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change while to if

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The while loop will be executed exactly 0 or 1 times, depending on
env->exit_request.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2010-01-15 09:42:09 +01:00 committed by Anthony Liguori
parent 34dec6a560
commit 6113d6d316
1 changed files with 3 additions and 7 deletions
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10
cpu-exec.c
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@ -596,17 +596,13 @@ int cpu_exec(CPUState *env1)
tb_add_jump((TranslationBlock *)(next_tb & ~3), next_tb & 3, tb);
}
spin_unlock(&tb_lock);
env->current_tb = tb;
assert (env->current_tb);
/* cpu_interrupt might be called while translating the
TB, but before it is linked into a potentially
infinite loop and becomes env->current_tb. Avoid
starting execution if there is a pending interrupt. */
if (unlikely (env->exit_request))
env->current_tb = NULL;
while (env->current_tb) {
if (!unlikely (env->exit_request)) {
env->current_tb = tb;
tc_ptr = tb->tc_ptr;
/* execute the generated code */
#if defined(__sparc__) && !defined(CONFIG_SOLARIS)
@ -643,8 +639,8 @@ int cpu_exec(CPUState *env1)
cpu_loop_exit();
}
}
assert (env->current_tb == NULL);
}
assert (env->current_tb == NULL);
/* reset soft MMU for next block (it can currently
only be set by a memory fault) */
} /* for(;;) */