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C Needs T0 and T1
C QROUND(x0, x1, x2, x3)
define(`QROUND', `
movaps $4, T0 C 0
paddd $1, T0 C 1
movaps T0, T1 C 2
pslld `$'7, T0 C 2
psrld `$'25, T1 C 3
pxor T0, $2 C 3
pxor T1, $2 C 4
movaps $1, T0 C 0
paddd $2, T0 C 5
movaps T0, T1 C 6
pslld `$'9, T0 C 6
psrld `$'23, T1 C 7
pxor T0, $3 C 7
pxor T1, $3 C 8
movaps $2, T0 C 0
paddd $3, T0 C 9
movaps T0, T1 C 10
pslld `$'13, T0 C 10
psrld `$'19, T1 C 11
pxor T0, $4 C 11
pxor T1, $4 C 12
movaps $3, T0 C 0
paddd $4, T0 C 13
movaps T0, T1 C 14
pslld `$'18, T0 C 14
psrld `$'14, T1 C 15
pxor T0, $1 C 15
pxor T1, $1 C 16
')
C SWAP(x0, x1, mask)
C Swaps bits in x0 and x1, with bits selected by the mask
define(`SWAP', `
movaps $1, T0
pxor $2, $1
pand $3, $1
pxor $1, $2
pxor T0, $1
')
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