e4f1812c68a269a4733069964ecc74ea722af2e1
[openssl.git] / crypto / sha / asm / sha512-s390x.pl
1 #!/usr/bin/env perl
2
3 # ====================================================================
4 # Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
5 # project. The module is, however, dual licensed under OpenSSL and
6 # CRYPTOGAMS licenses depending on where you obtain it. For further
7 # details see http://www.openssl.org/~appro/cryptogams/.
8 # ====================================================================
9
10 # SHA256/512 block procedures for s390x.
11
12 # April 2007.
13 #
14 # sha256_block_data_order is reportedly >3 times faster than gcc 3.3
15 # generated code (must be a bug in compiler, as improvement is
16 # "pathologically" high, in particular in comparison to other SHA
17 # modules). But the real twist is that it detects if hardware support
18 # for SHA256 is available and in such case utilizes it. Then the
19 # performance can reach >6.5x of assembler one for larger chunks.
20 #
21 # sha512_block_data_order is ~70% faster than gcc 3.3 generated code.
22
23 # January 2009.
24 #
25 # Add support for hardware SHA512 and reschedule instructions to
26 # favour dual-issue z10 pipeline. Hardware SHA256/512 is ~4.7x faster
27 # than software.
28
29 $t0="%r0";
30 $t1="%r1";
31 $ctx="%r2";     $t2="%r2";
32 $inp="%r3";
33 $len="%r4";     # used as index in inner loop
34
35 $A="%r5";
36 $B="%r6";
37 $C="%r7";
38 $D="%r8";
39 $E="%r9";
40 $F="%r10";
41 $G="%r11";
42 $H="%r12";      @V=($A,$B,$C,$D,$E,$F,$G,$H);
43 $tbl="%r13";
44 $T1="%r14";
45 $sp="%r15";
46
47 $output=shift;
48 open STDOUT,">$output";
49
50 if ($output =~ /512/) {
51         $label="512";
52         $SZ=8;
53         $LD="lg";       # load from memory
54         $ST="stg";      # store to memory
55         $ADD="alg";     # add with memory operand
56         $ROT="rllg";    # rotate left
57         $SHR="srlg";    # logical right shift [see even at the end]
58         @Sigma0=(25,30,36);
59         @Sigma1=(23,46,50);
60         @sigma0=(56,63, 7);
61         @sigma1=( 3,45, 6);
62         $rounds=80;
63         $kimdfunc=3;    # 0 means unknown/unsupported/unimplemented/disabled
64 } else {
65         $label="256";
66         $SZ=4;
67         $LD="llgf";     # load from memory
68         $ST="st";       # store to memory
69         $ADD="al";      # add with memory operand
70         $ROT="rll";     # rotate left
71         $SHR="srl";     # logical right shift
72         @Sigma0=(10,19,30);
73         @Sigma1=( 7,21,26);
74         @sigma0=(14,25, 3);
75         @sigma1=(13,15,10);
76         $rounds=64;
77         $kimdfunc=2;    # magic function code for kimd instruction
78 }
79 $Func="sha${label}_block_data_order";
80 $Table="K${label}";
81 $frame=160+16*$SZ;
82
83 sub BODY_00_15 {
84 my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_;
85
86 $code.=<<___ if ($i<16);
87         $LD     $T1,`$i*$SZ`($inp)      ### $i
88 ___
89 $code.=<<___;
90         $ROT    $t0,$e,$Sigma1[0]
91         $ROT    $t1,$e,$Sigma1[1]
92          lgr    $t2,$f
93         xgr     $t0,$t1
94         $ROT    $t1,$t1,`$Sigma1[2]-$Sigma1[1]`
95          xgr    $t2,$g
96         $ST     $T1,`160+$SZ*($i%16)`($sp)
97         xgr     $t0,$t1                 # Sigma1(e)
98         la      $T1,0($T1,$h)           # T1+=h
99          ngr    $t2,$e
100          lgr    $t1,$a
101         algr    $T1,$t0                 # T1+=Sigma1(e)
102         $ROT    $h,$a,$Sigma0[0]
103          xgr    $t2,$g                  # Ch(e,f,g)
104         $ADD    $T1,`$i*$SZ`($len,$tbl) # T1+=K[i]
105         $ROT    $t0,$a,$Sigma0[1]
106         algr    $T1,$t2                 # T1+=Ch(e,f,g)
107          ogr    $t1,$b
108         xgr     $h,$t0
109          lgr    $t2,$a
110          ngr    $t1,$c
111         $ROT    $t0,$t0,`$Sigma0[2]-$Sigma0[1]`
112         xgr     $h,$t0                  # h=Sigma0(a)
