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authorSteven J. Hill <Steven.Hill@imgtec.com>2013-03-25 13:41:47 -0500
committerRalf Baechle <ralf@linux-mips.org>2013-05-09 17:55:19 +0200
commitb1bac3734581ab6788bbfe125c62914f8d6d5e01 (patch)
treecf1592a5bc6185e5af63d9729d6afb2ef30bd50a
parent0131f2b2c93bc8f0b0d9d599cf72d1df76ad3f01 (diff)
downloadop-kernel-dev-b1bac3734581ab6788bbfe125c62914f8d6d5e01.zip
op-kernel-dev-b1bac3734581ab6788bbfe125c62914f8d6d5e01.tar.gz
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 <Steven.Hill@imgtec.com>
-rw-r--r--arch/mips/lib/strlen_user.S9
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/mips/lib/strlen_user.S b/arch/mips/lib/strlen_user.S
index fdbb970..e362dcd 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 <asm/asm.h>
#include <asm/asm-offsets.h>
@@ -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)
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