xref: /freebsd/crypto/openssl/engines/asm/e_padlock-x86_64.pl (revision c66ec88fed842fbaad62c30d510644ceb7bd2d71) 
1#! /usr/bin/env perl
2# Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
3#
4# Licensed under the OpenSSL license (the "License").  You may not use
5# this file except in compliance with the License.  You can obtain a copy
6# in the file LICENSE in the source distribution or at
7# https://www.openssl.org/source/license.html
8
9
10# ====================================================================
11# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
12# project. The module is, however, dual licensed under OpenSSL and
13# CRYPTOGAMS licenses depending on where you obtain it. For further
14# details see http://www.openssl.org/~appro/cryptogams/.
15# ====================================================================
16
17# September 2011
18#
19# Assembler helpers for Padlock engine. See even e_padlock-x86.pl for
20# details.
21
22$flavour = shift;
23$output  = shift;
24if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
25
26$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
27
28$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
29( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
30( $xlate="${dir}../../crypto/perlasm/x86_64-xlate.pl" and -f $xlate) or
31die "can't locate x86_64-xlate.pl";
32
33open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\"";
34*STDOUT=*OUT;
35
36$code=".text\n";
37
38%PADLOCK_PREFETCH=(ecb=>128, cbc=>64, ctr32=>32);	# prefetch errata
39$PADLOCK_CHUNK=512;	# Must be a power of 2 between 32 and 2^20
40
41$ctx="%rdx";
42$out="%rdi";
43$inp="%rsi";
44$len="%rcx";
45$chunk="%rbx";
46
47($arg1,$arg2,$arg3,$arg4)=$win64?("%rcx","%rdx","%r8", "%r9") : # Win64 order
48                                 ("%rdi","%rsi","%rdx","%rcx"); # Unix order
49
50$code.=<<___;
51.globl	padlock_capability
52.type	padlock_capability,\@abi-omnipotent
53.align	16
54padlock_capability:
55	mov	%rbx,%r8
56	xor	%eax,%eax
57	cpuid
58	xor	%eax,%eax
59	cmp	\$`"0x".unpack("H*",'tneC')`,%ebx
60	jne	.Lzhaoxin
61	cmp	\$`"0x".unpack("H*",'Hrua')`,%edx
62	jne	.Lnoluck
63	cmp	\$`"0x".unpack("H*",'slua')`,%ecx
64	jne	.Lnoluck
65	jmp	.LzhaoxinEnd
66.Lzhaoxin:
67	cmp	\$`"0x".unpack("H*",'hS  ')`,%ebx
68	jne	.Lnoluck
69	cmp	\$`"0x".unpack("H*",'hgna')`,%edx
70	jne	.Lnoluck
71	cmp	\$`"0x".unpack("H*",'  ia')`,%ecx
72	jne	.Lnoluck
73.LzhaoxinEnd:
74	mov	\$0xC0000000,%eax
75	cpuid
76	mov	%eax,%edx
77	xor	%eax,%eax
78	cmp	\$0xC0000001,%edx
79	jb	.Lnoluck
80	mov	\$0xC0000001,%eax
81	cpuid
82	mov	%edx,%eax
83	and	\$0xffffffef,%eax
84	or	\$0x10,%eax		# set Nano bit#4
85.Lnoluck:
86	mov	%r8,%rbx
87	ret
88.size	padlock_capability,.-padlock_capability
89
90.globl	padlock_key_bswap
91.type	padlock_key_bswap,\@abi-omnipotent,0
92.align	16
93padlock_key_bswap:
94	mov	240($arg1),%edx
95.Lbswap_loop:
96	mov	($arg1),%eax
97	bswap	%eax
98	mov	%eax,($arg1)
99	lea	4($arg1),$arg1
100	sub	\$1,%edx
101	jnz	.Lbswap_loop
102	ret
