patch-2.3.30 linux/arch/ppc/chrpboot/string.S

• Lines: 207
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.29/linux/arch/ppc/chrpboot/string.S
• Orig date: Mon Jan 12 15:18:13 1998

diff -u --recursive --new-file v2.3.29/linux/arch/ppc/chrpboot/string.S linux/arch/ppc/chrpboot/string.S
@@ -1,206 +0,0 @@
-/*
- * String handling functions for PowerPC.
- *
- * Copyright (C) 1996 Paul Mackerras.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#define r0	0
-#define r3	3
-#define r4	4
-#define r5	5
-#define r6	6
-#define r7	7
-#define r8	8
-
-	.globl	strcpy
-strcpy:
-	addi	r5,r3,-1
-	addi	r4,r4,-1
-1:	lbzu	r0,1(r4)
-	cmpwi	0,r0,0
-	stbu	r0,1(r5)
-	bne	1b
-	blr
-
-	.globl	strncpy
-strncpy:
-	cmpwi	0,r5,0
-	beqlr
-	mtctr	r5
-	addi	r6,r3,-1
-	addi	r4,r4,-1
-1:	lbzu	r0,1(r4)
-	cmpwi	0,r0,0
-	stbu	r0,1(r6)
-	bdnzf	2,1b		/* dec ctr, branch if ctr != 0 && !cr0.eq */
-	blr
-
-	.globl	strcat
-strcat:
-	addi	r5,r3,-1
-	addi	r4,r4,-1
-1:	lbzu	r0,1(r5)
-	cmpwi	0,r0,0
-	bne	1b
-	addi	r5,r5,-1
-1:	lbzu	r0,1(r4)
-	cmpwi	0,r0,0
-	stbu	r0,1(r5)
-	bne	1b
-	blr
-
-	.globl	strcmp
-strcmp:
-	addi	r5,r3,-1
-	addi	r4,r4,-1
-1:	lbzu	r3,1(r5)
-	cmpwi	1,r3,0
-	lbzu	r0,1(r4)
-	subf.	r3,r0,r3
-	beqlr	1
-	beq	1b
-	blr
-
-	.globl	strlen
-strlen:
-	addi	r4,r3,-1
-1:	lbzu	r0,1(r4)
-	cmpwi	0,r0,0
-	bne	1b
-	subf	r3,r3,r4
-	blr
-
-	.globl	memset
-memset:
-	rlwimi	r4,r4,8,16,23
-	rlwimi	r4,r4,16,0,15
-	addi	r6,r3,-4
-	cmplwi	0,r5,4
-	blt	7f
-	stwu	r4,4(r6)
-	beqlr
-	andi.	r0,r6,3
-	add	r5,r0,r5
-	subf	r6,r0,r6
-	rlwinm	r0,r5,32-2,2,31
-	mtctr	r0
-	bdz	6f
-1:	stwu	r4,4(r6)
-	bdnz	1b
-6:	andi.	r5,r5,3
-7:	cmpwi	0,r5,0
-	beqlr
-	mtctr	r5
-	addi	r6,r6,3
-8:	stbu	r4,1(r6)
-	bdnz	8b
-	blr
-
-	.globl	bcopy
-bcopy:
-	mr	r6,r3
-	mr	r3,r4
-	mr	r4,r6
-	b	memcpy
-
-	.globl	memmove
-memmove:
-	cmplw	0,r3,r4
-	bgt	backwards_memcpy
-	/* fall through */
-
-	.globl	memcpy
-memcpy:
-	rlwinm.	r7,r5,32-3,3,31		/* r0 = r5 >> 3 */
-	addi	r6,r3,-4
-	addi	r4,r4,-4
-	beq	2f			/* if less than 8 bytes to do */
-	andi.	r0,r6,3			/* get dest word aligned */
-	mtctr	r7
-	bne	5f
-1:	lwz	r7,4(r4)
-	lwzu	r8,8(r4)
-	stw	r7,4(r6)
-	stwu	r8,8(r6)
-	bdnz	1b
-	andi.	r5,r5,7
-2:	cmplwi	0,r5,4
-	blt	3f
-	lwzu	r0,4(r4)
-	addi	r5,r5,-4
-	stwu	r0,4(r6)
-3:	cmpwi	0,r5,0
-	beqlr
-	mtctr	r5
-	addi	r4,r4,3
-	addi	r6,r6,3
-4:	lbzu	r0,1(r4)
-	stbu	r0,1(r6)
-	bdnz	4b
-	blr
-5:	subfic	r0,r0,4
-	mtctr	r0
-6:	lbz	r7,4(r4)
-	addi	r4,r4,1
-	stb	r7,4(r6)
-	addi	r6,r6,1
-	bdnz	6b
-	subf	r5,r0,r5
-	rlwinm.	r7,r5,32-3,3,31
-	beq	2b
-	mtctr	r7
-	b	1b
-
-	.globl	backwards_memcpy
-backwards_memcpy:
-	rlwinm.	r7,r5,32-3,3,31		/* r0 = r5 >> 3 */
-	add	r6,r3,r5
-	add	r4,r4,r5
-	beq	2f
-	andi.	r0,r6,3
-	mtctr	r7
-	bne	5f
-1:	lwz	r7,-4(r4)
-	lwzu	r8,-8(r4)
-	stw	r7,-4(r6)
-	stwu	r8,-8(r6)
-	bdnz	1b
-	andi.	r5,r5,7
-2:	cmplwi	0,r5,4
-	blt	3f
-	lwzu	r0,-4(r4)
-	subi	r5,r5,4
-	stwu	r0,-4(r6)
-3:	cmpwi	0,r5,0
-	beqlr
-	mtctr	r5
-4:	lbzu	r0,-1(r4)
-	stbu	r0,-1(r6)
-	bdnz	4b
-	blr
-5:	mtctr	r0
-6:	lbzu	r7,-1(r4)
-	stbu	r7,-1(r6)
-	bdnz	6b
-	subf	r5,r0,r5
-	rlwinm.	r7,r5,32-3,3,31
-	beq	2b
-	mtctr	r7
-	b	1b
-
-	.globl	memcmp
-memcmp:
-	cmpwi	0,r5,0
-	blelr
-	mtctr	r5
-	addi	r6,r3,-1
-	addi	r4,r4,-1
-1:	lbzu	r3,1(r6)
-	lbzu	r0,1(r4)
-	subf.	r3,r0,r3
-	bdnzt	2,1b
-	blr