71 lines
2.1 KiB
ArmAsm
71 lines
2.1 KiB
ArmAsm
/*-
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* Copyright (c) 2008-2010 Rui Paulo <rpaulo@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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.text
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#include <machine/asm.h>
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#define EFI_SUCCESS 0
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/*
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* EFI entry point.
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* _start(EFI_IMAGE image_handle, EFI_SYSTEM_TABLE *system_table);
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*
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* We calculate the base address along with _DYNAMIC, relocate us and finally
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* pass control to efi_main.
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*/
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ENTRY(_start)
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pushl %ebp
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movl %esp, %ebp
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pushl 12(%ebp) /* image_handle */
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pushl 8(%ebp) /* system_table */
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call 0f
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0: popl %eax
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movl %eax, %ebx
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addl $ImageBase-0b, %eax
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addl $_DYNAMIC-0b, %ebx
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pushl %ebx /* dynamic */
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pushl %eax /* ImageBase */
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call _reloc
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cmpl $EFI_SUCCESS, %eax
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jne 1f
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popl %ebx /* remove ImageBase from the stack */
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popl %ebx /* remove dynamic from the stack */
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call efi_main
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1: leave
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ret
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END(_start)
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.data
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.section .reloc, "a"
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.long 0
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.long 10
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.word 0
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