--- /dev/null
+#!/usr/bin/env perl
+#
+# ====================================================================
+# Written by Andy Polyakov, @dot-asm, initially for use with OpenSSL.
+# ====================================================================
+#
+# ChaCha20 for Itanium.
+#
+# March 2019
+#
+# Itanium 9xxx, which has pair of shifters, manages to process one byte
+# in 9.3 cycles. This aligns perfectly with theoretical estimate.
+# On the other hand, pre-9000 CPU has single shifter and each extr/dep
+# pairs below takes additional cycle. Then final input->xor->output
+# pass runs slower than expected... Overall result is 15.6 cpb, two
+# cycles more than theoretical estimate.
+
+$output = pop;
+open STDOUT, ">$output" if $output;
+
+my @k = map("r$_",(16..31));
+my @x = map("r$_",(38..53));
+my @y = map("r$_",(8..11));
+my @z = map("r$_",(15,35..37));
+my ($out,$inp,$len,$key,$counter) = map("r$_",(32..36));
+
+$code.=<<___;
+#if defined(_HPUX_SOURCE)
+# if !defined(_LP64)
+# define ADDP addp4
+# else
+# define ADDP add
+# endif
+#else
+# define ADDP add
+#endif
+
+.text
+
+.global ChaCha20_ctr32#
+.proc ChaCha20_ctr32#
+.align 32
+ChaCha20_ctr32:
+ .prologue
+ .save ar.pfs,r2
+{ .mmi; alloc r2=ar.pfs,5,17,0,0
+ ADDP @k[11]=4,$key
+ .save ar.lc,r3
+ mov r3=ar.lc }
+{ .mmi; ADDP $key=0,$key
+ ADDP $counter=0,$counter
+ .save pr,r14
+ mov r14=pr };;
+
+ .body
+{ .mlx; ld4 @k[4]=[$key],8
+ movl @k[0]=0x61707865 }
+{ .mlx; ld4 @k[5]=[@k[11]],8
+ movl @k[1]=0x3320646e };;
+{ .mlx; ld4 @k[6]=[$key],8
+ movl @k[2]=0x79622d32 }
+{ .mlx; ld4 @k[7]=[@k[11]],8
+ movl @k[3]=0x6b206574 };;
+{ .mmi; ld4 @k[8]=[$key],8
+ ld4 @k[9]=[@k[11]],8
+ add @k[15]=4,$counter };;
+{ .mmi; ld4 @k[10]=[$key]
+ ld4 @k[11]=[@k[11]]
+ mov @x[0]=@k[0] };;
+{ .mmi; ld4 @k[12]=[$counter],8
+ ld4 @k[13]=[@k[15]],8
+ mov @x[1]=@k[1] };;
+{ .mmi; ld4 @k[14]=[$counter]
+ ld4 @k[15]=[@k[15]]
+ mov @x[2]=@k[2] }
+{ .mmi; mov @x[3]=@k[3]
+ mov @x[4]=@k[4]
+ mov @x[5]=@k[5] };;
+{ .mmi; mov @x[6]=@k[6]
+ mov @x[7]=@k[7]
+ mov @x[8]=@k[8] }
+{ .mmi; mov @x[9]=@k[9]
+ mov @x[10]=@k[10]
+ mov @x[11]=@k[11] }
+{ .mmi; mov @x[12]=@k[12]
+ mov @x[13]=@k[13]
+ mov @x[14]=@k[14] };;
+
+.Loop_outer:
+{ .mii; mov @x[15]=@k[15]
+ mov ar.lc=9
+ mov ar.ec=1 }
+{ .mmb; cmp.geu p6,p0=64,$len
+ sub @z[1]=64,$len
+ brp.loop.imp .Loop_top,.Loop_end-16 };;
+
+.Loop_top:
+___
