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Commit 5cc49497 authored by Markos Chandras's avatar Markos Chandras Committed by Ralf Baechle
Browse files

MIPS: lib: strlen_user: Use macro to build the strlen_user symbol 



Build the __strlen_user symbol using a macro. In EVA mode we will
need to use similar code to do the userspace load operations so
it is better if we use a macro to avoid code duplications.

Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
parent 4968db4b

arch/mips/lib/strlen_user.S

+10 −6
Original line number Diff line number Diff line
@@ -22,19 +22,23 @@ 
 *

 * Return 0 for error

 */

LEAF(__strlen_user_asm)

	.macro __BUILD_STRLEN_ASM func

LEAF(__strlen_\func\()_asm)

	LONG_L		v0, TI_ADDR_LIMIT($28)	# pointer ok?

	and		v0, a0

	bnez		v0, .Lfault

	bnez		v0, .Lfault\@



FEXPORT(__strlen_user_nocheck_asm)

FEXPORT(__strlen_\func\()_nocheck_asm)

	move		v0, a0

1:	EX(lbu, v1, (v0), .Lfault)

1:	EX(lbu, v1, (v0), .Lfault\@)

	PTR_ADDIU	v0, 1

	bnez		v1, 1b

	PTR_SUBU	v0, a0

	jr		ra

	END(__strlen_user_asm)

	END(__strlen_\func\()_asm)



.Lfault:	move		v0, zero

.Lfault\@:	move		v0, zero

	jr		ra

	.endm



__BUILD_STRLEN_ASM user