Initial LinuxCNC WebAssembly workspace snapshot

wasm-core/include/sim_event.h

@@ -0,0 +1,42 @@
+#ifndef LINUXCNC_WEB_WASM_SIM_EVENT_H
+#define LINUXCNC_WEB_WASM_SIM_EVENT_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SIM_EVENT_KIND_CAPACITY 32U
+#define SIM_EVENT_CAPACITY 256U
+
+enum sim_event_result {
+    SIM_EVENT_OK = 0,
+    SIM_EVENT_ERR_SEQUENCE = -200,
+    SIM_EVENT_ERR_TICK = -201,
+    SIM_EVENT_ERR_ARGUMENT = -202,
+    SIM_EVENT_ERR_FULL = -203,
+    SIM_EVENT_ERR_BUFFER = -204,
+};
+
+typedef struct sim_event_record {
+    uint32_t seq;
+    uint32_t tick;
+    uint64_t payload_hash;
+    char kind[SIM_EVENT_KIND_CAPACITY];
+} sim_event_record;
+
+void sim_event_reset(void);
+int32_t sim_event_append(uint32_t seq, uint32_t tick, const char *kind,
+                         const uint8_t *payload, uint32_t payload_len);
+uint32_t sim_event_count(void);
+uint32_t sim_event_cursor(void);
+uint32_t sim_event_read(uint32_t index, uint8_t *out, uint32_t capacity);
+uint32_t sim_event_export(uint8_t *out, uint32_t capacity);
+int32_t sim_event_import(const uint8_t *data, uint32_t len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif