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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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microblaze: Separate library optimized functions
memcpy/memmove/memset Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
parent
ccea0e6e49
commit
93e2e85139
3 changed files with 48 additions and 17 deletions
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@ -33,17 +33,24 @@
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#include <asm/system.h>
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#include <asm/system.h>
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#ifdef __HAVE_ARCH_MEMCPY
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#ifdef __HAVE_ARCH_MEMCPY
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#ifndef CONFIG_OPT_LIB_FUNCTION
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void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
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void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
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{
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{
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const char *src = v_src;
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const char *src = v_src;
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char *dst = v_dst;
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char *dst = v_dst;
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#ifndef CONFIG_OPT_LIB_FUNCTION
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/* Simple, byte oriented memcpy. */
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/* Simple, byte oriented memcpy. */
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while (c--)
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while (c--)
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*dst++ = *src++;
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*dst++ = *src++;
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return v_dst;
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return v_dst;
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#else
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}
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#else /* CONFIG_OPT_LIB_FUNCTION */
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void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
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{
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const char *src = v_src;
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char *dst = v_dst;
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/* The following code tries to optimize the copy by using unsigned
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/* The following code tries to optimize the copy by using unsigned
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* alignment. This will work fine if both source and destination are
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* alignment. This will work fine if both source and destination are
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* aligned on the same boundary. However, if they are aligned on
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* aligned on the same boundary. However, if they are aligned on
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@ -150,7 +157,7 @@ void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
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}
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}
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return v_dst;
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return v_dst;
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#endif
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}
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}
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#endif /* CONFIG_OPT_LIB_FUNCTION */
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EXPORT_SYMBOL(memcpy);
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EXPORT_SYMBOL(memcpy);
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#endif /* __HAVE_ARCH_MEMCPY */
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#endif /* __HAVE_ARCH_MEMCPY */
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@ -31,16 +31,12 @@
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#include <linux/string.h>
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#include <linux/string.h>
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#ifdef __HAVE_ARCH_MEMMOVE
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#ifdef __HAVE_ARCH_MEMMOVE
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#ifndef CONFIG_OPT_LIB_FUNCTION
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void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
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void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
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{
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{
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const char *src = v_src;
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const char *src = v_src;
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char *dst = v_dst;
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char *dst = v_dst;
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#ifdef CONFIG_OPT_LIB_FUNCTION
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const uint32_t *i_src;
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uint32_t *i_dst;
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#endif
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if (!c)
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if (!c)
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return v_dst;
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return v_dst;
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@ -48,7 +44,6 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
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if (v_dst <= v_src)
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if (v_dst <= v_src)
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return memcpy(v_dst, v_src, c);
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return memcpy(v_dst, v_src, c);
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#ifndef CONFIG_OPT_LIB_FUNCTION
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/* copy backwards, from end to beginning */
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/* copy backwards, from end to beginning */
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src += c;
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src += c;
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dst += c;
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dst += c;
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@ -58,7 +53,22 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
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*--dst = *--src;
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*--dst = *--src;
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return v_dst;
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return v_dst;
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#else
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}
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#else /* CONFIG_OPT_LIB_FUNCTION */
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void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
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{
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const char *src = v_src;
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char *dst = v_dst;
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const uint32_t *i_src;
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uint32_t *i_dst;
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if (!c)
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return v_dst;
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/* Use memcpy when source is higher than dest */
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if (v_dst <= v_src)
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return memcpy(v_dst, v_src, c);
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/* The following code tries to optimize the copy by using unsigned
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/* The following code tries to optimize the copy by using unsigned
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* alignment. This will work fine if both source and destination are
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* alignment. This will work fine if both source and destination are
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* aligned on the same boundary. However, if they are aligned on
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* aligned on the same boundary. However, if they are aligned on
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@ -169,7 +179,7 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
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*--dst = *--src;
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*--dst = *--src;
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}
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}
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return v_dst;
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return v_dst;
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#endif
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}
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}
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#endif /* CONFIG_OPT_LIB_FUNCTION */
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EXPORT_SYMBOL(memmove);
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EXPORT_SYMBOL(memmove);
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#endif /* __HAVE_ARCH_MEMMOVE */
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#endif /* __HAVE_ARCH_MEMMOVE */
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@ -31,17 +31,30 @@
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#include <linux/string.h>
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#include <linux/string.h>
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#ifdef __HAVE_ARCH_MEMSET
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#ifdef __HAVE_ARCH_MEMSET
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#ifndef CONFIG_OPT_LIB_FUNCTION
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void *memset(void *v_src, int c, __kernel_size_t n)
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void *memset(void *v_src, int c, __kernel_size_t n)
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{
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{
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char *src = v_src;
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char *src = v_src;
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#ifdef CONFIG_OPT_LIB_FUNCTION
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uint32_t *i_src;
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/* Truncate c to 8 bits */
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uint32_t w32 = 0;
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c = (c & 0xFF);
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#endif
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/* Simple, byte oriented memset or the rest of count. */
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while (n--)
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*src++ = c;
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return v_src;
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}
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#else /* CONFIG_OPT_LIB_FUNCTION */
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void *memset(void *v_src, int c, __kernel_size_t n)
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{
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char *src = v_src;
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uint32_t *i_src;
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uint32_t w32 = 0;
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/* Truncate c to 8 bits */
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/* Truncate c to 8 bits */
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c = (c & 0xFF);
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c = (c & 0xFF);
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#ifdef CONFIG_OPT_LIB_FUNCTION
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if (unlikely(c)) {
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if (unlikely(c)) {
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/* Make a repeating word out of it */
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/* Make a repeating word out of it */
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w32 = c;
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w32 = c;
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@ -72,12 +85,13 @@ void *memset(void *v_src, int c, __kernel_size_t n)
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src = (void *)i_src;
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src = (void *)i_src;
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}
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}
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#endif
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/* Simple, byte oriented memset or the rest of count. */
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/* Simple, byte oriented memset or the rest of count. */
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while (n--)
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while (n--)
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*src++ = c;
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*src++ = c;
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return v_src;
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return v_src;
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}
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}
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#endif /* CONFIG_OPT_LIB_FUNCTION */
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EXPORT_SYMBOL(memset);
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EXPORT_SYMBOL(memset);
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#endif /* __HAVE_ARCH_MEMSET */
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#endif /* __HAVE_ARCH_MEMSET */
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