{"id":37963,"date":"2019-10-31T22:20:52","date_gmt":"2019-10-31T19:20:52","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-sostav-gcc-prinyat-bekend-dlya-kompilyatsii-v-ebpf\/"},"modified":"2019-10-31T22:20:52","modified_gmt":"2019-10-31T19:20:52","slug":"v-sostav-gcc-prinyat-bekend-dlya-kompilyatsii-v-ebpf","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/v-sostav-gcc-prinyat-bekend-dlya-kompilyatsii-v-ebpf","title":{"rendered":"Se ha aceptado un backend para compilar en eBPF en GCC","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

El conjunto de compiladores GCC se acept\u00f3<\/a><\/noindex> c\u00f3digo para compilar programas para el int\u00e9rprete de bytecode integrado en el n\u00facleo de Linux eBPF<\/a><\/noindex>. Gracias al uso de la compilaci\u00f3n JIT, el bytecode en el n\u00facleo se traduce en instrucciones de m\u00e1quina en tiempo real y se ejecuta con el rendimiento del c\u00f3digo nativo. Parcheo con soporte para eBPF se han aceptado<\/a><\/noindex> en la rama sobre la cual se desarrolla el lanzamiento de GCC 10.<\/p>\n

Adem\u00e1s del backend para la generaci\u00f3n de bytecode, GCC incluye un puerto de libgcc para eBPF y herramientas para generar archivos ELF, que permiten ejecutar c\u00f3digo en la m\u00e1quina virtual eBPF utilizando los cargadores proporcionados por el n\u00facleo. Los parches que permiten el soporte de eBPF en GCC han sido preparados por ingenieros de Oracle, quienes previamente ya proporcionaron<\/a><\/noindex> soporte para eBPF en GNU binutils. Tambi\u00e9n se est\u00e1 desarrollando un simulador y parches para GDB, que permitir\u00e1n depurar programas eBPF sin cargar en el n\u00facleo.<\/p>\n

Los programas para eBPF pueden definirse en un subconjunto del lenguaje C, compilarse y cargarse en el n\u00facleo. Antes de la ejecuci\u00f3n, el int\u00e9rprete eBPF verifica el bytecode para asegurarse de que se utilicen instrucciones permitidas y establece ciertas reglas sobre el c\u00f3digo (por ejemplo, la ausencia de bucles).
\nInicialmente, para compilar eBPF en Linux, se utilizaba una herramienta basada en LLVM. El soporte para eBPF en GCC es interesante porque permite utilizar un solo conjunto de herramientas para compilar el n\u00facleo de Linux y los programas eBPF, sin necesidad de instalar dependencias adicionales. <\/p>\n

En forma de programas, eBPF se pueden crear controladores de operaciones de red, filtrar tr\u00e1fico, gestionar el ancho de banda, rastrear el funcionamiento de sistemas, interceptar llamadas al sistema, controlar el acceso, contar la frecuencia y el tiempo de ejecuci\u00f3n de operaciones, y realizar trazado utilizando kprobes\/uprobes\/tracepoints.<\/p>\n

<\/a><\/noindex><\/p>\n

Fuente: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u043e\u0441\u0442\u0430\u0432 \u043d\u0430\u0431\u043e\u0440\u0430 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u043e\u0432 GCC \u043f\u0440\u0438\u043d\u044f\u0442 \u043a\u043e\u0434 \u0434\u043b\u044f \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u0434\u043b\u044f \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u043e\u0433\u043e \u0432 \u044f\u0434\u0440\u043e Linux \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430 \u0431\u0430\u0439\u0442\u043a\u043e\u0434\u0430 eBPF. \u0411\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044e JIT-\u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u0438, \u0432 \u044f\u0434\u0440\u0435 \u0431\u0430\u0439\u0442\u043a\u043e\u0434 \u043d\u0430 \u043b\u0435\u0442\u0443 \u0442\u0440\u0430\u043d\u0441\u043b\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u0432 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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-37963","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47El backend para la compilaci\u00f3n en eBPF ha sido aceptado en GCC | ProHoster","description":"El conjunto de compiladores GCC incluye c\u00f3digo para compilar programas para el int\u00e9rprete integrado en el n\u00facleo de 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