52 lines
2.1 KiB
ArmAsm
52 lines
2.1 KiB
ArmAsm
/*-
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* Copyright (c) 2014 Roger Pau Monné <royger@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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#define ASM_FILE
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#include "multiboot.h"
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/*
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* The multiboot specification requires the executable to be launched
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* with %cs set to a flat read/execute segment with offset 0 and limit
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* 0xFFFFFFFF, and the rest of the segment registers (%ds, %es, %fs,
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* %gs, %ss) to flat read/write segments with the same offset and limit.
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* This is already done by the BTX code before calling multiboot_tramp,
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* so there is no need to do anything here.
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*/
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.globl multiboot_tramp
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multiboot_tramp:
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/* Be sure that interrupts are disabled. */
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cli
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movl $MULTIBOOT_BOOTLOADER_MAGIC, %eax
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/* Get the entry point and address of the multiboot_info parameter. */
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movl 8(%esp), %ebx
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movl 4(%esp), %ecx
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call *%ecx
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