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godot/drivers/builtin_openssl2/crypto/sha/asm/sha512-ppc.pl

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#!/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/.
# ====================================================================
# I let hardware handle unaligned input, except on page boundaries
# (see below for details). Otherwise straightforward implementation
# with X vector in register bank. The module is big-endian [which is
# not big deal as there're no little-endian targets left around].
# sha256 | sha512
# -m64 -m32 | -m64 -m32
# --------------------------------------+-----------------------
# PPC970,gcc-4.0.0 +50% +38% | +40% +410%(*)
# Power6,xlc-7 +150% +90% | +100% +430%(*)
#
# (*) 64-bit code in 32-bit application context, which actually is
# on TODO list. It should be noted that for safe deployment in
# 32-bit *mutli-threaded* context asyncronous signals should be
# blocked upon entry to SHA512 block routine. This is because
# 32-bit signaling procedure invalidates upper halves of GPRs.
# Context switch procedure preserves them, but not signaling:-(
# Second version is true multi-thread safe. Trouble with the original
# version was that it was using thread local storage pointer register.
# Well, it scrupulously preserved it, but the problem would arise the
# moment asynchronous signal was delivered and signal handler would
# dereference the TLS pointer. While it's never the case in openssl
# application or test suite, we have to respect this scenario and not
# use TLS pointer register. Alternative would be to require caller to
# block signals prior calling this routine. For the record, in 32-bit
# context R2 serves as TLS pointer, while in 64-bit context - R13.
$flavour=shift;
$output =shift;
if ($flavour =~ /64/) {
$SIZE_T=8;
$LRSAVE=2*$SIZE_T;
$STU="stdu";
$UCMP="cmpld";
$SHL="sldi";
$POP="ld";
$PUSH="std";
} elsif ($flavour =~ /32/) {
$SIZE_T=4;
$LRSAVE=$SIZE_T;
$STU="stwu";
$UCMP="cmplw";
$SHL="slwi";
$POP="lwz";
$PUSH="stw";
} else { die "nonsense $flavour"; }
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
die "can't locate ppc-xlate.pl";
open STDOUT,"| $^X $xlate $flavour $output" || die "can't call $xlate: $!";
if ($output =~ /512/) {
$func="sha512_block_data_order";
$SZ=8;
@Sigma0=(28,34,39);
@Sigma1=(14,18,41);
@sigma0=(1, 8, 7);
@sigma1=(19,61, 6);
$rounds=80;
$LD="ld";
$ST="std";
$ROR="rotrdi";
$SHR="srdi";
} else {
$func="sha256_block_data_order";
$SZ=4;
@Sigma0=( 2,13,22);
@Sigma1=( 6,11,25);
@sigma0=( 7,18, 3);
@sigma1=(17,19,10);
$rounds=64;
$LD="lwz";
$ST="stw";
$ROR="rotrwi";
$SHR="srwi";
}
$FRAME=32*$SIZE_T+16*$SZ;
$LOCALS=6*$SIZE_T;
$sp ="r1";
$toc="r2";
$ctx="r3"; # zapped by $a0
$inp="r4"; # zapped by $a1
$num="r5"; # zapped by $t0
$T ="r0";
$a0 ="r3";
$a1 ="r4";
$t0 ="r5";
$t1 ="r6";
$Tbl="r7";
$A ="r8";
$B ="r9";
$C ="r10";
$D ="r11";
$E ="r12";
$F ="r13"; $F="r2" if ($SIZE_T==8);# reassigned to exempt TLS pointer
$G ="r14";
