8cd88dbda2e62da327169eb6e539b474c6de08b9
[openssl.git] / crypto / sha / asm / sha512-mips.pl
1 #!/usr/bin/env perl
2
3 # ====================================================================
4 # Written by Andy Polyakov <appro@fy.chalmers.se> 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 # SHA2 block procedures for MIPS.
11
12 # October 2010.
13 #
14 # SHA256 performance improvement on MIPS R5000 CPU is ~27% over gcc-
15 # generated code in o32 build and ~55% in n32/64 build. SHA512 [which
16 # for now can only be compiled for MIPS64 ISA] improvement is modest
17 # ~17%, but it comes for free, because it's same instruction sequence.
18 # Improvement coefficients are for aligned input.
19
20 ######################################################################
21 # There is a number of MIPS ABI in use, O32 and N32/64 are most
22 # widely used. Then there is a new contender: NUBI. It appears that if
23 # one picks the latter, it's possible to arrange code in ABI neutral
24 # manner. Therefore let's stick to NUBI register layout:
25 #
26 ($zero,$at,$t0,$t1,$t2)=map("\$$_",(0..2,24,25));
27 ($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
28 ($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7,$s8,$s9,$s10,$s11)=map("\$$_",(12..23));
29 ($gp,$tp,$sp,$fp,$ra)=map("\$$_",(3,28..31));
30 #
31 # The return value is placed in $a0. Following coding rules facilitate
32 # interoperability:
33 #
34 # - never ever touch $tp, "thread pointer", former $gp [o32 can be
35 #   excluded from the rule, because it's specified volatile];
36 # - copy return value to $t0, former $v0 [or to $a0 if you're adapting
37 #   old code];
38 # - on O32 populate $a4-$a7 with 'lw $aN,4*N($sp)' if necessary;
39 #
40 # For reference here is register layout for N32/64 MIPS ABIs:
41 #
42 # ($zero,$at,$v0,$v1)=map("\$$_",(0..3));
43 # ($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
44 # ($t0,$t1,$t2,$t3,$t8,$t9)=map("\$$_",(12..15,24,25));
45 # ($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7)=map("\$$_",(16..23));
46 # ($gp,$sp,$fp,$ra)=map("\$$_",(28..31));
47 #
48 $flavour = shift; # supported flavours are o32,n32,64,nubi32,nubi64
49
50 if ($flavour =~ /64|n32/i) {
51         $PTR_ADD="dadd";        # incidentally works even on n32
52         $PTR_SUB="dsub";        # incidentally works even on n32
53         $REG_S="sd";
54         $REG_L="ld";
55         $PTR_SLL="dsll";        # incidentally works even on n32
56         $SZREG=8;
57 } else {
58         $PTR_ADD="add";
59         $PTR_SUB="sub";
60         $REG_S="sw";
61         $REG_L="lw";
62         $PTR_SLL="sll";
63         $SZREG=4;
64 }
65 $pf = ($flavour =~ /nubi/i) ? $t0 : $t2;
66 #
67 # <appro@openssl.org>
68 #
69 ######################################################################
70
71 for (@ARGV) {   $big_endian=1 if (/\-DB_ENDIAN/);
72                 $big_endian=0 if (/\-DL_ENDIAN/);
73                 $output=$_ if (/^\w[\w\-]*\.\w+$/);     }
74 open STDOUT,">$output";
75
76 if (!defined($big_endian)) { $big_endian=(unpack('L',pack('N',1))==1); }
77
78 if ($output =~ /512/) {
79         $label="512";
80         $SZ=8;
81         $LD="ld";               # load from memory
82         $ST="sd";               # store to memory
83         $SLL="dsll";            # shift left logical
84         $SRL="dsrl";            # shift right logical
85         $ADDU="daddu";
86         @Sigma0=(28,34,39);
87         @Sigma1=(14,18,41);
88         @sigma0=( 7, 1, 8);     # right shift first
