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从__builtin_ia32_lzcnt_u16到lzcntw指令
内联函数的原始定义 gcc\config\i386\i386-builtin.def /* LZCNT */ BDESC (OPTION_MASK_ISA_LZCNT, CODE_FOR_lzcnt_hi, "__builtin_ia32_lzcnt_u16", IX86_BUILTIN_LZCNT16, UNKNOWN, (int) UINT16_FTYPE_UINT16) /* Same as above, for backward compatibility. */ BD内存管理——分页机制的启用
32位分页模式：CR0.PE=1, CR0.PG=1, CR4.PAE=0 PAE分页模式：CR0.PE=1, CR0.PG=1, CR4.PAE=1, IA32_EFER.LME=0 4级分页模式：CR0.PE=1, CR0.PG=1, CR4.PAE=1, IA32_EFER.LME=1, CR4.LA57=0 5级分页模式：CR0.PE=1, CR0.PG=1, CR4.PAE=1, IA32_EFER.LME=1, CR4.LA57=1 其他web浏览器程序打包成客户端可安装程序
这边主要是有一个客户，需要在电视机上安装一个客户端，含有视频直播功能；刚开始我们采用的webapp打包成apk安装在电视机上，发现摄像头监控画面根本无法播放(apk在手机上可以正常播放视频)；排除一些原因之后，初步判断是电视机的内置浏览器内核是阉割版，不支持视频的播放，必须切换内核才行，IA32 x86
The Intel processor line, colloquially referred to as x86, has followed a long, evolutionary development. It started with one of the first single-chip, 16-bit microprocessors, where many compromises had to be made due to the limited capabilities of integ