$H ="r15";
@V=($A,$B,$C,$D,$E,$F,$G,$H);
@X=("r16","r17","r18","r19","r20","r21","r22","r23",
"r24","r25","r26","r27","r28","r29","r30","r31");
$inp="r31"; # reassigned $inp! aliases with @X[15]
sub ROUND_00_15 {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
$code.=<<___;
$LD $T,`$i*$SZ`($Tbl)
$ROR $a0,$e,$Sigma1[0]
$ROR $a1,$e,$Sigma1[1]
and $t0,$f,$e
andc $t1,$g,$e
add $T,$T,$h
xor $a0,$a0,$a1
$ROR $a1,$a1,`$Sigma1[2]-$Sigma1[1]`
or $t0,$t0,$t1 ; Ch(e,f,g)
add $T,$T,@X[$i]
xor $a0,$a0,$a1 ; Sigma1(e)
add $T,$T,$t0
add $T,$T,$a0
$ROR $a0,$a,$Sigma0[0]
$ROR $a1,$a,$Sigma0[1]
and $t0,$a,$b
and $t1,$a,$c
xor $a0,$a0,$a1
$ROR $a1,$a1,`$Sigma0[2]-$Sigma0[1]`
xor $t0,$t0,$t1
and $t1,$b,$c
xor $a0,$a0,$a1 ; Sigma0(a)
add $d,$d,$T
xor $t0,$t0,$t1 ; Maj(a,b,c)
add $h,$T,$a0
add $h,$h,$t0
___
}
sub ROUND_16_xx {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
$i-=16;
$code.=<<___;
$ROR $a0,@X[($i+1)%16],$sigma0[0]
$ROR $a1,@X[($i+1)%16],$sigma0[1]
$ROR $t0,@X[($i+14)%16],$sigma1[0]
$ROR $t1,@X[($i+14)%16],$sigma1[1]
xor $a0,$a0,$a1
$SHR $a1,@X[($i+1)%16],$sigma0[2]
xor $t0,$t0,$t1
$SHR $t1,@X[($i+14)%16],$sigma1[2]
add @X[$i],@X[$i],@X[($i+9)%16]
xor $a0,$a0,$a1 ; sigma0(X[(i+1)&0x0f])
xor $t0,$t0,$t1 ; sigma1(X[(i+14)&0x0f])
add @X[$i],@X[$i],$a0
add @X[$i],@X[$i],$t0
___
&ROUND_00_15($i,$a,$b,$c,$d,$e,$f,$g,$h);
}
$code=<<___;
.machine "any"
.text
.globl $func
.align 6
$func:
$STU $sp,-$FRAME($sp)
mflr r0
$SHL $num,$num,`log(16*$SZ)/log(2)`
$PUSH $ctx,`$FRAME-$SIZE_T*22`($sp)
$PUSH $toc,`$FRAME-$SIZE_T*20`($sp)
$PUSH r13,`$FRAME-$SIZE_T*19`($sp)
$PUSH r14,`$FRAME-$SIZE_T*18`($sp)
$PUSH r15,`$FRAME-$SIZE_T*17`($sp)
$PUSH r16,`$FRAME-$SIZE_T*16`($sp)
$PUSH r17,`$FRAME-$SIZE_T*15`($sp)
$PUSH r18,`$FRAME-$SIZE_T*14`($sp)
$PUSH r19,`$FRAME-$SIZE_T*13`($sp)
$PUSH r20,`$FRAME-$SIZE_T*12`($sp)
$PUSH r21,`$FRAME-$SIZE_T*11`($sp)
$PUSH r22,`$FRAME-$SIZE_T*10`($sp)
$PUSH r23,`$FRAME-$SIZE_T*9`($sp)
$PUSH r24,`$FRAME-$SIZE_T*8`($sp)
$PUSH r25,`$FRAME-$SIZE_T*7`($sp)
$PUSH r26,`$FRAME-$SIZE_T*6`($sp)
$PUSH r27,`$FRAME-$SIZE_T*5`($sp)
$PUSH r28,`$FRAME-$SIZE_T*4`($sp)
$PUSH r29,`$FRAME-$SIZE_T*3`($sp)
$PUSH r30,`$FRAME-$SIZE_T*2`($sp)
$PUSH r31,`$FRAME-$SIZE_T*1`($sp)
$PUSH r0,`$FRAME+$LRSAVE`($sp)
$LD $A,`0*$SZ`($ctx)
mr $inp,r4 ; incarnate $inp
$LD $B,`1*$SZ`($ctx)
$LD $C,`2*$SZ`($ctx)
$LD $D,`3*$SZ`($ctx)
$LD $E,`4*$SZ`($ctx)
$LD $F,`5*$SZ`($ctx)
$LD $G,`6*$SZ`($ctx)
$LD $H,`7*$SZ`($ctx)
bl LPICmeup
LPICedup:
andi. r0,$inp,3
bne Lunaligned
Laligned:
add $num,$inp,$num
$PUSH $num,`$FRAME-$SIZE_T*24`($sp) ; end pointer
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
bl Lsha2_block_private
b Ldone
; PowerPC specification allows an implementation to be ill-behaved
; upon unaligned access which crosses page boundary. "Better safe
; than sorry" principle makes me treat it specially. But I don't
; look for particular offending word, but rather for the input
; block which crosses the boundary. Once found that block is aligned
; and hashed separately...
