From: Michael Brown <mcb30@etherboot.org>
Date: Thu, 11 Jan 2007 23:19:31 +0000 (+0000)
Subject: alloca() can be useful in some (limited) circumstances.
X-Git-Tag: mcb-xen-demo~106
X-Git-Url: http://git.etherboot.org/people/xl0/gpxe.git/commitdiff_plain/79a399c05ab3ee9575c964727c9aea59ee65dae6

alloca() can be useful in some (limited) circumstances.
---

diff --git a/src/include/alloca.h b/src/include/alloca.h
new file mode 100644
index 00000000..08398fb3
--- /dev/null
+++ b/src/include/alloca.h
@@ -0,0 +1,25 @@
+#ifndef _ALLOCA_H
+#define _ALLOCA_H
+
+/**
+ * @file
+ *
+ * Temporary memory allocation
+ *
+ */
+
+#include <stdint.h>
+
+/**
+ * Allocate temporary memory from the stack
+ *
+ * @v size		Size to allocate
+ * @ret ptr		Allocated memory
+ *
+ * This memory will be freed automatically when the containing
+ * function returns.  There are several caveats regarding use of
+ * alloca(); use it only if you already know what they are.
+ */
+#define alloca(size) __builtin_alloca ( size )
+
+#endif /* _ALLOCA_H */