These changes are the raw update to qemu-2.6.

[kvmfornfv.git] / qemu / roms / SLOF / lib / libhvcall / rfill.c

diff --git a/qemu/roms/SLOF/lib/libhvcall/rfill.c b/qemu/roms/SLOF/lib/libhvcall/rfill.c
new file mode 100644 (file)
index 0000000..5407cd2
--- /dev/null
+++ b/qemu/roms/SLOF/lib/libhvcall/rfill.c
@@ -0,0 +1,38 @@
+/*****************************************************************************
+ * Fast function for filling cache-inhibited memory regions via h-call.
+ *
+ * Copyright 2015 Red Hat, Inc.
+ *
+ * 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:
+ *     Thomas Huth, Red Hat Inc. - initial implementation
+ *****************************************************************************/
+
+#include <cache.h>
+#include <string.h>
+
+typedef unsigned long type_u;
+
+/**
+ * fast_rfill is the implementation of the FAST_RFILL macro with h-calls.
+ * This is defined here instead of cache.h since we need a temporary
+ * local buffer - and that caused stack size problems in engine() when
+ * we used it directly in the FAST_RFILL macro.
+ */
+void fast_rfill(char *dst, long size, char pat)
+{
+       type_u buf[64];
+
+       memset(buf, pat, size < sizeof(buf) ? size : sizeof(buf));
+
+       while (size > sizeof(buf)) {
+               FAST_MRMOVE(buf, dst, sizeof(buf));
+               dst += sizeof(buf);
+               size -= sizeof(buf);
+       }
+       FAST_MRMOVE(buf, dst, size);
+}