PXOR
Usage: PXOR dest,src,order Modifies flags: CF OF PF SF ZF (AF undefined)
Performs a logical Exclusive-OR (XOR) operation on the 'src' and the 'dest' and stores the result in the 'dest'.
MMX Bitwise XOR
PXOR mm1,mm2/m64 ; 0F EF /r [PENT,MMX]
PXOR xmm1,xmm2/m128 ; 66 0F EF /r [WILLAMETTE,SSE2]
PXOR performs a bitwise XOR operation between its two operands (i.e. each bit of the result is 1 if and only if exactly one of the corresponding bits of the two inputs was 1), and stores the result in the destination (first) operand.
The 'src' operand can be an MMX technology register or a 64-bit memory location or it can be an XMM register or a 128-bit memory location. The 'dest' operand can be an MMX technology register or an XMM register. Each bit of the result is 1 if the corresponding bits of the two operands are different; each bit is 0 if the corresponding bits of the operands are the same.
EXAMPLE:
pxor xmm1 xmm2