29 lines
481 B
ArmAsm
29 lines
481 B
ArmAsm
global loader ; entry symbol for ELF
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extern kmain
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MAGIC_NUMBER equ 0x1BADB002 ; magic number constant
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FLAGS equ 0x3
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CHECKSUM equ -(MAGIC_NUMBER + FLAGS) ; calculate the checksum
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KERNEL_STACK_SIZE equ 4096
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section .multiboot
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align 4 ; code must be 4 byte aligned
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dd MAGIC_NUMBER
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dd FLAGS
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dd CHECKSUM
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section .bss
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align 4
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kernel_stack:
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resb KERNEL_STACK_SIZE
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section .text
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loader:
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mov esp, kernel_stack + KERNEL_STACK_SIZE
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call kmain
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cli
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loop: hlt
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jmp loop
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