1 files changed, 39 insertions, 0 deletions
diff --git a/roms/qemu-palcode/util.c b/roms/qemu-palcode/util.c
new file mode 100644
index 000000000..0e943be33
--- /dev/null
+++ b/roms/qemu-palcode/util.c
@@ -0,0 +1,39 @@
+/* Utility functions for the QEMU PALcode.
+
+   Copyright (C) 2011 Richard Henderson
+
+   This file is part of QEMU PALcode.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the text
+   of the GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "protos.h"
+
+static inline long
+ndelay_with_int(unsigned long nsec)
+{
+  register long a0 __asm__("16") = nsec;
+  register long v0 __asm__("0");
+  asm volatile ("call_pal 3" : "=r"(v0) : "r"(a0));
+  return v0;
+}
+
+void
+ndelay(unsigned long nsec)
+{
+  long left = nsec;
+  do {
+    left = ndelay_with_int(left);
+  } while (left > 0);
+}