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OS Developer として Rustを使ってみる/using-rust-for-os-developer
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kotetu (kotetuco)
November 21, 2016
Programming
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570
OS Developer として Rustを使ってみる/using-rust-for-os-developer
Rust入門者の集い (2016.11.21)でLT発表を行った際に使った資料です。
kotetu (kotetuco)
November 21, 2016
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Transcript
OS Developer ͱͯ͠ RustΛͬͯΈΔ Rustೖऀͷू͍ (2016.11.21) @kotetu
܀ࢁ ప (@kotetu) • Github : kotetuco • SansanגࣜձࣾͰiOSΞϓϦ࡞ͬͯ·͢ •
໊ཧΞϓϦͷձࣾ • ʮͦΕɺૣ͘ݴͬͯΑ͒ʯͷCMͰ͓ͳ͡Έ
͔͜͜Β iOS OS ͷͰ͢ɻ
ࣗ࡞OS • ֶੜ࣌ʹগ͍ͬͯͨ͠ • ʮ30ͰͰ͖ΔOSࣗ࡞ೖʯ(໊ஶ) Ͱݴ͏ͱ 23͘Β͍·Ͱ
Rustͱͷग़ձ͍ • OS͕ॻ͚Δݴޠ͕͋Δͧ • SwiftͬΆ͍ॻ͖ํ͕ग़དྷΔͬΆ͍ͧɹɹɹɹ (ྺ࢙తʹRustͷํ͕ઌͰ͚͢Ͳɾɾ) • ੲॻ͍͍ͯͨOSΛRustͰॻ͖ͯ͠ΈΔʁ
ͱ͍͏Θ͚Ͱɺ࢝ΊͯΈͨ • ructiss • https://github.com/kotetuco/ructiss • OSͱͯ͠·ͩԿͰ͖͍ͯͳ͍ (ٽ • Rust΄ͱΜͲॻ͍͍ͯͳ͍
(ٽ
ը໘ΛനృΓͰ͖ͳ͍ (ٽ
։ൃڥʁ
DockerfileίϯςφԽ͠·ͨ͠ • rust-baremetal • https://github.com/kotetuco/rust- baremetal • ΤϛϡϨʔλʹ͍ͭͯผ్QEMUͳͲΛ ༻ҙ͍ͯͩ͘͠͞
RustͰOSΛॻ͘ϝϦοτ(1/2) • ҆શੑɺϝϞϦཧ • ඪ४͕Πϛϡʔλϒϧͳͷྑ͍ͳ • “unsafe”ϒϩοΫͰΞϯηʔϑίʔυΛݶఆ • ιϑτΣΞͷ҆શੑ͕ٻΊΒΕΔʹ ͑ΔͷͰʁ
RustͰOSΛॻ͘ϝϦοτ(2/2) • OS meets ؔܕݴޠ (ͬͯΈ͍ͨ) • OS meets Reactive
Programing ɹɹɹɹ (RxRustͬͯΈ͍ͨ) • Cargo(ϏϧυɾύοέʔδϚωʔδϟ)ͷଘࡏ • C/C++ͱͷI/F
RustͰOSΛॻ͘ࡍͷཹҙ • NightlyϏϧυͰ͔͠։ൃͰ͖ͳ͍ • IntelΞʔΩςΫνϟҎ֎ͷϓϥοτϑΥʔϜ ʹ͍֤ͭͯίϛϡχςΟʹґଘ
ϓϥοτϑΥʔϜαϙʔτঢ়گ (Getting StartedΑΓ) • 1ڃ(Ϗϧυग़དྷ͔ͭಈ͘͜ͱΛอূ͢Δ) • IntelΞʔΩςΫνϟ(32/64bit, Win/Mac/Linux) • ARMܥAndroid,
iOSͳͲ3ڃ (αϙʔτର ͕ͩɺެࣜͰมߋཧߦ͍ͬͯͳ͍)
·ͱΊ • ͜Ε·ͰC/C++͡Όͳ͍ͱॻ͚ͳ͔ͬͨ ʹ͍ͭͯɺ༗ྗͳผͳબࢶ͕Ͱ͖ͨ • ίϛϡχςΟΛΓ্͍͛ͯͬͯɺC/C++Έ ͍ͨʹ༷ʑͳͰΘΕͯ΄͍͠ͳ
͓·͚ɿനృΓࣦഊίʔυ(ൈਮ) fn write_mem8(addr:u32, data:u8) { unsafe { asm!("mov BYTE PTR
[$0], $1" : : "r"(addr), "r"(data) : : "intel"); } } pub extern fn init_os() { let vram_address = 0x000a0000; for offset in 0x00000000..0x00010000 { let vram: *mut u8 = 0x000a0000 as *mut u8; write_mem8(vram_address + offset, 0x0f); } }
༨ஊɿࣗ࡞OSͷํͷʹ͍ͭͯ • ʮࣗ࡞OS͘͘ձʯʹࢀՃ͍ͯ͠·͢ • ࣍ճ 11/26() ։࠵ • https://atnd.org/events/82288