103.size	padlock_key_bswap,.-padlock_key_bswap
104
105.globl	padlock_verify_context
106.type	padlock_verify_context,\@abi-omnipotent
107.align	16
108padlock_verify_context:
109	mov	$arg1,$ctx
110	pushf
111	lea	.Lpadlock_saved_context(%rip),%rax
112	call	_padlock_verify_ctx
113	lea	8(%rsp),%rsp
114	ret
115.size	padlock_verify_context,.-padlock_verify_context
116
117.type	_padlock_verify_ctx,\@abi-omnipotent
118.align	16
119_padlock_verify_ctx:
120	mov	8(%rsp),%r8
121	bt	\$30,%r8
122	jnc	.Lverified
123	cmp	(%rax),$ctx
124	je	.Lverified
125	pushf
126	popf
127.Lverified:
128	mov	$ctx,(%rax)
129	ret
130.size	_padlock_verify_ctx,.-_padlock_verify_ctx
131
132.globl	padlock_reload_key
133.type	padlock_reload_key,\@abi-omnipotent
134.align	16
135padlock_reload_key:
136	pushf
137	popf
138	ret
139.size	padlock_reload_key,.-padlock_reload_key
140
141.globl	padlock_aes_block
142.type	padlock_aes_block,\@function,3
143.align	16
144padlock_aes_block:
145	mov	%rbx,%r8
146	mov	\$1,$len
147	lea	32($ctx),%rbx		# key
148	lea	16($ctx),$ctx		# control word
149	.byte	0xf3,0x0f,0xa7,0xc8	# rep xcryptecb
150	mov	%r8,%rbx
151	ret
152.size	padlock_aes_block,.-padlock_aes_block
153
154.globl	padlock_xstore
155.type	padlock_xstore,\@function,2
156.align	16
157padlock_xstore:
158	mov	%esi,%edx
159	.byte	0x0f,0xa7,0xc0		# xstore
160	ret
161.size	padlock_xstore,.-padlock_xstore
162
163.globl	padlock_sha1_oneshot
164.type	padlock_sha1_oneshot,\@function,3
165.align	16
166padlock_sha1_oneshot:
167	mov	%rdx,%rcx
168	mov	%rdi,%rdx		# put aside %rdi
169	movups	(%rdi),%xmm0		# copy-in context
170	sub	\$128+8,%rsp
171	mov	16(%rdi),%eax
172	movaps	%xmm0,(%rsp)
173	mov	%rsp,%rdi
174	mov	%eax,16(%rsp)
175	xor	%rax,%rax
176	.byte	0xf3,0x0f,0xa6,0xc8	# rep xsha1
177	movaps	(%rsp),%xmm0
178	mov	16(%rsp),%eax
179	add	\$128+8,%rsp
180	movups	%xmm0,(%rdx)		# copy-out context
181	mov	%eax,16(%rdx)
182	ret
183.size	padlock_sha1_oneshot,.-padlock_sha1_oneshot
184
185.globl	padlock_sha1_blocks
186.type	padlock_sha1_blocks,\@function,3
187.align	16
188padlock_sha1_blocks:
189	mov	%rdx,%rcx
190	mov	%rdi,%rdx		# put aside %rdi
191	movups	(%rdi),%xmm0		# copy-in context
192	sub	\$128+8,%rsp
193	mov	16(%rdi),%eax
194	movaps	%xmm0,(%rsp)
195	mov	%rsp,%rdi
196	mov	%eax,16(%rsp)
197	mov	\$-1,%rax
198	.byte	0xf3,0x0f,0xa6,0xc8	# rep xsha1
199	movaps	(%rsp),%xmm0
200	mov	16(%rsp),%eax
201	add	\$128+8,%rsp
202	movups	%xmm0,(%rdx)		# copy-out context
203	mov	%eax,16(%rdx)
204	ret
205.size	padlock_sha1_blocks,.-padlock_sha1_blocks
206
207.globl	padlock_sha256_oneshot
208.type	padlock_sha256_oneshot,\@function,3
209.align	16
210padlock_sha256_oneshot:
211	mov	%rdx,%rcx
212	mov	%rdi,%rdx		# put aside %rdi
213	movups	(%rdi),%xmm0		# copy-in context
214	sub	\$128+8,%rsp
215	movups	16(%rdi),%xmm1
216	movaps	%xmm0,(%rsp)
217	mov	%rsp,%rdi
218	movaps	%xmm1,16(%rsp)
219	xor	%rax,%rax
220	.byte	0xf3,0x0f,0xa6,0xd0	# rep xsha256
221	movaps	(%rsp),%xmm0
222	movaps	16(%rsp),%xmm1
223	add	\$128+8,%rsp
