{"id":45393,"date":"2023-11-15T07:11:36","date_gmt":"2023-07-07T03:15:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45393-2\/"},"modified":"2024-05-04T09:09:05","modified_gmt":"2024-05-04T01:09:05","slug":"45393-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45393-2\/","title":{"rendered":""},"content":{"rendered":"

Rust\u3067RISC-V OS\u81ea\u4f5c\uff01\u306f\u3058\u3081\u306e\u4e00\u6b69<\/h1>\n

\u3053\u306e\u8a18\u4e8b\u306f\u81ea\u4f5cOS Advent Calendar 2018\u306e4\u65e5\u76ee\u306e\u8a18\u4e8b\u3068\u3057\u3066\u66f8\u304b\u308c\u307e\u3057\u305f\u3002<\/p>\n

hello world\u306e\u30b3\u30fc\u30c9\u306f\u4e0b\u8a18\u306b\u3042\u308a\u307e\u3059\u3002
\nriscv-rust-hello<\/p>\n

\u306f\u3058\u3081\u306b<\/h2>\n

Rust<\/h3>\n

Rust\u306f\u901f\u5ea6\u3001\u5b89\u5168\u6027\u3001\u4e26\u884c\u6027\u306e3\u3064\u306e\u30b4\u30fc\u30eb\u306b\u30d5\u30a9\u30fc\u30ab\u30b9\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002<\/p><\/blockquote>\n

\u3044\u308f\u305a\u3068\u77e5\u308c\u305f\u81f3\u9ad8\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002
\n2018\/10\u306bversion 1.30\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3001stable (\u5b89\u5b9a\u7248)\u3067\u3082RISC-V\u304a\u3088\u3073no-std(\u30d9\u30a2\u30e1\u30bf\u30eb)\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n

RISC-V<\/h3>\n

\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306eRISC CPU\u547d\u4ee4\u30bb\u30c3\u30c8\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3067\u3059\u3002<\/p>\n

\u3044\u308f\u305a\u3068\u77e5\u308c\u305f\u81f3\u9ad8\u306e\u547d\u4ee4\u30bb\u30c3\u30c8\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3067\u3059\u3002
\n\u6765\u5e74\u3042\u305f\u308a\u306fHypervisor\u62e1\u5f35\u547d\u4ee4\u30bb\u30c3\u30c8\u306e\u76db\u308a\u4e0a\u304c\u308a\u3092\u671f\u5f85\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

OS\u81ea\u4f5c<\/h3>\n

\u3044\u308f\u305a\u3068\u77e5\u308c\u305f\u81f3\u9ad8\u306e\u622f\u308c\u3067\u3059\u3002
\n\u4f4e\u30ec\u30a4\u30e4\u597d\u304d\u306b\u306f\u305f\u307e\u3089\u306a\u3044\u3067\u3059\u306d\uff01<\/p>\n

\u3064\u307e\u308a\u3001\u672c\u8a18\u4e8b\u306e\u8da3\u65e8\u306f\u3001\u81f3\u9ad8\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3001\u81f3\u9ad8\u306e\u547d\u4ee4\u30bb\u30c3\u30c8\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u3001\u81f3\u9ad8\u306e\u622f\u308c\u3092\u3059\u308b\uff01\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n

\u672c\u5f53\u306e\u306f\u3058\u3081\u306b<\/h2>\n

x86\u3067OS\u81ea\u4f5c\u3092\u59cb\u3081\u308b\u306e\u30821\u3064\u306e\u6709\u529b\u306a\u9078\u629e\u80a2\u3067\u3059\u3002
\n\u305d\u306e\u5834\u5408\u306e\u5229\u70b9\u3068\u6b20\u70b9\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5229\u70b9<\/p>\n

    \n
  • \n
      \u30af\u30ed\u30b9\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u4e0d\u8981\u306a\u305f\u3081\u3001\u958b\u767a\u74b0\u5883\u3092\u6574\u3048\u3084\u3059\u3044<\/ul>\n<\/li>\n<\/ul>\n

       <\/p>\n

        \n
      • \n
          \u666e\u6bb5\u4f7f\u7528\u3057\u3066\u3044\u308bPC\u306a\u3069\u3067\u52d5\u4f5c\u3059\u308bOS\u304c\u4f5c\u308c\u308b<\/ul>\n<\/li>\n<\/ul>\n

           <\/p>\n

            \u4ed6\u306e\u547d\u4ee4\u30bb\u30c3\u30c8\u304c\u7c21\u5358\u306b\u601d\u3048\u308b<\/ul>\n

            \u6b20\u70b9<\/p>\n

              \n
            • \n
                \u6b74\u53f2\u7684\u7d4c\u7def\u304c\u3042\u308a\u3001\u547d\u4ee4\u30bb\u30c3\u30c8\u304c\u3068\u306b\u304b\u304f\u8907\u96d1<\/ul>\n<\/li>\n<\/ul>\n

                 <\/p>\n

                  \u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u3084CPU\u81ea\u4f5c\u306b\u624b\u3092\u4f38\u3070\u3057\u306b\u304f\u3044<\/ul>\n

                  \u3053\u308c\u306b\u5bfe\u3057\u3066\u3001RISC-V\u3067OS\u81ea\u4f5c\u3092\u59cb\u3081\u308b\u5834\u5408\u3001\u305d\u306e\u5229\u70b9\u6b20\u70b9\u306fx86\u306e\u53cd\u5bfe\u3067\u3059\u3002
                  \n\u958b\u767a\u74b0\u5883\u3082\u304b\u306a\u308a\u6574\u5099\u3055\u308c\u3066\u304d\u3066\u3044\u308b\u305f\u3081\u3001RISC-V\u3067OS\u81ea\u4f5c\u3092\u59cb\u3081\u308b\u306e\u306f\u60aa\u304f\u306a\u3044\u9078\u629e\u80a2\u3067\u3042\u308b\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n

                  \u307e\u305f\u3001Rust\u3092\u4f7f\u3046\u7406\u7531\u306f\u3001\u79c1\u304c\u597d\u304d\u3060\u304b\u3089\u3067\u3059\u3002<\/p>\n

                  \u5bfe\u8c61\u8aad\u8005<\/h3>\n

                  Rust\u3001RISC-V\u3001OS\u81ea\u4f5c\u30013\u3064\u306e\u3046\u3061\u3069\u308c\u304b\u306e\u8981\u7d20\u3001\u304a\u3088\u3073\u3001\u4f4e\u30ec\u30a4\u30e4\u6280\u8853\u306b\u8208\u5473\u304c\u3042\u308b\u65b9\u3092\u5bfe\u8c61\u306b\u3057\u3066\u3044\u307e\u3059\u3002
                  \n\u8457\u8005\u306e\u529b\u4e0d\u8db3\u306b\u3088\u308a\u3001\u4f4e\u30ec\u30a4\u30e4\u304c\u5168\u304f\u5206\u304b\u3089\u306a\u3044\u72b6\u614b\u304b\u3089\u7406\u89e3\u3067\u304d\u308b\u30af\u30aa\u30ea\u30c6\u30a3\u306b\u306a\u3063\u3066\u3044\u307e\u305b\u3093\u3002
                  \n\u3082\u3057\u672c\u8a18\u4e8b\u3067\u8208\u5473\u3092\u304a\u6301\u3061\u3044\u305f\u3060\u3051\u305f\u5834\u5408\u306f\u3001\u30b3\u30e1\u30f3\u30c8\u6b04\u3001twitter\u306a\u3069\u3067\u304a\u5c0b\u306d\u304f\u3060\u3055\u3044\u3002<\/p>\n

                  \u30b9\u30b3\u30fc\u30d7<\/h3>\n
                    \n
                  • \n
                      \u74b0\u5883\u69cb\u7bc9<\/ul>\n<\/li>\n<\/ul>\n

                       <\/p>\n

                        \n
                      • \n
                          qemu-riscv\u3067\u30d9\u30a2\u30e1\u30bf\u30ebhello world<\/ul>\n<\/li>\n<\/ul>\n

                           <\/p>\n

                            TIPS<\/ul>\n

                            \u5177\u4f53\u7684\u306b\u306f\u3001elf\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3001elf\u306e\u30ed\u30fc\u30c9\u306fqemu\u306b\u4efb\u305b\u3001\u3068\u308a\u3042\u3048\u305a\u52d5\u304f\u3082\u306e\u3092\u4f5c\u3063\u3066\u3044\u304d\u307e\u3059\u3002
                            \nTIPS\u3067\u306f\u3001Rust\u306e\u4fbf\u5229\u306a\u6a5f\u80fd\u3084\u3001nightly Rust\u3092\u4f7f\u3048\u3070\u53ef\u80fd\u306a\u3053\u3068\u3092\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n

