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Commit 1180b28c authored by Michal Simek's avatar Michal Simek
Browse files

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: default avatarMichal Simek <monstr@monstr.eu>
parent 93e2e851

arch/microblaze/lib/memcpy.c

+30 −3
Original line number Diff line number Diff line
@@ -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;

arch/microblaze/lib/memmove.c

+30 −3
Original line number Diff line number Diff line
@@ -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;