Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / SLOF / clients / net-snk / libc / sbrk.c

diff --git a/qemu/roms/SLOF/clients/net-snk/libc/sbrk.c b/qemu/roms/SLOF/clients/net-snk/libc/sbrk.c
new file mode 100644 (file)
index 0000000..2ec1b5f
--- /dev/null
+++ b/qemu/roms/SLOF/clients/net-snk/libc/sbrk.c
@@ -0,0 +1,39 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <unistd.h>
+
+#define HEAP_SIZE 0x200000
+
+
+static char heap[HEAP_SIZE];
+static char *actptr;
+
+void *sbrk(int increment)
+{
+       char *oldptr;
+
+       /* Called for the first time? Then init the actual pointer */
+       if (!actptr) {
+               actptr = heap;
+       }
+
+       if (actptr + increment > heap + HEAP_SIZE) {
+               /* Out of memory */
+               return (void *)-1;
+       }
+
+       oldptr = actptr;
+       actptr += increment;
+
+       return oldptr;
+}