mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-03 13:13:30 +01:00
212 lines
5.2 KiB
Prolog
212 lines
5.2 KiB
Prolog
#!/usr/bin/env perl
|
|
|
|
# ====================================================================
|
|
# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
|
|
# project. The module is, however, dual licensed under OpenSSL and
|
|
# CRYPTOGAMS licenses depending on where you obtain it. For further
|
|
# details see http://www.openssl.org/~appro/cryptogams/.
|
|
# ====================================================================
|
|
|
|
# SHA256 block procedure for ARMv4. May 2007.
|
|
|
|
# Performance is ~2x better than gcc 3.4 generated code and in "abso-
|
|
# lute" terms is ~2250 cycles per 64-byte block or ~35 cycles per
|
|
# byte [on single-issue Xscale PXA250 core].
|
|
|
|
# July 2010.
|
|
#
|
|
# Rescheduling for dual-issue pipeline resulted in 22% improvement on
|
|
# Cortex A8 core and ~20 cycles per processed byte.
|
|
|
|
# February 2011.
|
|
#
|
|
# Profiler-assisted and platform-specific optimization resulted in 16%
|
|
# improvement on Cortex A8 core and ~17 cycles per processed byte.
|
|
|
|
while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
|
|
open STDOUT,">$output";
|
|
|
|
$ctx="r0"; $t0="r0";
|
|
$inp="r1"; $t3="r1";
|
|
$len="r2"; $t1="r2";
|
|
$T1="r3";
|
|
$A="r4";
|
|
$B="r5";
|
|
$C="r6";
|
|
$D="r7";
|
|
$E="r8";
|
|
$F="r9";
|
|
$G="r10";
|
|
$H="r11";
|
|
@V=($A,$B,$C,$D,$E,$F,$G,$H);
|
|
$t2="r12";
|
|
$Ktbl="r14";
|
|
|
|
@Sigma0=( 2,13,22);
|
|
@Sigma1=( 6,11,25);
|
|
@sigma0=( 7,18, 3);
|
|
@sigma1=(17,19,10);
|
|
|
|
sub BODY_00_15 {
|
|
my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_;
|
|
|
|
$code.=<<___ if ($i<16);
|
|
#if __ARM_ARCH__>=7
|
|
ldr $T1,[$inp],#4
|
|
#else
|
|
ldrb $T1,[$inp,#3] @ $i
|
|
ldrb $t2,[$inp,#2]
|
|
ldrb $t1,[$inp,#1]
|
|
ldrb $t0,[$inp],#4
|
|
orr $T1,$T1,$t2,lsl#8
|
|
orr $T1,$T1,$t1,lsl#16
|
|
orr $T1,$T1,$t0,lsl#24
|
|
#endif
|
|
___
|
|
$code.=<<___;
|
|
mov $t0,$e,ror#$Sigma1[0]
|
|
ldr $t2,[$Ktbl],#4 @ *K256++
|
|
eor $t0,$t0,$e,ror#$Sigma1[1]
|
|
eor $t1,$f,$g
|
|
#if $i>=16
|
|
add $T1,$T1,$t3 @ from BODY_16_xx
|
|
#elif __ARM_ARCH__>=7 && defined(__ARMEL__)
|
|
rev $T1,$T1
|
|
#endif
|
|
#if $i==15
|
|
str $inp,[sp,#17*4] @ leave room for $t3
|
|
#endif
|
|
eor $t0,$t0,$e,ror#$Sigma1[2] @ Sigma1(e)
|
|
and $t1,$t1,$e
|
|
str $T1,[sp,#`$i%16`*4]
|
|
add $T1,$T1,$t0
|
|
eor $t1,$t1,$g @ Ch(e,f,g)
|
|
add $T1,$T1,$h
|
|
mov $h,$a,ror#$Sigma0[0]
|
|
add $T1,$T1,$t1
|
|
eor $h,$h,$a,ror#$Sigma0[1]
|
|
add $T1,$T1,$t2
|
|
eor $h,$h,$a,ror#$Sigma0[2] @ Sigma0(a)
|
|
#if $i>=15
|
|
ldr $t3,[sp,#`($i+2)%16`*4] @ from BODY_16_xx
|
|
#endif
|
|
orr $t0,$a,$b
|
|
and $t1,$a,$b
|
|
and $t0,$t0,$c
|
|
add $h,$h,$T1
|
|
orr $t0,$t0,$t1 @ Maj(a,b,c)
|
|
add $d,$d,$T1
|
|
add $h,$h,$t0
|
|
___
|
|
}
|
|
|
|
sub BODY_16_XX {
|
|
my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_;
|
|
|
|
$code.=<<___;
|
|
@ ldr $t3,[sp,#`($i+1)%16`*4] @ $i
|
|
ldr $t2,[sp,#`($i+14)%16`*4]
|
|
mov $t0,$t3,ror#$sigma0[0]
|
|
ldr $T1,[sp,#`($i+0)%16`*4]
|
|
eor $t0,$t0,$t3,ror#$sigma0[1]
|
|
ldr $t1,[sp,#`($i+9)%16`*4]
|
|
