2018-05-06 20:23:43 +01:00
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# http://wiki.osdev.org/Bare_Bones_with_NASM
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.set MBALIGN, 1<<0 # align loaded modules on page boundaries
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.set MEMINFO, 1<<1 # provide memory map
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.set FLAGS, MBALIGN | MEMINFO # this is the Multiboot 'flag' field
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.set MAGIC, 0x1BADB002 # 'magic number' lets bootloader find the header
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.set CHECKSUM,-(MAGIC + FLAGS) # checksum of above, to prove we are multiboot
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2017-10-21 17:11:36 +01:00
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2018-05-06 20:23:43 +01:00
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.section .multiboot
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.align 4
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.long MAGIC
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.long FLAGS
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.long CHECKSUM
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2017-10-21 17:11:36 +01:00
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2018-05-06 20:23:43 +01:00
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.section .bss
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2017-10-21 17:11:36 +01:00
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stack_bottom:
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2018-05-06 20:23:43 +01:00
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.skip 16384 # 16 KiB
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2017-10-21 17:11:36 +01:00
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stack_top:
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2018-05-06 20:23:43 +01:00
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.section .text
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.global _start
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.type _start, @function
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2017-10-21 17:11:36 +01:00
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_start:
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2018-05-06 20:23:43 +01:00
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mov $stack_top, %esp
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2017-10-21 17:11:36 +01:00
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call kernel_main
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cli
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.hang: hlt
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jmp .hang
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.end:
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