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80 lines
1.3 KiB
Raku
80 lines
1.3 KiB
Raku
#!/usr/local/bin/perl
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$L="edi";
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$R="esi";
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sub DES_encrypt3
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{
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local($name,$enc)=@_;
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&function_begin_B($name,"");
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&push("ebx");
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&mov("ebx",&wparam(0));
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&push("ebp");
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&push("esi");
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&push("edi");
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&comment("");
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&comment("Load the data words");
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&mov($L,&DWP(0,"ebx","",0));
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&mov($R,&DWP(4,"ebx","",0));
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&stack_push(3);
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&comment("");
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&comment("IP");
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&IP_new($L,$R,"edx",0);
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# put them back
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if ($enc)
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{
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&mov(&DWP(4,"ebx","",0),$R);
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&mov("eax",&wparam(1));
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&mov(&DWP(0,"ebx","",0),"edx");
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&mov("edi",&wparam(2));
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&mov("esi",&wparam(3));
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}
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else
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{
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&mov(&DWP(4,"ebx","",0),$R);
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&mov("esi",&wparam(1));
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&mov(&DWP(0,"ebx","",0),"edx");
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&mov("edi",&wparam(2));
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&mov("eax",&wparam(3));
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}
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&mov(&swtmp(2), (DWC(($enc)?"1":"0")));
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&mov(&swtmp(1), "eax");
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&mov(&swtmp(0), "ebx");
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&call("DES_encrypt2");
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&mov(&swtmp(2), (DWC(($enc)?"0":"1")));
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&mov(&swtmp(1), "edi");
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&mov(&swtmp(0), "ebx");
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&call("DES_encrypt2");
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&mov(&swtmp(2), (DWC(($enc)?"1":"0")));
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&mov(&swtmp(1), "esi");
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&mov(&swtmp(0), "ebx");
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&call("DES_encrypt2");
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&stack_pop(3);
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&mov($L,&DWP(0,"ebx","",0));
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&mov($R,&DWP(4,"ebx","",0));
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&comment("");
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&comment("FP");
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&FP_new($L,$R,"eax",0);
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&mov(&DWP(0,"ebx","",0),"eax");
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&mov(&DWP(4,"ebx","",0),$R);
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&pop("edi");
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&pop("esi");
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&pop("ebp");
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&pop("ebx");
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&ret();
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&function_end_B($name);
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}
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