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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$flavour = shift; # supported flavours are o32,n32,64,nubi32,nubi64
49
50if ($flavour =~ /64/i) {
51 $LA="dla";
52} else {
53 $LA="la";
54}
55
56if ($flavour =~ /64|n32/i) {
57 $PTR_ADD="dadd"; # incidentally works even on n32
58 $PTR_SUB="dsub"; # incidentally works even on n32
59 $REG_S="sd";
60 $REG_L="ld";
61 $PTR_SLL="dsll"; # incidentally works even on n32
62 $SZREG=8;
63} else {
64 $PTR_ADD="add";
65 $PTR_SUB="sub";
66 $REG_S="sw";
67 $REG_L="lw";
68 $PTR_SLL="sll";
69 $SZREG=4;
70}
71$pf = ($flavour =~ /nubi/i) ? $t0 : $t2;
72#
73# <appro@openssl.org>
74#
75######################################################################
76
77$big_endian=(`echo MIPSEL | $ENV{CC} -E -P -`=~/MIPSEL/)?1:0;
78
79for (@ARGV) { $output=$_ if (/^\w[\w\-]*\.\w+$/); }
80open STDOUT,">$output";
81
82if (!defined($big_endian)) { $big_endian=(unpack('L',pack('N',1))==1); }
83
84if ($output =~ /512/) {
85 $label="512";
86 $SZ=8;
87 $LD="ld"; # load from memory
88 $ST="sd"; # store to memory
89 $SLL="dsll"; # shift left logical
90 $SRL="dsrl"; # shift right logical
91 $ADDU="daddu";
92 @Sigma0=(28,34,39);
93 @Sigma1=(14,18,41);
94 @sigma0=( 7, 1, 8); # right shift first
95 @sigma1=( 6,19,61); # right shift first
96 $lastK=0x817;
97 $rounds=80;
98} else {
99 $label="256";
100 $SZ=4;
101 $LD="lw"; # load from memory
102 $ST="sw"; # store to memory
103 $SLL="sll"; # shift left logical
104 $SRL="srl"; # shift right logical
105 $ADDU="addu";
106 @Sigma0=( 2,13,22);
107 @Sigma1=( 6,11,25);
108 @sigma0=( 3, 7,18); # right shift first
109 @sigma1=(10,17,19); # right shift first
110 $lastK=0x8f2;
111 $rounds=64;
112}
113
114$MSB = $big_endian ? 0 : ($SZ-1);
115$LSB = ($SZ-1)&~$MSB;
116
117@V=($A,$B,$C,$D,$E,$F,$G,$H)=map("\$$_",(1,2,3,7,24,25,30,31));
118@X=map("\$$_",(8..23));
119
120$ctx=$a0;
121$inp=$a1;
122$len=$a2; $Ktbl=$len;
123
124sub BODY_00_15 {
125my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
126my ($T1,$tmp0,$tmp1,$tmp2)=(@X[4],@X[5],@X[6],@X[7]);
127
128$code.=<<___ if ($i<15);
129 ${LD}l @X[1],`($i+1)*$SZ+$MSB`($inp)
130 ${LD}r @X[1],`($i+1)*$SZ+$LSB`($inp)
131___
132$code.=<<___ if (!$big_endian && $i<16 && $SZ==4);
133 srl $tmp0,@X[0],24 # byte swap($i)
134 srl $tmp1,@X[0],8
135 andi $tmp2,@X[0],0xFF00
136 sll @X[0],@X[0],24
137 andi $tmp1,0xFF00
138 sll $tmp2,$tmp2,8
139 or @X[0],$tmp0
140 or $tmp1,$tmp2
141 or @X[0],$tmp1
142___
143$code.=<<___ if (!$big_endian && $i<16 && $SZ==8);
144 ori $tmp0,$zero,0xFF
145 dsll $tmp2,$tmp0,32
146 or $tmp0,$tmp2 # 0x000000FF000000FF
147 and $tmp1,@X[0],$tmp0 # byte swap($i)
148 dsrl $tmp2,@X[0],24
149 dsll $tmp1,24
150 and $tmp2,$tmp0
151 dsll $tmp0,8 # 0x0000FF000000FF00
152 or $tmp1,$tmp2
153 and $tmp2,@X[0],$tmp0
154 dsrl @X[0],8
155 dsll $tmp2,8
156 and @X[0],$tmp0
157 or $tmp1,$tmp2
158 or @X[0],$tmp1
159 dsrl $tmp1,@X[0],32
160 dsll @X[0],32
161 or @X[0],$tmp1
162___
163$code.=<<___;
164 $ADDU $T1,$X[0],$h # $i
165 $SRL $h,$e,@Sigma1[0]
166 xor $tmp2,$f,$g
167 $SLL $tmp1,$e,`$SZ*8-@Sigma1[2]`
