Fix hi bit set divisor issue for word division

diff --git a/sm3.asm b/sm3.asm
index c5d4ae5..aed29a1 100644 (file)
--- a/sm3.asm
+++ b/sm3.asm
@@ -2445,11 +2445,15 @@ div_w0: ; above
        rla
 div_w00:
        adc     hl,hl
+       jr      c,div_w01
        sbc     hl,bc
-       jr      nc,div_w01
+       jr      nc,div_w02
        dec     a
-       jr      div_w11
+       jr      div_w12
 div_w01:
+       or      a
+       sbc     hl,bc
+div_w02:
        add     a,a
        dec     d
        jr      nz,div_w00
@@ -2464,11 +2468,14 @@ div_w1: ; below
        add     a,a
 div_w10:
        adc     hl,hl
-       add     hl,bc
        jr      nc,div_w11
+       add     hl,bc
+       jr      nc,div_w12
        inc     a
-       jr      div_w01
+       jr      div_w02
 div_w11:
+       add     hl,bc
+div_w12:
        add     a,a
        dec     d
        jr      nz,div_w10
@@ -2605,12 +2612,15 @@ div_w_n0: ; above
        rla
 div_w_n00:
        adc     hl,hl
+       jr      nc,div_w_n01
        or      a
        sbc     hl,bc
-       jr      c,div_w_n01
+       jr      c,div_w_n02
        dec     a
-       jr      div_w_n11
+       jr      div_w_n12
 div_w_n01:
+       sbc     hl,bc
+div_w_n02:
        add     a,a
        dec     d
        jr      nz,div_w_n00
@@ -2625,11 +2635,14 @@ div_w_n1: ; below
        add     a,a
 div_w_n10:
        adc     hl,hl
-       add     hl,bc
        jr      c,div_w_n11
+       add     hl,bc
+       jr      c,div_w_n12
        inc     a
-       jr      div_w_n01
+       jr      div_w_n02
 div_w_n11:
+       add     hl,bc
+div_w_n12:
        add     a,a
        dec     d
        jr      nz,div_w_n10