diff options
Diffstat (limited to 'crypto/bn/asm/x86-mont.pl')
| -rwxr-xr-x | crypto/bn/asm/x86-mont.pl | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/crypto/bn/asm/x86-mont.pl b/crypto/bn/asm/x86-mont.pl index 1c4003e..d72eb00 100755 --- a/crypto/bn/asm/x86-mont.pl +++ b/crypto/bn/asm/x86-mont.pl @@ -592,16 +592,18 @@ $sbit=$num; &jge (&label("sub")); &sbb ("eax",0); # handle upmost overflow bit - &and ($tp,"eax"); - ¬ ("eax"); - &mov ($np,$rp); - &and ($np,"eax"); - &or ($tp,$np); # tp=carry?tp:rp - -&set_label("copy",16); # copy or in-place refresh - &mov ("eax",&DWP(0,$tp,$num,4)); - &mov (&DWP(0,$rp,$num,4),"eax"); # rp[i]=tp[i] + &mov ("edx",-1); + &xor ("edx","eax"); + &jmp (&label("copy")); + +&set_label("copy",16); # conditional copy + &mov ($tp,&DWP($frame,"esp",$num,4)); + &mov ($np,&DWP(0,$rp,$num,4)); &mov (&DWP($frame,"esp",$num,4),$j); # zap temporary vector + &and ($tp,"eax"); + &and ($np,"edx"); + &or ($np,$tp); + &mov (&DWP(0,$rp,$num,4),$np); &dec ($num); &jge (&label("copy")); |