init

.gitignore

@@ -0,0 +1 @@
+/target

.vscode/launch.json

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+{
+    // IntelliSense を使用して利用可能な属性を学べます。
+    // 既存の属性の説明をホバーして表示します。
+    // 詳細情報は次を確認してください: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug executable 'elf-parser'",
+            "cargo": {
+                "args": [
+                    "build",
+                    "--bin=elf-parser",
+                    "--package=elf-parser"
+                ],
+                "filter": {
+                    "name": "elf-parser",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug unit tests in executable 'elf-parser'",
+            "cargo": {
+                "args": [
+                    "test",
+                    "--no-run",
+                    "--bin=elf-parser",
+                    "--package=elf-parser"
+                ],
+                "filter": {
+                    "name": "elf-parser",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        }
+    ]
+}

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "elf-parser"
+version = "0.1.0"
+dependencies = [
+ "nom",
+]
+
+[[package]]
+name = "memchr"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
+
+[[package]]
+name = "minimal-lexical"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
+
+[[package]]
+name = "nom"
+version = "7.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b1d11e1ef389c76fe5b81bcaf2ea32cf88b62bc494e19f493d0b30e7a930109"
+dependencies = [
+ "memchr",
+ "minimal-lexical",
+ "version_check",
+]
+
+[[package]]
+name = "version_check"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"

Cargo.toml

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+[package]
+name = "elf-parser"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+nom = "7"

src/elf_parser.rs

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+use nom::{IResult, bytes::complete::tag, number::complete::{le_u16, le_u32, le_u64}};
+
+use crate::elf_struct::ElfHeader;
+
+pub struct ElfParser {
+    pub file: Vec<u8>
+}
+
+impl ElfParser {
+    pub fn parse_header(input: &[u8]) -> IResult<&[u8], u64> {
+        let (input, ident) = le_u64(input)?;
+        let (input, elf_type) = le_u16(input)?;
+        let (input, version) = le_u32(input)?;
+        Ok((input, ident))
+    }
+}

src/elf_struct.rs

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+#[derive(Debug)]
+pub struct ElfHeader {
+    pub magic_number: u64,
+    pub elf_type: u16,
+    pub machine: u16,
+    pub version: u32,
+    pub entry: u64,
+    pub program_header_offset: u64,
+    pub section_header_offset: u64,
+    pub flags: u32,
+    pub elf_header_size: u16,
+    pub program_header_entry_size: u16,
+    pub program_header_num: u16,
+    pub section_header_entry_size: u16,
+    pub section_header_num: u16,
+    pub section_header_name_index: u16
+}

src/main.rs

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+mod elf_struct;
+mod elf_parser;
+use std::io::Read;
+
+use crate::elf_parser::ElfParser;
+
+fn main() {
+    println!("Hello, world!");
+    let mut file = std::fs::File::open("./test.elf").expect("Failed to open a file.");
+    let mut buf = Vec::new();
+    file.read_to_end(&mut buf).expect("Failed to read a file.");
+    let mut elf_parser = ElfParser { file: buf };
+
+    match ElfParser::parse_header(&elf_parser.file) {
+        Ok(input) => {
+            println!("{:?}", input.0[0]);
+            println!("{:?}", input.0[1]);
+            println!("{:?}", input.0[2]);
+            println!("{:?}", input.0[3]);
+            println!("{:?}", input.1);
+        },
+        Err(_) => {
+            println!("Error.");
+        }
+    }
+}
+// 282584257676671