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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 # sha1_block procedure for ARMv4. | |
| 11 # | |
| 12 # January 2007. | |
| 13 | |
| 14 # Size/performance trade-off | |
| 15 # ==================================================================== | |
| 16 # impl size in bytes comp cycles[*] measured performance | |
| 17 # ==================================================================== | |
| 18 # thumb 304 3212 4420 | |
| 19 # armv4-small 392/+29% 1958/+64% 2250/+96% | |
| 20 # armv4-compact 740/+89% 1552/+26% 1840/+22% | |
| 21 # armv4-large 1420/+92% 1307/+19% 1370/+34%[***] | |
| 22 # full unroll ~5100/+260% ~1260/+4% ~1300/+5% | |
| 23 # ==================================================================== | |
| 24 # thumb = same as 'small' but in Thumb instructions[**] and | |
| 25 # with recurring code in two private functions; | |
| 26 # small = detached Xload/update, loops are folded; | |
| 27 # compact = detached Xload/update, 5x unroll; | |
| 28 # large = interleaved Xload/update, 5x unroll; | |
| 29 # full unroll = interleaved Xload/update, full unroll, estimated[!]; | |
| 30 # | |
| 31 # [*] Manually counted instructions in "grand" loop body. Measured | |
| 32 # performance is affected by prologue and epilogue overhead, | |
| 33 # i-cache availability, branch penalties, etc. | |
| 34 # [**] While each Thumb instruction is twice smaller, they are not as | |
| 35 # diverse as ARM ones: e.g., there are only two arithmetic | |
| 36 # instructions with 3 arguments, no [fixed] rotate, addressing | |
| 37 # modes are limited. As result it takes more instructions to do | |
| 38 # the same job in Thumb, therefore the code is never twice as | |
| 39 # small and always slower. | |
| 40 # [***] which is also ~35% better than compiler generated code. Dual- | |
| 41 # issue Cortex A8 core was measured to process input block in | |
| 42 # ~990 cycles. | |
| 43 | |
| 44 # August 2010. | |
| 45 # | |
| 46 # Rescheduling for dual-issue pipeline resulted in 13% improvement on | |
| 47 # Cortex A8 core and in absolute terms ~870 cycles per input block | |
| 48 # [or 13.6 cycles per byte]. | |
| 49 | |
| 50 # February 2011. | |
| 51 # | |
| 52 # Profiler-assisted and platform-specific optimization resulted in 10% | |
| 53 # improvement on Cortex A8 core and 12.2 cycles per byte. | |
| 54 | |
| 55 while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} | |
| 56 open STDOUT,">$output"; | |
| 57 | |
| 58 $ctx="r0"; | |
| 59 $inp="r1"; | |
| 60 $len="r2"; | |
| 61 $a="r3"; | |
| 62 $b="r4"; | |
| 63 $c="r5"; | |
| 64 $d="r6"; | |
| 65 $e="r7"; | |
| 66 $K="r8"; | |
| 67 $t0="r9"; | |
| 68 $t1="r10"; | |
| 69 $t2="r11"; | |
