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Commit ae984d72 authored by David S. Miller's avatar David S. Miller
Browse files

sparc: Unify strlen assembler. 



Use the new asm/asm.h header to help commonize the
strlen assembler between 32-bit and 64-bit

While we're here, use proper linux/linkage.h macros
instead of by-hand stuff.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5c03d590

arch/sparc/lib/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ ccflags-y := -Werror 


lib-$(CONFIG_SPARC32) += mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o

lib-$(CONFIG_SPARC32) += memcpy.o memset.o

lib-y                 += strlen_$(BITS).o

lib-y                 += strlen.o

lib-y                 += checksum_$(BITS).o

lib-$(CONFIG_SPARC32) += blockops.o

lib-y                 += memscan_$(BITS).o memcmp_$(BITS).o strncmp_$(BITS).o

arch/sparc/lib/strlen_64.S→arch/sparc/lib/strlen.S

+20 −20
Original line number Diff line number Diff line 
/* strlen.S: Sparc64 optimized strlen code

/* strlen.S: Sparc optimized strlen code

 * Hand optimized from GNU libc's strlen

 * Copyright (C) 1991,1996 Free Software Foundation

 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)

 * Copyright (C) 1996,2008 David S. Miller (davem@davemloft.net)

 * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)

 */



#include <linux/linkage.h>

#include <asm/asm.h>



#define LO_MAGIC 0x01010101

#define HI_MAGIC 0x80808080



	.align	32

	.globl	strlen

	.type	strlen,#function

strlen:

	.text

ENTRY(strlen)

	mov	%o0, %o1

	andcc	%o0, 3, %g0

	be,pt	%icc, 9f

	BRANCH32(be, pt, 9f)

	 sethi	%hi(HI_MAGIC), %o4

	ldub	[%o0], %o5

	brz,pn	%o5, 11f

	BRANCH_REG_ZERO(pn, %o5, 11f)

	 add	%o0, 1, %o0

	andcc	%o0, 3, %g0

	be,pn	%icc, 4f

	BRANCH32(be, pn, 4f)

	 or	%o4, %lo(HI_MAGIC), %o3

	ldub	[%o0], %o5

	brz,pn	%o5, 12f

	BRANCH_REG_ZERO(pn, %o5, 12f)

	 add	%o0, 1, %o0

	andcc	%o0, 3, %g0

	be,pt	%icc, 5f

	BRANCH32(be, pt, 5f)

	 sethi	%hi(LO_MAGIC), %o4

	ldub	[%o0], %o5

	brz,pn	%o5, 13f

	BRANCH_REG_ZERO(pn, %o5, 13f)

	 add	%o0, 1, %o0

	ba,pt	%icc, 8f

	BRANCH32(ba, pt, 8f)

	 or	%o4, %lo(LO_MAGIC), %o2

9:

	or	%o4, %lo(HI_MAGIC), %o3
@@ -44,24 +45,24 @@ strlen: 
2:

	sub	%o5, %o2, %o4

	andcc	%o4, %o3, %g0

	be,pt	%icc, 8b

	BRANCH32(be, pt, 8b)

	 add	%o0, 4, %o0



	/* Check every byte. */

	srl	%o5, 24, %g7

	andcc	%g7, 0xff, %g0

	be,pn	%icc, 1f

	BRANCH32(be, pn, 1f)

	 add	%o0, -4, %o4

	srl	%o5, 16, %g7

	andcc	%g7, 0xff, %g0

	be,pn	%icc, 1f

	BRANCH32(be, pn, 1f)

	 add	%o4, 1, %o4

	srl	%o5, 8, %g7

	andcc	%g7, 0xff, %g0

	be,pn	%icc, 1f

	BRANCH32(be, pn, 1f)

	 add	%o4, 1, %o4

	andcc	%o5, 0xff, %g0

	bne,a,pt %icc, 2b

	BRANCH32_ANNUL(bne, pt, 2b)

	 ld	[%o0], %o5

	add	%o4, 1, %o4

1:
@@ -76,5 +77,4 @@ strlen: 
13:

	retl

	 mov	2, %o0



	.size	strlen, .-strlen
 
ENDPROC(strlen)

arch/sparc/lib/strlen_32.S

deleted100644 → 0
+0 −81
Original line number Diff line number Diff line 
/* strlen.S: Sparc optimized strlen code

 * Hand optimized from GNU libc's strlen

 * Copyright (C) 1991,1996 Free Software Foundation

 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)

 * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)

 */



#define LO_MAGIC 0x01010101

#define HI_MAGIC 0x80808080



0:

	ldub	[%o0], %o5

	cmp	%o5, 0

	be	1f

	 add	%o0, 1, %o0

	andcc	%o0, 3, %g0

	be	4f

	 or	%o4, %lo(HI_MAGIC), %o3

	ldub	[%o0], %o5

	cmp	%o5, 0

	be	2f

	 add	%o0, 1, %o0

	andcc	%o0, 3, %g0

	be	5f

	 sethi	%hi(LO_MAGIC), %o4

	ldub	[%o0], %o5

	cmp	%o5, 0

	be	3f

	 add	%o0, 1, %o0

	b	8f

	 or	%o4, %lo(LO_MAGIC), %o2

1:

	retl

	 mov	0, %o0

2:

	retl

	 mov	1, %o0

3:

	retl

	 mov	2, %o0



	.align 4

	.global strlen

strlen:

	mov	%o0, %o1

	andcc	%o0, 3, %g0

	bne	0b

	 sethi	%hi(HI_MAGIC), %o4

	or	%o4, %lo(HI_MAGIC), %o3

4:

	sethi	%hi(LO_MAGIC), %o4

5:

	or	%o4, %lo(LO_MAGIC), %o2

8:

	ld	[%o0], %o5

2:

	sub	%o5, %o2, %o4

	andcc	%o4, %o3, %g0

	be	8b

	 add	%o0, 4, %o0



	/* Check every byte. */

	srl	%o5, 24, %g5

	andcc	%g5, 0xff, %g0

	be	1f

	 add	%o0, -4, %o4

	srl	%o5, 16, %g5

	andcc	%g5, 0xff, %g0

	be	1f

	 add	%o4, 1, %o4

	srl	%o5, 8, %g5

	andcc	%g5, 0xff, %g0

	be	1f

	 add	%o4, 1, %o4

	andcc	%o5, 0xff, %g0

	bne,a	2b

	 ld	[%o0], %o5

	add	%o4, 1, %o4

1:

	retl

	 sub	%o4, %o1, %o0