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target/xtensa: enable all coprocessors for linux-user

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Linux userspace always sees coprocessors as enabled. CPENABLE register
and coprocessor exceptions are used internally by the kernel to manage
lazy coprocessor context switch. None of it is needed for linux-user.
Always enable all coprocessors for user emulation.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200829104758.22337-1-jcmvbkbc@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Max Filippov 2020-08-29 03:47:58 -07:00 • committed by Laurent Vivier
parent e554eb4bb5
commit ab97f0505b
1 changed files with 1 additions and 0 deletions
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1
target/xtensa/cpu.c
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@ -93,6 +93,7 @@ static void xtensa_cpu_reset(DeviceState *dev)
!xtensa_abi_call0()) {
env->sregs[PS] |= PS_WOE;
}
env->sregs[CPENABLE] = 0xff;
#endif
env->sregs[VECBASE] = env->config->vecbase;
env->sregs[IBREAKENABLE] = 0;