89         @sigma1=( 6,19,61);     # right shift first
90         $lastK=0x817;
91         $rounds=80;
92 } else {
93         $label="256";
94         $SZ=4;
95         $LD="lw";               # load from memory
96         $ST="sw";               # store to memory
97         $SLL="sll";             # shift left logical
98         $SRL="srl";             # shift right logical
99         $ADDU="addu";
100         @Sigma0=( 2,13,22);
101         @Sigma1=( 6,11,25);
102         @sigma0=( 3, 7,18);     # right shift first
103         @sigma1=(10,17,19);     # right shift first
104         $lastK=0x8f2;
105         $rounds=64;
106 }
107
108 $MSB = $big_endian ? 0 : ($SZ-1);
109 $LSB = ($SZ-1)&~$MSB;
110
111 @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("\$$_",(1,2,3,7,24,25,30,31));
112 @X=map("\$$_",(8..23));
113
114 $ctx=$a0;
115 $inp=$a1;
116 $len=$a2;       $Ktbl=$len;
117
118 sub BODY_00_15 {
119 my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
120 my ($T1,$tmp0,$tmp1,$tmp2)=(@X[4],@X[5],@X[6],@X[7]);
121
122 $code.=<<___ if ($i<15);
123         ${LD}l  @X[1],`($i+1)*$SZ+$MSB`($inp)
124         ${LD}r  @X[1],`($i+1)*$SZ+$LSB`($inp)
125 ___
126 $code.=<<___    if (!$big_endian && $i<16 && $SZ==4);
127         srl     $tmp0,@X[0],24          # byte swap($i)
128         srl     $tmp1,@X[0],8
129         andi    $tmp2,@X[0],0xFF00
130         sll     @X[0],@X[0],24
131         andi    $tmp1,0xFF00
132         sll     $tmp2,$tmp2,8
133         or      @X[0],$tmp0
134         or      $tmp1,$tmp2
135         or      @X[0],$tmp1
136 ___
137 $code.=<<___    if (!$big_endian && $i<16 && $SZ==8);
138         ori     $tmp0,$zero,0xFF
139         dsll    $tmp2,$tmp0,32
140         or      $tmp0,$tmp2             # 0x000000FF000000FF
141         and     $tmp1,@X[0],$tmp0       # byte swap($i)
142         dsrl    $tmp2,@X[0],24
143         dsll    $tmp1,24
144         and     $tmp2,$tmp0
145         dsll    $tmp0,8                 # 0x0000FF000000FF00
146         or      $tmp1,$tmp2
147         and     $tmp2,@X[0],$tmp0
148         dsrl    @X[0],8
149         dsll    $tmp2,8
150         and     @X[0],$tmp0
151         or      $tmp1,$tmp2
152         or      @X[0],$tmp1
153         dsrl    $tmp1,@X[0],32
154         dsll    @X[0],32
155         or      @X[0],$tmp1
156 ___
157 $code.=<<___;
158         $ADDU   $T1,$X[0],$h                    # $i
159         $SRL    $h,$e,@Sigma1[0]
160         xor     $tmp2,$f,$g
161         $SLL    $tmp1,$e,`$SZ*8-@Sigma1[2]`
162         and     $tmp2,$e
163         $SRL    $tmp0,$e,@Sigma1[1]
164         xor     $h,$tmp1
165         $SLL    $tmp1,$e,`$SZ*8-@Sigma1[1]`
166         xor     $h,$tmp0
167         $SRL    $tmp0,$e,@Sigma1[2]
168         xor     $h,$tmp1
169         $SLL    $tmp1,$e,`$SZ*8-@Sigma1[0]`
170         xor     $h,$tmp0
171         xor     $tmp2,$g                        # Ch(e,f,g)
172         xor     $tmp0,$tmp1,$h                  # Sigma1(e)
173
174         $SRL    $h,$a,@Sigma0[0]
175         $ADDU   $T1,$tmp2
176         $LD     $tmp2,`$i*$SZ`($Ktbl)           # K[$i]
177         $SLL    $tmp1,$a,`$SZ*8-@Sigma0[2]`
178         $ADDU   $T1,$tmp0
179         $SRL    $tmp0,$a,@Sigma0[1]
180         xor     $h,$tmp1
181         $SLL    $tmp1,$a,`$SZ*8-@Sigma0[1]`
182         xor     $h,$tmp0
183         $SRL    $tmp0,$a,@Sigma0[2]
184         xor     $h,$tmp1
185         $SLL    $tmp1,$a,`$SZ*8-@Sigma0[0]`
186         xor     $h,$tmp0
