[Tests/HLE] Cover APR resolve, stat, and streaming flow (#272)

2026-07-22 19:06:15 +08:00 · 2026-07-16 18:57:45 +02:00
parent 33f96252da
commit 2db1fae282
1 changed files with 99 additions and 0 deletions
@@ -0,0 +1,99 @@
+// Copyright (C) 2026 SharpEmu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+using SharpEmu.HLE;
+using SharpEmu.Libs.Ampr;
+using SharpEmu.Libs.Kernel;
+using System.Buffers.Binary;
+using Xunit;
+
+namespace SharpEmu.Libs.Tests.Ampr;
+
+public sealed class AprStreamingContractTests
+{
+    [Fact]
+    public void ResolveStatAndReadFile_UsesSharedAprFileId()
+    {
+        const ulong memoryBase = 0x1_0000_0000;
+        const ulong pathListAddress = memoryBase + 0x100;
+        const ulong pathAddress = memoryBase + 0x200;
+        const ulong idsAddress = memoryBase + 0x800;
+        const ulong statAddress = memoryBase + 0x900;
+        const ulong commandBufferAddress = memoryBase + 0x1000;
+        const ulong recordBufferAddress = memoryBase + 0x1100;
+        const ulong destinationAddress = memoryBase + 0x2000;
+        const ulong stackAddress = memoryBase + 0x3000;
+        byte[] fileContents = [10, 11, 12, 13, 14, 15, 16, 17];
+        var hostPath = Path.GetTempFileName();
+
+        try
+        {
+            File.WriteAllBytes(hostPath, fileContents);
+            var memory = new FakeCpuMemory(memoryBase, 0x4000);
+            var context = new CpuContext(memory, Generation.Gen5);
+            memory.WriteCString(pathAddress, hostPath);
+            WriteUInt64(memory, pathListAddress, pathAddress);
+
+            context[CpuRegister.Rdi] = pathListAddress;
+            context[CpuRegister.Rsi] = 1;
+            context[CpuRegister.Rdx] = idsAddress;
+
+            Assert.Equal(0, KernelMemoryCompatExports.KernelAprResolveFilepathsToIds(context));
+
+            Span<byte> idBytes = stackalloc byte[sizeof(uint)];
+            Assert.True(memory.TryRead(idsAddress, idBytes));
+            var fileId = BinaryPrimitives.ReadUInt32LittleEndian(idBytes);
+            Assert.NotEqual(uint.MaxValue, fileId);
+
+            context[CpuRegister.Rdi] = fileId;
+            context[CpuRegister.Rsi] = statAddress;
+
+            Assert.Equal(0, KernelMemoryCompatExports.KernelAprGetFileStat(context));
+
+            Span<byte> stat = stackalloc byte[120];
+            Assert.True(memory.TryRead(statAddress, stat));
+            Assert.Equal(fileContents.Length, BinaryPrimitives.ReadInt64LittleEndian(stat[72..]));
+
+            context[CpuRegister.Rdi] = commandBufferAddress;
+            context[CpuRegister.Rsi] = recordBufferAddress;
+            context[CpuRegister.Rdx] = 0x100;
+
+            Assert.Equal(0, AmprExports.CommandBufferConstructor(context));
+
+            const ulong readOffset = 2;
+            const ulong readSize = 4;
+            WriteUInt64(memory, stackAddress + sizeof(ulong), readOffset);
+            context[CpuRegister.Rsp] = stackAddress;
+            context[CpuRegister.Rdi] = commandBufferAddress;
+            context[CpuRegister.Rcx] = fileId;
+            context[CpuRegister.R8] = destinationAddress;
+            context[CpuRegister.R9] = readSize;
+
+            Assert.Equal(0, AmprExports.AprCommandBufferReadFile(context));
+
+            Span<byte> destination = stackalloc byte[(int)readSize];
+            Assert.True(memory.TryRead(destinationAddress, destination));
+            Assert.Equal(fileContents.AsSpan((int)readOffset, (int)readSize), destination);
+
+            Span<byte> record = stackalloc byte[0x30];
+            Assert.True(memory.TryRead(recordBufferAddress, record));
+            Assert.Equal(1U, BinaryPrimitives.ReadUInt32LittleEndian(record));
+            Assert.Equal(fileId, BinaryPrimitives.ReadUInt32LittleEndian(record[0x04..]));
+            Assert.Equal(destinationAddress, BinaryPrimitives.ReadUInt64LittleEndian(record[0x08..]));
+            Assert.Equal(readSize, BinaryPrimitives.ReadUInt64LittleEndian(record[0x10..]));
+            Assert.Equal(readOffset, BinaryPrimitives.ReadUInt64LittleEndian(record[0x18..]));
+            Assert.Equal(readSize, BinaryPrimitives.ReadUInt64LittleEndian(record[0x20..]));
+        }
+        finally
+        {
+            File.Delete(hostPath);
+        }
+    }
+
+    private static void WriteUInt64(FakeCpuMemory memory, ulong address, ulong value)
+    {
+        Span<byte> bytes = stackalloc byte[sizeof(ulong)];
+        BinaryPrimitives.WriteUInt64LittleEndian(bytes, value);
+        Assert.True(memory.TryWrite(address, bytes));
+    }
+}