使用cargo管理一些C文件的编译，并且移动部分汇编到arch目录 (#447)

* 使用cargo管理main.c的编译

* 使用build-scripts编译架构相关的c代码

* 删除elf.h

build-scripts/kernel_build/src/cfiles/arch/x86_64.rs

@@ -2,7 +2,7 @@ use std::path::PathBuf;
 
 use cc::Build;
 
-use crate::utils::FileUtils;
+use crate::{constant::ARCH_DIR_X86_64, utils::FileUtils};
 
 use super::CFilesArch;
 
@@ -18,10 +18,26 @@ impl CFilesArch for X86_64CFilesArch {
     }
 
     fn setup_files(&self, _c: &mut Build, files: &mut Vec<PathBuf>) {
-        files.push(PathBuf::from("src/arch/x86_64/driver/hpet.c"));
+        files.push(arch_path("driver/hpet.c"));
         // 获取`kernel/src/arch/x86_64/driver/apic`下的所有C文件
         files.append(&mut FileUtils::list_all_files(
-            &PathBuf::from("src/arch/x86_64/driver/apic"),
+            &arch_path("driver/apic"),
+            Some("c"),
+            true,
+        ));
+
+        files.append(&mut FileUtils::list_all_files(
+            &arch_path("init"),
+            Some("c"),
+            true,
+        ));
+        files.append(&mut FileUtils::list_all_files(
+            &arch_path("asm"),
+            Some("c"),
+            true,
+        ));
+        files.append(&mut FileUtils::list_all_files(
+            &arch_path("interrupt"),
             Some("c"),
             true,
         ));
@@ -36,3 +52,7 @@ impl CFilesArch for X86_64CFilesArch {
         c.asm_flag("-m64");
     }
 }
+
+fn arch_path(relative_path: &str) -> PathBuf {
+    PathBuf::from(format!("{}/{}", ARCH_DIR_X86_64, relative_path))
+}

build-scripts/kernel_build/src/constant/mod.rs

@@ -0,0 +1 @@
+pub const ARCH_DIR_X86_64: &str = "src/arch/x86_64";

build-scripts/kernel_build/src/lib.rs

@@ -4,6 +4,7 @@ extern crate cc;
 
 mod bindgen;
 mod cfiles;
+mod constant;
 mod kconfig;
 mod utils;