initial import of NetBSD tree

1 files changed, 62 insertions, 0 deletions

diff --git a/lib/libc/arch/vax/sys/sbrk.S b/lib/libc/arch/vax/sys/sbrk.S
new file mode 100644
index 00000000000..99a8fe2e7bb
--- /dev/null
+++ b/lib/libc/arch/vax/sys/sbrk.S
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	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. 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.
+ */
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	/* .asciz "@(#)sbrk.s	8.1 (Berkeley) 6/4/93" */
+	.asciz "$NetBSD: sbrk.S,v 1.1 1995/04/17 12:24:05 ragge Exp $"
+#endif /* SYSLIBC_SCCS and not lint */
+
+#include "SYS.h"
+
+
+	.globl	_end
+	.globl	minbrk
+	.globl	curbrk
+
+	.data
+minbrk: .long	_end
+curbrk:	.long	_end
+	.text
+
+ENTRY(sbrk)
+	addl3	curbrk,4(ap),-(sp)
+	pushl	$1
+	movl	ap,r3
+	movl	sp,ap
+	chmk	$ SYS_break
+	jcs 	err
+	movl	curbrk,r0
+	addl2	4(r3),curbrk
+	ret
+err:
+	jmp	cerror