while (stack.length && stack.at(-1) <= cur) {
JIO_OK ("jump if I/O OK") tests whether CPL ≤ IOPL. The same check gates PUSHF, POPF, INT n, and IRET. The monitor then emulates each instruction as appropriate: maintaining a virtual interrupt flag per V86 task, reflecting software interrupts through the real-mode interrupt vector table, virtualizing I/O accesses, and so on.
。关于这个话题，爱思助手下载最新版本提供了深入分析
Second: Ambushing HTMLMediaElement.prototype.play。旺商聊官方下载对此有专业解读
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