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Commit fe6d2909 authored by David Daney's avatar David Daney Committed by Ralf Baechle
Browse files

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: default avatarDavid Daney <david.daney@cavium.com>
Acked-by: default avatarSteven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5326/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 74338805

arch/mips/math-emu/cp1emu.c

+3 −0
Original line number Diff line number Diff line
@@ -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) ==