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| // Copyright 2023 Rivos Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| #include <assert.h> | ||
| #include <byteswap.h> | ||
| #include <inttypes.h> | ||
| #include <stdarg.h> | ||
| #include <stdbool.h> | ||
| #include <stdint.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
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| #include "log.h" | ||
| #include "vlen-bits.h" | ||
| #include "zvkg.h" | ||
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| // @brief Return a 32-bit randomly generated number using rand() | ||
| // | ||
| // @return uint32_t | ||
| // | ||
| uint32_t | ||
| rand32() | ||
| { | ||
| return rand(); | ||
| } | ||
|
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| // @brief Tests vectorized multiply in Galois Field instruction vgmul | ||
| // using randomly generated test vectors. | ||
| // | ||
| // 'vghsh.vv' is used to generate the "golden" outputs that we check vgmul | ||
| // against. The correctness of vghsh is established in the test 'aes-gcm-test'. | ||
| // | ||
| int | ||
| test_rand_vgmul() | ||
| { | ||
| #define kNumGroups 113 | ||
| #define kNumElements (4 * (kNumGroups)) | ||
| #define kRounds 100 | ||
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| uint32_t y[kNumElements]; | ||
| uint32_t z[kNumElements]; | ||
| uint32_t expected[kNumElements]; | ||
| uint32_t actual[kNumElements]; | ||
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| LOG("--- Testing vgmul against vghsh"); | ||
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| for (size_t round = 0; round < kRounds; ++round) { | ||
| for (size_t i = 0; i < kNumElements; ++i) { | ||
| actual[i] = expected[i] = rand32(); | ||
| y[i] = rand32(); | ||
| z[i] = 0; | ||
| } | ||
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| // The reference (expected) output is produced by vghsh | ||
| zvkg_vghsh_vv(expected, z, y, kNumGroups); | ||
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| // The tested (actual) output is produced by vgmul | ||
| zvkg_vgmul_vv(actual, y, kNumGroups); | ||
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| if (memcmp(actual, expected, sizeof(actual))) { | ||
| LOG("FAILURE: 'actual' does NOT match 'expected'"); | ||
| for (size_t i = 0; i < kNumElements; ++i) { | ||
| const uint32_t exp = expected[i]; | ||
| const uint32_t act = actual[i]; | ||
| LOG("expected[%3zd]: 0x%08" PRIx32 | ||
| ", actual[%3zd]: 0x%08" PRIx32 | ||
| " %s", i, exp, i, act, (exp == act ? "==" : "!=")); | ||
| } | ||
| return 1; | ||
| } | ||
| } | ||
|
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| return 0; | ||
| } | ||
|
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| // @brief Calls test functions for our intrinsics | ||
| // | ||
| // @return int | ||
| // | ||
| int | ||
| main() | ||
| { | ||
| const uint64_t vlen = vlen_bits(); | ||
| LOG("VLEN = %" PRIu64, vlen); | ||
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| int res = 0; | ||
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| // The correctness of 'vghsh.vv' is established in the test 'aes-gcm-test', | ||
| // so this test is only there to validate 'vgmul.vv'. | ||
| res = test_rand_vgmul(); | ||
| if (res != 0) { | ||
| return res; | ||
| } | ||
|
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||
| return 0; | ||
| } |
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