Option to set current cert to server certificate.
[openssl.git] / crypto / x86_64cpuid.pl
1 #!/usr/bin/env perl
2
3 $flavour = shift;
4 $output  = shift;
5 if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
6
7 $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
8
9 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
10 ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
11 ( $xlate="${dir}perlasm/x86_64-xlate.pl" and -f $xlate) or
12 die "can't locate x86_64-xlate.pl";
13
14 open OUT,"| \"$^X\" $xlate $flavour $output";
15 *STDOUT=*OUT;
16
17 ($arg1,$arg2,$arg3,$arg4)=$win64?("%rcx","%rdx","%r8", "%r9") : # Win64 order
18                                  ("%rdi","%rsi","%rdx","%rcx"); # Unix order
19
20 print<<___;
21 .extern         OPENSSL_cpuid_setup
22 .hidden         OPENSSL_cpuid_setup
23 .section        .init
24         call    OPENSSL_cpuid_setup
25
26 .hidden OPENSSL_ia32cap_P
27 .comm   OPENSSL_ia32cap_P,16,4
28
29 .text
30
31 .globl  OPENSSL_atomic_add
32 .type   OPENSSL_atomic_add,\@abi-omnipotent
33 .align  16
34 OPENSSL_atomic_add:
35         movl    ($arg1),%eax
36 .Lspin: leaq    ($arg2,%rax),%r8
37         .byte   0xf0            # lock
38         cmpxchgl        %r8d,($arg1)
39         jne     .Lspin
40         movl    %r8d,%eax
41         .byte   0x48,0x98       # cltq/cdqe
42         ret
43 .size   OPENSSL_atomic_add,.-OPENSSL_atomic_add
44
45 .globl  OPENSSL_rdtsc
46 .type   OPENSSL_rdtsc,\@abi-omnipotent
47 .align  16
48 OPENSSL_rdtsc:
49         rdtsc
50         shl     \$32,%rdx
51         or      %rdx,%rax
52         ret
53 .size   OPENSSL_rdtsc,.-OPENSSL_rdtsc
54
55 .globl  OPENSSL_ia32_cpuid
56 .type   OPENSSL_ia32_cpuid,\@function,1
57 .align  16
58 OPENSSL_ia32_cpuid:
59         mov     %rbx,%r8                # save %rbx
60
61         xor     %eax,%eax
62         mov     %eax,8(%rdi)            # clear 3rd word
63         cpuid
64         mov     %eax,%r11d              # max value for standard query level
65
66         xor     %eax,%eax
67         cmp     \$0x756e6547,%ebx       # "Genu"
68         setne   %al
69         mov     %eax,%r9d
70         cmp     \$0x49656e69,%edx       # "ineI"
71         setne   %al
72         or      %eax,%r9d
73         cmp     \$0x6c65746e,%ecx       # "ntel"
74         setne   %al
75         or      %eax,%r9d               # 0 indicates Intel CPU
76         jz      .Lintel
77
78         cmp     \$0x68747541,%ebx       # "Auth"
79         setne   %al
80         mov     %eax,%r10d
81         cmp     \$0x69746E65,%edx       # "enti"
82         setne   %al
83         or      %eax,%r10d
84         cmp     \$0x444D4163,%ecx       # "cAMD"
85         setne   %al
86         or      %eax,%r10d              # 0 indicates AMD CPU
87         jnz     .Lintel
88
89         # AMD specific
90         mov     \$0x80000000,%eax
91         cpuid
92         cmp     \$0x80000001,%eax
93         jb      .Lintel
94         mov     %eax,%r10d
95         mov     \$0x80000001,%eax
96         cpuid
97         or      %ecx,%r9d
98         and     \$0x00000801,%r9d       # isolate AMD XOP bit, 1<<11
99
100         cmp     \$0x80000008,%r10d
101         jb      .Lintel
102
103         mov     \$0x80000008,%eax
104         cpuid
105         movzb   %cl,%r10                # number of cores - 1
106         inc     %r10                    # number of cores
107
108         mov     \$1,%eax
109         cpuid
110         bt      \$28,%edx               # test hyper-threading bit
111         jnc     .Lgeneric
112         shr     \$16,%ebx               # number of logical processors
113         cmp     %r10b,%bl
114         ja      .Lgeneric
115         and     \$0xefffffff,%edx       # ~(1<<28)
116         jmp     .Lgeneric
117
118 .Lintel:
119         cmp     \$4,%r11d
120         mov     \$-1,%r10d
121         jb      .Lnocacheinfo
122
123         mov     \$4,%eax
124         mov     \$0,%ecx                # query L1D
125         cpuid
126         mov     %eax,%r10d
127         shr     \$14,%r10d
128         and     \$0xfff,%r10d           # number of cores -1 per L1D
129
130         cmp     \$7,%r11d
131         jb      .Lnocacheinfo
132
133         mov     \$7,%eax
