27080a0f83099d1f94881f9fbd47db7b8665a0db
[openssl.git] / crypto / perlasm / x86nasm.pl
1 #!/usr/local/bin/perl
2
3 package x86nasm;
4
5 $label="L000";
6 $under=($main'netware)?'':'_';
7
8 %lb=(   'eax',  'al',
9         'ebx',  'bl',
10         'ecx',  'cl',
11         'edx',  'dl',
12         'ax',   'al',
13         'bx',   'bl',
14         'cx',   'cl',
15         'dx',   'dl',
16         );
17
18 %hb=(   'eax',  'ah',
19         'ebx',  'bh',
20         'ecx',  'ch',
21         'edx',  'dh',
22         'ax',   'ah',
23         'bx',   'bh',
24         'cx',   'ch',
25         'dx',   'dh',
26         );
27
28 sub main'asm_init_output { @out=(); }
29 sub main'asm_get_output { return(@out); }
30 sub main'get_labels { return(@labels); }
31
32 sub main'external_label
33 {
34         push(@labels,@_);
35         foreach (@_) {
36                 push(@out,".") if ($main'mwerks);
37                 push(@out, "extern\t${under}$_\n");
38         }
39 }
40
41 sub main'LB
42         {
43         (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
44         return($lb{$_[0]});
45         }
46
47 sub main'HB
48         {
49         (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
50         return($hb{$_[0]});
51         }
52
53 sub main'BP
54         {
55         &get_mem("BYTE",@_);
56         }
57
58 sub main'DWP
59         {
60         &get_mem("DWORD",@_);
61         }
62
63 sub main'QWP
64         {
65         &get_mem("",@_);
66         }
67
68 sub main'BC
69         {
70         return (($main'mwerks)?"":"BYTE ")."@_";
71         }
72
73 sub main'DWC
74         {
75         return (($main'mwerks)?"":"DWORD ")."@_";
76         }
77
78 sub main'stack_push
79         {
80         my($num)=@_;
81         $stack+=$num*4;
82         &main'sub("esp",$num*4);
83         }
84
85 sub main'stack_pop
86         {
87         my($num)=@_;
88         $stack-=$num*4;
89         &main'add("esp",$num*4);
90         }
91
92 sub get_mem
93         {
94         my($size,$addr,$reg1,$reg2,$idx)=@_;
95         my($t,$post);
96         my($ret)=$size;
97         if ($ret ne "")
98                 {
99                 $ret .= " PTR" if ($main'mwerks);
100                 $ret .= " ";
101                 }
102         $ret .= "[";
103         $addr =~ s/^\s+//;
104         if ($addr =~ /^(.+)\+(.+)$/)
105                 {
106                 $reg2=&conv($1);
107                 $addr="$under$2";
108                 }
109         elsif ($addr =~ /^[_a-zA-Z]/)
110                 {
111                 $addr="$under$addr";
112                 }
113
114         if ($addr =~ /^.+\-.+$/) { $addr="($addr)"; }
115
116         $reg1="$regs{$reg1}" if defined($regs{$reg1});
117         $reg2="$regs{$reg2}" if defined($regs{$reg2});
118         if (($addr ne "") && ($addr ne 0))
119                 {
120                 if ($addr !~ /^-/)
121                         { $ret.="${addr}+"; }
122                 else    { $post=$addr; }
123                 }
124         if ($reg2 ne "")
125                 {
126                 $t="";
127                 $t="*$idx" if ($idx != 0);
128                 $reg1="+".$reg1 if ("$reg1$post" ne "");
129                 $ret.="$reg2$t$reg1$post]";
130                 }
131         else
132                 {
133                 $ret.="$reg1$post]"
134                 }
135         $ret =~ s/\+\]/]/; # in case $addr was the only argument
136         return($ret);
137         }
138
139 sub main'mov    { &out2("mov",@_); }
140 sub main'movb   { &out2("mov",@_); }
141 sub main'and    { &out2("and",@_); }
142 sub main'or     { &out2("or",@_); }
143 sub main'shl    { &out2("shl",@_); }
144 sub main'shr    { &out2("shr",@_); }
145 sub main'xor    { &out2("xor",@_); }
146 sub main'xorb   { &out2("xor",@_); }
147 sub main'add    { &out2("add",@_); }
148 sub main'adc    { &out2("adc",@_); }
149 sub main'sub    { &out2("sub",@_); }
150 sub main'sbb    { &out2("sbb",@_); }
151 sub main'rotl   { &out2("rol",@_); }
152 sub main'rotr   { &out2("ror",@_); }
153 sub main'exch   { &out2("xchg",@_); }
154 sub main'cmp    { &out2("cmp",@_); }
155 sub main'lea    { &out2("lea",@_); }
156 sub main'mul    { &out1("mul",@_); }
157 sub main'div    { &out1("div",@_); }
158 sub main'dec    { &out1("dec",@_); }
159 sub main'inc    { &out1("inc",@_); }
160 sub main'jmp    { &out1("jmp",@_); }
161 sub main'jmp_ptr { &out1p("jmp",@_); }
162
163 # This is a bit of a kludge: declare all branches as NEAR.
