# C[5] held in register bank and D[5] offloaded to memory. Though
# instead of actually unrolling the loop pair-wise I simply flip
# pointers to T[][] and A[][] and the end of round. Since number of
-# rounds is even last round writes to A[][] and everything works out.
+# rounds is even, last round writes to A[][] and everything works out.
+# It's argued that MMX is the only code path meaningful to implement
+# for x86. This is because non-MMX-capable processors is an extinct
+# breed, and they as well can lurk executing compiler-generated code.
+# For reference gcc-5.x-generated KECCAK_2X code takes 89 cycles per
+# processed byte on Pentium. Which is fair result. But older compilers
+# produce worse code. On the other hand one can wonder why not 128-bit
+# SSE2? Well, SSE2 won't provide double improvement, rather far from
+# that, if any at all on some processors, because it will take extra
+# permutations and inter-bank data trasfers. Besides, contemporary
+# CPUs are better off executing 64-bit code, and it makes lesser sense
+# to invest into fancy 32-bit code. And the decision doesn't seem to
+# be inadequate, if one compares below results to "64-bit platforms in
+# 32-bit mode" SIMD data points available at
+# http://keccak.noekeon.org/sw_performance.html.
#
########################################################################
# Numbers are cycles per processed byte out of large message.
#
# r=1088(i)
#
-# PIII 31
-# Pentium M 27
-# P4 42
-# Core 2 20
-# Sandy Bridge(ii) 18
-# Atom 37
-# Silvermont(ii) 80(iv)
-# VIA Nano(ii) 44
-# Sledgehammer(ii)(iii) 25
+# PIII 30/+150%
+# Pentium M 27/+150%
+# P4 40/+85%
+# Core 2 19/+170%
+# Sandy Bridge(ii) 18/+140%
+# Atom 33/+180%
+# Silvermont(ii) 30/+180%
+# VIA Nano(ii) 43/+60%
+# Sledgehammer(ii)(iii) 24/+130%
#
-# (i) Corresponds to SHA3-256.
+# (i) Corresponds to SHA3-256. Numbers after slash are improvement
+# coefficients over KECCAK_2X [with bit interleave and lane
+# complementing] position-independent *scalar* code generated
+# by gcc-5.x. It's not exactly fair comparison, but it's a
+# datapoint...
# (ii) 64-bit processor executing 32-bit code.
# (iii) Result is considered to be representative even for older AMD
# processors.
-# (iv) This seems to be some processor anomaly. Successor doesn't
-# have this problem...
