feat: implement cosf, time, ctype tables, tracked heap access, IL2CPP lookup ABI paths (#542)

* fix: add Messenger CRT and AGC compatibility shims * fix: keep Messenger IL2CPP bootstrap on HLE shims * Fix Messenger compatibility ABI handling * Make IL2CPP ABI regression tests portable
2026-07-31 23:19:44 +08:00 · 2026-07-23 08:35:59 -04:00
parent 7b950166d7
commit 2764aaab3f
8 changed files with 570 additions and 20 deletions
@@ -0,0 +1,82 @@
+// Copyright (C) 2026 SharpEmu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+using System;
+using SharpEmu.HLE;
+
+namespace SharpEmu.Libs.Messenger;
+
+/// <summary>Small Unity/libc compatibility shims exercised by The Messenger.</summary>
+public static class MessengerCompatExports
+{
+    [SysAbiExport(Nid = "wLlFkwG9UcQ", ExportName = "time", Target = Generation.Gen4 | Generation.Gen5, LibraryName = "libc")]
+    public static int Time(CpuContext ctx)
+    {
+        var seconds = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
+        var output = ctx[CpuRegister.Rdi];
+        if (output != 0 && !ctx.TryWriteUInt64(output, unchecked((ulong)seconds)))
+        {
+            ctx[CpuRegister.Rax] = 0;
+            return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
+        }
+
+        ctx[CpuRegister.Rax] = unchecked((ulong)seconds);
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
+
+    [SysAbiExport(Nid = "M4YYbSFfJ8g", ExportName = "setenv", Target = Generation.Gen4 | Generation.Gen5, LibraryName = "libc")]
+    public static int Setenv(CpuContext ctx)
+    {
+        ctx[CpuRegister.Rax] = 0;
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
+
+    [SysAbiExport(Nid = "-P6FNMzk2Kc", ExportName = "cosf", Target = Generation.Gen4 | Generation.Gen5, LibraryName = "libc")]
+    public static int Cosf(CpuContext ctx)
+    {
+        // AMD64 passes a scalar float in XMM0 and returns it in XMM0. RDI is
+        // unrelated caller state and must not be interpreted as the argument.
+        ctx.GetXmmRegister(0, out var low, out var high);
+        var value = BitConverter.Int32BitsToSingle(unchecked((int)low));
+        var resultBits = unchecked((uint)BitConverter.SingleToInt32Bits(MathF.Cos(value)));
+        ctx.SetXmmRegister(0, (low & 0xFFFFFFFF00000000UL) | resultBits, high);
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
+
+    [SysAbiExport(Nid = "YQ0navp+YIc", ExportName = "puts", Target = Generation.Gen4 | Generation.Gen5, LibraryName = "libc")]
+    public static int Puts(CpuContext ctx)
+    {
+        ctx[CpuRegister.Rax] = 0;
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
+
+    [SysAbiExport(Nid = "KuOuD58hqn4", ExportName = "malloc_stats_fast", Target = Generation.Gen4 | Generation.Gen5, LibraryName = "libc")]
+    public static int MallocStatsFast(CpuContext ctx)
+    {
+        ctx[CpuRegister.Rax] = 0;
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
+
+    [SysAbiExport(Nid = "-pnj3-7a6QA", ExportName = "unity_mono_set_user_malloc_mutex", Target = Generation.Gen4 | Generation.Gen5, LibraryName = "libunity")]
+    public static int UnityMonoSetMallocMutex(CpuContext ctx)
+    {
+        ctx[CpuRegister.Rax] = 0;
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
+
+    [SysAbiExport(Nid = "35NoyMOtYpE", ExportName = "SetDataFolder", Target = Generation.Gen4 | Generation.Gen5, LibraryName = "libunity")]
+    public static int SetDataFolder(CpuContext ctx)
+    {
+        ctx[CpuRegister.Rax] = 0;
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
+
+#pragma warning disable SHEM006
+    [SysAbiExport(Nid = "cJ2Y4E-t258", ExportName = "il2cpp_api_register_symbol", Target = Generation.Gen4 | Generation.Gen5, LibraryName = "libil2cpp")]
+    public static int Il2CppRegisterSymbol(CpuContext ctx)
+    {
+        ctx[CpuRegister.Rax] = 0;
+        return (int)OrbisGen2Result.ORBIS_GEN2_OK;
+    }
+}
+#pragma warning restore SHEM006