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| author | Ralf Baechle <ralf@linux-mips.org> | 2013-05-09 17:57:30 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-05-09 17:57:30 +0200 |
| commit | b22d1b6a91ca4260f869e349179ae53f18c664db (patch) | |
| tree | 6ac6c2bd202100727638f02ae5037ec78144e8d5 /arch/mips/lib/strncpy_user.S | |
| parent | 5e0e61dd2c89c673f89fb57dcd3cc746dc0c1706 (diff) | |
| parent | 0ab2b7d08ea7226dc72ff0f8c05f470566facf7c (diff) | |
| download | olio-linux-3.10-b22d1b6a91ca4260f869e349179ae53f18c664db.tar.xz olio-linux-3.10-b22d1b6a91ca4260f869e349179ae53f18c664db.zip | |
Merge branch 'mti-next' of git://git.linux-mips.org/pub/scm/sjhill/linux-sjhill into mips-for-linux-next
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 |