mirror of
https://github.com/linuxboot/linuxboot
synced 2024-11-22 17:01:28 +00:00
117 lines
2.2 KiB
NASM
117 lines
2.2 KiB
NASM
# nasm -f bin
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bits 64
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section .header
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DOS:
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dw 0x5a4d ;e_magic
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times 29 dw 0 ;unused
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dd 0x40 ;e_lfanew
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PECOFF:
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dd `PE\0\0` ;Signature
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dw 0x8664 ;Machine
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dw 3 ;NumberOfSections
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dd 0 ;TimeDateStamp
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dd 0 ;PointerToSymbolTable
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dd 0 ;NumberOfSymbols
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dw 160 ;SizeOfOptionalHeader
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dw 0x202 ;Characteristics
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dw 0x20b ;Magic
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db 0 ;MajorLinkerVersion
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db 0 ;MinorLinkerVersion
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dd 0x200 ;SizeOfCode
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dd 0x400 ;SizeOfInitializedData
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dd 0 ;SizeOfUninitializedData
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dd 0x0 ;AddressOfEntryPoint
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dd 0x0 ;BaseOfCode
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dq 0x0 ;ImageBase
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dd 0x1000 ;SectionAlignment
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dd 0x200 ;FileAlignment
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dw 0 ;MajorOperatingSystemVersion
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dw 0 ;MinorOperatingSystemVersion
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dw 0 ;MajorImageVersion
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dw 0 ;MinorImageVersion
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dw 0 ;MajorSubsystemVersion
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dw 0 ;MinorSubsystemVersion
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dd 0 ;Reserved
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dd 0x3000 ;SizeOfImage
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dd 0x200 ;SizeOfHeaders
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dd 0 ;CheckSum
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dw 10 ;Subsystem
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dw 0 ;DllCharacteristics
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dq 0 ;SizeOfStackReserve
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dq 0 ;SizeOfStackCommit
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dq 0 ;SizeOfHeapReserve
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dq 0 ;SizeOfHeapCommit
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dd 0 ;LoaderFlags
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dd 6 ;NumberOfRvaAndSizes
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DIRS:
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times 40 db 0 ;unused dirs for this app
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dd 0x1000 ;VirtualAddress(.reloc)
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dd 8 ;Size(.reloc)
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SECTS:
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.1:
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dq `.text` ;Name
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dd codesize ;VirtualSize
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dd 0x0 ;VirtualAddress
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dd 0x200 ;SizeOfRawData
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dd 0x200 ;PointerToRawData
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dd 0 ;PointerToRelocations
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dd 0 ;PointerToLinenumbers
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dw 0 ;NumberOfRelocations
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dw 0 ;NumberOfLinenumbers
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dd 0x60500020 ;Characteristics
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.2:
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dq `.reloc`
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dd 0x8
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dd 0x1000
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dd 0x200
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dd 0x400
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dd 0
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dd 0
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dw 0
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dw 0
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dd 0x42100040
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.3:
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dq `.data`
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dd datasize
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dd 0x2000
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dd 0x200
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dd 0x600
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dd 0
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dd 0
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dw 0
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dw 0
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dd 0xc0100040
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section .text follows=.header align=0x200
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a:
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mov rax, 48
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mov rdx, 1016
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db 0xee
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jmp a
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sub rsp, 40
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mov rcx, [rdx+64]
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lea rdx, [rel hello]
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call [rcx+8]
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add rsp, 40
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ret
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codesize equ $ - $$
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section .reloc follows=.text align=0x200
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dd 0 ;PageRVA
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dd 8 ;BlockSize
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section .data follows=.reloc align=0x200 vstart=0x2200 ;yeah this is the trick!
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hello:
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db __utf16__ `hello world!\n\r\0`
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datasize equ $ - $$
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align 0x200,db 0
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