187         $ST     @X[0],`($i%16)*$SZ`($sp)        # offload to ring buffer
188         xor     $h,$tmp1                        # Sigma0(a)
189
190         or      $tmp0,$a,$b
191         and     $tmp1,$a,$b
192         and     $tmp0,$c
193         or      $tmp1,$tmp0                     # Maj(a,b,c)
194         $ADDU   $T1,$tmp2                       # +=K[$i]
195         $ADDU   $h,$tmp1
196
197         $ADDU   $d,$T1
198         $ADDU   $h,$T1
199 ___
200 $code.=<<___ if ($i>=13);
201         $LD     @X[3],`(($i+3)%16)*$SZ`($sp)    # prefetch from ring buffer
202 ___
203 }
204
205 sub BODY_16_XX {
206 my $i=@_[0];
207 my ($tmp0,$tmp1,$tmp2,$tmp3)=(@X[4],@X[5],@X[6],@X[7]);
208
209 $code.=<<___;
210         $SRL    $tmp2,@X[1],@sigma0[0]          # Xupdate($i)
211         $ADDU   @X[0],@X[9]                     # +=X[i+9]
212         $SLL    $tmp1,@X[1],`$SZ*8-@sigma0[2]`
213         $SRL    $tmp0,@X[1],@sigma0[1]
214         xor     $tmp2,$tmp1
215         $SLL    $tmp1,`@sigma0[2]-@sigma0[1]`
216         xor     $tmp2,$tmp0
217         $SRL    $tmp0,@X[1],@sigma0[2]
218         xor     $tmp2,$tmp1
219
220         $SRL    $tmp3,@X[14],@sigma1[0]
221         xor     $tmp2,$tmp0                     # sigma0(X[i+1])
222         $SLL    $tmp1,@X[14],`$SZ*8-@sigma1[2]`
223         $ADDU   @X[0],$tmp2
224         $SRL    $tmp0,@X[14],@sigma1[1]
225         xor     $tmp3,$tmp1
226         $SLL    $tmp1,`@sigma1[2]-@sigma1[1]`
227         xor     $tmp3,$tmp0
228         $SRL    $tmp0,@X[14],@sigma1[2]
229         xor     $tmp3,$tmp1
230
231         xor     $tmp3,$tmp0                     # sigma1(X[i+14])
232         $ADDU   @X[0],$tmp3
233 ___
234         &BODY_00_15(@_);
235 }
236
237 $FRAMESIZE=16*$SZ+16*$SZREG;
238 $SAVED_REGS_MASK = ($flavour =~ /nubi/i) ? 0xc0fff008 : 0xc0ff0000;
239
240 $code.=<<___;
241 .text
242 .set    noat
243 .option pic2
244
245 .align  5
246 .globl  sha${label}_block_data_order
247 .ent    sha${label}_block_data_order
248 sha${label}_block_data_order:
249         .frame  $sp,$FRAMESIZE,$ra
250         .mask   $SAVED_REGS_MASK,-$SZREG
251         .set    noreorder
252 ___
253 $code.=<<___ if ($flavour =~ /o32/i);   # o32 PIC-ification
254         .cpload $pf
255 ___
256 $code.=<<___;
257         $PTR_SUB $sp,$FRAMESIZE
258         $REG_S  $ra,$FRAMESIZE-1*$SZREG($sp)
259         $REG_S  $fp,$FRAMESIZE-2*$SZREG($sp)
260         $REG_S  $s11,$FRAMESIZE-3*$SZREG($sp)
261         $REG_S  $s10,$FRAMESIZE-4*$SZREG($sp)
262         $REG_S  $s9,$FRAMESIZE-5*$SZREG($sp)
263         $REG_S  $s8,$FRAMESIZE-6*$SZREG($sp)
264         $REG_S  $s7,$FRAMESIZE-7*$SZREG($sp)
265         $REG_S  $s6,$FRAMESIZE-8*$SZREG($sp)
266         $REG_S  $s5,$FRAMESIZE-9*$SZREG($sp)
267         $REG_S  $s4,$FRAMESIZE-10*$SZREG($sp)
268 ___
269 $code.=<<___ if ($flavour =~ /nubi/i);  # optimize non-nubi prologue
270         $REG_S  $s3,$FRAMESIZE-11*$SZREG($sp)
271         $REG_S  $s2,$FRAMESIZE-12*$SZREG($sp)
272         $REG_S  $s1,$FRAMESIZE-13*$SZREG($sp)
273         $REG_S  $s0,$FRAMESIZE-14*$SZREG($sp)
274         $REG_S  $gp,$FRAMESIZE-15*$SZREG($sp)
275 ___
276 $code.=<<___;
277         $PTR_SLL @X[15],$len,`log(16*$SZ)/log(2)`
278 ___
279 $code.=<<___ if ($flavour !~ /o32/i);   # non-o32 PIC-ification
280         .cplocal        $Ktbl
281         .cpsetup        $pf,$zero,sha${label}_block_data_order
282 ___
283 $code.=<<___;
284         .set    reorder
285         la      $Ktbl,K${label}         # PIC-ified 'load address'
286
287         $LD     $A,0*$SZ($ctx)          # load context
