sha256-586.pl: fix typos.
[openssl.git] / crypto / sha / asm / sha256-586.pl
1 #!/usr/bin/env perl
2 #
3 # ====================================================================
4 # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
5 # project. The module is, however, dual licensed under OpenSSL and
6 # CRYPTOGAMS licenses depending on where you obtain it. For further
7 # details see http://www.openssl.org/~appro/cryptogams/.
8 # ====================================================================
9 #
10 # SHA256 block transform for x86. September 2007.
11 #
12 # Performance improvement over compiler generated code varies from
13 # 10% to 40% [see below]. Not very impressive on some ยต-archs, but
14 # it's 5 times smaller and optimizies amount of writes.
15 #
16 # May 2012.
17 #
18 # Optimization including two of Pavel Semjanov's ideas, alternative
19 # Maj and full unroll, resulted in ~20-25% improvement on most CPUs,
20 # ~7% on Pentium, ~40% on Atom. As fully unrolled loop body is almost
21 # 15x larger, 8KB vs. 560B, it's fired only for longer inputs. But not
22 # on P4, where it kills performance, nor Sandy Bridge, where folded
23 # loop is approximately as fast...
24 #
25 # June 2012.
26 #
27 # Add AMD XOP-specific code path, >30% improvement on Bulldozer over
28 # May version, >60% over original. Add AVX+shrd code path, >25%
29 # improvement on Sandy Bridge over May version, 60% over original.
30 #
31 # Performance in clock cycles per processed byte (less is better):
32 #
33 #               PIII    P4      AMD K8  Core2   SB      Atom    Bldzr
34 # gcc           36      41      27      26      25      50      36
35 # icc           33      38      25      23      -       -       -
36 # x86 asm(*)    27/24   28      19/15.5 18/15.6 12.5    30/25   16.6
37 # x86_64 asm(**)        17.5    15.1    13.9    11.6    22      13.7
38 #
39 # (*)   numbers after slash are for unrolled loop, where available;
40 # (**)  x86_64 assembly performance is presented for reference
41 #       purposes.
42
43 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
44 push(@INC,"${dir}","${dir}../../perlasm");
45 require "x86asm.pl";
46
47 &asm_init($ARGV[0],"sha512-586.pl",$ARGV[$#ARGV] eq "386");
48
49 $xmm=$ymm=0;
50 for (@ARGV) { $xmm=1 if (/-DOPENSSL_IA32_SSE2/); }
51
52 $ymm=1 if ($xmm &&
53                 `$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
54                         =~ /GNU assembler version ([2-9]\.[0-9]+)/ &&
55                 $1>=2.19);      # first version supporting AVX
56
57 $ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32n" &&
58                 `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/ &&
59                 $1>=2.03);      # first version supporting AVX
60
61 $ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32" &&
62                 `ml 2>&1` =~ /Version ([0-9]+)\./ &&
63                 $1>=10);        # first version supporting AVX
64
65 $unroll_after = 64*4;   # If pre-evicted from L1P cache first spin of
66                         # fully unrolled loop was measured to run about
67                         # 3-4x slower. If slowdown coefficient is N and
68                         # unrolled loop is m times faster, then you break
69                         # even at (N-1)/(m-1) blocks. Then it needs to be
70                         # adjusted for probability of code being evicted,
71                         # code size/cache size=1/4. Typical m is 1.15...
72
73 $A="eax";
74 $E="edx";
75 $T="ebx";
76 $Aoff=&DWP(4,"esp");
77 $Boff=&DWP(8,"esp");
78 $Coff=&DWP(12,"esp");
79 $Doff=&DWP(16,"esp");
80 $Eoff=&DWP(20,"esp");
81 $Foff=&DWP(24,"esp");
82 $Goff=&DWP(28,"esp");
83 $Hoff=&DWP(32,"esp");
84 $Xoff=&DWP(36,"esp");
85 $K256="ebp";
86
87 sub BODY_16_63() {
88         &mov    ($T,"ecx");                     # "ecx" is preloaded
89          &mov   ("esi",&DWP(4*(9+15+16-14),"esp"));
90         &ror    ("ecx",18-7);
91          &mov   ("edi","esi");
92         &ror    ("esi",19-17);
93          &xor   ("ecx",$T);
94          &shr   ($T,3);
95         &ror    ("ecx",7);
96          &xor   ("esi","edi");
97          &xor   ($T,"ecx");                     # T = sigma0(X[-15])
98         &ror    ("esi",17);
99          &add   ($T,&DWP(4*(9+15+16),"esp"));   # T += X[-16]
100         &shr    ("edi",10);
101          &add   ($T,&DWP(4*(9+15+16-9),"esp")); # T += X[-7]
102         #&xor   ("edi","esi")                   # sigma1(X[-2])
103         # &add  ($T,"edi");                     # T += sigma1(X[-2])
104         # &mov  (&DWP(4*(9+15),"esp"),$T);      # save X[0]
105
106         &BODY_00_15(1);
107 }
108 sub BODY_00_15() {
109     my $in_16_63=shift;
110
111         &mov    ("ecx",$E);
112          &xor   ("edi","esi")                   if ($in_16_63); # sigma1(X[-2])
113          &mov   ("esi",$Foff);
114         &ror    ("ecx",25-11);
115          &add   ($T,"edi")                      if ($in_16_63); # T += sigma1(X[-2])
116          &mov   ("edi",$Goff);
117         &xor    ("ecx",$E);
118          &xor   ("esi","edi");
