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-rw-r--r--crypto/arch/aarch64/crypto_cpu_caps_darwin.c60
-rw-r--r--crypto/arch/aarch64/crypto_cpu_caps_linux.c62
-rw-r--r--crypto/arch/aarch64/crypto_cpu_caps_none.c26
-rw-r--r--crypto/arch/aarch64/crypto_cpu_caps_windows.c36
4 files changed, 184 insertions, 0 deletions
diff --git a/crypto/arch/aarch64/crypto_cpu_caps_darwin.c b/crypto/arch/aarch64/crypto_cpu_caps_darwin.c
new file mode 100644
index 0000000..1dd91b2
--- /dev/null
+++ b/crypto/arch/aarch64/crypto_cpu_caps_darwin.c
@@ -0,0 +1,60 @@
1/* $OpenBSD: crypto_cpu_caps.c,v 1.2 2024/11/12 13:52:31 jsing Exp $ */
2/*
3 * Copyright (c) 2025 Brent Cook <bcook@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <sys/sysctl.h>
19
20#include "crypto_arch.h"
21
22/* Machine dependent CPU capabilities. */
23uint64_t crypto_cpu_caps_aarch64;
24
25static uint64_t
26check_cpu_cap(const char *cap_name, uint64_t cap_flag)
27{
28 int has_cap = 0;
29 size_t len = sizeof(has_cap);
30
31 sysctlbyname(cap_name, &has_cap, &len, NULL, 0);
32
33 return has_cap ? cap_flag : 0;
34}
35
36void
37crypto_cpu_caps_init(void)
38{
39 crypto_cpu_caps_aarch64 = 0;
40
41 /* from https://developer.apple.com/documentation/kernel/1387446-sysctlbyname/determining_instruction_set_characteristics#3918855 */
42
43 crypto_cpu_caps_aarch64 |= check_cpu_cap("hw.optional.arm.FEAT_AES",
44 CRYPTO_CPU_CAPS_AARCH64_AES);
45
46 crypto_cpu_caps_aarch64 |= check_cpu_cap("hw.optional.arm.FEAT_PMULL",
47 CRYPTO_CPU_CAPS_AARCH64_PMULL);
48
49 crypto_cpu_caps_aarch64 |= check_cpu_cap("hw.optional.arm.FEAT_SHA1",
50 CRYPTO_CPU_CAPS_AARCH64_SHA1);
51
52 crypto_cpu_caps_aarch64 |= check_cpu_cap("hw.optional.arm.FEAT_SHA256",
53 CRYPTO_CPU_CAPS_AARCH64_SHA2);
54
55 crypto_cpu_caps_aarch64 |= check_cpu_cap("hw.optional.arm.FEAT_SHA512",
56 CRYPTO_CPU_CAPS_AARCH64_SHA512);
57
58 crypto_cpu_caps_aarch64 |= check_cpu_cap("hw.optional.arm.FEAT_SHA3",
59 CRYPTO_CPU_CAPS_AARCH64_SHA3);
60}
diff --git a/crypto/arch/aarch64/crypto_cpu_caps_linux.c b/crypto/arch/aarch64/crypto_cpu_caps_linux.c
new file mode 100644
index 0000000..ae28120
--- /dev/null
+++ b/crypto/arch/aarch64/crypto_cpu_caps_linux.c
@@ -0,0 +1,62 @@
1/* $OpenBSD: crypto_cpu_caps.c,v 1.2 2024/11/12 13:52:31 jsing Exp $ */
2/*
3 * Copyright (c) 2025 Brent Cook <bcook@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <sys/auxv.h>
19
20/* from arch/arm64/include/uapi/asm/hwcap.h */
21#define HWCAP_AES (1 << 3)
22#define HWCAP_PMULL (1 << 4)
23#define HWCAP_SHA1 (1 << 5)
24#define HWCAP_SHA2 (1 << 6)
25#define HWCAP_CRC32 (1 << 7)
26#define HWCAP_SHA3 (1 << 17)
27#define HWCAP_SHA512 (1 << 21)
28
29#include "crypto_arch.h"
30
31/* Machine dependent CPU capabilities. */
32uint64_t crypto_cpu_caps_aarch64;
33
34static uint64_t
35check_cpu_cap(unsigned long hwcap, uint64_t cap_flag)
36{
37 return (getauxval(AT_HWCAP) & hwcap) ? cap_flag : 0;
38}
39
40void
41crypto_cpu_caps_init(void)
42{
43 crypto_cpu_caps_aarch64 = 0;
44
45 crypto_cpu_caps_aarch64 |= check_cpu_cap(HWCAP_AES,
46 CRYPTO_CPU_CAPS_AARCH64_AES);
47
48 crypto_cpu_caps_aarch64 |= check_cpu_cap(HWCAP_PMULL,
49 CRYPTO_CPU_CAPS_AARCH64_PMULL);
50
51 crypto_cpu_caps_aarch64 |= check_cpu_cap(HWCAP_SHA1,
52 CRYPTO_CPU_CAPS_AARCH64_SHA1);
53
54 crypto_cpu_caps_aarch64 |= check_cpu_cap(HWCAP_SHA2,
55 CRYPTO_CPU_CAPS_AARCH64_SHA2);
56
57 crypto_cpu_caps_aarch64 |= check_cpu_cap(HWCAP_SHA512,
58 CRYPTO_CPU_CAPS_AARCH64_SHA512);
59
60 crypto_cpu_caps_aarch64 |= check_cpu_cap(HWCAP_SHA3,
61 CRYPTO_CPU_CAPS_AARCH64_SHA3);
62}
diff --git a/crypto/arch/aarch64/crypto_cpu_caps_none.c b/crypto/arch/aarch64/crypto_cpu_caps_none.c
new file mode 100644
index 0000000..dcd96b7
--- /dev/null
+++ b/crypto/arch/aarch64/crypto_cpu_caps_none.c
@@ -0,0 +1,26 @@
1/*
2 * Copyright (c) 2025 Brent Cook <bcook@openbsd.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include "crypto_arch.h"
18
19/* Machine dependent CPU capabilities. */
20uint64_t crypto_cpu_caps_aarch64;
21
22void
23crypto_cpu_caps_init(void)
24{
25 crypto_cpu_caps_aarch64 = 0;
26}
diff --git a/crypto/arch/aarch64/crypto_cpu_caps_windows.c b/crypto/arch/aarch64/crypto_cpu_caps_windows.c
new file mode 100644
index 0000000..e7cdded
--- /dev/null
+++ b/crypto/arch/aarch64/crypto_cpu_caps_windows.c
@@ -0,0 +1,36 @@
1/* $OpenBSD: crypto_cpu_caps.c,v 1.2 2024/11/12 13:52:31 jsing Exp $ */
2/*
3 * Copyright (c) 2025 Brent Cook <bcook@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <windows.h>
19
20#include "crypto_arch.h"
21
22/* Machine dependent CPU capabilities. */
23uint64_t crypto_cpu_caps_aarch64;
24
25void
26crypto_cpu_caps_init(void)
27{
28 crypto_cpu_caps_aarch64 = 0;
29
30 if (IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE)) {
31 crypto_cpu_caps_aarch64 |= CRYPTO_CPU_CAPS_AARCH64_AES;
32 crypto_cpu_caps_aarch64 |= CRYPTO_CPU_CAPS_AARCH64_PMULL;
33 crypto_cpu_caps_aarch64 |= CRYPTO_CPU_CAPS_AARCH64_SHA1;
34 crypto_cpu_caps_aarch64 |= CRYPTO_CPU_CAPS_AARCH64_SHA2;
35 }
36}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-10 16:04:36 +0000