Patch gcc toolchain (#111)

* 添加了GCC_cross_compile——tool_chain

* - 解决环境变量路径拼接时，多了`/`的问题
- apt安装时增加-y,不需用户确认

* 解决添加环境变量的命令有误的问题

* 修正编译错误时，还会执行下一步的问题

* new: 编译完成后清理临时文件

* 更新makefile

* 调整：把grub安装在 $HOME/opt/dragonos-grub下

* new: 新增dockerfile

* 将镜像源换成中科大的（原因是清华的总是ban掉用于构建镜像的服务器的ip）

* 修改为基于debian bullseye构建

* 取消指定版本

* 修复MBR磁盘镜像未设置启动标志的bug

* 取消在docker中安装grub

* 安装grub的过程改到客户机上进行

* bootstrap.sh 添加--no-docker

* 使用新版的docker编译镜像

* 修补, 添加了一些关于gcc的check

Co-authored-by: longjin <longjin@RinGoTek.cn>

kernel/Makefile

@@ -1,5 +1,6 @@
 
 all: 
+	@if [ -z $$DragonOS_GCC ]; then echo "\033[31m  [错误]尚未安装DragonOS交叉编译器, 请使用tools文件夹下的build_gcc_toolchain.sh脚本安装  \033[0m"; exit 1; fi
 	$(MAKE) -C src all
 	
 

kernel/src/Makefile

@@ -23,7 +23,7 @@ kernel_subdirs := common driver process debug filesystem time arch exception mm
 
 head.o: head.S
 	$(CC) -E head.S > _head.s # 预处理
-	as $(ASFLAGS) -o head.o _head.s
+	$(AS) $(ASFLAGS) -o head.o _head.s
 
 
 main.o: main.c 
@@ -38,7 +38,7 @@ kernel_rust:
 all: kernel
 
 	@echo "Linking kernel..."
-	ld -b elf64-x86-64 -z muldefs -o kernel head.o main.o $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a -T link.lds
+	$(LD) -b elf64-x86-64 -z muldefs -o kernel head.o main.o $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a -T link.lds
 # 生成kallsyms
 	current_dir=$(pwd)
 	
@@ -55,10 +55,10 @@ all: kernel
 # 重新链接
 	@echo "Re-Linking kernel..."
 	@echo $(shell find . -name "*.o")
-	ld -b elf64-x86-64 -z muldefs -o kernel head.o main.o $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a ./debug/kallsyms.o  -T link.lds
+	$(LD) -b elf64-x86-64 -z muldefs -o kernel head.o main.o $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a ./debug/kallsyms.o  -T link.lds
 	@echo "Generating kernel ELF file..."
 # 生成内核文件
-	objcopy -I elf64-x86-64 -O elf64-x86-64 -R ".comment" -R ".eh_frame" kernel ../../bin/kernel/kernel.elf
+	$(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 -R ".comment" -R ".eh_frame" kernel ../../bin/kernel/kernel.elf
 	@echo "Kernel Build Done."
 
 ECHO:

kernel/src/exception/Makefile

@@ -6,7 +6,7 @@ all: entry.o irq.o softirq.o trap.o
 
 entry.o: entry.S
 	$(CC) -E entry.S > _entry.s
-	as $(ASFLAGS) -o entry.o _entry.s
+	$(AS) $(ASFLAGS) -o entry.o _entry.s
 
 trap.o: trap.c
 	$(CC) $(CFLAGS) -c trap.c -o trap.o

kernel/src/head.S

@@ -105,14 +105,14 @@ multiboot_header:
     .long CHECKSUM
     // 添加其它内容在此，详细信息见 Multiboot2 Specification version 2.0.pdf
 
-// 设置帧缓冲区
+// 设置帧缓冲区(同时在这里设置qemu的分辨率, 默认为: 1440*900, 还支持: 640*480, 等)
 .align 8
 framebuffer_tag_start:
     .short MULTIBOOT_HEADER_TAG_FRAMEBUFFER
     .short MULTIBOOT_HEADER_TAG_OPTIONAL
     .long framebuffer_tag_end - framebuffer_tag_start
-    .long 1440
-    .long 900
+    .long 1440   // 宽
+    .long 900   // 高
     .long 32
 framebuffer_tag_end:
 .align 8
@@ -662,4 +662,4 @@ gdt64_pointer:
 gdt64_pointer64:
     .short gdt64_pointer-gdt64-1
     .quad gdt64
-
+    

kernel/src/process/Makefile

@@ -13,7 +13,7 @@ $(kernel_process_objs): ECHO
 
 procs.o: proc.S
 	$(CC) -E proc.S > _proc.s
-	as $(ASFLAGS) -o procs.o _proc.s
+	$(AS) $(ASFLAGS) -o procs.o _proc.s
 
 all: procs.o $(kernel_process_objs)