.align 4
Lunaligned:
subfic $t1,$inp,4096
andi. $t1,$t1,`4096-16*$SZ` ; distance to closest page boundary
beq Lcross_page
$UCMP $num,$t1
ble- Laligned ; didn't cross the page boundary
subfc $num,$t1,$num
add $t1,$inp,$t1
$PUSH $num,`$FRAME-$SIZE_T*25`($sp) ; save real remaining num
$PUSH $t1,`$FRAME-$SIZE_T*24`($sp) ; intermediate end pointer
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
bl Lsha2_block_private
; $inp equals to the intermediate end pointer here
$POP $num,`$FRAME-$SIZE_T*25`($sp) ; restore real remaining num
Lcross_page:
li $t1,`16*$SZ/4`
mtctr $t1
addi r20,$sp,$LOCALS ; aligned spot below the frame
Lmemcpy:
lbz r16,0($inp)
lbz r17,1($inp)
lbz r18,2($inp)
lbz r19,3($inp)
addi $inp,$inp,4
stb r16,0(r20)
stb r17,1(r20)
stb r18,2(r20)
stb r19,3(r20)
addi r20,r20,4
bdnz Lmemcpy
$PUSH $inp,`$FRAME-$SIZE_T*26`($sp) ; save real inp
addi $t1,$sp,`$LOCALS+16*$SZ` ; fictitious end pointer
addi $inp,$sp,$LOCALS ; fictitious inp pointer
$PUSH $num,`$FRAME-$SIZE_T*25`($sp) ; save real num
$PUSH $t1,`$FRAME-$SIZE_T*24`($sp) ; end pointer
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
bl Lsha2_block_private
$POP $inp,`$FRAME-$SIZE_T*26`($sp) ; restore real inp
$POP $num,`$FRAME-$SIZE_T*25`($sp) ; restore real num
addic. $num,$num,`-16*$SZ` ; num--
bne- Lunaligned
Ldone:
$POP r0,`$FRAME+$LRSAVE`($sp)
$POP $toc,`$FRAME-$SIZE_T*20`($sp)
$POP r13,`$FRAME-$SIZE_T*19`($sp)
$POP r14,`$FRAME-$SIZE_T*18`($sp)
$POP r15,`$FRAME-$SIZE_T*17`($sp)
$POP r16,`$FRAME-$SIZE_T*16`($sp)
$POP r17,`$FRAME-$SIZE_T*15`($sp)
$POP r18,`$FRAME-$SIZE_T*14`($sp)
$POP r19,`$FRAME-$SIZE_T*13`($sp)
$POP r20,`$FRAME-$SIZE_T*12`($sp)
$POP r21,`$FRAME-$SIZE_T*11`($sp)
$POP r22,`$FRAME-$SIZE_T*10`($sp)
$POP r23,`$FRAME-$SIZE_T*9`($sp)
$POP r24,`$FRAME-$SIZE_T*8`($sp)
$POP r25,`$FRAME-$SIZE_T*7`($sp)
$POP r26,`$FRAME-$SIZE_T*6`($sp)
$POP r27,`$FRAME-$SIZE_T*5`($sp)
$POP r28,`$FRAME-$SIZE_T*4`($sp)
$POP r29,`$FRAME-$SIZE_T*3`($sp)
$POP r30,`$FRAME-$SIZE_T*2`($sp)
$POP r31,`$FRAME-$SIZE_T*1`($sp)
mtlr r0
addi $sp,$sp,$FRAME
blr
.long 0
.byte 0,12,4,1,0x80,18,3,0
.long 0
.align 4
Lsha2_block_private:
___
for($i=0;$i<16;$i++) {
$code.=<<___ if ($SZ==4);
lwz @X[$i],`$i*$SZ`($inp)
___
# 64-bit loads are split to 2x32-bit ones, as CPU can't handle
# unaligned 64-bit loads, only 32-bit ones...
$code.=<<___ if ($SZ==8);
lwz $t0,`$i*$SZ`($inp)
lwz @X[$i],`$i*$SZ+4`($inp)
insrdi @X[$i],$t0,32,0
___
&ROUND_00_15($i,@V);
unshift(@V,pop(@V));
}
$code.=<<___;
li $T,`$rounds/16-1`
mtctr $T
.align 4
Lrounds:
addi $Tbl,$Tbl,`16*$SZ`
___
for(;$i<32;$i++) {
&ROUND_16_xx($i,@V);
unshift(@V,pop(@V));
}
$code.=<<___;
bdnz- Lrounds
$POP $ctx,`$FRAME-$SIZE_T*22`($sp)
$POP $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
$POP $num,`$FRAME-$SIZE_T*24`($sp) ; end pointer
subi $Tbl,$Tbl,`($rounds-16)*$SZ` ; rewind Tbl
$LD r16,`0*$SZ`($ctx)
$LD r17,`1*$SZ`($ctx)
$LD r18,`2*$SZ`($ctx)
$LD r19,`3*$SZ`($ctx)
$LD r20,`4*$SZ`($ctx)
$LD r21,`5*$SZ`($ctx)
$LD r22,`6*$SZ`($ctx)
addi $inp,$inp,`16*$SZ` ; advance inp
$LD r23,`7*$SZ`($ctx)
add $A,$A,r16
add $B,$B,r17
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp)
add $C,$C,r18
$ST $A,`0*$SZ`($ctx)
add $D,$D,r19
$ST $B,`1*$SZ`($ctx)
add $E,$E,r20
$ST $C,`2*$SZ`($ctx)
add $F,$F,r21
$ST $D,`3*$SZ`($ctx)
add $G,$G,r22
$ST $E,`4*$SZ`($ctx)
add $H,$H,r23
$ST $F,`5*$SZ`($ctx)
$ST $G,`6*$SZ`($ctx)
$UCMP $inp,$num
$ST $H,`7*$SZ`($ctx)
