{"id":98248,"date":"2020-10-28T02:42:23","date_gmt":"2020-10-28T00:42:23","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-standartnoj-si-biblioteki-picolibc-1-4-7"},"modified":"2020-11-18T00:58:42","modified_gmt":"2020-11-17T22:58:42","slug":"vypusk-standartnoj-si-biblioteki-picolibc-1-4-7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/vypusk-standartnoj-si-biblioteki-picolibc-1-4-7","title":{"rendered":"Lanzamiento de la biblioteca est\u00e1ndar C PicoLibc 1.4.7","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Keith Packard, desarrollador activo de Debian, l\u00edder del proyecto X.Org y creador de numerosas extensiones X, incluyendo XRender, XComposite y XRandR, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/picolibc\/picolibc\/releases\">public\u00f3<\/a><\/noindex> lanzamiento de la biblioteca est\u00e1ndar de C <noindex><a rel=\"nofollow\" href=\"https:\/\/keithp.com\/picolibc\/\">PicoLibc 1.4.7<\/a><\/noindex>, desarrollada para ser utilizada en dispositivos embebidos con tama\u00f1o de almacenamiento permanente y memoria RAM limitados. Al desarrollar, parte del c\u00f3digo se tom\u00f3 de la biblioteca <noindex><a rel=\"nofollow\" href=\"http:\/\/sourceware.org\/newlib\/\">newlib<\/a><\/noindex> del proyecto Cygwin y <noindex><a rel=\"nofollow\" href=\"https:\/\/www.nongnu.org\/avr-libc\/\">AVR Libc<\/a><\/noindex>, desarrollada para microcontroladores de Atmel AVR. El c\u00f3digo de PicoLibc <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/keith-packard\/picolibc\">se distribuye<\/a><\/noindex> se publica bajo la licencia BSD. Se soporta la construcci\u00f3n de la biblioteca para arquitecturas ARM (32-bit), i386, RISC-V, x86_64 y PowerPC.<\/p>\n<p>Inicialmente, el proyecto se desarroll\u00f3 bajo el nombre 'newlib-nano' y ten\u00eda como objetivo reformular algunas funciones que consumen muchos recursos de Newlib, las cuales resultaban problem\u00e1ticas para utilizar en dispositivos embebidos con poca RAM. Por ejemplo, las funciones stdio fueron reemplazadas por una versi\u00f3n compacta de la biblioteca avrlibc. El c\u00f3digo tambi\u00e9n fue depurado de los componentes que no se utilizaban en la compilaci\u00f3n para dispositivos embebidos y que no estaban bajo licencia BSD. Se a\u00f1adi\u00f3 una versi\u00f3n simplificada del c\u00f3digo de inicializaci\u00f3n (crt0), y la implementaci\u00f3n de flujos locales se traslad\u00f3 de 'struct _reent' a un mecanismo TLS.<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Thread-local_storage\">almacenamiento local de hilos<\/a><\/noindex>). Se utiliz\u00f3 la herramienta Meson para la compilaci\u00f3n. <\/p>\n<p>En esta nueva versi\u00f3n:<\/p>\n<ul>\n<li class=\"l\"> Se a\u00f1adi\u00f3 la capacidad de compilaci\u00f3n utilizando <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50470\">un compilador<\/a><\/noindex> matem\u00e1ticamente verificado <noindex><a rel=\"nofollow\" href=\"http:\/\/compcert.inria.fr\/compcert-C.html\">CompCert<\/a><\/noindex>.\n<li class=\"l\"> Se a\u00f1adi\u00f3 soporte para el compilador Clang.\n<li class=\"l\"> El comportamiento de la funci\u00f3n 'gamma' se ha alineado con el comportamiento de Glibc.\n<li class=\"l\"> En la implementaci\u00f3n de nano-malloc se garantiza la limpieza obligatoria de la memoria devuelta.\n<li class=\"l\"> Se mejor\u00f3 el rendimiento de nano-realloc, especialmente al realizar operaciones de fusi\u00f3n de bloques libres y ampliaci\u00f3n del tama\u00f1o del mont\u00f3n.\n<li class=\"l\"> Se a\u00f1adi\u00f3 un conjunto de pruebas para comprobar la correcci\u00f3n del funcionamiento de malloc.\n<li class=\"l\"> Se mejor\u00f3 el soporte para la plataforma Windows y se a\u00f1adi\u00f3 la capacidad de compilaci\u00f3n utilizando la herramienta mingw.\n<li class=\"l\"> En los sistemas ARM se utiliza el registro de hardware TLS (Thread-Local Storage) si est\u00e1 disponible.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fuente: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53962\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u0438\u0442 \u041f\u0430\u043a\u043a\u0430\u0440\u0434 (Keith Packard), \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a Debian, \u043b\u0438\u0434\u0435\u0440 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 X.Org \u0438 \u0441\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u044c \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430 X-\u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0439, \u0432\u043a\u043b\u044e\u0447\u0430\u044f XRender, XComposite \u0438 XRandR, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0432\u044b\u043f\u0443\u0441\u043a \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0439 \u0421\u0438-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 PicoLibc 1.4.7, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043d\u0430 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430\u0445 \u0441 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u043c \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430 \u0438 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438. \u041f\u0440\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0447\u0430\u0441\u0442\u044c \u043a\u043e\u0434\u0430 \u0437\u0430\u0438\u043c\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0430 \u0438\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 newlib \u043e\u0442 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0421ygwin \u0438 AVR Libc, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0432\u0448\u0435\u0439\u0441\u044f \u0434\u043b\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-98248","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u0438\u0442 \u041f\u0430\u043a\u043a\u0430\u0440\u0434 (Keith Packard), \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a Debian, \u043b\u0438\u0434\u0435\u0440 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 X.Org \u0438 \u0441\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u044c \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430 X-\u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0439, 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