119          &mov   ($T,&DWP(4*(9+15),"esp"))       if (!$in_16_63);
120          &mov   (&DWP(4*(9+15),"esp"),$T)       if ($in_16_63); # save X[0]
121         &ror    ("ecx",11-6);
122          &and   ("esi",$E);
123          &mov   ($Eoff,$E);             # modulo-scheduled
124         &xor    ($E,"ecx");
125          &add   ($T,$Hoff);             # T += h
126          &xor   ("esi","edi");          # Ch(e,f,g)
127         &ror    ($E,6);                 # Sigma1(e)
128          &mov   ("ecx",$A);
129          &add   ($T,"esi");             # T += Ch(e,f,g)
130
131         &ror    ("ecx",22-13);
132          &add   ($T,$E);                # T += Sigma1(e)
133          &mov   ("edi",$Boff);
134         &xor    ("ecx",$A);
135          &mov   ($Aoff,$A);             # modulo-scheduled
136          &lea   ("esp",&DWP(-4,"esp"));
137         &ror    ("ecx",13-2);
138          &mov   ("esi",&DWP(0,$K256));
139         &xor    ("ecx",$A);
140          &mov   ($E,$Eoff);             # e in next iteration, d in this one
141          &xor   ($A,"edi");             # a ^= b
142         &ror    ("ecx",2);              # Sigma0(a)
143
144          &add   ($T,"esi");             # T+= K[i]
145          &mov   (&DWP(0,"esp"),$A);     # (b^c) in next round
146         &add    ($E,$T);                # d += T
147          &and   ($A,&DWP(4,"esp"));     # a &= (b^c)
148         &add    ($T,"ecx");             # T += Sigma0(a)
149          &xor   ($A,"edi");             # h = Maj(a,b,c) = Ch(a^b,c,b)
150          &mov   ("ecx",&DWP(4*(9+15+16-1),"esp"))       if ($in_16_63); # preload T
151         &add    ($K256,4);
152          &add   ($A,$T);                # h += T
153 }
154
155 &external_label("OPENSSL_ia32cap_P")            if (!$i386);
156
157 &function_begin("sha256_block_data_order");
158         &mov    ("esi",wparam(0));      # ctx
159         &mov    ("edi",wparam(1));      # inp
160         &mov    ("eax",wparam(2));      # num
161         &mov    ("ebx","esp");          # saved sp
162
163         &call   (&label("pic_point"));  # make it PIC!
164 &set_label("pic_point");
165         &blindpop($K256);
166         &lea    ($K256,&DWP(&label("K256")."-".&label("pic_point"),$K256));
167
168         &sub    ("esp",16);
169         &and    ("esp",-64);
170
171         &shl    ("eax",6);
172         &add    ("eax","edi");
173         &mov    (&DWP(0,"esp"),"esi");  # ctx
174         &mov    (&DWP(4,"esp"),"edi");  # inp
175         &mov    (&DWP(8,"esp"),"eax");  # inp+num*128
176         &mov    (&DWP(12,"esp"),"ebx"); # saved sp
177                                                 if (!$i386) {
178         &picmeup("edx","OPENSSL_ia32cap_P",$K256,&label("K256"));
179         &mov    ("ecx",&DWP(0,"edx"));
180         &mov    ("edx",&DWP(4,"edx"));
181         &test   ("ecx",1<<20);          # check for P4
182         &jnz    (&label("loop"));
183         &test   ("edx",1<<11);          # check for XOP
184         &jnz    (&label("XOP"))         if ($ymm);
185         &and    ("ecx",1<<30);          # mask "Intel CPU" bit
186         &and    ("edx",1<<28);          # mask AVX bit
187         &or     ("ecx","edx");
188         &cmp    ("ecx",1<<28|1<<30);
189         &je     (&label("AVX"))         if ($ymm);
190         &je     (&label("loop_shrd"))   if (!$ymm);
191                                                 if ($unroll_after) {
192         &sub    ("eax","edi");
193         &cmp    ("eax",$unroll_after);
194         &jae    (&label("unrolled"));
195                                                 } }
196         &jmp    (&label("loop"));
197
198 sub COMPACT_LOOP() {
199 my $suffix=shift;
200
201 &set_label("loop$suffix",16);
202     # copy input block to stack reversing byte and dword order
203     for($i=0;$i<4;$i++) {
204         &mov    ("eax",&DWP($i*16+0,"edi"));
205         &mov    ("ebx",&DWP($i*16+4,"edi"));
206         &mov    ("ecx",&DWP($i*16+8,"edi"));
207         &bswap  ("eax");
208         &mov    ("edx",&DWP($i*16+12,"edi"));
209         &bswap  ("ebx");
210         &push   ("eax");
211         &bswap  ("ecx");
212         &push   ("ebx");
213         &bswap  ("edx");
214         &push   ("ecx");
215         &push   ("edx");
216     }
217         &add    ("edi",64);
218         &lea    ("esp",&DWP(-4*9,"esp"));# place for A,B,C,D,E,F,G,H
219         &mov    (&DWP(4*(9+16)+4,"esp"),"edi");
220
221         # copy ctx->h[0-7] to A,B,C,D,E,F,G,H on stack
222         &mov    ($A,&DWP(0,"esi"));
223         &mov    ("ebx",&DWP(4,"esi"));
224         &mov    ("ecx",&DWP(8,"esi"));
225         &mov    ("edi",&DWP(12,"esi"));
226         # &mov  ($Aoff,$A);
227         &mov    ($Boff,"ebx");
228         &xor    ("ebx","ecx");
229         &mov    ($Coff,"ecx");
230         &mov    ($Doff,"edi");
231         &mov    (&DWP(0,"esp"),"ebx");  # magic
232         &mov    ($E,&DWP(16,"esi"));    
233         &mov    ("ebx",&DWP(20,"esi"));
234         &mov    ("ecx",&DWP(24,"esi"));
235         &mov    ("edi",&DWP(28,"esi"));
236         # &mov  ($Eoff,$E);
237         &mov    ($Foff,"ebx");
