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-rwxr-xr-xsrc/lib/libcrypto/sha/asm/sha1-x86_64.pl351
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diff --git a/src/lib/libcrypto/sha/asm/sha1-x86_64.pl b/src/lib/libcrypto/sha/asm/sha1-x86_64.pl
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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# sha1_block procedure for x86_64.
11#
12# It was brought to my attention that on EM64T compiler-generated code
13# was far behind 32-bit assembler implementation. This is unlike on
14# Opteron where compiler-generated code was only 15% behind 32-bit
15# assembler, which originally made it hard to motivate the effort.
16# There was suggestion to mechanically translate 32-bit code, but I
17# dismissed it, reasoning that x86_64 offers enough register bank
18# capacity to fully utilize SHA-1 parallelism. Therefore this fresh
19# implementation:-) However! While 64-bit code does performs better
20# on Opteron, I failed to beat 32-bit assembler on EM64T core. Well,
21# x86_64 does offer larger *addressable* bank, but out-of-order core
22# reaches for even more registers through dynamic aliasing, and EM64T
23# core must have managed to run-time optimize even 32-bit code just as
24# good as 64-bit one. Performance improvement is summarized in the
25# following table:
26#
27# gcc 3.4 32-bit asm cycles/byte
28# Opteron +45% +20% 6.8
29# Xeon P4 +65% +0% 9.9
30# Core2 +60% +10% 7.0
31
32$flavour = shift;
33$output = shift;
34if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
35
36$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
37
38$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
39( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
40( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
41die "can't locate x86_64-xlate.pl";
42
43open STDOUT,"| $^X $xlate $flavour $output";
44
45$ctx="%rdi"; # 1st arg
46$inp="%rsi"; # 2nd arg
47$num="%rdx"; # 3rd arg
48
49# reassign arguments in order to produce more compact code
50$ctx="%r8";
51$inp="%r9";
52$num="%r10";
53
54$xi="%eax";
55$t0="%ebx";
56$t1="%ecx";
57$A="%edx";
58$B="%esi";
59$C="%edi";
60$D="%ebp";
61$E="%r11d";
62$T="%r12d";
63
64@V=($A,$B,$C,$D,$E,$T);
65
66sub PROLOGUE {
67my $func=shift;
68$code.=<<___;
69.globl $func
70.type $func,\@function,3
71.align 16
72$func:
73 push %rbx
74 push %rbp
75 push %r12
76 mov %rsp,%r11
77 mov %rdi,$ctx # reassigned argument
78 sub \$`8+16*4`,%rsp
79 mov %rsi,$inp # reassigned argument
80 and \$-64,%rsp
81 mov %rdx,$num # reassigned argument
82 mov %r11,`16*4`(%rsp)
83.Lprologue:
84
85 mov 0($ctx),$A
86 mov 4($ctx),$B
87 mov 8($ctx),$C
88 mov 12($ctx),$D
89 mov 16($ctx),$E
90___
91}
92
93sub EPILOGUE {
94my $func=shift;
95$code.=<<___;
96 mov `16*4`(%rsp),%rsi
97 mov (%rsi),%r12
98 mov 8(%rsi),%rbp
99 mov 16(%rsi),%rbx
100 lea 24(%rsi),%rsp
101.Lepilogue:
102 ret
