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[strongswan.git] / src / libfreeswan / libcrypto / oldlibdes / des / asm / perlasm / x86unix.pl
1 #!/usr/bin/perl
2
3 package x86unix;
4
5 $label="L000";
6
7 $align=($main'aout)?"4":"16";
8 $under=($main'aout)?"_":"";
9 $com_start=($main'sol)?"/":"#";
10
11 sub main'asm_init_output { @out=(); }
12 sub main'asm_get_output { return(@out); }
13 sub main'get_labels { return(@labels); }
14 sub main'external_label { push(@labels,@_); }
15
16 if ($main'cpp)
17 {
18 $align="ALIGN";
19 $under="";
20 $com_start='/*';
21 $com_end='*/';
22 }
23
24 %lb=( 'eax', '%al',
25 'ebx', '%bl',
26 'ecx', '%cl',
27 'edx', '%dl',
28 'ax', '%al',
29 'bx', '%bl',
30 'cx', '%cl',
31 'dx', '%dl',
32 );
33
34 %hb=( 'eax', '%ah',
35 'ebx', '%bh',
36 'ecx', '%ch',
37 'edx', '%dh',
38 'ax', '%ah',
39 'bx', '%bh',
40 'cx', '%ch',
41 'dx', '%dh',
42 );
43
44 %regs=( 'eax', '%eax',
45 'ebx', '%ebx',
46 'ecx', '%ecx',
47 'edx', '%edx',
48 'esi', '%esi',
49 'edi', '%edi',
50 'ebp', '%ebp',
51 'esp', '%esp',
52 );
53
54 %reg_val=(
55 'eax', 0x00,
56 'ebx', 0x03,
57 'ecx', 0x01,
58 'edx', 0x02,
59 'esi', 0x06,
60 'edi', 0x07,
61 'ebp', 0x05,
62 'esp', 0x04,
63 );
64
65 sub main'LB
66 {
67 (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
68 return($lb{$_[0]});
69 }
70
71 sub main'HB
72 {
73 (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
74 return($hb{$_[0]});
75 }
76
77 sub main'DWP
78 {
79 local($addr,$reg1,$reg2,$idx)=@_;
80
81 $ret="";
82 $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
83 $reg1="$regs{$reg1}" if defined($regs{$reg1});
84 $reg2="$regs{$reg2}" if defined($regs{$reg2});
85 $ret.=$addr if ($addr ne "") && ($addr ne 0);
86 if ($reg2 ne "")
87 { $ret.="($reg1,$reg2,$idx)"; }
88 else
89 { $ret.="($reg1)" }
90 return($ret);
91 }
92
93 sub main'BP
94 {
95 return(&main'DWP(@_));
96 }
97
98 #sub main'BP
99 # {
100 # local($addr,$reg1,$reg2,$idx)=@_;
101 #
102 # $ret="";
103 #
104 # $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
105 # $reg1="$regs{$reg1}" if defined($regs{$reg1});
106 # $reg2="$regs{$reg2}" if defined($regs{$reg2});
107 # $ret.=$addr if ($addr ne "") && ($addr ne 0);
108 # if ($reg2 ne "")
109 # { $ret.="($reg1,$reg2,$idx)"; }
110 # else
111 # { $ret.="($reg1)" }
112 # return($ret);
113 # }
114
115 sub main'mov { &out2("movl",@_); }
116 sub main'movb { &out2("movb",@_); }
117 sub main'and { &out2("andl",@_); }
118 sub main'or { &out2("orl",@_); }
119 sub main'shl { &out2("sall",@_); }
120 sub main'shr { &out2("shrl",@_); }
121 sub main'xor { &out2("xorl",@_); }
122 sub main'xorb { &out2("xorb",@_); }
123 sub main'add { &out2("addl",@_); }
124 sub main'adc { &out2("adcl",@_); }
125 sub main'sub { &out2("subl",@_); }
126 sub main'rotl { &out2("roll",@_); }
