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: Markos Chandras <markos.chandras@imgtec.com>

diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index ffe89139e0f92ef10d80d74985ace86476594610..fdc70b40044265fb2107df186eb0e593a96b9571 100644 (file)
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -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