32 lines
983 B
C
32 lines
983 B
C
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/*
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* Copyright (C) 2024 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#if defined(__BIONIC__) && defined(__aarch64__)
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__attribute__((target("mte"))) static bool is_stack_mte_on() {
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alignas(16) int x = 0;
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void* p = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(&x) + (1UL << 57));
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void* p_cpy = p;
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__builtin_arm_stg(p);
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p = __builtin_arm_ldg(p);
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__builtin_arm_stg(&x);
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return p == p_cpy;
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}
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#endif
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