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| author | David Daney <david.daney@cavium.com> | 2013-05-24 20:54:09 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-07-01 15:10:57 +0200 |
| commit | fe6d29095d4370bed3a525404c45bbd6aa7c191b (patch) | |
| tree | 1e62d46be2642ce38dc3d59f49d19403c923e9f9 /arch/mips/math-emu | |
| parent | 74338805ec6869594d583535f941cb478c94dd73 (diff) | |
| download | blackbird-obmc-linux-fe6d29095d4370bed3a525404c45bbd6aa7c191b.tar.gz blackbird-obmc-linux-fe6d29095d4370bed3a525404c45bbd6aa7c191b.zip | |
MIPS: Don't try to decode microMIPS branch instructions where they cannot exist.
In mm_isBranchInstr() we can short circuit the entire function if
!cpu_has_mmips.
Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5326/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu')
| -rw-r--r-- | arch/mips/math-emu/cp1emu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index f03771900813..e773659ccf9f 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -471,6 +471,9 @@ int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, unsigned int fcr31; unsigned int bit; + if (!cpu_has_mmips) + return 0; + switch (insn.mm_i_format.opcode) { case mm_pool32a_op: if ((insn.mm_i_format.simmediate & MM_POOL32A_MINOR_MASK) == |
