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X86-64 Instruction Encoding: Difference between revisions
→Three byte XOP escape prefix
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(→Operand-size and address-size override prefix: Condense operand and address size table) |
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The AMD64 Architecture Programmer’s Manual Volume 6 states that the map_select field must be equal to or greater than 8, to differentiate the XOP prefix from the POP instruction that formerly used opcode 0x8F.
==== Two byte VEX escape prefix ====
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