diff options
Diffstat (limited to 'arch/microblaze/lib/memmove.c')
| -rw-r--r-- | arch/microblaze/lib/memmove.c | 36 |
1 files changed, 8 insertions, 28 deletions
diff --git a/arch/microblaze/lib/memmove.c b/arch/microblaze/lib/memmove.c index 3611ce70415b..c1f08c484e20 100644 --- a/arch/microblaze/lib/memmove.c +++ b/arch/microblaze/lib/memmove.c @@ -30,31 +30,7 @@ #include <linux/compiler.h> #include <linux/string.h> -#ifdef __HAVE_ARCH_MEMMOVE -#ifndef CONFIG_OPT_LIB_FUNCTION -void *memmove(void *v_dst, const void *v_src, __kernel_size_t c) -{ - const char *src = v_src; - char *dst = v_dst; - - if (!c) - return v_dst; - - /* Use memcpy when source is higher than dest */ - if (v_dst <= v_src) - return memcpy(v_dst, v_src, c); - - /* copy backwards, from end to beginning */ - src += c; - dst += c; - - /* Simple, byte oriented memmove. */ - while (c--) - *--dst = *--src; - - return v_dst; -} -#else /* CONFIG_OPT_LIB_FUNCTION */ +#ifdef CONFIG_OPT_LIB_FUNCTION void *memmove(void *v_dst, const void *v_src, __kernel_size_t c) { const char *src = v_src; @@ -90,9 +66,11 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c) case 3: *--dst = *--src; --c; + fallthrough; case 2: *--dst = *--src; --c; + fallthrough; case 1: *--dst = *--src; --c; @@ -100,7 +78,7 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c) i_dst = (void *)dst; /* Choose a copy scheme based on the source */ - /* alignment relative to dstination. */ + /* alignment relative to destination. */ switch ((unsigned long)src & 3) { case 0x0: /* Both byte offsets are aligned */ @@ -201,15 +179,17 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c) switch (c) { case 4: *--dst = *--src; + fallthrough; case 3: *--dst = *--src; + fallthrough; case 2: *--dst = *--src; + fallthrough; case 1: *--dst = *--src; } return v_dst; } -#endif /* CONFIG_OPT_LIB_FUNCTION */ EXPORT_SYMBOL(memmove); -#endif /* __HAVE_ARCH_MEMMOVE */ +#endif /* CONFIG_OPT_LIB_FUNCTION */ |