From: Steven J. Hill Date: Mon, 25 Mar 2013 18:41:47 +0000 (-0500) Subject: MIPS: microMIPS: Optimise 'strlen' core library function. X-Git-Tag: Ubuntu-5.4-5.4.0-11.14~16650^2^2~9 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=b1bac3734581ab6788bbfe125c62914f8d6d5e01;p=mirror_ubuntu-focal-kernel.git MIPS: microMIPS: Optimise 'strlen' core library function. Optimise 'strlen' to use microMIPS instructions and/or optimisations for binary size reduction. When the microMIPS ISA is not being used, the library function compiles to the original binary code. Signed-off-by: Steven J. Hill --- diff --git a/arch/mips/lib/strlen_user.S b/arch/mips/lib/strlen_user.S index fdbb970f670d..e362dcdc69d1 100644 --- a/arch/mips/lib/strlen_user.S +++ b/arch/mips/lib/strlen_user.S @@ -3,8 +3,9 @@ * 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) 1996, 1998, 1999, 2004 by Ralf Baechle + * Copyright (C) 1999 Silicon Graphics, Inc. + * Copyright (C) 2011 MIPS Technologies, Inc. */ #include #include @@ -28,9 +29,9 @@ LEAF(__strlen_user_asm) FEXPORT(__strlen_user_nocheck_asm) move v0, a0 -1: EX(lb, t0, (v0), .Lfault) +1: EX(lbu, v1, (v0), .Lfault) PTR_ADDIU v0, 1 - bnez t0, 1b + bnez v1, 1b PTR_SUBU v0, a0 jr ra END(__strlen_user_asm)