/*	$NetBSD: asm.h,v 1.22 2021/04/17 20:12:55 rillig Exp $	*/

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * 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. 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.
 *
 *	@(#)asm.h	5.5 (Berkeley) 5/7/91
 */

/*
 * Derived from NetBSD: /sys/arch/amd64/include/asm.h
 */

#ifndef _AMD64_ASM_H_
#define _AMD64_ASM_H_

#define _C_LABEL(x)	x
#define _ASM_LABEL(x)	x

#define __CONCAT(x,y)	x ## y
#define __STRING(x)	#x

#define _ALIGN_TEXT	.p2align 4
#define ALIGN_TEXT	_ALIGN_TEXT

#define _ENTRY(x) \
	.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
#define _LABEL(x) \
	.globl x; x:

#define IDTVEC(name) \
	ALIGN_TEXT; .globl X ## name; .type X ## name,@function; X ## name:
#define IDTVEC_END(name) \
	.size X ## name, . - X ## name

#ifdef __PIC__
#define PIC_PLT(x)	x@PLT
#define PIC_GOT(x)	x@GOTPCREL(%rip)
#else
#define PIC_PLT(x)	x
#define PIC_GOT(x)	x
#endif

#ifdef GPROF
# define _PROF_PROLOGUE	\
	pushq %rbp; leaq (%rsp),%rbp; call PIC_PLT(__mcount); popq %rbp
#else
# define _PROF_PROLOGUE
#endif

#define ENTRY(y)	_ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
#define LABEL(y)	_LABEL(_C_LABEL(y))
#define END(y)		.size y, . - y

#endif /* !_AMD64_ASM_H_ */