                            \u30b9\u30b3\u30fc\u30d7\u5916<\/h3>\n
                              \n
                            • \n
                                bootloader<\/ul>\n<\/li>\n<\/ul>\n

                                 <\/p>\n

                                  OS\u3068\u547c\u3079\u308b\u30ec\u30d9\u30eb\u306e\u3082\u306e\u3092\u4f5c\u308b\u3053\u3068<\/ul>\n

                                  \u3053\u308c\u3089\u306f\u4eca\u5f8c\u306e\u8ab2\u984c\u3067\u3042\u308b\u305f\u3081\u3001\u8a18\u4e8b\u306e\u4e2d\u3067\u73fe\u5728\u8a18\u8f09\u3067\u304d\u308b\u5185\u5bb9\u3092\u66f8\u304d\u307e\u3059\u3002
                                  \n\u4eca\u5f8c\u958b\u767a\u3092\u7d99\u7d9a\u3057\u3066\u3044\u304f\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n

                                  \u74b0\u5883\u69cb\u7bc9<\/h2>\n

                                  \u79c1\u306e\u74b0\u5883\u306f\u4e0b\u8a18\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n

                                  Ubuntu 16.04 LTS@VirtualBox<\/p>\n

                                  Rust\u74b0\u5883\u69cb\u7bc9<\/h3>\n

                                  \u307e\u305a\u3001Rust\u306e\u74b0\u5883\u69cb\u7bc9\u3092\u3057\u307e\u3057\u3087\u3046\u3002
                                  \nRust 1.30\u304b\u3089\u3001RISC-V\u306e\u30af\u30ed\u30b9\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\u3002
                                  \n\u305d\u306e\u305f\u3081\u3001stable Rust\u3067RISC-V\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u4f5c\u6210\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\u3002
                                  \n\u305f\u3060\u3057\u3001\u5b9f\u7528\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u308b\u305f\u3081\u306b\u306f\u3001\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u66f8\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5225\u30d5\u30a1\u30a4\u30eb\u306b\u8a18\u8ff0\u3057\u305f\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u3059\u308b\u65b9\u6cd5\u304c\u306a\u3044\u305f\u3081\u3001stable\u3060\u3051\u3067\u958b\u767a\u3092\u9032\u3081\u308b\u305f\u3081\u306b\u306f\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u30a2\u30bb\u30f3\u30d6\u30e9\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002
                                  \n\u8a73\u7d30\u306f\u5f8c\u8ff0\u3059\u308briscv-toolchain\u69cb\u7bc9\u3067\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

                                  \u307e\u305a\u306f\u3001\u666e\u901a\u306bRust\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3057\u3087\u3046\u3002\u9078\u629e\u80a2\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067OK\u3067\u3059\u3002\u51fa\u529b\u3055\u308c\u308bversion\u306f\u6642\u671f\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n