238         &mov    ($Goff,"ecx");
239         &mov    ($Hoff,"edi");
240
241 &set_label("00_15$suffix",16);
242
243         &BODY_00_15();
244
245         &cmp    ("esi",0xc19bf174);
246         &jne    (&label("00_15$suffix"));
247
248         &mov    ("ecx",&DWP(4*(9+15+16-1),"esp"));      # preloaded in BODY_00_15(1)
249         &jmp    (&label("16_63$suffix"));
250
251 &set_label("16_63$suffix",16);
252
253         &BODY_16_63();
254
255         &cmp    ("esi",0xc67178f2);
256         &jne    (&label("16_63$suffix"));
257
258         &mov    ("esi",&DWP(4*(9+16+64)+0,"esp"));#ctx
259         # &mov  ($A,$Aoff);
260         &mov    ("ebx",$Boff);
261         # &mov  ("edi",$Coff);
262         &mov    ("ecx",$Doff);
263         &add    ($A,&DWP(0,"esi"));
264         &add    ("ebx",&DWP(4,"esi"));
265         &add    ("edi",&DWP(8,"esi"));
266         &add    ("ecx",&DWP(12,"esi"));
267         &mov    (&DWP(0,"esi"),$A);
268         &mov    (&DWP(4,"esi"),"ebx");
269         &mov    (&DWP(8,"esi"),"edi");
270         &mov    (&DWP(12,"esi"),"ecx");
271         # &mov  ($E,$Eoff);
272         &mov    ("eax",$Foff);
273         &mov    ("ebx",$Goff);
274         &mov    ("ecx",$Hoff);
275         &mov    ("edi",&DWP(4*(9+16+64)+4,"esp"));#inp
276         &add    ($E,&DWP(16,"esi"));
277         &add    ("eax",&DWP(20,"esi"));
278         &add    ("ebx",&DWP(24,"esi"));
279         &add    ("ecx",&DWP(28,"esi"));
280         &mov    (&DWP(16,"esi"),$E);
281         &mov    (&DWP(20,"esi"),"eax");
282         &mov    (&DWP(24,"esi"),"ebx");
283         &mov    (&DWP(28,"esi"),"ecx");
284
285         &lea    ("esp",&DWP(4*(9+16+64),"esp"));# destroy frame
286         &sub    ($K256,4*64);                   # rewind K
287
288         &cmp    ("edi",&DWP(8,"esp"));          # are we done yet?
289         &jb     (&label("loop$suffix"));
290 }
291         &COMPACT_LOOP();
292         &mov    ("esp",&DWP(12,"esp"));         # restore sp
293 &function_end_A();
294                                                 if (!$i386 && !$ymm) {
295         # ~20% improvement on Sandy Bridge
296         local *ror = sub { &shrd(@_[0],@_) };
297         &COMPACT_LOOP("_shrd");
298         &mov    ("esp",&DWP(12,"esp"));         # restore sp
299 &function_end_A();
300                                                 }
301
302 &set_label("K256",64);  # Yes! I keep it in the code segment!
303 @K256=( 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,
304         0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5,
305         0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,
306         0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174,
307         0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,
308         0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da,
309         0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,
310         0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967,
311         0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,
312         0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85,
313         0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,
314         0xd192e819,0xd6990624,0xf40e3585,0x106aa070,
315         0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,
316         0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3,
317         0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,
318         0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2     );
319 &data_word(@K256);
320 &data_word(0x00010203,0x04050607,0x08090a0b,0x0c0d0e0f);
321
322 if (!$i386 && $unroll_after) {
323 my @AH=($A,$K256);
324
325 &set_label("unrolled",16);
326         &lea    ("esp",&DWP(-96,"esp"));
327         # copy ctx->h[0-7] to A,B,C,D,E,F,G,H on stack
328         &mov    ($AH[0],&DWP(0,"esi"));
329         &mov    ($AH[1],&DWP(4,"esi"));
330         &mov    ("ecx",&DWP(8,"esi"));
331         &mov    ("ebx",&DWP(12,"esi"));
332         #&mov   (&DWP(0,"esp"),$AH[0]);
333         &mov    (&DWP(4,"esp"),$AH[1]);
334         &xor    ($AH[1],"ecx");         # magic
335         &mov    (&DWP(8,"esp"),"ecx");
336         &mov    (&DWP(12,"esp"),"ebx");
337         &mov    ($E,&DWP(16,"esi"));    
338         &mov    ("ebx",&DWP(20,"esi"));
339         &mov    ("ecx",&DWP(24,"esi"));
340         &mov    ("esi",&DWP(28,"esi"));
341         #&mov   (&DWP(16,"esp"),$E);
342         &mov    (&DWP(20,"esp"),"ebx");
343         &mov    (&DWP(24,"esp"),"ecx");
344         &mov    (&DWP(28,"esp"),"esi");
345         &jmp    (&label("grand_loop"));
346
347 &set_label("grand_loop",16);
348     # copy input block to stack reversing byte order
349     for($i=0;$i<5;$i++) {
350         &mov    ("ebx",&DWP(12*$i+0,"edi"));
351         &mov    ("ecx",&DWP(12*$i+4,"edi"));
352         &bswap  ("ebx");
353         &mov    ("esi",&DWP(12*$i+8,"edi"));
354         &bswap  ("ecx");
355         &mov    (&DWP(32+12*$i+0,"esp"),"ebx");
356         &bswap  ("esi");
357         &mov    (&DWP(32+12*$i+4,"esp"),"ecx");
