patch-2.1.44 linux/arch/sparc64/lib/memset.S

• Lines: 197
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.43/linux/arch/sparc64/lib/memset.S
• Orig date: Mon Jun 16 16:35:54 1997

diff -u --recursive --new-file v2.1.43/linux/arch/sparc64/lib/memset.S linux/arch/sparc64/lib/memset.S
@@ -1,196 +0,0 @@
-/* linux/arch/sparc64/lib/memset.S: Sparc optimized memset, bzero and clear_user code
- * Copyright (C) 1991,1996 Free Software Foundation
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- *
- * Returns 0, if ok, and number of bytes not yet set if exception
- * occurs and we were called as clear_user.
- */
-
-#include <asm/asi.h>
-#include <asm/ptrace.h>
-
-#define EX(x,y,a,b,z) 				\
-98: 	x,y;					\
-	.section .fixup,z##alloc,z##execinstr;	\
-	.align	4;				\
-99:	ba,pt	%xcc, 30f;			\
-	 a, b, %o0;				\
-	.section __ex_table,z##alloc;		\
-	.align	8;				\
-	.xword	98b, 99b;			\
-	.text;					\
-	.align	4
-
-#define EXT(start,end,handler,z) 		\
-	.section __ex_table,z##alloc;		\
-	.align	8;				\
-	.xword	start, 0, end, handler;		\
-	.text;					\
-	.align	4
-
-/* Please don't change these macros, unless you change the logic
- * in the .fixup section below as well.
- * Store 64 bytes at (BASE + OFFSET) using value SOURCE. */
-#define ZERO_BIG_BLOCK(base, offset, source)    \
-	stxa	source, [base + offset + 0x00] %asi; \
-	stxa	source, [base + offset + 0x08] %asi; \
-	stxa	source, [base + offset + 0x10] %asi; \
-	stxa	source, [base + offset + 0x18] %asi; \
-	stxa	source, [base + offset + 0x20] %asi; \
-	stxa	source, [base + offset + 0x28] %asi; \
-	stxa	source, [base + offset + 0x30] %asi; \
-	stxa	source, [base + offset + 0x38] %asi;
-
-#define ZERO_LAST_BLOCKS(base, offset, source)	\
-	stxa	source, [base - offset - 0x38] %asi; \
-	stxa	source, [base - offset - 0x30] %asi; \
-	stxa	source, [base - offset - 0x28] %asi; \
-	stxa	source, [base - offset - 0x20] %asi; \
-	stxa	source, [base - offset - 0x18] %asi; \
-	stxa	source, [base - offset - 0x10] %asi; \
-	stxa	source, [base - offset - 0x08] %asi; \
-	stxa	source, [base - offset - 0x00] %asi;
-
-	.text
-	.align 4
-
-	.globl	__bzero, __memset, __bzero_noasi
-	.globl	memset, __memset_start, __memset_end
-__memset_start:
-__memset:
-memset:
-	and	%o1, 0xff, %g3
-	sll	%g3, 8, %g2
-	or	%g3, %g2, %g3
