diff options
Diffstat (limited to 'openssl/crypto/bn/asm/armv4-mont.pl')
| -rw-r--r-- | openssl/crypto/bn/asm/armv4-mont.pl | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/openssl/crypto/bn/asm/armv4-mont.pl b/openssl/crypto/bn/asm/armv4-mont.pl index 14e0d2d1d..f78a8b5f0 100644 --- a/openssl/crypto/bn/asm/armv4-mont.pl +++ b/openssl/crypto/bn/asm/armv4-mont.pl @@ -23,6 +23,9 @@ # than 1/2KB. Windows CE port would be trivial, as it's exclusively # about decorations, ABI and instruction syntax are identical. +while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} +open STDOUT,">$output"; + $num="r0"; # starts as num argument, but holds &tp[num-1] $ap="r1"; $bp="r2"; $bi="r2"; $rp="r2"; @@ -89,9 +92,9 @@ bn_mul_mont: .L1st: ldr $aj,[$ap],#4 @ ap[j],ap++ mov $alo,$ahi + ldr $nj,[$np],#4 @ np[j],np++ mov $ahi,#0 umlal $alo,$ahi,$aj,$bi @ ap[j]*bp[0] - ldr $nj,[$np],#4 @ np[j],np++ mov $nhi,#0 umlal $nlo,$nhi,$nj,$n0 @ np[j]*n0 adds $nlo,$nlo,$alo @@ -101,21 +104,21 @@ bn_mul_mont: bne .L1st adds $nlo,$nlo,$ahi + ldr $tp,[$_bp] @ restore bp mov $nhi,#0 + ldr $n0,[$_n0] @ restore n0 adc $nhi,$nhi,#0 - ldr $tp,[$_bp] @ restore bp str $nlo,[$num] @ tp[num-1]= - ldr $n0,[$_n0] @ restore n0 str $nhi,[$num,#4] @ tp[num]= .Louter: sub $tj,$num,sp @ "original" $num-1 value sub $ap,$ap,$tj @ "rewind" ap to &ap[1] - sub $np,$np,$tj @ "rewind" np to &np[1] ldr $bi,[$tp,#4]! @ *(++bp) + sub $np,$np,$tj @ "rewind" np to &np[1] ldr $aj,[$ap,#-4] @ ap[0] - ldr $nj,[$np,#-4] @ np[0] ldr $alo,[sp] @ tp[0] + ldr $nj,[$np,#-4] @ np[0] ldr $tj,[sp,#4] @ tp[1] mov $ahi,#0 @@ -129,13 +132,13 @@ bn_mul_mont: .Linner: ldr $aj,[$ap],#4 @ ap[j],ap++ adds $alo,$ahi,$tj @ +=tp[j] + ldr $nj,[$np],#4 @ np[j],np++ mov $ahi,#0 umlal $alo,$ahi,$aj,$bi @ ap[j]*bp[i] - ldr $nj,[$np],#4 @ np[j],np++ mov $nhi,#0 umlal $nlo,$nhi,$nj,$n0 @ np[j]*n0 - ldr $tj,[$tp,#8] @ tp[j+1] adc $ahi,$ahi,#0 + ldr $tj,[$tp,#8] @ tp[j+1] adds $nlo,$nlo,$alo str $nlo,[$tp],#4 @ tp[j-1]=,tp++ adc $nlo,$nhi,#0 @@ -144,13 +147,13 @@ bn_mul_mont: adds $nlo,$nlo,$ahi mov $nhi,#0 + ldr $tp,[$_bp] @ restore bp adc $nhi,$nhi,#0 + ldr $n0,[$_n0] @ restore n0 adds $nlo,$nlo,$tj - adc $nhi,$nhi,#0 - ldr $tp,[$_bp] @ restore bp ldr $tj,[$_bpend] @ restore &bp[num] + adc $nhi,$nhi,#0 str $nlo,[$num] @ tp[num-1]= - ldr $n0,[$_n0] @ restore n0 str $nhi,[$num,#4] @ tp[num]= cmp $tp,$tj |