From 5f1adcf7652b3113d4ccbc7adcf9426fbecb428f Mon Sep 17 00:00:00 2001 From: Sun Yimin Date: Thu, 22 Feb 2024 11:08:43 +0800 Subject: [PATCH] Updated SM2 MFMM (2) (markdown) --- SM2-MFMM-(2).md | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/SM2-MFMM-(2).md b/SM2-MFMM-(2).md index 34e82ab..cd8cccc 100644 --- a/SM2-MFMM-(2).md +++ b/SM2-MFMM-(2).md @@ -104,6 +104,7 @@ $t_0=t_0 - a_1$ \ // First reduction step, [p3, p2, p1, p0] = [1, -0x100000000, 0, (1 - 0x100000000), -1] MOVQ acc0, AX \ MOVQ acc0, DX \ + MOVQ acc0, CX \ SHLQ $32, AX \ // AX = L(acc0 * 2^32), low part SHRQ $32, DX \ // DX = H(acc0 * 2^32), high part \// calculate the negative part: [0, -0x100000000, 0, -0x100000000] * acc0 @@ -113,7 +114,7 @@ $t_0=t_0 - a_1$ SBBQ DX, acc0 \ \ // calculate the positive part: [1, 0, 0, 1] * acc0 + [0, acc3, acc2, acc1], \ // due to (-1) * acc0 + acc0 == 0, so last lowest lamb 0 is dropped directly, no carry. - ADDQ acc0, acc1 \ // acc1' = L (acc0 + acc1) + ADDQ CX, acc1 \ // acc1' = L (acc0 + acc1) ADCQ $0, acc2 \ // acc2' = acc2 + carry1 ADCQ $0, acc3 \ // acc3' = acc3 + carry2 ADCQ $0, acc0 \ // acc0' = acc0 + carry3