                                  $ curl https:\/\/sh.rustup.rs -sSf | sh\r\n$ rustc --version\r\nrustc 1.30.0 (da5f414c2 2018-10-24)\r\n<\/code><\/pre>\n
                                  \u6b21\u306b\u3001RISC-V\u306etarget\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n
                                  $ rustup target add riscv32imac-unknown-none-elf\r\n<\/code><\/pre>\n
                                  Rust\u306e\u74b0\u5883\u69cb\u7bc9\u306f\u4ee5\u4e0a\u3067\u3059\u3002<\/p>\n
                                  riscv-toolchain\u69cb\u7bc9<\/h4>\n
                                  Rust\u306b\u306f\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u30a2\u30bb\u30f3\u30d6\u30ea(asm)\u3068\u3001\u81ea\u7531\u5f62\u5f0f\u306e\u30a2\u30bb\u30f3\u30d6\u30ea(global_asm)\u304c\u3042\u308a\u307e\u3059\u3002\u6b8b\u5ff5\u306a\u304c\u3089\u3001\u3053\u308c\u3089\u306e\u6a5f\u80fd\u306fnightly\u3067\u3057\u304b\u4f7f\u3048\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001stable\u3067\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u4f7f\u3046\u5834\u5408\u3001\u5f53\u9762\u306f\u3001\u5916\u90e8\u30d5\u30a1\u30a4\u30eb(.s)\u306b\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u66f8\u3044\u3066\u3001\u30a2\u30bb\u30f3\u30d6\u30e9\u306b\u304b\u3051\u308b\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002
                                  \n\u3067\u3059\u306e\u3067\u3001stable\u3067RISC-V\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3059\u308b\u306b\u306f\u3001riscv-toolchain\u3092\u69cb\u7bc9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
                                  \u3068\u3044\u3046\u3053\u3068\u3067\u3001\u82e5\u5e72\u8ca0\u3051\u305f\u6c17\u6301\u3061\u306b\u306a\u308a\u306a\u304c\u3089\u3001riscv-toolchain\u3092\u69cb\u7bc9\u3057\u307e\u3057\u3087\u3046\u3002
                                  \ngit clone\u3068\u30d3\u30eb\u30c9\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u305f\u3081\u3001\u53c2\u8003\u306e\u30ea\u30f3\u30af\u3067\u3082\u8fbf\u308a\u306a\u304c\u3089\u304a\u5f85\u3061\u304f\u3060\u3055\u3044\u3002<\/p>\n
                                  RISC-V GNU Compiler Toolchain<\/p>\n
                                  \/opt\/riscv\u306b\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3092\u60f3\u5b9a\u3057\u3066\u66f8\u304d\u307e\u3059\u3002\/opt\/riscv\u306b\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u3092\u4ed8\u3051\u3066\u304a\u304f\u304b\u3001make linux\u306bsudo\u3092\u3064\u3051\u3066\u5b9f\u884c\u3057\u3066\u4e0b\u3055\u3044\u3002<\/p>\n
                                  $ git clone --recursive https:\/\/github.com\/riscv\/riscv-gnu-toolchain\r\n$ cd riscv-gnu-toolchain\r\n$ sudo apt-get install autoconf automake autotools-dev curl libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev libexpat-dev\r\n$ .\/configure --prefix=\/opt\/riscv --with-arch=rv32gc --with-abi=ilp32\r\n$ make linux\r\n<\/code><\/pre>\n
                                  .bashrc\u306a\u3069\u306b\u3001\/opt\/riscv\/bin\u3078\u306e\u30d1\u30b9\u3092\u8ffd\u52a0\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
                                  PATH=$PATH:\/opt\/riscv\/bin\r\n<\/code><\/pre>\n
                                  $ riscv32-unknown-linux-gnu-gcc --version\r\nriscv32-unknown-linux-gnu-gcc (GCC) 8.2.0\r\n<\/code><\/pre>\n
                                  \u3053\u308c\u3067\u3001riscv-toolchain\u306e\u69cb\u7bc9\u306f\u7d42\u4e86\u3067\u3059\u3002<\/p>\n
                                  qemu-riscv\u74b0\u5883\u69cb\u7bc9<\/h3>\n
                                  version 3.0\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u30022.12\u3060\u3068\u672c\u8a18\u4e8b\u5185\u3067\u5229\u7528\u3059\u308bsifive_u\u304c\u3046\u307e\u304f\u52d5\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002
                                  \n\u73fe\u5728Rust\u304c\u30bf\u30fc\u30b2\u30c3\u30c8\u3068\u3057\u3066\u3044\u308b\u306e\u306f\u3001rv32 (32-bit\u547d\u4ee4\u30bb\u30c3\u30c8)\u3067\u3059\u306e\u3067\u3001\u6642\u9593\u7bc0\u7d04\u306e\u305f\u3081\u3001rv32\u3060\u3051\u3092\u30d3\u30eb\u30c9\u3057\u307e\u3059\u3002<\/p>\n
                                  \/opt\/qemu-riscv\u306b\u69cb\u7bc9\u3057\u307e\u3059\u3002\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u3092\u3064\u3051\u3066\u304a\u304f\u304b\u3001make install\u306bsudo\u3092\u4ed8\u3051\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                                  $ wget https:\/\/download.qemu.org\/qemu-3.0.0.tar.xz\r\n$ tar xf qemu-3.0.0.tar.xz\r\n$ cd qemu-3.0.0\/\r\n$ mkdir build\r\n$ cd build\/\r\n$ sudo apt-get install git libglib2.0-dev libfdt-dev libpixman-1-dev zlib1g-dev\r\n$ ..\/configure --target-list=riscv32-softmmu --prefix=\/opt\/qemu-riscv\r\n$ make\r\n$ make install\r\n<\/code><\/pre>\n
                                  .bashrc\u306a\u3069\u306b\u3001\/opt\/qemu-riscv\/bin\u306e\u30d1\u30b9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n
                                  $ qemu-system-riscv32 --version\r\nQEMU emulator version 3.0.0\r\n<\/code><\/pre>\n
                                  qemu-riscv\u3067\u30d9\u30a2\u30e1\u30bf\u30ebhello world<\/h2>\n
                                  \u3068\u304f\u306b\u304b\u304f\u52d5\u304b\u3057\u3066\u307f\u308b<\/h3>\n
                                  Hello World\u3067\u304d\u308b\u30b5\u30f3\u30d7\u30eb\u3092\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/p>\n
                                  $ git clone https:\/\/github.com\/tomoyuki-nakabayashi\/riscv-rust-hello.git\r\n$ cd riscv-rust-hello\/\r\n$ env CC=riscv32-unknown-linux-gnu-gcc cargo run\r\n    Updating crates.io index\r\n Downloading cc v1.0.25                                                         \r\n   Compiling cc v1.0.25                                                         \r\n   Compiling hello v0.1.0 (\/home\/nakabayashi\/build\/riscv-rust-hello)            \r\n    Finished dev [unoptimized + debuginfo] target(s) in 43.96s                  \r\n     Running `qemu-system-riscv32 -nographic -machine sifive_u -kernel target\/riscv32imac-unknown-none-elf\/debug\/hello`\r\nHello from Rust!\r\n<\/code><\/pre>\n
                                  \u7121\u4e8b\u306b\u3001Hello from Rust!\u3068\u51fa\u529b\u3055\u308c\u305f\u3067\u3057\u3087\u3046\u304b\uff1f
                                  \nHello World\u3067\u304d\u305f\u65b9\u3001\u304a\u3081\u3067\u3068\u3046\u3054\u3056\u3044\u307e\u3059\uff01\u3082\u3046\u7acb\u6d3e\u306a\u30d9\u30a2\u30e1\u30bf\u30e9\u30fc\u3067\u3059\uff01
                                  \nqemu\u306f\u3001Ctrl+a x\u3067\u7d42\u4e86\u3067\u304d\u307e\u3059\u3002<\/p>\n
                                  \u3053\u3053\u304b\u3089\u306f\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306e\u4e2d\u8eab\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
                                  target machine sifive_u<\/h3>\n
                                  qemu-riscv\u3067\u306f\u30015\u3064\u306emachine\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
                                  $ qemu-system-riscv32 -nographic -machine help\r\nSupported machines are:\r\nnone                 empty machine\r\nsifive_e             RISC-V Board compatible with SiFive E SDK\r\nsifive_u             RISC-V Board compatible with SiFive U SDK\r\nspike_v1.10          RISC-V Spike Board (Privileged ISA v1.10) (default)\r\nspike_v1.9.1         RISC-V Spike Board (Privileged ISA v1.9.1)\r\nvirt                 RISC-V VirtIO Board (Privileged ISA v1.10)\r\n<\/code><\/pre>\n
                                  \u4eca\u56de\u306e\u7bc4\u56f2\u3067\u306f\u3001\u30bf\u30fc\u30b2\u30c3\u30c8machine\u306fvirt\u3067\u3082\u826f\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001sifive_u\u306b\u3057\u307e\u3059\u3002
                                  \nsifive\u3068\u306f\u3001\u73fe\u5728\u65e2\u306b\u4e16\u754c\u4e2d\u3067\u767a\u58f2\u3055\u308c\u3066\u3044\u308bRISC-V\u306e\u8a55\u4fa1\u30dc\u30fc\u30c9\u3067\u3059\u3002
                                  \n\u5b9f\u6a5f\u3092\u7528\u610f\u3059\u308c\u3070\u52d5\u3044\u305f\u65b9\u304c\u7d20\u6575\u3067\u3059\u3088\u306d\uff01<\/p>\n
                                  qemu-riscv sifive_u\u306e\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u306f\u4e0b\u8a18\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n
