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| author | Steven J. Hill <Steven.Hill@imgtec.com> | 2013-03-25 12:15:55 -0500 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-05-09 17:55:18 +0200 |
| commit | 2a0b24f56c2492b932f1aed617ae80fb23500d21 (patch) | |
| tree | c9aec2872f912c65b83a92a66fe94f6006427d73 /arch/mips/kernel/scall32-o32.S | |
| parent | 102cedc32a6e3cd537374a3678d407591d5a6fab (diff) | |
| download | blackbird-op-linux-2a0b24f56c2492b932f1aed617ae80fb23500d21.tar.gz blackbird-op-linux-2a0b24f56c2492b932f1aed617ae80fb23500d21.zip | |
MIPS: microMIPS: Add support for exception handling.
All exceptions must be taken in microMIPS mode, never in classic
MIPS mode or the kernel falls apart. A few NOP instructions are
used to maintain the correct alignment of microMIPS versions of
the exception vectors.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Diffstat (limited to 'arch/mips/kernel/scall32-o32.S')
| -rw-r--r-- | arch/mips/kernel/scall32-o32.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 9ea29649fc28..9b36424b03c5 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -138,9 +138,18 @@ stackargs: 5: jr t1 sw t5, 16(sp) # argument #5 to ksp +#ifdef CONFIG_CPU_MICROMIPS sw t8, 28(sp) # argument #8 to ksp + nop sw t7, 24(sp) # argument #7 to ksp + nop sw t6, 20(sp) # argument #6 to ksp + nop +#else + sw t8, 28(sp) # argument #8 to ksp + sw t7, 24(sp) # argument #7 to ksp + sw t6, 20(sp) # argument #6 to ksp +#endif 6: j stack_done # go back nop .set pop |