+sub ROUND {
+my ($a0,$b0,$c0,$d0)=@_;
+my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
+my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
+my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
+
+$code.=<<___;
+{ .mmi; add @x[$a0]=@x[$a0],@x[$b0]
+ add @x[$a1]=@x[$a1],@x[$b1]
+ add @x[$a2]=@x[$a2],@x[$b2] };;
+{ .mmi; add @x[$a3]=@x[$a3],@x[$b3]
+ xor @x[$d0]=@x[$d0],@x[$a0]
+ xor @x[$d1]=@x[$d1],@x[$a1] };;
+{ .mmi; xor @x[$d2]=@x[$d2],@x[$a2]
+ xor @x[$d3]=@x[$d3],@x[$a3]
+ extr.u @y[0]=@x[$d0],16,16 };;
+{ .mii; extr.u @y[1]=@x[$d1],16,16
+ dep @x[$d0]=@x[$d0],@y[0],16,16 };;
+{ .mii; add @x[$c0]=@x[$c0],@x[$d0]
+ extr.u @y[2]=@x[$d2],16,16
+ dep @x[$d1]=@x[$d1],@y[1],16,16 };;
+{ .mii; add @x[$c1]=@x[$c1],@x[$d1]
+ xor @x[$b0]=@x[$b0],@x[$c0]
+ extr.u @y[3]=@x[$d3],16,16 };;
+{ .mii; xor @x[$b1]=@x[$b1],@x[$c1]
+ dep @x[$d2]=@x[$d2],@y[2],16,16
+ dep @x[$d3]=@x[$d3],@y[3],16,16 };;
+{ .mmi; add @x[$c2]=@x[$c2],@x[$d2]
+ add @x[$c3]=@x[$c3],@x[$d3]
+ extr.u @y[0]=@x[$b0],20,12 };;
+{ .mmi; xor @x[$b2]=@x[$b2],@x[$c2]
+ xor @x[$b3]=@x[$b3],@x[$c3]
+ dep.z @x[$b0]=@x[$b0],12,20 };;
+{ .mii; or @x[$b0]=@x[$b0],@y[0]
+ extr.u @y[1]=@x[$b1],20,12
+ dep.z @x[$b1]=@x[$b1],12,20 };;
+{ .mii; add @x[$a0]=@x[$a0],@x[$b0]
+ extr.u @y[2]=@x[$b2],20,12
+ extr.u @y[3]=@x[$b3],20,12 }
+{ .mii; or @x[$b1]=@x[$b1],@y[1]
+ dep.z @x[$b2]=@x[$b2],12,20
+ dep.z @x[$b3]=@x[$b3],12,20 };;
+{ .mmi; or @x[$b2]=@x[$b2],@y[2]
+ or @x[$b3]=@x[$b3],@y[3]
+ add @x[$a1]=@x[$a1],@x[$b1] };;
+{ .mmi; add @x[$a2]=@x[$a2],@x[$b2]
+ add @x[$a3]=@x[$a3],@x[$b3]
+ xor @x[$d0]=@x[$d0],@x[$a0] };;
+{ .mii; xor @x[$d1]=@x[$d1],@x[$a1]
+ extr.u @y[0]=@x[$d0],24,8
+ dep.z @x[$d0]=@x[$d0],8,24 };;
+{ .mii; or @x[$d0]=@x[$d0],@y[0]
+ extr.u @y[1]=@x[$d1],24,8
+ dep.z @x[$d1]=@x[$d1],8,24 };;
+{ .mmi; or @x[$d1]=@x[$d1],@y[1]
+ xor @x[$d2]=@x[$d2],@x[$a2]
+ xor @x[$d3]=@x[$d3],@x[$a3] };;
+{ .mii; add @x[$c0]=@x[$c0],@x[$d0]
+ extr.u @y[2]=@x[$d2],24,8
+ dep.z @x[$d2]=@x[$d2],8,24 };;
+{ .mii; xor @x[$b0]=@x[$b0],@x[$c0]
+ extr.u @y[3]=@x[$d3],24,8
+ dep.z @x[$d3]=@x[$d3],8,24 };;
+{ .mmi; or @x[$d2]=@x[$d2],@y[2]
+ or @x[$d3]=@x[$d3],@y[3]
+ extr.u @y[0]=@x[$b0],25,7 };;
+{ .mmi; add @x[$c1]=@x[$c1],@x[$d1]
+ add @x[$c2]=@x[$c2],@x[$d2]
+ dep.z @x[$b0]=@x[$b0],7,25 };;
+{ .mmi; xor @x[$b1]=@x[$b1],@x[$c1]
+ xor @x[$b2]=@x[$b2],@x[$c2]