358         &mov    (&DWP(32+12*$i+8,"esp"),"esi");
359     }
360         &mov    ("ebx",&DWP($i*12,"edi"));
361         &add    ("edi",64);
362         &bswap  ("ebx");
363         &mov    (&DWP(96+4,"esp"),"edi");
364         &mov    (&DWP(32+12*$i,"esp"),"ebx");
365
366     my ($t1,$t2) = ("ecx","esi");
367     my ($a,$b,$c,$d,$e,$f,$g,$h)=(0..7);        # offsets
368     sub off { &DWP(4*(((shift)-$i)&7),"esp"); }
369
370     for ($i=0;$i<64;$i++) {
371
372       if ($i>=16) {
373         &mov    ($T,$t1);                       # $t1 is preloaded
374         # &mov  ($t2,&DWP(32+4*(($i+14)&15),"esp"));
375         &ror    ($t1,18-7);
376          &mov   ("edi",$t2);
377         &ror    ($t2,19-17);
378          &xor   ($t1,$T);
379          &shr   ($T,3);
380         &ror    ($t1,7);
381          &xor   ($t2,"edi");
382          &xor   ($T,$t1);                       # T = sigma0(X[-15])
383         &ror    ($t2,17);
384          &add   ($T,&DWP(32+4*($i&15),"esp"));  # T += X[-16]
385         &shr    ("edi",10);
386          &add   ($T,&DWP(32+4*(($i+9)&15),"esp"));      # T += X[-7]
387         #&xor   ("edi",$t2)                     # sigma1(X[-2])
388         # &add  ($T,"edi");                     # T += sigma1(X[-2])
389         # &mov  (&DWP(4*(9+15),"esp"),$T);      # save X[0]
390       }
391         &mov    ($t1,$E);
392          &xor   ("edi",$t2)                     if ($i>=16);    # sigma1(X[-2])
393          &mov   ($t2,&off($f));
394         &ror    ($E,25-11);
395          &add   ($T,"edi")                      if ($i>=16);    # T += sigma1(X[-2])
396          &mov   ("edi",&off($g));
397         &xor    ($E,$t1);
398          &mov   ($T,&DWP(32+4*($i&15),"esp"))   if ($i<16);     # X[i]
399          &mov   (&DWP(32+4*($i&15),"esp"),$T)   if ($i>=16 && $i<62);   # save X[0]
400          &xor   ($t2,"edi");
401         &ror    ($E,11-6);
402          &and   ($t2,$t1);
403          &mov   (&off($e),$t1);         # save $E, modulo-scheduled
404         &xor    ($E,$t1);
405          &add   ($T,&off($h));          # T += h
406          &xor   ("edi",$t2);            # Ch(e,f,g)
407         &ror    ($E,6);                 # Sigma1(e)
408          &mov   ($t1,$AH[0]);
409          &add   ($T,"edi");             # T += Ch(e,f,g)
410
411         &ror    ($t1,22-13);
412          &mov   ($t2,$AH[0]);
413          &mov   ("edi",&off($b));
414         &xor    ($t1,$AH[0]);
415          &mov   (&off($a),$AH[0]);      # save $A, modulo-scheduled
416          &xor   ($AH[0],"edi");         # a ^= b, (b^c) in next round
417         &ror    ($t1,13-2);
418          &and   ($AH[1],$AH[0]);        # (b^c) &= (a^b)
419          &lea   ($E,&DWP(@K256[$i],$T,$E));     # T += Sigma1(1)+K[i]
420         &xor    ($t1,$t2);
421          &xor   ($AH[1],"edi");         # h = Maj(a,b,c) = Ch(a^b,c,b)
422          &mov   ($t2,&DWP(32+4*(($i+2)&15),"esp"))      if ($i>=15 && $i<63);
423         &ror    ($t1,2);                # Sigma0(a)
424
425          &add   ($AH[1],$E);            # h += T
426          &add   ($E,&off($d));          # d += T
427         &add    ($AH[1],$t1);           # h += Sigma0(a)
428          &mov   ($t1,&DWP(32+4*(($i+15)&15),"esp"))     if ($i>=15 && $i<63);
429
430         @AH = reverse(@AH);             # rotate(a,h)
431         ($t1,$t2) = ($t2,$t1);          # rotate(t1,t2)
432     }
433         &mov    ("esi",&DWP(96,"esp")); #ctx
434                                         #&mov   ($AH[0],&DWP(0,"esp"));
435         &xor    ($AH[1],"edi");         #&mov   ($AH[1],&DWP(4,"esp"));
436                                         #&mov   ("edi", &DWP(8,"esp"));
437         &mov    ("ecx",&DWP(12,"esp"));
438         &add    ($AH[0],&DWP(0,"esi"));
439         &add    ($AH[1],&DWP(4,"esi"));
440         &add    ("edi",&DWP(8,"esi"));
441         &add    ("ecx",&DWP(12,"esi"));
442         &mov    (&DWP(0,"esi"),$AH[0]);
443         &mov    (&DWP(4,"esi"),$AH[1]);
444         &mov    (&DWP(8,"esi"),"edi");
445         &mov    (&DWP(12,"esi"),"ecx");
446          #&mov  (&DWP(0,"esp"),$AH[0]);
447          &mov   (&DWP(4,"esp"),$AH[1]);
448          &xor   ($AH[1],"edi");         # magic
449          &mov   (&DWP(8,"esp"),"edi");
450          &mov   (&DWP(12,"esp"),"ecx");
451         #&mov   ($E,&DWP(16,"esp"));
452         &mov    ("edi",&DWP(20,"esp"));
453         &mov    ("ebx",&DWP(24,"esp"));
454         &mov    ("ecx",&DWP(28,"esp"));
455         &add    ($E,&DWP(16,"esi"));
456         &add    ("edi",&DWP(20,"esi"));
457         &add    ("ebx",&DWP(24,"esi"));
458         &add    ("ecx",&DWP(28,"esi"));
459         &mov    (&DWP(16,"esi"),$E);
460         &mov    (&DWP(20,"esi"),"edi");
461         &mov    (&DWP(24,"esi"),"ebx");
462         &mov    (&DWP(28,"esi"),"ecx");
463          #&mov  (&DWP(16,"esp"),$E);
464          &mov   (&DWP(20,"esp"),"edi");
465         &mov    ("edi",&DWP(96+4,"esp"));       # inp
466          &mov   (&DWP(24,"esp"),"ebx");
467          &mov   (&DWP(28,"esp"),"ecx");
468
469         &cmp    ("edi",&DWP(96+8,"esp"));       # are we done yet?