168 and $tmp2,$e
169 $SRL $tmp0,$e,@Sigma1[1]
170 xor $h,$tmp1
171 $SLL $tmp1,$e,`$SZ*8-@Sigma1[1]`
172 xor $h,$tmp0
173 $SRL $tmp0,$e,@Sigma1[2]
174 xor $h,$tmp1
175 $SLL $tmp1,$e,`$SZ*8-@Sigma1[0]`
176 xor $h,$tmp0
177 xor $tmp2,$g # Ch(e,f,g)
178 xor $tmp0,$tmp1,$h # Sigma1(e)
179
180 $SRL $h,$a,@Sigma0[0]
181 $ADDU $T1,$tmp2
182 $LD $tmp2,`$i*$SZ`($Ktbl) # K[$i]
183 $SLL $tmp1,$a,`$SZ*8-@Sigma0[2]`
184 $ADDU $T1,$tmp0
185 $SRL $tmp0,$a,@Sigma0[1]
186 xor $h,$tmp1
187 $SLL $tmp1,$a,`$SZ*8-@Sigma0[1]`
188 xor $h,$tmp0
189 $SRL $tmp0,$a,@Sigma0[2]
190 xor $h,$tmp1
191 $SLL $tmp1,$a,`$SZ*8-@Sigma0[0]`
192 xor $h,$tmp0
193 $ST @X[0],`($i%16)*$SZ`($sp) # offload to ring buffer
194 xor $h,$tmp1 # Sigma0(a)
195
196 or $tmp0,$a,$b
197 and $tmp1,$a,$b
198 and $tmp0,$c
199 or $tmp1,$tmp0 # Maj(a,b,c)
200 $ADDU $T1,$tmp2 # +=K[$i]
201 $ADDU $h,$tmp1
202
203 $ADDU $d,$T1
204 $ADDU $h,$T1
205___
206$code.=<<___ if ($i>=13);
207 $LD @X[3],`(($i+3)%16)*$SZ`($sp) # prefetch from ring buffer
208___
209}
210
211sub BODY_16_XX {
212my $i=@_[0];
213my ($tmp0,$tmp1,$tmp2,$tmp3)=(@X[4],@X[5],@X[6],@X[7]);
214
215$code.=<<___;
216 $SRL $tmp2,@X[1],@sigma0[0] # Xupdate($i)
217 $ADDU @X[0],@X[9] # +=X[i+9]
218 $SLL $tmp1,@X[1],`$SZ*8-@sigma0[2]`
219 $SRL $tmp0,@X[1],@sigma0[1]
220 xor $tmp2,$tmp1
221 $SLL $tmp1,`@sigma0[2]-@sigma0[1]`
222 xor $tmp2,$tmp0
223 $SRL $tmp0,@X[1],@sigma0[2]
224 xor $tmp2,$tmp1
225
226 $SRL $tmp3,@X[14],@sigma1[0]
227 xor $tmp2,$tmp0 # sigma0(X[i+1])
228 $SLL $tmp1,@X[14],`$SZ*8-@sigma1[2]`
229 $ADDU @X[0],$tmp2
230 $SRL $tmp0,@X[14],@sigma1[1]
231 xor $tmp3,$tmp1
232 $SLL $tmp1,`@sigma1[2]-@sigma1[1]`
233 xor $tmp3,$tmp0
234 $SRL $tmp0,@X[14],@sigma1[2]
235 xor $tmp3,$tmp1
236
237 xor $tmp3,$tmp0 # sigma1(X[i+14])
238 $ADDU @X[0],$tmp3
239___
240 &BODY_00_15(@_);
241}
242
243$FRAMESIZE=16*$SZ+16*$SZREG;
244$SAVED_REGS_MASK = ($flavour =~ /nubi/i) ? 0xc0fff008 : 0xc0ff0000;
245
246$code.=<<___;
247.text
248.set noat
249#if !defined(__vxworks) || defined(__pic__)
250.option pic2
251#endif
252
253.align 5
254.globl sha${label}_block_data_order
255.ent sha${label}_block_data_order
256sha${label}_block_data_order:
257 .frame $sp,$FRAMESIZE,$ra
258 .mask $SAVED_REGS_MASK,-$SZREG
259 .set noreorder
260___
261$code.=<<___ if ($flavour =~ /o32/i); # o32 PIC-ification
262 .cpload $pf
263___
264$code.=<<___;
265 $PTR_SUB $sp,$FRAMESIZE
266 $REG_S $ra,$FRAMESIZE-1*$SZREG($sp)
267 $REG_S $fp,$FRAMESIZE-2*$SZREG($sp)
268 $REG_S $s11,$FRAMESIZE-3*$SZREG($sp)
269 $REG_S $s10,$FRAMESIZE-4*$SZREG($sp)
270 $REG_S $s9,$FRAMESIZE-5*$SZREG($sp)
271 $REG_S $s8,$FRAMESIZE-6*$SZREG($sp)
272 $REG_S $s7,$FRAMESIZE-7*$SZREG($sp)
273 $REG_S $s6,$FRAMESIZE-8*$SZREG($sp)
274 $REG_S $s5,$FRAMESIZE-9*$SZREG($sp)
275 $REG_S $s4,$FRAMESIZE-10*$SZREG($sp)
276___
277$code.=<<___ if ($flavour =~ /nubi/i); # optimize non-nubi prologue
278 $REG_S $s3,$FRAMESIZE-11*$SZREG($sp)
279 $REG_S $s2,$FRAMESIZE-12*$SZREG($sp)
280 $REG_S $s1,$FRAMESIZE-13*$SZREG($sp)
281 $REG_S $s0,$FRAMESIZE-14*$SZREG($sp)
282 $REG_S $gp,$FRAMESIZE-15*$SZREG($sp)
283___
284$code.=<<___;
