Messages in this thread | | | Date | Fri, 7 Jul 2023 15:56:27 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v5 05/20] x86/decompressor: Use proper sequence to take the address of the GOT |
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On Fri, Jun 23, 2023 at 04:00:30PM +0200, Ard Biesheuvel wrote: > if you assemble this > > movl $_GLOBAL_OFFSET_TABLE_, %eax > movl $_GLOBAL_OFFSET_TABLE, %eax > > you'll end up with > > 0: b8 01 00 00 00 mov $0x1,%eax > 1: R_386_GOTPC _GLOBAL_OFFSET_TABLE_ > 5: b8 00 00 00 00 mov $0x0,%eax > 6: R_386_32 _GLOBAL_OFFSET_TABLE > > So it is not possible to take the absolute address of > _GLOBAL_OFFSET_TABLE_ via an absolute relocation, you will always get > the relative offset instead.
Right.
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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