470         &jb     (&label("grand_loop"));
471
472         &mov    ("esp",&DWP(96+12,"esp"));      # restore sp
473 &function_end_A();
474
475                                                 if ($ymm) {{{
476 my @X = map("xmm$_",(0..3));
477 my ($t0,$t1,$t2,$t3) = map("xmm$_",(4..7));
478 my @AH = ($A,$T);
479
480 &set_label("XOP",16);
481         &lea    ("esp",&DWP(-96,"esp"));
482         &vzeroall       ();
483         # copy ctx->h[0-7] to A,B,C,D,E,F,G,H on stack
484         &mov    ($AH[0],&DWP(0,"esi"));
485         &mov    ($AH[1],&DWP(4,"esi"));
486         &mov    ("ecx",&DWP(8,"esi"));
487         &mov    ("edi",&DWP(12,"esi"));
488         #&mov   (&DWP(0,"esp"),$AH[0]);
489         &mov    (&DWP(4,"esp"),$AH[1]);
490         &xor    ($AH[1],"ecx");                 # magic
491         &mov    (&DWP(8,"esp"),"ecx");
492         &mov    (&DWP(12,"esp"),"edi");
493         &mov    ($E,&DWP(16,"esi"));
494         &mov    ("edi",&DWP(20,"esi"));
495         &mov    ("ecx",&DWP(24,"esi"));
496         &mov    ("esi",&DWP(28,"esi"));
497         #&mov   (&DWP(16,"esp"),$E);
498         &mov    (&DWP(20,"esp"),"edi");
499         &mov    ("edi",&DWP(96+4,"esp"));       # inp
500         &mov    (&DWP(24,"esp"),"ecx");
501         &mov    (&DWP(28,"esp"),"esi");
502         &vmovdqa        ($t3,&QWP(256,$K256));
503         &jmp    (&label("grand_xop"));
504
505 &set_label("grand_xop",16);
506         # load input, reverse byte order, add K256[0..15], save to stack
507         &vmovdqu        (@X[0],&QWP(0,"edi"));
508         &vmovdqu        (@X[1],&QWP(16,"edi"));
509         &vmovdqu        (@X[2],&QWP(32,"edi"));
510         &vmovdqu        (@X[3],&QWP(48,"edi"));
511         &add            ("edi",64);
512         &vpshufb        (@X[0],@X[0],$t3);
513         &mov            (&DWP(96+4,"esp"),"edi");
514         &vpshufb        (@X[1],@X[1],$t3);
515         &vpshufb        (@X[2],@X[2],$t3);
516         &vpaddd         ($t0,@X[0],&QWP(0,$K256));
517         &vpshufb        (@X[3],@X[3],$t3);
518         &vpaddd         ($t1,@X[1],&QWP(16,$K256));
519         &vpaddd         ($t2,@X[2],&QWP(32,$K256));
520         &vpaddd         ($t3,@X[3],&QWP(48,$K256));
521         &vmovdqa        (&QWP(32+0,"esp"),$t0);
522         &vmovdqa        (&QWP(32+16,"esp"),$t1);
523         &vmovdqa        (&QWP(32+32,"esp"),$t2);
524         &vmovdqa        (&QWP(32+48,"esp"),$t3);
525         &jmp            (&label("xop_00_47"));
526
527 &set_label("xop_00_47",16);
528         &add            ($K256,64);
529
530 sub XOP_00_47 () {
531 my $j = shift;
532 my $body = shift;
533 my @X = @_;
534 my @insns = (&$body,&$body,&$body,&$body);      # 120 instructions
535
536         &vpalignr       ($t0,@X[1],@X[0],4);    # X[1..4]
537           eval(shift(@insns));
538           eval(shift(@insns));
539          &vpalignr      ($t3,@X[3],@X[2],4);    # X[9..12]
540           eval(shift(@insns));
541           eval(shift(@insns));
542         &vprotd         ($t1,$t0,14);
543           eval(shift(@insns));
544           eval(shift(@insns));
545         &vpsrld         ($t0,$t0,3);
546          &vpaddd        (@X[0],@X[0],$t3);      # X[0..3] += X[9..12]
547           eval(shift(@insns));
548           eval(shift(@insns));
549           eval(shift(@insns));
550           eval(shift(@insns));
551         &vprotd         ($t2,$t1,25-14);
552         &vpxor          ($t0,$t0,$t1);
553           eval(shift(@insns));
554           eval(shift(@insns));
555           eval(shift(@insns));
556           eval(shift(@insns));
557          &vprotd        ($t3,@X[3],13);
558         &vpxor          ($t0,$t0,$t2);          # sigma0(X[1..4])
559           eval(shift(@insns));
560           eval(shift(@insns));
561          &vpsrld        ($t2,@X[3],10);
562           eval(shift(@insns));
563           eval(shift(@insns));
564         &vpaddd         (@X[0],@X[0],$t0);      # X[0..3] += sigma0(X[1..4])
565           eval(shift(@insns));
566           eval(shift(@insns));
567          &vprotd        ($t1,$t3,15-13);
568          &vpxor         ($t3,$t3,$t2);
569           eval(shift(@insns));
570           eval(shift(@insns));
571           eval(shift(@insns));
572           eval(shift(@insns));
573          &vpxor         ($t3,$t3,$t1);          # sigma1(X[14..15])
574           eval(shift(@insns));
575           eval(shift(@insns));
