1 #!/usr/bin/env perl 2 3 # ==================================================================== 4 # Written by Andy Polyakov <appro (at] 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 # SHA256/512 block procedures for s390x. 11 12 # April 2007. 13 # 14 # sha256_block_data_order is reportedly >3 times faster than gcc 3.3 15 # generated code (must be a bug in compiler, as improvement is 16 # "pathologically" high, in particular in comparison to other SHA 17 # modules). But the real twist is that it detects if hardware support 18 # for SHA256 is available and in such case utilizes it. Then the 19 # performance can reach >6.5x of assembler one for larger chunks. 20 # 21 # sha512_block_data_order is ~70% faster than gcc 3.3 generated code. 22 23 # January 2009. 24 # 25 # Add support for hardware SHA512 and reschedule instructions to 26 # favour dual-issue z10 pipeline. Hardware SHA256/512 is ~4.7x faster 27 # than software. 28 29 # November 2010. 30 # 31 # Adapt for -m31 build. If kernel supports what's called "highgprs" 32 # feature on Linux [see /proc/cpuinfo], it's possible to use 64-bit 33 # instructions and achieve "64-bit" performance even in 31-bit legacy 34 # application context. The feature is not specific to any particular 35 # processor, as long as it's "z-CPU". Latter implies that the code 36 # remains z/Architecture specific. On z900 SHA256 was measured to 37 # perform 2.4x and SHA512 - 13x better than code generated by gcc 4.3. 38 39 $flavour = shift; 40 41 if ($flavour =~ /3[12]/) { 42 $SIZE_T=4; 43 $g=""; 44 } else { 45 $SIZE_T=8; 46 $g="g"; 47 } 48 49 $t0="%r0"; 50 $t1="%r1"; 51 $ctx="%r2"; $t2="%r2"; 52 $inp="%r3"; 53 $len="%r4"; # used as index in inner loop 54 55 $A="%r5"; 56 $B="%r6"; 57 $C="%r7"; 58 $D="%r8"; 59 $E="%r9"; 60 $F="%r10"; 61 $G="%r11"; 62 $H="%r12"; @V=($A,$B,$C,$D,$E,$F,$G,$H); 63 $tbl="%r13"; 64 $T1="%r14"; 65 $sp="%r15"; 66 67 while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} 68 open STDOUT,">$output"; 69 70 if ($output =~ /512/) { 71 $label="512"; 72 $SZ=8; 73 $LD="lg"; # load from memory 74 $ST="stg"; # store to memory 75 $ADD="alg"; # add with memory operand 76 $ROT="rllg"; # rotate left 77 $SHR="srlg"; # logical right shift [see even at the end] 78 @Sigma0=(25,30,36); 79 @Sigma1=(23,46,50); 80 @sigma0=(56,63, 7); 81 @sigma1=( 3,45, 6); 82 $rounds=80; 83 $kimdfunc=3; # 0 means unknown/unsupported/unimplemented/disabled 84 } else { 85 $label="256"; 86 $SZ=4; 87 $LD="llgf"; # load from memory 88 $ST="st"; # store to memory 89 $ADD="al"; # add with memory operand 90 $ROT="rll"; # rotate left 91 $SHR="srl"; # logical right shift 92 @Sigma0=(10,19,30); 93 @Sigma1=( 7,21,26); 94 @sigma0=(14,25, 3); 95 @sigma1=(13,15,10); 96 $rounds=64; 97 $kimdfunc=2; # magic function code for kimd instruction 98 } 99 $Func="sha${label}_block_data_order"; 100 $Table="K${label}"; 101 $stdframe=16*$SIZE_T+4*8; 102 $frame=$stdframe+16*$SZ; 103 104 sub BODY_00_15 { 105 my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; 106 107 $code.=<<___ if ($i<16); 108 $LD $T1,`$i*$SZ`($inp) ### $i 109 ___ 110 $code.