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 # ====================================================================
10 # SHA2 block procedures for MIPS.
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.
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:
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));
31 # The return value is placed in $a0. Following coding rules facilitate
34 # - never ever touch $tp, "thread pointer", former $gp;
35 # - copy return value to $t0, former $v0 [or to $a0 if you're adapting
37 # - on O32 populate $a4-$a7 with 'lw $aN,4*N($sp)' if necessary;
39 # For reference here is register layout for N32/64 MIPS ABIs:
41 # ($zero,$at,$v0,$v1)=map("\$$_",(0..3));
42 # ($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
43 # ($t0,$t1,$t2,$t3,$t8,$t9)=map("\$$_",(12..15,24,25));
44 # ($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7)=map("\$$_",(16..23));
45 # ($gp,$sp,$fp,$ra)=map("\$$_",(28..31));
47 $flavour = shift; # supported flavours are o32,n32,64,nubi32,nubi64
49 if ($flavour =~ /64|n32/i) {
50 $PTR_ADD="dadd"; # incidentally works even on n32
51 $PTR_SUB="dsub"; # incidentally works even on n32
54 $PTR_SLL="dsll"; # incidentally works even on n32
67 ######################################################################
70 open STDOUT,">$output";
72 if ($output =~ /512/) {
75 $LD="ld"; # load from memory
76 $ST="sd"; # store to memory
77 $SLL="dsll"; # shift left logical
78 $SRL="dsrl"; # shift right logical
82 @sigma0=( 7, 1, 8); # right shift first
83 @sigma1=( 6,19,61); # right shift first
89 $LD="lw"; # load from memory
90 $ST="sw"; # store to memory
91 $SLL="sll"; # shift left logical
92 $SRL="srl"; # shift right logical
96 @sigma0=( 3, 7,18); # right shift first
97 @sigma1=(10,17,19); # right shift first
102 @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("\$$_",(1,2,3,7,24,25,30,31));
103 @X=map("\$$_",(8..23));
107 $len=$a2; $Ktbl=$len;
110 my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
111 my ($T1,$tmp0,$tmp1,$tmp2)=(@X[4],@X[5],@X[6],@X[7]);
113 $code.=<<___ if ($i<15);
114 ${LD}l @X[1],`($i+1)*$SZ+$MSB`($inp)
115 ${LD}r @X[1],`($i+1)*$SZ+$LSB`($inp)
117 $code.=<<___ if ($little_endian && $i<16); # XXX no 64-bit byte swap yet
118 srl $tmp0,@X[0],24 # byte swap($i)
120 andi $tmp2,@X[0],0xFF00
129 $ADDU $T1,$X[0],$h # $i
130 $SRL $h,$e,@Sigma1[0]
132 $SLL $tmp1,$e,`$SZ*8-@Sigma1[2]`
134 $SRL $tmp0,$e,@Sigma1[1]
136 $SLL $tmp1,$e,`$SZ*8-@Sigma1[1]`
138 $SRL $tmp0,$e,@Sigma1[2]
140 $SLL $tmp1,$e,`$SZ*8-@Sigma1[0]`
142 xor $tmp2,$g # Ch(e,f,g)
143 xor $tmp0,$tmp1,$h # Sigma1(e)
145 $SRL $h,$a,@Sigma0[0]
147 $LD $tmp2,`$i*$SZ`($Ktbl) # K[$i]
148 $SLL $tmp1,$a,`$SZ*8-@Sigma0[2]`
150 $SRL $tmp0,$a,@Sigma0[1]
152 $SLL $tmp1,$a,`$SZ*8-@Sigma0[1]`
154 $SRL $tmp0,$a,@Sigma0[2]
156 $SLL $tmp1,$a,`$SZ*8-@Sigma0[0]`
158 $ST @X[0],`($i%16)*$SZ`($sp)
159 xor $h,$tmp1 # Sigma0(a)
164 or $tmp1,$tmp0 # Maj(a,b,c)
165 $ADDU $T1,$tmp2 # +=K[$i]
171 $code.=<<___ if ($i>=13);
172 $LD @X[3],`(($i+3)%16)*$SZ`($sp) # prefetch
178 my ($tmp0,$tmp1,$tmp2,$tmp3)=(@X[4],@X[5],@X[6],@X[7]);
181 $SRL $tmp2,@X[1],@sigma0[0] # Xupdate($i)
182 $ADDU @X[0],@X[9] # +=X[i+9]
183 $SLL $tmp1,@X[1],`$SZ*8-@sigma0[2]`
184 $SRL $tmp0,@X[1],@sigma0[1]
