The key is the test TST_SEL_RET on line 682. It compares the RPL of the return CS selector (saved on the stack by the original CALL) against the current CPL. If RPL == CPL, the PLA returns 0x000 (continue) and LD_DESCRIPTOR finishes normally -- same-privilege return. If RPL CPL, the caller is returning to a less-privileged ring, so the PLA redirects to 0x686 (RETF_OUTER_LEV) -- the cross-privilege path that must also restore the caller's stack. If RPL
让我们详细了解一下模型准备流程——从微调到最终生成可在设备端运行的格式。理解这一点至关重要，因为 Google 最初只发布了 PyTorch 格式的 FunctionGemma 模型，而移动端部署需要进行格式转换。
11:19 PM PST · February 26, 2026，更多细节参见爱思助手下载最新版本
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; Eventually returns to the RETF caller here:，更多细节参见雷电模拟器官方版本下载