文章目录
- 前言
- 前置知识
- 实验操作
- 实现一
- 实验二
- 实验三
- 实验四
- 实验五
前言
博客记录《操作系统真象还原》第十二章实验的操作~
实验环境：ubuntu18.04+VMware ， Bochs下载安装
实验内容：
- 实现系统调用。
- 实现write系统调用。
- 实现printf。
3.1 仅支持16进制。
3.2 完善printf。支持类型字符s,c,d的输出。 - 实现堆内存管理（实现malloc部分）。
- 实现free函数。
前置知识
系统调用
系统调用：系统调用就是让用户进程申请操作系统的帮助，让操作系统帮其完成某项工作，也就是相当于用户进程调用了操作系统的功能。
系统调用接口：操作系统提供了一组接口，每个接口都是不同的功能，用户进程需要什么功能就调用什么，这组接口就是系统调用接口。
系统调用的实现思路
- 用中断门实现系统调用。(效仿 Linux 用 0x80 号中断作为系统调用的入口)
- 在 IDT（Interrupt Descriptor Table） 中安装 0x80 号中断对应的描述符，在该描述符中注册系统调用对应的中断处理例程。
- 建立系统调用子功能表 syscall_table，利用 eax 寄存器中的子功能号在该表中索引相应的处理函数。
- 用宏实现用户空间系统调用接口_syscall。
实验操作
实现一
修改及新建 kernel.S,interrupt.c,syscall.c,syscall.h,syscall-init.c,syscall-init.h，thread.c,init.c
自己新建 kernel/kernel.h
#ifndef __KERNEL_KERNEL_H
#define __KERNEL_KERNEL_H
void syscall_handler(void);
#endif
makefile文件
BUILD_DIR = ./build
ENTRY_POINT = 0xc0001500
AS = nasm
CC = gcc
LD = ld
LIB = -I lib/ -I lib/kernel/ -I lib/user/ -I kernel/ -I device/
ASFLAGS = -f elf
CFLAGS = -Wall -m32 -fno-stack-protector $(LIB) -c -fno-builtin -W -Wstrict-prototypes -Wmissing-prototypes
LDFLAGS = -m elf_i386 -Ttext $(ENTRY_POINT) -e main -Map $(BUILD_DIR)/kernel.map
OBJS = $(BUILD_DIR)/main.o $(BUILD_DIR)/init.o $(BUILD_DIR)/interrupt.o \
$(BUILD_DIR)/timer.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/print.o $(BUILD_DIR)/switch.o \
$(BUILD_DIR)/debug.o $(BUILD_DIR)/string.o $(BUILD_DIR)/memory.o \
$(BUILD_DIR)/bitmap.o $(BUILD_DIR)/thread.o $(BUILD_DIR)/list.o \
$(BUILD_DIR)/sync.o $(BUILD_DIR)/console.o $(BUILD_DIR)/keyboard.o \
$(BUILD_DIR)/ioqueue.o $(BUILD_DIR)/tss.o $(BUILD_DIR)/process.o \
$(BUILD_DIR)/syscall-init.o $(BUILD_DIR)/syscall.o
############## c代码编译 ###############
$(BUILD_DIR)/main.o: kernel/main.c lib/kernel/print.h \
lib/stdint.h kernel/init.h lib/string.h kernel/memory.h \
thread/thread.h kernel/interrupt.h device/console.h \
device/keyboard.h device/ioqueue.h userprog/process.h \
lib/user/syscall.h userprog/syscall-init.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/init.o: kernel/init.c kernel/init.h lib/kernel/print.h \
lib/stdint.h kernel/interrupt.h device/timer.h kernel/memory.h \
thread/thread.h device/console.h device/keyboard.h userprog/tss.h \
userprog/syscall-init.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/interrupt.o: kernel/interrupt.c kernel/interrupt.h \
lib/stdint.h kernel/global.h lib/kernel/io.h lib/kernel/print.h \
kernel/kernel.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/timer.o: device/timer.c device/timer.h lib/kernel/io.h lib/kernel/print.h \
kernel/interrupt.h thread/thread.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/debug.o: kernel/debug.c kernel/debug.h \
lib/kernel/print.h lib/stdint.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/string.o: lib/string.c lib/string.h \
kernel/debug.h kernel/global.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/memory.o: kernel/memory.c kernel/memory.h \
lib/stdint.h lib/kernel/bitmap.h kernel/debug.h lib/string.h \
thread/sync.h thread/thread.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/bitmap.o: lib/kernel/bitmap.c lib/kernel/bitmap.h kernel/global.h \
lib/string.h kernel/interrupt.h lib/kernel/print.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/thread.o: thread/thread.c thread/thread.h \
lib/stdint.h lib/string.h kernel/global.h kernel/memory.h \
kernel/debug.h kernel/interrupt.h lib/kernel/print.h \
