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Commit fb2e6fdb authored by Al Viro's avatar Al Viro
Browse files

sparc32: debride memcpy.S a bit 



unreachable code, unused macros...

Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 70a6fcf3

arch/sparc/lib/memcpy.S

+0 −79
Original line number Original line Diff line number Diff line
@@ -59,88 +59,9 @@ x: 
	stb	%t0, [%dst - (offset) - 0x02]; \

	stb	%t0, [%dst - (offset) - 0x02]; \

	stb	%t1, [%dst - (offset) - 0x01];

	stb	%t1, [%dst - (offset) - 0x01];





/* Both these macros have to start with exactly the same insn */

#define RMOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \

	ldd	[%src - (offset) - 0x20], %t0; \

	ldd	[%src - (offset) - 0x18], %t2; \

	ldd	[%src - (offset) - 0x10], %t4; \

	ldd	[%src - (offset) - 0x08], %t6; \

	st	%t0, [%dst - (offset) - 0x20]; \

	st	%t1, [%dst - (offset) - 0x1c]; \

	st	%t2, [%dst - (offset) - 0x18]; \

	st	%t3, [%dst - (offset) - 0x14]; \

	st	%t4, [%dst - (offset) - 0x10]; \

	st	%t5, [%dst - (offset) - 0x0c]; \

	st	%t6, [%dst - (offset) - 0x08]; \

	st	%t7, [%dst - (offset) - 0x04];



#define RMOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \

	ldd	[%src - (offset) - 0x20], %t0; \

	ldd	[%src - (offset) - 0x18], %t2; \

	ldd	[%src - (offset) - 0x10], %t4; \

	ldd	[%src - (offset) - 0x08], %t6; \

	std	%t0, [%dst - (offset) - 0x20]; \

	std	%t2, [%dst - (offset) - 0x18]; \

	std	%t4, [%dst - (offset) - 0x10]; \

	std	%t6, [%dst - (offset) - 0x08];



#define RMOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \

	ldd	[%src + (offset) + 0x00], %t0; \

	ldd	[%src + (offset) + 0x08], %t2; \

	st	%t0, [%dst + (offset) + 0x00]; \

	st	%t1, [%dst + (offset) + 0x04]; \

	st	%t2, [%dst + (offset) + 0x08]; \

	st	%t3, [%dst + (offset) + 0x0c];



#define RMOVE_SHORTCHUNK(src, dst, offset, t0, t1) \

	ldub	[%src + (offset) + 0x00], %t0; \

	ldub	[%src + (offset) + 0x01], %t1; \

	stb	%t0, [%dst + (offset) + 0x00]; \

	stb	%t1, [%dst + (offset) + 0x01];



#define SMOVE_CHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, prev, shil, shir, offset2) \

	ldd	[%src + (offset) + 0x00], %t0; \

	ldd	[%src + (offset) + 0x08], %t2; \

	srl	%t0, shir, %t5; \

	srl	%t1, shir, %t6; \

	sll	%t0, shil, %t0; \

	or	%t5, %prev, %t5; \

	sll	%t1, shil, %prev; \

	or	%t6, %t0, %t0; \

	srl	%t2, shir, %t1; \

	srl	%t3, shir, %t6; \

	sll	%t2, shil, %t2; \

	or	%t1, %prev, %t1; \

	std	%t4, [%dst + (offset) + (offset2) - 0x04]; \

	std	%t0, [%dst + (offset) + (offset2) + 0x04]; \

	sll	%t3, shil, %prev; \

	or	%t6, %t2, %t4;



#define SMOVE_ALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, prev, shil, shir, offset2) \

	ldd	[%src + (offset) + 0x00], %t0; \

	ldd	[%src + (offset) + 0x08], %t2; \

	srl	%t0, shir, %t4;	\

	srl	%t1, shir, %t5;	\

	sll	%t0, shil, %t6;	\

	or	%t4, %prev, %t0; \

	sll	%t1, shil, %prev; \

	or	%t5, %t6, %t1; \

	srl	%t2, shir, %t4;	\

	srl	%t3, shir, %t5;	\

	sll	%t2, shil, %t6; \

	or	%t4, %prev, %t2; \

	sll	%t3, shil, %prev; \

	or	%t5, %t6, %t3; \

	std	%t0, [%dst + (offset) + (offset2) + 0x00]; \

	std	%t2, [%dst + (offset) + (offset2) + 0x08];



	.text

	.text

	.align	4

	.align	4





0:

	retl

	 nop		! Only bcopy returns here and it retuns void...



FUNC(memmove)

FUNC(memmove)

EXPORT_SYMBOL(memmove)

EXPORT_SYMBOL(memmove)

	cmp		%o0, %o1

	cmp		%o0, %o1