; ARM32 ELF quine
; i made an x86 one but that's boring
; also fuck GNU tools i have no idea how to make them work for this
; compile with:
;     vasmarm_std -Fbin -a4t -o quine quine.asm

.org 0x20000

ehdr:                         ; Elf32_Ehdr
.byte 0x7F, "ELF", 1, 1, 1, 0 ;   e_ident
.byte 0, 0, 0, 0, 0, 0, 0, 0
.2byte 2                      ;   e_type      - executable
.2byte 40                     ;   e_machine   - EM_ARM
.4byte 1                      ;   e_version
.4byte _start                 ;   e_entry
.4byte ehdrsize               ;   e_phoff
.4byte 0                      ;   e_shoff
.4byte 0x05000200             ;   e_flags     - (pretend to be eabi5, soft float
                              ;                  what could possibly go wrong???)
.2byte ehdrsize               ;   e_ehsize
.2byte phdrsize               ;   e_phentsize
.2byte 1                      ;   e_phnum     - only 1 program header
.2byte 0                      ;   e_shentsize - no section headers
.2byte 0                      ;   e_shnum
.2byte 0                      ;   e_shstrndx

.set ehdrsize, phdr - ehdr

phdr:                         ; Elf32_Phdr
.4byte 1                      ;   p_type   - PROGBITS
.4byte 0                      ;   p_offset - start at the beginning of the ELF
.4byte ehdr                   ;   p_vaddr
.4byte ehdr                   ;   p_paddr
.4byte filesize               ;   p_filesz - map the whole ELF into memory
.4byte filesize               ;   p_memsz
.4byte 5                      ;   p_flags  - r-x
.4byte 0x1000                 ;   p_align  - align to page

.set phdrsize, _start - phdr

_start:
mov r7, #4                    ; SYS_write
mov r0, #1                    ; fd = stdout
mov r1, #ehdr                 ; buf = start of program memory
mov r2, #filesize             ; count = program size
svc 0

mov r7, #1                    ; SYS_exit
mov r0, #42                   ; status
svc 0

fileend:
.set filesize, fileend - ehdr