2021-07-12 13:57:08 +00:00
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/*
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* Copyright (c) LSE
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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 are met:
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* * 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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* * 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 LSE AS IS AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL LSE BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "multiboot.h"
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#define HEADER_FLAGS (MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO)
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2021-07-12 15:55:13 +00:00
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#define STACK_SIZE 8192
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2021-07-12 13:57:08 +00:00
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2021-07-12 15:55:13 +00:00
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.section .multiboot
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.type multiboot_header, @object
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multiboot_header:
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2021-07-12 15:55:13 +00:00
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.align MULTIBOOT_HEADER_ALIGN
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.long MULTIBOOT_HEADER_MAGIC
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.long HEADER_FLAGS
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.long -(MULTIBOOT_HEADER_MAGIC + HEADER_FLAGS)
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.size multiboot_header, . - multiboot_header
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2021-07-12 13:57:08 +00:00
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2021-07-12 15:55:13 +00:00
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.section .text
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.global k_entry
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.type k_entry, @function
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k_entry:
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2021-07-12 15:55:13 +00:00
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lea end_stack, %esp
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push %ebx /* multiboot info */
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push %eax /* magic */
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call k_main /* kernel entry point */
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.Lend:
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jmp .Lend
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.size k_entry, . - k_entry
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.section .bss
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stack:
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.space STACK_SIZE
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.align 16
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end_stack:
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.global end_stack
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