3 push(@INC,"perlasm","../../perlasm");
7 &asm_init($ARGV[0],"bf-586.pl",$ARGV[$#ARGV] eq "386");
10 $BF_OFF=($BF_ROUNDS+2)*4;
19 &BF_encrypt("BF_encrypt",1);
20 &BF_encrypt("BF_decrypt",0);
21 &cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1);
28 &function_begin_B($name,"");
34 &mov($tmp2,&wparam(0));
39 &comment("Load the 2 words");
40 &mov($L,&DWP(0,$tmp2,"",0));
41 &mov($R,&DWP(4,$tmp2,"",0));
49 &mov($tmp2,&DWP(0,$P,"",0));
53 for ($i=0; $i<$BF_ROUNDS; $i+=2)
57 &BF_ENCRYPT($i+1,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
60 &comment("Round ".sprintf("%d",$i+1));
61 &BF_ENCRYPT($i+2,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
63 # &mov($tmp1,&wparam(0)); In last loop
64 &mov($tmp4,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
68 &mov($tmp2,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
72 for ($i=$BF_ROUNDS; $i>0; $i-=2)
76 &BF_ENCRYPT($i,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
78 &comment("Round ".sprintf("%d",$i-1));
79 &BF_ENCRYPT($i-1,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
81 # &mov($tmp1,&wparam(0)); In last loop
82 &mov($tmp4,&DWP(0,$P,"",0));
86 &mov(&DWP(4,$tmp1,"",0),$L);
88 &mov(&DWP(0,$tmp1,"",0),$R);
94 local($i,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,$enc)=@_;
96 &mov( $tmp4, &DWP(&n2a($i*4),$P,"",0)); # for next round
104 &movb( &LB($tmp1), &HB($tmp2)); # A
105 &and( $tmp2, 0xff); # B
107 &movb( &LB($tmp3), &HB($tmp4)); # C
108 &and( $tmp4, 0xff); # D
110 &mov( $tmp1, &DWP(&n2a($BF_OFF+0x0000),$P,$tmp1,4));
111 &mov( $tmp2, &DWP(&n2a($BF_OFF+0x0400),$P,$tmp2,4));
114 &mov( $tmp1, &DWP(&n2a($BF_OFF+0x0800),$P,$tmp3,4));
117 &mov( $tmp4, &DWP(&n2a($BF_OFF+0x0C00),$P,$tmp4,4));
120 if (($enc && ($i != 16)) || ((!$enc) && ($i != 1)))
121 { &xor( $tmp1, $tmp1); }
124 &comment("Load parameter 0 ($i) enc=$enc");
125 &mov($tmp1,&wparam(0));