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sm3: ppc64x, confirm understanding

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Sun Yimin 2024-09-25 13:43:44 +08:00 committed by GitHub
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sm3/sm3blocks_ppc64x.s
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@ -195,8 +195,7 @@ GLOBL ·mask(SB), RODATA, $80
VOR b, b, TMP1 \
PROLD(TMP1, b, 9) \ // b = b <<< 9
VOR TMP4, TMP4, h \ // h = TT1
PROLD(f, TMP1, 10) \
PROLD(TMP1, f, 9) \ // f = f <<< 19, Here we had to ROTL twice: ROTL 10, then ROTL 9
PROLD(f, f, 19) \ // f = f <<< 19
PROLD(TMP3, TMP1, 9) \ // TMP1 = TT2 <<< 9
PROLD(TMP1, TMP0, 8) \ // TMP0 = TT2 <<< 17
VXOR TMP3, TMP1, TMP1 \ // TMP1 = TT2 XOR (TT2 <<< 9)