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-rw-r--r--cross/lib/memset_explicit.c55
1 files changed, 0 insertions, 55 deletions
diff --git a/cross/lib/memset_explicit.c b/cross/lib/memset_explicit.c
deleted file mode 100644
index 6d21a5e8797..00000000000
--- a/cross/lib/memset_explicit.c
+++ /dev/null
@@ -1,55 +0,0 @@
-/* Erase sensitive data from memory.
- Copyright 2022-2023 Free Software Foundation, Inc.
-
- This file is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- This file is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <https://www.gnu.org/licenses/>. */
-
-#include <config.h>
-
-/* memset_s need this define */
-#if HAVE_MEMSET_S
-# define __STDC_WANT_LIB_EXT1__ 1
-#endif
-
-#include <string.h>
-
-/* Set S's bytes to C, where S has LEN bytes. The compiler will not
- optimize effects away, even if S is dead after the call. */
-void *
-memset_explicit (void *s, int c, size_t len)
-{
-#if HAVE_EXPLICIT_MEMSET
- return explicit_memset (s, c, len);
-#elif HAVE_MEMSET_S
- (void) memset_s (s, len, c, len);
- return s;
-#elif defined __GNUC__ && !defined __clang__
- memset (s, c, len);
- /* Compiler barrier. */
- __asm__ volatile ("" ::: "memory");
- return s;
-#elif defined __clang__
- memset (s, c, len);
- /* Compiler barrier. */
- /* With asm ("" ::: "memory") LLVM analyzes uses of 's' and finds that the
- whole thing is dead and eliminates it. Use 'g' to work around this
- problem. See <https://bugs.llvm.org/show_bug.cgi?id=15495#c11>. */
- __asm__ volatile ("" : : "g"(s) : "memory");
- return s;
-#else
- /* Invoke memset through a volatile function pointer. This defeats compiler
- optimizations. */
- void * (* const volatile volatile_memset) (void *, int, size_t) = memset;
- return volatile_memset (s, c, len);
-#endif
-}