GDT in entry16/32.inc

[Xavier Pegenaute]

Hello,

for curiosity is there any specific reason for put values in the first 
entry of GDT in the file src/cpu/i386/entry[16|32].inc ?.

The content of the first entry is:

.globl EXT(gdtptr)
gdt:
EXT(gdtptr):
    .word    gdt_end - gdt -1 /* compute the table limit */
    .long    gdt         /* we know the offset */
    .word    0

... etc ...

Xavi.
Regards.