Hi, Kirll, On 1/15/19 7:45 PM, Cao jin wrote: > Hi, > I have been digging into this file for a while, and I still have 2 > questions unclear, hope to get your help. >
> > 2. > Why gdt64 has following definition?: > > gdt64: > .word gdt_end - gdt > .long 0 > .word 0 > .quad 0 > > obviously, gdt64 stores the GDTR content under x86_64, which is 10 bytes > long, so why not just: > > gdt64: > .word gdt_end - gdt > .quad 0 > > With above modification, it can boot. > Seems you introduced gdt64 code in commit beebaccd50, could you help with this question? And it also remind me of another question about adjust_got which is also introduced by you. Because I failed to construct a test environment with ld version less than 2.24 until now, so I wanna do a quick ask here: does it make sense to adjust GOT from the 4th entry of it? Because as I know, the first 3 entries are special one, which (I guess) will be not used. -- Sincerely, Cao jin
