diff --git a/libc/arch-x86/include/machine/limits.h b/libc/arch-x86/include/machine/limits.h
new file mode 100644
index 0000000..86fd854
--- /dev/null
+++ b/libc/arch-x86/include/machine/limits.h
@@ -0,0 +1,63 @@
+/*	$OpenBSD: limits.h,v 1.11 2006/01/06 22:48:47 millert Exp $	*/
+/*	$NetBSD: limits.h,v 1.11 1995/12/21 01:08:59 mycroft Exp $	*/
+
+/*
+ * Copyright (c) 1988 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)limits.h	7.2 (Berkeley) 6/28/90
+ */
+
+#ifndef _MACHINE_LIMITS_H_
+#define _MACHINE_LIMITS_H_
+
+#include <sys/cdefs.h>
+
+#define	MB_LEN_MAX	1		/* no multibyte characters */
+
+#ifndef	SIZE_MAX
+#define	SIZE_MAX	UINT_MAX	/* max value for a size_t */
+#endif
+#ifndef SSIZE_MAX
+#define	SSIZE_MAX	INT_MAX		/* max value for a ssize_t */
+#endif
+
+#if __BSD_VISIBLE
+#define	SIZE_T_MAX	UINT_MAX	/* max value for a size_t (historic) */
+
+#define	UQUAD_MAX	0xffffffffffffffffULL		/* max unsigned quad */
+#define	QUAD_MAX	0x7fffffffffffffffLL		/* max signed quad */
+#define	QUAD_MIN	(-0x7fffffffffffffffLL-1)	/* min signed quad */
+
+#endif /* __BSD_VISIBLE */
+
+#define LONGLONG_BIT    64
+#define LONGLONG_MIN    (-9223372036854775807LL-1)
+#define LONGLONG_MAX    9223372036854775807LL
+#define ULONGLONG_MAX   18446744073709551615ULL
+
+#endif /* _MACHINE_LIMITS_H_ */