fixture:
Mach header
      magic  cputype cpusubtype  caps    filetype ncmds sizeofcmds      flags
 0xfeedfacf 16777228          0  0x00           5     1        152 0x00000000
Load command 0
      cmd LC_SEGMENT_64
  cmdsize 152
  segname __TEXT
   vmaddr 0xfffffff007004001
   vmsize 0x0000000000001000
  fileoff 0
 filesize 185
  maxprot 0x00000005
 initprot 0x00000005
   nsects 1
    flags 0x0
Section
  sectname __text
   segname __TEXT
      addr 0xfffffff0070040b9
      size 0x0000000000000001
    offset 184
     align 2^0 (1)
    reloff 0
    nreloc 0
     flags 0x80000400
 reserved1 0
 reserved2 0