576           eval(shift(@insns));
577           eval(shift(@insns));
578         &vpsrldq        ($t3,$t3,8);
579           eval(shift(@insns));
580           eval(shift(@insns));
581           eval(shift(@insns));
582           eval(shift(@insns));
583         &vpaddd         (@X[0],@X[0],$t3);      # X[0..1] += sigma1(X[14..15])
584           eval(shift(@insns));
585           eval(shift(@insns));
586           eval(shift(@insns));
587           eval(shift(@insns));
588          &vprotd        ($t3,@X[0],13);
589           eval(shift(@insns));
590           eval(shift(@insns));
591          &vpsrld        ($t2,@X[0],10);
592           eval(shift(@insns));
593           eval(shift(@insns));
594          &vprotd        ($t1,$t3,15-13);
595           eval(shift(@insns));
596           eval(shift(@insns));
597          &vpxor         ($t3,$t3,$t2);
598           eval(shift(@insns));
599           eval(shift(@insns));
600           eval(shift(@insns));
601           eval(shift(@insns));
602          &vpxor         ($t3,$t3,$t1);          # sigma1(X[16..17])
603           eval(shift(@insns));
604           eval(shift(@insns));
605           eval(shift(@insns));
606           eval(shift(@insns));
607         &vpslldq        ($t3,$t3,8);            # 22 instructions
608           eval(shift(@insns));
609           eval(shift(@insns));
610           eval(shift(@insns));
611           eval(shift(@insns));
612         &vpaddd         (@X[0],@X[0],$t3);      # X[2..3] += sigma1(X[16..17])
613           eval(shift(@insns));
614           eval(shift(@insns));
615           eval(shift(@insns));
616           eval(shift(@insns));
617         &vpaddd         ($t2,@X[0],&QWP(16*$j,$K256));
618
619         foreach (@insns) { eval; }              # remaining instructions
620
621         &vmovdqa        (&QWP(32+16*$j,"esp"),$t2);
622 }
623
624 sub body_00_15 () {
625         (
626         '&mov   ("ecx",$E);',
627          '&mov  ("esi",&off($f));',
628         '&ror   ($E,25-11);',
629          '&mov  ("edi",&off($g));',
630         '&xor   ($E,"ecx");',
631          '&xor  ("esi","edi");',
632         '&ror   ($E,11-6);',
633          '&and  ("esi","ecx");',
634          '&mov  (&off($e),"ecx");',     # save $E, modulo-scheduled
635         '&xor   ($E,"ecx");',
636          '&xor  ("edi","esi");',        # Ch(e,f,g)
637         '&ror   ($E,6);',               # T = Sigma1(e)
638          '&mov  ("ecx",$AH[0]);',
639         '&mov   ("esi",$AH[0]);',
640          '&add  ($E,&off($h));',        # T += h
641
642         '&ror   ("ecx",22-13);',
643          '&add  ($E,"edi");',           # T += Ch(e,f,g)
644          '&mov  ("edi",&off($b));',
645         '&xor   ("ecx",$AH[0]);',
646          '&mov  (&off($a),$AH[0]);',    # save $A, modulo-scheduled
647          '&xor  ($AH[0],"edi");',       # a ^= b, (b^c) in next round
648         '&ror   ("ecx",13-2);',
649          '&and  ($AH[1],$AH[0]);',      # (b^c) &= (a^b)
650          '&add  ($E,&DWP(32+4*($i&15),"esp"));',        # T += K[i]+X[i]
651         '&xor   ("ecx","esi");',
652          '&xor  ($AH[1],"edi");',       # h = Maj(a,b,c) = Ch(a^b,c,b)
653         '&ror   ("ecx",2);',            # Sigma0(a)
654
655          '&add  ($AH[1],$E);',          # h += T
656          '&add  ($E,&off($d));',        # d += T
657         '&add   ($AH[1],"ecx");'.       # h += Sigma0(a)
658
659         '@AH = reverse(@AH); $i++;'     # rotate(a,h)
660         );
661 }
662
663     for ($i=0,$j=0; $j<4; $j++) {
664         &XOP_00_47($j,\&body_00_15,@X);
665         push(@X,shift(@X));             # rotate(@X)
666     }
667         &cmp    (&DWP(16*$j,$K256),0x00010203);
668         &jne    (&label("xop_00_47"));
669
670     for ($i=0; $i<16; ) {
671         foreach(body_00_15()) { eval; }
672     }
673
674         &mov    ("esi",&DWP(96,"esp")); #ctx
675                                         #&mov   ($AH[0],&DWP(0,"esp"));
676         &xor    ($AH[1],"edi");         #&mov   ($AH[1],&DWP(4,"esp"));
677                                         #&mov   ("edi", &DWP(8,"esp"));
678         &mov    ("ecx",&DWP(12,"esp"));
679         &add    ($AH[0],&DWP(0,"esi"));
680         &add    ($AH[1],&DWP(4,"esi"));
681         &add    ("edi",&DWP(8,"esi"));
682         &add    ("ecx",&DWP(12,"esi"));
683         &mov    (&DWP(0,"esi"),$AH[0]);
684         &mov    (&DWP(4,"esi"),$AH[1]);
