1 files changed, 234 insertions, 0 deletions

diff --git a/src/lib/libcrypto/rc4/asm/rc4-s390x.pl b/src/lib/libcrypto/rc4/asm/rc4-s390x.pl
new file mode 100644
index 0000000000..7528ece13c
--- /dev/null
+++ b/src/lib/libcrypto/rc4/asm/rc4-s390x.pl
@@ -0,0 +1,234 @@
+#!/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/.
+# ====================================================================
+#
+# February 2009
+#
+# Performance is 2x of gcc 3.4.6 on z10. Coding "secret" is to
+# "cluster" Address Generation Interlocks, so that one pipeline stall
+# resolves several dependencies.
+
+# November 2010.
+#
+# Adapt for -m31 build. If kernel supports what's called "highgprs"
+# feature on Linux [see /proc/cpuinfo], it's possible to use 64-bit
+# instructions and achieve "64-bit" performance even in 31-bit legacy
+# application context. The feature is not specific to any particular
+# processor, as long as it's "z-CPU". Latter implies that the code
+# remains z/Architecture specific. On z990 it was measured to perform
+# 50% better than code generated by gcc 4.3.
+
+$flavour = shift;
+
+if ($flavour =~ /3[12]/) {
+        $SIZE_T=4;
+        $g="";
+} else {
+        $SIZE_T=8;
+        $g="g";
+}
+
+while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
+open STDOUT,">$output";
+
+$rp="%r14";
+$sp="%r15";
+$code=<<___;
+.text
+
+___
+
+# void RC4(RC4_KEY *key,size_t len,const void *inp,void *out)
+{
+$acc="%r0";
+$cnt="%r1";
+$key="%r2";
+$len="%r3";
+$inp="%r4";
+$out="%r5";
+
+@XX=("%r6","%r7");
+@TX=("%r8","%r9");
+$YY="%r10";
+$TY="%r11";
+
+$code.=<<___;
+.globl  RC4
+.type   RC4,\@function
+.align  64
+RC4:
+        stm${g} %r6,%r11,6*$SIZE_T($sp)
+___
+$code.=<<___ if ($flavour =~ /3[12]/);
+        llgfr   $len,$len
+___
+$code.=<<___;
+        llgc    $XX[0],0($key)
+        llgc    $YY,1($key)
+        la      $XX[0],1($XX[0])
+        nill    $XX[0],0xff
+        srlg    $cnt,$len,3
+        ltgr    $cnt,$cnt
+        llgc    $TX[0],2($XX[0],$key)
+        jz      .Lshort
+        j       .Loop8
+
+.align  64
+.Loop8:
+___
+for ($i=0;$i<8;$i++) {
+$code.=<<___;
+        la      $YY,0($YY,$TX[0])       # $i
+        nill    $YY,255
+        la      $XX[1],1($XX[0])
+        nill    $XX[1],255
+___
+$code.=<<___ if ($i==1);
+        llgc    $acc,2($TY,$key)
+___
+$code.=<<___ if ($i>1);
+        sllg    $acc,$acc,8
+        ic      $acc,2($TY,$key)
+___
+$code.=<<___;
+        llgc    $TY,2($YY,$key)
+        stc     $TX[0],2($YY,$key)
+        llgc    $TX[1],2($XX[1],$key)
+        stc     $TY,2($XX[0],$key)
+        cr      $XX[1],$YY
+        jne     .Lcmov$i
+        la      $TX[1],0($TX[0])
+.Lcmov$i:
+        la      $TY,0($TY,$TX[0])
+        nill    $TY,255
+___
+push(@TX,shift(@TX)); push(@XX,shift(@XX));     # "rotate" registers
+}
+
+$code.=<<___;
+        lg      $TX[1],0($inp)
+        sllg    $acc,$acc,8
+        la      $inp,8($inp)
+        ic      $acc,2($TY,$key)
+        xgr     $acc,$TX[1]
+        stg     $acc,0($out)
+        la      $out,8($out)
+        brctg   $cnt,.Loop8
+
+.Lshort:
+        lghi    $acc,7
+        ngr     $len,$acc
+        jz      .Lexit
+        j       .Loop1
+
+.align  16
+.Loop1:
+        la      $YY,0($YY,$TX[0])
+        nill    $YY,255
+        llgc    $TY,2($YY,$key)
+        stc     $TX[0],2($YY,$key)
+        stc     $TY,2($XX[0],$key)
+        ar      $TY,$TX[0]
+        ahi     $XX[0],1
+        nill    $TY,255
+        nill    $XX[0],255
+        llgc    $acc,0($inp)
+        la      $inp,1($inp)
+        llgc    $TY,2($TY,$key)
+        llgc    $TX[0],2($XX[0],$key)
+        xr      $acc,$TY
+        stc     $acc,0($out)
+        la      $out,1($out)
+        brct    $len,.Loop1
+
+.Lexit:
+        ahi     $XX[0],-1
+        stc     $XX[0],0($key)
+        stc     $YY,1($key)
+        lm${g}  %r6,%r11,6*$SIZE_T($sp)
+        br      $rp
+.size   RC4,.-RC4
+.string "RC4 for s390x, CRYPTOGAMS by <appro\@openssl.org>"
+
+___
+}
+
+# void RC4_set_key(RC4_KEY *key,unsigned int len,const void *inp)
+{
+$cnt="%r0";
+$idx="%r1";
+$key="%r2";
+$len="%r3";
+$inp="%r4";
+$acc="%r5";
+$dat="%r6";
+$ikey="%r7";
+$iinp="%r8";
+
+$code.=<<___;
+.globl  private_RC4_set_key
+.type   private_RC4_set_key,\@function
+.align  64
+private_RC4_set_key:
+        stm${g} %r6,%r8,6*$SIZE_T($sp)
+        lhi     $cnt,256
+        la      $idx,0(%r0)
+        sth     $idx,0($key)
+.align  4
+.L1stloop:
+        stc     $idx,2($idx,$key)
+        la      $idx,1($idx)
+        brct    $cnt,.L1stloop
+
+        lghi    $ikey,-256
+        lr      $cnt,$len
+        la      $iinp,0(%r0)
+        la      $idx,0(%r0)
+.align  16
+.L2ndloop:
+        llgc    $acc,2+256($ikey,$key)
+        llgc    $dat,0($iinp,$inp)
+        la      $idx,0($idx,$acc)
+        la      $ikey,1($ikey)
+        la      $idx,0($idx,$dat)
+        nill    $idx,255
+        la      $iinp,1($iinp)
+        tml     $ikey,255
+        llgc    $dat,2($idx,$key)
+        stc     $dat,2+256-1($ikey,$key)
+        stc     $acc,2($idx,$key)
+        jz      .Ldone
+        brct    $cnt,.L2ndloop
+        lr      $cnt,$len
+        la      $iinp,0(%r0)
+        j       .L2ndloop
+.Ldone:
+        lm${g}  %r6,%r8,6*$SIZE_T($sp)
+        br      $rp
+.size   private_RC4_set_key,.-private_RC4_set_key
+
+___
+}
+
+# const char *RC4_options()
+$code.=<<___;
+.globl  RC4_options
+.type   RC4_options,\@function
+.align  16
+RC4_options:
+        larl    %r2,.Loptions
+        br      %r14
+.size   RC4_options,.-RC4_options
+.section        .rodata
+.Loptions:
+.align  8
+.string "rc4(8x,char)"
+___
+
+print $code;
+close STDOUT;   # force flush