186 $SLL $tmp1,`@sigma0[2]-@sigma0[1]`
188 $SRL $tmp0,@X[1],@sigma0[2]
191 $SRL $tmp3,@X[14],@sigma1[0]
192 xor $tmp2,$tmp0 # sigma0(X[i+1])
193 $SLL $tmp1,@X[14],`$SZ*8-@sigma1[2]`
195 $SRL $tmp0,@X[14],@sigma1[1]
197 $SLL $tmp1,`@sigma1[2]-@sigma1[1]`
199 $SRL $tmp0,@X[14],@sigma1[2]
202 xor $tmp3,$tmp0 # sigma1(X[i+14])
209 $FRAMESIZE=16*$SZ+16*$SZREG;
210 $SAVED_REGS_MASK = ($flavour =~ /nubi/i) ? 0xc0fff008 : 0xc0ff0000;
211 $pf = ($flavour =~ /nubi/i) ? $t0 : $t2;
213 $LSB = ($SZ-1)&~$MSB;
221 .globl sha${label}_block_data_order
222 .ent sha${label}_block_data_order
223 sha${label}_block_data_order:
224 .frame $sp,$FRAMESIZE,$ra
225 .mask $SAVED_REGS_MASK,-$SZREG
228 $code.=<<___ if ($flavour =~ /o32/i); # o32 PIC-ification
232 $PTR_SUB $sp,$FRAMESIZE
233 $REG_S $ra,$FRAMESIZE-1*$SZREG($sp)
234 $REG_S $fp,$FRAMESIZE-2*$SZREG($sp)
235 $REG_S $s11,$FRAMESIZE-3*$SZREG($sp)
236 $REG_S $s10,$FRAMESIZE-4*$SZREG($sp)
237 $REG_S $s9,$FRAMESIZE-5*$SZREG($sp)
238 $REG_S $s8,$FRAMESIZE-6*$SZREG($sp)
239 $REG_S $s7,$FRAMESIZE-7*$SZREG($sp)
240 $REG_S $s6,$FRAMESIZE-8*$SZREG($sp)
241 $REG_S $s5,$FRAMESIZE-9*$SZREG($sp)
242 $REG_S $s4,$FRAMESIZE-10*$SZREG($sp)
244 $code.=<<___ if ($flavour =~ /nubi/i); # optimize non-nubi prologue
245 $REG_S $s3,$FRAMESIZE-11*$SZREG($sp)
246 $REG_S $s2,$FRAMESIZE-12*$SZREG($sp)
247 $REG_S $s1,$FRAMESIZE-13*$SZREG($sp)
248 $REG_S $s0,$FRAMESIZE-14*$SZREG($sp)
249 $REG_S $gp,$FRAMESIZE-15*$SZREG($sp)
252 $PTR_SLL @X[15],$len,`log(16*$SZ)/log(2)`
254 $code.=<<___ if ($flavour !~ /o32/i); # non-o32 PIC-ification
256 .cpsetup $pf,$zero,sha${label}_block_data_order
260 la $Ktbl,K${label} # PIC-ified 'load address'
262 $LD $A,0*$SZ($ctx) # load context
271 $PTR_ADD @X[15],$inp # pointer to the end of input
272 $REG_S @X[15],16*$SZ($sp)
277 ${LD}l @X[0],$MSB($inp)
278 ${LD}r @X[0],$LSB($inp)
280 for ($i=0;$i<16;$i++)
281 { &BODY_00_15($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
288 { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
292 $PTR_ADD $Ktbl,16*$SZ # Ktbl+=16
293 bne @X[6],@X[7],.L16_xx
295 $LD @X[0],0*$SZ($ctx)
296 $LD @X[1],1*$SZ($ctx)
297 $LD @X[2],2*$SZ($ctx)
298 $LD @X[3],3*$SZ($ctx)
300 $LD @X[4],4*$SZ($ctx)
302 $LD @X[5],5*$SZ($ctx)
304 $LD @X[6],6*$SZ($ctx)
306 $LD @X[7],7*$SZ($ctx)
317 $REG_L @X[15],16*$SZ($sp) # restore pointer to the end of input
322 $PTR_SUB $Ktbl,`($rounds-16)*$SZ` # rewind $Ktbl
323 bne $inp,@X[15],.Loop
326 $REG_L $ra,$FRAMESIZE-1*$SZREG($sp)
327 $REG_L $fp,$FRAMESIZE-2*$SZREG($sp)
328 $REG_L $s11,$FRAMESIZE-3*$SZREG($sp)
329 $REG_L $s10,$FRAMESIZE-4*$SZREG($sp)
330 $REG_L $s9,$FRAMESIZE-5*$SZREG($sp)
331 $REG_L $s8,$FRAMESIZE-6*$SZREG($sp)
332 $REG_L $s7,$FRAMESIZE-7*$SZREG($sp)
333 $REG_L $s6,$FRAMESIZE-8*$SZREG($sp)
334 $REG_L $s5,$FRAMESIZE-9*$SZREG($sp)
335 $REG_L $s4,$FRAMESIZE-10*$SZREG($sp)
337 $code.=<<___ if ($flavour =~ /nubi/i);
338 $REG_L $s3,$FRAMESIZE-11*$SZREG($sp)
339 $REG_L $s2,$FRAMESIZE-12*$SZREG($sp)
340 $REG_L $s1,$FRAMESIZE-13*$SZREG($sp)
341 $REG_L $s0,$FRAMESIZE-14*$SZREG($sp)
342 $REG_L $gp,$FRAMESIZE-15*$SZREG($sp)
346 $PTR_ADD $sp,$FRAMESIZE
347 .end sha${label}_block_data_order
355 .word 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
356 .word 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
