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The full name of JOP is Jump-oriented programming, and attacks are similar to ROP attacks. It also exploits existing code snippets in binary executables for attacks. ROP uses ret instructions to change the control flow of the program, while JOP attacks use indirect jump and indirect call instructions (indirect call instructions) to change the control flow of the program. When a program executes an indirect jump or an indirect call, The program will obtain the destination addresses of its jumps from the specified registers. Because these jump destination addresses are stored in the registers and the attacker can modify the contents of the registers by modifying the contents of the stack, this allows the destination addresses of indirect jumps and indirect calls in the program to be attacked by the attacker.兰顿和优莱卡的旅程将在哪里结束？As for myself, it was brushed by the Beggars' Sect together with the hidden sword after graduation from Chi Ming this season. It was a little brain pain without long-range brushing, but it also passed.1931年，日军入侵山海关，华北形势告急，故宫博物院决定将馆藏精品转移，以避战火浩劫。文物由北京经上海、南京辗转运抵位于大后方的四川和贵州，最后保存在乐山、峨嵋、安顺等偏远地区。至抗战结束后，陆续运回南京，之后部分被运送到台湾，部分回归北平本院，部分留在南京。 文物南迁工作历时十五年，近二万箱、近百万件文物，行程数万公里，曾经在徐州、郑州遭到日军飞机的轰炸、在峨嵋经受了大火的考验，但都能化险为夷，文物没有丢失损毁，这是中国文物保护史乃至文化史上的奇迹，也是中华文明史上的奇迹。南迁之路是一条充满艰险的道路，无数的人力物力，无比崇高的责任心，无与伦比的勇气，铺平了这条道路，其中的艰辛困苦和危急是难以想象的……The first scheme is to use the general coding method to realize the preloading technology of the picture. First, create the imgNode element, Then when the method myImage.setSrc is called, a preloaded picture is given to the picture first, and when the picture is loaded, the img element is assigned a value. The second scheme is implemented by using proxy mode. MyImage function is only responsible for creating img elements, proxy function ProxyImage is responsible for setting loading pictures for the picture, and when the picture is really loaded, myImage.setSrc method in myImage is called to set the path of the picture. The advantages and disadvantages between them are as follows:若是未见我家人，庞将军一定冷静。