134         xor     %ecx,%ecx
135         cpuid
136         mov     %ebx,8(%rdi)
137
138 .Lnocacheinfo:
139         mov     \$1,%eax
140         cpuid
141         and     \$0xbfefffff,%edx       # force reserved bits to 0
142         cmp     \$0,%r9d
143         jne     .Lnotintel
144         or      \$0x40000000,%edx       # set reserved bit#30 on Intel CPUs
145         and     \$15,%ah
146         cmp     \$15,%ah                # examine Family ID
147         jne     .Lnotintel
148         or      \$0x00100000,%edx       # set reserved bit#20 to engage RC4_CHAR
149 .Lnotintel:
150         bt      \$28,%edx               # test hyper-threading bit
151         jnc     .Lgeneric
152         and     \$0xefffffff,%edx       # ~(1<<28)
153         cmp     \$0,%r10d
154         je      .Lgeneric
155
156         or      \$0x10000000,%edx       # 1<<28
157         shr     \$16,%ebx
158         cmp     \$1,%bl                 # see if cache is shared
159         ja      .Lgeneric
160         and     \$0xefffffff,%edx       # ~(1<<28)
161 .Lgeneric:
162         and     \$0x00000800,%r9d       # isolate AMD XOP flag
163         and     \$0xfffff7ff,%ecx
164         or      %ecx,%r9d               # merge AMD XOP flag
165
166         mov     %edx,%r10d              # %r9d:%r10d is copy of %ecx:%edx
167         bt      \$27,%r9d               # check OSXSAVE bit
168         jnc     .Lclear_avx
169         xor     %ecx,%ecx               # XCR0
170         .byte   0x0f,0x01,0xd0          # xgetbv
171         and     \$6,%eax                # isolate XMM and YMM state support
172         cmp     \$6,%eax
173         je      .Ldone
174 .Lclear_avx:
175         mov     \$0xefffe7ff,%eax       # ~(1<<28|1<<12|1<<11)
176         and     %eax,%r9d               # clear AVX, FMA and AMD XOP bits
177         andl    \$0xffffffdf,8(%rdi)    # cleax AVX2, ~(1<<5)
178 .Ldone:
179         shl     \$32,%r9
180         mov     %r10d,%eax
181         mov     %r8,%rbx                # restore %rbx
182         or      %r9,%rax
183         ret
184 .size   OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid
185
186 .globl  OPENSSL_cleanse
187 .type   OPENSSL_cleanse,\@abi-omnipotent
188 .align  16
189 OPENSSL_cleanse:
190         xor     %rax,%rax
191         cmp     \$15,$arg2
192         jae     .Lot
193         cmp     \$0,$arg2
194         je      .Lret
195 .Little:
196         mov     %al,($arg1)
197         sub     \$1,$arg2
198         lea     1($arg1),$arg1
199         jnz     .Little
200 .Lret:
201         ret
202 .align  16
203 .Lot:
204         test    \$7,$arg1
205         jz      .Laligned
206         mov     %al,($arg1)
207         lea     -1($arg2),$arg2
208         lea     1($arg1),$arg1
209         jmp     .Lot
210 .Laligned:
211         mov     %rax,($arg1)
212         lea     -8($arg2),$arg2
213         test    \$-8,$arg2
214         lea     8($arg1),$arg1
215         jnz     .Laligned
216         cmp     \$0,$arg2
217         jne     .Little
218         ret
219 .size   OPENSSL_cleanse,.-OPENSSL_cleanse
220 ___
221
222 print<<___ if (!$win64);
223 .globl  OPENSSL_wipe_cpu
224 .type   OPENSSL_wipe_cpu,\@abi-omnipotent
225 .align  16
226 OPENSSL_wipe_cpu:
227         pxor    %xmm0,%xmm0
228         pxor    %xmm1,%xmm1
229         pxor    %xmm2,%xmm2
230         pxor    %xmm3,%xmm3
231         pxor    %xmm4,%xmm4
232         pxor    %xmm5,%xmm5
233         pxor    %xmm6,%xmm6
234         pxor    %xmm7,%xmm7
235         pxor    %xmm8,%xmm8
236         pxor    %xmm9,%xmm9
237         pxor    %xmm10,%xmm10
238         pxor    %xmm11,%xmm11
239         pxor    %xmm12,%xmm12
240         pxor    %xmm13,%xmm13
241         pxor    %xmm14,%xmm14
242         pxor    %xmm15,%xmm15
243         xorq    %rcx,%rcx
244         xorq    %rdx,%rdx
245         xorq    %rsi,%rsi
246         xorq    %rdi,%rdi
247         xorq    %r8,%r8
248         xorq    %r9,%r9
249         xorq    %r10,%r10
250         xorq    %r11,%r11
251         leaq    8(%rsp),%rax
252         ret
253 .size   OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
254 ___
255 print<<___ if ($win64);
256 .globl  OPENSSL_wipe_cpu
257 .type   OPENSSL_wipe_cpu,\@abi-omnipotent
258 .align  16