                                  static<\/span> const<\/span> struct<\/span> MemmapEntry<\/span> {<\/span>\r\n    hwaddr<\/span> base<\/span>;<\/span>\r\n    hwaddr<\/span> size<\/span>;<\/span>\r\n}<\/span> sifive_u_memmap<\/span>[]<\/span> =<\/span> {<\/span>\r\n    [<\/span>SIFIVE_U_DEBUG<\/span>]<\/span> =<\/span>    {<\/span>        0x0<\/span>,<\/span>      0x100<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_MROM<\/span>]<\/span> =<\/span>     {<\/span>     0x1000<\/span>,<\/span>    0x11000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_TEST<\/span>]<\/span> =<\/span>     {<\/span>   0x100000<\/span>,<\/span>     0x1000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_CLINT<\/span>]<\/span> =<\/span>    {<\/span>  0x2000000<\/span>,<\/span>    0x10000<\/span> },<\/span> \/* sifive_u *\/<\/span>\r\n    [<\/span>SIFIVE_U_CLIC<\/span>]<\/span> =<\/span>     {<\/span>  0x2000000<\/span>,<\/span>  0x1000000<\/span> },<\/span> \/* sifive_ux *\/<\/span>\r\n    [<\/span>SIFIVE_U_PLIC<\/span>]<\/span> =<\/span>     {<\/span>  0xc000000<\/span>,<\/span>  0x4000000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_UART0<\/span>]<\/span> =<\/span>    {<\/span> 0x10013000<\/span>,<\/span>     0x1000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_UART1<\/span>]<\/span> =<\/span>    {<\/span> 0x10023000<\/span>,<\/span>     0x1000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_DRAM<\/span>]<\/span> =<\/span>     {<\/span> 0x80000000<\/span>,<\/span>        0x0<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_GEM<\/span>]<\/span> =<\/span>      {<\/span> 0x100900FC<\/span>,<\/span>     0x2000<\/span> },<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
                                  hello world\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u306e\u306f\u3001UART\u3068DRAM\u3067\u3059\u3002UART\u306f\u3068\u308a\u3042\u3048\u305aUART0\u3092\u4f7f\u3044\u307e\u3059\u3002
                                  \n\u305d\u308c\u305e\u308c\u30010x10013000\u30680x80000000\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
                                  elf\u30d0\u30a4\u30ca\u30ea\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u304c0x80000000\u306b\u306a\u3063\u3066\u3044\u308c\u3070\u3001\u5f8c\u306f\u3001qemu\u304c\u3088\u304d\u306b\u8a08\u3089\u3063\u3066\u5b9f\u884c\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u8a73\u7d30\u306f\u5f8c\u7a0b\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
                                  UART\u306b\u306a\u3058\u307f\u304c\u306a\u3044\u65b9\u3082\u3044\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002
                                  \n\u96d1\u306a\u8aac\u660e\u3092\u3059\u308b\u3068\u3001UART\u30c7\u30d0\u30a4\u30b9\u304c\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u306b\u30c7\u30fc\u30bf\u3092\u30b9\u30c8\u30a2\u3059\u308b\u3068\u3001\u5bfe\u5411\u5074\u3067\u306f\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3057\u307e\u3059\u3002\u3053\u3061\u3089\u304c\u9001\u4fe1\u3059\u308b\u30c7\u30fc\u30bf\u304c\u30a2\u30b9\u30ad\u30fc\u30b3\u30fc\u30c9\u3067\u3042\u308c\u3070\u3001\u53d7\u4fe1\u5074\u3082\u30a2\u30b9\u30ad\u30fc\u30b3\u30fc\u30c9\u3067\u6587\u5b57\u3092\u53d7\u3051\u53d6\u308c\u308b\u308f\u3051\u3067\u3059\u3002
                                  \n\u4e0d\u601d\u8b70\u306b\u611f\u3058\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001UART\u306e\u9001\u4fe1\u7528\u30d0\u30c3\u30d5\u30a1\u304c\u3001\u3068\u3042\u308b\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9(0x100130000)\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u304a\u308a\u3001\u305d\u306e\u30a2\u30c9\u30ec\u30b9\u306b\u4e00\u6587\u5b57\u305a\u3064\u30c7\u30fc\u30bf\u3092\u9001\u308b\u3068\u3001\u30a8\u30df\u30e5\u30ec\u30fc\u30bf\u304c\u53d7\u4fe1\u3057\u305f\u6587\u5b57\u3092\u8868\u793a\u3057\u3066\u304f\u308c\u308b\u308f\u3051\u3067\u3059\u3002\u3053\u308c\u306f\u5b9f\u6a5f\u3067\u3082\u540c\u3058\u3067\u3059\u3002<\/p>\n
                                  hello world Rust\u306e\u5b9f\u88c5<\/h3>\n
                                  \u65e9\u901f\u3001\u4e16\u754c\u306b\u3053\u3093\u3061\u306f\u3057\u307e\u3057\u3087\u3046\u3002
                                  \n\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304b\u660e\u78ba\u306b\u3059\u308b\u305f\u3081\u306b\u30012\u30b9\u30c6\u30c3\u30d7\u3067\u4f5c\u6210\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
                                    \n
                                  1. \n
                                      Rust\u3067\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u3063\u3066\u3001riscv-toolchain\u3067\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3059\u308b<\/ol>\n<\/li>\n<\/ol>\n
                                       <\/p>\n
                                        cargo\u306ebuild script\u3092\u4f7f\u3063\u3066\u3001\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3059\u308b<\/ol>\n
                                        Rust\u3067\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u3063\u3066\u3001riscv-toolchain\u3067\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3059\u308b<\/h4>\n
                                        \u3067\u306f\u307e\u305a\u3001Rust\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092library\u5f62\u5f0f\u3067\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
                                        $ cargo new --lib hello\r\n     Created library `hello` project\r\n$ cd hello\r\n<\/code><\/pre>\n
                                        \u304a\u597d\u307f\u306e\u30a8\u30c7\u30a3\u30bf\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304d\u307e\u3059\u3002\u307e\u305a\u306f\u3001\u5fc5\u8981\u306a\u8a2d\u5b9a\u3092\u3057\u3066\u3057\u307e\u3044\u307e\u3057\u3087\u3046\u3002
                                        \nCargo.toml\u306b\u6b21\u306e\u8a2d\u5b9a\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n
                                        [lib]<\/span>\r\ncrate-type<\/span> =<\/span> [\"staticlib\"]<\/span>\r\n<\/code><\/pre>\n
                                        \u307e\u305a\u3001library\u3092static library\u306b\u3057\u3066\u304a\u304d\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002
                                        \n\u3055\u3066\u3001\u809d\u5fc3\u306eRust\u3092\u66f8\u304d\u307e\u3057\u3087\u3046\u3002src\/lib.rs\u306b\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
                                        \/\/ \u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u4f7f\u7528\u3057\u306a\u3044<\/span>\r\n#![no_std]<\/span>\r\n\r\n\/\/ mangle\u3057\u306a\u3044<\/span>\r\n#[no_mangle]<\/span>\r\npub<\/span> fn<\/span> __<\/span>start_rust<\/span>()<\/span> -><\/span> !<\/span> {<\/span>\r\n    \/\/ UART0\u306e\u9001\u4fe1\u30d0\u30c3\u30d5\u30a1\u306b1\u6587\u5b57\u305a\u3064\u30c7\u30fc\u30bf\u3092\u30b9\u30c8\u30a2\u3059\u308b<\/span>\r\n    let<\/span> uart0<\/span> =<\/span> 0x10013000<\/span>  as<\/span> *<\/span>mut<\/span> u8<\/span>;<\/span>\r\n    for<\/span> c<\/span> in<\/span> b<\/span>\"Hello from Rust!\"<\/span>.iter<\/span>()<\/span> {<\/span>\r\n        unsafe<\/span> {<\/span>\r\n            *<\/span>uart0<\/span> =<\/span> *<\/span>c<\/span> as<\/span> u8<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    loop<\/span> {}<\/span>\r\n}<\/span>\r\n\r\n\/\/ panic\u767a\u751f\u6642\u306e\u30cf\u30f3\u30c9\u30e9<\/span>\r\nuse<\/span> core<\/span>::<\/span>panic<\/span>::<\/span>PanicInfo<\/span>;<\/span>\r\n#[panic_handler]<\/span>\r\n#[no_mangle]<\/span>\r\npub<\/span> fn<\/span> panic<\/span>(<\/span>_<\/span>info<\/span>:<\/span> &<\/span>PanicInfo<\/span>)<\/span> -><\/span> !<\/span> {<\/span>\r\n    \/\/ \u4f55\u3082\u305b\u305a\u3001\u7121\u9650\u30eb\u30fc\u30d7\u3059\u308b<\/span>\r\n    loop<\/span>{}<\/span>\r\n}<\/span>\r\n\r\n\/\/ abort\u6642\u306e\u30cf\u30f3\u30c9\u30e9<\/span>\r\n#[no_mangle]<\/span>\r\npub<\/span> fn<\/span> abort<\/span>()<\/span> -><\/span> !<\/span> {<\/span>\r\n    \/\/ \u4f55\u3082\u305b\u305a\u3001\u7121\u9650\u30eb\u30fc\u30d7\u3059\u308b<\/span>\r\n    loop<\/span> {}<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                        sifive_u\u306eUART\u306f\u30010\u756a\u30ec\u30b8\u30b9\u30bf\u304cTX (\u9001\u4fe1\u7528)\u30ec\u30b8\u30b9\u30bf\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002
                                        \n\u305d\u306e\u305f\u3081\u3001UART0\u304c\u30de\u30c3\u30d4\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u30a2\u30c9\u30ec\u30b9 (0x1001_3000)\u306bascii\u30b3\u30fc\u30c9\u30921\u6587\u5b57\u305a\u3064\u9001\u4fe1\u3059\u308b\u3068\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u6587\u5b57\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002