+ add @x[$c3]=@x[$c3],@x[$d3] };;
+{ .mii; xor @x[$b3]=@x[$b3],@x[$c3]
+ extr.u @y[1]=@x[$b1],25,7
+ dep.z @x[$b1]=@x[$b1],7,25 };;
+{ .mii; or @x[$b0]=@x[$b0],@y[0]
+ extr.u @y[2]=@x[$b2],25,7
+ dep.z @x[$b2]=@x[$b2],7,25 };;
+{ .mii; or @x[$b1]=@x[$b1],@y[1]
+ extr.u @y[3]=@x[$b3],25,7
+ dep.z @x[$b3]=@x[$b3],7,25 };;
+___
+$code.=<<___ if ($d0 == 12);
+{ .mmi; or @x[$b2]=@x[$b2],@y[2]
+ or @x[$b3]=@x[$b3],@y[3]
+ mov @z[0]=-1 };;
+___
+$code.=<<___ if ($d0 == 15);
+{ .mmb; or @x[$b2]=@x[$b2],@y[2]
+ or @x[$b3]=@x[$b3],@y[3]
+ br.ctop.sptk .Loop_top };;
+___
+}
+ &ROUND(0, 4, 8, 12);
+ &ROUND(0, 5, 10, 15);
+$code.=<<___;
+.Loop_end:
+
+{ .mmi; add @x[0]=@x[0],@k[0]
+ add @x[1]=@x[1],@k[1]
+(p6) shr.u @z[0]=@z[0],@z[1] }
+{ .mmb; add @x[2]=@x[2],@k[2]
+ add @x[3]=@x[3],@k[3]
+ clrrrb.pr };;
+{ .mmi; add @x[4]=@x[4],@k[4]
+ add @x[5]=@x[5],@k[5]
+ add @x[6]=@x[6],@k[6] }
+{ .mmi; add @x[7]=@x[7],@k[7]
+ add @x[8]=@x[8],@k[8]
+ add @x[9]=@x[9],@k[9] }
+{ .mmi; add @x[10]=@x[10],@k[10]
+ add @x[11]=@x[11],@k[11]
+ add @x[12]=@x[12],@k[12] }
+{ .mmi; add @x[13]=@x[13],@k[13]
+ add @x[14]=@x[14],@k[14]
+ add @x[15]=@x[15],@k[15] }
+{ .mmi; add @k[12]=1,@k[12] // next counter
+ mov pr=@z[0],0x1ffff };;
+
+//////////////////////////////////////////////////////////////////
+// Each predicate bit corresponds to byte to be processed. Note
+// that p0 is wired to 1, but it works out, because there always
+// is at least one byte to process...
+{ .mmi; (p0) ld1 @z[0]=[$inp],1
+ shr.u @y[1]=@x[0],8 };;
+{ .mmi; (p1) ld1 @z[1]=[$inp],1
+ (p2) shr.u @y[2]=@x[0],16 };;
+{ .mmi; (p2) ld1 @z[2]=[$inp],1
+ (p0) xor @z[0]=@z[0],@x[0]
+ (p3) shr.u @y[3]=@x[0],24 };;
+___
+for(my $i0=0; $i0<60; $i0+=4) {
+my ($i1, $i2, $i3, $i4, $i5, $i6, $i7) = map($i0+$_,(1..7));
+my $k = $i0/4+1;
+
+$code.=<<___;
+{ .mmi; (p$i3) ld1 @z[3]=[$inp],1
+ (p$i0) st1 [$out]=@z[0],1
+ (p$i1) xor @z[1]=@z[1],@y[1] };;
+{ .mmi; (p$i4) ld1 @z[0]=[$inp],1
+ (p$i5) shr.u @y[1]=@x[$k],8 }
+{ .mmi; (p$i1) st1 [$out]=@z[1],1
+ (p$i2) xor @z[2]=@z[2],@y[2]
+ (p1) mov @x[$k-1]=@k[$k-1] };;
+{ .mfi; (p$i5) ld1 @z[1]=[$inp],1
+ (p$i6) shr.u @y[2]=@x[$k],16 }
+{ .mfi; (p$i2) st1 [$out]=@z[2],1
+ (p$i3) xor @z[3]=@z[3],@y[3] };;
+{ .mfi; (p$i6) ld1 @z[2]=[$inp],1
+ (p$i7) shr.u @y[3]=@x[$k],24 }
+___
+$code.=<<___ if ($i0==0); # p1,p2 are available for reuse in first round