userprog/process.h thread/sync.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/list.o: lib/kernel/list.c lib/kernel/list.h \
kernel/interrupt.h lib/stdint.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/sync.o: thread/sync.c thread/sync.h \
lib/stdint.h thread/thread.h kernel/debug.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/console.o: device/console.c device/console.h \
lib/kernel/print.h thread/sync.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/keyboard.o: device/keyboard.c device/keyboard.h \
lib/kernel/print.h lib/kernel/io.h kernel/interrupt.h \
kernel/global.h lib/stdint.h device/ioqueue.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/ioqueue.o: device/ioqueue.c device/ioqueue.h \
kernel/interrupt.h kernel/global.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/tss.o: userprog/tss.c userprog/tss.h \
kernel/global.h thread/thread.h lib/kernel/print.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/process.o: userprog/process.c userprog/process.h \
lib/string.h kernel/global.h kernel/memory.h lib/kernel/print.h \
thread/thread.h kernel/interrupt.h kernel/debug.h device/console.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/syscall-init.o: userprog/syscall-init.c userprog/syscall-init.h \
lib/user/syscall.h lib/stdint.h lib/kernel/print.h kernel/interrupt.h thread/thread.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/syscall.o: lib/user/syscall.c lib/user/syscall.h
$(CC) $(CFLAGS) $< -o $@
############## 汇编代码编译 ###############
$(BUILD_DIR)/kernel.o: kernel/kernel.S
$(AS) $(ASFLAGS) $< -o $@
$(BUILD_DIR)/print.o: lib/kernel/print.S
$(AS) $(ASFLAGS) $< -o $@
$(BUILD_DIR)/switch.o: thread/switch.S
$(AS) $(ASFLAGS) $< -o $@
############## 链接所有目标文件 #############
$(BUILD_DIR)/kernel.bin: $(OBJS)
$(LD) $(LDFLAGS) $^ -o $@
.PHONY : mk_dir hd clean all
mk_dir:
if [ ! -d $(BUILD_DIR) ]; then mkdir $(BUILD_DIR); fi
hd:
dd if=$(BUILD_DIR)/kernel.bin \
of=/home/cooiboi/bochs/boot/hd60M.img \
bs=512 count=200 seek=9 conv=notrunc
clean:
cd $(BUILD_DIR) && rm -f ./*
build: $(BUILD_DIR)/kernel.bin
all: mk_dir build hd
实验二
新建及修改 syscall.h，syscall.c，syscall-init.h，syscall-init.c 添加系统调用。
实验三
新建及修改stdio.h ，stdio.c ,main.c
BUILD_DIR = ./build
ENTRY_POINT = 0xc0001500
AS = nasm
CC = gcc
LD = ld
LIB = -I lib/ -I lib/kernel/ -I lib/user/ -I kernel/ -I device/
ASFLAGS = -f elf
CFLAGS = -Wall -m32 -fno-stack-protector $(LIB) -c -fno-builtin -W -Wstrict-prototypes -Wmissing-prototypes
LDFLAGS = -m elf_i386 -Ttext $(ENTRY_POINT) -e main -Map $(BUILD_DIR)/kernel.map
OBJS = $(BUILD_DIR)/main.o $(BUILD_DIR)/init.o $(BUILD_DIR)/interrupt.o \
$(BUILD_DIR)/timer.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/print.o $(BUILD_DIR)/switch.o \
$(BUILD_DIR)/debug.o $(BUILD_DIR)/string.o $(BUILD_DIR)/memory.o \
$(BUILD_DIR)/bitmap.o $(BUILD_DIR)/thread.o $(BUILD_DIR)/list.o \
$(BUILD_DIR)/sync.o $(BUILD_DIR)/console.o $(BUILD_DIR)/keyboard.o \
$(BUILD_DIR)/ioqueue.o $(BUILD_DIR)/tss.o $(BUILD_DIR)/process.o \
$(BUILD_DIR)/syscall-init.o $(BUILD_DIR)/syscall.o $(BUILD_DIR)/stdio.o
############## c代码编译 ###############
$(BUILD_DIR)/main.o: kernel/main.c lib/kernel/print.h \
lib/stdint.h kernel/init.h lib/string.h kernel/memory.h \
thread/thread.h kernel/interrupt.h device/console.h \
device/keyboard.h device/ioqueue.h userprog/process.h \
lib/user/syscall.h userprog/syscall-init.h lib/stdio.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/init.o: kernel/init.c kernel/init.h lib/kernel/print.h \
