2 # Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
4 # Licensed under the Apache License 2.0 (the "License"). You may not use
5 # this file except in compliance with the License. You can obtain a copy
6 # in the file LICENSE in the source distribution or at
7 # https://www.openssl.org/source/license.html
10 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
11 push(@INC,"${dir}","${dir}../../perlasm");
15 $output = pop and open STDOUT,">$output";
17 &asm_init($ARGV[0],$ARGV[$#ARGV] eq "386");
20 $BF_OFF=($BF_ROUNDS+2)*4;
29 &BF_encrypt("BF_encrypt",1);
30 &BF_encrypt("BF_decrypt",0);
31 &cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1);
34 close STDOUT or die "error closing STDOUT: $!";
40 &function_begin_B($name,"");
46 &mov($tmp2,&wparam(0));
51 &comment("Load the 2 words");
52 &mov($L,&DWP(0,$tmp2,"",0));
53 &mov($R,&DWP(4,$tmp2,"",0));
61 &mov($tmp2,&DWP(0,$P,"",0));
65 for ($i=0; $i<$BF_ROUNDS; $i+=2)
69 &BF_ENCRYPT($i+1,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
72 &comment("Round ".sprintf("%d",$i+1));
73 &BF_ENCRYPT($i+2,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
75 # &mov($tmp1,&wparam(0)); In last loop
76 &mov($tmp4,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
80 &mov($tmp2,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
84 for ($i=$BF_ROUNDS; $i>0; $i-=2)
88 &BF_ENCRYPT($i,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
90 &comment("Round ".sprintf("%d",$i-1));
91 &BF_ENCRYPT($i-1,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
93 # &mov($tmp1,&wparam(0)); In last loop
94 &mov($tmp4,&DWP(0,$P,"",0));
98 &mov(&DWP(4,$tmp1,"",0),$L);
100 &mov(&DWP(0,$tmp1,"",0),$R);
101 &function_end($name);
106 local($i,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,$enc)=@_;
108 &mov( $tmp4, &DWP(&n2a($i*4),$P,"",0)); # for next round
116 &movb( &LB($tmp1), &HB($tmp2)); # A
117 &and( $tmp2, 0xff); # B
119 &movb( &LB($tmp3), &HB($tmp4)); # C
120 &and( $tmp4, 0xff); # D
122 &mov( $tmp1, &DWP(&n2a($BF_OFF+0x0000),$P,$tmp1,4));
123 &mov( $tmp2, &DWP(&n2a($BF_OFF+0x0400),$P,$tmp2,4));
126 &mov( $tmp1, &DWP(&n2a($BF_OFF+0x0800),$P,$tmp3,4));
129 &mov( $tmp4, &DWP(&n2a($BF_OFF+0x0C00),$P,$tmp4,4));
132 if (($enc && ($i != 16)) || ((!$enc) && ($i != 1)))
133 { &xor( $tmp1, $tmp1); }
136 &comment("Load parameter 0 ($i) enc=$enc");
137 &mov($tmp1,&wparam(0));