From 4968db4b9c4528b097ab4e549c4e0d0420dd1efc Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Mon, 9 Dec 2013 15:28:10 +0000 Subject: MIPS: lib: strnlen_user: Add EVA support In non-EVA mode, a strlen_user* alias is used for the strlen_kernel* symbols since the code is identical. In EVA mode, a new strlen_user* symbol is used which uses the EVA specific instructions to load values from userspace. Signed-off-by: Markos Chandras --- arch/mips/lib/strnlen_user.S | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'arch/mips/lib') diff --git a/arch/mips/lib/strnlen_user.S b/arch/mips/lib/strnlen_user.S index 44221602ce1c..f3af6995e2a6 100644 --- a/arch/mips/lib/strnlen_user.S +++ b/arch/mips/lib/strnlen_user.S @@ -35,7 +35,11 @@ FEXPORT(__strnlen_\func\()_nocheck_asm) move v0, a0 PTR_ADDU a1, a0 # stop pointer 1: beq v0, a1, 1f # limit reached? +.ifeqs "\func", "kernel" EX(lb, t0, (v0), .Lfault\@) +.else + EX(lbe, t0, (v0), .Lfault\@) +.endif PTR_ADDIU v0, 1 bnez t0, 1b 1: PTR_SUBU v0, a0 @@ -47,4 +51,20 @@ FEXPORT(__strnlen_\func\()_nocheck_asm) jr ra .endm +#ifndef CONFIG_EVA + /* Set aliases */ + .global __strnlen_user_asm + .global __strnlen_user_nocheck_asm + .set __strnlen_user_asm, __strnlen_kernel_asm + .set __strnlen_user_nocheck_asm, __strnlen_kernel_nocheck_asm +#endif + +__BUILD_STRNLEN_ASM kernel + +#ifdef CONFIG_EVA + + .set push + .set eva __BUILD_STRNLEN_ASM user + .set pop +#endif -- cgit 1.4.1