| 1 | //===-- Implementation of memset_explicit ---------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/string/memset_explicit.h" |
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| 10 | #include "src/__support/common.h" |
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| 11 | #include "src/__support/macros/config.h" |
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| 12 | #include "src/string/memory_utils/inline_memset.h" |
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| 13 | |
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| 14 | namespace LIBC_NAMESPACE_DECL { |
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| 15 | |
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| 16 | [[gnu::noinline]] LLVM_LIBC_FUNCTION(void *, memset_explicit, |
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| 17 | (void *dst, int value, size_t count)) { |
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| 18 | // Use the inline memset function to set the memory. |
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| 19 | inline_memset(dst, static_cast<uint8_t>(value), count); |
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| 20 | // avoid dead store elimination |
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| 21 | // The asm itself should also be sufficient to behave as a compiler barrier. |
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| 22 | asm("" : : "r" (dst) : "memory" ); |
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| 23 | return dst; |
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| 24 | } |
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| 25 | |
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| 26 | } // namespace LIBC_NAMESPACE_DECL |
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| 27 | |
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