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<think>
Okay, I need to classify this bug report as either 'user-mode' or 'system-mode'. The issue is that QEMU's i386 and x86_64 emulators are hanging when running a test program. The problem seems to be in the floatx80_sqrt function, which suggests it's related to floating-point operations.
I remember that user-mode emulation deals with executing guest programs without full OS virtualization. Since the bug is about QEMU hanging while executing a compiled test program (which uses math functions), it likely occurs when running user-space applications under QEMU's user mode.
On the other hand, system-mode would involve emulating the entire system, including hardware and device drivers. This issue doesn't mention peripherals or higher privileges, just a problem in the softfloat library used for floating-point operations in user processes.
So, it seems like this is a user-mode related bug because it's about running a program that causes QEMU to hang during execution without involving system-level components.
</think>
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