224	movups	%xmm0,(%rdx)		# copy-out context
225	movups	%xmm1,16(%rdx)
226	ret
227.size	padlock_sha256_oneshot,.-padlock_sha256_oneshot
228
229.globl	padlock_sha256_blocks
230.type	padlock_sha256_blocks,\@function,3
231.align	16
232padlock_sha256_blocks:
233	mov	%rdx,%rcx
234	mov	%rdi,%rdx		# put aside %rdi
235	movups	(%rdi),%xmm0		# copy-in context
236	sub	\$128+8,%rsp
237	movups	16(%rdi),%xmm1
238	movaps	%xmm0,(%rsp)
239	mov	%rsp,%rdi
240	movaps	%xmm1,16(%rsp)
241	mov	\$-1,%rax
242	.byte	0xf3,0x0f,0xa6,0xd0	# rep xsha256
243	movaps	(%rsp),%xmm0
244	movaps	16(%rsp),%xmm1
245	add	\$128+8,%rsp
246	movups	%xmm0,(%rdx)		# copy-out context
247	movups	%xmm1,16(%rdx)
248	ret
249.size	padlock_sha256_blocks,.-padlock_sha256_blocks
250
251.globl	padlock_sha512_blocks
252.type	padlock_sha512_blocks,\@function,3
253.align	16
254padlock_sha512_blocks:
255	mov	%rdx,%rcx
256	mov	%rdi,%rdx		# put aside %rdi
257	movups	(%rdi),%xmm0		# copy-in context
258	sub	\$128+8,%rsp
259	movups	16(%rdi),%xmm1
260	movups	32(%rdi),%xmm2
261	movups	48(%rdi),%xmm3
262	movaps	%xmm0,(%rsp)
263	mov	%rsp,%rdi
264	movaps	%xmm1,16(%rsp)
265	movaps	%xmm2,32(%rsp)
266	movaps	%xmm3,48(%rsp)
267	.byte	0xf3,0x0f,0xa6,0xe0	# rep xha512
268	movaps	(%rsp),%xmm0
269	movaps	16(%rsp),%xmm1
270	movaps	32(%rsp),%xmm2
271	movaps	48(%rsp),%xmm3
272	add	\$128+8,%rsp
273	movups	%xmm0,(%rdx)		# copy-out context
274	movups	%xmm1,16(%rdx)
275	movups	%xmm2,32(%rdx)
276	movups	%xmm3,48(%rdx)
277	ret
278.size	padlock_sha512_blocks,.-padlock_sha512_blocks
279___
280
281sub generate_mode {
282my ($mode,$opcode) = @_;
283# int padlock_$mode_encrypt(void *out, const void *inp,
284#		struct padlock_cipher_data *ctx, size_t len);
285$code.=<<___;
286.globl	padlock_${mode}_encrypt
287.type	padlock_${mode}_encrypt,\@function,4
288.align	16
289padlock_${mode}_encrypt:
290	push	%rbp
291	push	%rbx
292
293	xor	%eax,%eax
294	test	\$15,$ctx
295	jnz	.L${mode}_abort
296	test	\$15,$len
297	jnz	.L${mode}_abort
298	lea	.Lpadlock_saved_context(%rip),%rax
299	pushf
300	cld
301	call	_padlock_verify_ctx
302	lea	16($ctx),$ctx		# control word
303	xor	%eax,%eax
304	xor	%ebx,%ebx
305	testl	\$`1<<5`,($ctx)		# align bit in control word
306	jnz	.L${mode}_aligned
307	test	\$0x0f,$out
308	setz	%al			# !out_misaligned
309	test	\$0x0f,$inp
310	setz	%bl			# !inp_misaligned
311	test	%ebx,%eax
312	jnz	.L${mode}_aligned
313	neg	%rax
314	mov	\$$PADLOCK_CHUNK,$chunk
315	not	%rax			# out_misaligned?-1:0
316	lea	(%rsp),%rbp
317	cmp	$chunk,$len
318	cmovc	$len,$chunk		# chunk=len>PADLOCK_CHUNK?PADLOCK_CHUNK:len
319	and	$chunk,%rax		# out_misaligned?chunk:0
320	mov	$len,$chunk
321	neg	%rax
322	and	\$$PADLOCK_CHUNK-1,$chunk	# chunk%=PADLOCK_CHUNK
323	lea	(%rax,%rbp),%rsp
324	mov	\$$PADLOCK_CHUNK,%rax
325	cmovz	%rax,$chunk			# chunk=chunk?:PADLOCK_CHUNK
326___
327$code.=<<___				if ($mode eq "ctr32");
328.L${mode}_reenter:
329	mov	-4($ctx),%eax		# pull 32-bit counter
330	bswap	%eax
331	neg	%eax
332	and	\$`$PADLOCK_CHUNK/16-1`,%eax
333	mov	\$$PADLOCK_CHUNK,$chunk