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
push(@INC,"${dir}","${dir}../../perlasm");
&pxor (@C[3],&QWP($A[2][3],"esi"));
&pxor (@C[4],&QWP($A[2][4],"esi"));
+ &pxor (@C[2],&QWP($A[3][2],"esi"));
&pxor (@C[0],&QWP($A[3][0],"esi"));
&pxor (@C[1],&QWP($A[3][1],"esi"));
- &pxor (@C[2],&QWP($A[3][2],"esi"));
&pxor (@C[3],&QWP($A[3][3],"esi"));
+ &movq (@T[0],@C[2]);
&pxor (@C[4],&QWP($A[3][4],"esi"));
- &movq (@T[0],@C[2]);
- &movq (@T[2],@C[2]);
- &psrlq (@T[0],63);
- &psllq (@T[2],1);
- &pxor (@T[0],@C[0]);
- &pxor (@T[0],@T[2]);
- &movq (&QWP(@D[1],"esp"),@T[0]); # D[1] = E[0] = ROL64(C[2], 1) ^ C[0];
-
+ &movq (@T[2],@C[2]);
+ &psrlq (@T[0],63);
&movq (@T[1],@C[0]);
+ &psllq (@T[2],1);
+ &pxor (@T[0],@C[0]);
&psrlq (@C[0],63);
+ &pxor (@T[0],@T[2]);
&psllq (@T[1],1);
+ &movq (@T[2],@C[1]);
+ &movq (&QWP(@D[1],"esp"),@T[0]); # D[1] = E[0] = ROL64(C[2], 1) ^ C[0];
+
&pxor (@T[1],@C[0]);
+ &psrlq (@T[2],63);
&pxor (@T[1],@C[3]);
+ &movq (@C[0],@C[1]);
&movq (&QWP(@D[4],"esp"),@T[1]); # D[4] = E[1] = ROL64(C[0], 1) ^ C[3];
- &movq (@C[0],@C[1]);
- &movq (@T[2],@C[1]);
- &psrlq (@C[0],63);
- &psllq (@T[2],1);
- &pxor (@C[0],@C[4]);
- &pxor (@C[0],@T[2]);
- &movq (&QWP(@D[0],"esp"),@C[0]); # D[0] = C[0] = ROL64(C[1], 1) ^ C[4];
+ &psllq (@C[0],1);
+ &pxor (@T[2],@C[4]);
+ &pxor (@C[0],@T[2]);
&movq (@T[2],@C[3]);
&psrlq (@C[3],63);
+ &movq (&QWP(@D[0],"esp"),@C[0]); # D[0] = C[0] = ROL64(C[1], 1) ^ C[4];
&psllq (@T[2],1);
+ &movq (@T[0],@C[4]);
+ &psrlq (@C[4],63);
&pxor (@C[1],@C[3]);
+ &psllq (@T[0],1);
&pxor (@C[1],@T[2]);
+ &pxor (@C[2],@C[4]);
&movq (&QWP(@D[2],"esp"),@C[1]); # D[2] = C[1] = ROL64(C[3], 1) ^ C[1];
+ &pxor (@C[2],@T[0]);
- &movq (@T[2],@C[4]);
- &psrlq (@C[4],63);
- &psllq (@T[2],1);
- &pxor (@C[2],@C[4]);
- &pxor (@C[2],@T[2]);
- &movq (&QWP(@D[3],"esp"),@C[2]); # D[3] = C[2] = ROL64(C[4], 1) ^ C[2];
-
- ######################################### first Rho step is special
+ ######################################### first Rho(0) is special
&movq (@C[3],&QWP($A[3][3],"esi"));
+ &movq (&QWP(@D[3],"esp"),@C[2]); # D[3] = C[2] = ROL64(C[4], 1) ^ C[2];
&pxor (@C[3],@C[2]);
+ &movq (@C[4],&QWP($A[4][4],"esi"));
&movq (@T[2],@C[3]);
&psrlq (@C[3],64-$rhotates[3][3]);
+ &pxor (@C[4],@T[1]);
&psllq (@T[2],$rhotates[3][3]);
+ &movq (@T[1],@C[4]);
