Current byte count == 24

gistfile1.txt

# getchar:                      # read a byte from stdin
        6a 00                   # push    0
        89 e0                   # mov     eax, esp
        6a 01                   # push    1
        50                      # push    eax
        6a 00                   # push    STDIN_FILENO
        6a 03                   # push    SYS_READ
        58                      # pop     eax
        50                      # push    eax
        cd 80                   # int     80h
        85 c0                   # test    eax, eax
        74 05                   # je      exit
        83 c4 10                # add     esp, 16
        58                      # pop     eax
        c3                      # ret