/* | |
* 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, fault | |
FEXPORT(__strlen_user_nocheck_asm) | |
move v0, a0 | |
1: EX(lb, t0, (v0), fault) | |
PTR_ADDIU v0, 1 | |
bnez t0, 1b | |
PTR_SUBU v0, a0 | |
jr ra | |
END(__strlen_user_asm) | |
fault: move v0, zero | |
jr ra |