实现用户态程序

2026-04-21 19:24:00 +00:00 · 2026-03-27 21:32:18 +08:00
parent 7a7d44e9d8
commit 0988f4c820
13 changed files with 293 additions and 5 deletions
--- a/shell/Commands/Script/RunbinCommand.cs
+++ b/shell/Commands/Script/RunbinCommand.cs
@@ -0,0 +1,105 @@
+using Cosmos.System.Emulation;
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+namespace CMLeonOS.Commands.Script
+{
+    public static class RunbinCommand
+    {
+        public static void Execute(string args, CMLeonOS.FileSystem fileSystem, Action<string> showError)
+        {
+            string[] parts = args.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
+            if (parts.Length < 1)
+            {
+                var commandInfos = new List<UsageGenerator.CommandInfo>
+                {
+                    new UsageGenerator.CommandInfo
+                    {
+                        Command = "<file>",
+                        Description = "Run a MSE executable binary file",
+                        IsOptional = false
+                    }
+                };
+                showError(UsageGenerator.GenerateUsage("runbin", commandInfos));
+                return;
+            }
+
+            string inputPath = parts[0];
+            string fullPath = fileSystem.GetFullPath(inputPath);
+
+            if (!File.Exists(fullPath))
+            {
+                showError($"Error: File not found: {fullPath}");
+                return;
+            }
+
+            try
+            {
+                byte[] data = File.ReadAllBytes(fullPath);
+                if (data == null || data.Length == 0)
+                {
+                    showError("Error: Executable file is empty.");
+                    return;
+                }
+
+                FGMSECInstructionSet set = new FGMSECInstructionSet();
+                Executable exec = new Executable(data, set, 3);
+
+                AddDefaultSystemCalls(exec);
+                exec.ReadData();
+
+                while (exec.running)
+                {
+                    exec.NextInstruction();
+                }
+            }
+            catch (Exception ex)
+            {
+                showError($"runbin error: {ex.Message}");
+            }
+        }
+
+        private static void AddDefaultSystemCalls(Executable exec)
+        {
+            // syscall 0: print null-terminated string at address in R3
+            exec.AddSystemCall((Executable caller) =>
+            {
+                int addr = (int)((FGMSECInstructionSet)caller.usingInstructionSet).CPU.GetRegData(3);
+                char c = (char)caller.Memory.ReadChar(addr);
+                while (c != 0)
+                {
+                    Console.Write(c);
+                    addr++;
+                    c = (char)caller.Memory.ReadChar(addr);
+                }
+            });
+
+            // syscall 1: read line and return address in R3
+            exec.AddSystemCall((Executable caller) =>
+            {
+                string input = Console.ReadLine() ?? string.Empty;
+                input += '\0';
+                int addr = caller.Memory.Data.Count;
+                int caddr = 0;
+                for (int i = 0; i < input.Length; i++)
+                {
+                    char c = input[i];
+                    if (!caller.Memory.AddChar(c))
+                    {
+                        caller.Memory.WriteChar(caddr, c);
+                        addr = 0;
+                        caddr++;
+                    }
+                }
+                ((FGMSECInstructionSet)caller.usingInstructionSet).CPU.SetRegData(3, (uint)addr);
+            });
+
+            // syscall 2: clear console
+            exec.AddSystemCall((Executable caller) =>
+            {
+                Console.Clear();
+            });
+        }
+    }
+}