357 .word 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3
358 .word 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
359 .word 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc
360 .word 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
361 .word 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7
362 .word 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
363 .word 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13
364 .word 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
365 .word 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3
366 .word 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
367 .word 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5
368 .word 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
369 .word 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208
370 .word 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
374 .dword 0x428a2f98d728ae22, 0x7137449123ef65cd
375 .dword 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc
376 .dword 0x3956c25bf348b538, 0x59f111f1b605d019
377 .dword 0x923f82a4af194f9b, 0xab1c5ed5da6d8118
378 .dword 0xd807aa98a3030242, 0x12835b0145706fbe
379 .dword 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2
380 .dword 0x72be5d74f27b896f, 0x80deb1fe3b1696b1
381 .dword 0x9bdc06a725c71235, 0xc19bf174cf692694
382 .dword 0xe49b69c19ef14ad2, 0xefbe4786384f25e3
383 .dword 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65
384 .dword 0x2de92c6f592b0275, 0x4a7484aa6ea6e483
385 .dword 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5
386 .dword 0x983e5152ee66dfab, 0xa831c66d2db43210
387 .dword 0xb00327c898fb213f, 0xbf597fc7beef0ee4
388 .dword 0xc6e00bf33da88fc2, 0xd5a79147930aa725
389 .dword 0x06ca6351e003826f, 0x142929670a0e6e70
390 .dword 0x27b70a8546d22ffc, 0x2e1b21385c26c926
391 .dword 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df
392 .dword 0x650a73548baf63de, 0x766a0abb3c77b2a8
393 .dword 0x81c2c92e47edaee6, 0x92722c851482353b
394 .dword 0xa2bfe8a14cf10364, 0xa81a664bbc423001
395 .dword 0xc24b8b70d0f89791, 0xc76c51a30654be30
396 .dword 0xd192e819d6ef5218, 0xd69906245565a910
397 .dword 0xf40e35855771202a, 0x106aa07032bbd1b8
398 .dword 0x19a4c116b8d2d0c8, 0x1e376c085141ab53
399 .dword 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8
400 .dword 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb
401 .dword 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3
402 .dword 0x748f82ee5defb2fc, 0x78a5636f43172f60
403 .dword 0x84c87814a1f0ab72, 0x8cc702081a6439ec
404 .dword 0x90befffa23631e28, 0xa4506cebde82bde9
405 .dword 0xbef9a3f7b2c67915, 0xc67178f2e372532b
406 .dword 0xca273eceea26619c, 0xd186b8c721c0c207
407 .dword 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178
408 .dword 0x06f067aa72176fba, 0x0a637dc5a2c898a6
409 .dword 0x113f9804bef90dae, 0x1b710b35131c471b
410 .dword 0x28db77f523047d84, 0x32caab7b40c72493
411 .dword 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c
412 .dword 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a
413 .dword 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
417 .asciiz "SHA${label} for MIPS, CRYPTOGAMS by <appro\@openssl.org>"
422 $code =~ s/\`([^\`]*)\`/eval $1/gem;