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MIPS: BPF: Avoid unreachable code on little endian

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On little endian, avoid generating the big endian version of the code
by using #else in addition to #ifdef #endif. Also fix one alignment
issue wrt delay slot.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: stable@vger.kernel.org # v4.2+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11097/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Aurelien Jarno 2015-09-05 18:46:56 +02:00 committed by Ralf Baechle
parent 88d3426942
commit faa9724a67
1 changed files with 5 additions and 3 deletions
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8
arch/mips/net/bpf_jit_asm.S
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@ -151,9 +151,10 @@ NESTED(bpf_slow_path_word, (6 * SZREG), $r_sp)
wsbh t0, $r_s0
jr $r_ra
rotr $r_A, t0, 16
#endif
#else
jr $r_ra
move $r_A, $r_s0
move $r_A, $r_s0
#endif
END(bpf_slow_path_word)
@ -162,9 +163,10 @@ NESTED(bpf_slow_path_half, (6 * SZREG), $r_sp)
#ifdef CONFIG_CPU_LITTLE_ENDIAN
jr $r_ra
wsbh $r_A, $r_s0
#endif
#else
jr $r_ra
move $r_A, $r_s0
#endif
END(bpf_slow_path_half)