164 $near=($main'mwerks)?'':'NEAR';
165 sub main'je     { &out1("je $near",@_); }
166 sub main'jle    { &out1("jle $near",@_); }
167 sub main'jz     { &out1("jz $near",@_); }
168 sub main'jge    { &out1("jge $near",@_); }
169 sub main'jl     { &out1("jl $near",@_); }
170 sub main'ja     { &out1("ja $near",@_); }
171 sub main'jae    { &out1("jae $near",@_); }
172 sub main'jb     { &out1("jb $near",@_); }
173 sub main'jbe    { &out1("jbe $near",@_); }
174 sub main'jc     { &out1("jc $near",@_); }
175 sub main'jnc    { &out1("jnc $near",@_); }
176 sub main'jnz    { &out1("jnz $near",@_); }
177 sub main'jne    { &out1("jne $near",@_); }
178 sub main'jno    { &out1("jno $near",@_); }
179
180 sub main'push   { &out1("push",@_); $stack+=4; }
181 sub main'pop    { &out1("pop",@_); $stack-=4; }
182 sub main'pushf  { &out0("pushfd"); $stack+=4; }
183 sub main'popf   { &out0("popfd"); $stack-=4; }
184 sub main'bswap  { &out1("bswap",@_); &using486(); }
185 sub main'not    { &out1("not",@_); }
186 sub main'call   { &out1("call",($_[0]=~/^\@L/?'':$under).$_[0]); }
187 sub main'ret    { &out0("ret"); }
188 sub main'nop    { &out0("nop"); }
189 sub main'test   { &out2("test",@_); }
190 sub main'bt     { &out2("bt",@_); }
191 sub main'leave  { &out0("leave"); }
192 sub main'cpuid  { &out0("cpuid"); }
193 sub main'rdtsc  { &out0("rdtsc"); }
194 sub main'halt   { &out0("hlt"); }
195
196 # SSE2
197 sub main'emms   { &out0("emms"); }
198 sub main'movd   { &out2("movd",@_); }
199 sub main'movq   { &out2("movq",@_); }
200 sub main'movdqu { &out2("movdqu",@_); }
201 sub main'movdqa { &out2("movdqa",@_); }
202 sub main'movdq2q{ &out2("movdq2q",@_); }
203 sub main'movq2dq{ &out2("movq2dq",@_); }
204 sub main'paddq  { &out2("paddq",@_); }
205 sub main'pmuludq{ &out2("pmuludq",@_); }
206 sub main'psrlq  { &out2("psrlq",@_); }
207 sub main'psllq  { &out2("psllq",@_); }
208 sub main'pxor   { &out2("pxor",@_); }
209 sub main'por    { &out2("por",@_); }
210 sub main'pand   { &out2("pand",@_); }
211
212 sub out2
213         {
214         my($name,$p1,$p2)=@_;
215         my($l,$t);
216
217         push(@out,"\t$name\t");
218         if (!$main'mwerks and $name eq "lea")
219                 {
220                 $p1 =~ s/^[^\[]*\[/\[/;
221                 $p2 =~ s/^[^\[]*\[/\[/;
222                 }
223         $t=&conv($p1).",";
224         $l=length($t);
225         push(@out,$t);
226         $l=4-($l+9)/8;
227         push(@out,"\t" x $l);
228         push(@out,&conv($p2));
229         push(@out,"\n");
230         }
231
232 sub out0
233         {
234         my($name)=@_;
235
236         push(@out,"\t$name\n");
237         }
238
239 sub out1
240         {
241         my($name,$p1)=@_;
242         my($l,$t);
243         push(@out,"\t$name\t".&conv($p1)."\n");
244         }
245
246 sub conv
247         {
248         my($p)=@_;
249         $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
250         return $p;
251         }
252
253 sub using486
254         {
255         return if $using486;
256         $using486++;
257         grep(s/\.386/\.486/,@out);
258         }
259
260 sub main'file
261         {
262         push(@out,".") if ($main'mwerks);
263         push(@out,"section\t.text\n");
264         }
265
266 sub main'function_begin
267         {
268         my($func,$extra)=@_;
