diff options
Diffstat (limited to 'arch/mips/lib/strncpy_user.S')
| -rw-r--r-- | arch/mips/lib/strncpy_user.S | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/arch/mips/lib/strncpy_user.S b/arch/mips/lib/strncpy_user.S index bad53948750..92870b6b53e 100644 --- a/arch/mips/lib/strncpy_user.S +++ b/arch/mips/lib/strncpy_user.S @@ -3,7 +3,8 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (c) 1996, 1999 by Ralf Baechle + * Copyright (C) 1996, 1999 by Ralf Baechle + * Copyright (C) 2011 MIPS Technologies, Inc. */ #include <linux/errno.h> #include <asm/asm.h> @@ -33,26 +34,27 @@ LEAF(__strncpy_from_user_asm) bnez v0, .Lfault FEXPORT(__strncpy_from_user_nocheck_asm) - move v0, zero - move v1, a1 .set noreorder -1: EX(lbu, t0, (v1), .Lfault) + move t0, zero + move v1, a1 +1: EX(lbu, v0, (v1), .Lfault) PTR_ADDIU v1, 1 R10KCBARRIER(0(ra)) - beqz t0, 2f - sb t0, (a0) - PTR_ADDIU v0, 1 - .set reorder - PTR_ADDIU a0, 1 - bne v0, a2, 1b -2: PTR_ADDU t0, a1, v0 - xor t0, a1 - bltz t0, .Lfault + beqz v0, 2f + sb v0, (a0) + PTR_ADDIU t0, 1 + bne t0, a2, 1b + PTR_ADDIU a0, 1 +2: PTR_ADDU v0, a1, t0 + xor v0, a1 + bltz v0, .Lfault + nop jr ra # return n + move v0, t0 END(__strncpy_from_user_asm) -.Lfault: li v0, -EFAULT - jr ra +.Lfault: jr ra + li v0, -EFAULT .section __ex_table,"a" PTR 1b, .Lfault |