334	shl	\$4,%eax
335	cmovz	$chunk,%rax
336	cmp	%rax,$len
337	cmova	%rax,$chunk		# don't let counter cross PADLOCK_CHUNK
338	cmovbe	$len,$chunk
339___
340$code.=<<___				if ($PADLOCK_PREFETCH{$mode});
341	cmp	$chunk,$len
342	ja	.L${mode}_loop
343	mov	$inp,%rax		# check if prefetch crosses page
344	cmp	%rsp,%rbp
345	cmove	$out,%rax
346	add	$len,%rax
347	neg	%rax
348	and	\$0xfff,%rax		# distance to page boundary
349	cmp	\$$PADLOCK_PREFETCH{$mode},%rax
350	mov	\$-$PADLOCK_PREFETCH{$mode},%rax
351	cmovae	$chunk,%rax		# mask=distance<prefetch?-prefetch:-1
352	and	%rax,$chunk
353	jz	.L${mode}_unaligned_tail
354___
355$code.=<<___;
356	jmp	.L${mode}_loop
357.align	16
358.L${mode}_loop:
359	cmp	$len,$chunk		# ctr32 artefact
360	cmova	$len,$chunk		# ctr32 artefact
361	mov	$out,%r8		# save parameters
362	mov	$inp,%r9
363	mov	$len,%r10
364	mov	$chunk,$len
365	mov	$chunk,%r11
366	test	\$0x0f,$out		# out_misaligned
367	cmovnz	%rsp,$out
368	test	\$0x0f,$inp		# inp_misaligned
369	jz	.L${mode}_inp_aligned
370	shr	\$3,$len
371	.byte	0xf3,0x48,0xa5		# rep movsq
372	sub	$chunk,$out
373	mov	$chunk,$len
374	mov	$out,$inp
375.L${mode}_inp_aligned:
376	lea	-16($ctx),%rax		# ivp
377	lea	16($ctx),%rbx		# key
378	shr	\$4,$len
379	.byte	0xf3,0x0f,0xa7,$opcode	# rep xcrypt*
380___
381$code.=<<___				if ($mode !~ /ecb|ctr/);
382	movdqa	(%rax),%xmm0
383	movdqa	%xmm0,-16($ctx)		# copy [or refresh] iv
384___
385$code.=<<___				if ($mode eq "ctr32");
386	mov	-4($ctx),%eax		# pull 32-bit counter
387	test	\$0xffff0000,%eax
388	jnz	.L${mode}_no_carry
389	bswap	%eax
390	add	\$0x10000,%eax
391	bswap	%eax
392	mov	%eax,-4($ctx)
393.L${mode}_no_carry:
394___
395$code.=<<___;
396	mov	%r8,$out		# restore parameters
397	mov	%r11,$chunk
398	test	\$0x0f,$out
399	jz	.L${mode}_out_aligned
400	mov	$chunk,$len
401	lea	(%rsp),$inp
402	shr	\$3,$len
403	.byte	0xf3,0x48,0xa5		# rep movsq
404	sub	$chunk,$out
405.L${mode}_out_aligned:
406	mov	%r9,$inp
407	mov	%r10,$len
408	add	$chunk,$out
409	add	$chunk,$inp
410	sub	$chunk,$len
411	mov	\$$PADLOCK_CHUNK,$chunk
412___
413					if (!$PADLOCK_PREFETCH{$mode}) {
414$code.=<<___;
415	jnz	.L${mode}_loop
416___
417					} else {
418$code.=<<___;
419	jz	.L${mode}_break
420	cmp	$chunk,$len
421	jae	.L${mode}_loop
422___
423$code.=<<___				if ($mode eq "ctr32");
424	mov	$len,$chunk
425	mov	$inp,%rax		# check if prefetch crosses page
426	cmp	%rsp,%rbp
427	cmove	$out,%rax
428	add	$len,%rax
429	neg	%rax
430	and	\$0xfff,%rax		# distance to page boundary
431	cmp	\$$PADLOCK_PREFETCH{$mode},%rax
432	mov	\$-$PADLOCK_PREFETCH{$mode},%rax
433	cmovae	$chunk,%rax
434	and	%rax,$chunk
435	jnz	.L${mode}_loop
436___
437$code.=<<___;
438.L${mode}_unaligned_tail:
439	xor	%eax,%eax
440	cmp	%rsp,%rbp
441	cmove	$len,%rax
442	mov	$out,%r8		# save parameters
443	mov	$len,$chunk
444	sub	%rax,%rsp		# alloca
445	shr	\$3,$len
446	lea	(%rsp),$out
447	.byte	0xf3,0x48,0xa5		# rep movsq
448	mov	%rsp,$inp
449	mov	%r8, $out		# restore parameters
450	mov	$chunk,$len
451	jmp	.L${mode}_loop
