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Move SVE length check to a veneer (#502)
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,71 @@ | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // ---------------------------------------------------------------------------- | ||
| // Copyright 2024 Arm Limited | ||
| // | ||
| // 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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| /** | ||
| * @brief Application entry point second veneer. | ||
| * | ||
| * This module contains the second command line entry point veneer, used to | ||
| * validate that Arm SVE vector width matches the tool build. When used, it is | ||
| * compiled with SVE ISA support but without any vector legnth override, so it | ||
| * will see the native SVE vector length exposed to the application. | ||
| */ | ||
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| #include <cstdio> | ||
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| #if ASTCENC_SVE != 0 | ||
| #include <arm_sve.h> | ||
| #endif | ||
|
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| /** | ||
| * @brief The main entry point. | ||
| * | ||
| * @param argc The number of arguments. | ||
| * @param argv The vector of arguments. | ||
| * | ||
| * @return 0 on success, non-zero otherwise. | ||
| */ | ||
| int astcenc_main( | ||
| int argc, | ||
| char **argv); | ||
|
|
||
| /** | ||
| * @brief Print a formatted string to stderr. | ||
| */ | ||
| template<typename ... _Args> | ||
| static inline void print_error( | ||
| const char* format, | ||
| _Args...args | ||
| ) { | ||
| fprintf(stderr, format, args...); | ||
| } | ||
|
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| int astcenc_main_veneer( | ||
| int argc, | ||
| char **argv | ||
| ) { | ||
| #if ASTCENC_SVE != 0 | ||
| // svcntw() return compile-time length if used with -msve-vector-bits | ||
| if (svcntw() != ASTCENC_SVE) | ||
| { | ||
| int bits = ASTCENC_SVE * 32; | ||
| print_error("ERROR: Host SVE support is not a %u-bit implementation\n", bits); | ||
| return 1; | ||
| } | ||
| #endif | ||
|
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| return astcenc_main(argc, argv); | ||
| } |
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