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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 http://www.opensolaris.org/os/licensing.
* 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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/asm_linkage.h>
#include <sys/asm_misc.h>
#include "dboot_xboot.h"
#if defined(__amd64)
ENTRY_NP(_start)
/*
* At entry we are passed a (start_info_t *) in %rsi.
*/
movq %rsi, xen_info(%rip)
/*
* make sure we have sane processor state
*/
xorw %ax, %ax
movw %ax, %fs
movw %ax, %gs
pushq $0
popfq
pushq $0
/*
* go off and unpack the kernel bits, adjust page tables, etc.
*/
call startup_kernel
/*
* we can only setup a stack after startup_kernel().
* Its in the lower part of memroy.
*/
leaq stack_space(%rip), %rsp
addq $STACK_SIZE, %rsp
andl $0xfffffff0, %esp
pushq $0x0 /* push a dead-end frame */
pushq $0x0
movq %rsp, %rbp
/*
* when we get back, load the kernel entry point and jump to it
* The address of the xboot_info is the kernel's only argument.
*/
movl entry_addr_low, %esi
movq $0xffffffff00000000,%rdx
orq %rdx, %rsi /* set upper bits of entry addr */
movl bi, %edi
call *%rsi
SET_SIZE(_start)
#elif defined(__i386)
ENTRY_NP(_start)
/*
* At entry we are passed a (start_info_t *) in %esi.
*/
movl %esi, xen_info
/*
* make sure we have sane processor state
*/
cld
xorw %ax, %ax
movw %ax, %fs
movw %ax, %gs
/*
* go off and unpack the kernel bits, adjust page tables, etc.
*/
call startup_kernel
/*
* we can only setup a stack after startup_kernel().
*/
movl $stack_space, %esp /* load my stack pointer */
addl $STACK_SIZE, %esp
pushl $0x0 /* push a dead-end frame */
pushl $0x0
movl %esp, %ebp
/*
* when we get back, load the kernel entry point and jump to it
* The address of the xboot_info is the kernel's only argument.
*/
movl entry_addr_low, %esi
movl bi, %eax
pushl %eax
call *%esi
SET_SIZE(_start)
#endif /* __i386 */
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