From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/mips/lib/strlen_user.S | 61 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 kernel/arch/mips/lib/strlen_user.S (limited to 'kernel/arch/mips/lib/strlen_user.S') diff --git a/kernel/arch/mips/lib/strlen_user.S b/kernel/arch/mips/lib/strlen_user.S new file mode 100644 index 000000000..929bbacd6 --- /dev/null +++ b/kernel/arch/mips/lib/strlen_user.S @@ -0,0 +1,61 @@ +/* + * 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. + * Copyright (C) 2011 MIPS Technologies, Inc. + */ +#include +#include +#include + +#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 + */ + .macro __BUILD_STRLEN_ASM func +LEAF(__strlen_\func\()_asm) + LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok? + and v0, a0 + bnez v0, .Lfault\@ + + move v0, a0 +.ifeqs "\func", "kernel" +1: EX(lbu, v1, (v0), .Lfault\@) +.else +1: EX(lbue, v1, (v0), .Lfault\@) +.endif + PTR_ADDIU v0, 1 + bnez v1, 1b + PTR_SUBU v0, a0 + jr ra + END(__strlen_\func\()_asm) + +.Lfault\@: move v0, zero + jr ra + .endm + +#ifndef CONFIG_EVA + /* Set aliases */ + .global __strlen_user_asm + .set __strlen_user_asm, __strlen_kernel_asm +#endif + +__BUILD_STRLEN_ASM kernel + +#ifdef CONFIG_EVA + + .set push + .set eva +__BUILD_STRLEN_ASM user + .set pop +#endif -- cgit 1.2.3-korg