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/*-
* Copyright (c) 2008-2010 Rui Paulo <rpaulo@FreeBSD.org>
* 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 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 AUTHOR 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.
*
* $FreeBSD$
*/
.text
#include <machine/asm.h>
#define EFI_SUCCESS 0
/*
* EFI entry point.
* _start(EFI_IMAGE image_handle, EFI_SYSTEM_TABLE *system_table);
*
* We calculate the base address along with _DYNAMIC, relocate us and finally
* pass control to efi_main.
*/
ENTRY(_start)
pushl %ebp
movl %esp, %ebp
pushl 12(%ebp) /* image_handle */
pushl 8(%ebp) /* system_table */
call 0f
0: popl %eax
movl %eax, %ebx
addl $ImageBase-0b, %eax
addl $_DYNAMIC-0b, %ebx
pushl %ebx /* dynamic */
pushl %eax /* ImageBase */
call _reloc
cmpl $EFI_SUCCESS, %eax
jne 1f
popl %ebx /* remove ImageBase from the stack */
popl %ebx /* remove dynamic from the stack */
call efi_main
1: leave
ret
END(_start)
.data
.section .reloc, "a"
.long 0
.long 10
.word 0
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