2 # Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 # Licensed under the OpenSSL license (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}","${dir}../../perlasm");
16 open STDOUT,">$output";
18 &asm_init($ARGV[0],$ARGV[$#ARGV] eq "386");
21 $BF_OFF=($BF_ROUNDS+2)*4;
30 &BF_encrypt("BF_encrypt",1);
31 &BF_encrypt("BF_decrypt",0);
32 &cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1);
41 &function_begin_B($name,"");
47 &mov($tmp2,&wparam(0));
52 &comment("Load the 2 words");
53 &mov($L,&DWP(0,$tmp2,"",0));
54 &mov($R,&DWP(4,$tmp2,"",0));
62 &mov($tmp2,&DWP(0,$P,"",0));
66 for ($i=0; $i<$BF_ROUNDS; $i+=2)
70 &BF_ENCRYPT($i+1,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
73 &comment("Round ".sprintf("%d",$i+1));
74 &BF_ENCRYPT($i+2,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
76 # &mov($tmp1,&wparam(0)); In last loop
77 &mov($tmp4,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
81 &mov($tmp2,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
85 for ($i=$BF_ROUNDS; $i>0; $i-=2)
89 &BF_ENCRYPT($i,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
91 &comment("Round ".sprintf("%d",$i-1));
92 &BF_ENCRYPT($i-1,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
94 # &mov($tmp1,&wparam(0)); In last loop
95 &mov($tmp4,&DWP(0,$P,"",0));
99 &mov(&DWP(4,$tmp1,"",0),$L);
101 &mov(&DWP(0,$tmp1,"",0),$R);
102 &function_end($name);
107 local($i,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,$enc)=@_;
109 &mov( $tmp4, &DWP(&n2a($i*4),$P,"",0)); # for next round
117 &movb( &LB($tmp1), &HB($tmp2)); # A
118 &and( $tmp2, 0xff); # B
120 &movb( &LB($tmp3), &HB($tmp4)); # C
121 &and( $tmp4, 0xff); # D
123 &mov( $tmp1, &DWP(&n2a($BF_OFF+0x0000),$P,$tmp1,4));
124 &mov( $tmp2, &DWP(&n2a($BF_OFF+0x0400),$P,$tmp2,4));
127 &mov( $tmp1, &DWP(&n2a($BF_OFF+0x0800),$P,$tmp3,4));
130 &mov( $tmp4, &DWP(&n2a($BF_OFF+0x0C00),$P,$tmp4,4));
133 if (($enc && ($i != 16)) || ((!$enc) && ($i != 1)))
134 { &xor( $tmp1, $tmp1); }
137 &comment("Load parameter 0 ($i) enc=$enc");
138 &mov($tmp1,&wparam(0));