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This chapter introduces exception and interrupt handling mechanisms in LoongArch. It covers precise exceptions, control status registers (CSRs), and hardware-software coprocessing. The chapter details implementing exception detection logic, CSR read/write operations, and conflict resolution in pipelined CPUs. Practical tasks include adding system call support and debugging exception-related errors.

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Support Exception and Interrupt

  • 章节

  • 发表日期：

    2025年

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  • Wenxiang Wang,
  • Jinzhang Xing

摘要

This chapter introduces exception and interrupt handling mechanisms in LoongArch. It covers precise exceptions, control status registers (CSRs), and hardware-software coprocessing. The chapter details implementing exception detection logic, CSR read/write operations, and conflict resolution in pipelined CPUs. Practical tasks include adding system call support and debugging exception-related errors.