103.size $func,.-$func
104___
105}
106
107sub BODY_00_19 {
108my ($i,$a,$b,$c,$d,$e,$f,$host)=@_;
109my $j=$i+1;
110$code.=<<___ if ($i==0);
111 mov `4*$i`($inp),$xi
112 `"bswap $xi" if(!defined($host))`
113 mov $xi,`4*$i`(%rsp)
114___
115$code.=<<___ if ($i<15);
116 lea 0x5a827999($xi,$e),$f
117 mov $c,$t0
118 mov `4*$j`($inp),$xi
119 mov $a,$e
120 xor $d,$t0
121 `"bswap $xi" if(!defined($host))`
122 rol \$5,$e
123 and $b,$t0
124 mov $xi,`4*$j`(%rsp)
125 add $e,$f
126 xor $d,$t0
127 rol \$30,$b
128 add $t0,$f
129___
130$code.=<<___ if ($i>=15);
131 lea 0x5a827999($xi,$e),$f
132 mov `4*($j%16)`(%rsp),$xi
133 mov $c,$t0
134 mov $a,$e
135 xor `4*(($j+2)%16)`(%rsp),$xi
136 xor $d,$t0
137 rol \$5,$e
138 xor `4*(($j+8)%16)`(%rsp),$xi
139 and $b,$t0
140 add $e,$f
141 xor `4*(($j+13)%16)`(%rsp),$xi
142 xor $d,$t0
143 rol \$30,$b
144 add $t0,$f
145 rol \$1,$xi
146 mov $xi,`4*($j%16)`(%rsp)
147___
148}
149
150sub BODY_20_39 {
151my ($i,$a,$b,$c,$d,$e,$f)=@_;
152my $j=$i+1;
153my $K=($i<40)?0x6ed9eba1:0xca62c1d6;
154$code.=<<___ if ($i<79);
155 lea $K($xi,$e),$f
156 mov `4*($j%16)`(%rsp),$xi
157 mov $c,$t0
158 mov $a,$e
159 xor `4*(($j+2)%16)`(%rsp),$xi
160 xor $b,$t0
161 rol \$5,$e
162 xor `4*(($j+8)%16)`(%rsp),$xi
163 xor $d,$t0
164 add $e,$f
165 xor `4*(($j+13)%16)`(%rsp),$xi
166 rol \$30,$b
167 add $t0,$f
168 rol \$1,$xi
169___
170$code.=<<___ if ($i<76);
171 mov $xi,`4*($j%16)`(%rsp)
172___
173$code.=<<___ if ($i==79);
174 lea $K($xi,$e),$f
175 mov $c,$t0
176 mov $a,$e
177 xor $b,$t0
178 rol \$5,$e
179 xor $d,$t0
180 add $e,$f
181 rol \$30,$b
182 add $t0,$f
183___
184}
185
186sub BODY_40_59 {
187my ($i,$a,$b,$c,$d,$e,$f)=@_;
188my $j=$i+1;
189$code.=<<___;
190 lea 0x8f1bbcdc($xi,$e),$f
191 mov `4*($j%16)`(%rsp),$xi
192 mov $b,$t0
193 mov $b,$t1
194 xor `4*(($j+2)%16)`(%rsp),$xi
195 mov $a,$e
196 and $c,$t0
197 xor `4*(($j+8)%16)`(%rsp),$xi
198 or $c,$t1
199 rol \$5,$e
200 xor `4*(($j+13)%16)`(%rsp),$xi
201 and $d,$t1
202 add $e,$f
203 rol \$1,$xi
204 or $t1,$t0
205 rol \$30,$b
206 mov $xi,`4*($j%16)`(%rsp)
207 add $t0,$f
208___
209}
210
211$code=".text\n";
212
213&PROLOGUE("sha1_block_data_order");
214$code.=".align 4\n.Lloop:\n";
215for($i=0;$i<20;$i++) { &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
216for(;$i<40;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
217for(;$i<60;$i++) { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
218for(;$i<80;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
219$code.=<<___;
220 add 0($ctx),$E
221 add 4($ctx),$T
222 add 8($ctx),$A
223 add 12($ctx),$B
224 add 16($ctx),$C
225 mov $E,0($ctx)
226 mov $T,4($ctx)
227 mov $A,8($ctx)
228 mov $B,12($ctx)
229 mov $C,16($ctx)
230
231 xchg $E,$A # mov $E,$A
232 xchg $T,$B # mov $T,$B
233 xchg $E,$C # mov $A,$C
234 xchg $T,$D # mov $B,$D
235 # mov $C,$E
236 lea `16*4`($inp),$inp
237 sub \$1,$num
238 jnz .Lloop
239___
240&EPILOGUE("sha1_block_data_order");