285 $PTR_SLL @X[15],$len,`log(16*$SZ)/log(2)`
286___
287$code.=<<___ if ($flavour !~ /o32/i); # non-o32 PIC-ification
288 .cplocal $Ktbl
289 .cpsetup $pf,$zero,sha${label}_block_data_order
290___
291$code.=<<___;
292 .set reorder
293 $LA $Ktbl,K${label} # PIC-ified 'load address'
294
295 $LD $A,0*$SZ($ctx) # load context
296 $LD $B,1*$SZ($ctx)
297 $LD $C,2*$SZ($ctx)
298 $LD $D,3*$SZ($ctx)
299 $LD $E,4*$SZ($ctx)
300 $LD $F,5*$SZ($ctx)
301 $LD $G,6*$SZ($ctx)
302 $LD $H,7*$SZ($ctx)
303
304 $PTR_ADD @X[15],$inp # pointer to the end of input
305 $REG_S @X[15],16*$SZ($sp)
306 b .Loop
307
308.align 5
309.Loop:
310 ${LD}l @X[0],$MSB($inp)
311 ${LD}r @X[0],$LSB($inp)
312___
313for ($i=0;$i<16;$i++)
314{ &BODY_00_15($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
315$code.=<<___;
316 b .L16_xx
317.align 4
318.L16_xx:
319___
320for (;$i<32;$i++)
321{ &BODY_16_XX($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
322$code.=<<___;
323 and @X[6],0xfff
324 li @X[7],$lastK
325 .set noreorder
326 bne @X[6],@X[7],.L16_xx
327 $PTR_ADD $Ktbl,16*$SZ # Ktbl+=16
328
329 $REG_L @X[15],16*$SZ($sp) # restore pointer to the end of input
330 $LD @X[0],0*$SZ($ctx)
331 $LD @X[1],1*$SZ($ctx)
332 $LD @X[2],2*$SZ($ctx)
333 $PTR_ADD $inp,16*$SZ
334 $LD @X[3],3*$SZ($ctx)
335 $ADDU $A,@X[0]
336 $LD @X[4],4*$SZ($ctx)
337 $ADDU $B,@X[1]
338 $LD @X[5],5*$SZ($ctx)
339 $ADDU $C,@X[2]
340 $LD @X[6],6*$SZ($ctx)
341 $ADDU $D,@X[3]
342 $LD @X[7],7*$SZ($ctx)
343 $ADDU $E,@X[4]
344 $ST $A,0*$SZ($ctx)
345 $ADDU $F,@X[5]
346 $ST $B,1*$SZ($ctx)
347 $ADDU $G,@X[6]
348 $ST $C,2*$SZ($ctx)
349 $ADDU $H,@X[7]
350 $ST $D,3*$SZ($ctx)
351 $ST $E,4*$SZ($ctx)
352 $ST $F,5*$SZ($ctx)
353 $ST $G,6*$SZ($ctx)
354 $ST $H,7*$SZ($ctx)
355
356 bne $inp,@X[15],.Loop
357 $PTR_SUB $Ktbl,`($rounds-16)*$SZ` # rewind $Ktbl
358
359 $REG_L $ra,$FRAMESIZE-1*$SZREG($sp)
360 $REG_L $fp,$FRAMESIZE-2*$SZREG($sp)
361 $REG_L $s11,$FRAMESIZE-3*$SZREG($sp)
362 $REG_L $s10,$FRAMESIZE-4*$SZREG($sp)
363 $REG_L $s9,$FRAMESIZE-5*$SZREG($sp)
364 $REG_L $s8,$FRAMESIZE-6*$SZREG($sp)
365 $REG_L $s7,$FRAMESIZE-7*$SZREG($sp)
366 $REG_L $s6,$FRAMESIZE-8*$SZREG($sp)
367 $REG_L $s5,$FRAMESIZE-9*$SZREG($sp)
368 $REG_L $s4,$FRAMESIZE-10*$SZREG($sp)
369___
370$code.=<<___ if ($flavour =~ /nubi/i);
371 $REG_L $s3,$FRAMESIZE-11*$SZREG($sp)
372 $REG_L $s2,$FRAMESIZE-12*$SZREG($sp)
373 $REG_L $s1,$FRAMESIZE-13*$SZREG($sp)
374 $REG_L $s0,$FRAMESIZE-14*$SZREG($sp)
375 $REG_L $gp,$FRAMESIZE-15*$SZREG($sp)
376___
377$code.=<<___;
378 jr $ra
379 $PTR_ADD $sp,$FRAMESIZE
380.end sha${label}_block_data_order
381
382.rdata
383.align 5
384K${label}:
385___
386if ($SZ==4) {
387$code.=<<___;
388 .word 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
389 .word 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
390 .word 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3
391 .word 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
392 .word 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc
393 .word 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
394 .word 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7
