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authorMichal Simek <monstr@monstr.eu>2010-10-09 14:05:58 +1000
committerMichal Simek <monstr@monstr.eu>2010-10-21 15:52:02 +1000
commit1180b28ca82c529972bfd438467d5cd71cca5372 (patch)
treea97ade3a37875493a06fabfed24d3075f4c61f60 /arch/microblaze/lib
parent93e2e85139509338c68279c7260ebb68177b23a9 (diff)
downloadlinux-1180b28ca82c529972bfd438467d5cd71cca5372.tar.gz
microblaze: Support C optimized lib functions for little-endian
Optimized C library functions can rapidly speedup the kernel. memset doesn't need to be optimized because there is no difference in behavior on little/big endian cpu. Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/lib')
-rw-r--r--arch/microblaze/lib/memcpy.c33
-rw-r--r--arch/microblaze/lib/memmove.c33
2 files changed, 60 insertions, 6 deletions
diff --git a/arch/microblaze/lib/memcpy.c b/arch/microblaze/lib/memcpy.c
index ab2d115f9ee..cc495d7d99c 100644
--- a/arch/microblaze/lib/memcpy.c
+++ b/arch/microblaze/lib/memcpy.c
@@ -93,7 +93,7 @@ void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
case 0x1: /* Unaligned - Off by 1 */
/* Word align the source */
i_src = (const void *) ((unsigned)src & ~3);
-
+#ifndef __MICROBLAZEEL__
/* Load the holding buffer */
buf_hold = *i_src++ << 8;
@@ -102,7 +102,16 @@ void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
*i_dst++ = buf_hold | value >> 24;
buf_hold = value << 8;
}
+#else
+ /* Load the holding buffer */
+ buf_hold = (*i_src++ & 0xFFFFFF00) >>8;
+ for (; c >= 4; c -= 4) {
+ value = *i_src++;
+ *i_dst++ = buf_hold | ((value & 0xFF) << 24);
+ buf_hold = (value & 0xFFFFFF00) >>8;
+ }
+#endif
/* Realign the source */
src = (const void *)i_src;
src -= 3;
@@ -110,7 +119,7 @@ void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
case 0x2: /* Unaligned - Off by 2 */
/* Word align the source */
i_src = (const void *) ((unsigned)src & ~3);
-
+#ifndef __MICROBLAZEEL__
/* Load the holding buffer */
buf_hold = *i_src++ << 16;
@@ -119,7 +128,16 @@ void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
*i_dst++ = buf_hold | value >> 16;
buf_hold = value << 16;
}
+#else
+ /* Load the holding buffer */
+ buf_hold = (*i_src++ & 0xFFFF0000 )>>16;
+ for (; c >= 4; c -= 4) {
+ value = *i_src++;
+ *i_dst++ = buf_hold | ((value & 0xFFFF)<<16);
+ buf_hold = (value & 0xFFFF0000) >>16;
+ }
+#endif
/* Realign the source */
src = (const void *)i_src;
src -= 2;
@@ -127,7 +145,7 @@ void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
case 0x3: /* Unaligned - Off by 3 */
/* Word align the source */
i_src = (const void *) ((unsigned)src & ~3);
-
+#ifndef __MICROBLAZEEL__
/* Load the holding buffer */
buf_hold = *i_src++ << 24;
@@ -136,7 +154,16 @@ void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
*i_dst++ = buf_hold | value >> 8;
buf_hold = value << 24;
}
+#else
+ /* Load the holding buffer */
+ buf_hold = (*i_src++ & 0xFF000000) >> 24;
+ for (; c >= 4; c -= 4) {
+ value = *i_src++;
+ *i_dst++ = buf_hold | ((value & 0xFFFFFF) << 8);
+ buf_hold = (value & 0xFF000000) >> 24;
+ }
+#endif
/* Realign the source */
src = (const void *)i_src;
src -= 1;
diff --git a/arch/microblaze/lib/memmove.c b/arch/microblaze/lib/memmove.c
index 1d3c0e7990e..123e3616f2d 100644
--- a/arch/microblaze/lib/memmove.c
+++ b/arch/microblaze/lib/memmove.c
@@ -114,7 +114,7 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
case 0x1: /* Unaligned - Off by 1 */
/* Word align the source */
i_src = (const void *) (((unsigned)src + 4) & ~3);
-
+#ifndef __MICROBLAZEEL__
/* Load the holding buffer */
buf_hold = *--i_src >> 24;
@@ -123,7 +123,16 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
*--i_dst = buf_hold << 8 | value;
buf_hold = value >> 24;
}
+#else
+ /* Load the holding buffer */
+ buf_hold = (*--i_src & 0xFF) << 24;
+ for (; c >= 4; c -= 4) {
+ value = *--i_src;
+ *--i_dst = buf_hold | ((value & 0xFFFFFF00)>>8);
+ buf_hold = (value & 0xFF) << 24;
+ }
+#endif
/* Realign the source */
src = (const void *)i_src;
src += 1;
@@ -131,7 +140,7 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
case 0x2: /* Unaligned - Off by 2 */
/* Word align the source */
i_src = (const void *) (((unsigned)src + 4) & ~3);
-
+#ifndef __MICROBLAZEEL__
/* Load the holding buffer */
buf_hold = *--i_src >> 16;
@@ -140,7 +149,16 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
*--i_dst = buf_hold << 16 | value;
buf_hold = value >> 16;
}
+#else
+ /* Load the holding buffer */
+ buf_hold = (*--i_src & 0xFFFF) << 16;
+ for (; c >= 4; c -= 4) {
+ value = *--i_src;
+ *--i_dst = buf_hold | ((value & 0xFFFF0000)>>16);
+ buf_hold = (value & 0xFFFF) << 16;
+ }
+#endif
/* Realign the source */
src = (const void *)i_src;
src += 2;
@@ -148,7 +166,7 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
case 0x3: /* Unaligned - Off by 3 */
/* Word align the source */
i_src = (const void *) (((unsigned)src + 4) & ~3);
-
+#ifndef __MICROBLAZEEL__
/* Load the holding buffer */
buf_hold = *--i_src >> 8;
@@ -157,7 +175,16 @@ void *memmove(void *v_dst, const void *v_src, __kernel_size_t c)
*--i_dst = buf_hold << 24 | value;
buf_hold = value >> 8;
}
+#else
+ /* Load the holding buffer */
+ buf_hold = (*--i_src & 0xFFFFFF) << 8;
+ for (; c >= 4; c -= 4) {
+ value = *--i_src;
+ *--i_dst = buf_hold | ((value & 0xFF000000)>> 24);
+ buf_hold = (value & 0xFFFFFF) << 8;;
+ }
+#endif
/* Realign the source */
src = (const void *)i_src;
src += 3;