241$code.=<<___;
242.asciz "SHA1 block transform for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
243.align 16
244___
245
246# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
247# CONTEXT *context,DISPATCHER_CONTEXT *disp)
248if ($win64) {
249$rec="%rcx";
250$frame="%rdx";
251$context="%r8";
252$disp="%r9";
253
254$code.=<<___;
255.extern __imp_RtlVirtualUnwind
256.type se_handler,\@abi-omnipotent
257.align 16
258se_handler:
259 push %rsi
260 push %rdi
261 push %rbx
262 push %rbp
263 push %r12
264 push %r13
265 push %r14
266 push %r15
267 pushfq
268 sub \$64,%rsp
269
270 mov 120($context),%rax # pull context->Rax
271 mov 248($context),%rbx # pull context->Rip
272
273 lea .Lprologue(%rip),%r10
274 cmp %r10,%rbx # context->Rip<.Lprologue
275 jb .Lin_prologue
276
277 mov 152($context),%rax # pull context->Rsp
278
279 lea .Lepilogue(%rip),%r10
280 cmp %r10,%rbx # context->Rip>=.Lepilogue
281 jae .Lin_prologue
282
283 mov `16*4`(%rax),%rax # pull saved stack pointer
284 lea 24(%rax),%rax
285
286 mov -8(%rax),%rbx
287 mov -16(%rax),%rbp
288 mov -24(%rax),%r12
289 mov %rbx,144($context) # restore context->Rbx
290 mov %rbp,160($context) # restore context->Rbp
291 mov %r12,216($context) # restore context->R12
292
293.Lin_prologue:
294 mov 8(%rax),%rdi
295 mov 16(%rax),%rsi
296 mov %rax,152($context) # restore context->Rsp
297 mov %rsi,168($context) # restore context->Rsi
298 mov %rdi,176($context) # restore context->Rdi
299
300 mov 40($disp),%rdi # disp->ContextRecord
301 mov $context,%rsi # context
302 mov \$154,%ecx # sizeof(CONTEXT)
303 .long 0xa548f3fc # cld; rep movsq
304
305 mov $disp,%rsi
306 xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
307 mov 8(%rsi),%rdx # arg2, disp->ImageBase
308 mov 0(%rsi),%r8 # arg3, disp->ControlPc
309 mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
310 mov 40(%rsi),%r10 # disp->ContextRecord
311 lea 56(%rsi),%r11 # &disp->HandlerData
312 lea 24(%rsi),%r12 # &disp->EstablisherFrame
313 mov %r10,32(%rsp) # arg5
314 mov %r11,40(%rsp) # arg6
315 mov %r12,48(%rsp) # arg7
316 mov %rcx,56(%rsp) # arg8, (NULL)
317 call *__imp_RtlVirtualUnwind(%rip)
318
319 mov \$1,%eax # ExceptionContinueSearch
320 add \$64,%rsp
321 popfq
322 pop %r15
323 pop %r14
324 pop %r13
325 pop %r12
326 pop %rbp
327 pop %rbx
328 pop %rdi
329 pop %rsi
330 ret
331.size se_handler,.-se_handler
332
333.section .pdata
334.align 4
335 .rva .LSEH_begin_sha1_block_data_order
336 .rva .LSEH_end_sha1_block_data_order
337 .rva .LSEH_info_sha1_block_data_order
338
339.section .xdata
340.align 8
341.LSEH_info_sha1_block_data_order:
342 .byte 9,0,0,0
343 .rva se_handler
344___
345}
346
347####################################################################
348
349$code =~ s/\`([^\`]*)\`/eval $1/gem;
350print $code;
351close STDOUT;
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-01-05 11:26:32 +0000