288         $LD     $B,1*$SZ($ctx)
289         $LD     $C,2*$SZ($ctx)
290         $LD     $D,3*$SZ($ctx)
291         $LD     $E,4*$SZ($ctx)
292         $LD     $F,5*$SZ($ctx)
293         $LD     $G,6*$SZ($ctx)
294         $LD     $H,7*$SZ($ctx)
295
296         $PTR_ADD @X[15],$inp            # pointer to the end of input
297         $REG_S  @X[15],16*$SZ($sp)
298         b       .Loop
299
300 .align  5
301 .Loop:
302         ${LD}l  @X[0],$MSB($inp)
303         ${LD}r  @X[0],$LSB($inp)
304 ___
305 for ($i=0;$i<16;$i++)
306 { &BODY_00_15($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
307 $code.=<<___;
308         b       .L16_xx
309 .align  4
310 .L16_xx:
311 ___
312 for (;$i<32;$i++)
313 { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
314 $code.=<<___;
315         and     @X[6],0xfff
316         li      @X[7],$lastK
317         $PTR_ADD $Ktbl,16*$SZ           # Ktbl+=16
318         bne     @X[6],@X[7],.L16_xx
319
320         $LD     @X[0],0*$SZ($ctx)
321         $LD     @X[1],1*$SZ($ctx)
322         $LD     @X[2],2*$SZ($ctx)
323         $LD     @X[3],3*$SZ($ctx)
324         $ADDU   $A,@X[0]
325         $LD     @X[4],4*$SZ($ctx)
326         $ADDU   $B,@X[1]
327         $LD     @X[5],5*$SZ($ctx)
328         $ADDU   $C,@X[2]
329         $LD     @X[6],6*$SZ($ctx)
330         $ADDU   $D,@X[3]
331         $LD     @X[7],7*$SZ($ctx)
332         $ADDU   $E,@X[4]
333         $ST     $A,0*$SZ($ctx)
334         $ADDU   $F,@X[5]
335         $ST     $B,1*$SZ($ctx)
336         $ADDU   $G,@X[6]
337         $ST     $C,2*$SZ($ctx)
338         $ADDU   $H,@X[7]
339         $ST     $D,3*$SZ($ctx)
340         $PTR_ADD $inp,16*$SZ
341         $ST     $E,4*$SZ($ctx)
342         $REG_L  @X[15],16*$SZ($sp)      # restore pointer to the end of input
343         $ST     $F,5*$SZ($ctx)
344         $ST     $G,6*$SZ($ctx)
345         $ST     $H,7*$SZ($ctx)
346
347         $PTR_SUB $Ktbl,`($rounds-16)*$SZ`       # rewind $Ktbl
348         bne     $inp,@X[15],.Loop
349
350         .set    noreorder
351         $REG_L  $ra,$FRAMESIZE-1*$SZREG($sp)
352         $REG_L  $fp,$FRAMESIZE-2*$SZREG($sp)
353         $REG_L  $s11,$FRAMESIZE-3*$SZREG($sp)
354         $REG_L  $s10,$FRAMESIZE-4*$SZREG($sp)
355         $REG_L  $s9,$FRAMESIZE-5*$SZREG($sp)
356         $REG_L  $s8,$FRAMESIZE-6*$SZREG($sp)
357         $REG_L  $s7,$FRAMESIZE-7*$SZREG($sp)
358         $REG_L  $s6,$FRAMESIZE-8*$SZREG($sp)
359         $REG_L  $s5,$FRAMESIZE-9*$SZREG($sp)
360         $REG_L  $s4,$FRAMESIZE-10*$SZREG($sp)
361 ___
362 $code.=<<___ if ($flavour =~ /nubi/i);
363         $REG_L  $s3,$FRAMESIZE-11*$SZREG($sp)
364         $REG_L  $s2,$FRAMESIZE-12*$SZREG($sp)
365         $REG_L  $s1,$FRAMESIZE-13*$SZREG($sp)
366         $REG_L  $s0,$FRAMESIZE-14*$SZREG($sp)
367         $REG_L  $gp,$FRAMESIZE-15*$SZREG($sp)
368 ___
369 $code.=<<___;
370         jr      $ra
371         $PTR_ADD $sp,$FRAMESIZE
372 .end    sha${label}_block_data_order
373
374 .rdata
375 .align  5
376 K${label}:
377 ___
378 if ($SZ==4) {
379 $code.=<<___;
380         .word   0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
381         .word   0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
382         .word   0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3
383         .word   0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
384         .word   0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc
385         .word   0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