+{ .mmi; (p$i3) st1 [$out]=@z[3],1
+ (p$i4) xor @z[0]=@z[0],@x[$k]
+ cmp.ltu p1,p2=64,$len };;
+___
+$code.=<<___ if ($i0>0);
+{ .mfi; (p$i3) st1 [$out]=@z[3],1
+ (p$i4) xor @z[0]=@z[0],@x[$k] };;
+___
+}
+$code.=<<___;
+{ .mmi; (p63) ld1 @z[3]=[$inp],1
+ (p60) st1 [$out]=@z[0],1
+ (p61) xor @z[1]=@z[1],@y[1] };;
+{ .mmi; (p61) st1 [$out]=@z[1],1
+ (p62) xor @z[2]=@z[2],@y[2] };;
+{ .mmi; (p62) st1 [$out]=@z[2],1
+ (p63) xor @z[3]=@z[3],@y[3]
+ (p2) mov ar.lc=r3 };;
+{ .mib; (p63) st1 [$out]=@z[3],1
+ (p1) add $len=-64,$len
+(p1) br.dptk.many .Loop_outer };;
+
+{ .mmi; mov @k[4]=0 // wipe key material
+ mov @k[5]=0
+ mov @k[6]=0 }
+{ .mmi; mov @k[7]=0
+ mov @k[8]=0
+ mov @k[9]=0 }
+{ .mmi; mov @k[10]=0
+ mov @k[11]=0
+ mov @k[12]=0 }
+{ .mmi; mov @k[13]=0
+ mov @k[14]=0
+ mov @k[15]=0 }
+{ .mib; mov pr=r14,0x1ffff
+ br.ret.sptk.many b0 };;
+.endp ChaCha20_ctr32#
+stringz "ChaCha20 for IA64, CRYPTOGAMS by \@dot-asm"
+___
+
+print $code;
+close STDOUT;
--- /dev/null
+// ====================================================================
+// Written by Andy Polyakov, @dot-asm, initially for use in the OpenSSL
+// project.
+// ====================================================================
+//
+// Poly1305 for Itanium.
+//
+// January 2019
+//
+// Performance was reported to be ~2.1 cycles per byte on Itanium 2.
+// With exception for processors in 95xx family, which have higher
+// floating-point instructions' latencies and deliver ~2.6 cpb.
+// Comparison to compiler-generated code is not exactly fair, because
+// of different radixes. But just for reference, it was observed to be
+// >3x faster. Originally it was argued that floating-point base 2^32
+// implementation would be optimal. Upon closer look estimate for below
+// integer base 2^64 implementation turned to be approximately same on
+// Itanium 2. But floating-point code would be larger, and have higher
+// overhead, which would negatively affect small-block performance...
+
+#if defined(_HPUX_SOURCE)
+# if !defined(_LP64)
+# define ADDP addp4
+# else
+# define ADDP add
+# endif
+# define RUM rum
+# define SUM sum
+#else
+# define ADDP add
+# define RUM nop
+# define SUM nop
+#endif
+
+.text
+.explicit
+
+.global poly1305_init#
+.proc poly1305_init#
+.align 64
+poly1305_init:
+ .prologue
+ .save ar.pfs,r2
+{ .mmi; alloc r2=ar.pfs,2,0,0,0
+ cmp.eq p6,p7=0,r33 } // key == NULL?