685         &mov    (&DWP(8,"esi"),"edi");
686         &mov    (&DWP(12,"esi"),"ecx");
687          #&mov  (&DWP(0,"esp"),$AH[0]);
688          &mov   (&DWP(4,"esp"),$AH[1]);
689          &xor   ($AH[1],"edi");                 # magic
690          &mov   (&DWP(8,"esp"),"edi");
691          &mov   (&DWP(12,"esp"),"ecx");
692         #&mov   ($E,&DWP(16,"esp"));
693         &mov    ("edi",&DWP(20,"esp"));
694         &mov    ("ecx",&DWP(24,"esp"));
695         &add    ($E,&DWP(16,"esi"));
696         &add    ("edi",&DWP(20,"esi"));
697         &add    ("ecx",&DWP(24,"esi"));
698         &mov    (&DWP(16,"esi"),$E);
699         &mov    (&DWP(20,"esi"),"edi");
700          &mov   (&DWP(20,"esp"),"edi");
701         &mov    ("edi",&DWP(28,"esp"));
702         &mov    (&DWP(24,"esi"),"ecx");
703          #&mov  (&DWP(16,"esp"),$E);
704         &add    ("edi",&DWP(28,"esi"));
705          &mov   (&DWP(24,"esp"),"ecx");
706         &mov    (&DWP(28,"esi"),"edi");
707          &mov   (&DWP(28,"esp"),"edi");
708         &mov    ("edi",&DWP(96+4,"esp"));       # inp
709
710         &vmovdqa        ($t3,&QWP(64,$K256));
711         &sub    ($K256,3*64);                   # rewind K
712         &cmp    ("edi",&DWP(96+8,"esp"));       # are we done yet?
713         &jb     (&label("grand_xop"));
714
715         &mov    ("esp",&DWP(96+12,"esp"));      # restore sp
716         &vzeroall       ();
717 &function_end_A();
718
719 &set_label("AVX",16);
720         &lea    ("esp",&DWP(-96,"esp"));
721         &vzeroall       ();
722         # copy ctx->h[0-7] to A,B,C,D,E,F,G,H on stack
723         &mov    ($AH[0],&DWP(0,"esi"));
724         &mov    ($AH[1],&DWP(4,"esi"));
725         &mov    ("ecx",&DWP(8,"esi"));
726         &mov    ("edi",&DWP(12,"esi"));
727         #&mov   (&DWP(0,"esp"),$AH[0]);
728         &mov    (&DWP(4,"esp"),$AH[1]);
729         &xor    ($AH[1],"ecx");                 # magic
730         &mov    (&DWP(8,"esp"),"ecx");
731         &mov    (&DWP(12,"esp"),"edi");
732         &mov    ($E,&DWP(16,"esi"));
733         &mov    ("edi",&DWP(20,"esi"));
734         &mov    ("ecx",&DWP(24,"esi"));
735         &mov    ("esi",&DWP(28,"esi"));
736         #&mov   (&DWP(16,"esp"),$E);
737         &mov    (&DWP(20,"esp"),"edi");
738         &mov    ("edi",&DWP(96+4,"esp"));       # inp
739         &mov    (&DWP(24,"esp"),"ecx");
740         &mov    (&DWP(28,"esp"),"esi");
741         &vmovdqa        ($t3,&QWP(256,$K256));
742         &jmp    (&label("grand_avx"));
743
744 &set_label("grand_avx",16);
745         # load input, reverse byte order, add K256[0..15], save to stack
746         &vmovdqu        (@X[0],&QWP(0,"edi"));
747         &vmovdqu        (@X[1],&QWP(16,"edi"));
748         &vmovdqu        (@X[2],&QWP(32,"edi"));
749         &vmovdqu        (@X[3],&QWP(48,"edi"));
750         &add            ("edi",64);
751         &vpshufb        (@X[0],@X[0],$t3);
752         &mov            (&DWP(96+4,"esp"),"edi");
753         &vpshufb        (@X[1],@X[1],$t3);
754         &vpshufb        (@X[2],@X[2],$t3);
755         &vpaddd         ($t0,@X[0],&QWP(0,$K256));
756         &vpshufb        (@X[3],@X[3],$t3);
757         &vpaddd         ($t1,@X[1],&QWP(16,$K256));
758         &vpaddd         ($t2,@X[2],&QWP(32,$K256));
759         &vpaddd         ($t3,@X[3],&QWP(48,$K256));
760         &vmovdqa        (&QWP(32+0,"esp"),$t0);
761         &vmovdqa        (&QWP(32+16,"esp"),$t1);
762         &vmovdqa        (&QWP(32+32,"esp"),$t2);
763         &vmovdqa        (&QWP(32+48,"esp"),$t3);
764         &jmp            (&label("avx_00_47"));
765
766 &set_label("avx_00_47",16);
767         &add            ($K256,64);
768
769 sub Xupdate_AVX () {
770         (
771         '&vpalignr      ($t0,@X[1],@X[0],4);',  # X[1..4]
772          '&vpalignr     ($t3,@X[3],@X[2],4);',  # X[9..12]
773         '&vpsrld        ($t2,$t0,7);',
774          '&vpaddd       (@X[0],@X[0],$t3);',    # X[0..3] += X[9..16]
775         '&vpsrld        ($t3,$t0,3);',
776         '&vpslld        ($t1,$t0,14);',
777         '&vpxor         ($t0,$t3,$t2);',
778         '&vpsrld        ($t2,$t2,18-7);',
779         '&vpxor         ($t0,$t0,$t1);',
780         '&vpslld        ($t1,$t1,25-14);',
781         '&vpxor         ($t0,$t0,$t2);',
782          '&vpsrld       ($t3,@X[3],10);',
783         '&vpxor         ($t0,$t0,$t1);',        # sigma0(X[1..4])