+ &psrlq (@C[4],64-$rhotates[4][4]);
&por (@C[3],@T[2]); # C[3] = ROL64(A[3][3] ^ C[2], rhotates[3][3]); /* D[3] */
-
- &movq (@C[4],&QWP($A[4][4],"esi"));
- &pxor (@C[4],@T[1]);
- &movq (@T[2],@C[4]);
- &psrlq (@C[4],64-$rhotates[4][4]);
- &psllq (@T[2],$rhotates[4][4]);
- &por (@C[4],@T[2]); # C[4] = ROL64(A[4][4] ^ E[1], rhotates[4][4]); /* D[4] */
-
- &pxor (@C[0],&QWP($A[0][0],"esi")); # /* rotate by 0 */ /* D[0] */
+ &psllq (@T[1],$rhotates[4][4]);
&movq (@C[2],&QWP($A[2][2],"esi"));
+ &por (@C[4],@T[1]); # C[4] = ROL64(A[4][4] ^ E[1], rhotates[4][4]); /* D[4] */
&pxor (@C[2],@C[1]);
+ &movq (@C[1],&QWP($A[1][1],"esi"));
&movq (@T[1],@C[2]);
&psrlq (@C[2],64-$rhotates[2][2]);
+ &pxor (@C[1],&QWP(@D[1],"esp"));
&psllq (@T[1],$rhotates[2][2]);
- &por (@C[2],@T[1]); # C[2] = ROL64(A[2][2] ^ C[1], rhotates[2][2]); /* D[2] */
- &movq (@C[1],&QWP($A[1][1],"esi"));
- &pxor (@C[1],@T[0]);
- &movq (@T[2],@C[1]);
- &psrlq (@C[1],64-$rhotates[1][1]);
- &psllq (@T[2],$rhotates[1][1]);
- &por (@C[1],@T[2]); # C[1] = ROL64(A[1][1] ^ E[0], rhotates[1][1]); /* D[1] */
+ &movq (@T[2],@C[1]);
+ &psrlq (@C[1],64-$rhotates[1][1]);
+ &por (@C[2],@T[1]); # C[2] = ROL64(A[2][2] ^ C[1], rhotates[2][2]); /* D[2] */
+ &psllq (@T[2],$rhotates[1][1]);
+ &pxor (@C[0],&QWP($A[0][0],"esi")); # /* rotate by 0 */ /* D[0] */
+ &por (@C[1],@T[2]); # C[1] = ROL64(A[1][1] ^ D[1], rhotates[1][1]);
sub Chi() { ######### regular Chi step
- my $y = shift;
+ my ($y,$xrho) = @_;
&movq (@T[0],@C[1]);
+ &movq (@T[1],@C[2]);
&pandn (@T[0],@C[2]);
+ &pandn (@C[2],@C[3]);
&pxor (@T[0],@C[0]);
+ &pxor (@C[2],@C[1]);
&pxor (@T[0],&QWP(0,"ebx")) if ($y == 0);
&lea ("ebx",&DWP(8,"ebx")) if ($y == 0);
- &movq (&QWP($A[$y][0],"edi"),@T[0]); # R[0][0] = C[0] ^ (~C[1] & C[2]) ^ iotas[i];
-
- &movq (@T[1],@C[2]);
- &pandn (@T[1],@C[3]);
- &pxor (@T[1],@C[1]);
- &movq (&QWP($A[$y][1],"edi"),@T[1]); # R[0][1] = C[1] ^ (~C[2] & C[3]);
&movq (@T[2],@C[3]);
- &pandn (@T[2],@C[4]);
- &pxor (@T[2],@C[2]);
- &movq (&QWP($A[$y][2],"edi"),@T[2]); # R[0][2] = C[2] ^ (~C[3] & C[4]);
-
- &movq (@T[0],@C[4]);
- &pandn (@T[0],@C[0]);
- &pxor (@T[0],@C[3]);
- &movq (&QWP($A[$y][3],"edi"),@T[0]); # R[0][3] = C[3] ^ (~C[4] & C[0]);
-
- &movq (@T[1],@C[0]);
- &pandn (@T[1],@C[1]);
- &pxor (@T[1],@C[4]);
- &movq (&QWP($A[$y][4],"edi"),@T[1]); # R[0][4] = C[4] ^ (~C[0] & C[1]);