+{ .mmi; ADDP r9=8,r32
+ ADDP r10=16,r32
+ ADDP r32=0,r32 };;
+ .body
+{ .mmi; st8 [r32]=r0,24 // ctx->h0 = 0
+ st8 [r9]=r0 // ctx->h1 = 0
+(p7) ADDP r8=0,r33 }
+{ .mib; st8 [r10]=r0 // ctx->h2 = 0
+(p6) mov r8=0
+(p6) br.ret.spnt b0 };;
+
+{ .mmi; ADDP r9=1,r33
+ ADDP r10=2,r33
+ ADDP r11=3,r33 };;
+{ .mmi; ld1 r16=[r8],4 // load key, little-endian
+ ld1 r17=[r9],4 }
+{ .mmi; ld1 r18=[r10],4
+ ld1 r19=[r11],4 };;
+{ .mmi; ld1 r20=[r8],4
+ ld1 r21=[r9],4 }
+{ .mmi; ld1 r22=[r10],4
+ ld1 r23=[r11],4
+ and r19=15,r19 };;
+{ .mmi; ld1 r24=[r8],4
+ ld1 r25=[r9],4
+ and r20=-4,r20 }
+{ .mmi; ld1 r26=[r10],4
+ ld1 r27=[r11],4
+ and r23=15,r23 };;
+{ .mmi; ld1 r28=[r8],4
+ ld1 r29=[r9],4
+ and r24=-4,r24 }
+{ .mmi; ld1 r30=[r10],4
+ ld1 r31=[r11],4
+ and r27=15,r27 };;
+
+{ .mii; and r28=-4,r28
+ dep r16=r17,r16,8,8
+ dep r18=r19,r18,8,8 };;
+{ .mii; and r31=15,r31
+ dep r16=r18,r16,16,16
+ dep r20=r21,r20,8,8 };;
+{ .mii; dep r16=r20,r16,32,16
+ dep r22=r23,r22,8,8 };;
+{ .mii; dep r16=r22,r16,48,16
+ dep r24=r25,r24,8,8 };;
+{ .mii; dep r26=r27,r26,8,8
+ dep r28=r29,r28,8,8 };;
+{ .mii; dep r24=r26,r24,16,16
+ dep r30=r31,r30,8,8 };;
+{ .mii; st8 [r32]=r16,8 // ctx->r0
+ dep r24=r28,r24,32,16;;
+ dep r24=r30,r24,48,16 };;
+{ .mii; st8 [r32]=r24,8 // ctx->r1
+ shr.u r25=r24,2;;
+ add r25=r25,r24 };;
+{ .mib; st8 [r32]=r25 // ctx->s1
+ mov r8=0
+ br.ret.sptk b0 };;
+.endp poly1305_init#
+
+h0=r17; h1=r18; h2=r19;
+i0=r20; i1=r21;
+HF0=f8; HF1=f9; HF2=f10;
+RF0=f11; RF1=f12; SF1=f13;
+
+.global poly1305_blocks#
+.proc poly1305_blocks#
+.align 64
+poly1305_blocks:
+ .prologue
+ .save ar.pfs,r2
+{ .mii; alloc r2=ar.pfs,4,1,0,0
+ .save ar.lc,r3
+ mov r3=ar.lc
+ .save pr,r36
+ mov r36=pr }
+
+ .body
+{ .mmi; ADDP r8=0,r32
+ ADDP r9=8,r32
+ and r29=7,r33 };;
+{ .mmi; ld8 h0=[r8],16
+ ld8 h1=[r9],16
+ and r33=-8,r33 };;
+{ .mmi; ld8 h2=[r8],16
+ ldf8 RF0=[r9],16
+ shr.u r34=r34,4 };;
+{ .mmi; ldf8 RF1=[r8],-32
+ ldf8 SF1=[r9],-32
+ cmp.ltu p16,p17=1,r34 };;
+{ .mmi;
+(p16) add r34=-2,r34
+(p17) mov r34=0
+ ADDP r10=0,r33 }
+{ .mii; ADDP r11=8,r33
+(p16) mov ar.ec=2
+(p17) mov ar.ec=1 };;
+{ .mib; RUM 1<<1 // go little-endian
+ mov ar.lc=r34
+ brp.loop.imp .Loop,.Lcend-16 }
+
+{ .mmi; cmp.eq p8,p7=0,r29
+ cmp.eq p9,p0=1,r29
+ cmp.eq p10,p0=2,r29 }
+{ .mmi; cmp.eq p11,p0=3,r29
+ cmp.eq p12,p0=4,r29
+ cmp.eq p13,p0=5,r29 }
