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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 # SHA256 block procedure for ARMv4. May 2007. | |
| 11 | |
| 12 # Performance is ~2x better than gcc 3.4 generated code and in "abso- | |
| 13 # lute" terms is ~2250 cycles per 64-byte block or ~35 cycles per | |
| 14 # byte [on single-issue Xscale PXA250 core]. | |
| 15 | |
| 16 # July 2010. | |
| 17 # | |
| 18 # Rescheduling for dual-issue pipeline resulted in 22% improvement on | |
| 19 # Cortex A8 core and ~20 cycles per processed byte. | |
| 20 | |
| 21 # February 2011. | |
| 22 # | |
| 23 # Profiler-assisted and platform-specific optimization resulted in 16% | |
| 24 # improvement on Cortex A8 core and ~17 cycles per processed byte. | |
| 25 | |
| 26 while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} | |
| 27 open STDOUT,">$output"; | |
| 28 | |
| 29 $ctx="r0"; $t0="r0"; | |
| 30 $inp="r1"; $t3="r1"; | |
| 31 $len="r2"; $t1="r2"; | |
| 32 $T1="r3"; | |
| 33 $A="r4"; | |
| 34 $B="r5"; | |
| 35 $C="r6"; | |
| 36 $D="r7"; | |
| 37 $E="r8"; | |
| 38 $F="r9"; | |
| 39 $G="r10"; | |
| 40 $H="r11"; | |
| 41 @V=($A,$B,$C,$D,$E,$F,$G,$H); | |
| 42 $t2="r12"; | |
| 43 $Ktbl="r14"; | |
| 44 | |
| 45 @Sigma0=( 2,13,22); | |
| 46 @Sigma1=( 6,11,25); | |
| 47 @sigma0=( 7,18, 3); | |
| 48 @sigma1=(17,19,10); | |
| 49 | |
| 50 sub BODY_00_15 { | |
| 51 my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; | |
| 52 | |
| 53 $code.=<<___ if ($i<16); | |
| 54 #if __ARM_ARCH__>=7 | |
| 55 ldr $T1,[$inp],#4 | |
| 56 #else | |
| 57 ldrb $T1,[$inp,#3] @ $i | |
| 58 ldrb $t2,[$inp,#2] | |
| 59 ldrb $t1,[$inp,#1] | |
| 60 ldrb $t0,[$inp],#4 | |
| 61 orr $T1,$T1,$t2,lsl#8 | |
| 62 orr $T1,$T1,$t1,lsl#16 | |
| 63 orr $T1,$T1,$t0,lsl#24 | |
| 64 #endif | |
| 65 ___ | |
| 66 $code.=<<___; | |
| 67 mov $t0,$e,ror#$Sigma1[0] | |
| 68 ldr $t2,[$Ktbl],#4 @ *K256++ | |
| 69 eor $t0,$t0,$e,ror#$Sigma1[1] | |
| 70 eor $t1,$f,$g | |
| 71 #if $i>=16 | |
| 72 add $T1,$T1,$t3 @ from BODY_16_xx | |
| 73 #elif __ARM_ARCH__>=7 && defined(__ARMEL__) | |
| 74 rev $T1,$T1 | |
| 75 #endif | |
| 76 #if $i==15 | |
| 77 str $inp,[sp,#17*4] @ leave room for $t3 | |
| 78 #endif | |
| 79 eor $t0,$t0,$e,ror#$Sigma1[2] @ Sigma1(e) | |
| 80 and $t1,$t1,$e | |
| 81 str $T1,[sp,#`$i%16`*4] | |
| 82 add $T1,$T1,$t0 | |
| 83 eor $t1,$t1,$g @ Ch(e,f,g) | |
| 84 add $T1,$T1,$h | |
| 85 mov $h,$a,ror#$Sigma0[0] | |
| 86 add $T1,$T1,$t1 | |
| 87 eor $h,$h,$a,ror#$Sigma0[1] | |
| 88 add $T1,$T1,$t2 | |
| 89 eor $h,$h,$a,ror#$Sigma0[2] @ Sigma0(a) | |
| 90 #if $i>=15 | |
| 91 ldr $t3,[sp,#`($i+2)%16`*4] @ from BODY_16_xx | |
| 92 #endif | |
| 93 orr $t0,$a,$b | |
| 94 and $t1,$a,$b | |
| 95 and $t0,$t0,$c | |
| 96 add $h,$h,$T1 | |
| 97 orr $t0,$t0,$t1 @ Maj(a,b,c) | |
| 98 add $d,$d,$T1 | |
| 99 add $h,$h,$t0 | |
| 100 ___ | |
| 101 } | |
| 102 | |
| 103 sub BODY_16_XX { | |
| 104 my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; | |
| 105 | |
| 106 $code.=<<___; | |
| 107 @ ldr $t3,[sp,#`($i+1)%16`*4] @ $i | |
| 108 ldr $t2,[sp,#`($i+14)%16`*4] | |
| 109 mov $t0,$t3,ror#$sigma0[0] | |
| 110 ldr $T1,[sp,#`($i+0)%16`*4] | |
| 111 eor $t0,$t0,$t3,ror#$sigma0[1] | |
| 112 ldr $t1,[sp,#`($i+9)%16`*4] | |
| 113 eor $t0,$t0,$t3,lsr#$sigma0[2] @ sigma0(X[i+1]) | |
| 114 mov $t3,$t2,ror#$sigma1[0] | |
| 115 add $T1,$T1,$t0 | |
| 116 eor $t3,$t3,$t2,ror#$sigma1[1] | |
| 117 add $T1,$T1,$t1 | |
| 118 eor $t3,$t3,$t2,lsr#$sigma1[2] @ sigma1(X[i+14]) | |
| 119 @ add $T1,$T1,$t3 | |
| 120 ___ | |
| 121 &BODY_00_15(@_); | |
| 122 } | |
| 123 | |
| 124 $code=<<___; | |