259 OPENSSL_wipe_cpu:
260         pxor    %xmm0,%xmm0
261         pxor    %xmm1,%xmm1
262         pxor    %xmm2,%xmm2
263         pxor    %xmm3,%xmm3
264         pxor    %xmm4,%xmm4
265         pxor    %xmm5,%xmm5
266         xorq    %rcx,%rcx
267         xorq    %rdx,%rdx
268         xorq    %r8,%r8
269         xorq    %r9,%r9
270         xorq    %r10,%r10
271         xorq    %r11,%r11
272         leaq    8(%rsp),%rax
273         ret
274 .size   OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
275 ___
276 {
277 my $out="%r10";
278 my $cnt="%rcx";
279 my $max="%r11";
280 my $lasttick="%r8d";
281 my $lastdiff="%r9d";
282 my $redzone=win64?8:-8;
283
284 print<<___;
285 .globl  OPENSSL_instrument_bus
286 .type   OPENSSL_instrument_bus,\@abi-omnipotent
287 .align  16
288 OPENSSL_instrument_bus:
289         mov     $arg1,$out      # tribute to Win64
290         mov     $arg2,$cnt
291         mov     $arg2,$max
292
293         rdtsc                   # collect 1st tick
294         mov     %eax,$lasttick  # lasttick = tick
295         mov     \$0,$lastdiff   # lastdiff = 0
296         clflush ($out)
297         .byte   0xf0            # lock
298         add     $lastdiff,($out)
299         jmp     .Loop
300 .align  16
301 .Loop:  rdtsc
302         mov     %eax,%edx
303         sub     $lasttick,%eax
304         mov     %edx,$lasttick
305         mov     %eax,$lastdiff
306         clflush ($out)
307         .byte   0xf0            # lock
308         add     %eax,($out)
309         lea     4($out),$out
310         sub     \$1,$cnt
311         jnz     .Loop
312
313         mov     $max,%rax
314         ret
315 .size   OPENSSL_instrument_bus,.-OPENSSL_instrument_bus
316
317 .globl  OPENSSL_instrument_bus2
318 .type   OPENSSL_instrument_bus2,\@abi-omnipotent
319 .align  16
320 OPENSSL_instrument_bus2:
321         mov     $arg1,$out      # tribute to Win64
322         mov     $arg2,$cnt
323         mov     $arg3,$max
324         mov     $cnt,$redzone(%rsp)
325
326         rdtsc                   # collect 1st tick
327         mov     %eax,$lasttick  # lasttick = tick
328         mov     \$0,$lastdiff   # lastdiff = 0
329
330         clflush ($out)
331         .byte   0xf0            # lock
332         add     $lastdiff,($out)
333
334         rdtsc                   # collect 1st diff
335         mov     %eax,%edx
336         sub     $lasttick,%eax  # diff
337         mov     %edx,$lasttick  # lasttick = tick
338         mov     %eax,$lastdiff  # lastdiff = diff
339 .Loop2:
340         clflush ($out)
341         .byte   0xf0            # lock
342         add     %eax,($out)     # accumulate diff
343
344         sub     \$1,$max
345         jz      .Ldone2
346
347         rdtsc
348         mov     %eax,%edx
349         sub     $lasttick,%eax  # diff
350         mov     %edx,$lasttick  # lasttick = tick
351         cmp     $lastdiff,%eax
352         mov     %eax,$lastdiff  # lastdiff = diff
353         mov     \$0,%edx
354         setne   %dl
355         sub     %rdx,$cnt       # conditional --$cnt
356         lea     ($out,%rdx,4),$out      # conditional ++$out
357         jnz     .Loop2
358
359 .Ldone2:
360         mov     $redzone(%rsp),%rax
361         sub     $cnt,%rax
362         ret
363 .size   OPENSSL_instrument_bus2,.-OPENSSL_instrument_bus2
364 ___
365 }
366
367 print<<___;
368 .globl  OPENSSL_ia32_rdrand
369 .type   OPENSSL_ia32_rdrand,\@abi-omnipotent
370 .align  16
371 OPENSSL_ia32_rdrand:
372         mov     \$8,%ecx
373 .Loop_rdrand:
374         rdrand  %rax
375         jc      .Lbreak_rdrand
376         loop    .Loop_rdrand
377 .Lbreak_rdrand:
378         cmp     \$0,%rax
379         cmove   %rcx,%rax
380         ret
381 .size   OPENSSL_ia32_rdrand,.-OPENSSL_ia32_rdrand
382
383 .globl  OPENSSL_ia32_rdseed
384 .type   OPENSSL_ia32_rdseed,\@abi-omnipotent
385 .align  16
386 OPENSSL_ia32_rdseed:
387         mov     \$8,%ecx
388 .Loop_rdseed:
389         rdseed  %rax
390         jc      .Lbreak_rdseed
391         loop    .Loop_rdseed
392 .Lbreak_rdseed:
393         cmp     \$0,%rax
394         cmove   %rcx,%rax
395         ret
396 .size   OPENSSL_ia32_rdseed,.-OPENSSL_ia32_rdseed
397 ___
398
399 close STDOUT;   # flush