+{ .mmi; cmp.eq p14,p0=6,r29
+ cmp.eq p15,p0=7,r29
+ add r16=16,r10 };;
+
+{ .mmb;
+(p8) ld8 i0=[r10],16 // aligned input
+(p8) ld8 i1=[r11],16
+(p8) br.cond.sptk .Loop };;
+
+ // align first block
+ .pred.rel "mutex",p8,p9,p10,p11,p12,p13,p14,p15
+{ .mmi; (p7) ld8 r14=[r10],24
+ (p7) ld8 r15=[r11],24 }
+
+{ .mii; (p7) ld8 r16=[r16]
+ nop.i 0;;
+ (p15) shrp i0=r15,r14,56 }
+{ .mii; (p15) shrp i1=r16,r15,56
+ (p14) shrp i0=r15,r14,48 }
+{ .mii; (p14) shrp i1=r16,r15,48
+ (p13) shrp i0=r15,r14,40 }
+{ .mii; (p13) shrp i1=r16,r15,40
+ (p12) shrp i0=r15,r14,32 }
+{ .mii; (p12) shrp i1=r16,r15,32
+ (p11) shrp i0=r15,r14,24 }
+{ .mii; (p11) shrp i1=r16,r15,24
+ (p10) shrp i0=r15,r14,16 }
+{ .mii; (p10) shrp i1=r16,r15,16
+ (p9) shrp i0=r15,r14,8 }
+{ .mii; (p9) shrp i1=r16,r15,8
+ mov r14=r16 };;
+
+.Loop:
+ .pred.rel "mutex",p8,p9,p10,p11,p12,p13,p14,p15
+{ .mmi; add h0=h0,i0
+ add h1=h1,i1
+ add h2=h2,r35 };;
+{ .mmi; setf.sig HF0=h0
+ cmp.ltu p6,p0=h0,i0
+ cmp.ltu p7,p0=h1,i1 };;
+{ .mmi; (p6) add h1=1,h1;;
+ setf.sig HF1=h1
+ (p6) cmp.eq.or p7,p0=0,h1 };;
+{ .mmi; (p7) add h2=1,h2;;
+ setf.sig HF2=h2 };;
+
+{ .mfi; (p16) ld8 r15=[r10],16
+ xmpy.lu f32=HF0,RF0 }
+{ .mfi; (p16) ld8 r16=[r11],16
+ xmpy.hu f33=HF0,RF0 }
+{ .mfi; xmpy.lu f36=HF0,RF1 }
+{ .mfi; xmpy.hu f37=HF0,RF1 };;
+{ .mfi; xmpy.lu f34=HF1,SF1
+ (p15) shrp i0=r15,r14,56 }
+{ .mfi; xmpy.hu f35=HF1,SF1 }
+{ .mfi; xmpy.lu f38=HF1,RF0
+ (p15) shrp i1=r16,r15,56 }
+{ .mfi; xmpy.hu f39=HF1,RF0 }
+{ .mfi; xmpy.lu f40=HF2,SF1
+ (p14) shrp i0=r15,r14,48 }
+{ .mfi; xmpy.lu f41=HF2,RF0 };;
+
+{ .mmi; getf.sig r22=f32
+ getf.sig r23=f33
+ (p14) shrp i1=r16,r15,48 }
+{ .mmi; getf.sig r24=f34
+ getf.sig r25=f35
+ (p13) shrp i0=r15,r14,40 }
+{ .mmi; getf.sig r26=f36
+ getf.sig r27=f37
+ (p13) shrp i1=r16,r15,40 }
+{ .mmi; getf.sig r28=f38
+ getf.sig r29=f39
+ (p12) shrp i0=r15,r14,32 }
+{ .mmi; getf.sig r30=f40
+ getf.sig r31=f41 };;
+
+{ .mmi; add h0=r22,r24
+ add r23=r23,r25
+ (p12) shrp i1=r16,r15,32 }
+{ .mmi; add h1=r26,r28
+ add r27=r27,r29
+ (p11) shrp i0=r15,r14,24 };;
+{ .mmi; cmp.ltu p6,p0=h0,r24
+ cmp.ltu p7,p0=h1,r28
+ add r23=r23,r30 };;
+{ .mmi; (p6) add r23=1,r23
+ (p7) add r27=1,r27
+ (p11) shrp i1=r16,r15,24 };;
+{ .mmi; add h1=h1,r23;;
+ cmp.ltu p6,p7=h1,r23
+ (p10) shrp i0=r15,r14,16 };;
+{ .mmi; (p6) add h2=r31,r27,1
+ (p7) add h2=r31,r27
