Update 20150728 Process of the Linux kernel building.md

翻译到line 699

sources/tech/20150728 Process of the Linux kernel building.md

@@ -605,12 +605,16 @@ Building bzImage
 
 The `bzImage` is the compressed Linux kernel image. We can get it with the execution of the `make bzImage` after the `vmlinux` built. In other way we can just execute `make` without arguments and will get `bzImage` anyway because it is default image:
 
+`bzImage` 就是压缩了的linux 内核镜像。我们可以在构建了`vmlinux` 之后通过执行`make bzImage` 获得`bzImage`。同时我们可以仅仅执行`make` 而不带任何参数也可以生成`bzImage` ，因为它是在[arch/x86/kernel/Makefile](https://github.com/torvalds/linux/blob/master/arch/x86/Makefile) 里定义的、默认会生成的镜像： 
+
 ```Makefile
 all: bzImage
 ```
 
 in the [arch/x86/kernel/Makefile](https://github.com/torvalds/linux/blob/master/arch/x86/Makefile). Let's look on this target, it will help us to understand how this image builds. As I already said the `bzImage` target defined in the [arch/x86/kernel/Makefile](https://github.com/torvalds/linux/blob/master/arch/x86/Makefile) and looks like this:
 
+让我们看看这个目标，他能帮助我们理解这个镜像是怎么构建的。我已经说过了`bzImage` 师被定义在[arch/x86/kernel/Makefile](https://github.com/torvalds/linux/blob/master/arch/x86/Makefile)，定义如下：
+
 ```Makefile
 bzImage: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
@@ -620,12 +624,16 @@ bzImage: vmlinux
 
 We can see here, that first of all called `make` for the boot directory, in our case it is:
 
+在这里我们可以看到第一次为boot 目录执行`make`，在我们的例子里是这样的：
+
 ```Makefile
 boot := arch/x86/boot
 ```
 
 The main goal now to build source code in the `arch/x86/boot` and `arch/x86/boot/compressed` directories, build `setup.bin` and `vmlinux.bin`, and build the `bzImage` from they in the end. First target in the [arch/x86/boot/Makefile](https://github.com/torvalds/linux/blob/master/arch/x86/boot/Makefile) is the `$(obj)/setup.elf`:
 
+现在的主要目标是编译目录`arch/x86/boot` 和`arch/x86/boot/compressed` 的代码，构建`setup.bin` 和`vmlinux.bin`，然后用这两个文件生成`bzImage`。第一个目标是定义在[arch/x86/boot/Makefile](https://github.com/torvalds/linux/blob/master/arch/x86/boot/Makefile)  的`$(obj)/setup.elf`:
+
 ```Makefile
 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 	$(call if_changed,ld)
@@ -633,6 +641,8 @@ $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 
 We already have the `setup.ld` linker script in the `arch/x86/boot` directory and the `SETUP_OBJS` expands to the all source files from the `boot` directory. We can see first output:
 
+我们已经在目录`arch/x86/boot`有了链接脚本`setup.ld`，并且将变量`SETUP_OBJS` 扩展到`boot` 目录下的全部源代码。我们可以看看第一个输出：
+
 ```Makefile
   AS      arch/x86/boot/bioscall.o
   CC      arch/x86/boot/cmdline.o
@@ -648,11 +658,14 @@ We already have the `setup.ld` linker script in the `arch/x86/boot` directory an
 
 The next source code file is the [arch/x86/boot/header.S](https://github.com/torvalds/linux/blob/master/arch/x86/boot/header.S), but we can't build it now because this target depends on the following two header files:
 
+下一个源码文件是[arch/x86/boot/header.S](https://github.com/torvalds/linux/blob/master/arch/x86/boot/header.S)，但是我们不能现在就编译他，因为这个目标依赖于下面两个头文件：
+
 ```Makefile
 $(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h
 ```
 
 The first is `voffset.h` generated by the `sed` script that gets two addresses from the `vmlinux` with the `nm` util:
+第一个头文件`voffset.h` 是使用`sed` 脚本生成的，包含用`nm` 工具从`vmlinux` 获取的两个地址：
 
 ```C
 #define VO__end 0xffffffff82ab0000
@@ -661,6 +674,8 @@ The first is `voffset.h` generated by the `sed` script that gets two addresses f
 
 They are start and end of the kernel. The second is `zoffset.h` depens on the `vmlinux` target from the [arch/x86/boot/compressed/Makefile](https://github.com/torvalds/linux/blob/master/arch/x86/boot/compressed/Makefile):
 
+这两个地址是内核的起始和结束地址。第二个头文件`zoffset.h` 在[arch/x86/boot/compressed/Makefile](https://github.com/torvalds/linux/blob/master/arch/x86/boot/compressed/Makefile) 可以看出是依赖于目标`vmlinux`的：
+
 ```Makefile
 $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
 	$(call if_changed,zoffset)
@@ -668,6 +683,8 @@ $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
 
 The `$(obj)/compressed/vmlinux` target depends on the `vmlinux-objs-y` that compiles source code files from the [arch/x86/boot/compressed](https://github.com/torvalds/linux/tree/master/arch/x86/boot/compressed) directory and generates `vmlinux.bin`, `vmlinux.bin.bz2`, and compiles programm - `mkpiggy`. We can see this in the output:
 
+目标`$(obj)/compressed/vmlinux` 依赖于变量`vmlinux-objs-y` —— 表明要编译目录[arch/x86/boot/compressed](https://github.com/torvalds/linux/tree/master/arch/x86/boot/compressed) 下的源代码，然后生成`vmlinux.bin`, `vmlinux.bin.bz2`, 和编译工具 - `mkpiggy`。我们可以在下面的输出看出来：
+
 ```Makefile
   LDS     arch/x86/boot/compressed/vmlinux.lds
   AS      arch/x86/boot/compressed/head_64.o