纽约大学的tinylinker代码

代码说明：

小型链接器，系统级编程课程设计，题目要求编写两个函数-A small linker, system-level programming course design。 You are to implement a two-pass linker in C, C++, or Java and submit the source code, which we will compile and run. The target machine is word addressable and has a memory of 600 words, each consisting of 4 decimal digits. The first (leftmost) digit is the opcode, which is unchanged by the linker