寻找 16 位 x86 编译器
我正在从事一个嵌入式系统项目，并且遇到了编译器以编程方式嵌入到 Paradigm C++ IDE 中的问题.我希望能够自动构建.
I am working on an embedded systems project and have run into an issue of the compiler being programatically embedded in the Paradigm C++ IDE. I would like to be able to automate building.
处理器是 AMD186ES.我没有使用操作系统 - 只是裸机的东西.我需要从 C++ 生成实模式 16 位 8086 机器代码.
The processor is the AMD186ES. I am not working with the OS - just baremetal stuff. I need to generate real-mode 16-bit 8086 machine code from C++.
我的谷歌搜索表明 G++ 可以构建这样的代码.
My googling indicates that G++ can build such code.
我的问题是:
可以配置g++来构建这个机器码吗?
Can g++ be configured to build this machine code?
是否有其他 C++ 编译器也可以做到这一点?
Are there other C++ compilers that can do it as well?
推荐答案
我目前正在使用 gnu as(binutils 的一部分和用于 gcc 的汇编器)，并且我已经成功汇编了 16 位汇编代码带有以下内容:
I am currently using gnu as (part of binutils and the assembler used for gcc) and I have successfully been assembling 16bit assembly code with the following:
as <file>
ld --oformat binary -Ttext 0x0 -e start <file>
我的程序集文件以:
.code16
.globl start
.text
start:
因为它的普通二进制省略了行，
since its plain binary omitting the lines,
.globl start
start:
只会产生警告，即使平面二进制文件不需要入口点.
will simply yield an warning, even though flat binaries need no entry point.
我通过艰苦的方式学到的东西；
something I learned the hard way;
-Ttext 0x0
很关键，否则 .text 段会被推到 16 位寻址范围之外(不要问我为什么)
is critical, otherwise the .text segment is pushed outside of 16bit addressing range (don't ask me why)
我个人还在学习汇编，所以这只是我的方式，不一定是最好的方式.
I am personally still learning assembly, so this is just my way, not necessarily the best way.
如果你正在编写启动代码，你应该改变
If you are writing boot code, you should change
-Ttext 0x0
到
-Ttext 0x7c00
这将使您的内存地址偏移 0x7c00，因为引导代码通常由 BIOS 加载到 0x7c00.
this will offset your memory addresses by 0x7c00 since boot code is usually loaded at 0x7c00 by the BIOS.
相关文章