Initial commit

arm9/source/patches/arm7/DisableArm7WramClearPatch.cpp

@@ -0,0 +1,39 @@
+#include "common.h"
+#include "../PatchContext.h"
+#include "sharedMemory.h"
+#include "ndsHeader.h"
+#include "DisableArm7WramClearPatch.h"
+
+bool DisableArm7WramClearPatch::FindPatchTarget(PatchContext& patchContext)
+{
+    auto romHeader = (const nds_header_ntr_t*)TWL_SHARED_MEMORY->ntrSharedMem.romHeader;
+    _clearEndPool = nullptr;
+    for (u32 i = 0; i < 0x100; i += 4)
+    {
+        u32* ptr = (u32*)(romHeader->arm7LoadAddress + i);
+        if (*ptr == 0x380FF00)
+        {
+            _clearEndPool = ptr;
+            break;
+        }
+    }
+
+    if (_clearEndPool)
+    {
+        LOG_DEBUG("Arm7 wram clear end pool value found at 0x%p\n", _clearEndPool);
+    }
+    else
+    {
+        LOG_WARNING("Arm7 wram clear end pool value not found\n");
+    }
+
+    return _clearEndPool != nullptr;
+}
+
+void DisableArm7WramClearPatch::ApplyPatch(PatchContext& patchContext)
+{
+    if (!_clearEndPool)
+        return;
+
+    *_clearEndPool = 0;
+}