according to brk

1 files changed, 61 insertions, 1 deletions

diff --git a/lib/libc/arch/hppa/sys/sbrk.S b/lib/libc/arch/hppa/sys/sbrk.S
index 7b94a0e555a..1871d72da90 100644
--- a/lib/libc/arch/hppa/sys/sbrk.S
+++ b/lib/libc/arch/hppa/sys/sbrk.S
@@ -1,5 +1,65 @@
+/*	$OpenBSD: sbrk.S,v 1.2 1999/12/31 03:06:49 mickey Exp $	*/
+
+/*
+ * Copyright (c) 1999 Michael Shalayeff
+ * 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 Michael Shalayeff.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR OR HIS RELATIVES 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 MIND, 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 "SYS.h"
 
-RSYSCALL(sbrk)
+	.import	end, data
+
+	.space $PRIVATE$
+	.subspa $DATA$
+	.export	curbrk, data
+curbrk
+	.long	end
+
+ENTRY(sbrk)
+	ldil	L%curbrk, t1
+	ldw	R%curbrk(t1), t2
+	add	t2, arg0, arg0
+	stw	arg0, HPPA_FRAME_ARG(0)(sp)
+
+	SYSCALL(break)
+
+	comb,<>,n r0, t1, brk$err
+
+	ldil	L%curbrk, t1
+	ldw	R%curbrk(t1), arg0
+	ldw	HPPA_FRAME_ARG(0)(sp), arg1
+	stw	arg1, R%curbrk(t1)
+
+brk$err
+	bv	r0(rp)
+	nop
+EXIT(sbrk)
 
 	.end
+