386         .word   0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7
387         .word   0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
388         .word   0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13
389         .word   0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
390         .word   0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3
391         .word   0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
392         .word   0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5
393         .word   0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
394         .word   0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208
395         .word   0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
396 ___
397 } else {
398 $code.=<<___;
399         .dword  0x428a2f98d728ae22, 0x7137449123ef65cd
400         .dword  0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc
401         .dword  0x3956c25bf348b538, 0x59f111f1b605d019
402         .dword  0x923f82a4af194f9b, 0xab1c5ed5da6d8118
403         .dword  0xd807aa98a3030242, 0x12835b0145706fbe
404         .dword  0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2
405         .dword  0x72be5d74f27b896f, 0x80deb1fe3b1696b1
406         .dword  0x9bdc06a725c71235, 0xc19bf174cf692694
407         .dword  0xe49b69c19ef14ad2, 0xefbe4786384f25e3
408         .dword  0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65
409         .dword  0x2de92c6f592b0275, 0x4a7484aa6ea6e483
410         .dword  0x5cb0a9dcbd41fbd4, 0x76f988da831153b5
411         .dword  0x983e5152ee66dfab, 0xa831c66d2db43210
412         .dword  0xb00327c898fb213f, 0xbf597fc7beef0ee4
413         .dword  0xc6e00bf33da88fc2, 0xd5a79147930aa725
414         .dword  0x06ca6351e003826f, 0x142929670a0e6e70
415         .dword  0x27b70a8546d22ffc, 0x2e1b21385c26c926
416         .dword  0x4d2c6dfc5ac42aed, 0x53380d139d95b3df
417         .dword  0x650a73548baf63de, 0x766a0abb3c77b2a8
418         .dword  0x81c2c92e47edaee6, 0x92722c851482353b
419         .dword  0xa2bfe8a14cf10364, 0xa81a664bbc423001
420         .dword  0xc24b8b70d0f89791, 0xc76c51a30654be30
421         .dword  0xd192e819d6ef5218, 0xd69906245565a910
422         .dword  0xf40e35855771202a, 0x106aa07032bbd1b8
423         .dword  0x19a4c116b8d2d0c8, 0x1e376c085141ab53
424         .dword  0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8
425         .dword  0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb
426         .dword  0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3
427         .dword  0x748f82ee5defb2fc, 0x78a5636f43172f60
428         .dword  0x84c87814a1f0ab72, 0x8cc702081a6439ec
429         .dword  0x90befffa23631e28, 0xa4506cebde82bde9
430         .dword  0xbef9a3f7b2c67915, 0xc67178f2e372532b
431         .dword  0xca273eceea26619c, 0xd186b8c721c0c207
432         .dword  0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178
433         .dword  0x06f067aa72176fba, 0x0a637dc5a2c898a6
434         .dword  0x113f9804bef90dae, 0x1b710b35131c471b
435         .dword  0x28db77f523047d84, 0x32caab7b40c72493
436         .dword  0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c
437         .dword  0x4cc5d4becb3e42b6, 0x597f299cfc657e2a
438         .dword  0x5fcb6fab3ad6faec, 0x6c44198c4a475817
439 ___
440 }
441 $code.=<<___;
442 .asciiz "SHA${label} for MIPS, CRYPTOGAMS by <appro\@openssl.org>"
443 .align  5
444
445 ___
446
447 $code =~ s/\`([^\`]*)\`/eval $1/gem;
448 print $code;
449 close STDOUT;