1 files changed, 34 insertions, 0 deletions
diff --git a/libgo/runtime/go-rec-big.c b/libgo/runtime/go-rec-big.c
new file mode 100644
index 0000000000..23d65296aa
--- /dev/null
+++ b/libgo/runtime/go-rec-big.c
@@ -0,0 +1,34 @@
+/* go-rec-big.c -- receive something larger than 64 bits on a channel.
+
+   Copyright 2009 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include <stdint.h>
+
+#include "go-panic.h"
+#include "channel.h"
+
+void
+__go_receive_big (struct __go_channel *channel, void *val, _Bool for_select)
+{
+  size_t alloc_size;
+  size_t offset;
+
+  if (channel == NULL)
+    __go_panic_msg ("receive from nil channel");
+
+  alloc_size = ((channel->element_size + sizeof (uint64_t) - 1)
+		/ sizeof (uint64_t));
+
+  if (!__go_receive_acquire (channel, for_select))
+    {
+      __builtin_memset (val, 0, channel->element_size);
+      return;
+    }
+
+  offset = channel->next_fetch * alloc_size;
+  __builtin_memcpy (val, &channel->data[offset], channel->element_size);
+
+  __go_receive_release (channel);
+}