127 sub main'rotr { &out2("rorl",@_); }
128 sub main'exch { &out2("xchg",@_); }
129 sub main'cmp { &out2("cmpl",@_); }
130 sub main'lea { &out2("leal",@_); }
131 sub main'mul { &out1("mull",@_); }
132 sub main'div { &out1("divl",@_); }
133 sub main'jmp { &out1("jmp",@_); }
134 sub main'jmp_ptr { &out1p("jmp",@_); }
135 sub main'je { &out1("je",@_); }
136 sub main'jle { &out1("jle",@_); }
137 sub main'jne { &out1("jne",@_); }
138 sub main'jnz { &out1("jnz",@_); }
139 sub main'jz { &out1("jz",@_); }
140 sub main'jge { &out1("jge",@_); }
141 sub main'jl { &out1("jl",@_); }
142 sub main'jb { &out1("jb",@_); }
143 sub main'dec { &out1("decl",@_); }
144 sub main'inc { &out1("incl",@_); }
145 sub main'push { &out1("pushl",@_); $stack+=4; }
146 sub main'pop { &out1("popl",@_); $stack-=4; }
147 sub main'bswap { &out1("bswapl",@_); }
148 sub main'not { &out1("notl",@_); }
149 sub main'call { &out1("call",$under.$_[0]); }
150 sub main'ret { &out0("ret"); }
151 sub main'nop { &out0("nop"); }
152
153 sub out2
154 {
155 local($name,$p1,$p2)=@_;
156 local($l,$ll,$t);
157 local(%special)=( "roll",0xD1C0,"rorl",0xD1C8,
158 "rcll",0xD1D0,"rcrl",0xD1D8,
159 "shll",0xD1E0,"shrl",0xD1E8,
160 "sarl",0xD1F8);
161
162 if ((defined($special{$name})) && defined($regs{$p1}) && ($p2 == 1))
163 {
164 $op=$special{$name}|$reg_val{$p1};
165 $tmp1=sprintf ".byte %d\n",($op>>8)&0xff;
166 $tmp2=sprintf ".byte %d\t",$op &0xff;
167 push(@out,$tmp1);
168 push(@out,$tmp2);
169
170 $p2=&conv($p2);
171 $p1=&conv($p1);
172 &main'comment("$name $p2 $p1");
173 return;
174 }
175
176 push(@out,"\t$name\t");
177 $t=&conv($p2).",";
178 $l=length($t);
179 push(@out,$t);
180 $ll=4-($l+9)/8;
181 $tmp1=sprintf "\t" x $ll;
182 push(@out,$tmp1);
183 push(@out,&conv($p1)."\n");
184 }
185
186 sub out1
187 {
188 local($name,$p1)=@_;
189 local($l,$t);
190
191 push(@out,"\t$name\t".&conv($p1)."\n");
192 }
193
194 sub out1p
195 {
196 local($name,$p1)=@_;
197 local($l,$t);
198
199 push(@out,"\t$name\t*".&conv($p1)."\n");
200 }
201
202 sub out0
203 {
204 push(@out,"\t$_[0]\n");
205 }
206
207 sub conv
208 {
209 local($p)=@_;
210
211 # $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
212
213 $p=$regs{$p} if (defined($regs{$p}));
214
215 $p =~ s/^(-{0,1}[0-9A-Fa-f]+)$/\$$1/;
216 $p =~ s/^(0x[0-9A-Fa-f]+)$/\$$1/;
217 return $p;
218 }
219
220 sub main'file
221 {
222 local($file)=@_;
223
224 local($tmp)=<<"EOF";
225 .file "$file.s"
226 .version "01.01"
227 gcc2_compiled.:
228 EOF
229 push(@out,$tmp);
230 }
231
232 sub main'function_begin
233 {
234 local($func)=@_;
235
236 $func=$under.$func;
237
238 local($tmp)=<<"EOF";
239 .text
240 .align $align
241 .globl $func
242 EOF
243 push(@out,$tmp);
244 if ($main'cpp)
245 { $tmp=push(@out,"\tTYPE($func,\@function)\n"); }
