1/*- 2 * Copyright (c) 2008-2010 Rui Paulo <rpaulo@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 .text 30 31#include <machine/asm.h> 32 33#define EFI_SUCCESS 0 34 35/* 36 * EFI entry point. 37 * _start(EFI_IMAGE image_handle, EFI_SYSTEM_TABLE *system_table); 38 * 39 * We calculate the base address along with _DYNAMIC, relocate us and finally 40 * pass control to efi_main. 41 */ 42 43ENTRY(_start) 44 pushl %ebp 45 movl %esp, %ebp 46 47 pushl 12(%ebp) /* image_handle */ 48 pushl 8(%ebp) /* system_table */ 49 call 0f 500: popl %eax 51 movl %eax, %ebx 52 addl $ImageBase-0b, %eax 53 addl $_DYNAMIC-0b, %ebx 54 pushl %ebx /* dynamic */ 55 pushl %eax /* ImageBase */ 56 call self_reloc 57 popl %ebx /* remove ImageBase from the stack */ 58 popl %ebx /* remove dynamic from the stack */ 59 call efi_main 601: leave 61 ret 62END(_start) 63 64 .data 65 .section .reloc, "a" 66 .long 0 67 .long 10 68 .word 0 69