/* * 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, 1998, 1999, 2004 by Ralf Baechle * Copyright (c) 1999 Silicon Graphics, Inc. */ #include <asm/asm.h> #include <asm/asm-offsets.h> #include <asm/regdef.h> #define EX(insn,reg,addr,handler) \ 9: insn reg, addr; \ .section __ex_table,"a"; \ PTR 9b, handler; \ .previous /* * Return the size of a string (including the ending 0) * * Return 0 for error */ LEAF(__strlen_user_asm) LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok? and v0, a0 bnez v0, .Lfault FEXPORT(__strlen_user_nocheck_asm) move v0, a0 1: EX(lb, t0, (v0), .Lfault) PTR_ADDIU v0, 1 bnez t0, 1b PTR_SUBU v0, a0 jr ra END(__strlen_user_asm) .Lfault: move v0, zero jr ra