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// 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.
// ----------------------------------------------------------------------------
/**
* @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.
*/
#include <cstdio>
#if ASTCENC_SVE != 0
#include <arm_sve.h>
#endif
/**
* @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...);
}
int astcenc_main_veneer(
int argc,
char **argv
) {
// We don't need this check for 128-bit SVE, because that is compiled as
// VLA code, using predicate masks in the augmented NEON.
#if ASTCENC_SVE > 4
// svcntw() returns 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
return astcenc_main(argc, argv);
}
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