246 else { $tmp=push(@out,"\t.type\t$func,\@function\n"); }
247 push(@out,"$func:\n");
248 $tmp=<<"EOF";
249 pushl %ebp
250 pushl %ebx
251 pushl %esi
252 pushl %edi
253
254 EOF
255 push(@out,$tmp);
256 $stack=20;
257 }
258
259 sub main'function_begin_B
260 {
261 local($func,$extra)=@_;
262
263 $func=$under.$func;
264
265 local($tmp)=<<"EOF";
266 .text
267 .align $align
268 .globl $func
269 EOF
270 push(@out,$tmp);
271 if ($main'cpp)
272 { push(@out,"\tTYPE($func,\@function)\n"); }
273 else { push(@out,"\t.type $func,\@function\n"); }
274 push(@out,"$func:\n");
275 $stack=4;
276 }
277
278 sub main'function_end
279 {
280 local($func)=@_;
281
282 $func=$under.$func;
283
284 local($tmp)=<<"EOF";
285 popl %edi
286 popl %esi
287 popl %ebx
288 popl %ebp
289 ret
290 .${func}_end:
291 EOF
292 push(@out,$tmp);
293 if ($main'cpp)
294 { push(@out,"\tSIZE($func,.${func}_end-$func)\n"); }
295 else { push(@out,"\t.size\t$func,.${func}_end-$func\n"); }
296 push(@out,".ident \"$func\"\n");
297 $stack=0;
298 %label=();
299 }
300
301 sub main'function_end_A
302 {
303 local($func)=@_;
304
305 local($tmp)=<<"EOF";
306 popl %edi
307 popl %esi
308 popl %ebx
309 popl %ebp
310 ret
311 EOF
312 push(@out,$tmp);
313 }
314
315 sub main'function_end_B
316 {
317 local($func)=@_;
318
319 $func=$under.$func;
320
321 push(@out,".${func}_end:\n");
322 if ($main'cpp)
323 { push(@out,"\tSIZE($func,.${func}_end-$func)\n"); }
324 else { push(@out,"\t.size\t$func,.${func}_end-$func\n"); }
325 push(@out,".ident \"desasm.pl\"\n");
326 $stack=0;
327 %label=();
328 }
329
330 sub main'wparam
331 {
332 local($num)=@_;
333
334 return(&main'DWP($stack+$num*4,"esp","",0));
335 }
336
337 sub main'stack_push
338 {
339 local($num)=@_;
340 $stack+=$num*4;
341 &main'sub("esp",$num*4);
342 }
343
344 sub main'stack_pop
345 {
346 local($num)=@_;
347 $stack-=$num*4;
348 &main'add("esp",$num*4);
349 }
350
351 sub main'swtmp
352 {
353 return(&main'DWP($_[0]*4,"esp","",0));
354 }
355
356 # Should use swtmp, which is above esp. Linix can trash the stack above esp
357 #sub main'wtmp
358 # {
359 # local($num)=@_;
360 #
361 # return(&main'DWP(-($num+1)*4,"esp","",0));
362 # }
363
364 sub main'comment
365 {
366 foreach (@_)
367 {
368 if (/^\s*$/)
369 { push(@out,"\n"); }
370 else
371 { push(@out,"\t$com_start $_ $com_end\n"); }
372 }
373 }
374
375 sub main'label
376 {
377 if (!defined($label{$_[0]}))
378 {
379 $label{$_[0]}=".${label}${_[0]}";
380 $label++;
381 }
382 return($label{$_[0]});
383 }
384
385 sub main'set_label
386 {
387 if (!defined($label{$_[0]}))
388 {
389 $label{$_[0]}=".${label}${_[0]}";
390 $label++;
391 }
392 push(@out,".align $align\n") if ($_[1] != 0);
393 push(@out,"$label{$_[0]}:\n");
394 }
395
396 sub main'file_end
397 {
398 }
399
400 sub main'data_word
401 {
402 push(@out,"\t.long $_[0]\n");
403 }