+ (p10) shrp i1=r16,r15,16 };;
+
+{ .mmi; (p8) mov i0=r15
+ and r22=-4,h2
+ shr.u r23=h2,2 };;
+{ .mmi; add r22=r22,r23
+ and h2=3,h2
+ (p9) shrp i0=r15,r14,8 };;
+
+{ .mmi; add h0=h0,r22;;
+ cmp.ltu p6,p0=h0,r22
+ (p9) shrp i1=r16,r15,8 };;
+{ .mmi; (p8) mov i1=r16
+ (p6) cmp.eq.unc p7,p0=-1,h1
+ (p6) add h1=1,h1 };;
+{ .mmb; (p7) add h2=1,h2
+ mov r14=r16
+ br.ctop.sptk .Loop };;
+.Lcend:
+
+{ .mii; SUM 1<<1 // back to big-endian
+ mov ar.lc=r3 };;
+
+{ .mmi; st8 [r8]=h0,16
+ st8 [r9]=h1
+ mov pr=r36,0x1ffff };;
+{ .mmb; st8 [r8]=h2
+ rum 1<<5
+ br.ret.sptk b0 };;
+.endp poly1305_blocks#
+
+.global poly1305_emit#
+.proc poly1305_emit#
+.align 64
+poly1305_emit:
+ .prologue
+ .save ar.pfs,r2
+{ .mmi; alloc r2=ar.pfs,3,0,0,0
+ ADDP r8=0,r32
+ ADDP r9=8,r32 };;
+
+ .body
+{ .mmi; ld8 r16=[r8],16 // load hash
+ ld8 r17=[r9]
+ ADDP r10=0,r34 };;
+{ .mmi; ld8 r18=[r8]
+ ld4 r24=[r10],8 // load nonce
+ ADDP r11=4,r34 };;
+
+{ .mmi; ld4 r25=[r11],8
+ ld4 r26=[r10]
+ add r20=5,r16 };;
+
+{ .mmi; ld4 r27=[r11]
+ cmp.ltu p6,p7=r20,r16
+ shl r25=r25,32 };;
+{ .mmi;
+(p6) add r21=1,r17
+(p7) add r21=0,r17
+(p6) cmp.eq.or.andcm p6,p7=-1,r17 };;
+{ .mmi;
+(p6) add r22=1,r18
+(p7) add r22=0,r18
+ shl r27=r27,32 };;
+{ .mmi; or r24=r24,r25
+ or r26=r26,r27
+ cmp.leu p6,p7=4,r22 };;
+{ .mmi;
+(p6) add r16=r20,r24
+(p7) add r16=r16,r24
+(p6) add r17=r21,r26 };;
+{ .mii;
+(p7) add r17=r17,r26
+ cmp.ltu p6,p7=r16,r24;;
+(p6) add r17=1,r17 };;
+
+{ .mmi; ADDP r8=0,r33
+ ADDP r9=4,r33
+ shr.u r20=r16,32 }
+{ .mmi; ADDP r10=8,r33
+ ADDP r11=12,r33
+ shr.u r21=r17,32 };;
+
+{ .mmi; st1 [r8]=r16,1 // write mac, little-endian
+ st1 [r9]=r20,1
+ shr.u r16=r16,8 }
+{ .mii; st1 [r10]=r17,1
+ shr.u r20=r20,8
+ shr.u r17=r17,8 }
+{ .mmi; st1 [r11]=r21,1
+ shr.u r21=r21,8 };;
+
+{ .mmi; st1 [r8]=r16,1
+ st1 [r9]=r20,1
+ shr.u r16=r16,8 }
+{ .mii; st1 [r10]=r17,1
+ shr.u r20=r20,8
+ shr.u r17=r17,8 }
+{ .mmi; st1 [r11]=r21,1
+ shr.u r21=r21,8 };;
+
+{ .mmi; st1 [r8]=r16,1
+ st1 [r9]=r20,1
+ shr.u r16=r16,8 }
+{ .mii; st1 [r10]=r17,1
+ shr.u r20=r20,8
+ shr.u r17=r17,8 }
+{ .mmi; st1 [r11]=r21,1
+ shr.u r21=r21,8 };;
+
+{ .mmi; st1 [r8]=r16
+ st1 [r9]=r20 }
+{ .mmb; st1 [r10]=r17
+ st1 [r11]=r21
+ br.ret.sptk b0 };;
+.endp poly1305_emit#
+
+stringz "Poly1305 for IA64, CRYPTOGAMS by \@dot-asm"
projects / oweals / openssl.git / commitdiff