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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) STx(r)
// Check if zero mod p256 // Check if zero mod p256
MOVV $1, hlp0
OR x0, x1, acc0 OR x0, x1, acc0
OR x2, x3, acc1 OR x2, x3, acc1
OR acc0, acc1, acc1 OR acc0, acc1, acc1
SGTU acc1, ZERO, hlp0 MASKNEZ acc1, hlp0, hlp0
MOVV $-1, acc0 MOVV $-1, acc0
MOVV p256p<>+0x08(SB), acc1 MOVV p256p<>+0x08(SB), acc1
@ -2194,7 +2195,8 @@ TEXT ·p256PointAddAsm(SB),0,$392-32
OR acc4, acc5, acc4 OR acc4, acc5, acc4
OR acc6, acc7, acc7 OR acc6, acc7, acc7
OR acc4, 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 OR hlp0, res_ptr, res_ptr
LDx(z2sqr) LDx(z2sqr)
@ -2212,10 +2214,11 @@ TEXT ·p256PointAddAsm(SB),0,$392-32
STx(h) STx(h)
// Check if zero mod p256 // Check if zero mod p256
MOVV $1, hlp0
OR x0, x1, acc0 OR x0, x1, acc0
OR x2, x3, acc1 OR x2, x3, acc1
OR acc0, acc1, acc1 OR acc0, acc1, acc1
SGTU acc1, ZERO, hlp0 MASKNEZ acc1, hlp0, hlp0
MOVV $-1, acc0 MOVV $-1, acc0
MOVV p256p<>+0x08(SB), acc1 MOVV p256p<>+0x08(SB), acc1
@ -2228,7 +2231,8 @@ TEXT ·p256PointAddAsm(SB),0,$392-32
OR acc4, acc5, acc4 OR acc4, acc5, acc4
OR acc6, acc7, acc7 OR acc6, acc7, acc7
OR acc4, acc7, acc7 OR acc4, acc7, acc7
SGTU acc7, ZERO, t0 MOVV $1, t0
MASKNEZ acc7, t0, t0
OR hlp0, t0, hlp0 OR hlp0, t0, hlp0
AND hlp0, res_ptr, res_ptr AND hlp0, res_ptr, res_ptr