452.align	16
453.L${mode}_break:
454___
455					}
456$code.=<<___;
457	cmp	%rbp,%rsp
458	je	.L${mode}_done
459
460	pxor	%xmm0,%xmm0
461	lea	(%rsp),%rax
462.L${mode}_bzero:
463	movaps	%xmm0,(%rax)
464	lea	16(%rax),%rax
465	cmp	%rax,%rbp
466	ja	.L${mode}_bzero
467
468.L${mode}_done:
469	lea	(%rbp),%rsp
470	jmp	.L${mode}_exit
471
472.align	16
473.L${mode}_aligned:
474___
475$code.=<<___				if ($mode eq "ctr32");
476	mov	-4($ctx),%eax		# pull 32-bit counter
477	bswap	%eax
478	neg	%eax
479	and	\$0xffff,%eax
480	mov	\$`16*0x10000`,$chunk
481	shl	\$4,%eax
482	cmovz	$chunk,%rax
483	cmp	%rax,$len
484	cmova	%rax,$chunk		# don't let counter cross 2^16
485	cmovbe	$len,$chunk
486	jbe	.L${mode}_aligned_skip
487
488.L${mode}_aligned_loop:
489	mov	$len,%r10		# save parameters
490	mov	$chunk,$len
491	mov	$chunk,%r11
492
493	lea	-16($ctx),%rax		# ivp
494	lea	16($ctx),%rbx		# key
495	shr	\$4,$len		# len/=AES_BLOCK_SIZE
496	.byte	0xf3,0x0f,0xa7,$opcode	# rep xcrypt*
497
498	mov	-4($ctx),%eax		# pull 32-bit counter
499	bswap	%eax
500	add	\$0x10000,%eax
501	bswap	%eax
502	mov	%eax,-4($ctx)
503
504	mov	%r10,$len		# restore parameters
505	sub	%r11,$len
506	mov	\$`16*0x10000`,$chunk
507	jz	.L${mode}_exit
508	cmp	$chunk,$len
509	jae	.L${mode}_aligned_loop
510
511.L${mode}_aligned_skip:
512___
513$code.=<<___				if ($PADLOCK_PREFETCH{$mode});
514	lea	($inp,$len),%rbp
515	neg	%rbp
516	and	\$0xfff,%rbp		# distance to page boundary
517	xor	%eax,%eax
518	cmp	\$$PADLOCK_PREFETCH{$mode},%rbp
519	mov	\$$PADLOCK_PREFETCH{$mode}-1,%rbp
520	cmovae	%rax,%rbp
521	and	$len,%rbp		# remainder
522	sub	%rbp,$len
523	jz	.L${mode}_aligned_tail
524___
525$code.=<<___;
526	lea	-16($ctx),%rax		# ivp
527	lea	16($ctx),%rbx		# key
528	shr	\$4,$len		# len/=AES_BLOCK_SIZE
529	.byte	0xf3,0x0f,0xa7,$opcode	# rep xcrypt*
530___
531$code.=<<___				if ($mode !~ /ecb|ctr/);
532	movdqa	(%rax),%xmm0
533	movdqa	%xmm0,-16($ctx)		# copy [or refresh] iv
534___
535$code.=<<___				if ($PADLOCK_PREFETCH{$mode});
536	test	%rbp,%rbp		# check remainder
537	jz	.L${mode}_exit
538
539.L${mode}_aligned_tail:
540	mov	$out,%r8
541	mov	%rbp,$chunk
542	mov	%rbp,$len
543	lea	(%rsp),%rbp
544	sub	$len,%rsp
545	shr	\$3,$len
546	lea	(%rsp),$out
547	.byte	0xf3,0x48,0xa5		# rep movsq
548	lea	(%r8),$out
549	lea	(%rsp),$inp
550	mov	$chunk,$len
551	jmp	.L${mode}_loop
552___
553$code.=<<___;
554.L${mode}_exit:
555	mov	\$1,%eax
556	lea	8(%rsp),%rsp
557.L${mode}_abort:
558	pop	%rbx
559	pop	%rbp
560	ret
561.size	padlock_${mode}_encrypt,.-padlock_${mode}_encrypt
562___
563}
564
565&generate_mode("ecb",0xc8);
566&generate_mode("cbc",0xd0);
567&generate_mode("cfb",0xe0);
568&generate_mode("ofb",0xe8);
569&generate_mode("ctr32",0xd8);	# all 64-bit CPUs have working CTR...
570
571$code.=<<___;
572.asciz	"VIA Padlock x86_64 module, CRYPTOGAMS by <appro\@openssl.org>"
573.align	16
574.data
575.align	8
576.Lpadlock_saved_context:
577	.quad	0
578___
579$code =~ s/\`([^\`]*)\`/eval($1)/gem;
580
581print $code;
582
583close STDOUT;
584