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Attempt to fix rom hacks that decompress the arm9, but don't set compressedEnd to zero

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Fixes soulsilver deluxe
This commit is contained in:
Gericom
2026-02-01 11:49:06 +01:00
parent df614fb89f
commit 28bfb3b423
1 changed files with 11 additions and 2 deletions
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11
arm9/source/Arm9Patcher.cpp
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@@ -82,8 +82,17 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
miiUncompressBackward = FindMIiUncompressBackward(romHeader->arm9LoadAddress, sdkVersion);
if (miiUncompressBackward)
{
arm9Size = moduleParams->compressedEnd + *(u32*)(moduleParams->compressedEnd - 4) - romHeader->arm9LoadAddress;
u32 originalBottom = *(u32*)(moduleParams->compressedEnd - 4);
// Some rom hacks decompress the arm9, but don't set compressedEnd to 0.
if (originalBottom < 4 * 1024 * 1024)
{
arm9Size = moduleParams->compressedEnd + originalBottom - romHeader->arm9LoadAddress;
((uncompress_func_t)miiUncompressBackward)((void*)moduleParams->compressedEnd);
}
else
{
LOG_WARNING("Invalid originalBottom value found. Skipping arm9 decompression.\n");
}
compressedEnd = moduleParams->compressedEnd;
moduleParams->compressedEnd = 0;
}