+ &movq (&QWP($A[$y][0],"edi"),@T[0]); # R[0][0] = C[0] ^ (~C[1] & C[2]) ^ iotas[i];
+ &movq (@T[0],@C[4]);
+ &pandn (@C[3],@C[4]);
+ &pandn (@C[4],@C[0]);
+ &pxor (@C[3],@T[1]);
+ &movq (&QWP($A[$y][1],"edi"),@C[2]); # R[0][1] = C[1] ^ (~C[2] & C[3]);
+ &pxor (@C[4],@T[2]);
+ &movq (@T[2],&QWP($A[0][$xrho],"esi")) if (defined($xrho));
+
+ &movq (&QWP($A[$y][2],"edi"),@C[3]); # R[0][2] = C[2] ^ (~C[3] & C[4]);
+ &pandn (@C[0],@C[1]);
+ &movq (&QWP($A[$y][3],"edi"),@C[4]); # R[0][3] = C[3] ^ (~C[4] & C[0]);
+ &pxor (@C[0],@T[0]);
+ &pxor (@T[2],&QWP(@D[$xrho],"esp")) if (defined($xrho));
+ &movq (&QWP($A[$y][4],"edi"),@C[0]); # R[0][4] = C[4] ^ (~C[0] & C[1]);
}
- &Chi (0);
+ &Chi (0, 3);
sub Rho() { ######### regular Rho step
my $x = shift;
- &movq (@C[0],&QWP($A[0][$x],"esi"));
- &pxor (@C[0],&QWP(@D[$x],"esp"));
- &movq (@T[0],@C[0]);
- &psrlq (@C[0],64-$rhotates[0][$x]);
- &psllq (@T[0],$rhotates[0][$x]);
- &por (@C[0],@T[0]); # C[0] = ROL64(A[0][3] ^ D[3], rhotates[0][3]);
-
- &movq (@C[1],&QWP($A[1][($x+1)%5],"esi"));
- &pxor (@C[1],&QWP(@D[($x+1)%5],"esp"));
- &movq (@T[1],@C[1]);
- &psrlq (@C[1],64-$rhotates[1][($x+1)%5]);
- &psllq (@T[1],$rhotates[1][($x+1)%5]);
- &por (@C[1],@T[1]); # C[1] = ROL64(A[1][4] ^ D[4], rhotates[1][4]);
-
+ #&movq (@T[2],&QWP($A[0][$x],"esi")); # moved to Chi
+ #&pxor (@T[2],&QWP(@D[$x],"esp")); # moved to Chi
+ &movq (@C[0],@T[2]);
+ &psrlq (@T[2],64-$rhotates[0][$x]);
+ &movq (@C[1],&QWP($A[1][($x+1)%5],"esi"));
+ &psllq (@C[0],$rhotates[0][$x]);
+ &pxor (@C[1],&QWP(@D[($x+1)%5],"esp"));
+ &por (@C[0],@T[2]); # C[0] = ROL64(A[0][3] ^ D[3], rhotates[0][3]);
+
+ &movq (@T[1],@C[1]);
+ &psrlq (@C[1],64-$rhotates[1][($x+1)%5]);
&movq (@C[2],&QWP($A[2][($x+2)%5],"esi"));
+ &psllq (@T[1],$rhotates[1][($x+1)%5]);
&pxor (@C[2],&QWP(@D[($x+2)%5],"esp"));
+ &por (@C[1],@T[1]); # C[1] = ROL64(A[1][4] ^ D[4], rhotates[1][4]);
+
&movq (@T[2],@C[2]);
&psrlq (@C[2],64-$rhotates[2][($x+2)%5]);
+ &movq (@C[3],&QWP($A[3][($x+3)%5],"esi"));
&psllq (@T[2],$rhotates[2][($x+2)%5]);
+ &pxor (@C[3],&QWP(@D[($x+3)%5],"esp"));
&por (@C[2],@T[2]); # C[2] = ROL64(A[2][0] ^ D[0], rhotates[2][0]);
- &movq (@C[3],&QWP($A[3][($x+3)%5],"esi"));
- &pxor (@C[3],&QWP(@D[($x+3)%5],"esp"));
- &movq (@T[0],@C[3]);
- &psrlq (@C[3],64-$rhotates[3][($x+3)%5]);
