/* $OpenBSD: md_init.h,v 1.3 2011/09/19 21:05:29 kettenis Exp $ */

/*
 * Copyright (c) 2003 Dale Rahn. 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.
 *
 * 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 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.
 */  


#define MD_SECT_CALL_FUNC(section, func)			\
	__asm (".section .rodata			\n"	\
	"	.align 8				\n"	\
	"L$" #func "					\n"	\
	"	.dword "#func "				\n"	\
	"	.previous				\n"	\
	"	.section "#section",\"ax\",@progbits	\n"	\
	"	addil	LR'L$" #func "-$global$, %dp	\n"	\
	"	ldd	RR'L$" #func "-$global$(%r1), %r1\n"	\
	"	bve,l	(%r1), %rp			\n"	\
	"	std	%dp,-80(%sp)			\n"	\
	"	ldd	-80(%sp),%dp			\n"	\
	"	.previous")

#define MD_SECTION_PROLOGUE(sect, entry_pt)			\
	__asm (						   	\
	"	.section "#sect",\"ax\",@progbits	\n"	\
	"	.EXPORT "#entry_pt",ENTRY,PRIV_LEV=3,ARGW0=NO,ARGW1=NO,ARGW2=NO,ARGW3=NO,RTNVAL=NO					\n"	\
	"	.align 4				\n"	\
	#entry_pt"					\n"	\
	"	std %rp, -16(%sp)			\n"	\
	"	ldo 128(%sp),%sp			\n"	\
	"	/* fall thru */				\n"	\
	"	.previous")


#define MD_SECTION_EPILOGUE(sect)				\
	__asm (							\
	"	.section "#sect",\"ax\",@progbits	\n"	\
	"	ldd -144(%sp),%rp			\n"	\
	"	bv %r0(%rp)				\n"	\
	"	ldo -128(%sp),%sp			\n"	\
	"	.previous")