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internal/sm2ec: loong64 fix check if zero mod p256

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Sun Yimin 2025-10-15 16:00:05 +08:00 committed by GitHub
parent df5788bbdd
commit 8bb8364b43
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1 changed files with 8 additions and 4 deletions
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12
internal/sm2ec/p256_asm_loong64.s
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@ -2178,10 +2178,11 @@ TEXT ·p256PointAddAsm(SB),0,$392-32
STx(r)
// Check if zero mod p256
MOVV $1, hlp0
OR x0, x1, acc0
OR x2, x3, acc1
OR acc0, acc1, acc1
SGTU acc1, ZERO, hlp0
MASKNEZ acc1, hlp0, hlp0
MOVV $-1, acc0
MOVV p256p<>+0x08(SB), acc1
@ -2194,7 +2195,8 @@ TEXT ·p256PointAddAsm(SB),0,$392-32
OR acc4, acc5, acc4
OR acc6, acc7, acc7
OR acc4, acc7, acc7
SGTU acc7, ZERO, res_ptr
MOVV $1, res_ptr
MASKNEZ acc7, res_ptr, res_ptr
OR hlp0, res_ptr, res_ptr
LDx(z2sqr)
@ -2212,10 +2214,11 @@ TEXT ·p256PointAddAsm(SB),0,$392-32
STx(h)
// Check if zero mod p256
MOVV $1, hlp0
OR x0, x1, acc0
OR x2, x3, acc1
OR acc0, acc1, acc1
SGTU acc1, ZERO, hlp0
MASKNEZ acc1, hlp0, hlp0
MOVV $-1, acc0
MOVV p256p<>+0x08(SB), acc1
@ -2228,7 +2231,8 @@ TEXT ·p256PointAddAsm(SB),0,$392-32
OR acc4, acc5, acc4
OR acc6, acc7, acc7
OR acc4, acc7, acc7
SGTU acc7, ZERO, t0
MOVV $1, t0
MASKNEZ acc7, t0, t0
OR hlp0, t0, hlp0
AND hlp0, res_ptr, res_ptr