/* SPDX-License-Identifier: GPL-2.0-or-later *//* * String handling functions for PowerPC. * * Copyright (C) 1996 Paul Mackerras. */#include <asm/ppc_asm.h>#include <asm/export.h>#include <asm/cache.h> 	.text	/* This clears out any unused part of the destination buffer,   just as the libc version does.  -- paulus */_GLOBAL(strncpy)	PPC_LCMPI 0,r5,0	beqlr	mtctr	r5	addi	r6,r3,-1	addi	r4,r4,-1	.balign IFETCH_ALIGN_BYTES1:	lbzu	r0,1(r4)	cmpwi	0,r0,0	stbu	r0,1(r6)	bdnzf	2,1b		/* dec ctr, branch if ctr != 0 && !cr0.eq */	bnelr			/* if we didn't hit a null char, we're done */	mfctr	r5	PPC_LCMPI 0,r5,0	/* any space left in destination buffer? */	beqlr			/* we know r0 == 0 here */2:	stbu	r0,1(r6)	/* clear it out if so */	bdnz	2b	blrEXPORT_SYMBOL(strncpy) _GLOBAL(strncmp)	PPC_LCMPI 0,r5,0	beq-	2f	mtctr	r5	addi	r5,r3,-1	addi	r4,r4,-1	.balign IFETCH_ALIGN_BYTES1:	lbzu	r3,1(r5)	cmpwi	1,r3,0	lbzu	r0,1(r4)	subf.	r3,r0,r3	beqlr	1	bdnzt	eq,1b	blr2:	li	r3,0	blrEXPORT_SYMBOL(strncmp) _GLOBAL(memchr)	PPC_LCMPI 0,r5,0	beq-	2f	mtctr	r5	addi	r3,r3,-1	.balign IFETCH_ALIGN_BYTES1:	lbzu	r0,1(r3)	cmpw	0,r0,r4	bdnzf	2,1b	beqlr2:	li	r3,0	blrEXPORT_SYMBOL(memchr)