113          ngr    $t2,$b
114         algr    $h,$T1                  # h+=T1
115          ogr    $t2,$t1                 # Maj(a,b,c)
116         la      $d,0($d,$T1)            # d+=T1
117         algr    $h,$t2                  # h+=Maj(a,b,c)
118 ___
119 }
120
121 sub BODY_16_XX {
122 my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_;
123
124 $code.=<<___;
125         $LD     $T1,`160+$SZ*(($i+1)%16)`($sp)  ### $i
126         $LD     $t1,`160+$SZ*(($i+14)%16)`($sp)
127         $ROT    $t0,$T1,$sigma0[0]
128         $SHR    $T1,$sigma0[2]
129         $ROT    $t2,$t0,`$sigma0[1]-$sigma0[0]`
130         xgr     $T1,$t0
131         $ROT    $t0,$t1,$sigma1[0]
132         xgr     $T1,$t2                         # sigma0(X[i+1])
133         $SHR    $t1,$sigma1[2]
134         $ADD    $T1,`160+$SZ*($i%16)`($sp)      # +=X[i]
135         xgr     $t1,$t0
136         $ROT    $t0,$t0,`$sigma1[1]-$sigma1[0]`
137         $ADD    $T1,`160+$SZ*(($i+9)%16)`($sp)  # +=X[i+9]
138         xgr     $t1,$t0                         # sigma1(X[i+14])
139         algr    $T1,$t1                         # +=sigma1(X[i+14])
140 ___
141         &BODY_00_15(@_);
142 }
143
144 $code.=<<___;
145 .text
146 .align  64
147 .type   $Table,\@object
148 $Table:
149 ___
150 $code.=<<___ if ($SZ==4);
151         .long   0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
152         .long   0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
153         .long   0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
154         .long   0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
155         .long   0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
156         .long   0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
157         .long   0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
158         .long   0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
159         .long   0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
160         .long   0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
161         .long   0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
162         .long   0xd192e819,0xd6990624,0xf40e3585,0x106aa070
163         .long   0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
164         .long   0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
165         .long   0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
166         .long   0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
167 ___
168 $code.=<<___ if ($SZ==8);
169         .quad   0x428a2f98d728ae22,0x7137449123ef65cd
170         .quad   0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc
171         .quad   0x3956c25bf348b538,0x59f111f1b605d019
172         .quad   0x923f82a4af194f9b,0xab1c5ed5da6d8118
173         .quad   0xd807aa98a3030242,0x12835b0145706fbe
174         .quad   0x243185be4ee4b28c,0x550c7dc3d5ffb4e2
175         .quad   0x72be5d74f27b896f,0x80deb1fe3b1696b1
176         .quad   0x9bdc06a725c71235,0xc19bf174cf692694
177         .quad   0xe49b69c19ef14ad2,0xefbe4786384f25e3
178         .quad   0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65
179         .quad   0x2de92c6f592b0275,0x4a7484aa6ea6e483
180         .quad   0x5cb0a9dcbd41fbd4,0x76f988da831153b5
181         .quad   0x983e5152ee66dfab,0xa831c66d2db43210
182         .quad   0xb00327c898fb213f,0xbf597fc7beef0ee4
183         .quad   0xc6e00bf33da88fc2,0xd5a79147930aa725
184         .quad   0x06ca6351e003826f,0x142929670a0e6e70
185         .quad   0x27b70a8546d22ffc,0x2e1b21385c26c926
186         .quad   0x4d2c6dfc5ac42aed,0x53380d139d95b3df
187         .quad   0x650a73548baf63de,0x766a0abb3c77b2a8
188         .quad   0x81c2c92e47edaee6,0x92722c851482353b
189         .quad   0xa2bfe8a14cf10364,0xa81a664bbc423001
190         .quad   0xc24b8b70d0f89791,0xc76c51a30654be30
191         .quad   0xd192e819d6ef5218,0xd69906245565a910
