Code drop from //branches/cupcake/...@124589
diff --git a/libc/arch-x86/bionic/_setjmp.S b/libc/arch-x86/bionic/_setjmp.S
new file mode 100644
index 0000000..ac62635
--- /dev/null
+++ b/libc/arch-x86/bionic/_setjmp.S
@@ -0,0 +1,71 @@
+/* $OpenBSD: _setjmp.S,v 1.5 2005/08/07 11:30:38 espie 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.
+ */
+
+#include <machine/asm.h>
+
+/*
+ * C library -- _setjmp, _longjmp
+ *
+ * _longjmp(a,v)
+ * will generate a "return(v)" from the last call to
+ * _setjmp(a)
+ * by restoring registers from the stack.
+ * The previous signal state is NOT restored.
+ */
+
+ENTRY(_setjmp)
+ movl 4(%esp),%eax
+ movl 0(%esp),%edx
+ movl %edx, 0(%eax) /* rta */
+ movl %ebx, 4(%eax)
+ movl %esp, 8(%eax)
+ movl %ebp,12(%eax)
+ movl %esi,16(%eax)
+ movl %edi,20(%eax)
+ xorl %eax,%eax
+ ret
+
+ENTRY(_longjmp)
+ movl 4(%esp),%edx
+ movl 8(%esp),%eax
+ movl 0(%edx),%ecx
+ movl 4(%edx),%ebx
+ movl 8(%edx),%esp
+ movl 12(%edx),%ebp
+ movl 16(%edx),%esi
+ movl 20(%edx),%edi
+ testl %eax,%eax
+ jnz 1f
+ incl %eax
+1: movl %ecx,0(%esp)
+ ret