{"id":113048,"date":"2024-01-22T11:28:11","date_gmt":"2024-01-22T09:28:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-standartnoj-si-biblioteki-picolibc-1-8-6"},"modified":"2024-01-22T11:28:11","modified_gmt":"2024-01-22T09:28:11","slug":"vypusk-standartnoj-si-biblioteki-picolibc-1-8-6","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-standartnoj-si-biblioteki-picolibc-1-8-6","title":{"rendered":"Vyd\u00e1n\u00ed standardn\u00ed C knihovny PicoLibc 1.8.6","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byl vyd\u00e1n release standardn\u00ed C knihovny PicoLibc 1.8.6, kterou vyv\u00edj\u00ed Keith Packard (l\u00eddr projektu X.Org) pro pou\u017eit\u00ed na vestav\u011bn\u00fdch za\u0159\u00edzen\u00edch s omezenou velikost\u00ed trval\u00e9ho \u00falo\u017ei\u0161t\u011b a opera\u010dn\u00ed pam\u011bt\u00ed. P\u0159i v\u00fdvoji byla \u010d\u00e1st k\u00f3du p\u0159evzata z knihovny newlib projektu Cygwin a AVR Libc, kter\u00e1 byla vyv\u00edjena pro mikrokontrol\u00e9ry Atmel AVR. K\u00f3d PicoLibc je \u0161\u00ed\u0159en pod licenc\u00ed BSD. Podporuje se sestaven\u00ed knihovny pro architektury ARM (32-bit), Aarch64, i386, RISC-V, x86_64, m68k a PowerPC.     <\/p>\n<p>P\u016fvodn\u011b projekt vznikl pod n\u00e1zvem &#171;newlib-nano&#187; a jeho c\u00edlem bylo optimalizovat n\u011bkter\u00e9 n\u00e1ro\u010dn\u00e9 funkce Newlib, kter\u00e9 bylo obt\u00ed\u017en\u00e9 pou\u017e\u00edvat na vestav\u011bn\u00fdch za\u0159\u00edzen\u00edch s malou RAM. Nap\u0159\u00edklad byly ve PicoLibc funkce stdio nahrazeny kompaktn\u00ed verz\u00ed z knihovny avrlibc. K\u00f3d byl tak\u00e9 o\u010di\u0161t\u011bn od nepou\u017e\u00edvan\u00fdch komponent dod\u00e1van\u00fdch pod licenc\u00ed BSD pro sestaven\u00ed na vestav\u011bn\u00fdch za\u0159\u00edzen\u00edch. Byla p\u0159id\u00e1na zjednodu\u0161en\u00e1 verze inicializa\u010dn\u00edho k\u00f3du (crt0) a implementace vol\u00e1n\u00ed byla p\u0159evedena z &#8216;struct _reent&#8217; na mechanismus TLS (thread-local storage). Pro sestaven\u00ed byl pou\u017eit n\u00e1stroj Meson.     <\/p>\n<p>V nov\u00e9m vyd\u00e1n\u00ed:  <\/p>\n<ul>\n<li class=\"l\"> Byly p\u0159eneseny zm\u011bny z Newlib 4.4.0, jako podpora typu &#171;long double&#187; na architektur\u00e1ch i386, RISC-V, Aarch64 a x86_64, podpora roz\u0161\u00ed\u0159en\u00ed RISC-V Zfinx\/Zdinx, mo\u017enost pou\u017eit\u00ed masek p\u0159i vkl\u00e1d\u00e1n\u00ed katalog\u016f, implementace portu pro procesory Xtensa a vy\u010dlen\u011bn\u00ed zpracovatel\u016f printf do samostatn\u00fdch soubor\u016f pro sn\u00ed\u017een\u00ed velikosti p\u0159i linkov\u00e1n\u00ed.\n<li class=\"l\"> Do picolibc.ld byly p\u0159id\u00e1ny symboly &#171;__eh_*&#187; pro LLVM libunwind.\n<li class=\"l\"> Byla zahrnuta testovac\u00ed podpora 32-bitov\u00fdch syst\u00e9m\u016f SPARC.\n<li class=\"l\"> Byla zaji\u0161t\u011bna podpora c\u00edlov\u00fdch platforem s netypick\u00fdmi typy s plovouc\u00ed desetinnou \u010d\u00e1rkou, kter\u00e9 jsou nyn\u00ed odra\u017eeny v 32-, 64-, 80- a 128-bitov\u00fdch typech v k\u00f3du picolibc.\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora pro RISC architekturu SuperH.\n<li class=\"l\"> Bylo zlep\u0161eno trasov\u00e1n\u00ed z\u00e1sobn\u00edku p\u0159i lad\u011bn\u00ed k\u00f3du v\u00fdjimek na syst\u00e9mech RISC-V.\n<li class=\"l\"> Byla p\u0159id\u00e1na mo\u017enost &#171;-Dfast-bufio=true&#187; pro zv\u00fd\u0161en\u00ed efektivity \u010dten\u00ed a z\u00e1pisu p\u0159i pou\u017eit\u00ed bufio.\n<li class=\"l\"> Bylo provedeno vy\u010di\u0161t\u011bn\u00ed ve\u0159ejn\u00fdch inline funkc\u00ed pro sd\u00edlen\u00ed semantiky gnu_inline.\n<li class=\"l\"> V\u011bt\u0161ina funkc\u00ed fenv byla p\u0159evedena na pou\u017e\u00edv\u00e1n\u00ed inline funkc\u00ed (gnu_inline) nam\u00edsto b\u011b\u017en\u00fdch pro zv\u00fd\u0161en\u00ed v\u00fdkonu.\n<li class=\"l\"> Byla vytvo\u0159ena alternativn\u00ed implementace ctype, kter\u00e1 nepou\u017e\u00edv\u00e1 pole ctype a prov\u00e1d\u00ed p\u0159\u00edm\u00e9 porovn\u00e1n\u00ed hodnot.        <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60476\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0439 \u0421\u0438-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 PicoLibc 1.8.6, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u041a\u0438\u0442\u043e\u043c \u041f\u0430\u043a\u043a\u0430\u0440\u0434\u043e\u043c (Keith Packard, \u043b\u0438\u0434\u0435\u0440 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 X.Org) \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 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432 Atmel AVR. \u041a\u043e\u0434 PicoLibc \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 BSD. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0441\u0431\u043e\u0440\u043a\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 [&hellip;]<\/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-113048","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" 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