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;