269
270         push(@labels,$func);
271         my($tmp)=<<"EOF";
272 global  $under$func
273 $under$func:
274         push    ebp
275         push    ebx
276         push    esi
277         push    edi
278 EOF
279         push(@out,$tmp);
280         $stack=20;
281         }
282
283 sub main'function_begin_B
284         {
285         my($func,$extra)=@_;
286         my($tmp)=<<"EOF";
287 global  $under$func
288 $under$func:
289 EOF
290         push(@out,$tmp);
291         $stack=4;
292         }
293
294 sub main'function_end
295         {
296         my($func)=@_;
297
298         my($tmp)=<<"EOF";
299         pop     edi
300         pop     esi
301         pop     ebx
302         pop     ebp
303         ret
304 EOF
305         push(@out,$tmp);
306         $stack=0;
307         %label=();
308         }
309
310 sub main'function_end_B
311         {
312         $stack=0;
313         %label=();
314         }
315
316 sub main'function_end_A
317         {
318         my($func)=@_;
319
320         my($tmp)=<<"EOF";
321         pop     edi
322         pop     esi
323         pop     ebx
324         pop     ebp
325         ret
326 EOF
327         push(@out,$tmp);
328         }
329
330 sub main'file_end
331         {
332         }
333
334 sub main'wparam
335         {
336         my($num)=@_;
337
338         return(&main'DWP($stack+$num*4,"esp","",0));
339         }
340
341 sub main'swtmp
342         {
343         return(&main'DWP($_[0]*4,"esp","",0));
344         }
345
346 # Should use swtmp, which is above esp.  Linix can trash the stack above esp
347 #sub main'wtmp
348 #       {
349 #       my($num)=@_;
350 #
351 #       return(&main'DWP(-(($num+1)*4),"esp","",0));
352 #       }
353
354 sub main'comment
355         {
356         foreach (@_)
357                 {
358                 push(@out,"\t; $_\n");
359                 }
360         }
361
362 sub main'label
363         {
364         if (!defined($label{$_[0]}))
365                 {
366                 $label{$_[0]}="\@${label}${_[0]}";
367                 $label++;
368                 }
369         return($label{$_[0]});
370         }
371
372 sub main'set_label
373         {
374         if (!defined($label{$_[0]}))
375                 {
376                 $label{$_[0]}="\@${label}${_[0]}";
377                 $label++;
378                 }
379         push(@out,"$label{$_[0]}:\n");
380         }
381
382 sub main'data_word
383         {
384         push(@out,(($main'mwerks)?".long\t":"DD\t").join(',',@_)."\n");
385         }
386
387 sub main'align
388         {
389         push(@out,".") if ($main'mwerks);
390         push(@out,"align\t$_[0]\n");
391         }
392
393 sub out1p
394         {
395         my($name,$p1)=@_;
396         my($l,$t);
397
398         push(@out,"\t$name\t ".&conv($p1)."\n");
399         }
400
401 sub main'picmeup
402         {
403         local($dst,$sym)=@_;
404         &main'lea($dst,&main'DWP($sym));
405         }
406
407 sub main'blindpop { &out1("pop",@_); }
408
409 sub main'initseg
410         {
411         local($f)=@_;
412         if ($main'win32)
413                 {
414                 local($tmp)=<<___;
415 segment .CRT\$XIU data
416 extern  $under$f
417 DD      $under$f
418 ___
419                 push(@out,$tmp);
420                 }
421         }
422
423 1;