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[Qemu-devel] regs_to_env() ?


From: Jun Koi
Subject: [Qemu-devel] regs_to_env() ?
Date: Thu, 22 Jul 2010 11:06:20 +0900

Hi,

Function regs_to_env() in target-i386/exec.h has a code like below:

...
#ifdef reg_EAX
env->regs[R_EAX] = EAX
#endif
...

However, elsewhere we have EAX defined as:

#define EAX (env->regs[R_EAX])

This means effectively, we have code like:

env->regs[R_EAX] = env->regs[R_EAX];

What is the meaning of this code? That looks pointless to me, but I
guess I must be wrong here...

Thanks,
Jun



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