blob: da9b91778c20a4a233cf285604e694d7dabacdb2 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
|
<think>
Alright, I'm looking at this bug report from Muhui about QEMU crashing when executing the WFI instruction. Let me break it down step by step.
First, the user provided the bytecode 0xe320f003 for the WFI instruction. They mentioned that after executing this instruction, QEMU exits with an unhandled CPU exception. The crash log shows various register values and a PSR (Program Status Register) indicating the CPU was in user mode when it happened.
WFI stands for Wait For Interrupt and is commonly used to put the processor into a low-power state until an interrupt occurs. The fact that QEMU is crashing suggests there's an issue with how this instruction is being handled by the emulator.
Now, considering the possible categories: instruction, syscall, or runtime. Since the problem arises directly from executing a specific instruction (WFI), it seems to be related to how that instruction is processed. It's not about a system call error because WFI doesn't involve syscalls; it's a CPU-level operation. It also doesn't seem like a general runtime issue because the crash occurs specifically when this instruction runs.
So, I'm leaning towards the "instruction" category because the bug report revolves around the handling of the WFI instruction within QEMU.
</think>
The bug is related to how QEMU handles the WFI instruction, which is an ARM instruction. The crash occurs during execution of this specific instruction, indicating a problem with instruction processing.
**Answer:** instruction
|