我应该如何使用字典作为 python 中的查找表从文本文件创建二进制文件
[英]How should I create a binary file from a text file using a dictionary as lookup table in python
问题描述
I'm working on an assembler for my CPU I wrote in python.
我正在为我在 python 中编写的 CPU 开发一个汇编程序。 I want to be able to store programs as binary files, and I'd like to be able to write simple text based programs.我希望能够将程序存储为二进制文件，并且我希望能够编写简单的基于文本的程序。 I have this example text file:我有这个示例文本文件：
LDA 0x1020
STA 0x1030
I want my program to use this dictionary我希望我的程序使用这本词典
opcodes = {
"BRK": 0x01,
"RFG": 0x02,
"LFG": 0x03,
"JMP": 0x10,
"JMC": 0x11,
"JMZ": 0x12,
"JNZ": 0x13,
"JEQ": 0x14,
"JNE": 0x15,
"JPG": 0x16,
"JPL": 0x17,
"JSR": 0x18,
"RSR": 0x19,
"ADE": 0x20,
"ADI": 0x21,
"AAB": 0x22,
"AAX": 0x23,
"AAY": 0x24,
"ABX": 0x25,
"ABY": 0x26,
"AXY": 0x27,
"INC": 0x28,
"INB": 0x29,
"INX": 0x2A,
"INY": 0x2B,
"SUE": 0x2C,
"SUI": 0x2D,
"SAB": 0x2E,
"SAX": 0x2F,
"SAY": 0x30,
"SBX": 0x31,
"SBY": 0x32,
"SXY": 0x33,
"DEC": 0x34,
"DEB": 0x35,
"DEX": 0x36,
"DEY": 0x37,
"BSL": 0x38,
"BSR": 0x39,
"LDI": 0x40,
"LDA": 0x41,
"LIB": 0x42,
"LDB": 0x43,
"LIX": 0x44,
"LDX": 0x45,
"LIY": 0x46,
"LDY": 0x47,
"TAB": 0x48,
"TAX": 0x49,
"TAY": 0x4A,
"TBA": 0x4B,
"TBX": 0x4C,
"TBY": 0x4D,
"TXA": 0x4E,
"TXB": 0x4F,
"TXY": 0x50,
"TYA": 0x51,
"TYB": 0x52,
"TYX": 0x53,
"STA": 0x54,
"STB": 0x55,
"STX": 0x56,
"STY": 0x57,
"SCB": 0x58,
"SCX": 0x59,
"SCY": 0x5A,
"CAB": 0x60,
"CAX": 0x61,
"CAY": 0x62,
"CBA": 0x63,
"CBX": 0x64,
"CBY": 0x65,
"CXA": 0x66,
"CXB": 0x67,
"CXY": 0x68,
"CYA": 0x69,
"CYB": 0x6A,
"CYX": 0x6B
} }
To convert the text into a binary file the exact output should be: 0x0041, 0x1020, 0x0054, 0x1030.要将文本转换为二进制文件，确切的 output 应为：0x0041、0x1020、0x0054、0x1030。 What would be the best way to get this output.获得此 output 的最佳方法是什么。
1 个解决方案
解决方案1
1 已采纳 2022-09-03 15:59:58
You could do it like this but you may have to adjust for byte ordering:你可以这样做，但你可能需要调整字节顺序：
from sys import byteorder
opcodes = {
"BRK": 0x01,
"RFG": 0x02,
"LFG": 0x03,
"JMP": 0x10,
"JMC": 0x11,
"JMZ": 0x12,
"JNZ": 0x13,
"JEQ": 0x14,
"JNE": 0x15,
"JPG": 0x16,
"JPL": 0x17,
"JSR": 0x18,
"RSR": 0x19,
"ADE": 0x20,
"ADI": 0x21,
"AAB": 0x22,
"AAX": 0x23,
"AAY": 0x24,
"ABX": 0x25,
"ABY": 0x26,
"AXY": 0x27,
"INC": 0x28,
"INB": 0x29,
"INX": 0x2A,
"INY": 0x2B,
"SUE": 0x2C,
"SUI": 0x2D,
"SAB": 0x2E,
"SAX": 0x2F,
"SAY": 0x30,
"SBX": 0x31,
"SBY": 0x32,
"SXY": 0x33,
"DEC": 0x34,
"DEB": 0x35,
"DEX": 0x36,
"DEY": 0x37,
"BSL": 0x38,
"BSR": 0x39,
"LDI": 0x40,
"LDA": 0x41,
"LIB": 0x42,
"LDB": 0x43,
"LIX": 0x44,
"LDX": 0x45,
"LIY": 0x46,
"LDY": 0x47,
"TAB": 0x48,
"TAX": 0x49,
"TAY": 0x4A,
"TBA": 0x4B,
"TBX": 0x4C,
"TBY": 0x4D,
"TXA": 0x4E,
"TXB": 0x4F,
"TXY": 0x50,
"TYA": 0x51,
"TYB": 0x52,
"TYX": 0x53,
"STA": 0x54,
"STB": 0x55,
"STX": 0x56,
"STY": 0x57,
"SCB": 0x58,
"SCX": 0x59,
"SCY": 0x5A,
"CAB": 0x60,
"CAX": 0x61,
"CAY": 0x62,
"CBA": 0x63,
"CBX": 0x64,
"CBY": 0x65,
"CXA": 0x66,
"CXB": 0x67,
"CXY": 0x68,
"CYA": 0x69,
"CYB": 0x6A,
"CYX": 0x6B}
with open('infile.txt') as infile, open('outfile.bin', 'wb') as outfile:
for line in infile:
i, c = line.split()
outfile.write(opcodes[i].to_bytes(2, byteorder=byteorder))
outfile.write(int(c, 16).to_bytes(2, byteorder=byteorder))
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.