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
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In June 1962, after gruelling medical tests, Nasa announced its "New Nine". These would be the men to deliver on President Kennedy's pledge to put American boots on the Moon.
运营四年之后，这条船又要原价转出了。
在宜昌的风景区，常常可以见到蜡梅的身影，与名胜古迹相映生辉。当阳市长坂坡遗址公园“长坂雄风”碑东西两侧，6株蜡梅树黄花满枝，香气清远，引得游人排队拍照打卡。这座石碑始建于明代万历年间，几经损坏、盗窃。抗日战争胜利后石碑重刻，公园管理人员又在旁栽种蜡梅，成为市民游客追古抚今的旅游景点。