eor $t0,$t0,$t3,lsr#$sigma0[2] @ sigma0(X[i+1])
|
|
mov $t3,$t2,ror#$sigma1[0]
|
|
add $T1,$T1,$t0
|
|
eor $t3,$t3,$t2,ror#$sigma1[1]
|
|
add $T1,$T1,$t1
|
|
eor $t3,$t3,$t2,lsr#$sigma1[2] @ sigma1(X[i+14])
|
|
@ add $T1,$T1,$t3
|
|
___
|
|
&BODY_00_15(@_);
|
|
}
|
|
|
|
$code=<<___;
|
|
#include "arm_arch.h"
|
|
|
|
.text
|
|
.code 32
|
|
|
|
.type K256,%object
|
|
.align 5
|
|
K256:
|
|
.word 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
|
|
.word 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
|
|
.word 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
|
|
.word 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
|
|
.word 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
|
|
.word 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
|
|
.word 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
|
|
.word 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
|
|
.word 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
|
|
.word 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
|
|
.word 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
|
|
.word 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
|
|
.word 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
|
|
.word 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
|
|
.word 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
|
|
.word 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
|
|
.size K256,.-K256
|
|
|
|
.global sha256_block_data_order
|
|
.type sha256_block_data_order,%function
|
|
sha256_block_data_order:
|
|
sub r3,pc,#8 @ sha256_block_data_order
|
|
add $len,$inp,$len,lsl#6 @ len to point at the end of inp
|
|
stmdb sp!,{$ctx,$inp,$len,r4-r11,lr}
|
|
ldmia $ctx,{$A,$B,$C,$D,$E,$F,$G,$H}
|
|
sub $Ktbl,r3,#256 @ K256
|
|
sub sp,sp,#16*4 @ alloca(X[16])
|
|
.Loop:
|
|
___
|
|
for($i=0;$i<16;$i++) { &BODY_00_15($i,@V); unshift(@V,pop(@V)); }
|
|
$code.=".Lrounds_16_xx:\n";
|
|
for (;$i<32;$i++) { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); }
|
|
$code.=<<___;
|
|
and $t2,$t2,#0xff
|
|
cmp $t2,#0xf2
|
|
bne .Lrounds_16_xx
|
|
|
|
ldr $T1,[sp,#16*4] @ pull ctx
|
|
ldr $t0,[$T1,#0]
|
|
ldr $t1,[$T1,#4]
|
|
ldr $t2,[$T1,#8]
|
|
add $A,$A,$t0
|
|
ldr $t0,[$T1,#12]
|
|
add $B,$B,$t1
|
|
ldr $t1,[$T1,#16]
|
|
add $C,$C,$t2
|
|
ldr $t2,[$T1,#20]
|
|
add $D,$D,$t0
|
|
ldr $t0,[$T1,#24]
|
|
add $E,$E,$t1
|
|
ldr $t1,[$T1,#28]
|
|
add $F,$F,$t2
|
|
ldr $inp,[sp,#17*4] @ pull inp
|
|
ldr $t2,[sp,#18*4] @ pull inp+len
|
|
add $G,$G,$t0
|
|
add $H,$H,$t1
|
|
stmia $T1,{$A,$B,$C,$D,$E,$F,$G,$H}
|
|
cmp $inp,$t2
|
|
sub $Ktbl,$Ktbl,#256 @ rewind Ktbl
|
|
bne .Loop
|
|
|
|
add sp,sp,#`16+3`*4 @ destroy frame
|
|
#if __ARM_ARCH__>=5
|
|
ldmia sp!,{r4-r11,pc}
|
|
#else
|
|
ldmia sp!,{r4-r11,lr}
|
|
tst lr,#1
|
|
moveq pc,lr @ be binary compatible with V4, yet
|
|
bx lr @ interoperable with Thumb ISA:-)
|
|
#endif
|
|
.size sha256_block_data_order,.-sha256_block_data_order
|
|
.asciz "SHA256 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
|
|
.align 2
|
|
___
|
|
|
|
$code =~ s/\`([^\`]*)\`/eval $1/gem;
|
|
$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4
|
|
print $code;
|
|
close STDOUT; # enforce flush
|