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sm3: ppc64x, kdf mult by 4, 4

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Sun Yimin 2024-09-06 13:12:16 +08:00 committed by GitHub
parent 5d9a4eb11d
commit 72a838fa56
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1 changed files with 12 additions and 3 deletions
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15
sm3/sm3blocks_ppc64x.s
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@ -60,7 +60,7 @@ GLOBL ·mask(SB), RODATA, $80
// r = s <<< n
#define PROLD(s, r, n) \
VSPLTISW $n, TMP5 \
XXSPLTIW $n, TMP5 \
VRLW s, TMP5, r
#define loadWordByIndex(W, i) \
@ -94,10 +94,19 @@ GLOBL ·mask(SB), RODATA, $80
VPERM TMP2, TMP3, M2, T2; \
VPERM TMP2, TMP3, M3, T3
// Load constant T, How to simlify it?
// Solution 1: big constant table
// Solution 2: 2 constant T, rotate shift left one bit every time
// Which solution's performance is better?
#define LOAD_T(index, const, target) \
MOVD $const, R19 \
MTVSRWZ R19, target \
VSPLTW $3, target, target
#define ROUND_00_11(index, const, a, b, c, d, e, f, g, h) \
PROLD(a, TMP0, 12) \
VOR TMP0, TMP0, TMP1 \
VSPLTISW $const, TMP2 \
LOAD_T(index, const, TMP2) \
VADDUWM TMP2, TMP0, TMP0 \
VADDUWM e, TMP0, TMP0 \
PROLD(TMP0, TMP2, 7) \ // TMP2 = SS1
@ -152,7 +161,7 @@ GLOBL ·mask(SB), RODATA, $80
MESSAGE_SCHEDULE(index) \ // TMP1 is Wt+4 now, Pls do not use it
PROLD(a, TMP0, 12) \
VOR TMP0, TMP0, TMP4 \
VSPLTISW $const, TMP2 \
LOAD_T(index, const, TMP2) \
VADDUWM TMP2, TMP0, TMP0 \
VADDUWM e, TMP0, TMP0 \
PROLD(TMP0, TMP2, 7) \ // TMP2 = SS1