/*!
 * \file
 * <!--
 * Copyright 2004 Develer S.r.l. (http://www.develer.com/)
 * Copyright 1999,2000,2001 Bernardo Innocenti <bernie@develer.com>
 * This file is part of DevLib - See devlib/README for information.
 * -->
 *
 * \brief i386 context switch
 *
 * \version $Id$
 *
 * \author Bernardo Innocenti <bernie@develer.com>
 */

/*
 * $Log$
 * Revision 1.1  2005/11/27 03:06:15  bernie
 * Add x86_64 task switching (to be updated to new-style scheduler).
 *
 * Revision 1.1  2005/11/14 21:06:38  bernie
 * Add x86_64 support.
 *
 * Revision 1.2  2004/06/06 16:14:12  bernie
 * Add DevLib license information.
 *
 * Revision 1.1  2004/05/23 17:27:00  bernie
 * Import kern/ subdirectory.
 *
 */

!!!!!! THIS FILE HAS NOT BEEN REVISED FOR THE NEW SCHEDULER API !!!!!!

/* I know it's ugly... */
#.intel_syntax

/* void AsmSwitchContext(void * new_sp, void ** save_sp) */
.globl AsmSwitchContext
AsmSwitchContext:
	pushq	%rax
	pushq	%rbx
	pushq	%rcx
	pushq	%rdx
	pushq	%rsi
	pushq	%rdi
	pushq	%rbp
	movq	%rsp,(%rsi)             /* *save_sp = rsp */
	movq	%rdi,%rsp               /* rsp = new_sp */
	popq	%rbp
	popq	%rdi
	popq	%rsi
	popq	%rdx
	popq	%rcx
	popq	%rbx
	popq	%rax
	ret

/* void AsmReplaceContext(void * new_sp, void ** dummy) */
.globl AsmReplaceContext
AsmReplaceContext:
	movq	%rdi,%rsp                /* rsp = new_sp */
	popq	%rbp
	popq	%rdi
	popq	%rsi
	popq	%rdx
	popq	%rcx
	popq	%rbx
	popq	%rax
	ret