192         .quad   0xf40e35855771202a,0x106aa07032bbd1b8
193         .quad   0x19a4c116b8d2d0c8,0x1e376c085141ab53
194         .quad   0x2748774cdf8eeb99,0x34b0bcb5e19b48a8
195         .quad   0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb
196         .quad   0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3
197         .quad   0x748f82ee5defb2fc,0x78a5636f43172f60
198         .quad   0x84c87814a1f0ab72,0x8cc702081a6439ec
199         .quad   0x90befffa23631e28,0xa4506cebde82bde9
200         .quad   0xbef9a3f7b2c67915,0xc67178f2e372532b
201         .quad   0xca273eceea26619c,0xd186b8c721c0c207
202         .quad   0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178
203         .quad   0x06f067aa72176fba,0x0a637dc5a2c898a6
204         .quad   0x113f9804bef90dae,0x1b710b35131c471b
205         .quad   0x28db77f523047d84,0x32caab7b40c72493
206         .quad   0x3c9ebe0a15c9bebc,0x431d67c49c100d4c
207         .quad   0x4cc5d4becb3e42b6,0x597f299cfc657e2a
208         .quad   0x5fcb6fab3ad6faec,0x6c44198c4a475817
209 ___
210 $code.=<<___;
211 .size   $Table,.-$Table
212 .globl  $Func
213 .type   $Func,\@function
214 $Func:
215 ___
216 $code.=<<___ if ($kimdfunc);
217         lghi    %r0,0
218         la      %r1,16($sp)
219         .long   0xb93e0002      # kimd %r0,%r2
220         lg      %r0,16($sp)
221         tmhh    %r0,`0x8000>>$kimdfunc`
222         jz      .Lsoftware
223         lghi    %r0,$kimdfunc
224         lgr     %r1,$ctx
225         lgr     %r2,$inp
226         sllg    %r3,$len,`log(16*$SZ)/log(2)`
227         .long   0xb93e0002      # kimd %r0,%r2
228         brc     1,.-4           # pay attention to "partial completion"
229         br      %r14
230 .Lsoftware:
231 ___
232 $code.=<<___;
233         sllg    $len,$len,`log(16*$SZ)/log(2)`
234         lghi    %r1,-$frame
235         agr     $len,$inp
236         stmg    $ctx,%r15,16($sp)
237         lgr     %r0,$sp
238         la      $sp,0(%r1,$sp)
239         stg     %r0,0($sp)
240
241         larl    $tbl,$Table
242         $LD     $A,`0*$SZ`($ctx)
243         $LD     $B,`1*$SZ`($ctx)
244         $LD     $C,`2*$SZ`($ctx)
245         $LD     $D,`3*$SZ`($ctx)
246         $LD     $E,`4*$SZ`($ctx)
247         $LD     $F,`5*$SZ`($ctx)
248         $LD     $G,`6*$SZ`($ctx)
249         $LD     $H,`7*$SZ`($ctx)
250
251 .Lloop:
252         lghi    $len,0
253 ___
254 for ($i=0;$i<16;$i++)   { &BODY_00_15($i,@V); unshift(@V,pop(@V)); }
255 $code.=".Lrounds_16_xx:\n";
256 for (;$i<32;$i++)       { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); }
257 $code.=<<___;
258         aghi    $len,`16*$SZ`
259         lghi    $t0,`($rounds-16)*$SZ`
260         clgr    $len,$t0
261         jne     .Lrounds_16_xx
262
263         lg      $ctx,`$frame+16`($sp)
264         la      $inp,`16*$SZ`($inp)
265         $ADD    $A,`0*$SZ`($ctx)
266         $ADD    $B,`1*$SZ`($ctx)
267         $ADD    $C,`2*$SZ`($ctx)
268         $ADD    $D,`3*$SZ`($ctx)
269         $ADD    $E,`4*$SZ`($ctx)
270         $ADD    $F,`5*$SZ`($ctx)
271         $ADD    $G,`6*$SZ`($ctx)
272         $ADD    $H,`7*$SZ`($ctx)
273         $ST     $A,`0*$SZ`($ctx)
274         $ST     $B,`1*$SZ`($ctx)
275         $ST     $C,`2*$SZ`($ctx)
276         $ST     $D,`3*$SZ`($ctx)
277         $ST     $E,`4*$SZ`($ctx)
278         $ST     $F,`5*$SZ`($ctx)
279         $ST     $G,`6*$SZ`($ctx)
280         $ST     $H,`7*$SZ`($ctx)
281         clg     $inp,`$frame+32`($sp)
282         jne     .Lloop
283
284         lmg     %r6,%r15,`$frame+48`($sp)       
285         br      %r14
286 .size   $Func,.-$Func
287 .string "SHA${label} block transform for s390x, CRYPTOGAMS by <appro\@openssl.org>"
288 ___
289
290 $code =~ s/\`([^\`]*)\`/eval $1/gem;
291 # unlike 32-bit shift 64-bit one takes three arguments
292 $code =~ s/(srlg\s+)(%r[0-9]+),/$1$2,$2,/gm;
293
294 print $code;
295 close STDOUT;