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linux-user: Reset copied CPUs in cpu_copy() always

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When a new thread gets created, we need to reset non arch specific state to
get the new CPU into clean state.

However this reset should happen before the arch specific CPU contents get
copied over. Otherwise we end up having clean reset state in our newly created
thread.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Alexander Graf 2013-07-06 14:17:51 +02:00 committed by Riku Voipio
parent ddaa7e5a2a
commit b24c882b94
2 changed files with 4 additions and 3 deletions
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4
exec.c
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@ -642,6 +642,10 @@ CPUArchState *cpu_copy(CPUArchState *env)
CPUWatchpoint *wp;
#endif
/* Reset non arch specific state */
cpu_reset(ENV_GET_CPU(new_env));
/* Copy arch specific state into the new CPU */
memcpy(new_env, env, sizeof(CPUArchState));
/* Clone all break/watchpoints.

3
linux-user/syscall.c
View file

@ -4293,9 +4293,6 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
init_task_state(ts);
/* we create a new CPU instance. */
new_env = cpu_copy(env);
#if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
cpu_reset(ENV_GET_CPU(new_env));
#endif
/* Init regs that differ from the parent. */
cpu_clone_regs(new_env, newsp);
new_env->opaque = ts;