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Commit 86bdb277 authored by Markos Chandras's avatar Markos Chandras Committed by Ralf Baechle
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MIPS: kernel: scall32-o32: Use EVA wrappers to fetch syscall arguments 



Arguments 4-8 are stored on user's stack, so use the EVA instructions
to fetch them if EVA is enabled.

Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
parent aa1af47f

arch/mips/kernel/scall32-o32.S

+5 −4
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 
 * Copyright (C) 1995-99, 2000- 02, 06 Ralf Baechle <ralf@linux-mips.org>

 * Copyright (C) 2001 MIPS Technologies, Inc.

 * Copyright (C) 2004 Thiemo Seufer

 * Copyright (C) 2014 Imagination Technologies Ltd.

 */

#include <linux/errno.h>

#include <asm/asm.h>
@@ -74,10 +75,10 @@ NESTED(handle_sys, PT_SIZE, sp) 
	.set    noreorder

	.set	nomacro



1:	lw	t5, 16(t0)		# argument #5 from usp

4:	lw	t6, 20(t0)		# argument #6 from usp

3:	lw	t7, 24(t0)		# argument #7 from usp

2:	lw	t8, 28(t0)		# argument #8 from usp

1:	user_lw(t5, 16(t0))		# argument #5 from usp

4:	user_lw(t6, 20(t0))		# argument #6 from usp

3:	user_lw(t7, 24(t0))		# argument #7 from usp

2:	user_lw(t8, 28(t0))		# argument #8 from usp



	sw	t5, 16(sp)		# argument #5 to ksp

	sw	t6, 20(sp)		# argument #6 to ksp