| 70 $t3="r12"; | |
| 71 $Xi="r14"; | |
| 72 @V=($a,$b,$c,$d,$e); | |
| 73 | |
| 74 sub Xupdate { | |
| 75 my ($a,$b,$c,$d,$e,$opt1,$opt2)=@_; | |
| 76 $code.=<<___; | |
| 77 ldr $t0,[$Xi,#15*4] | |
| 78 ldr $t1,[$Xi,#13*4] | |
| 79 ldr $t2,[$Xi,#7*4] | |
| 80 add $e,$K,$e,ror#2 @ E+=K_xx_xx | |
| 81 ldr $t3,[$Xi,#2*4] | |
| 82 eor $t0,$t0,$t1 | |
| 83 eor $t2,$t2,$t3 @ 1 cycle stall | |
| 84 eor $t1,$c,$d @ F_xx_xx | |
| 85 mov $t0,$t0,ror#31 | |
| 86 add $e,$e,$a,ror#27 @ E+=ROR(A,27) | |
| 87 eor $t0,$t0,$t2,ror#31 | |
| 88 str $t0,[$Xi,#-4]! | |
| 89 $opt1 @ F_xx_xx | |
| 90 $opt2 @ F_xx_xx | |
| 91 add $e,$e,$t0 @ E+=X[i] | |
| 92 ___ | |
| 93 } | |
| 94 | |
| 95 sub BODY_00_15 { | |
| 96 my ($a,$b,$c,$d,$e)=@_; | |
| 97 $code.=<<___; | |
| 98 #if __ARM_ARCH__<7 | |
| 99 ldrb $t1,[$inp,#2] | |
| 100 ldrb $t0,[$inp,#3] | |
| 101 ldrb $t2,[$inp,#1] | |
| 102 add $e,$K,$e,ror#2 @ E+=K_00_19 | |
| 103 ldrb $t3,[$inp],#4 | |
| 104 orr $t0,$t0,$t1,lsl#8 | |
| 105 eor $t1,$c,$d @ F_xx_xx | |
| 106 orr $t0,$t0,$t2,lsl#16 | |
| 107 add $e,$e,$a,ror#27 @ E+=ROR(A,27) | |
| 108 orr $t0,$t0,$t3,lsl#24 | |
| 109 #else | |
| 110 ldr $t0,[$inp],#4 @ handles unaligned | |
| 111 add $e,$K,$e,ror#2 @ E+=K_00_19 | |
| 112 eor $t1,$c,$d @ F_xx_xx | |
| 113 add $e,$e,$a,ror#27 @ E+=ROR(A,27) | |
| 114 #ifdef __ARMEL__ | |
| 115 rev $t0,$t0 @ byte swap | |
| 116 #endif | |
| 117 #endif | |
| 118 and $t1,$b,$t1,ror#2 | |
| 119 add $e,$e,$t0 @ E+=X[i] | |
| 120 eor $t1,$t1,$d,ror#2 @ F_00_19(B,C,D) | |
| 121 str $t0,[$Xi,#-4]! | |
| 122 add $e,$e,$t1 @ E+=F_00_19(B,C,D) | |
| 123 ___ | |
| 124 } | |
| 125 | |
| 126 sub BODY_16_19 { | |
| 127 my ($a,$b,$c,$d,$e)=@_; | |
| 128 &Xupdate(@_,"and $t1,$b,$t1,ror#2"); | |
| 129 $code.=<<___; | |
| 130 eor $t1,$t1,$d,ror#2 @ F_00_19(B,C,D) | |
| 131 add $e,$e,$t1 @ E+=F_00_19(B,C,D) | |
| 132 ___ | |
| 133 } | |
| 134 | |
| 135 sub BODY_20_39 { | |
| 136 my ($a,$b,$c,$d,$e)=@_; | |
| 137 &Xupdate(@_,"eor $t1,$b,$t1,ror#2"); | |
| 138 $code.=<<___; | |
| 139 add $e,$e,$t1 @ E+=F_20_39(B,C,D) | |
| 140 ___ | |
| 141 } | |
| 142 | |
| 143 sub BODY_40_59 { | |
| 144 my ($a,$b,$c,$d,$e)=@_; | |
| 145 &Xupdate(@_,"and $t1,$b,$t1,ror#2","and $t2,$c,$d"); | |
| 146 $code.=<<___; | |
| 147 add $e,$e,$t1 @ E+=F_40_59(B,C,D) | |
| 148 add $e,$e,$t2,ror#2 | |
| 149 ___ | |
| 150 } | |
| 151 | |
| 152 $code=<<___; | |
| 153 #include "arm_arch.h" | |
| 154 | |
| 155 .text | |
| 156 | |
| 157 .global sha1_block_data_order | |
| 158 .type sha1_block_data_order,%function | |
| 159 | |
| 160 .align 2 | |
| 161 sha1_block_data_order: | |
| 162 stmdb sp!,{r4-r12,lr} | |
| 163 add $len,$inp,$len,lsl#6 @ $len to point at the end of $inp | |
| 164 ldmia $ctx,{$a,$b,$c,$d,$e} | |