=<<___; 111 $ROT $t0,$e,$Sigma1[0] 112 $ROT $t1,$e,$Sigma1[1] 113 lgr $t2,$f 114 xgr $t0,$t1 115 $ROT $t1,$t1,`$Sigma1[2]-$Sigma1[1]` 116 xgr $t2,$g 117 $ST $T1,`$stdframe+$SZ*($i%16)`($sp) 118 xgr $t0,$t1 # Sigma1(e) 119 algr $T1,$h # T1+=h 120 ngr $t2,$e 121 lgr $t1,$a 122 algr $T1,$t0 # T1+=Sigma1(e) 123 $ROT $h,$a,$Sigma0[0] 124 xgr $t2,$g # Ch(e,f,g) 125 $ADD $T1,`$i*$SZ`($len,$tbl) # T1+=K[i] 126 $ROT $t0,$a,$Sigma0[1] 127 algr $T1,$t2 # T1+=Ch(e,f,g) 128 ogr $t1,$b 129 xgr $h,$t0 130 lgr $t2,$a 131 ngr $t1,$c 132 $ROT $t0,$t0,`$Sigma0[2]-$Sigma0[1]` 133 xgr $h,$t0 # h=Sigma0(a) 134 ngr $t2,$b 135 algr $h,$T1 # h+=T1 136 ogr $t2,$t1 # Maj(a,b,c) 137 algr $d,$T1 # d+=T1 138 algr $h,$t2 # h+=Maj(a,b,c) 139 ___ 140 } 141 142 sub BODY_16_XX { 143 my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; 144 145 $code.=<<___; 146 $LD $T1,`$stdframe+$SZ*(($i+1)%16)`($sp) ### $i 147 $LD $t1,`$stdframe+$SZ*(($i+14)%16)`($sp) 148 $ROT $t0,$T1,$sigma0[0] 149 $SHR $T1,$sigma0[2] 150 $ROT $t2,$t0,`$sigma0[1]-$sigma0[0]` 151 xgr $T1,$t0 152 $ROT $t0,$t1,$sigma1[0] 153 xgr $T1,$t2 # sigma0(X[i+1]) 154 $SHR $t1,$sigma1[2] 155 $ADD $T1,`$stdframe+$SZ*($i%16)`($sp) # +=X[i] 156 xgr $t1,$t0 157 $ROT $t0,$t0,`$sigma1[1]-$sigma1[0]` 158 $ADD $T1,`$stdframe+$SZ*(($i+9)%16)`($sp) # +=X[i+9] 159 xgr $t1,$t0 # sigma1(X[i+14]) 160 algr $T1,$t1 # +=sigma1(X[i+14]) 161 ___ 162 &BODY_00_15(@_); 163 } 164 165 $code.=<<___; 166 .text 167 .align 64 168 .type $Table,\@object 169 $Table: 170 ___ 171 $code.=<<___ if ($SZ==4); 172 .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5 173 .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5 174 .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3 175 .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174 176 .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc 177 .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da 178 .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7 179 .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967 180 .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13 181 .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85 182 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3 183 .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070 184 .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5 185 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3 186 .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208 187 .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 188 ___ 189 $code.=<<___ if ($SZ==8); 190 .quad 0x428a2f98d728ae22,0x7137449123ef65cd 191 .quad 0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc 192 .quad 0x3956c25bf348b538,0x59f111f1b605d019 193 .quad 0x923f82a4af194f9b,0xab1c5ed5da6d8118 194 .quad 0xd807aa98a3030242,0x12835b0145706fbe 195 .quad 0x243185be4ee4b28c,0x550c7dc3d5ffb4e2 196 .quad 0x72be5d74f27b896f,0x80deb1fe3b1696b1 197 .quad 0x9bdc06a725c71235,0xc19bf174cf692694 198 .quad 0xe49b69c19ef14ad2,0xefbe4786384f25e3 199 .quad 0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65 200 .quad 0x2de92c6f592b0275,0x4a7484aa6ea6e483 201 .quad 0x5cb0a9dcbd41fbd4,0x76f988da831153b5 202 .quad 0x983e5152ee66dfab,0xa831c66d2db43210 203 .quad 0xb00327c898fb213f,0xbf597fc7beef0ee4 204 .quad 0xc6e00bf33da88fc2,0xd5a79147930aa725 205 .quad 0x06ca6351e003826f,0x142929670a0e6e70 206 .quad 0x27b70a8546d22ffc,0x2e1b21385c26c926 207 .quad 0x4d2c6dfc5ac42aed,0x53380d139d95b3df 208 .quad 0x650a73548baf63de,0x766a0abb3c77b2a8 209 .quad 0x81c2c92e47edaee6,0x92722c851482353b 210 .quad 0xa2bfe8a14cf10364,0xa81a664bbc423001 