- &psllq (@T[0],$rhotates[3][($x+3)%5]);
- &por (@C[3],@T[0]); # C[3] = ROL64(A[3][1] ^ D[1], rhotates[3][1]);
-
+ &movq (@T[0],@C[3]);
+ &psrlq (@C[3],64-$rhotates[3][($x+3)%5]);
&movq (@C[4],&QWP($A[4][($x+4)%5],"esi"));
+ &psllq (@T[0],$rhotates[3][($x+3)%5]);
&pxor (@C[4],&QWP(@D[($x+4)%5],"esp"));
+ &por (@C[3],@T[0]); # C[3] = ROL64(A[3][1] ^ D[1], rhotates[3][1]);
+
&movq (@T[1],@C[4]);
&psrlq (@C[4],64-$rhotates[4][($x+4)%5]);
&psllq (@T[1],$rhotates[4][($x+4)%5]);
&por (@C[4],@T[1]); # C[4] = ROL64(A[4][2] ^ D[2], rhotates[4][2]);
}
- &Rho (3); &Chi (1);
- &Rho (1); &Chi (2);
- &Rho (4); &Chi (3);
- &Rho (2); #&Chi (4);
+ &Rho (3); &Chi (1, 1);
+ &Rho (1); &Chi (2, 4);
+ &Rho (4); &Chi (3, 2);
+ &Rho (2); ###&Chi (4);
&movq (@T[0],@C[0]); ######### last Chi(4) is special
+ &xor ("edi","esi"); # &xchg ("esi","edi");
&movq (&QWP(@D[1],"esp"),@C[1]);
+ &xor ("esi","edi");
+ &xor ("edi","esi");
&movq (@T[1],@C[1]);
+ &movq (@T[2],@C[2]);
&pandn (@T[1],@C[2]);
+ &pandn (@T[2],@C[3]);
&pxor (@C[0],@T[1]);
- &movq (&QWP($A[4][0],"edi"),@C[0]); # R[4][0] = C[0] ^= (~C[1] & C[2]);
-
- &movq (@T[2],@C[2]);
- &pandn (@T[2],@C[3]);
- &pxor (@C[1],@T[2]);
- &movq (&QWP($A[4][1],"edi"),@C[1]); # R[4][1] = C[1] ^= (~C[2] & C[3]);
+ &pxor (@C[1],@T[2]);
&movq (@T[1],@C[3]);
+ &movq (&QWP($A[4][0],"esi"),@C[0]); # R[4][0] = C[0] ^= (~C[1] & C[2]);
&pandn (@T[1],@C[4]);
+ &movq (&QWP($A[4][1],"esi"),@C[1]); # R[4][1] = C[1] ^= (~C[2] & C[3]);
&pxor (@C[2],@T[1]);
- &movq (&QWP($A[4][2],"edi"),@C[2]); # R[4][2] = C[2] ^= (~C[3] & C[4]);
+ &movq (@T[2],@C[4]);
+ &movq (&QWP($A[4][2],"esi"),@C[2]); # R[4][2] = C[2] ^= (~C[3] & C[4]);
- &movq (@T[2],@C[4]);
&pandn (@T[2],@T[0]);
+ &pandn (@T[0],&QWP(@D[1],"esp"));
&pxor (@C[3],@T[2]);
- &movq (&QWP($A[4][3],"edi"),@C[3]); # R[4][3] = C[3] ^= (~C[4] & D[0]);
-
- &pandn (@T[0],&QWP(@D[1],"esp"));
- &pxor (@C[4],@T[0]);
- &movq (&QWP($A[4][4],"edi"),@C[4]); # R[4][4] = C[4] ^= (~D[0] & D[1]);
-
- &xchg ("esi","edi");
- &dec ("ecx");
+ &pxor (@C[4],@T[0]);
+ &movq (&QWP($A[4][3],"esi"),@C[3]); # R[4][3] = C[3] ^= (~C[4] & D[0]);
+ &sub ("ecx",1);
+ &movq (&QWP($A[4][4],"esi"),@C[4]); # R[4][4] = C[4] ^= (~D[0] & D[1]);
&jnz (&label("loop"));
&lea ("ebx",&DWP(-192,"ebx")); # rewind iotas
projects / oweals / openssl.git / commitdiff