                                        \n\u3082\u3046\u5c11\u3057\u771f\u9762\u76ee\u306b\u4f5c\u308b\u306e\u3067\u3042\u308c\u3070\u3001UART0\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30ec\u30b8\u30b9\u30bf\u3092\u898b\u3066\u3001TX\u30d0\u30c3\u30d5\u30a1\u304cFull\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u3068\u304d\u306e\u307f\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
                                        \u3055\u3042\uff01\u30c9\u30ad\u30c9\u30ad\u3057\u306a\u304c\u3089\u30d3\u30eb\u30c9\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n
                                        $ cargo build --target riscv32imac-unknown-none-elf\r\n<\/code><\/pre>\n
                                        –target riscv32imac-unknown-none-elf\u306f\u3001RISC-V\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u30af\u30ed\u30b9\u30d3\u30eb\u30c9\u3059\u308b\u305f\u3081\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u3002
                                        \ntarget\/riscv32imac-unknown-none-elf\/debug\/libhello.a\u304c\u7121\u4e8b\u3001\u751f\u6210\u3055\u308c\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002
                                        \n\u672c\u5f53\u306b\u3053\u3044\u3064\u306fRISC-V\u30d0\u30a4\u30ca\u30ea\u306a\u306e\u3067\u3057\u3087\u3046\u304b\uff1f
                                        \n\u4f55\u3084\u3089\u7c21\u5358\u3059\u304e\u3066\u602a\u3057\u3044\u3067\u3059\u3002
                                        \n\u8efd\u3044\u6c17\u6301\u3061\u3067\u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
                                        $ riscv32-unknown-linux-gnu-objdump -D target\/riscv32imac-unknown-none-elf\/debug\/libhello.a | less\r\n...\r\nDisassembly of section .text.__start_rust:\r\n\r\n00000000 <__start_rust>:\r\n   0:   7139                    addi    sp,sp,-64\r\n   2:   de06                    sw      ra,60(sp)\r\n   4:   10000537                lui     a0,0x10000\r\n   8:   c62a                    sw      a0,12(sp)\r\n   a:   00000537                lui     a0,0x0\r\n   e:   00052583                lw      a1,0(a0) # 0 <__start_rust>\r\n  12:   00050513                mv      a0,a0\r\n  16:   4148                    lw      a0,4(a0)\r\n  18:   c42a                    sw      a0,8(sp)\r\n  1a:   852e                    mv      a0,a1\r\n  1c:   45a2                    lw      a1,8(sp)\r\n  1e:   00000097                auipc   ra,0x0\r\n<\/code><\/pre>\n
                                        __start_rust\u304c\u3042\u308a\u307e\u3059\u306d\u3002\u305d\u3057\u3066RISC-V\u306b\u7279\u5fb4\u7684\u306a\u547d\u4ee4\u3067\u3042\u308bauipc\u547d\u4ee4\u304c\u3042\u308a\u307e\u3059\u3002
                                        \n\u3053\u308c\u306f\u3069\u3046\u3084\u3089RISC-V\u306e\u30d0\u30a4\u30ca\u30ea\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n
                                        \u3061\u306a\u307f\u306b\u300132 bit\u306816 bit\u306e\u547d\u4ee4\u304c\u6df7\u5728\u3057\u3066\u3044\u307e\u3059\u3002
                                        \nRISC-V\u3067\u306f\u300116 bit\u3067\u547d\u4ee4\u3092\u8868\u73fe\u3059\u308bCompressed\u547d\u4ee4\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u304a\u308a\u3001Rust\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u3082Compressed\u547d\u4ee4\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002
                                        \n\u305d\u306e\u305f\u3081\u3001\u53ef\u80fd\u306a\u7bc4\u56f2\u306716 bit\u547d\u4ee4\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
                                        \u3053\u308c\u3067\u3001libhello.a\u3068\u3044\u3046\u3001Rust\u304b\u3089\u751f\u6210\u3055\u308c\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002
                                        \n\u305f\u3060\u3057\u3001\u307e\u3060\u5b9f\u884c\u3067\u304d\u307e\u305b\u3093\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u306esifive_u\u3067\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u304c0x80000000\u304b\u3089\u59cb\u307e\u3063\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002
                                        \nboot strap\u3068\u30ea\u30f3\u30ab\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u66f8\u3044\u3066\u3001\u30ea\u30f3\u30af\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
                                        hello world boot strap<\/h3>\n
                                        \u307e\u305a\u306fboot strap\u3067\u3059\u3002
                                        \n\u5c11\u3057\u3054\u3061\u3083\u3054\u3061\u3083\u3068\u3042\u308a\u307e\u3059\u304c\u3001\u91cd\u8981\u306a\u306e\u306f\u3001_start\u304b\u3089\u59cb\u307e\u308b3\u547d\u4ee4\u3067\u3059\u3002<\/p>\n
                                        .option norvc\r\n\/\/ .boot\u30bb\u30af\u30b7\u30e7\u30f3\r\n.section .boot, \"ax\",@progbits\r\n.global _start\r\n.global abort\r\n\r\n_start:\r\n    \/* Set up stack pointer. *\/\r\n    lui     sp, %hi(stacks + 1024)\r\n    ori     sp, sp, %lo(stacks + 1024)\r\n    \/* Now jump to the rust world; __start_rust.  *\/\r\n    j       __start_rust\r\n\r\n.bss\r\n\r\n.global stacks\r\nstacks:\r\n    .skip 1024\r\n<\/code><\/pre>\n
                                        sp\u306f\u30b9\u30bf\u30c3\u30af\u30dd\u30a4\u30f3\u30bf\u3067\u3059\u3002\u3068\u308a\u3042\u3048\u305a\u306f\u30011KB \u3042\u308c\u3070\u5341\u5206\u306a\u306e\u3067\u3001stack\u30e9\u30d9\u30eb\u304b\u30891KB\u306e\u7a7a\u9593\u3092\u78ba\u4fdd\u3057\u3066\u304a\u304d\u307e\u3059\u3002
                                        \n\u30b9\u30bf\u30c3\u30af\u9818\u57df\u306f\u3001\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u306e\u4e0b\u4f4d\u304b\u3089\u4e0a\u4f4d\u3078\u3068\u4f38\u3073\u3066\u3044\u304f\u305f\u3081\u3001stack + 1024\u3092\u30b9\u30bf\u30c3\u30af\u30dd\u30a4\u30f3\u30bf\u306e\u521d\u671f\u5024\u3068\u3057\u307e\u3059\u3002<\/p>\n
                                        \u30b9\u30bf\u30c3\u30af\u9818\u57df\u3068\u306f\u3001\u95a2\u6570\u306e\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306a\u3069\u3092\u683c\u7d0d\u3059\u308b\u305f\u3081\u306e\u30e1\u30e2\u30ea\u9818\u57df\u3067\u3059\u3002
                                        \nRust\u3067\u95a2\u6570\u5185\u306b\u5909\u6570\u3092\u4f5c\u308b\u3068\u3001\u30b9\u30bf\u30c3\u30af\u9818\u57df\u306e\u30e1\u30e2\u30ea\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u4eca\u56de\u306fHello World\u3059\u308b\u3060\u3051\u306a\u306e\u3067\u30011KB\u3082\u3042\u308c\u3070\u5341\u5206\u4e8b\u8db3\u308a\u307e\u3059\u3002<\/p>\n
                                        hello world \u30ea\u30f3\u30ab\u30b9\u30af\u30ea\u30d7\u30c8<\/h3>\n
                                        \u6b21\u306b\u30ea\u30f3\u30ab\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u3059\u3002\u898b\u6163\u308c\u3066\u3044\u306a\u3044\u65b9\u306f\u30c4\u30e9\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u3068\u308a\u3042\u3048\u305a\u3053\u3046\u3044\u3046\u3082\u306e\u3001\u3068\u3044\u3046\u3053\u3068\u3067\u898b\u3066\u307f\u3066\u4e0b\u3055\u3044\u3002\u3061\u3083\u3093\u3068\u7406\u89e3\u3057\u305f\u3044\u65b9\u306f\u3001\u30ea\u30f3\u30ab\u30fb\u30ed\u30fc\u30c0\u5b9f\u8df5\u958b\u767a\u30c6\u30af\u30cb\u30c3\u30af\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n
                                        \u3067\u306f\u3001\u30ea\u30f3\u30ab\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u5c11\u3057\u9577\u3044\u3067\u3059\u304c\u3001\u91cd\u8981\u306a\u90e8\u5206\u306f\u5c11\u306a\u3044\u3067\u3059\u3002<\/p>\n
                                        OUTPUT_ARCH(\"riscv\")\r\n\r\n\/\/ \u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u3092\u30a2\u30bb\u30f3\u30d6\u30ea\u3067\u66f8\u3044\u305f`_start`\u306b\u8a2d\u5b9a\u3059\u308b\r\nENTRY(_start)\r\n\r\nSECTIONS\r\n{\r\n    \/* sifive_u\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u30a2\u30c9\u30ec\u30b9 *\/\r\n    . = 0x80000000;\r\n\r\n    \/* text: Program code section *\/\r\n    .text :\r\n    {\r\n        \/* \u3053\u308c\u30670x80000000\u306b.boot\u30bb\u30af\u30b7\u30e7\u30f3\u304c\u914d\u7f6e\u3055\u308c\u308b *\/\r\n        *(.boot)\r\n        *(.text .text.*)\r\n    }\r\n\r\n    \/* rodata: Read-only data *\/\r\n    .rodata :\r\n    {\r\n        *(.rdata .rodata .rodata.*)\r\n    }\r\n\r\n    \/* data: Writable data *\/\r\n    .data :\r\n    {\r\n        *(.data .data.*)\r\n    }\r\n\r\n    .bss :\r\n    {\r\n        *(.bss bss.*)\r\n    }\r\n}\r\n<\/code><\/pre>\n
