Revision as of 20:33, 12 May 2017 view source osdev>Mrxedac m →‎64 bit mode ← Older edit		Revision as of 20:33, 12 May 2017 view source osdev>Mrxedac m →‎64 bit mode Newer edit →
Line 64: ====64 bit mode==== The operation in 64 bit mode is the same, except that RIP is loaded from LSTAR, or CSTAR of in IA32-e submode (A.K.A. compatibility mode). It also respectively saves and loads RFLAGS to and from R11. As well, in Long Mode, userland CS will be loaded from STAR 63:48 + 16 on SYSRET. Therefore, you might need to ~~invert~~setup your ~~userland~~GDT ~~data and code segments in your GDT~~accordingly. ==Compatibility across Intel and AMD==

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