> Subject: [PATCH v2 22/33] target/mips: Adjust behavior of Config3's ISAOnExc
> bit for nanoMIPS
>
> From: Yongbok Kim <yongbok....@mips.com>
>
> Config3.ISAOnExc is read only in nanoMIPS.
>
> Signed-off-by: Yongbok Kim <yongbok....@mips.com>
> Signed-off-by: Aleksandar Markovic <amarko...@wavecomp.com>
> Signed-off-by: Stefan Markovic <smarko...@wavecomp.com>
> ---
> target/mips/op_helper.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
Reviewed-by: Aleksandar Markovic <amarko...@wavecomp.com>
> diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c
> index cb83b6d..5e10286 100644
> --- a/target/mips/op_helper.c
> +++ b/target/mips/op_helper.c
> @@ -1730,7 +1730,8 @@ void helper_mtc0_config2(CPUMIPSState *env,
> target_ulong arg1)
>
> void helper_mtc0_config3(CPUMIPSState *env, target_ulong arg1)
> {
> - if (env->insn_flags & ASE_MICROMIPS) {
> + if ((env->insn_flags & ASE_MICROMIPS) &&
> + !(env->insn_flags & ISA_NANOMIPS32)) {
> env->CP0_Config3 = (env->CP0_Config3 & ~(1 << CP0C3_ISA_ON_EXC)) |
> (arg1 & (1 << CP0C3_ISA_ON_EXC));
> }
> --
> 2.7.4
>