bne Lsha2_block_private
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
___
# Ugly hack here, because PPC assembler syntax seem to vary too
# much from platforms to platform...
$code.=<<___;
.align 6
LPICmeup:
mflr r0
bcl 20,31,\$+4
mflr $Tbl ; vvvvvv "distance" between . and 1st data entry
addi $Tbl,$Tbl,`64-8`
mtlr r0
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
.space `64-9*4`
___
$code.=<<___ if ($SZ==8);
.long 0x428a2f98,0xd728ae22,0x71374491,0x23ef65cd
.long 0xb5c0fbcf,0xec4d3b2f,0xe9b5dba5,0x8189dbbc
.long 0x3956c25b,0xf348b538,0x59f111f1,0xb605d019
.long 0x923f82a4,0xaf194f9b,0xab1c5ed5,0xda6d8118
.long 0xd807aa98,0xa3030242,0x12835b01,0x45706fbe
.long 0x243185be,0x4ee4b28c,0x550c7dc3,0xd5ffb4e2
.long 0x72be5d74,0xf27b896f,0x80deb1fe,0x3b1696b1
.long 0x9bdc06a7,0x25c71235,0xc19bf174,0xcf692694
.long 0xe49b69c1,0x9ef14ad2,0xefbe4786,0x384f25e3
.long 0x0fc19dc6,0x8b8cd5b5,0x240ca1cc,0x77ac9c65
.long 0x2de92c6f,0x592b0275,0x4a7484aa,0x6ea6e483
.long 0x5cb0a9dc,0xbd41fbd4,0x76f988da,0x831153b5
.long 0x983e5152,0xee66dfab,0xa831c66d,0x2db43210
.long 0xb00327c8,0x98fb213f,0xbf597fc7,0xbeef0ee4
.long 0xc6e00bf3,0x3da88fc2,0xd5a79147,0x930aa725
.long 0x06ca6351,0xe003826f,0x14292967,0x0a0e6e70
.long 0x27b70a85,0x46d22ffc,0x2e1b2138,0x5c26c926
.long 0x4d2c6dfc,0x5ac42aed,0x53380d13,0x9d95b3df
.long 0x650a7354,0x8baf63de,0x766a0abb,0x3c77b2a8
.long 0x81c2c92e,0x47edaee6,0x92722c85,0x1482353b
.long 0xa2bfe8a1,0x4cf10364,0xa81a664b,0xbc423001
.long 0xc24b8b70,0xd0f89791,0xc76c51a3,0x0654be30
.long 0xd192e819,0xd6ef5218,0xd6990624,0x5565a910
.long 0xf40e3585,0x5771202a,0x106aa070,0x32bbd1b8
.long 0x19a4c116,0xb8d2d0c8,0x1e376c08,0x5141ab53
.long 0x2748774c,0xdf8eeb99,0x34b0bcb5,0xe19b48a8
.long 0x391c0cb3,0xc5c95a63,0x4ed8aa4a,0xe3418acb
.long 0x5b9cca4f,0x7763e373,0x682e6ff3,0xd6b2b8a3
.long 0x748f82ee,0x5defb2fc,0x78a5636f,0x43172f60
.long 0x84c87814,0xa1f0ab72,0x8cc70208,0x1a6439ec
.long 0x90befffa,0x23631e28,0xa4506ceb,0xde82bde9
.long 0xbef9a3f7,0xb2c67915,0xc67178f2,0xe372532b
.long 0xca273ece,0xea26619c,0xd186b8c7,0x21c0c207
.long 0xeada7dd6,0xcde0eb1e,0xf57d4f7f,0xee6ed178
.long 0x06f067aa,0x72176fba,0x0a637dc5,0xa2c898a6
.long 0x113f9804,0xbef90dae,0x1b710b35,0x131c471b
.long 0x28db77f5,0x23047d84,0x32caab7b,0x40c72493
.long 0x3c9ebe0a,0x15c9bebc,0x431d67c4,0x9c100d4c
.long 0x4cc5d4be,0xcb3e42b6,0x597f299c,0xfc657e2a
.long 0x5fcb6fab,0x3ad6faec,0x6c44198c,0x4a475817
___
$code.=<<___ if ($SZ==4);
.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
___
$code =~ s/\`([^\`]*)\`/eval $1/gem;
print $code;
close STDOUT;
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