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Working on a BSD-Style syscall wrapper.

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Creeper Lv
2025-08-01 00:06:32 +10:00
parent 0cf3ba9937
commit 269a2b51be
7 changed files with 115 additions and 3 deletions
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53
src/SVM.Advanced/BSDStyleVM/BSDLikeWrapper.cs Normal file
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@@ -0,0 +1,53 @@
using SVM.Core;
using System;
using System.Collections.Generic;
using System.IO;
namespace SVM.Advanced.BSDStyleVM
{
public class BSDLikeWrapper
{
public SimpleVirtualMachine baseVM;
public Dictionary<int, FileDescripter> FDs = new Dictionary<int, FileDescripter>();
public BSDLikeWrapper(SimpleVirtualMachine baseVM)
{
this.baseVM = baseVM;
baseVM.AdditionalData = this;
baseVM.Config = BSDConfig.CreateConfig();
}
}
public class BSDConfig
{
public static SVMConfig CreateConfig()
{
var config = new SVMConfig();
config.PCRegisterID = 1;
config.SPRegisterID = 2;
SetupSyscall(config);
return config;
}
public static void SetupSyscall(SVMConfig config)
{
config.FuncCalls.Add(1, BSDStyleFunctions0.__exit);
}
}
public static class BSDStyleFunctions0
{
public static void __exit(SimpleVirtualMachine machine)
{
var status = machine.registers.GetData<int>(10);
Console.WriteLine("Bye-bye!");
Environment.Exit(status);
}
}
public class FileDescripter
{
public Stream stream;
public FileDescripter(Stream stream)
{
this.stream = stream;
}
}
}

12
src/SVM.Advanced/SVM.Advanced.csproj Normal file
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@@ -0,0 +1,12 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.1</TargetFramework>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\SVM.Core\SVM.Core.csproj" />
</ItemGroup>
</Project>

16
src/SVM.Assembler/ISA.xml
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@@ -73,5 +73,21 @@
</InstructionParameter>
</Parameters>
</InstructionDefinition>
<InstructionDefinition PrimaryInstruction="System" InstructionCount="1">
<Aliases>
<Alias Name="system"/>
<Alias Name="sys"/>
<Alias Name="syscall"/>
</Aliases>
<Parameters>
<InstructionParameter>
<MatchingItems>
<Item Id="Number"/>
<Item Id="Word"/>
</MatchingItems>
<ExpectedValue Type="Int32" Pos="4" Converter="Integer32" />
</InstructionParameter>
</Parameters>
</InstructionDefinition>
</Definitions>
</ISARoot>

17
src/SVM.Core/SimpleVirtualMachine.cs
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@@ -25,6 +25,8 @@ namespace SVM.Core
public MState MachineState;
public SVMProgram* Program = null;
public static uint InitGPMemorySize = 696320;
public Object? AdditionalData = null;
public ErrorIDs ErrorIDs = new ErrorIDs();
public void Init(uint StackSize = 1024 * 1024, uint RegisterSize = 512, uint GPMemory = uint.MaxValue)
{
registers.Init(RegisterSize);
@@ -181,11 +183,19 @@ namespace SVM.Core
case PrimaryInstruction.System:
if (Config != null)
{
var target = Instruction.GetData<uint>(1);
var target = Instruction.GetData<uint>(4);
if (Config.FuncCalls.TryGetValue(target, out var func))
{
func(this);
}
else
{
registers.SetData((int)ErrorIDOffset,ErrorIDs.SyscallCallNotExist);
}
}
else
{
registers.SetData((int)ErrorIDOffset, ErrorIDs.SyscallCallNotExist);
}
break;
case PrimaryInstruction.SIMD:
@@ -359,6 +369,11 @@ namespace SVM.Core
/// </summary>
public uint EIDRegisterID;
}
public class ErrorIDs
{
public int SyscallCallNotExist = 1;
public int MAX_ERROR_ID = short.MaxValue;
}
public delegate void FuncCall(SimpleVirtualMachine machine);
[StructLayout(LayoutKind.Sequential)]
public struct MState

5
src/SVM.Standalone/Program.cs
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@@ -1,4 +1,5 @@
using SVM.Core;
using SVM.Advanced.BSDStyleVM;
using SVM.Core;
namespace SVM.Standalone;
@@ -25,10 +26,10 @@ class Program
{
Program = program
};
BSDLikeWrapper wrapper = new BSDLikeWrapper(svm);
svm.Init();
while (!svm.isReachBinaryEnd())
{
Console.WriteLine("Step");
svm.Step();
}
}

1
src/SVM.Standalone/SVM.Standalone.csproj
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@@ -1,6 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">
<ItemGroup>
<ProjectReference Include="..\SVM.Advanced\SVM.Advanced.csproj" />
<ProjectReference Include="..\SVM.Core\SVM.Core.csproj" />
</ItemGroup>

14
src/SVM.sln
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@@ -11,6 +11,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SVM.Assembler.Core", "SVM.A
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SVM.Assembler", "SVM.Assembler\SVM.Assembler.csproj", "{E2B82455-3947-4C11-82D0-178E8D8C3D64}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SVM.Advanced", "SVM.Advanced\SVM.Advanced.csproj", "{F9F2F699-49F7-4427-BA22-B444DD6259FD}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@@ -69,6 +71,18 @@ Global
{E2B82455-3947-4C11-82D0-178E8D8C3D64}.Release|x64.Build.0 = Release|Any CPU
{E2B82455-3947-4C11-82D0-178E8D8C3D64}.Release|x86.ActiveCfg = Release|Any CPU
{E2B82455-3947-4C11-82D0-178E8D8C3D64}.Release|x86.Build.0 = Release|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Debug|Any CPU.Build.0 = Debug|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Debug|x64.ActiveCfg = Debug|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Debug|x64.Build.0 = Debug|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Debug|x86.ActiveCfg = Debug|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Debug|x86.Build.0 = Debug|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Release|Any CPU.ActiveCfg = Release|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Release|Any CPU.Build.0 = Release|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Release|x64.ActiveCfg = Release|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Release|x64.Build.0 = Release|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Release|x86.ActiveCfg = Release|Any CPU
{F9F2F699-49F7-4427-BA22-B444DD6259FD}.Release|x86.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE