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1. “Hello world” ── 引导程序(Boot loader)
做好了准备工作，现在可以开始写操作系统了。一般学习编程的第一个程序都是“hello world”，因此我们的操作系统也不例外。下面看看用10分钟的时间如何写一个可以在裸机（虚拟机）上直接运行的“操作系统”。
May 10 2010
做一个操作系统的准备工作
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工欲善其事，必先利其器！
想要做一个操作系统，好用的工具必不可少，下面介绍所需要工具。
Continue reading “做一个操作系统的准备工作”
May 05 2010
Install GDB cross debugger for i386 ELF on Mac OS X
1. Download and install gettext: http://www.gnu.org/software/gettext/
2. Install i386-elf-gcc from MacPorts:
sudo port install i386-elf-gcc sudo port -f activate i386-elf-gcc
You may need to create some symbolic links:
cd /opt/local/bin sudo ln -s i386-elf-gcc-4.3.2 i386-elf-gcc sudo ln -s i386-elf-g++-4.3.2 i386-elf-g++
3. Download GDB: http://www.gnu.org/software/gdb/download/
4. Configure and install GDB for i386-ELF:
./configure --prefix=/opt/local \
--program-prefix=i386-elf- \
--target=i386-elf \
--with-gmp=/opt/local \
--with-libelf=/opt/local \
--with-build-libsubdir=/opt/local
make
sudo make install
Then the i386-ELF GDB will be installed in /opt/local with program name i386-elf-gdb.
Note: option ‘–target=i386-elf’ specifies guest(target) type ‘i386 ELF’.