{"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\/it\/blog\/news\/vypusk-standartnoj-si-biblioteki-picolibc-1-4-7","title":{"rendered":"Rilascio della standard C library PicoLibc 1.4.7","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Keith Packard, sviluppatore attivo di Debian, leader del progetto X.Org e creatore di numerosi X-extension, tra cui XRender, XComposite e XRandR, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/picolibc\/picolibc\/releases\">ha pubblicato<\/a><\/noindex> rilascio della standard C library <noindex><a rel=\"nofollow\" href=\"https:\/\/keithp.com\/picolibc\/\">PicoLibc 1.4.7<\/a><\/noindex>, sviluppata per applicazioni su dispositivi embedded con spazio di memoria permanente e RAM limitati. Durante lo sviluppo, parte del codice \u00e8 stata presa dalla libreria <noindex><a rel=\"nofollow\" href=\"http:\/\/sourceware.org\/newlib\/\">newlib<\/a><\/noindex> dal progetto Cygwin e <noindex><a rel=\"nofollow\" href=\"https:\/\/www.nongnu.org\/avr-libc\/\">AVR Libc<\/a><\/noindex>, sviluppata per microcontrollori Atmel AVR. Il codice di PicoLibc <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/keith-packard\/picolibc\">\u00e8 distribuito<\/a><\/noindex> \u00e8 sotto licenza BSD. \u00c8 supportata la compilazione della libreria per architetture ARM (32-bit), i386, RISC-V, x86_64 e PowerPC.<\/p>\n<p>Inizialmente, il progetto si sviluppava con il nome 'newlib-nano' ed era mirato a rielaborare alcune funzioni di Newlib ad alta intensit\u00e0 di risorse, che risultavano problematiche da utilizzare su dispositivi embedding con poca RAM. Ad esempio, le funzioni stdio sono state sostituite con una versione compatta dalla libreria avrlibc. Il codice \u00e8 stato anche ripulito da componenti non utilizzati nella build per dispositivi embedded, forniti sotto licenza diversa dalla BSD. \u00c8 stata aggiunta una versione semplificata del codice di inizializzazione (crt0) e l'implementazione dei thread locali \u00e8 stata trasferita da 'struct _reent' a un meccanismo TLS.<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Thread-local_storage\">thread-local storage<\/a><\/noindex>). Per la compilazione \u00e8 stato utilizzato il toolchain Meson. <\/p>\n<p>Nel nuovo rilascio:<\/p>\n<ul>\n<li class=\"l\"> \u00c8 stata aggiunta la possibilit\u00e0 di compilazione utilizzando <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50470\">un compilatore<\/a><\/noindex> CompCert <noindex><a rel=\"nofollow\" href=\"http:\/\/compcert.inria.fr\/compcert-C.html\">Aggiunta la compatibilit\u00e0 con il compilatore Clang.<\/a><\/noindex>.\n<li class=\"l\"> Il comportamento della funzione 'gamma' \u00e8 stato allineato con il comportamento della Glibc.\n<li class=\"l\"> Il comportamento della funzione 'gamma' \u00e8 stato allineato al comportamento di Glibc.\n<li class=\"l\"> Le prestazioni di nano-realloc sono state migliorate, specialmente durante le operazioni di fusione dei blocchi liberi e l'espansione delle dimensioni della heap.\n<li class=\"l\"> \u00c8 stato aggiunto un set di test per verificare la correttezza del funzionamento di malloc.\n<li class=\"l\"> Migliorata la compatibilit\u00e0 con la piattaforma Windows e aggiunta la possibilit\u00e0 di compilazione utilizzando il toolchain mingw.\n<li class=\"l\"> Nei sistemi ARM \u00e8 stato utilizzato il registro hardware TLS (Thread-Local Storage) se disponibile.\n<li class=\"l\"> \ud83e\udd47Rilascio della standard C library PicoLibc 1.4.7 | ProHoster\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <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 5.0.1.1 - 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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