1 | #ifndef AWS_CHECKSUMS_PRIVATE_CPUID_H |
2 | #define AWS_CHECKSUMS_PRIVATE_CPUID_H |
3 | /* |
4 | * Copyright 2010-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. |
5 | * |
6 | * Licensed under the Apache License, Version 2.0 (the "License"). |
7 | * You may not use this file except in compliance with the License. |
8 | * A copy of the License is located at |
9 | * |
10 | * http://aws.amazon.com/apache2.0 |
11 | * |
12 | * or in the "license" file accompanying this file. This file is distributed |
13 | * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
14 | * express or implied. See the License for the specific language governing |
15 | * permissions and limitations under the License. |
16 | */ |
17 | #include <stdint.h> |
18 | |
19 | /*** |
20 | * runs cpu id and fills in capabilities for the current cpu architecture. |
21 | * returns non zero on success, zero on failure. If the operation was successful |
22 | * cpuid will be set with the bits from the cpuid call, otherwise they will be untouched. |
23 | **/ |
24 | int aws_checksums_do_cpu_id(int32_t *cpuid); |
25 | |
26 | /** Returns non-zero if the CPU supports the PCLMULQDQ instruction. */ |
27 | int aws_checksums_is_clmul_present(void); |
28 | |
29 | /** Returns non-zero if the CPU supports SSE4.1 instructions. */ |
30 | int aws_checksums_is_sse41_present(void); |
31 | |
32 | /** Returns non-zero if the CPU supports SSE4.2 instructions (i.e. CRC32). */ |
33 | int aws_checksums_is_sse42_present(void); |
34 | |
35 | #endif /* AWS_CHECKSUMS_PRIVATE_CPUID_H */ |
36 | |