initial import of NetBSD tree

1 files changed, 71 insertions, 0 deletions

diff --git a/lib/libc/arch/i386/sys/sigprocmask.S b/lib/libc/arch/i386/sys/sigprocmask.S
new file mode 100644
index 00000000000..353c8de2217
--- /dev/null
+++ b/lib/libc/arch/i386/sys/sigprocmask.S
@@ -0,0 +1,71 @@
+/*-
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ *
+ *	from: @(#)sigprocmask.s	5.2 (Berkeley) 12/17/90
+ *	$Id: sigprocmask.S,v 1.1 1995/10/18 08:41:27 deraadt Exp $
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	.text
+	.asciz "$Id: sigprocmask.S,v 1.1 1995/10/18 08:41:27 deraadt Exp $"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+ENTRY(sigprocmask)
+	movl	8(%esp),%ecx		# fetch new sigset pointer
+	testl	%ecx,%ecx		# check new sigset pointer
+	jnz	1f			# if not null, indirect
+/*	movl	$0,8(%esp)		# null mask pointer: block empty set */
+	movl	$1,4(%esp)		# SIG_BLOCK
+	jmp	2f
+1:	movl	(%ecx),%ecx		# fetch indirect  ...
+	movl	%ecx,8(%esp)		# to new mask arg
+2:	movl	$(SYS_sigprocmask),%eax
+	int	$0x80
+	jc	err
+	movl	12(%esp),%ecx		# fetch old mask requested
+	testl	%ecx,%ecx		# test if old mask requested
+	jz	out
+	movl	%eax,(%ecx)		# store old mask
+out:
+	xorl	%eax,%eax
+	ret
+err:
+#ifdef PIC
+	jmp	PIC_PLT(cerror)
+#else
+	jmp	cerror
+#endif