diff --git a/rsHandcode.h b/rsHandcode.h
new file mode 100644
index 0000000..800eddd
--- /dev/null
+++ b/rsHandcode.h
@@ -0,0 +1,47 @@
+
+#define DATA_SYNC_SIZE 1024
+
+static inline void rsHCAPI_AllocationData (RsContext rsc, RsAllocation va, const void * data, uint32_t sizeBytes)
+{
+    ThreadIO *io = &((Context *)rsc)->mIO;
+    uint32_t size = sizeof(RS_CMD_AllocationData);
+    if (sizeBytes < DATA_SYNC_SIZE) {
+        size += (sizeBytes + 3) & ~3;
+    }
+    RS_CMD_AllocationData *cmd = static_cast<RS_CMD_AllocationData *>(io->mToCore.reserve(size));
+    cmd->va = va;
+    cmd->bytes = sizeBytes;
+    cmd->data = data;
+    if (sizeBytes < DATA_SYNC_SIZE) {
+        cmd->data = (void *)(cmd+1);
+        memcpy(cmd+1, data, sizeBytes);
+        io->mToCore.commit(RS_CMD_ID_AllocationData, size);
+    } else {
+        io->mToCore.commitSync(RS_CMD_ID_AllocationData, size);
+    }
+}
+
+
+static inline void rsHCAPI_Allocation1DSubData (RsContext rsc, RsAllocation va, uint32_t xoff, uint32_t count, const void * data, uint32_t sizeBytes)
+{
+    ThreadIO *io = &((Context *)rsc)->mIO;
+    uint32_t size = sizeof(RS_CMD_Allocation1DSubData);
+    if (sizeBytes < DATA_SYNC_SIZE) {
+        size += (sizeBytes + 3) & ~3;
+    }
+    RS_CMD_Allocation1DSubData *cmd = static_cast<RS_CMD_Allocation1DSubData *>(io->mToCore.reserve(size));
+    cmd->va = va;
+    cmd->xoff = xoff;
+    cmd->count = count;
+    cmd->data = data;
+    cmd->bytes = sizeBytes;
+    if (sizeBytes < DATA_SYNC_SIZE) {
+        cmd->data = (void *)(cmd+1);
+        memcpy(cmd+1, data, sizeBytes);
+        io->mToCore.commit(RS_CMD_ID_Allocation1DSubData, size);
+    } else {
+        io->mToCore.commitSync(RS_CMD_ID_Allocation1DSubData, size);
+    }
+
+}
+