                                        SECTIONS\u306e\u306f\u3058\u3081\u30920x80000000\u304b\u3089\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002
                                        \n\u305d\u3057\u3066\u30010x80000000\u306b.boot\u30bb\u30af\u30b7\u30e7\u30f3(\u4e0a\u3067\u66f8\u3044\u305f\u30a2\u30bb\u30f3\u30d6\u30ea\u306eboot strap)\u304c\u7f6e\u304b\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n
                                        \u6e80\u3092\u6301\u3057\u3066hello world!<\/h3>\n
                                        Rust\u3067\u4f5c\u6210\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea(libhello.a)\u3068\u3001\u30d6\u30fc\u30c8\u30b9\u30c8\u30e9\u30c3\u30d7(boot.s)\u3092\u7528\u3044\u3066\u3001\u30ea\u30f3\u30ab\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u30ea\u30f3\u30af\u3057\u3066\u3001\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/p>\n
                                        $ riscv32-unknown-linux-gnu-gcc -T linker.ld boot.s target\/riscv32imac-unknown-none-elf\/debug\/libhello.a -o hello -mabi=ilp32 -nostdlib\r\n<\/code><\/pre>\n
                                        qemu\u3067\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
                                        $ qemu-system-riscv32 -nographic -machine sifive_u -kernel hello\r\nHello from Rust!\r\n<\/code><\/pre>\n
                                        \u3084\u308a\u307e\u3057\u305f\uff01
                                        \n\u591c\u306e\u4f4f\u4eba\u306b\u306a\u3089\u305a(nightly\u30b3\u30f3\u30d1\u30a4\u30e9\u3092\u4f7f\u308f\u305a)\u3001Rust\u3067RISC-V\u306e\u30d9\u30a2\u30e1\u30bf\u30eb\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u304c\u3067\u304d\u307e\u3057\u305f\uff01<\/p>\n
                                        qemu\u304c\u7d42\u4e86\u3067\u304d\u306a\u304f\u3066\u56f0\u3063\u3066\u3044\u308b\u3042\u306a\u305f\u3001Ctrl+a x\u3092\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
                                        \u5c11\u3057\u3001\u30b3\u30de\u30f3\u30c9\u3092\u89e3\u8aac\u3057\u3066\u304a\u304d\u307e\u3059\u3002
                                        \nriscv-toolchain\u306egcc\u3092\u4f7f\u3044\u3001boot.s\u3068libhello.a\u304b\u3089hello\u30d0\u30a4\u30ca\u30ea\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002
                                        \n\u305d\u306e\u969b\u3001\u30ea\u30f3\u30ab\u30b9\u30af\u30ea\u30d7\u30c8\u306b\u306flinker.ld\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002
                                        \n\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3001mabi=ilp32\u3068-nostdlib\u306f\u5fc5\u9808\u3067\u3059\u3002<\/p>\n
                                        mabi=ilp32\u306f\u3001ABI\u3092\u6c7a\u5b9a\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u6574\u6570\u6f14\u7b97\u3057\u304b\u6301\u305f\u306a\u304432bit\u547d\u4ee4\u30bb\u30c3\u30c8\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002
                                        \n\u6d6e\u52d5\u5c0f\u6570\u70b9\u304c\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u30ec\u30b8\u30b9\u30bf\u3092\u5229\u7528\u3057\u305fABI\u306b\u306a\u308b\u305f\u3081\u300132 bit\u6574\u6570\u3068\u306f\u7570\u306a\u308bABI\u306b\u306a\u308a\u307e\u3059\u3002\u6d6e\u52d5\u5c0f\u6570\u70b9\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u5834\u5408\u3001mabi=ilp32d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
                                        j __start_rust\u547d\u4ee4\u304c\u30ea\u30f3\u30af\u3055\u308c\u305f\u7d50\u679c\u3001j 0x80000010\u306b\u5909\u63db\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002
                                        \n0x80000010\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u898b\u308b\u3068\u3001__start_rust\u306e\u958b\u59cb\u5730\u70b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
                                        hello:     file format elf32-littleriscv\r\n\r\n\r\nDisassembly of section .text:\r\n\r\n80000000 <_start>:\r\n80000000:       80000137                lui     sp,0x80000\r\n80000004:       73416113                ori     sp,sp,1844\r\n80000008:       0080006f                j       80000010 <__start_rust>\r\n\r\n8000000c <abort>:\r\n8000000c:       0000006f                j       8000000c <abort>\r\n\r\n80000010 <__start_rust>:\r\n80000010:       7139                    addi    sp,sp,-64\r\n80000012:       de06                    sw      ra,60(sp)\r\n80000014:       10013537                lui     a0,0x10013\r\n80000018:       c62a                    sw      a0,12(sp)\r\n8000001a:       80000537                lui     a0,0x80000\r\n8000001e:       32c52583                lw      a1,812(a0) # 8000032c <_bss_start+0xfffffff8>\r\n80000022:       32c50513                addi    a0,a0,812\r\n<\/code><\/pre>\n
                                        cargo\u306ebuild script\u3092\u4f7f\u3063\u3066\u3001\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3059\u308b<\/h4>\n
                                        \u3055\u3066\u3001\u7686\u69d8\u3001\u305b\u3063\u304b\u304fcargo\u3068\u3044\u3046\u7d20\u6674\u3089\u3057\u3044\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u304c\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u6700\u7d42\u7684\u306a\u30d0\u30a4\u30ca\u30ea\u751f\u6210\u306briscv-toolchain\u3092\u76f4\u53e9\u304d\u3057\u3066\u3044\u308b\u306e\u3001\u6094\u3057\u304f\u3042\u308a\u307e\u305b\u3093\uff1f
                                        \n\u305d\u3053\u3067\uff01cargo run\u3067RISC-V\u5411\u3051\u306e\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3057\u305f\u4e0a\u3067\u3001qemu\u3067\u5b9f\u884c\u3059\u308b\u3068\u3053\u308d\u307e\u3067\u4e00\u6c17\u306b\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002
                                        \n\u307e\u305a\u306f\u3001Rust\u3067\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u751f\u6210\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
                                        \u624b\u9806\u306e\u7c21\u5358\u5316\u306e\u305f\u3081\u3001\u3053\u308c\u307e\u3067\u4f5c\u3063\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5909\u66f4\u3057\u307e\u3059\u3002\u5225\u9014\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u3063\u3066\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3068\u7d50\u5408\u3059\u308b\u65b9\u6cd5\u306e\u65b9\u304c\u3001\u672c\u5f53\u306f\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
                                        $ mv src\/lib.rs src\/main.rs\r\n<\/code><\/pre>\n
                                        cargo\u306b\u8a2d\u5b9a\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002.cargo\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3001.cargo\/config\u30d5\u30a1\u30a4\u30eb\u3092\u4e0b\u8a18\u306e\u901a\u308a\u3001\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
                                        [target.riscv32imac-unknown-none-elf]<\/span>\r\nrunner<\/span> =<\/span> \"qemu-system-riscv32 -nographic -machine sifive_u -kernel\"<\/span>\r\nrustflags<\/span> =<\/span> [<\/span>\r\n  \"-C\"<\/span>,<\/span> \"link-arg=-Tlinker.ld\"<\/span>,<\/span>\r\n]<\/span>\r\n\r\n[build]<\/span>\r\ntarget<\/span> =<\/span> \"riscv32imac-unknown-none-elf\"<\/span>\r\n<\/code><\/pre>\n
                                        \u3053\u308c\u3067\u3001\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3059\u308b\u969b\u306b\u3001\u30ea\u30f3\u30ab\u30b9\u30af\u30ea\u30d7\u30c8\u3068\u3057\u3066\u3001linker.ld\u304c\u4f7f\u308f\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002
                                        \nbuild target\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001cargo build\u3092\u5b9f\u884c\u3059\u308b\u3060\u3051\u3067\u3001RISC-V\u306e\u30d0\u30a4\u30ca\u30ea\u304c\u751f\u6210\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002
                                        \nrunner\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001cargo run\u3068\u3057\u305f\u3068\u304d\u306b\u3001qemu\u3092\u6307\u5b9a\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u547c\u3073\u51fa\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n
                                        \u6b21\u306b\u3001build script\u3092\u4f5c\u6210\u3057\u3066\u3044\u304d\u307e\u3059\u3002
                                        \nbuild script\u306f\u3001cargo build\u6642\u306b\u5b9f\u884c\u3055\u308c\u308b\u3082\u306e\u3067\u3001\u3053\u308c\u3082Rust\u3067\u8a18\u8ff0\u3057\u307e\u3059\u3002
