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MIPS: Don't try to decode microMIPS branch instructions where they cannot exist.

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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>
This commit is contained in:
David Daney 2013-05-24 20:54:09 +00:00 committed by Ralf Baechle
parent 74338805ec
commit fe6d29095d
1 changed files with 3 additions and 0 deletions
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3
arch/mips/math-emu/cp1emu.c
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@ -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) ==