395 .word 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
396 .word 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13
397 .word 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
398 .word 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3
399 .word 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
400 .word 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5
401 .word 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
402 .word 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208
403 .word 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
404___
405} else {
406$code.=<<___;
407 .dword 0x428a2f98d728ae22, 0x7137449123ef65cd
408 .dword 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc
409 .dword 0x3956c25bf348b538, 0x59f111f1b605d019
410 .dword 0x923f82a4af194f9b, 0xab1c5ed5da6d8118
411 .dword 0xd807aa98a3030242, 0x12835b0145706fbe
412 .dword 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2
413 .dword 0x72be5d74f27b896f, 0x80deb1fe3b1696b1
414 .dword 0x9bdc06a725c71235, 0xc19bf174cf692694
415 .dword 0xe49b69c19ef14ad2, 0xefbe4786384f25e3
416 .dword 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65
417 .dword 0x2de92c6f592b0275, 0x4a7484aa6ea6e483
418 .dword 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5
419 .dword 0x983e5152ee66dfab, 0xa831c66d2db43210
420 .dword 0xb00327c898fb213f, 0xbf597fc7beef0ee4
421 .dword 0xc6e00bf33da88fc2, 0xd5a79147930aa725
422 .dword 0x06ca6351e003826f, 0x142929670a0e6e70
423 .dword 0x27b70a8546d22ffc, 0x2e1b21385c26c926
424 .dword 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df
425 .dword 0x650a73548baf63de, 0x766a0abb3c77b2a8
426 .dword 0x81c2c92e47edaee6, 0x92722c851482353b
427 .dword 0xa2bfe8a14cf10364, 0xa81a664bbc423001
428 .dword 0xc24b8b70d0f89791, 0xc76c51a30654be30
429 .dword 0xd192e819d6ef5218, 0xd69906245565a910
430 .dword 0xf40e35855771202a, 0x106aa07032bbd1b8
431 .dword 0x19a4c116b8d2d0c8, 0x1e376c085141ab53
432 .dword 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8
433 .dword 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb
434 .dword 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3
435 .dword 0x748f82ee5defb2fc, 0x78a5636f43172f60
436 .dword 0x84c87814a1f0ab72, 0x8cc702081a6439ec
437 .dword 0x90befffa23631e28, 0xa4506cebde82bde9
438 .dword 0xbef9a3f7b2c67915, 0xc67178f2e372532b
439 .dword 0xca273eceea26619c, 0xd186b8c721c0c207
440 .dword 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178
441 .dword 0x06f067aa72176fba, 0x0a637dc5a2c898a6
442 .dword 0x113f9804bef90dae, 0x1b710b35131c471b
443 .dword 0x28db77f523047d84, 0x32caab7b40c72493
444 .dword 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c
445 .dword 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a
446 .dword 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
447___
448}
449$code.=<<___;
450.asciiz "SHA${label} for MIPS, CRYPTOGAMS by <appro\@openssl.org>"
451.align 5
452
453___
454
455$code =~ s/\`([^\`]*)\`/eval $1/gem;
456print $code;
457close STDOUT;
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-06 18:15:47 +0000