                                        \nbuild script\u3067cc\u3068\u3044\u3046crate\u3092\u4f7f\u3044\u3057\u307e\u3059\u3002\u305d\u3053\u3067\u3001Cargo.toml\u306b\u6b21\u306e\u8a2d\u5b9a\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n
                                        [build-dependencies]<\/span>\r\ncc<\/span> =<\/span> \"1.0.25\"<\/span>\r\n<\/code><\/pre>\n
                                        cc crate\u306f\u3001cargo build\u5b9f\u884c\u6642\u306b\u3001C\u3084C++\u306e\u4f9d\u5b58\u30d5\u30a1\u30a4\u30eb\u3092\u30d3\u30eb\u30c9\u3059\u308b\u305f\u3081\u306ecrate\u3067\u3059\u3002
                                        \nbuild.rs\u30d5\u30a1\u30a4\u30eb\u3092\u4e0b\u8a18\u306e\u5185\u5bb9\u3067\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
                                        extern<\/span> crate<\/span> cc<\/span>;<\/span>\r\n\r\nuse<\/span> std<\/span>::<\/span>error<\/span>::<\/span>Error<\/span>;<\/span>\r\nuse<\/span> cc<\/span>::<\/span>Build<\/span>;<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> -><\/span> Result<\/span><<\/span>(),<\/span> Box<\/span><<\/span>Error<\/span>>><\/span> {<\/span>\r\n    \/\/ assemble the `boot.s` file<\/span>\r\n    Build<\/span>::<\/span>new<\/span>()<\/span>\r\n        .file<\/span>(<\/span>\"boot.s\"<\/span>)<\/span>\r\n        .flag<\/span>(<\/span>\"-mabi=ilp32\"<\/span>)<\/span>\r\n        .compile<\/span>(<\/span>\"asm\"<\/span>);<\/span>\r\n\r\n    Ok<\/span>(())<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                        \u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001Rust\u30b3\u30fc\u30c9\u304c\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u308b\u524d\u306b\u3001boot.s\u304c\u30a2\u30bb\u30f3\u30d6\u30eb\u3055\u308c\u3001libasm.a\u3068\u3044\u3046\u30a2\u30fc\u30ab\u30a4\u30d6\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002
                                        \nRust\u30b3\u30fc\u30c9\u306e\u30d3\u30eb\u30c9\u3067\u306f\u3001\u3053\u306elibasm.a\u3082\u30ea\u30f3\u30af\u3055\u308c\u307e\u3059\u3002<\/p>\n
                                        \u3067\u306f\u3001cargo run\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
                                        $ env CC=riscv32-unknown-linux-gnu-gcc  cargo run\r\n   Compiling hello v0.1.0 (\/home\/tomoyuki\/work\/04.RISCV\/riscv-rust-hello)\r\n    Finished dev [unoptimized + debuginfo] target(s) in 1.69s\r\n     Running `qemu-system-riscv32 -nographic -machine sifive_u -kernel target\/riscv32imac-unknown-none-elf\/debug\/hello`\r\nHello from Rust!\r\n<\/code><\/pre>\n
                                        \u7121\u4e8b\u3001\u30d3\u30eb\u30c9\u304c\u5b9f\u884c\u3055\u308c\u3001qemu\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002
                                        \ncc crate\u306f\u3001\u30af\u30ed\u30b9\u30d3\u30eb\u30c9\u30c4\u30fc\u30eb\u306e\u6307\u5b9a\u306b\u5236\u9650\u304c\u3042\u308b\u305f\u3081\u3001\u74b0\u5883\u5909\u6570\u3067$CC\u306b\u30af\u30ed\u30b9\u30d3\u30eb\u30c9\u30c4\u30fc\u30eb\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
                                        TIPS<\/h2>\n
                                        binutils<\/h3>\n
                                        cargo\u7d4c\u7531\u3067binutils\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                                        $ cargo install cargo-binutils\r\n$ rustup component add llvm-tools-preview\r\n<\/code><\/pre>\n
                                        cargo objdump\u3067\u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
                                        $ cargo objdump --bin hello -- -d -no-show-raw-insn\r\n    Finished dev [unoptimized + debuginfo] target(s) in 0.02s\r\n\r\nhello:  file format ELF32-riscv\r\n\r\nDisassembly of section .reset:\r\n_start:\r\n80000000:       lui     sp, 524288\r\n<\/code><\/pre>\n
                                        \u3055\u3089\u306b\u8a73\u3057\u3044\u4f7f\u3044\u65b9\u3092\u77e5\u308a\u305f\u3044\u5834\u5408\u306f\u3001help\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002
                                        \n\u57fa\u672c\u7684\u306b\u306f\u3001llvm-objdump\u306e\u4f7f\u3044\u65b9\u3068\u540c\u3058\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
                                        $ cargo objdump --help\r\ncargo-objdump 0.1.4\r\nProxy for the `llvm-objdump` tool shipped with the Rust toolchain.\r\n\r\nUSAGE:\r\n    cargo-objdump [FLAGS] [OPTIONS] [--] [args]...\r\n...\r\n<\/code><\/pre>\n
                                        riscv-toolchain\u306a\u3057\u3067\u30d3\u30eb\u30c9\u3059\u308b<\/h3>\n
                                        nightly\u9650\u5b9a\u3067\u3059\u304c\u3001Rust\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u5185\u306b\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
                                        \n\u3053\u308c\u306b\u3088\u308a\u3001\u5916\u90e8\u30d5\u30a1\u30a4\u30eb\u306b\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u66f8\u304f\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u3001riscv-toolchain\u306a\u3057\u3067RISC-V\u306e\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n
                                        \/\/ nightly\u9650\u5b9a\u306e\u6a5f\u80fd`global_asm`<\/span>\r\n#![feature(global_asm)]<\/span>\r\n#![no_std]<\/span>\r\n#![no_main]<\/span>\r\n\r\n#[no_mangle]<\/span>\r\npub<\/span> extern<\/span> \"C\"<\/span> fn<\/span> __<\/span>start_rust<\/span>()<\/span> -><\/span> !<\/span> {<\/span>\r\n    let<\/span> uart<\/span> =<\/span> 0x1001_3000<\/span>  as<\/span> *<\/span>mut<\/span> u8<\/span>;<\/span>\r\n    for<\/span> c<\/span> in<\/span> b<\/span>\"Hello from Rust!\"<\/span>.iter<\/span>()<\/span> {<\/span>\r\n        unsafe<\/span> {<\/span>\r\n            *<\/span>uart<\/span> =<\/span> *<\/span>c<\/span> as<\/span> u8<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    loop<\/span>{}<\/span>\r\n}<\/span>\r\n\r\nuse<\/span> core<\/span>::<\/span>panic<\/span>::<\/span>PanicInfo<\/span>;<\/span>\r\n#[panic_handler]<\/span>\r\n#[no_mangle]<\/span>\r\npub<\/span> fn<\/span> panic<\/span>(<\/span>_<\/span>info<\/span>:<\/span> &<\/span>PanicInfo<\/span>)<\/span> -><\/span> !<\/span> {<\/span>\r\n    loop<\/span>{}<\/span>\r\n}<\/span>\r\n\r\n#[no_mangle]<\/span>\r\npub<\/span> extern<\/span> \"C\"<\/span> fn<\/span> abort<\/span>()<\/span> -><\/span> !<\/span> {<\/span>\r\n    loop<\/span>{}<\/span>\r\n}<\/span>\r\n\r\n#[cfg(target_arch<\/span> =<\/span> \"riscv32\"<\/span>)]<\/span>\r\n#[link_section<\/span> =<\/span> \".boot\"<\/span>]<\/span>\r\nglobal_asm!<\/span>(<\/span>r#\"\r\n_start:\r\n    \/* Set up stack pointer. *\/\r\n    lui     sp, %hi(stack_end)\r\n    ori     sp, sp, %lo(stack_end)\r\n\r\n    \/* Now jump to the rust world; __start_rust.  *\/\r\n    j       __start_rust\r\n\r\n.bss\r\n\r\nstack_start:\r\n    .skip 1024\r\nstack_end:\r\n\"#<\/span>);<\/span>\r\n<\/code><\/pre>\n
                                        \u306f\u3044\u3001\u304a\u3082\u3080\u308d\u306b\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
                                        \n#[link_section]\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u3067\u914d\u7f6e\u3059\u308b\u30bb\u30af\u30b7\u30e7\u30f3\u3082\u6307\u5b9a\u3067\u304d\u308b\u306e\u3067\u3001\u3084\u308a\u305f\u3044\u653e\u984c\u3067\u3059\u3002<\/p>\n
                                        \u3053\u306e\u3088\u3046\u306b\u3059\u308b\u3068\u3001build script\u306a\u3057\u3067\u3082<\/p>\n
                                        $ cargo run\r\n<\/code><\/pre>\n
                                        \u3067\u3001\u4e00\u6c17\u306bRISC-V\u306e\u30d0\u30a4\u30ca\u30ea\u304c\u751f\u6210\u3067\u304d\u307e\u3059\u3002
                                        \nstable\u3067\u306f\u5fc5\u8981\u3060\u3063\u305f\u3001\u74b0\u5883\u5909\u6570CC\u306e\u6307\u5b9a\u3082\u4e0d\u8981\u3067\u3059\u3002(build script\u306e\u4e2d\u3067cc crate\u3092\u4f7f\u7528\u3057\u306a\u3044\u305f\u3081)<\/p>\n
                                        \u3084\u306f\u308a\u30a4\u30f3\u30e9\u30a4\u30f3\u30a2\u30bb\u30f3\u30d6\u30e9\u4f7f\u3044\u305f\u304f\u306a\u308b\u306e\u3067\u3001nightly\u306f\u6a5f\u80fd\u304c\u4e0d\u5b89\u5b9a\u3067\u3042\u308b\u3001\u3068\u3044\u3046\u8a8d\u8b58\u3092\u6301\u3063\u305f\u3046\u3048\u3067\u4fbf\u5229\u306b\u4f7f\u7528\u3059\u308c\u3070\u826f\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
                                        bootloader<\/h3>\n