| 165 .Lloop: | |
| 166 ldr $K,.LK_00_19 | |
| 167 mov $Xi,sp | |
| 168 sub sp,sp,#15*4 | |
| 169 mov $c,$c,ror#30 | |
| 170 mov $d,$d,ror#30 | |
| 171 mov $e,$e,ror#30 @ [6] | |
| 172 .L_00_15: | |
| 173 ___ | |
| 174 for($i=0;$i<5;$i++) { | |
| 175 &BODY_00_15(@V); unshift(@V,pop(@V)); | |
| 176 } | |
| 177 $code.=<<___; | |
| 178 teq $Xi,sp | |
| 179 bne .L_00_15 @ [((11+4)*5+2)*3] | |
| 180 sub sp,sp,#25*4 | |
| 181 ___ | |
| 182 &BODY_00_15(@V); unshift(@V,pop(@V)); | |
| 183 &BODY_16_19(@V); unshift(@V,pop(@V)); | |
| 184 &BODY_16_19(@V); unshift(@V,pop(@V)); | |
| 185 &BODY_16_19(@V); unshift(@V,pop(@V)); | |
| 186 &BODY_16_19(@V); unshift(@V,pop(@V)); | |
| 187 $code.=<<___; | |
| 188 | |
| 189 ldr $K,.LK_20_39 @ [+15+16*4] | |
| 190 cmn sp,#0 @ [+3], clear carry to denote 20_39 | |
| 191 .L_20_39_or_60_79: | |
| 192 ___ | |
| 193 for($i=0;$i<5;$i++) { | |
| 194 &BODY_20_39(@V); unshift(@V,pop(@V)); | |
| 195 } | |
| 196 $code.=<<___; | |
| 197 teq $Xi,sp @ preserve carry | |
| 198 bne .L_20_39_or_60_79 @ [+((12+3)*5+2)*4] | |
| 199 bcs .L_done @ [+((12+3)*5+2)*4], spare 300 bytes | |
| 200 | |
| 201 ldr $K,.LK_40_59 | |
| 202 sub sp,sp,#20*4 @ [+2] | |
| 203 .L_40_59: | |
| 204 ___ | |
| 205 for($i=0;$i<5;$i++) { | |
| 206 &BODY_40_59(@V); unshift(@V,pop(@V)); | |
| 207 } | |
| 208 $code.=<<___; | |
| 209 teq $Xi,sp | |
| 210 bne .L_40_59 @ [+((12+5)*5+2)*4] | |
| 211 | |
| 212 ldr $K,.LK_60_79 | |
| 213 sub sp,sp,#20*4 | |
| 214 cmp sp,#0 @ set carry to denote 60_79 | |
| 215 b .L_20_39_or_60_79 @ [+4], spare 300 bytes | |
| 216 .L_done: | |
| 217 add sp,sp,#80*4 @ "deallocate" stack frame | |
| 218 ldmia $ctx,{$K,$t0,$t1,$t2,$t3} | |
| 219 add $a,$K,$a | |
| 220 add $b,$t0,$b | |
| 221 add $c,$t1,$c,ror#2 | |
| 222 add $d,$t2,$d,ror#2 | |
| 223 add $e,$t3,$e,ror#2 | |
| 224 stmia $ctx,{$a,$b,$c,$d,$e} | |
| 225 teq $inp,$len | |
| 226 bne .Lloop @ [+18], total 1307 | |
| 227 | |
| 228 #if __ARM_ARCH__>=5 | |
| 229 ldmia sp!,{r4-r12,pc} | |
| 230 #else | |
| 231 ldmia sp!,{r4-r12,lr} | |
| 232 tst lr,#1 | |
| 233 moveq pc,lr @ be binary compatible with V4, yet | |
| 234 bx lr @ interoperable with Thumb ISA:-) | |
| 235 #endif | |
| 236 .align 2 | |
| 237 .LK_00_19: .word 0x5a827999 | |
| 238 .LK_20_39: .word 0x6ed9eba1 | |
| 239 .LK_40_59: .word 0x8f1bbcdc | |
| 240 .LK_60_79: .word 0xca62c1d6 | |
| 241 .size sha1_block_data_order,.-sha1_block_data_order | |
| 242 .asciz "SHA1 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>" | |
| 243 .align 2 | |
| 244 ___ | |
| 245 | |
| 246 $code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile wi
th -march=armv4 | |
| 247 print $code; | |
| 248 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