Unverified90% confidenceFactTime unknown
ARM架构的AAPCS规范要求在函数调用边界栈指针必须保持8字节对齐，否则浮点运算、SIMD指令或某些原子操作会触发Usage Fault异常
1
Sources
90%
Confidence
Long-term
Relevance
5/31/2026
First Seen
Sources
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