Question

我正在使用汇编程序（sic / Xe），我正在编写操作码表。编译时我收到错误

g ++ opcodetab.cc 未定义的首次引用文件中的符号 main /opt/local/bin/../lib/gcc/sparc-sun-solaris2.10/3.4.6/crt1.o ld：致命：符号引用错误。没有输出写入a.out collect2：ld返回1退出状态

    #include <string>
    #include <map>
    #include <utility>
    #include <iostream>

    #include "opcodetab.h"
    #include "opcode_error_exception.h"

    using namespace std;

    opcodetab::opcodetab() {
        //Populate the map with opcodes
        //[Mnemonic] = (Hex Value, Format/Size)
        for (int i = 0; i < NUM_OF_OPCODES; i++)
            opcodes[codes[i]] = Info(values[i], sizes[i]);
    }

    string opcodetab::get_machine_code(string inOpcode) {
        //change each element of the string to upper case
        for(unsigned int i=0;i<inOpcode.length();i++)
          {
             inOpcode[i] = toupper(inOpcode[i]);
          }

        if(inOpcode[0] == '+') // check if format  4
            inOpcode.erase (0,1); //erase the character at first position

        opcodes_iter = opcodes.find(inOpcode);
        if(opcodes_iter == opcodes.end()){
            throw opcode_error_exception("opcode " + inOpcode + " not found");}

        return (opcodes_iter->second.machine_code);

    }

    int opcodetab::get_instruction_size(string inOpcode) {

        /* Converts string to uppercase, checks to see if first character is a '+' for
         *  possible extended format then checks to see if it is a valid opcode if it is
         *  return a 4 else check to see if it is a valid 1 2 or 3 format*/

        for (unsigned int i = 0; i < inOpcode.length(); i++) {
            inOpcode[i] = toupper(inOpcode[i]);
        }

        if (inOpcode[0] == '+') {
            inOpcode.erase(0, 1);
            opcodes_iter = opcodes.find(inOpcode);
            if (opcodes_iter == opcodes.end()){
                throw opcode_error_exception("opcode " + inOpcode + " not found");}
            else if ((opcodes_iter->second.length) != 3){
                throw opcode_error_exception("opcode " + inOpcode + " is not a valid format 4 opcode");}
            else
                return 4;
        } else {
            opcodes_iter = opcodes.find(inOpcode);
            if (opcodes_iter == opcodes.end()){
                throw opcode_error_exception("opcode " + inOpcode + " not found");}
            return (opcodes_iter->second.length);
        }
    }

有没有人有解决方案？这是一个汇编程序

在我的opcode.cc文件中出错

0 个答案: