47 lines
833 B
NASM
47 lines
833 B
NASM
; File: bootia32.asm
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format PE DLL EFI at 10000000h
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entry efimain
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section '.text' code executable readable
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include '../common/const.inc'
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include '../common/macro.inc'
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include 'uefi.inc'
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; ESP => return address
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; ESP + 4 => Handle
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; ESP + 8 => SysTable
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efimain:
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mov eax, [esp+4]
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mov [handle], eax
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mov eax, [esp+8]
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mov [system_table], eax
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mov ebx, [eax + EFI_SYSTEM_TABLE.ConOut]
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mov eax, 1
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push eax
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push ebx
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call [ebx + EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.Reset]
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add esp, 8
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push hello_msg
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push ebx
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call [ebx + EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.OutputString]
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add esp, 8
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jmp $
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xor eax, eax
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ret
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section '.reloc' fixups data discardable
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section '.data' data readable writeable
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hello_msg du 'StupidOS EFI Bootloader', 13, 10, 0
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kernel_file du 'vmstupid.sys', 0
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handle dd ?
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system_table dd ?
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