summaryrefslogtreecommitdiffstats
path: root/qemu/roms/SLOF/clients/net-snk/libc/sbrk.c
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/roms/SLOF/clients/net-snk/libc/sbrk.c')
-rw-r--r--qemu/roms/SLOF/clients/net-snk/libc/sbrk.c39
1 files changed, 39 insertions, 0 deletions
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
index 000000000..2ec1b5f12
--- /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;
+}