lib/stdint.h kernel/interrupt.h device/timer.h kernel/memory.h \
thread/thread.h device/console.h device/keyboard.h userprog/tss.h \
userprog/syscall-init.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/interrupt.o: kernel/interrupt.c kernel/interrupt.h \
lib/stdint.h kernel/global.h lib/kernel/io.h lib/kernel/print.h \
kernel/kernel.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/timer.o: device/timer.c device/timer.h lib/kernel/io.h lib/kernel/print.h \
kernel/interrupt.h thread/thread.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/debug.o: kernel/debug.c kernel/debug.h \
lib/kernel/print.h lib/stdint.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/string.o: lib/string.c lib/string.h \
kernel/debug.h kernel/global.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/memory.o: kernel/memory.c kernel/memory.h \
lib/stdint.h lib/kernel/bitmap.h kernel/debug.h lib/string.h \
thread/sync.h thread/thread.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/bitmap.o: lib/kernel/bitmap.c lib/kernel/bitmap.h kernel/global.h \
lib/string.h kernel/interrupt.h lib/kernel/print.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/thread.o: thread/thread.c thread/thread.h \
lib/stdint.h lib/string.h kernel/global.h kernel/memory.h \
kernel/debug.h kernel/interrupt.h lib/kernel/print.h \
userprog/process.h thread/sync.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/list.o: lib/kernel/list.c lib/kernel/list.h \
kernel/interrupt.h lib/stdint.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/sync.o: thread/sync.c thread/sync.h \
lib/stdint.h thread/thread.h kernel/debug.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/console.o: device/console.c device/console.h \
lib/kernel/print.h thread/sync.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/keyboard.o: device/keyboard.c device/keyboard.h \
lib/kernel/print.h lib/kernel/io.h kernel/interrupt.h \
kernel/global.h lib/stdint.h device/ioqueue.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/ioqueue.o: device/ioqueue.c device/ioqueue.h \
kernel/interrupt.h kernel/global.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/tss.o: userprog/tss.c userprog/tss.h \
kernel/global.h thread/thread.h lib/kernel/print.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/process.o: userprog/process.c userprog/process.h \
lib/string.h kernel/global.h kernel/memory.h lib/kernel/print.h \
thread/thread.h kernel/interrupt.h kernel/debug.h device/console.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/syscall-init.o: userprog/syscall-init.c userprog/syscall-init.h \
lib/user/syscall.h lib/stdint.h lib/kernel/print.h kernel/interrupt.h thread/thread.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/syscall.o: lib/user/syscall.c lib/user/syscall.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/stdio.o: lib/stdio.c lib/stdio.h lib/stdint.h lib/string.h lib/user/syscall.h
$(CC) $(CFLAGS) $< -o $@
############## 汇编代码编译 ###############
$(BUILD_DIR)/kernel.o: kernel/kernel.S
$(AS) $(ASFLAGS) $< -o $@
$(BUILD_DIR)/print.o: lib/kernel/print.S
$(AS) $(ASFLAGS) $< -o $@
$(BUILD_DIR)/switch.o: thread/switch.S
$(AS) $(ASFLAGS) $< -o $@
############## 链接所有目标文件 #############
$(BUILD_DIR)/kernel.bin: $(OBJS)
$(LD) $(LDFLAGS) $^ -o $@
.PHONY : mk_dir hd clean all
mk_dir:
if [ ! -d $(BUILD_DIR) ]; then mkdir $(BUILD_DIR); fi
hd:
dd if=$(BUILD_DIR)/kernel.bin \
of=/home/cooiboi/bochs/boot/hd60M.img \
bs=512 count=200 seek=9 conv=notrunc
clean:
cd $(BUILD_DIR) && rm -f ./*
build: $(BUILD_DIR)/kernel.bin
all: mk_dir build hd
完善printf输出
修改stdio.c,main.c。
makefile不变。
实验四
修改memory.h，memory.c，thread.c，process.c
修改main.c
makefile文件
BUILD_DIR = ./build
ENTRY_POINT = 0xc0001500
AS = nasm
CC = gcc
LD = ld
LIB = -I lib/ -I lib/kernel/ -I lib/user/ -I kernel/ -I device/
ASFLAGS = -f elf
CFLAGS = -Wall -m32 -fno-stack-protector $(LIB) -c -fno-builtin -W -Wstrict-prototypes -Wmissing-prototypes
LDFLAGS = -m elf_i386 -Ttext $(ENTRY_POINT) -e main -Map $(BUILD_DIR)/kernel.map
OBJS = $(BUILD_DIR)/main.o $(BUILD_DIR)/init.o $(BUILD_DIR)/interrupt.o \
$(BUILD_DIR)/timer.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/print.o $(BUILD_DIR)/switch.o \
$(BUILD_DIR)/debug.o $(BUILD_DIR)/string.o $(BUILD_DIR)/memory.o \
$(BUILD_DIR)/bitmap.o $(BUILD_DIR)/thread.o $(BUILD_DIR)/list.o \
$(BUILD_DIR)/sync.o $(BUILD_DIR)/console.o $(BUILD_DIR)/keyboard.o \
$(BUILD_DIR)/ioqueue.o $(BUILD_DIR)/tss.o $(BUILD_DIR)/process.o \
$(BUILD_DIR)/syscall-init.o $(BUILD_DIR)/syscall.o $(BUILD_DIR)/stdio.o
############## c代码编译 ###############
$(BUILD_DIR)/main.o: kernel/main.c lib/kernel/print.h \
lib/stdint.h kernel/init.h lib/string.h kernel/memory.h \
thread/thread.h kernel/interrupt.h device/console.h \
device/keyboard.h device/ioqueue.h userprog/process.h \
lib/user/syscall.h userprog/syscall-init.h lib/stdio.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/init.o: kernel/init.c kernel/init.h lib/kernel/print.h \
lib/stdint.h kernel/interrupt.h device/timer.h kernel/memory.h \
thread/thread.h device/console.h device/keyboard.h userprog/tss.h \
userprog/syscall-init.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/interrupt.o: kernel/interrupt.c kernel/interrupt.h \
lib/stdint.h kernel/global.h lib/kernel/io.h lib/kernel/print.h \
kernel/kernel.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/timer.o: device/timer.c device/timer.h lib/kernel/io.h lib/kernel/print.h \
kernel/interrupt.h thread/thread.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/debug.o: kernel/debug.c kernel/debug.h \
lib/kernel/print.h lib/stdint.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/string.o: lib/string.c lib/string.h \
kernel/debug.h kernel/global.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/memory.o: kernel/memory.c kernel/memory.h \
lib/stdint.h lib/kernel/bitmap.h kernel/debug.h lib/string.h kernel/global.h \
thread/sync.h thread/thread.h lib/kernel/list.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/bitmap.o: lib/kernel/bitmap.c lib/kernel/bitmap.h kernel/global.h \
lib/string.h kernel/interrupt.h lib/kernel/print.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/thread.o: thread/thread.c thread/thread.h \
lib/stdint.h lib/string.h kernel/global.h kernel/memory.h \
kernel/debug.h kernel/interrupt.h lib/kernel/print.h \
userprog/process.h thread/sync.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/list.o: lib/kernel/list.c lib/kernel/list.h \
kernel/interrupt.h lib/stdint.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/sync.o: thread/sync.c thread/sync.h \
lib/stdint.h thread/thread.h kernel/debug.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/console.o: device/console.c device/console.h \
lib/kernel/print.h thread/sync.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/keyboard.o: device/keyboard.c device/keyboard.h \
