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