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
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
。关于这个话题，WPS下载最新地址提供了深入分析
“이스라엘 꾐에 빠져 이란 때렸나”…대리전 의혹에 美여론 들썩
设立5年过渡期，成为中国特色减贫道路的又一创举。