53 lines
808 B
ArmAsm
53 lines
808 B
ArmAsm
MAGIC equ 0x600db007 ; Popcorn OS header magic number
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section .header
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align 4
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global _header
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_header:
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dd MAGIC ; Kernel header magic
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dw 1 ; Header version 1
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dw 16 ; Kernel header length
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db VERSION_MAJOR ; Kernel version
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db VERSION_MINOR
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dw VERSION_PATCH
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dd VERSION_GITSHA
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section .text
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align 16
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global _start:function (_start.end - _start)
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_start:
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cli
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mov rsp, stack_end
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push 0 ; signal end of stack with 0 return address
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push 0 ; and a few extra entries in case of stack
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push 0 ; problems
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push 0
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mov rbp, rsp
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extern kernel_main
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call kernel_main
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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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global interrupts_enable
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interrupts_enable:
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sti
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ret
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global interrupts_disable
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interrupts_disable:
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cli
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ret
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section .bss
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align 0x100
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stack_begin:
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resb 0x4000 ; 16KiB stack space
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stack_end:
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