.pt_gnu_stack rw // elf-specific instruction //.interp none // request minimal elf, no section/dynamic/interpreter
define i386 include <asm/unistd.h> // can use the C preprocessor
stdout equ 1 // 'equ' constant definition
syscall macro nr // asm-style macros
mov eax, nr ; the syscall number goes in eax int 80h
endm
define syscall1(nr, arg) mov ebx, arg syscall(_NR##nr) // c++-style macros define syscall3(nr, arg1, arg2, arg3) mov edx, arg3 mov ecx, arg2 syscall1(nr, arg1)
.entrypoint // the elf entrypoint
nop nop call 1f // 1f is the first label named '1' found forward
toto_str db “toton” toto_str_len equ $ - toto_str // $ is the address of the start of the current instruction/data
1:
pop ebp
syscall3(write, stdout, ebp, toto_str_len)
; hang forever
jmp $
syscall1(exit, 0) hlt