/* * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (c) 1996, 1999 by Ralf Baechle */#include <linux/errno.h>#include <asm/asm.h>#include <asm/offset.h>#include <asm/regdef.h>#define EX(insn,reg,addr,handler)			\9:	insn	reg, addr;				\	.section __ex_table,"a";			\	PTR	9b, handler;				\	.previous/* * Returns: -EFAULT if exception before terminator, N if the entire * buffer filled, else strlen. *//* * Ugly special case have to check: we might get passed a user space * pointer which wraps into the kernel space.  We don't deal with that.  If * it happens at most some bytes of the exceptions handlers will be copied. */LEAF(__strncpy_from_user_asm)	lw	v0, THREAD_CURDS($28)	# pointer ok?	and	v0, a1	bltz	v0, faultEXPORT(__strncpy_from_user_nocheck_asm)	move	v0, zero	move	v1, a1	.set	noreorder1:	EX(lbu,	 t0, (v1), fault)	addiu	v1, v1, 1	beqz	t0, 2f	 sb	t0, (a0)	addiu	v0, 1	bne	v0, a2, 1b	 addiu	a0, 1	.set	reorder2:	addu	t0, a1, v0	xor	t0, a1	bltz	t0, fault	jr	ra				# return n	END(__strncpy_from_user_asm)fault:	li	v0, -EFAULT	jr	ra	.section __ex_table,"a"	PTR	1b, fault	.previous