{"id":45192,"date":"2023-04-11T09:25:44","date_gmt":"2023-03-06T06:40:17","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45192-2\/"},"modified":"2024-04-29T22:57:07","modified_gmt":"2024-04-29T14:57:07","slug":"45192-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45192-2\/","title":{"rendered":""},"content":{"rendered":"

\u306f\u3058\u3081\u306b<\/h1>\n

\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306eRust\u3092\u5b66\u3073\u305f\u3044\u3068\u601d\u3044\uff0c\u4eca\u5e74\u306f\u3044\u304f\u3064\u304b\u672c\u3092\u8aad\u3093\u3060\u308a1\uff0cThe Rust Programming Language\u306e\u8f2a\u8b1b\u4f1a\u3092\u50ac\u3057\u305f\u308a\u3057\u305f\uff0e\u3068\u3053\u308d\u304c\u305d\u3053\u307e\u3067\u5b66\u3093\u3067\u3044\u3066\u3082\uff0cRust\u3067\u306f\u5f37\u529b\u306a\u578b\u30b7\u30b9\u30c6\u30e0\u3068\u6240\u6709\u6a29\u30b7\u30b9\u30c6\u30e0\u304c\u3042\u308b\u305f\u3081\uff0c\u521d\u5b66\u8005\u306e\u79c1\u306b\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u3089\u4e00\u7b4b\u7e04\u3067\u306f\u884c\u304b\u306a\u304b\u3063\u305f\uff0e<\/p>\n

\u305d\u3053\u3067C\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092Rust\u3067\u518d\u5b9f\u88c5\u3057\uff0cRust\u306b\u6163\u308c\u308b\u3053\u3068\u3068\u3057\u305f\uff0e\u81ea\u4f5c\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u3067\u5b66\u3076x86\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306ex86\u30a8\u30df\u30e5\u30ec\u30fc\u30bfpx86\u306fC\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u304c\uff0c\u3053\u308c\u3092\u65b0\u305f\u306bRust\u3067\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3057\u305f\uff0epx86\u3092\u9078\u3093\u3060\u7406\u7531\u306f\u4e00\u5ea6Linux\u3067\u5b9f\u88c5\u3057\u305f\u7d4c\u9a13\u304c\u3042\u308b\u305f\u30812\uff0c\u307e\u305f\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u898f\u6a21\u306e\u5b9f\u88c5\u3067\u3042\u308b\u304b\u3089\uff0c\u984c\u6750\u3068\u3057\u3066\u9069\u5207\u3068\u8003\u3048\u305f\uff0e<\/p>\n

\u672c\u8a18\u4e8b\u3067\u306f\uff0c\u7c21\u6613x86\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u3092C\u304b\u3089Rust\u306b\u5b9f\u88c5\u3057\u76f4\u3059\u4e0a\u3067\u56f0\u3063\u305f\u3053\u3068\u3092\u53d6\u308a\u4e0a\u3052\uff0c\u3069\u306e\u3088\u3046\u306b\u5bfe\u51e6\u3057\u305f\u304b\u3092\u793a\u3059\uff0e<\/p>\n

px86\uff1a\u7c21\u6613x86\u30a8\u30df\u30e5\u30ec\u30fc\u30bf<\/h1>\n

\u4eca\u56de\u5b9f\u88c5\u3057\u305fpx86\u306f\uff0ci386\u306e\u57fa\u672c\u7684\u306a\u547d\u4ee4\u30bb\u30c3\u30c8\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u547d\u4ee4\u30ec\u30d9\u30eb\u30b7\u30df\u30e5\u30ec\u30fc\u30bf\u3067\u3042\u308b3\uff0ex86\u306e\u547d\u4ee4\u304c\u8a18\u8ff0\u3055\u308c\u305fraw\u30d5\u30a1\u30a4\u30eb\u3092\u5165\u529b\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\uff0c\u5b9f\u884c\u3059\u308b\u547d\u4ee4\u306e\u30a2\u30c9\u30ec\u30b9\u3068\u6700\u521d\u306e1\u30d0\u30a4\u30c8\u3092\u6a19\u6e96\u51fa\u529b\u306b\u51fa\u529b\u3059\u308b\uff0e<\/p>\n

\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u306e\u69cb\u6210\u3092\u4e0b\u8a18\u306b\u793a\u3059\uff0e32\u30d3\u30c3\u30c8\u306e\u6c4e\u7528\u30ec\u30b8\u30b9\u30bf8\u672c\uff0c\u30d7\u30ed\u30b0\u30e9\u30e0\u30ab\u30a6\u30f3\u30bf\uff0c\u30d5\u30e9\u30b0\u30ec\u30b8\u30b9\u30bf\u3092\u6301\u3064\uff0e\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u6a5f\u80fd\u306f\uff0c\u3044\u304f\u3064\u304b\u306e\u52a0\u6e1b\u7b97\u547d\u4ee4\uff0c\u5206\u5c90\u547d\u4ee4\u3068\u30b8\u30e3\u30f3\u30d7\u547d\u4ee4\uff0c\u95a2\u6570\u547c\u51fa\u3057\u306b\u95a2\u3059\u308b\u547d\u4ee4\uff0c\u5165\u51fa\u529b\u547d\u4ee4\u3067\u3042\u308b\uff0e\u307e\u305f1M\u30d0\u30a4\u30c8\u306e\u30e1\u30a4\u30f3\u30e1\u30e2\u30ea\u3092\u6301\u3061\uff0c\u5165\u529b\u3055\u308c\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u958b\u59cb\u6642\u306b\u30ed\u30fc\u30c9\u3059\u308b\uff0e<\/p>\n

\u8a73\u7d30\u306f\u81ea\u4f5c\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u3067\u5b66\u3076x86\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u8aad\u3093\u3067\u3044\u305f\u3060\u304d\u305f\u3044\uff0e<\/p>\n

\"px86\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\"<\/div>\n

Rust\u3067\u5b9f\u88c5\u3057\u305f\u969b\u306b\u56f0\u3063\u305f\u3053\u3068<\/h1>\n

\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3067\u30d1\u30cb\u30c3\u30af\u306b\u306a\u308b<\/h2>\n

px86\u306fEIP\u304c0\u306e\u5834\u5408\uff0c\u5373\u3061\u6b21\u306b\u5b9f\u884c\u3059\u308b\u547d\u4ee4\u306e\u30a2\u30c9\u30ec\u30b9\u304c0\u756a\u5730\u306e\u5834\u5408\u306b\uff0c\u30a8\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u7d42\u4e86\u3059\u308b\u4ed5\u69d8\u3067\u3042\u308b\uff0e\u3053\u308c\u306f\u30a8\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u30d7\u30ed\u30b0\u30e9\u30e0\u5074\u3067\u7d42\u4e86\u3055\u305b\u308b\u305f\u3081\u306b\u5c0e\u5165\u3055\u308c\u305f\u4ed5\u69d8\u3067\u3042\u308a\uff0c\u66f8\u7c4d\u306e\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u5fc5\u305a\u6700\u5f8c\u306b0\u756a\u5730\u3078\u30b8\u30e3\u30f3\u30d7\u3059\u308b\uff0e0\u756a\u5730\u3078\u306e\u30b8\u30e3\u30f3\u30d7\u547d\u4ee4\u3092\u5b9f\u884c\u3059\u308b\u969b\u306f\uff0c\u4e0b\u8a18\u306e\u8a08\u7b97\u304c\u884c\u308f\u308c\u308b\uff0e<\/p>\n

