +1,34 @@
+#ifndef LINUXCNC_WEB_WASM_SIM_API_H
+#define LINUXCNC_WEB_WASM_SIM_API_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum sim_result {
+    SIM_OK = 0,
+    SIM_ERR_INVALID_ARGUMENT = -1,
+    SIM_ERR_NOT_CREATED = -2,
+    SIM_ERR_BUFFER_TOO_SMALL = -3,
+    SIM_ERR_INVALID_STATE = -4,
+    SIM_ERR_UNSUPPORTED = -5,
+};
+
+/* Bootstrap ABI only. LinuxCNC behavior is added behind this stable boundary. */
+int32_t sim_create(const uint8_t *config, uint32_t config_len);
+int32_t sim_load_workspace(const char *root_path);
+int32_t sim_command(const uint8_t *command, uint32_t command_len);
+int32_t sim_step(uint32_t cycles);
+uint32_t sim_read_snapshot(uint8_t *out, uint32_t capacity);
+uint32_t sim_read_event(uint8_t *out, uint32_t capacity);
+int32_t sim_export_state(uint8_t *out, uint32_t capacity);
+int32_t sim_import_state(const uint8_t *data, uint32_t len);
+void sim_destroy(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif