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+#!/usr/bin/env perl
+
+# ====================================================================
+# Written by Andy Polyakov <appro@openssl.org> 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/.
+# ====================================================================
+#
+# March 2010
+#
+# The module implements "4-bit" GCM GHASH function and underlying
+# single multiplication operation in GF(2^128). "4-bit" means that it
+# uses 256 bytes per-key table [+128 bytes shared table]. Streamed
+# GHASH performance was measured to be 6.67 cycles per processed byte
+# on Itanium 2, which is >90% better than Microsoft compiler generated
+# code. To anchor to something else sha1-ia64.pl module processes one
+# byte in 5.7 cycles. On Itanium GHASH should run at ~8.5 cycles per
+# byte.
+
+# September 2010
+#
+# It was originally thought that it makes lesser sense to implement
+# "528B" variant on Itanium 2 for following reason. Because number of
+# functional units is naturally limited, it appeared impossible to
+# implement "528B" loop in 4 cycles, only in 5. This would mean that
+# theoretically performance improvement couldn't be more than 20%.
+# But occasionally you prove yourself wrong:-) I figured out a way to
+# fold couple of instructions and having freed yet another instruction
+# slot by unrolling the loop... Resulting performance is 4.45 cycles
+# per processed byte and 50% better than "256B" version. On original
+# Itanium performance should remain the same as the "256B" version,
+# i.e. ~8.5 cycles.
+
+$output=shift and (open STDOUT,">$output" or die "can't open $output: $!");
+
+if ($^O eq "hpux") {
+ $ADDP="addp4";
+ for (@ARGV) { $ADDP="add" if (/[\+DD|\-mlp]64/); }
+} else { $ADDP="add"; }
+for (@ARGV) { $big_endian=1 if (/\-DB_ENDIAN/);
+ $big_endian=0 if (/\-DL_ENDIAN/); }
+if (!defined($big_endian))
+ { $big_endian=(unpack('L',pack('N',1))==1); }
+
+sub loop() {
+my $label=shift;
+my ($p16,$p17)=(shift)?("p63","p63"):("p16","p17"); # mask references to inp
+
+# Loop is scheduled for 6 ticks on Itanium 2 and 8 on Itanium, i.e.
+# in scalable manner;-) Naturally assuming data in L1 cache...
+# Special note about 'dep' instruction, which is used to construct
+# &rem_4bit[Zlo&0xf]. It works, because rem_4bit is aligned at 128
+# bytes boundary and lower 7 bits of its address are guaranteed to
+# be zero.
+$code.=<<___;
+$label:
+{ .mfi; (p18) ld8 Hlo=[Hi[1]],-8
+ (p19) dep rem=Zlo,rem_4bitp,3,4 }
+{ .mfi; (p19) xor Zhi=Zhi,Hhi
+ ($p17) xor xi[1]=xi[1],in[1] };;
+{ .mfi; (p18) ld8 Hhi=[Hi[1]]
+ (p19) shrp Zlo=Zhi,Zlo,4 }
+{ .mfi; (p19) ld8 rem=[rem]
+ (p18) and Hi[1]=mask0xf0,xi[2] };;
+{ .mmi; ($p16) ld1 in[0]=[inp],-1
+ (p18) xor Zlo=Zlo,Hlo
+ (p19) shr.u Zhi=Zhi,4 }
+{ .mib; (p19) xor Hhi=Hhi,rem
+ (p18) add Hi[1]=Htbl,Hi[1] };;
+
+{ .mfi; (p18) ld8 Hlo=[Hi[1]],-8
+ (p18) dep rem=Zlo,rem_4bitp,3,4 }
+{ .mfi; (p17) shladd Hi[0]=xi[1],4,r0
+ (p18) xor Zhi=Zhi,Hhi };;
+{ .mfi; (p18) ld8 Hhi=[Hi[1]]
+ (p18) shrp Zlo=Zhi,Zlo,4 }
+{ .mfi; (p18) ld8 rem=[rem]
+ (p17) and Hi[0]=mask0xf0,Hi[0] };;
+{ .mmi; (p16) ld1 xi[0]=[Xi],-1
+ (p18) xor Zlo=Zlo,Hlo
+ (p18) shr.u Zhi=Zhi,4 }
+{ .mib; (p18) xor Hhi=Hhi,rem
+ (p17) add Hi[0]=Htbl,Hi[0]
+ br.ctop.sptk $label };;
+___
+}
+
+$code=<<___;
+.explicit
+.text
+
+prevfs=r2; prevlc=r3; prevpr=r8;
+mask0xf0=r21;
+rem=r22; rem_4bitp=r23;
+Xi=r24; Htbl=r25;
+inp=r26; end=r27;
+Hhi=r28; Hlo=r29;
+Zhi=r30; Zlo=r31;
+
+.align 128
+.skip 16 // aligns loop body
+.global gcm_gmult_4bit#
+.proc gcm_gmult_4bit#
+gcm_gmult_4bit:
+ .prologue
+{ .mmi; .save ar.pfs,prevfs
+ alloc prevfs=ar.pfs,2,6,0,8
+ $ADDP Xi=15,in0 // &Xi[15]
+ mov rem_4bitp=ip }
+{ .mii; $ADDP Htbl=8,in1 // &Htbl[0].lo
+ .save ar.lc,prevlc
+ mov prevlc=ar.lc
+ .save pr,prevpr
+ mov prevpr=pr };;
+
+ .body
+ .rotr in[3],xi[3],Hi[2]
+
+{ .mib; ld1 xi[2]=[Xi],-1 // Xi[15]
+ mov mask0xf0=0xf0
+ brp.loop.imp .Loop1,.Lend1-16};;
+{ .mmi; ld1 xi[1]=[Xi],-1 // Xi[14]
+ };;
+{ .mii; shladd Hi[1]=xi[2],4,r0
+ mov pr.rot=0x7<<16
+ mov ar.lc=13 };;
+{ .mii; and Hi[1]=mask0xf0,Hi[1]
+ mov ar.ec=3
+ xor Zlo=Zlo,Zlo };;
+{ .mii; add Hi[1]=Htbl,Hi[1] // &Htbl[nlo].lo
+ add rem_4bitp=rem_4bit#-gcm_gmult_4bit#,rem_4bitp
+ xor Zhi=Zhi,Zhi };;
+___
+ &loop (".Loop1",1);
+$code.=<<___;
+.Lend1:
+{ .mib; xor Zhi=Zhi,Hhi };; // modulo-scheduling artefact
+{ .mib; mux1 Zlo=Zlo,\@rev };;
+{ .mib; mux1 Zhi=Zhi,\@rev };;
+{ .mmi; add Hlo=9,Xi;; // ;; is here to prevent
+ add Hhi=1,Xi };; // pipeline flush on Itanium
+{ .mib; st8 [Hlo]=Zlo
+ mov pr=prevpr,0x1ffff };;
+{ .mib; st8 [Hhi]=Zhi
+ mov ar.lc=prevlc
+ br.ret.sptk.many b0 };;
+.endp gcm_gmult_4bit#
+___
+
+######################################################################
+# "528B" (well, "512B" actualy) streamed GHASH
+#
+$Xip="in0";
+$Htbl="in1";
+$inp="in2";
+$len="in3";
+$rem_8bit="loc0";
+$mask0xff="loc1";
+($sum,$rum) = $big_endian ? ("nop.m","nop.m") : ("sum","rum");
+
+sub load_htable() {
+ for (my $i=0;$i<8;$i++) {
+ $code.=<<___;
+{ .mmi; ld8 r`16+2*$i+1`=[r8],16 // Htable[$i].hi
+ ld8 r`16+2*$i`=[r9],16 } // Htable[$i].lo
+{ .mmi; ldf8 f`32+2*$i+1`=[r10],16 // Htable[`8+$i`].hi
+ ldf8 f`32+2*$i`=[r11],16 // Htable[`8+$i`].lo
+___
+ $code.=shift if (($i+$#_)==7);
+ $code.="\t};;\n"
+ }
+}
+
+$code.=<<___;
+prevsp=r3;
+
+.align 32
+.skip 16 // aligns loop body
+.global gcm_ghash_4bit#
+.proc gcm_ghash_4bit#
+gcm_ghash_4bit:
+ .prologue
+{ .mmi; .save ar.pfs,prevfs
+ alloc prevfs=ar.pfs,4,2,0,0
+ .vframe prevsp
+ mov prevsp=sp
+ mov $rem_8bit=ip };;
+ .body
+{ .mfi; $ADDP r8=0+0,$Htbl
+ $ADDP r9=0+8,$Htbl }
+{ .mfi; $ADDP r10=128+0,$Htbl
+ $ADDP r11=128+8,$Htbl };;
+___
+ &load_htable(
+ " $ADDP $Xip=15,$Xip", # &Xi[15]
+ " $ADDP $len=$len,$inp", # &inp[len]
+ " $ADDP $inp=15,$inp", # &inp[15]
+ " mov $mask0xff=0xff",
+ " add sp=-512,sp",
+ " andcm sp=sp,$mask0xff", # align stack frame
+ " add r14=0,sp",
+ " add r15=8,sp");
+$code.=<<___;
+{ .mmi; $sum 1<<1 // go big-endian
+ add r8=256+0,sp
+ add r9=256+8,sp }
+{ .mmi; add r10=256+128+0,sp
+ add r11=256+128+8,sp
+ add $len=-17,$len };;
+___
+for($i=0;$i<8;$i++) { # generate first half of Hshr4[]
+my ($rlo,$rhi)=("r".eval(16+2*$i),"r".eval(16+2*$i+1));
+$code.=<<___;
+{ .mmi; st8 [r8]=$rlo,16 // Htable[$i].lo
+ st8 [r9]=$rhi,16 // Htable[$i].hi
+ shrp $rlo=$rhi,$rlo,4 }//;;
+{ .mmi; stf8 [r10]=f`32+2*$i`,16 // Htable[`8+$i`].lo
+ stf8 [r11]=f`32+2*$i+1`,16 // Htable[`8+$i`].hi
+ shr.u $rhi=$rhi,4 };;
+{ .mmi; st8 [r14]=$rlo,16 // Htable[$i].lo>>4
+ st8 [r15]=$rhi,16 }//;; // Htable[$i].hi>>4
+___
+}
+$code.=<<___;
+{ .mmi; ld8 r16=[r8],16 // Htable[8].lo
+ ld8 r17=[r9],16 };; // Htable[8].hi
+{ .mmi; ld8 r18=[r8],16 // Htable[9].lo
+ ld8 r19=[r9],16 } // Htable[9].hi
+{ .mmi; rum 1<<5 // clear um.mfh
+ shrp r16=r17,r16,4 };;
+___
+for($i=0;$i<6;$i++) { # generate second half of Hshr4[]
+$code.=<<___;
+{ .mmi; ld8 r`20+2*$i`=[r8],16 // Htable[`10+$i`].lo
+ ld8 r`20+2*$i+1`=[r9],16 // Htable[`10+$i`].hi
+ shr.u r`16+2*$i+1`=r`16+2*$i+1`,4 };;
+{ .mmi; st8 [r14]=r`16+2*$i`,16 // Htable[`8+$i`].lo>>4
+ st8 [r15]=r`16+2*$i+1`,16 // Htable[`8+$i`].hi>>4
+ shrp r`18+2*$i`=r`18+2*$i+1`,r`18+2*$i`,4 }
+___
+}
+$code.=<<___;
+{ .mmi; shr.u r`16+2*$i+1`=r`16+2*$i+1`,4 };;
+{ .mmi; st8 [r14]=r`16+2*$i`,16 // Htable[`8+$i`].lo>>4
+ st8 [r15]=r`16+2*$i+1`,16 // Htable[`8+$i`].hi>>4
+ shrp r`18+2*$i`=r`18+2*$i+1`,r`18+2*$i`,4 }
+{ .mmi; add $Htbl=256,sp // &Htable[0]
+ add $rem_8bit=rem_8bit#-gcm_ghash_4bit#,$rem_8bit
+ shr.u r`18+2*$i+1`=r`18+2*$i+1`,4 };;
+{ .mmi; st8 [r14]=r`18+2*$i` // Htable[`8+$i`].lo>>4
+ st8 [r15]=r`18+2*$i+1` } // Htable[`8+$i`].hi>>4
+___
+
+$in="r15";
+@xi=("r16","r17");
+@rem=("r18","r19");
+($Alo,$Ahi,$Blo,$Bhi,$Zlo,$Zhi)=("r20","r21","r22","r23","r24","r25");
+($Atbl,$Btbl)=("r26","r27");
+
+$code.=<<___; # (p16)
+{ .mmi; ld1 $in=[$inp],-1 //(p16) *inp--
+ ld1 $xi[0]=[$Xip],-1 //(p16) *Xi--
+ cmp.eq p0,p6=r0,r0 };; // clear p6
+___
+push (@xi,shift(@xi)); push (@rem,shift(@rem)); # "rotate" registers
+
+$code.=<<___; # (p16),(p17)
+{ .mmi; ld1 $xi[0]=[$Xip],-1 //(p16) *Xi--
+ xor $xi[1]=$xi[1],$in };; //(p17) xi=$xi[i]^inp[i]
+{ .mii; ld1 $in=[$inp],-1 //(p16) *inp--
+ dep $Atbl=$xi[1],$Htbl,4,4 //(p17) &Htable[nlo].lo
+ and $xi[1]=-16,$xi[1] };; //(p17) nhi=xi&0xf0
+.align 32
+.LOOP:
+{ .mmi;
+(p6) st8 [$Xip]=$Zhi,13
+ xor $Zlo=$Zlo,$Zlo
+ add $Btbl=$xi[1],$Htbl };; //(p17) &Htable[nhi].lo
+___
+push (@xi,shift(@xi)); push (@rem,shift(@rem)); # "rotate" registers
+
+$code.=<<___; # (p16),(p17),(p18)
+{ .mmi; ld8 $Alo=[$Atbl],8 //(p18) Htable[nlo].lo,&Htable[nlo].hi
+ ld8 $rem[0]=[$Btbl],-256 //(p18) Htable[nhi].lo,&Hshr4[nhi].lo
+ xor $xi[1]=$xi[1],$in };; //(p17) xi=$xi[i]^inp[i]
+{ .mfi; ld8 $Ahi=[$Atbl] //(p18) Htable[nlo].hi
+ dep $Atbl=$xi[1],$Htbl,4,4 } //(p17) &Htable[nlo].lo
+{ .mfi; shladd $rem[0]=$rem[0],4,r0 //(p18) Htable[nhi].lo<<4
+ xor $Zlo=$Zlo,$Alo };; //(p18) Z.lo^=Htable[nlo].lo
+{ .mmi; ld8 $Blo=[$Btbl],8 //(p18) Hshr4[nhi].lo,&Hshr4[nhi].hi
+ ld1 $in=[$inp],-1 } //(p16) *inp--
+{ .mmi; xor $rem[0]=$rem[0],$Zlo //(p18) Z.lo^(Htable[nhi].lo<<4)
+ mov $Zhi=$Ahi //(p18) Z.hi^=Htable[nlo].hi
+ and $xi[1]=-16,$xi[1] };; //(p17) nhi=xi&0xf0
+{ .mmi; ld8 $Bhi=[$Btbl] //(p18) Hshr4[nhi].hi
+ ld1 $xi[0]=[$Xip],-1 //(p16) *Xi--
+ shrp $Zlo=$Zhi,$Zlo,8 } //(p18) Z.lo=(Z.hi<<56)|(Z.lo>>8)
+{ .mmi; and $rem[0]=$rem[0],$mask0xff //(p18) rem=($Zlo^(Htable[nhi].lo<<4))&0xff
+ add $Btbl=$xi[1],$Htbl };; //(p17) &Htable[nhi]
+___
+push (@xi,shift(@xi)); push (@rem,shift(@rem)); # "rotate" registers
+
+for ($i=1;$i<14;$i++) {
+# Above and below fragments are derived from this one by removing
+# unsuitable (p??) instructions.
+$code.=<<___; # (p16),(p17),(p18),(p19)
+{ .mmi; ld8 $Alo=[$Atbl],8 //(p18) Htable[nlo].lo,&Htable[nlo].hi
+ ld8 $rem[0]=[$Btbl],-256 //(p18) Htable[nhi].lo,&Hshr4[nhi].lo
+ shr.u $Zhi=$Zhi,8 } //(p19) Z.hi>>=8
+{ .mmi; shladd $rem[1]=$rem[1],1,$rem_8bit //(p19) &rem_8bit[rem]
+ xor $Zlo=$Zlo,$Blo //(p19) Z.lo^=Hshr4[nhi].lo
+ xor $xi[1]=$xi[1],$in };; //(p17) xi=$xi[i]^inp[i]
+{ .mmi; ld8 $Ahi=[$Atbl] //(p18) Htable[nlo].hi
+ ld2 $rem[1]=[$rem[1]] //(p19) rem_8bit[rem]
+ dep $Atbl=$xi[1],$Htbl,4,4 } //(p17) &Htable[nlo].lo
+{ .mmi; shladd $rem[0]=$rem[0],4,r0 //(p18) Htable[nhi].lo<<4
+ xor $Zlo=$Zlo,$Alo //(p18) Z.lo^=Htable[nlo].lo
+ xor $Zhi=$Zhi,$Bhi };; //(p19) Z.hi^=Hshr4[nhi].hi
+{ .mmi; ld8 $Blo=[$Btbl],8 //(p18) Hshr4[nhi].lo,&Hshr4[nhi].hi
+ ld1 $in=[$inp],-1 //(p16) *inp--
+ shl $rem[1]=$rem[1],48 } //(p19) rem_8bit[rem]<<48
+{ .mmi; xor $rem[0]=$rem[0],$Zlo //(p18) Z.lo^(Htable[nhi].lo<<4)
+ xor $Zhi=$Zhi,$Ahi //(p18) Z.hi^=Htable[nlo].hi
+ and $xi[1]=-16,$xi[1] };; //(p17) nhi=xi&0xf0
+{ .mmi; ld8 $Bhi=[$Btbl] //(p18) Hshr4[nhi].hi
+ ld1 $xi[0]=[$Xip],-1 //(p16) *Xi--
+ shrp $Zlo=$Zhi,$Zlo,8 } //(p18) Z.lo=(Z.hi<<56)|(Z.lo>>8)
+{ .mmi; and $rem[0]=$rem[0],$mask0xff //(p18) rem=($Zlo^(Htable[nhi].lo<<4))&0xff
+ xor $Zhi=$Zhi,$rem[1] //(p19) Z.hi^=rem_8bit[rem]<<48
+ add $Btbl=$xi[1],$Htbl };; //(p17) &Htable[nhi]
+___
+push (@xi,shift(@xi)); push (@rem,shift(@rem)); # "rotate" registers
+}
+
+$code.=<<___; # (p17),(p18),(p19)
+{ .mmi; ld8 $Alo=[$Atbl],8 //(p18) Htable[nlo].lo,&Htable[nlo].hi
+ ld8 $rem[0]=[$Btbl],-256 //(p18) Htable[nhi].lo,&Hshr4[nhi].lo
+ shr.u $Zhi=$Zhi,8 } //(p19) Z.hi>>=8
+{ .mmi; shladd $rem[1]=$rem[1],1,$rem_8bit //(p19) &rem_8bit[rem]
+ xor $Zlo=$Zlo,$Blo //(p19) Z.lo^=Hshr4[nhi].lo
+ xor $xi[1]=$xi[1],$in };; //(p17) xi=$xi[i]^inp[i]
+{ .mmi; ld8 $Ahi=[$Atbl] //(p18) Htable[nlo].hi
+ ld2 $rem[1]=[$rem[1]] //(p19) rem_8bit[rem]
+ dep $Atbl=$xi[1],$Htbl,4,4 };; //(p17) &Htable[nlo].lo
+{ .mmi; shladd $rem[0]=$rem[0],4,r0 //(p18) Htable[nhi].lo<<4
+ xor $Zlo=$Zlo,$Alo //(p18) Z.lo^=Htable[nlo].lo
+ xor $Zhi=$Zhi,$Bhi };; //(p19) Z.hi^=Hshr4[nhi].hi
+{ .mmi; ld8 $Blo=[$Btbl],8 //(p18) Hshr4[nhi].lo,&Hshr4[nhi].hi
+ shl $rem[1]=$rem[1],48 } //(p19) rem_8bit[rem]<<48
+{ .mmi; xor $rem[0]=$rem[0],$Zlo //(p18) Z.lo^(Htable[nhi].lo<<4)
+ xor $Zhi=$Zhi,$Ahi //(p18) Z.hi^=Htable[nlo].hi
+ and $xi[1]=-16,$xi[1] };; //(p17) nhi=xi&0xf0
+{ .mmi; ld8 $Bhi=[$Btbl] //(p18) Hshr4[nhi].hi
+ shrp $Zlo=$Zhi,$Zlo,8 } //(p18) Z.lo=(Z.hi<<56)|(Z.lo>>8)
+{ .mmi; and $rem[0]=$rem[0],$mask0xff //(p18) rem=($Zlo^(Htable[nhi].lo<<4))&0xff
+ xor $Zhi=$Zhi,$rem[1] //(p19) Z.hi^=rem_8bit[rem]<<48
+ add $Btbl=$xi[1],$Htbl };; //(p17) &Htable[nhi]
+___
+push (@xi,shift(@xi)); push (@rem,shift(@rem)); # "rotate" registers
+
+$code.=<<___; # (p18),(p19)
+{ .mfi; ld8 $Alo=[$Atbl],8 //(p18) Htable[nlo].lo,&Htable[nlo].hi
+ shr.u $Zhi=$Zhi,8 } //(p19) Z.hi>>=8
+{ .mfi; shladd $rem[1]=$rem[1],1,$rem_8bit //(p19) &rem_8bit[rem]
+ xor $Zlo=$Zlo,$Blo };; //(p19) Z.lo^=Hshr4[nhi].lo
+{ .mfi; ld8 $Ahi=[$Atbl] //(p18) Htable[nlo].hi
+ xor $Zlo=$Zlo,$Alo } //(p18) Z.lo^=Htable[nlo].lo
+{ .mfi; ld2 $rem[1]=[$rem[1]] //(p19) rem_8bit[rem]
+ xor $Zhi=$Zhi,$Bhi };; //(p19) Z.hi^=Hshr4[nhi].hi
+{ .mfi; ld8 $Blo=[$Btbl],8 //(p18) Htable[nhi].lo,&Htable[nhi].hi
+ shl $rem[1]=$rem[1],48 } //(p19) rem_8bit[rem]<<48
+{ .mfi; shladd $rem[0]=$Zlo,4,r0 //(p18) Z.lo<<4
+ xor $Zhi=$Zhi,$Ahi };; //(p18) Z.hi^=Htable[nlo].hi
+{ .mfi; ld8 $Bhi=[$Btbl] //(p18) Htable[nhi].hi
+ shrp $Zlo=$Zhi,$Zlo,4 } //(p18) Z.lo=(Z.hi<<60)|(Z.lo>>4)
+{ .mfi; and $rem[0]=$rem[0],$mask0xff //(p18) rem=($Zlo^(Htable[nhi].lo<<4))&0xff
+ xor $Zhi=$Zhi,$rem[1] };; //(p19) Z.hi^=rem_8bit[rem]<<48
+___
+push (@xi,shift(@xi)); push (@rem,shift(@rem)); # "rotate" registers
+
+$code.=<<___; # (p19)
+{ .mmi; cmp.ltu p6,p0=$inp,$len
+ add $inp=32,$inp
+ shr.u $Zhi=$Zhi,4 } //(p19) Z.hi>>=4
+{ .mmi; shladd $rem[1]=$rem[1],1,$rem_8bit //(p19) &rem_8bit[rem]
+ xor $Zlo=$Zlo,$Blo //(p19) Z.lo^=Hshr4[nhi].lo
+ add $Xip=9,$Xip };; // &Xi.lo
+{ .mmi; ld2 $rem[1]=[$rem[1]] //(p19) rem_8bit[rem]
+(p6) ld1 $in=[$inp],-1 //[p16] *inp--
+(p6) extr.u $xi[1]=$Zlo,8,8 } //[p17] Xi[14]
+{ .mmi; xor $Zhi=$Zhi,$Bhi //(p19) Z.hi^=Hshr4[nhi].hi
+(p6) and $xi[0]=$Zlo,$mask0xff };; //[p16] Xi[15]
+{ .mmi; st8 [$Xip]=$Zlo,-8
+(p6) xor $xi[0]=$xi[0],$in //[p17] xi=$xi[i]^inp[i]
+ shl $rem[1]=$rem[1],48 };; //(p19) rem_8bit[rem]<<48
+{ .mmi;
+(p6) ld1 $in=[$inp],-1 //[p16] *inp--
+ xor $Zhi=$Zhi,$rem[1] //(p19) Z.hi^=rem_8bit[rem]<<48
+(p6) dep $Atbl=$xi[0],$Htbl,4,4 } //[p17] &Htable[nlo].lo
+{ .mib;
+(p6) and $xi[0]=-16,$xi[0] //[p17] nhi=xi&0xf0
+(p6) br.cond.dptk.many .LOOP };;
+
+{ .mib; st8 [$Xip]=$Zhi };;
+{ .mib; $rum 1<<1 // return to little-endian
+ .restore sp
+ mov sp=prevsp
+ br.ret.sptk.many b0 };;
+.endp gcm_ghash_4bit#
+___
+$code.=<<___;
+.align 128
+.type rem_4bit#,\@object
+rem_4bit:
+ data8 0x0000<<48, 0x1C20<<48, 0x3840<<48, 0x2460<<48
+ data8 0x7080<<48, 0x6CA0<<48, 0x48C0<<48, 0x54E0<<48
+ data8 0xE100<<48, 0xFD20<<48, 0xD940<<48, 0xC560<<48
+ data8 0x9180<<48, 0x8DA0<<48, 0xA9C0<<48, 0xB5E0<<48
+.size rem_4bit#,128
+.type rem_8bit#,\@object
+rem_8bit:
+ data1 0x00,0x00, 0x01,0xC2, 0x03,0x84, 0x02,0x46, 0x07,0x08, 0x06,0xCA, 0x04,0x8C, 0x05,0x4E
+ data1 0x0E,0x10, 0x0F,0xD2, 0x0D,0x94, 0x0C,0x56, 0x09,0x18, 0x08,0xDA, 0x0A,0x9C, 0x0B,0x5E
+ data1 0x1C,0x20, 0x1D,0xE2, 0x1F,0xA4, 0x1E,0x66, 0x1B,0x28, 0x1A,0xEA, 0x18,0xAC, 0x19,0x6E
+ data1 0x12,0x30, 0x13,0xF2, 0x11,0xB4, 0x10,0x76, 0x15,0x38, 0x14,0xFA, 0x16,0xBC, 0x17,0x7E
+ data1 0x38,0x40, 0x39,0x82, 0x3B,0xC4, 0x3A,0x06, 0x3F,0x48, 0x3E,0x8A, 0x3C,0xCC, 0x3D,0x0E
+ data1 0x36,0x50, 0x37,0x92, 0x35,0xD4, 0x34,0x16, 0x31,0x58, 0x30,0x9A, 0x32,0xDC, 0x33,0x1E
+ data1 0x24,0x60, 0x25,0xA2, 0x27,0xE4, 0x26,0x26, 0x23,0x68, 0x22,0xAA, 0x20,0xEC, 0x21,0x2E
+ data1 0x2A,0x70, 0x2B,0xB2, 0x29,0xF4, 0x28,0x36, 0x2D,0x78, 0x2C,0xBA, 0x2E,0xFC, 0x2F,0x3E
+ data1 0x70,0x80, 0x71,0x42, 0x73,0x04, 0x72,0xC6, 0x77,0x88, 0x76,0x4A, 0x74,0x0C, 0x75,0xCE
+ data1 0x7E,0x90, 0x7F,0x52, 0x7D,0x14, 0x7C,0xD6, 0x79,0x98, 0x78,0x5A, 0x7A,0x1C, 0x7B,0xDE
+ data1 0x6C,0xA0, 0x6D,0x62, 0x6F,0x24, 0x6E,0xE6, 0x6B,0xA8, 0x6A,0x6A, 0x68,0x2C, 0x69,0xEE
+ data1 0x62,0xB0, 0x63,0x72, 0x61,0x34, 0x60,0xF6, 0x65,0xB8, 0x64,0x7A, 0x66,0x3C, 0x67,0xFE
+ data1 0x48,0xC0, 0x49,0x02, 0x4B,0x44, 0x4A,0x86, 0x4F,0xC8, 0x4E,0x0A, 0x4C,0x4C, 0x4D,0x8E
+ data1 0x46,0xD0, 0x47,0x12, 0x45,0x54, 0x44,0x96, 0x41,0xD8, 0x40,0x1A, 0x42,0x5C, 0x43,0x9E
+ data1 0x54,0xE0, 0x55,0x22, 0x57,0x64, 0x56,0xA6, 0x53,0xE8, 0x52,0x2A, 0x50,0x6C, 0x51,0xAE
+ data1 0x5A,0xF0, 0x5B,0x32, 0x59,0x74, 0x58,0xB6, 0x5D,0xF8, 0x5C,0x3A, 0x5E,0x7C, 0x5F,0xBE
+ data1 0xE1,0x00, 0xE0,0xC2, 0xE2,0x84, 0xE3,0x46, 0xE6,0x08, 0xE7,0xCA, 0xE5,0x8C, 0xE4,0x4E
+ data1 0xEF,0x10, 0xEE,0xD2, 0xEC,0x94, 0xED,0x56, 0xE8,0x18, 0xE9,0xDA, 0xEB,0x9C, 0xEA,0x5E
+ data1 0xFD,0x20, 0xFC,0xE2, 0xFE,0xA4, 0xFF,0x66, 0xFA,0x28, 0xFB,0xEA, 0xF9,0xAC, 0xF8,0x6E
+ data1 0xF3,0x30, 0xF2,0xF2, 0xF0,0xB4, 0xF1,0x76, 0xF4,0x38, 0xF5,0xFA, 0xF7,0xBC, 0xF6,0x7E
+ data1 0xD9,0x40, 0xD8,0x82, 0xDA,0xC4, 0xDB,0x06, 0xDE,0x48, 0xDF,0x8A, 0xDD,0xCC, 0xDC,0x0E
+ data1 0xD7,0x50, 0xD6,0x92, 0xD4,0xD4, 0xD5,0x16, 0xD0,0x58, 0xD1,0x9A, 0xD3,0xDC, 0xD2,0x1E
+ data1 0xC5,0x60, 0xC4,0xA2, 0xC6,0xE4, 0xC7,0x26, 0xC2,0x68, 0xC3,0xAA, 0xC1,0xEC, 0xC0,0x2E
+ data1 0xCB,0x70, 0xCA,0xB2, 0xC8,0xF4, 0xC9,0x36, 0xCC,0x78, 0xCD,0xBA, 0xCF,0xFC, 0xCE,0x3E
+ data1 0x91,0x80, 0x90,0x42, 0x92,0x04, 0x93,0xC6, 0x96,0x88, 0x97,0x4A, 0x95,0x0C, 0x94,0xCE
+ data1 0x9F,0x90, 0x9E,0x52, 0x9C,0x14, 0x9D,0xD6, 0x98,0x98, 0x99,0x5A, 0x9B,0x1C, 0x9A,0xDE
+ data1 0x8D,0xA0, 0x8C,0x62, 0x8E,0x24, 0x8F,0xE6, 0x8A,0xA8, 0x8B,0x6A, 0x89,0x2C, 0x88,0xEE
+ data1 0x83,0xB0, 0x82,0x72, 0x80,0x34, 0x81,0xF6, 0x84,0xB8, 0x85,0x7A, 0x87,0x3C, 0x86,0xFE
+ data1 0xA9,0xC0, 0xA8,0x02, 0xAA,0x44, 0xAB,0x86, 0xAE,0xC8, 0xAF,0x0A, 0xAD,0x4C, 0xAC,0x8E
+ data1 0xA7,0xD0, 0xA6,0x12, 0xA4,0x54, 0xA5,0x96, 0xA0,0xD8, 0xA1,0x1A, 0xA3,0x5C, 0xA2,0x9E
+ data1 0xB5,0xE0, 0xB4,0x22, 0xB6,0x64, 0xB7,0xA6, 0xB2,0xE8, 0xB3,0x2A, 0xB1,0x6C, 0xB0,0xAE
+ data1 0xBB,0xF0, 0xBA,0x32, 0xB8,0x74, 0xB9,0xB6, 0xBC,0xF8, 0xBD,0x3A, 0xBF,0x7C, 0xBE,0xBE
+.size rem_8bit#,512
+stringz "GHASH for IA64, CRYPTOGAMS by <appro\@openssl.org>"
+___
+
+$code =~ s/mux1(\s+)\S+\@rev/nop.i$1 0x0/gm if ($big_endian);
+$code =~ s/\`([^\`]*)\`/eval $1/gem;
+
+print $code;
+close STDOUT;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 09:35:07 +0000