lib/kernel/print.h lib/kernel/io.h kernel/interrupt.h \
kernel/global.h lib/stdint.h device/ioqueue.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/ioqueue.o: device/ioqueue.c device/ioqueue.h \
kernel/interrupt.h kernel/global.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/tss.o: userprog/tss.c userprog/tss.h \
kernel/global.h thread/thread.h lib/kernel/print.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/process.o: userprog/process.c userprog/process.h \
lib/string.h kernel/global.h kernel/memory.h lib/kernel/print.h \
thread/thread.h kernel/interrupt.h kernel/debug.h device/console.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/syscall-init.o: userprog/syscall-init.c userprog/syscall-init.h \
lib/user/syscall.h lib/stdint.h lib/kernel/print.h kernel/interrupt.h thread/thread.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/syscall.o: lib/user/syscall.c lib/user/syscall.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/stdio.o: lib/stdio.c lib/stdio.h lib/stdint.h lib/string.h lib/user/syscall.h
$(CC) $(CFLAGS) $< -o $@
############## 汇编代码编译 ###############
$(BUILD_DIR)/kernel.o: kernel/kernel.S
$(AS) $(ASFLAGS) $< -o $@
$(BUILD_DIR)/print.o: lib/kernel/print.S
$(AS) $(ASFLAGS) $< -o $@
$(BUILD_DIR)/switch.o: thread/switch.S
$(AS) $(ASFLAGS) $< -o $@
############## 链接所有目标文件 #############
$(BUILD_DIR)/kernel.bin: $(OBJS)
$(LD) $(LDFLAGS) $^ -o $@
.PHONY : mk_dir hd clean all
mk_dir:
if [ ! -d $(BUILD_DIR) ]; then mkdir $(BUILD_DIR); fi
hd:
dd if=$(BUILD_DIR)/kernel.bin \
of=/home/cooiboi/bochs/boot/hd60M.img \
bs=512 count=200 seek=9 conv=notrunc
clean:
cd $(BUILD_DIR) && rm -f ./*
build: $(BUILD_DIR)/kernel.bin
all: mk_dir build hd
实验五
修改 memory.c ， memory.h , main.c
同时记得修改syscall.c,syscall.h，syscall-init.c , syscall-init.h 文件。
makefile
BUILD_DIR = ./build
ENTRY_POINT = 0xc0001500
AS = nasm
CC = gcc
LD = ld
LIB = -I lib/ -I lib/kernel/ -I lib/user/ -I kernel/ -I device/
ASFLAGS = -f elf
CFLAGS = -Wall -m32 -fno-stack-protector $(LIB) -c -fno-builtin -W -Wstrict-prototypes -Wmissing-prototypes
LDFLAGS = -m elf_i386 -Ttext $(ENTRY_POINT) -e main -Map $(BUILD_DIR)/kernel.map
OBJS = $(BUILD_DIR)/main.o $(BUILD_DIR)/init.o $(BUILD_DIR)/interrupt.o \
$(BUILD_DIR)/timer.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/print.o $(BUILD_DIR)/switch.o \
$(BUILD_DIR)/debug.o $(BUILD_DIR)/string.o $(BUILD_DIR)/memory.o \
$(BUILD_DIR)/bitmap.o $(BUILD_DIR)/thread.o $(BUILD_DIR)/list.o \
$(BUILD_DIR)/sync.o $(BUILD_DIR)/console.o $(BUILD_DIR)/keyboard.o \
$(BUILD_DIR)/ioqueue.o $(BUILD_DIR)/tss.o $(BUILD_DIR)/process.o \
$(BUILD_DIR)/syscall-init.o $(BUILD_DIR)/syscall.o $(BUILD_DIR)/stdio.o
############## c代码编译 ###############
$(BUILD_DIR)/main.o: kernel/main.c lib/kernel/print.h \
lib/stdint.h kernel/init.h lib/string.h kernel/memory.h \
thread/thread.h kernel/interrupt.h device/console.h \
device/keyboard.h device/ioqueue.h userprog/process.h \
lib/user/syscall.h userprog/syscall-init.h lib/stdio.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/init.o: kernel/init.c kernel/init.h lib/kernel/print.h \
lib/stdint.h kernel/interrupt.h device/timer.h kernel/memory.h \
thread/thread.h device/console.h device/keyboard.h userprog/tss.h \
userprog/syscall-init.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/interrupt.o: kernel/interrupt.c kernel/interrupt.h \
lib/stdint.h kernel/global.h lib/kernel/io.h lib/kernel/print.h \
