54 lines
1.9 KiB
NASM
54 lines
1.9 KiB
NASM
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; ARM32 ELF quine
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; i made an x86 one but that's boring
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; also fuck GNU tools i have no idea how to make them work for this
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; compile with:
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; vasmarm_std -Fbin -a4t -o quine quine.asm
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.org 0x20000
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ehdr: ; Elf32_Ehdr
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.byte 0x7F, "ELF", 1, 1, 1, 0 ; e_ident
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.byte 0, 0, 0, 0, 0, 0, 0, 0
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.2byte 2 ; e_type - executable
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.2byte 40 ; e_machine - EM_ARM
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.4byte 1 ; e_version
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.4byte _start ; e_entry
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.4byte ehdrsize ; e_phoff
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.4byte 0 ; e_shoff
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.4byte 0x05000200 ; e_flags - (pretend to be eabi5, soft float
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; what could possibly go wrong???)
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.2byte ehdrsize ; e_ehsize
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.2byte phdrsize ; e_phentsize
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.2byte 1 ; e_phnum - only 1 program header
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.2byte 0 ; e_shentsize - no section headers
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.2byte 0 ; e_shnum
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.2byte 0 ; e_shstrndx
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.set ehdrsize, phdr - ehdr
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phdr: ; Elf32_Phdr
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.4byte 1 ; p_type - PROGBITS
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.4byte 0 ; p_offset - start at the beginning of the ELF
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.4byte ehdr ; p_vaddr
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.4byte ehdr ; p_paddr
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.4byte filesize ; p_filesz - map the whole ELF into memory
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.4byte filesize ; p_memsz
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.4byte 5 ; p_flags - r-x
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.4byte 0x1000 ; p_align - align to page
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.set phdrsize, _start - phdr
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_start:
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mov r7, #4 ; SYS_write
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mov r0, #1 ; fd = stdout
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mov r1, #ehdr ; buf = start of program memory
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mov r2, #filesize ; count = program size
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svc 0
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mov r7, #1 ; SYS_exit
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mov r0, #42 ; status
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svc 0
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fileend:
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.set filesize, fileend - ehdr
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