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| author |   Markos Chandras <markos.chandras@imgtec.com> | 2013-12-04 14:35:28 +0000 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:13 +0100 |
| commit | 86bdb2779d67773edcfddfca4d6a4ae055e21964 (patch) | |
| tree | 7144188bddd1c1aed9376dac5382b15d373ba721 /arch/mips/kernel/scall32-o32.S | |
| parent | MIPS: uapi: inst: Add instruction format for SPECIAL3 instructions (diff) | |
| download | linux-dev-86bdb2779d67773edcfddfca4d6a4ae055e21964.tar.xz linux-dev-86bdb2779d67773edcfddfca4d6a4ae055e21964.zip | |
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>
Diffstat (limited to 'arch/mips/kernel/scall32-o32.S')
| -rw-r--r-- | arch/mips/kernel/scall32-o32.S | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index ffe89139e0f9..fdc70b400442 100644 --- 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 |