Unify Assembler files between Linux and Windows

Add new macro ASMABI used by Windows to change
calling API to "sysv_abi".

Reviewed-by: Attila Fülöp <attila@fueloep.org>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jorgen Lundman <lundman@lundman.net>
Closes #14228

include/sys/asm_linkage.h

@@ -0,0 +1,48 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or https://opensource.org/licenses/CDDL-1.0.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_ASM_LINKAGE_H
+#define	_SYS_ASM_LINKAGE_H
+
+#define	ASMABI
+
+#if defined(__i386) || defined(__amd64)
+
+#include <sys/ia32/asm_linkage.h>	/* XX64	x86/sys/asm_linkage.h */
+
+#endif
+
+#if defined(_KERNEL) && defined(HAVE_KERNEL_OBJTOOL)
+
+#include <asm/frame.h>
+
+#else /* userspace */
+#define	FRAME_BEGIN
+#define	FRAME_END
+#endif
+
+
+#endif	/* _SYS_ASM_LINKAGE_H */