create mode 100644 std/c/freebsd.zig
 create mode 100644 std/os/freebsd/errno.zig
 create mode 100644 std/os/freebsd/index.zig
 create mode 100644 std/os/freebsd/syscall.zig
 create mode 100644 std/os/freebsd/x86_64.zig