1/* SHA256 using sparc crypto opcodes.
2   Copyright (C) 2012-2022 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#include <sysdep.h>
20
21#define SHA256		\
22	.word	0x81b02840;
23
24	.text
25	.align	32
26ENTRY(__sha256_process_block_crop)
27	/* %o0=buffer, %o1=len, %o2=CTX */
28	ldx	[%o2 + 0x20], %g1
29	add	%g1, %o1, %g1
30	stx	%g1, [%o2 + 0x20]
31
32	ld	[%o2 + 0x00], %f0
33	ld	[%o2 + 0x04], %f1
34	ld	[%o2 + 0x08], %f2
35	ld	[%o2 + 0x0c], %f3
36	ld	[%o2 + 0x10], %f4
37	ld	[%o2 + 0x14], %f5
38	andcc	%o1, 0x7, %g0
39	ld	[%o2 + 0x18], %f6
40	bne,pn	%xcc, 10f
41	 ld	[%o2 + 0x1c], %f7
42
431:
44	ldd	[%o0 + 0x00], %f8
45	ldd	[%o0 + 0x08], %f10
46	ldd	[%o0 + 0x10], %f12
47	ldd	[%o0 + 0x18], %f14
48	ldd	[%o0 + 0x20], %f16
49	ldd	[%o0 + 0x28], %f18
50	ldd	[%o0 + 0x30], %f20
51	ldd	[%o0 + 0x38], %f22
52
53	SHA256
54
55	subcc	%o1, 0x40, %o1
56	bne,pt	%xcc, 1b
57	 add	%o0, 0x40, %o0
58
595:
60	st	%f0, [%o2 + 0x00]
61	st	%f1, [%o2 + 0x04]
62	st	%f2, [%o2 + 0x08]
63	st	%f3, [%o2 + 0x0c]
64	st	%f4, [%o2 + 0x10]
65	st	%f5, [%o2 + 0x14]
66	st	%f6, [%o2 + 0x18]
67	retl
68	 st	%f7, [%o2 + 0x1c]
6910:
70	alignaddr %o0, %g0, %o0
71
72	ldd	[%o0 + 0x00], %f10
731:
74	ldd	[%o0 + 0x08], %f12
75	ldd	[%o0 + 0x10], %f14
76	ldd	[%o0 + 0x18], %f16
77	ldd	[%o0 + 0x20], %f18
78	ldd	[%o0 + 0x28], %f20
79	ldd	[%o0 + 0x30], %f22
80	ldd	[%o0 + 0x38], %f24
81	ldd	[%o0 + 0x40], %f26
82
83	faligndata %f10, %f12, %f8
84	faligndata %f12, %f14, %f10
85	faligndata %f14, %f16, %f12
86	faligndata %f16, %f18, %f14
87	faligndata %f18, %f20, %f16
88	faligndata %f20, %f22, %f18
89	faligndata %f22, %f24, %f20
90	faligndata %f24, %f26, %f22
91
92	SHA256
93
94	subcc	%o1, 0x40, %o1
95	fsrc2	%f26, %f10
96	bne,pt	%xcc, 1b
97	 add	%o0, 0x40, %o0
98
99	ba,a,pt	%xcc, 5b
100END(__sha256_process_block_crop)
101