{"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\/sv\/blog\/news\/vypusk-standartnoj-si-biblioteki-picolibc-1-8-6","title":{"rendered":"Utg\u00e5van av den standardiserade C-biblioteket PicoLibc 1.8.6","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Utgivningen av standard C-biblioteket PicoLibc 1.8.6 har publicerats, utvecklat av Keith Packard (projektledare f\u00f6r X.Org) f\u00f6r anv\u00e4ndning p\u00e5 inbyggda enheter med begr\u00e4nsad storlek p\u00e5 permanent lagring och RAM. Under utvecklingen l\u00e5nades delar av koden fr\u00e5n newlib-biblioteket fr\u00e5n Cygwin-projektet och AVR Libc, som utvecklades f\u00f6r Atmel AVR-mikrokontroller. Koden f\u00f6r PicoLibc distribueras under BSD-licensen. Biblioteket st\u00f6der byggnation f\u00f6r ARM (32-bit), Aarch64, i386, RISC-V, x86_64, m68k och PowerPC-arkitekturer.     <\/p>\n<p>Projektet b\u00f6rjade under namnet &#171;newlib-nano&#187; och syftade till att omarbeta vissa resurskr\u00e4vande funktioner i Newlib, som var problematiska att anv\u00e4nda p\u00e5 inb\u00e4ddade enheter med begr\u00e4nsad RAM. Till exempel har funktionen stdio i PicoLibc ersatts med en kompakt variant fr\u00e5n biblioteken avrlibc. Koden har ocks\u00e5 rensats fr\u00e5n oanv\u00e4nda komponenter som inte ingick under BSD-licens f\u00f6r inb\u00e4ddade enheter. En f\u00f6renklad variant av initialiseringskoden (crt0) har lagts till, och implementationen av anrop har \u00f6verf\u00f6rts fr\u00e5n &#8216;struct _reent&#8217; till mekanismen TLS (tr\u00e5duppkopplad lagring). Byggverktyget Meson har anv\u00e4nts.     <\/p>\n<p>I den nya utg\u00e5van:  <\/p>\n<ul>\n<li class=\"l\"> \u00c4ndringar fr\u00e5n Newlib 4.4.0 har inf\u00f6rts, s\u00e5som st\u00f6d f\u00f6r typen &#171;long double&#187; p\u00e5 arkitekturerna i386, RISC-V, Aarch64 och x86_64, st\u00f6d f\u00f6r RISC-V Zfinx\/Zdinx-till\u00e4gg, m\u00f6jlighet att anv\u00e4nda masker vid kataloginl\u00e4gg, implementeringen av en port f\u00f6r Xtensa-processorer och separering av printf-hanterare i egna filer f\u00f6r att minska storleken vid l\u00e4nkning.\n<li class=\"l\"> Symbolerna &#171;__eh_*&#187; har lagts till i picolibc.ld f\u00f6r LLVM libunwind.\n<li class=\"l\"> Testst\u00f6d f\u00f6r 32-bitars SPARC-system har inkluderats.\n<li class=\"l\"> St\u00f6d f\u00f6r m\u00e5lplattformar med atypiska flyttalstyper har s\u00e4kerst\u00e4llts, vilket nu \u00e5terspeglas i 32-, 64-, 80- och 128-bitars typer i picolibc-koden.\n<li class=\"l\"> St\u00f6d f\u00f6r RISC-arkitekturen SuperH har lagts till.\n<li class=\"l\"> Stacksp\u00e5rning under felkodning p\u00e5 RISC-V-system har f\u00f6rb\u00e4ttrats.\n<li class=\"l\"> Ett alternativ &#171;-Dfast-bufio=true&#187; har lagts till f\u00f6r att \u00f6ka effektiviteten vid l\u00e4sning och skrivning med bufio.\n<li class=\"l\"> Offentliga inline-funktioner har rensats f\u00f6r att dela semantik av gnu_inline.\n<li class=\"l\"> De flesta fenv-funktioner har \u00f6versatts f\u00f6r att \u00f6ka prestandan genom att anv\u00e4nda inline-funktioner (gnu_inline) i st\u00e4llet f\u00f6r vanliga.\n<li class=\"l\"> En alternativ implementation av ctype har skapats som inte anv\u00e4nder en ctype-array, utan ist\u00e4llet g\u00f6r en direkt j\u00e4mf\u00f6relse av v\u00e4rden.        <\/ul>\n<p>K\u00e4lla: <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 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 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