                                        sifive_u\u306e\u30e1\u30e2\u30ea\u30de\u30c3\u30d7\u3092\u518d\u63b2\u8f09\u3057\u307e\u3059\u3002<\/p>\n
                                        static<\/span> const<\/span> struct<\/span> MemmapEntry<\/span> {<\/span>\r\n    hwaddr<\/span> base<\/span>;<\/span>\r\n    hwaddr<\/span> size<\/span>;<\/span>\r\n}<\/span> sifive_u_memmap<\/span>[]<\/span> =<\/span> {<\/span>\r\n    [<\/span>SIFIVE_U_DEBUG<\/span>]<\/span> =<\/span>    {<\/span>        0x0<\/span>,<\/span>      0x100<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_MROM<\/span>]<\/span> =<\/span>     {<\/span>     0x1000<\/span>,<\/span>    0x11000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_TEST<\/span>]<\/span> =<\/span>     {<\/span>   0x100000<\/span>,<\/span>     0x1000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_CLINT<\/span>]<\/span> =<\/span>    {<\/span>  0x2000000<\/span>,<\/span>    0x10000<\/span> },<\/span> \/* sifive_u *\/<\/span>\r\n    [<\/span>SIFIVE_U_CLIC<\/span>]<\/span> =<\/span>     {<\/span>  0x2000000<\/span>,<\/span>  0x1000000<\/span> },<\/span> \/* sifive_ux *\/<\/span>\r\n    [<\/span>SIFIVE_U_PLIC<\/span>]<\/span> =<\/span>     {<\/span>  0xc000000<\/span>,<\/span>  0x4000000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_UART0<\/span>]<\/span> =<\/span>    {<\/span> 0x10013000<\/span>,<\/span>     0x1000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_UART1<\/span>]<\/span> =<\/span>    {<\/span> 0x10023000<\/span>,<\/span>     0x1000<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_DRAM<\/span>]<\/span> =<\/span>     {<\/span> 0x80000000<\/span>,<\/span>        0x0<\/span> },<\/span>\r\n    [<\/span>SIFIVE_U_GEM<\/span>]<\/span> =<\/span>      {<\/span> 0x100900FC<\/span>,<\/span>     0x2000<\/span> },<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
                                        \u30a2\u30c9\u30ec\u30b9\u30de\u30c3\u30d7\u3092\u898b\u308b\u3068\u3001sifive_u\u306e0x1000\u304b\u308968KB\u5206ROM\u9818\u57df\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002
                                        \nqemu\u306e\u5b9f\u88c5\u3092\u898b\u3066\u307f\u308b\u3068\u3001\u30ea\u30bb\u30c3\u30c8\u76f4\u5f8c\u306f\u30010x1000\u304b\u3089\u30d6\u30fc\u30c8\u3057\u3001RAM\u9818\u57df\u306e0x8000_0000\u3078\u30b8\u30e3\u30f3\u30d7\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u30d6\u30fc\u30c8\u30b9\u30c8\u30e9\u30c3\u30d7\u304c\u7f6e\u304b\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u306d\u3002
                                        \n\u3053\u3053\u3092\u7f6e\u304d\u63db\u3048\u308c\u3070\u3001\u81ea\u4f5c\u30d6\u30fc\u30c8\u30ed\u30fc\u30c0\u30fc\u3067\u30d6\u30fc\u30c8\u3067\u304d\u305d\u3046\u3067\u3059\u3002
                                        \n\u73fe\u5728\u8abf\u67fb\u4e2d\u3067\u3059\u304c\u3001\u6539\u9020\u306a\u3057\u3067\u306f\u3001\u30d6\u30fc\u30c8\u30ed\u30fc\u30c0\u30fc\u3092\u7f6e\u304d\u63db\u3048\u3067\u304d\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n
                                        sifive_u.c\u3092\u307f\u308b\u3068\u3001\u30ea\u30bb\u30c3\u30c8\u30d9\u30af\u30bf\u304c\u3079\u3063\u305f\u308a\u3068\u30cf\u30fc\u30c9\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
                                            \/* reset vector *\/<\/span>\r\n    uint32_t<\/span> reset_vec<\/span>[<\/span>8<\/span>]<\/span> =<\/span> {<\/span>\r\n        0x00000297<\/span>,<\/span>                    \/* 1:  auipc  t0, %pcrel_hi(dtb) *\/<\/span>\r\n        0x02028593<\/span>,<\/span>                    \/*     addi   a1, t0, %pcrel_lo(1b) *\/<\/span>\r\n        0xf1402573<\/span>,<\/span>                    \/*     csrr   a0, mhartid  *\/<\/span>\r\n#if defined(TARGET_RISCV32)\r\n<\/span>        0x0182a283<\/span>,<\/span>                    \/*     lw     t0, 24(t0) *\/<\/span>\r\n#elif defined(TARGET_RISCV64)\r\n<\/span>        0x0182b283<\/span>,<\/span>                    \/*     ld     t0, 24(t0) *\/<\/span>\r\n#endif\r\n<\/span>        0x00028067<\/span>,<\/span>                    \/*     jr     t0 *\/<\/span>\r\n        0x00000000<\/span>,<\/span>\r\n        memmap<\/span>[<\/span>SIFIVE_U_DRAM<\/span>].<\/span>base<\/span>,<\/span> \/* start: .dword DRAM_BASE *\/<\/span>\r\n        0x00000000<\/span>,<\/span>\r\n                                       \/* dtb: *\/<\/span>\r\n    };<\/span>\r\n<\/code><\/pre>\n
                                        \u3061\u306a\u307f\u306b\u3001\u3053\u306e\u30ea\u30bb\u30c3\u30c8\u30d9\u30af\u30bf\u306e\u5f8c\u306b\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u30c4\u30ea\u30fc\u306eblob\u304c\u304f\u3063\u3064\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002
                                        \nLinux\u7acb\u3061\u4e0a\u3052\u305f\u3044\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u305d\u306e\u3042\u305f\u308a\u306f\u3069\u3046\u3067\u3082\u3044\u3044\u306e\u3067\u3001\u4e0a\u66f8\u304d\u3057\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002
                                        \n\u3057\u304b\u3057\u3001\u30ea\u30f3\u30ab\u30b9\u30af\u30ea\u30d7\u30c8\u30670x1000\u306b\u547d\u4ee4\u3092\u914d\u7f6e\u3059\u308b\u3068\u3001qemu\u5b9f\u884c\u6642\u306brom\u306e\u30ea\u30bb\u30c3\u30c8\u5931\u6557\u3067\u6012\u3089\u308c\u307e\u3059\u3002<\/p>\n
                                        $ \/opt\/riscv-qemu\/bin\/qemu-system-riscv32 -nographic -S -machine sifive_u -kernel target\/riscv32imac-unknown-none-elf\/debug\/rvos-rs\r\nrom: requested regions overlap (rom mrom.reset. free=0x0000000000001378, addr=0x0000000000001000)\r\nqemu-system-riscv32: rom check and register reset failed\r\n<\/code><\/pre>\n
                                        qemu\u3067Flash\u9818\u57df\u306b\u66f8\u304d\u8fbc\u307f\u3067\u304d\u308bmachine\u3082\u3042\u308b\u306e\u3067 (ARM\u306elm3s6965evb\u3068\u304b)\u3001\u305d\u306e\u3042\u305f\u308a\u306e\u5b9f\u88c5\u3068\u898b\u6bd4\u3079\u306a\u304c\u3089\u3001RAM\u9818\u57df\u3078\u306ekernel\u5c55\u958b\u304f\u3089\u3044\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u304d\u305f\u3044\u3067\u3059\u306d\u3002<\/p>\n
                                        \u53c2\u8003<\/h2>\n
                                        RISC-V\u3067\u52d5\u4f5c\u3059\u308bOS<\/h3>\n
                                          \n
                                        • \n
                                            nuttx<\/ul>\n<\/li>\n<\/ul>\n
                                             <\/p>\n
                                              zephyr<\/ul>\n
                                              RISC-V bare-metal<\/h3>\n
                                                \n
                                              • \n
                                                  riscv-rt<\/ul>\n<\/li>\n<\/ul>\n
                                                   <\/p>\n
                                                    riscv-probe<\/ul>\n
                                                    Rust OS<\/h3>\n
                                                      \n
                                                    • \n
                                                        Redox<\/ul>\n<\/li>\n<\/ul>\n
                                                         <\/p>\n
                                                          BlogOS<\/ul>\n
                                                          Rust Embedded<\/h3>\n
                                                            \n
                                                          • \n
                                                              The Embedded Rust Book<\/ul>\n<\/li>\n<\/ul>\n
                                                               <\/p>\n
                                                                The Embedonomicon<\/ul>\n","protected":false},"excerpt":{"rendered":"
                                                                Rust\u3067RISC-V OS\u81ea\u4f5c\uff01\u306f\u3058\u3081\u306e\u4e00\u6b69 \u3053\u306e\u8a18\u4e8b\u306f\u81ea\u4f5cOS Advent Calendar 2018\u306e […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45393","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\/45393-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"Rust\u3067RISC-V OS\u81ea\u4f5c\uff01\u306f\u3058\u3081\u306e\u4e00\u6b69 \u3053\u306e\u8a18\u4e8b\u306f\u81ea\u4f5cOS Advent Calendar 2018\u306e […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45393-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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