diff --git a/libc/arch-x86/include/machine/asm.h b/libc/arch-x86/include/machine/asm.h
new file mode 100644
index 0000000..7a23060
--- /dev/null
+++ b/libc/arch-x86/include/machine/asm.h
@@ -0,0 +1,124 @@
+/*	$OpenBSD: asm.h,v 1.8 2004/06/13 21:49:16 niklas Exp $	*/
+/*	$NetBSD: asm.h,v 1.7 1994/10/27 04:15:56 cgd Exp $	*/
+
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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.
+ *
+ *	@(#)asm.h	5.5 (Berkeley) 5/7/91
+ */
+
+#ifndef _I386_ASM_H_
+#define _I386_ASM_H_
+
+/* This is borrowed from FreeBSD /src/sys/i386/include/asmacros.h v1.27 */
+/*
+ * CNAME and HIDENAME manage the relationship between symbol names in C
+ * and the equivalent assembly language names.  CNAME is given a name as
+ * it would be used in a C program.  It expands to the equivalent assembly
+ * language name.  HIDENAME is given an assembly-language name, and expands
+ * to a possibly-modified form that will be invisible to C programs.
+ */
+#define CNAME(csym)             csym
+#define HIDENAME(asmsym)        .asmsym
+
+#ifdef PIC
+#define PIC_PROLOGUE	\
+	pushl	%ebx;	\
+	call	666f;	\
+666:			\
+	popl	%ebx;	\
+	addl	$_C_LABEL(_GLOBAL_OFFSET_TABLE_)+[.-666b], %ebx
+#define PIC_EPILOGUE	\
+	popl	%ebx
+#define PIC_PLT(x)	x@PLT
+#define PIC_GOT(x)	x@GOT(%ebx)
+#define PIC_GOTOFF(x)	x@GOTOFF(%ebx)
+#else
+#define PIC_PROLOGUE
+#define PIC_EPILOGUE
+#define PIC_PLT(x)	x
+#define PIC_GOT(x)	x
+#define PIC_GOTOFF(x)	x
+#endif
+
+#define _C_LABEL(name)	name
+#define	_ASM_LABEL(x)	x
+
+#define CVAROFF(x, y)	_C_LABEL(x) + y
+
+#ifdef __STDC__
+# define __CONCAT(x,y)	x ## y
+# define __STRING(x)	#x
+#else
+# define __CONCAT(x,y)	x/**/y
+# define __STRING(x)	"x"
+#endif
+
+/*
+ * WEAK ALIAS: create a weak alias
+ */
+#define WEAK_ALIAS(alias,sym) \
+	.weak alias; \
+	alias = sym
+
+/*
+ * WARN_REFERENCES: create a warning if the specified symbol is referenced
+ */
+#define WARN_REFERENCES(_sym,_msg)	\
+	.section .gnu.warning. ## _sym ; .ascii _msg ; .text
+
+/* let kernels and others override entrypoint alignment */
+#ifndef _ALIGN_TEXT
+# define _ALIGN_TEXT .align 2, 0x90
+#endif
+
+#define _ENTRY(x) \
+	.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
+
+#ifdef GPROF
+# define _PROF_PROLOGUE	\
+	pushl %ebp; movl %esp,%ebp; call PIC_PLT(mcount); popl %ebp
+#else
+# define _PROF_PROLOGUE
+#endif
+
+#define	ENTRY(y)	_ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
+#define	NENTRY(y)	_ENTRY(_C_LABEL(y))
+#define	ASENTRY(y)	_ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
+
+#define	ALTENTRY(name)	.globl _C_LABEL(name); _C_LABEL(name):
+
+#define	ASMSTR		.asciz
+
+#define RCSID(x)	.text; .asciz x
+#define __FBSDID(x)     RCSID(x)
+
+#endif /* !_I386_ASM_H_ */