diff options
Diffstat (limited to 'src/common/cpuinfo/target')
-rw-r--r-- | src/common/cpuinfo/target/CpuInfoSveUtils.cpp | 40 | ||||
-rw-r--r-- | src/common/cpuinfo/target/CpuInfoSveUtils.h | 40 |
2 files changed, 80 insertions, 0 deletions
diff --git a/src/common/cpuinfo/target/CpuInfoSveUtils.cpp b/src/common/cpuinfo/target/CpuInfoSveUtils.cpp new file mode 100644 index 0000000000..750a1b01d1 --- /dev/null +++ b/src/common/cpuinfo/target/CpuInfoSveUtils.cpp @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2021 Arm Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "src/common/cpuinfo/target/CpuInfoSveUtils.h" + +namespace arm_compute +{ +namespace cpuinfo +{ +uint64_t get_sve_feature_reg() +{ + uint64_t reg = 0; +#if defined(ENABLE_SVE) + __asm __volatile("MRS %0, ID_AA64ZFR0_EL1" + : "=r"(reg)); +#endif /* defined(DENABLE_SVE) */ + return reg; +} +} // namespace cpuinfo +} // namespace arm_compute diff --git a/src/common/cpuinfo/target/CpuInfoSveUtils.h b/src/common/cpuinfo/target/CpuInfoSveUtils.h new file mode 100644 index 0000000000..73862b131c --- /dev/null +++ b/src/common/cpuinfo/target/CpuInfoSveUtils.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2021 Arm Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef SRC_COMMON_CPUINFO_TARGET_CPUINFO_SVE_UTILS_H +#define SRC_COMMON_CPUINFO_TARGET_CPUINFO_SVE_UTILS_H + +#include <cstdint> + +namespace arm_compute +{ +namespace cpuinfo +{ +/** Returns the contents of the SVE feature register (ID_AA64ZFR0_EL1) + * + * @return uint64_t The value of the register + */ +uint64_t get_sve_feature_reg(); +} // namespace cpuinfo +} // namespace arm_compute +#endif /* SRC_COMMON_CPUINFO_CPUISAINFO_H */ |