rW0                22 arch/powerpc/crypto/aes-spe-regs.h #define rW0 r16	/* working registers					*/
rW0                20 arch/powerpc/crypto/sha1-spe-asm.S #define rW0	r14	/* 64 bit round words				*/
rW0                29 arch/powerpc/crypto/sha256-spe-asm.S #define rW0	r14	/* 64 bit registers. 16 words in 8 registers	*/