EIP <- EIP + <relative address> + 5\r\n<\/code><\/pre>\n
0\u756a\u5730\u3078\u306e\u30b8\u30e3\u30f3\u30d7\u3092\u3059\u308b\u5834\u5408\uff0c\u3053\u306e\u8a08\u7b97\u3092\u884c\u3046\u3068\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u304c\u767a\u751f\u3059\u308b\uff0eC\u8a00\u8a9e\u3067\u306e\u5b9f\u88c5\u3067\u306f\u554f\u984c\u306a\u304fEIP\u304c0\u3068\u306a\u308b\u304c\uff0cRust\u3067\u306fDebug\u30d3\u30eb\u30c9\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u304c\u767a\u751f\u3059\u308b\u3068\u30d1\u30cb\u30c3\u30af\u3068\u306a\u308b\uff0e<\/p>\n
\u3053\u308c\u3092\u9632\u304e\uff0cC\u8a00\u8a9e\u3067\u306e\u5b9f\u88c5\u3068\u540c\u69d8\u306b\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3092\u8a31\u3059\u306b\u306fwrapping_*\u95a2\u6570\u3092\u4f7f\u3046\uff0ewrapping_add\u306f\u30e2\u30b8\u30e5\u30ed\u52a0\u7b97\u3092\u5b9f\u88c5\u3057\u3066\u304a\u308a\uff0c\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306b\u3088\u308b\u30d1\u30cb\u30c3\u30af\u304c\u767a\u751f\u3057\u306a\u3044\uff0ewrapping_add\u306b\u3088\u308b\u52a0\u7b97\u51e6\u7406\u3092\u4e0b\u8a18\u306b\u793a\u3059\uff0e<\/p>\n
let<\/span> result<\/span> =<\/span> 0xFFFFFFFFu32<\/span>.wrapping_add<\/span>(<\/span>1u32<\/span>);<\/span> \/\/ \u3053\u308c\u306fpanic\u306b\u306a\u3089\u306a\u3044<\/span>\r\n\/\/ let result = 0xFFFFFFFFu32 + 1u32; \/\/ \u3053\u308c\u306fpanic\u306b\u306a\u308b<\/span>\r\n<\/code><\/pre>\n
\u7121\u540d\u5171\u7528\u4f53\u3092\u4f7f\u3048\u306a\u3044<\/h2>\n
C\u8a00\u8a9e\u5b9f\u88c5\u306epx86\u3067\u306f\u7121\u540d\u5171\u7528\u4f53\u3092\u4f7f\u3063\u305f\u5b9f\u88c5\u3092\u3057\u3066\u3044\u305f\uff0e\u4e0b\u8a18\u306bModRM\u69cb\u9020\u4f53\u306e\u5b9a\u7fa9\u3092\u793a\u3059\uff0eopecode\u3068disp8\u306f\u69cb\u9020\u4f53\u306e\u30d6\u30ed\u30c3\u30af\u5185\u3067\u7121\u540d\u5171\u7528\u4f53\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u308b\uff0e<\/p>\n
\/* ModR\/M\u3092\u8868\u3059\u69cb\u9020\u4f53 *\/<\/span>\r\ntypedef<\/span> struct<\/span> {<\/span>\r\n    uint8_t<\/span> mod<\/span>;<\/span>\r\n\r\n    \/* opecode\u3068reg_index\u306f\u5225\u540d\u3067\u540c\u3058\u7269 *\/<\/span>\r\n    union<\/span> {<\/span>\r\n        uint8_t<\/span> opecode<\/span>;<\/span>\r\n        uint8_t<\/span> reg_index<\/span>;<\/span>\r\n    };<\/span>  \r\n\r\n    uint8_t<\/span> rm<\/span>;<\/span> \r\n\r\n    \/* SIB \u304c\u5fc5\u8981\u306a mod\/rm \u306e\u7d44\u307f\u5408\u308f\u305b\u306e\u6642\u306b\u4f7f\u3046 *\/<\/span>\r\n    uint8_t<\/span> sib<\/span>;<\/span>\r\n\r\n    union<\/span> {<\/span>\r\n        int8_t<\/span> disp8<\/span>;<\/span> \/\/ disp8 \u306f\u7b26\u53f7\u4ed8\u304d\u6574\u6570<\/span>\r\n        uint32_t<\/span> disp32<\/span>;<\/span>\r\n    };<\/span>  \r\n}<\/span> ModRM<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u3068\u3053\u308d\u304cRust\u3067\u306f\u7121\u540d\u5171\u7528\u4f53\u3092\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u305a\uff0c\u307e\u305f\u69cb\u9020\u4f53\u306e\u30d6\u30ed\u30c3\u30af\u5185\u3067\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u306a\u3044\uff0e\u3088\u3063\u3066\u5171\u7528\u4f53\u3092\u500b\u5225\u306b\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3068\u306a\u308b\uff0eRust\u5b9f\u88c5\u3092\u4e0b\u8a18\u306b\u793a\u3059\uff0e\u5c11\u3057\u4e0d\u4fbf\u3060\u304c\uff0c\u4eca\u306e\u3068\u3053\u308d\u3053\u306e\u3088\u3046\u306a\u5b9a\u7fa9\u65b9\u6cd5\u3057\u304b\u7121\u3044\uff0e<\/p>\n
pub<\/span> union<\/span> OpeReg<\/span> {<\/span>\r\n    pub<\/span> opecode<\/span>:<\/span> u8<\/span>,<\/span>\r\n    reg_index<\/span>:<\/span> u8<\/span>,<\/span>\r\n}<\/span>\r\n\r\npub<\/span> union<\/span> Disp<\/span> {<\/span>\r\n    disp8<\/span>:<\/span> i8<\/span>,<\/span>\r\n    disp32<\/span>:<\/span> u32<\/span>,<\/span>\r\n}<\/span>\r\n\r\npub<\/span> struct<\/span> ModRM<\/span> {<\/span>\r\n    pub<\/span> m<\/span>:<\/span> u8<\/span>,<\/span>\r\n    pub<\/span> opereg<\/span>:<\/span> OpeReg<\/span>,<\/span>\r\n    rm<\/span>:<\/span> u8<\/span>,<\/span>\r\n    sib<\/span>:<\/span> u8<\/span>,<\/span>\r\n    disp<\/span>:<\/span> Disp<\/span>,<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5171\u7528\u4f53\u304c\u4e0d\u4fbf<\/h2>\n
Rust\u3067\u5171\u7528\u4f53\u3092\u4f7f\u3046\u3068\uff0c\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u306e\u6069\u6075\u3092\u53d7\u3051\u3089\u308c\u306a\u304f\u306a\u308b\uff0eModRM\u69cb\u9020\u4f53\u3092\u4f8b\u306b\u53d6\u308b\u3068\uff0cC\u8a00\u8a9e\u3067\u5171\u7528\u4f53\u306e\u30e1\u30f3\u30d0\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5834\u5408\u306fobject.opecode\u3068\u8a18\u8ff0\u3059\u308b\uff0e\u5bfe\u3057\u3066Rust\u3067\u306f\u5171\u7528\u4f53\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304cunsafe\u3067\u3042\u308b\u305f\u3081\uff0c\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\u3068\u306a\u308b\uff0e\u5171\u7528\u4f53\u3092\u4f7f\u3046\u3068\u30e1\u30e2\u30ea\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3067\u306f\u306a\u304f\u306a\u308a\uff0c\u307e\u305funsafe\u3092\u9069\u5b9c\u633f\u5165\u3059\u308b\u5fc5\u8981\u304c\u51fa\u3066\u304f\u308b\u305f\u3081\uff0cC\u8a00\u8a9e\u3088\u308a\u3082\u4e0d\u4fbf\u3055\u3092\u611f\u3058\u308b\uff0e<\/p>\n
let<\/span> value<\/span> =<\/span> unsafe<\/span> {<\/span> modrm<\/span>.disp.disp32<\/span> };<\/span>\r\n<\/code><\/pre>\n
\u3053\u306e\u554f\u984c\u306e\u5bfe\u51e6\u6848\u3068\u3057\u3066\uff0c\u4eca\u56de\u306e\u3088\u3046\u306a\u5358\u7d14\u306a\u5171\u7528\u4f53\u3067\u3042\u308c\u3070\uff0c\u3042\u308b\u578b\u306e\u5024\u3092\u5225\u306e\u578b\u306e\u5024\u306b\u5909\u63db\u3059\u308b\u3088\u3046\u306a\u95a2\u9023\u95a2\u6570\u3092\u5b9a\u7fa9\u3059\u308b\u65b9\u6cd5\u304c\u8003\u3048\u3089\u308c\u308b\uff0e\u4e0b\u8a18\u306bModRM\u69cb\u9020\u4f53\u306edisp\u3092\u8fd4\u3059\u95a2\u6570\u3092\u793a\u3059\uff0e\u30e1\u30f3\u30d0\u5909\u6570disp\u306b\u5bfe\u3057\u3066\uff0cread_disp8\u3068read_disp32\u3068\u3044\u3046\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u305f\uff0e\u53c2\u7167\u3057\u305f\u3044\u578b\u306b\u3088\u3063\u3066\u95a2\u6570\u3092\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\uff0csafe\u306aRust\u30b3\u30fc\u30c9\u3060\u3051\u3067\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\uff0e<\/p>\n
pub<\/span> struct<\/span> ModRM<\/span> {<\/span>\r\n    pub<\/span> m<\/span>:<\/span> u8<\/span>,<\/span>\r\n    pub<\/span> opereg<\/span>:<\/span> OpeReg<\/span>,<\/span>\r\n    rm<\/span>:<\/span> u8<\/span>,<\/span>\r\n    sib<\/span>:<\/span> u8<\/span>,<\/span>\r\n    disp<\/span>:<\/span> u32<\/span>,<\/span>\r\n}<\/span>\r\n\r\nimpl<\/span> ModRM<\/span> {<\/span>\r\n    fn<\/span> read_disp8<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> u8<\/span> {<\/span>\r\n        (<\/span>disp<\/span> &<\/span> 0xFF<\/span>)<\/span> as<\/span> u8<\/span>\r\n    }<\/span>\r\n    fn<\/span> read_disp32<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> u32<\/span> {<\/span>\r\n        disp<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
safe\u306aRust\u30b3\u30fc\u30c9\u3060\u3051\u3067\u4efb\u610f\u306e\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u52d5\u7684\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u3044<\/h2>\n
C\u8a00\u8a9e\u3067\u306f\uff0c\u30e1\u30e2\u30ea\u4e0a\u306b\u4efb\u610f\u306e\u578b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u3042\u308b\u3082\u306e\u3068\u3057\u3066\u30a2\u30af\u30bb\u30b9\u304c\u3067\u304d\u305f\uff0eC\u306b\u304a\u3051\u308b\u52d5\u7684\u306a\u53c2\u7167\u4f8b\u3092\u4e0b\u8a18\u306b\u793a\u3059\uff0e\u4e0b\u8a18\u306e\u4e09\u95a2\u6570\u306f\u3044\u305a\u308c\u3082const char*\u578b\u3092\u5f15\u6570\u306b\u6301\u3064\u304c\uff0c\u5185\u90e8\u3067\u306f\u305d\u308c\u305e\u308c\u5225\u306e\u578b\u3078\u306e\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u30e1\u30e2\u30ea\u3092\u53c2\u7167\u3057\u3066\u3044\u308b\uff0e<\/p>\n
static<\/span> void<\/span> PrintDB<\/span>(<\/span>const<\/span> char<\/span> *<\/span>str<\/span>)<\/span> {<\/span>\r\n  printf<\/span>(<\/span>\"    db %d<\/span>\\n<\/span>\"<\/span>,<\/span> *<\/span>(<\/span>uint8_t<\/span> *<\/span>)<\/span>str<\/span>);<\/span>\r\n}<\/span>\r\n\r\nstatic<\/span> void<\/span> PrintDW<\/span>(<\/span>const<\/span> char<\/span> *<\/span>str<\/span>)<\/span> {<\/span>\r\n  printf<\/span>(<\/span>\"    dw %d<\/span>\\n<\/span>\"<\/span>,<\/span> *<\/span>(<\/span>uint16_t<\/span> *<\/span>)<\/span>str<\/span>);<\/span>\r\n}<\/span>\r\n\r\nstatic<\/span> void<\/span> PrintDD<\/span>(<\/span>const<\/span> char<\/span> *<\/span>str<\/span>)<\/span> {<\/span>\r\n  printf<\/span>(<\/span>\"    dd %d<\/span>\\n<\/span>\"<\/span>,<\/span> *<\/span>(<\/span>uint32_t<\/span> *<\/span>)<\/span>str<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
Rust\u3067\u3082\u3053\u306e\u3088\u3046\u306a\u30a2\u30af\u30bb\u30b9\u304c\u53ef\u80fd\u3060\u304c\uff0c\u524d\u7bc0\u3068\u540c\u69d8\u306b\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3092\u4fdd\u8a3c\u3067\u304d\u305a\u30b3\u30fc\u30c9\u3068\u306a\u308b\uff0e<\/p>\n
byteorder\u30af\u30ec\u30fc\u30c8\u306f\u305d\u306e\u3088\u3046\u306a\u30a2\u30af\u30bb\u30b9\u3092\u30e9\u30c3\u30d7\u3057\u3066\u304a\u308a\uff0c\u30b3\u30fc\u30c0\u306f\u5b89\u5168\u306aRust\u30b3\u30fc\u30c9\u306e\u7bc4\u7587\u3067\u306e\u5b9f\u88c5\u304c\u53ef\u80fd\u3068\u306a\u308b\uff0ebyteorder\u30af\u30ec\u30fc\u30c8\u3092\u4f7f\u3063\u305f\u53c2\u7167\u4f8b\u3092\u4e0b\u8a18\u306b\u793a\u3059\uff0eEnumLittleEndian\u306e\u95a2\u9023\u95a2\u6570read_*\u306f\u30ea\u30c8\u30eb\u30a8\u30f3\u30c7\u30a3\u30a2\u30f3\u3067\u5024\u3092\u8aad\u3080\u306e\u306b\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308b\uff0ex86\u306f\u30ea\u30c8\u30eb\u30a8\u30f3\u30c7\u30a3\u30a2\u30f3\u65b9\u5f0f\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u305f\u3081\uff0cLittleEndian\u3092\u4ecb\u3057\u3066\u547d\u4ee4\u3068\u30c7\u30fc\u30bf\u3092\u53c2\u7167\u3059\u308b\uff0e<\/p>\n
fn<\/span> print_bpb_structure<\/span>(<\/span>buffer<\/span>:<\/span> &<\/span>[<\/span>u8<\/span>;<\/span> FILE_SIZE<\/span>])<\/span> {<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {:02x} {:02x} {:02x}\"<\/span>,<\/span> \"BS_jmpBoot:\"<\/span>,<\/span> buffer<\/span>[<\/span>0<\/span>]<\/span> as<\/span> u8<\/span>,<\/span> buffer<\/span>[<\/span>1<\/span>]<\/span> as<\/span> u8<\/span>,<\/span> buffer<\/span>[<\/span>2<\/span>]<\/span> as<\/span> u8<\/span>);<\/span>\r\n\r\n    print!<\/span>(<\/span>\"{:<20} \"<\/span>,<\/span> \"BS_OEMName:\"<\/span>);<\/span>\r\n    for<\/span> i<\/span> in<\/span> 0<\/span>..<\/span>8<\/span> {<\/span>\r\n        print!<\/span>(<\/span>\"{}\"<\/span>,<\/span> buffer<\/span>[<\/span>i<\/span> +<\/span> 3<\/span>]<\/span> as<\/span> char<\/span>);<\/span>\r\n    }<\/span>\r\n    print!<\/span>(<\/span>\"<\/span>\\n<\/span>\"<\/span>);<\/span>\r\n\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_BytsPerSec:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u16<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>11<\/span>..<\/span>]));<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_SecPerClus:\"<\/span>,<\/span> buffer<\/span>[<\/span>13<\/span>]<\/span> as<\/span> u8<\/span>);<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_RsvdSecCnt:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u16<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>14<\/span>..<\/span>]));<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_NumFATs:\"<\/span>,<\/span> buffer<\/span>[<\/span>16<\/span>]<\/span> as<\/span> u8<\/span>);<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_RootEntCnt:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u16<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>17<\/span>..<\/span>]));<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_TotSec16:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u16<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>19<\/span>..<\/span>]));<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {:02x}\"<\/span>,<\/span> \"BPB_Media:\"<\/span>,<\/span> buffer<\/span>[<\/span>21<\/span>]<\/span> as<\/span> u8<\/span>);<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_FATSz16:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u16<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>22<\/span>..<\/span>]));<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_SecPerTrk:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u16<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>24<\/span>..<\/span>]));<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_NumHeads:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u16<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>26<\/span>..<\/span>]));<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_HiddSec:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u32<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>28<\/span>..<\/span>]));<\/span>\r\n    println!<\/span>(<\/span>\"{:<20} {}\"<\/span>,<\/span> \"BPB_TotSec32:\"<\/span>,<\/span> LittleEndian<\/span>::<\/span>read_u32<\/span>(<\/span>&<\/span>buffer<\/span>[<\/span>32<\/span>..<\/span>]));<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u304a\u308f\u308a\u306b<\/h1>\n
px86\u3092Rust\u3067\u5b9f\u88c5\u3059\u308b\u4e2d\u3067\uff0cRust\u7279\u6709\u306e\u56f0\u3063\u305f\u3053\u3068\u306b\u76f4\u9762\u3057\u305f\uff0e\u3057\u304b\u3057\u3053\u308c\u3089\u306e\u56f0\u3063\u305f\u3053\u3068\u306fRust\u304c\u60f3\u5b9a\u5916\u306e\u6319\u52d5\uff08\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3084\u5b89\u5168\u3067\u306a\u3044\u30e1\u30e2\u30ea\u306e\u53c2\u7167\uff09\u304b\u3089\u30d7\u30ed\u30b0\u30e9\u30de\u3092\u5b88\u308b\u305f\u3081\u306b\u5c0e\u5165\u3055\u308c\u305f\u6a5f\u80fd\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u3063\u305f\uff0e\u307e\u305f\u3053\u308c\u3089\u306e\u56f0\u3063\u305f\u3053\u3068\u306f\uff0cC\u8a00\u8a9e\u7b49\u3068\u306f\u7570\u306a\u308b\u65b9\u6cd5\u3084\u4fbf\u5229\u306a\u30af\u30ec\u30fc\u30c8\u3067\u89e3\u6d88\u3067\u304d\u308b\u3053\u3068\u304c\u5206\u304b\u3063\u305f\uff0e<\/p>\n
\u4eca\u56de\uff0cRust\u3067\u5b9f\u88c5\u3057\u305fpx86\u306fGitHub\u3067\u516c\u958b\u3057\u305f\uff0eRust\u306e\u521d\u5b66\u8005\u3068x86\u306b\u3064\u3044\u3066\u8208\u5473\u304c\u3042\u308b\u65b9\u306e\u4e00\u52a9\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3042\u308b\uff0e<\/p>\n
\u53c2\u8003<\/h1>\n
d0iasm\/x86emu: \u4f4e\u30ec\u30a4\u30e4\u30ac\u30fc\u30eb\u3067\u304a\u99b4\u67d3\u307f\u306ed0iasm\u3055\u3093\u306b\u3088\u308bpx86\u306eRust\u5b9f\u88c5\uff0e\u79c1\u306e\u5b9f\u88c5\u3088\u308a\u3082\u30b3\u30f3\u30d1\u30af\u30c8\u3067\u3042\u308b\u305f\u3081\uff0c\u3068\u3066\u3082\u53c2\u8003\u306b\u306a\u308b\uff0e<\/p>\n
x86\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u3092Rust\u3067\u5b9f\u88c5\u3059\u308b\u30ed\u30b0: \u3053\u3061\u3089\u306f\u5c11\u3057\u305a\u3064Rust\u3067\u5b9f\u88c5\u3057\uff0c\u305d\u306e\u969b\u306b\u3042\u3063\u305f\u554f\u984c\u3092\u968f\u6642\u7d39\u4ecb\u3057\u3066\u3044\u308b\uff0e\u3053\u3061\u3089\u306f\u30cf\u30de\u308a\u3069\u3053\u308d\u304c\u3088\u304f\u5206\u304b\u308b\uff0e<\/p>\n
\n
\u5b9f\u8df5Rust\u5165\u9580\u3068\u5b9f\u8df5Rust\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5165\u9580\u304c\u3068\u3066\u3082\u53c2\u8003\u306b\u306a\u3063\u305f\uff0e\u00a0\u21a9<\/p>\n
\u4ee5\u524d\u306e\u30dd\u30b9\u30c8(\u300e\u81ea\u4f5c\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u3067\u5b66\u3076x86\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u300f\u3092Manjaro\uff08Linux\uff09\u3067\u5b66\u3076)[https:\/\/qiita.com\/Kenta11\/items\/b36efc2252272f11b105]\u3092\u53c2\u7167\u306e\u3053\u3068\uff0e\u00a0\u21a9<\/p>\n
\u66f8\u7c4d\u306e\u540d\u524d\u306b\u306f\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u3068\u3042\u308b\u305f\u3081\uff0c\u672c\u30dd\u30b9\u30c8\u3067\u306f\u4e00\u8cab\u3057\u3066\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u3068\u3059\u308b\uff0e\u00a0\u21a9<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u306f\u3058\u3081\u306b \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306eRust\u3092\u5b66\u3073\u305f\u3044\u3068\u601d\u3044\uff0c\u4eca\u5e74\u306f\u3044\u304f\u3064\u304b\u672c\u3092\u8aad\u3093\u3060\u308a1\uff0cThe Rust Pro […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45192","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45192-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u306f\u3058\u3081\u306b \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306eRust\u3092\u5b66\u3073\u305f\u3044\u3068\u601d\u3044\uff0c\u4eca\u5e74\u306f\u3044\u304f\u3064\u304b\u672c\u3092\u8aad\u3093\u3060\u308a1\uff0cThe Rust Pro […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45192-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-06T06:40:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T14:57:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d5d9637434c4406cf202d\/8-0.png\" \/>\n<meta name=\"author\" content=\"\u79d1, \u96c5\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u79d1, \u96c5\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/45192-2\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/45192-2\/\",\"name\":\"- Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2023-03-06T06:40:17+00:00\",\"dateModified\":\"2024-04-29T14:57:07+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/41e222757cdd2a3365361328bd79970a\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/45192-2\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - 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