Import the FreeBSD/arm libc bits.

Obtained from:	NetBSD

1 files changed, 63 insertions, 0 deletions

diff --git a/lib/libc/arm/sys/getcontext.S b/lib/libc/arm/sys/getcontext.S
new file mode 100644
index 000000000000..e9052596d739
--- /dev/null
+++ b/lib/libc/arm/sys/getcontext.S
@@ -0,0 +1,63 @@
+/*	$NetBSD: getcontext.S,v 1.3 2003/04/05 23:08:52 bjh21 Exp $	*/
+
+/*-
+ * Copyright (c) 2001 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Klaus Klein.
+ *
+ * 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 NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
+__FBSDID("$FreeBSD$");
+#include "SYS.h"
+
+#if defined(SYSLIBC_SCCS) && !defined(lint)
+	RCSID("$NetBSD: getcontext.S,v 1.3 2003/04/05 23:08:52 bjh21 Exp $")
+#endif /* SYSLIBC_SCCS && !lint */
+
+#ifdef WEAK_ALIAS
+WEAK_ALIAS(getcontext, _getcontext)
+#endif
+
+ENTRY(_getcontext)
+	mov	r2, r0			/* Must save argument pointer. */
+	swi	SYS_getcontext
+	bcs	PIC_SYM(CERROR, PLT)
+	str	lr, [r2, #(36 + 15*4)]	/* Adjust PC. */
+#ifdef SOFTFLOAT
+	/* Ahem. */
+	/* Judging from the softfloat code we should at least save
+	   the exception codes and rounding mode here. */
+#endif
+	mov	r0, #0
+	str	r0, [r2, #(36 + 0*4)]	/* Return 0. */
+	mov	pc, lr