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/*
* Copyright (c) 2017 Richard Braun.
* Copyright (c) 2017 Jerko Lenstra.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <stdint.h>
#include <lib/macros.h>
#include "boot.h"
/*
* This is the boot stack, used by the boot code to set the value of
* the ESP register very early once control is passed to the kernel.
*
* It is aligned to 4 bytes to comply with the System V Intel 386 ABI [1].
* While not strictly required since x86 supports unaligned accesses,
* aligned accesses are faster, and the compiler generates instructions
* accessing the stack that assume it's aligned.
*
* See the assembly code at the boot_start label in boot_asm.S.
*
* [1] http://www.sco.com/developers/devspecs/abi386-4.pdf
*/
uint8_t boot_stack[BOOT_STACK_SIZE] __aligned(4);
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