211 .quad 0xc24b8b70d0f89791,0xc76c51a30654be30 212 .quad 0xd192e819d6ef5218,0xd69906245565a910 213 .quad 0xf40e35855771202a,0x106aa07032bbd1b8 214 .quad 0x19a4c116b8d2d0c8,0x1e376c085141ab53 215 .quad 0x2748774cdf8eeb99,0x34b0bcb5e19b48a8 216 .quad 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb 217 .quad 0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3 218 .quad 0x748f82ee5defb2fc,0x78a5636f43172f60 219 .quad 0x84c87814a1f0ab72,0x8cc702081a6439ec 220 .quad 0x90befffa23631e28,0xa4506cebde82bde9 221 .quad 0xbef9a3f7b2c67915,0xc67178f2e372532b 222 .quad 0xca273eceea26619c,0xd186b8c721c0c207 223 .quad 0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178 224 .quad 0x06f067aa72176fba,0x0a637dc5a2c898a6 225 .quad 0x113f9804bef90dae,0x1b710b35131c471b 226 .quad 0x28db77f523047d84,0x32caab7b40c72493 227 .quad 0x3c9ebe0a15c9bebc,0x431d67c49c100d4c 228 .quad 0x4cc5d4becb3e42b6,0x597f299cfc657e2a 229 .quad 0x5fcb6fab3ad6faec,0x6c44198c4a475817 230 ___ 231 $code.=<<___; 232 .size $Table,.-$Table 233 .globl $Func 234 .type $Func,\@function 235 $Func: 236 sllg $len,$len,`log(16*$SZ)/log(2)` 237 ___ 238 $code.=<<___ if ($kimdfunc); 239 larl %r1,OPENSSL_s390xcap_P 240 lg %r0,0(%r1) 241 tmhl %r0,0x4000 # check for message-security assist 242 jz .Lsoftware 243 lghi %r0,0 244 la %r1,`2*$SIZE_T`($sp) 245 .long 0xb93e0002 # kimd %r0,%r2 246 lg %r0,`2*$SIZE_T`($sp) 247 tmhh %r0,`0x8000>>$kimdfunc` 248 jz .Lsoftware 249 lghi %r0,$kimdfunc 250 lgr %r1,$ctx 251 lgr %r2,$inp 252 lgr %r3,$len 253 .long 0xb93e0002 # kimd %r0,%r2 254 brc 1,.-4 # pay attention to "partial completion" 255 br %r14 256 .align 16 257 .Lsoftware: 258 ___ 259 $code.=<<___; 260 lghi %r1,-$frame 261 la $len,0($len,$inp) 262 stm${g} $ctx,%r15,`2*$SIZE_T`($sp) 263 lgr %r0,$sp 264 la $sp,0(%r1,$sp) 265 st${g} %r0,0($sp) 266 267 larl $tbl,$Table 268 $LD $A,`0*$SZ`($ctx) 269 $LD $B,`1*$SZ`($ctx) 270 $LD $C,`2*$SZ`($ctx) 271 $LD $D,`3*$SZ`($ctx) 272 $LD $E,`4*$SZ`($ctx) 273 $LD $F,`5*$SZ`($ctx) 274 $LD $G,`6*$SZ`($ctx) 275 $LD $H,`7*$SZ`($ctx) 276 277 .Lloop: 278 lghi $len,0 279 ___ 280 for ($i=0;$i<16;$i++) { &BODY_00_15($i,@V); unshift(@V,pop(@V)); } 281 $code.=".Lrounds_16_xx:\n"; 282 for (;$i<32;$i++) { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); } 283 $code.=<<___; 284 aghi $len,`16*$SZ` 285 lghi $t0,`($rounds-16)*$SZ` 286 clgr $len,$t0 287 jne .Lrounds_16_xx 288 289 l${g} $ctx,`$frame+2*$SIZE_T`($sp) 290 la $inp,`16*$SZ`($inp) 291 $ADD $A,`0*$SZ`($ctx) 292 $ADD $B,`1*$SZ`($ctx) 293 $ADD $C,`2*$SZ`($ctx) 294 $ADD $D,`3*$SZ`($ctx) 295 $ADD $E,`4*$SZ`($ctx) 296 $ADD $F,`5*$SZ`($ctx) 297 $ADD $G,`6*$SZ`($ctx) 298 $ADD $H,`7*$SZ`($ctx) 299 $ST $A,`0*$SZ`($ctx) 300 $ST $B,`1*$SZ`($ctx) 301 $ST $C,`2*$SZ`($ctx) 302 $ST $D,`3*$SZ`($ctx) 303 $ST $E,`4*$SZ`($ctx) 304 $ST $F,`5*$SZ`($ctx) 305 $ST $G,`6*$SZ`($ctx) 306 $ST $H,`7*$SZ`($ctx) 307 cl${g} $inp,`$frame+4*$SIZE_T`($sp) 308 jne .Lloop 309 310 lm${g} %r6,%r15,`$frame+6*$SIZE_T`($sp) 311 br %r14 312 .size $Func,.-$Func 313 .string "SHA${label} block transform for s390x, CRYPTOGAMS by <appro\@openssl.org>" 314 .comm OPENSSL_s390xcap_P,16,8 315 ___ 316 317 $code =~ s/\`([^\`]*)\`/eval $1/gem; 318 # unlike 32-bit shift 64-bit one takes three arguments 319 $code =~ s/(srlg\s+)(%r[0-9]+),/$1$2,$2,/gm; 320 321 print $code; 322 close STDOUT; 323