kernel/kernel.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/timer.o: device/timer.c device/timer.h lib/kernel/io.h lib/kernel/print.h \
kernel/interrupt.h thread/thread.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/debug.o: kernel/debug.c kernel/debug.h \
lib/kernel/print.h lib/stdint.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/string.o: lib/string.c lib/string.h \
kernel/debug.h kernel/global.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/memory.o: kernel/memory.c kernel/memory.h \
lib/stdint.h lib/kernel/bitmap.h kernel/debug.h lib/string.h kernel/global.h \
thread/sync.h thread/thread.h lib/kernel/list.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/bitmap.o: lib/kernel/bitmap.c lib/kernel/bitmap.h kernel/global.h \
lib/string.h kernel/interrupt.h lib/kernel/print.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/thread.o: thread/thread.c thread/thread.h \
lib/stdint.h lib/string.h kernel/global.h kernel/memory.h \
kernel/debug.h kernel/interrupt.h lib/kernel/print.h \
userprog/process.h thread/sync.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/list.o: lib/kernel/list.c lib/kernel/list.h \
kernel/interrupt.h lib/stdint.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/sync.o: thread/sync.c thread/sync.h \
lib/stdint.h thread/thread.h kernel/debug.h kernel/interrupt.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/console.o: device/console.c device/console.h \
lib/kernel/print.h thread/sync.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/keyboard.o: device/keyboard.c device/keyboard.h \
lib/kernel/print.h lib/kernel/io.h kernel/interrupt.h \
kernel/global.h lib/stdint.h device/ioqueue.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/ioqueue.o: device/ioqueue.c device/ioqueue.h \
kernel/interrupt.h kernel/global.h kernel/debug.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/tss.o: userprog/tss.c userprog/tss.h \
kernel/global.h thread/thread.h lib/kernel/print.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/process.o: userprog/process.c userprog/process.h \
lib/string.h kernel/global.h kernel/memory.h lib/kernel/print.h \
thread/thread.h kernel/interrupt.h kernel/debug.h device/console.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/syscall-init.o: userprog/syscall-init.c userprog/syscall-init.h \
lib/user/syscall.h lib/stdint.h lib/kernel/print.h kernel/interrupt.h thread/thread.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/syscall.o: lib/user/syscall.c lib/user/syscall.h
$(CC) $(CFLAGS) $< -o $@
$(BUILD_DIR)/stdio.o: lib/stdio.c lib/stdio.h lib/stdint.h lib/string.h lib/user/syscall.h
$(CC) $(CFLAGS) $< -o $@
############## 汇编代码编译 ###############
$(BUILD_DIR)/kernel.o: kernel/kernel.S
$(AS) $(ASFLAGS) $< -o $@
$(BUILD_DIR)/print.o: lib/kernel/print.S
$(AS) $(ASFLAGS) $< -o $@
$(BUILD_DIR)/switch.o: thread/switch.S
$(AS) $(ASFLAGS) $< -o $@
############## 链接所有目标文件 #############
$(BUILD_DIR)/kernel.bin: $(OBJS)
$(LD) $(LDFLAGS) $^ -o $@
.PHONY : mk_dir hd clean all
mk_dir:
if [ ! -d $(BUILD_DIR) ]; then mkdir $(BUILD_DIR); fi
hd:
dd if=$(BUILD_DIR)/kernel.bin \
of=/home/cooiboi/bochs/boot/hd60M.img \
bs=512 count=200 seek=9 conv=notrunc
clean:
cd $(BUILD_DIR) && rm -f ./*
build: $(BUILD_DIR)/kernel.bin
all: mk_dir build hd
参考资料
- 《操作系统真象还原》
- 《操作系统真象还原》第十二章 ---- 实现系统调用深入浅出 进一步完善堆内存分配与Printf函数 让用户进程有话可说（上）
- 《操作系统-真象还原》12. 进一步完善内核