| 125 #include "arm_arch.h" | |
| 126 | |
| 127 .text | |
| 128 .code 32 | |
| 129 | |
| 130 .type K256,%object | |
| 131 .align 5 | |
| 132 K256: | |
| 133 .word 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5 | |
| 134 .word 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5 | |
| 135 .word 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3 | |
| 136 .word 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174 | |
| 137 .word 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc | |
| 138 .word 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da | |
| 139 .word 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7 | |
| 140 .word 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967 | |
| 141 .word 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13 | |
| 142 .word 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85 | |
| 143 .word 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3 | |
| 144 .word 0xd192e819,0xd6990624,0xf40e3585,0x106aa070 | |
| 145 .word 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5 | |
| 146 .word 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3 | |
| 147 .word 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208 | |
| 148 .word 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 | |
| 149 .size K256,.-K256 | |
| 150 | |
| 151 .global sha256_block_data_order | |
| 152 .type sha256_block_data_order,%function | |
| 153 sha256_block_data_order: | |
| 154 sub r3,pc,#8 @ sha256_block_data_order | |
| 155 add $len,$inp,$len,lsl#6 @ len to point at the end of inp | |
| 156 stmdb sp!,{$ctx,$inp,$len,r4-r11,lr} | |
| 157 ldmia $ctx,{$A,$B,$C,$D,$E,$F,$G,$H} | |
| 158 sub $Ktbl,r3,#256 @ K256 | |
| 159 sub sp,sp,#16*4 @ alloca(X[16]) | |
| 160 .Loop: | |
| 161 ___ | |
| 162 for($i=0;$i<16;$i++) { &BODY_00_15($i,@V); unshift(@V,pop(@V)); } | |
| 163 $code.=".Lrounds_16_xx:\n"; | |
| 164 for (;$i<32;$i++) { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); } | |
| 165 $code.=<<___; | |
| 166 and $t2,$t2,#0xff | |
| 167 cmp $t2,#0xf2 | |
| 168 bne .Lrounds_16_xx | |
| 169 | |
| 170 ldr $T1,[sp,#16*4] @ pull ctx | |
| 171 ldr $t0,[$T1,#0] | |
| 172 ldr $t1,[$T1,#4] | |
| 173 ldr $t2,[$T1,#8] | |
| 174 add $A,$A,$t0 | |
| 175 ldr $t0,[$T1,#12] | |
| 176 add $B,$B,$t1 | |
| 177 ldr $t1,[$T1,#16] | |
| 178 add $C,$C,$t2 | |
| 179 ldr $t2,[$T1,#20] | |
| 180 add $D,$D,$t0 | |
| 181 ldr $t0,[$T1,#24] | |
| 182 add $E,$E,$t1 | |
| 183 ldr $t1,[$T1,#28] | |
| 184 add $F,$F,$t2 | |
| 185 ldr $inp,[sp,#17*4] @ pull inp | |
| 186 ldr $t2,[sp,#18*4] @ pull inp+len | |
| 187 add $G,$G,$t0 | |
| 188 add $H,$H,$t1 | |
| 189 stmia $T1,{$A,$B,$C,$D,$E,$F,$G,$H} | |
| 190 cmp $inp,$t2 | |
| 191 sub $Ktbl,$Ktbl,#256 @ rewind Ktbl | |
| 192 bne .Loop | |
| 193 | |
| 194 add sp,sp,#`16+3`*4 @ destroy frame | |
| 195 #if __ARM_ARCH__>=5 | |
| 196 ldmia sp!,{r4-r11,pc} | |
| 197 #else | |
| 198 ldmia sp!,{r4-r11,lr} | |
| 199 tst lr,#1 | |
| 200 moveq pc,lr @ be binary compatible with V4, yet | |
| 201 bx lr @ interoperable with Thumb ISA:-) | |
| 202 #endif | |
| 203 .size sha256_block_data_order,.-sha256_block_data_order | |
| 204 .asciz "SHA256 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>" | |
| 205 .align 2 | |
| 206 ___ | |
| 207 | |
| 208 $code =~ s/\`([^\`]*)\`/eval $1/gem; | |
| 209 $code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile wi
th -march=armv4 | |
| 210 print $code; | |
| 211 close STDOUT; # enforce flush | |
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Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master