Blake3 syscall (#17358)

sdk/bpf/c/inc/solana_sdk.h

@@ -457,6 +457,24 @@ uint64_t sol_keccak256(
     uint8_t *result
 );
 
+/**
+ * Length of a Blake3 hash result
+ */
+#define BLAKE3_RESULT_LENGTH 32
+
+/**
+ * Blake3
+ *
+ * @param bytes Array of byte arrays
+ * @param bytes_len Number of byte arrays
+ * @param result 32 byte array to hold the result
+ */
+uint64_t sol_blake3(
+    const SolBytes *bytes,
+    int bytes_len,
+    const uint8_t *result
+);
+
 /**
  * Account Meta
  */