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m68k: Remove arch-specific strncpy() implementation

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strncpy() has no remaining callers in the kernel[1]. Remove the
m68k-specific inline assembly implementation and __HAVE_ARCH_STRNCPY
define, falling back to the generic version in lib/string.c.

Link: https://github.com/KSPP/linux/issues/90 [1]
Signed-off-by: Kees Cook <kees@kernel.org>
This commit is contained in:
Kees Cook 2026-03-23 01:16:06 +00:00
parent 4cb5e246e6
commit ad3242a9ac
1 changed files with 0 additions and 17 deletions
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17
arch/m68k/include/asm/string.h
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@ -21,23 +21,6 @@ static inline size_t strnlen(const char *s, size_t count)
return sc - s;
}
#define __HAVE_ARCH_STRNCPY
static inline char *strncpy(char *dest, const char *src, size_t n)
{
char *xdest = dest;
asm volatile ("\n"
" jra 2f\n"
"1: move.b (%1),(%0)+\n"
" jeq 2f\n"
" addq.l #1,%1\n"
"2: subq.l #1,%2\n"
" jcc 1b\n"
: "+a" (dest), "+a" (src), "+d" (n)
: : "memory");
return xdest;
}
#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *, const void *, __kernel_size_t);