2018-03-14 15:08:02 +01:00
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; Copyright (C) 2018 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
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; Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <http://www.gnu.org/licenses/>.
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MBALIGN equ 1<<0 ; align loaded modules on page boundaries
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MEMINFO equ 1<<1 ; provide memory map
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FLAGS equ MBALIGN | MEMINFO ; multiboot flag field
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MAGIC equ 0x1BADB002 ; magic number to help bootloader find the header
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CHECKSUM equ -(MAGIC + FLAGS) ; checksum of the above data
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section .multiboot
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align 4
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dd MAGIC
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dd FLAGS
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dd CHECKSUM
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section .bss
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align 16
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2018-03-08 16:53:29 +01:00
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stack_bottom:
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2018-03-14 15:08:02 +01:00
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resb 16384 ; 16KiB
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2018-03-08 16:53:29 +01:00
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stack_top:
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2018-03-14 15:08:02 +01:00
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section .text
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global _start:function (_start.end - _start)
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2018-03-08 16:53:29 +01:00
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_start:
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2018-03-14 15:08:02 +01:00
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; setup the stack
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mov esp, stack_top
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2018-03-08 16:53:29 +01:00
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2018-03-14 15:08:02 +01:00
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; call the kernel
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extern kernel_main
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2018-03-08 16:53:29 +01:00
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call kernel_main
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2018-03-14 15:08:02 +01:00
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; hang
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cli
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.hang:
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hlt
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jmp .hang
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.end:
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