-	sll	%g3, 16, %g2
-	or	%g3, %g2, %g3
-	mov	%o2, %o1
-	wr	%g0, ASI_P, %asi
-	sllx	%g3, 32, %g2
-	ba,pt	%xcc, 1f
-	 or	%g3, %g2, %g3
-__bzero:
-	wr	%g0, ASI_P, %asi
-__bzero_noasi:
-	mov	%g0, %g3
-1:
-	cmp	%o1, 7
-	bleu,pn	%xcc, 7f
-	 andcc	%o0, 3, %o2
-
-	be,a,pt	%icc, 4f
-	 andcc	%o0, 4, %g0
-
-	cmp	%o2, 3
-	be,pn	%icc, 2f
-	 EX(stba	%g3, [%o0] %asi, sub %o1, 0,#)
-
-	cmp	%o2, 2
-	be,pt	%icc, 2f
-	 EX(stba	%g3, [%o0 + 0x01] %asi, sub %o1, 1,#)
-
-	EX(stba	%g3, [%o0 + 0x02] %asi, sub %o1, 2,#)
-2:
-	sub	%o2, 4, %o2
-	sub	%o0, %o2, %o0
-	add	%o1, %o2, %o1
-	andcc	%o0, 4, %g0
-4:
-	be,a,pt	%icc, 2f
-	 andncc	%o1, 0x7f, %o3
-
-	EX(sta	%g3, [%o0] %asi, sub %o1, 0,#)
-	sub	%o1, 4, %o1
-	add	%o0, 4, %o0
-	andncc	%o1, 0x7f, %o3		! Now everything is 8 aligned and o1 is len to run
-2:
-	be,pn	%xcc, 9f
-	 andcc	%o1, 0x78, %o2
-10:
-	ZERO_BIG_BLOCK(%o0, 0x00, %g3)
-	subcc	%o3, 128, %o3
-	ZERO_BIG_BLOCK(%o0, 0x40, %g3)
-11:
-	EXT(10b, 11b, 20f,#)
-	bne,pt	%xcc, 10b
-	 add	%o0, 128, %o0
-
-	tst	%o2
-9:
-	be,pn	%xcc, 13f
-	 andcc	%o1, 7, %o1
-14:
-	rd	%pc, %o4
-	srl	%o2, 1, %o3
-	sub	%o4, %o3, %o4
-	jmpl	%o4 + (13f - 14b), %g0
-	 add	%o0, %o2, %o0
-12:
-	ZERO_LAST_BLOCKS(%o0, 0x48, %g3)
-	ZERO_LAST_BLOCKS(%o0, 0x08, %g3)
-13:
-	be,pn	%icc, 8f
-	 andcc	%o1, 4, %g0
-
-	be,pn	%icc, 1f
-	 andcc	%o1, 2, %g0
-
-	EX(sta	%g3, [%o0] %asi, and %o1, 7,#)
-	add	%o0, 4, %o0
-1:
-	be,pn	%icc, 1f
-	 andcc	%o1, 1, %g0
-
-	EX(stha	%g3, [%o0] %asi, and %o1, 3,#)
-	add	%o0, 2, %o0
-1:
-	bne,a,pn %icc, 8f
-	 EX(stba	%g3, [%o0] %asi, and %o1, 1,#)
-8:
-	retl
-	 clr	%o0
-7:
-	be,pn	%icc, 13b
-	 orcc	%o1, 0, %g0
-
-	be,pn	%icc, 0f
-8:
-	 add	%o0, 1, %o0
-	subcc	%o1, 1, %o1
-	bne,a,pt %icc, 8b
-	 EX(stba	%g3, [%o0 - 1] %asi, add %o1, 1,#)
-0:
-	retl
-	 clr	%o0
-__memset_end:
-
-	.section .fixup,#alloc,#execinstr
-	.align	4
-20:
-	cmp	%g2, 8
-	bleu,pn	%xcc, 1f
-	 and	%o1, 0x7f, %o1
-	sub	%g2, 9, %g2
-	add	%o3, 64, %o3
-1:
-	sll	%g2, 3, %g2
-	add	%o3, %o1, %o0
-	ba,pt	%xcc, 30f
-	 sub	%o0, %g2, %o0
-21:
-	mov	8, %o0
-	and	%o1, 7, %o1
-	sub	%o0, %g2, %o0
-	sll	%o0, 3, %o0
-	ba,pt	%xcc, 30f
-	 add	%o0, %o1, %o0
-30:
-/* %o4 is faulting address, %o5 is %pc where fault occured */
-	save	%sp, -160, %sp
-	mov	%i5, %o0
-	mov	%i7, %o1
-	call	lookup_fault
-	 mov	%i4, %o2
-	ret
-	 restore