784          '&vpslld       ($t2,@X[3],13);',
785         '&vpaddd        (@X[0],@X[0],$t0);',    # X[0..3] += sigma0(X[1..4])
786          '&vpsrld       ($t1,@X[3],17);',
787          '&vpxor        ($t3,$t3,$t2);',
788          '&vpslld       ($t2,$t2,15-13);',
789          '&vpxor        ($t3,$t3,$t1);',
790          '&vpsrld       ($t1,$t1,19-17);',
791          '&vpxor        ($t3,$t3,$t2);',
792          '&vpxor        ($t3,$t3,$t1);',        # sigma1(X[14..15])
793         '&vpsrldq       ($t3,$t3,8);',
794         '&vpaddd        (@X[0],@X[0],$t3);',    # X[0..1] += sigma1(X[14..15])
795          '&vpsrld       ($t3,@X[0],10);',
796          '&vpslld       ($t2,@X[0],13);',
797          '&vpsrld       ($t1,@X[0],17);',
798          '&vpxor        ($t3,$t3,$t2);',
799          '&vpslld       ($t2,$t2,15-13);',
800          '&vpxor        ($t3,$t3,$t1);',
801          '&vpsrld       ($t1,$t1,19-17);',
802          '&vpxor        ($t3,$t3,$t2);',
803          '&vpxor        ($t3,$t3,$t1);',        # sigma1(X[16..17])
804         '&vpslldq       ($t3,$t3,8);',
805         '&vpaddd        (@X[0],@X[0],$t3);'     # X[2..3] += sigma1(X[16..17])
806         );
807 }
808
809 local *ror = sub { &shrd(@_[0],@_) };
810 sub AVX_00_47 () {
811 my $j = shift;
812 my $body = shift;
813 my @X = @_;
814 my @insns = (&$body,&$body,&$body,&$body);      # 120 instructions
815
816         foreach (Xupdate_AVX()) {               # 35 instructions
817             eval;
818             eval(shift(@insns));
819             eval(shift(@insns));
820             eval(shift(@insns));
821         }
822         &vpaddd         ($t2,@X[0],&QWP(16*$j,$K256));
823         foreach (@insns) { eval; }              # remaining instructions
824         &vmovdqa        (&QWP(32+16*$j,"esp"),$t2);
825 }
826
827     for ($i=0,$j=0; $j<4; $j++) {
828         &AVX_00_47($j,\&body_00_15,@X);
829         push(@X,shift(@X));             # rotate(@X)
830     }
831         &cmp    (&DWP(16*$j,$K256),0x00010203);
832         &jne    (&label("avx_00_47"));
833
834     for ($i=0; $i<16; ) {
835         foreach(body_00_15()) { eval; }
836     }
837
838         &mov    ("esi",&DWP(96,"esp")); #ctx
839                                         #&mov   ($AH[0],&DWP(0,"esp"));
840         &xor    ($AH[1],"edi");         #&mov   ($AH[1],&DWP(4,"esp"));
841                                         #&mov   ("edi", &DWP(8,"esp"));
842         &mov    ("ecx",&DWP(12,"esp"));
843         &add    ($AH[0],&DWP(0,"esi"));
844         &add    ($AH[1],&DWP(4,"esi"));
845         &add    ("edi",&DWP(8,"esi"));
846         &add    ("ecx",&DWP(12,"esi"));
847         &mov    (&DWP(0,"esi"),$AH[0]);
848         &mov    (&DWP(4,"esi"),$AH[1]);
849         &mov    (&DWP(8,"esi"),"edi");
850         &mov    (&DWP(12,"esi"),"ecx");
851          #&mov  (&DWP(0,"esp"),$AH[0]);
852          &mov   (&DWP(4,"esp"),$AH[1]);
853          &xor   ($AH[1],"edi");                 # magic
854          &mov   (&DWP(8,"esp"),"edi");
855          &mov   (&DWP(12,"esp"),"ecx");
856         #&mov   ($E,&DWP(16,"esp"));
857         &mov    ("edi",&DWP(20,"esp"));
858         &mov    ("ecx",&DWP(24,"esp"));
859         &add    ($E,&DWP(16,"esi"));
860         &add    ("edi",&DWP(20,"esi"));
861         &add    ("ecx",&DWP(24,"esi"));
862         &mov    (&DWP(16,"esi"),$E);
863         &mov    (&DWP(20,"esi"),"edi");
864          &mov   (&DWP(20,"esp"),"edi");
865         &mov    ("edi",&DWP(28,"esp"));
866         &mov    (&DWP(24,"esi"),"ecx");
867          #&mov  (&DWP(16,"esp"),$E);
868         &add    ("edi",&DWP(28,"esi"));
869          &mov   (&DWP(24,"esp"),"ecx");
870         &mov    (&DWP(28,"esi"),"edi");
871          &mov   (&DWP(28,"esp"),"edi");
872         &mov    ("edi",&DWP(96+4,"esp"));       # inp
873
874         &vmovdqa        ($t3,&QWP(64,$K256));
875         &sub    ($K256,3*64);                   # rewind K
876         &cmp    ("edi",&DWP(96+8,"esp"));       # are we done yet?
877         &jb     (&label("grand_avx"));
878
879         &mov    ("esp",&DWP(96+12,"esp"));      # restore sp
880         &vzeroall       ();
881 &function_end_A();
882                                                 }}}
883 }
884 &function_end_B("sha256_block_data_order");
885 &asciz("SHA256 block transform for x86, CRYPTOGAMS by <appro\@openssl.org>");
886
887 &asm_finish();