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Diffstat (limited to 'libc/sysdeps/linux/arm/iopl.c')
-rw-r--r--libc/sysdeps/linux/arm/iopl.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/arm/iopl.c b/libc/sysdeps/linux/arm/iopl.c
new file mode 100644
index 000000000..0cd306d42
--- /dev/null
+++ b/libc/sysdeps/linux/arm/iopl.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Phil Blundell, based on the Alpha version by
+ David Mosberger.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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 GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sys/io.h>
+#include <errno.h>
+
+#define MAX_PORT 0x10000
+
+int iopl(int level)
+{
+ if (level > 3) {
+ __set_errno(EINVAL);
+ return -1;
+ }
+ if (level)
+ return ioperm(0, MAX_PORT, 1);
+ return 0;
+}