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Refactored some code in Arm9Patcher

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This commit is contained in:
Gericom
2025-12-07 11:52:53 +01:00
parent 656f696411
commit dd062bb4fa
2 changed files with 178 additions and 144 deletions
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119
arm9/source/Arm9Patcher.cpp
View File

@@ -32,9 +32,9 @@
typedef void (*uncompress_func_t)(void* compressedEnd);
static const u32 sMiiUncompressBackwardPatternOld[] = { 0xE3500000, 0x0A000025, 0xE92D00F0, 0xE9100006 }; // mkds beta; version 0x2012774
static const u32 sMiiUncompressBackwardPatternOld2[] = { 0xE3500000, 0x0A00002B, 0xE92D00F0, 0xE9100006 }; // asterix & obelix xxl 2; version 0x3017531
static const u32 sMiiUncompressBackwardPattern[] = { 0xE3500000, 0x0A000027, 0xE92D00F0, 0xE9100006 }; // mkds
static const u32 sMiiUncompressBackwardPatternOld[] = { 0xE3500000, 0x0A000025, 0xE92D00F0, 0xE9100006 };
static const u32 sMiiUncompressBackwardPatternOld2[] = { 0xE3500000, 0x0A00002B, 0xE92D00F0, 0xE9100006 };
static const u32 sMiiUncompressBackwardPattern[] = { 0xE3500000, 0x0A000027, 0xE92D00F0, 0xE9100006 };
static const u32 sMiiUncompressBackwardPatternHybrid[] = { 0xE3500000, 0x0A000029, 0xE92D01F0, 0xE9100006 };
void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApListEntry* apListEntry,
@@ -42,13 +42,11 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
{
auto romHeader = (const nds_header_ntr_t*)TWL_SHARED_MEMORY->ntrSharedMem.romHeader;
auto twlRomHeader = (const nds_header_twl_t*)TWL_SHARED_MEMORY->twlRomHeader;
ModuleParamsLocator moduleParamsLocator;
auto moduleParams = moduleParamsLocator.FindModuleParams(romHeader);
u32 arm9Size = romHeader->arm9Size;
u32 arm9iSize = romHeader->IsTwlRom() ? twlRomHeader->arm9iSize : 0;
SdkVersion sdkVersion = moduleParams ? moduleParams->sdkVersion : 0u;
u32 compressedEnd = 0;
PatchCollection patchCollection;
auto moduleParams = ModuleParamsLocator().FindModuleParams(romHeader);
SdkVersion sdkVersion = moduleParams ? moduleParams->sdkVersion : 0u;
if (moduleParams)
{
LOG_DEBUG("Module params found at 0x%p\n", moduleParams);
@@ -56,18 +54,7 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
const u32* miiUncompressBackward = nullptr;
if (moduleParams->compressedEnd)
{
const u32* miiUncompressBackwardPattern;
if (sdkVersion <= 0x2017532)
miiUncompressBackwardPattern = sMiiUncompressBackwardPatternOld;
else
miiUncompressBackwardPattern = sMiiUncompressBackwardPattern;
miiUncompressBackward = fastSearch16((const u32*)romHeader->arm9LoadAddress, 0x1000, miiUncompressBackwardPattern);
if (!sdkVersion.IsTwlSdk() && !miiUncompressBackward)
miiUncompressBackward = fastSearch16((const u32*)romHeader->arm9LoadAddress, 0x1000, sMiiUncompressBackwardPatternOld2);
if (sdkVersion.IsTwlSdk() && !miiUncompressBackward)
miiUncompressBackward = fastSearch16((const u32*)romHeader->arm9LoadAddress, 0x1000, sMiiUncompressBackwardPatternHybrid);
miiUncompressBackward = FindMIiUncompressBackward(romHeader->arm9LoadAddress, sdkVersion);
if (miiUncompressBackward)
{
arm9Size = moduleParams->compressedEnd + *(u32*)(moduleParams->compressedEnd - 4) - romHeader->arm9LoadAddress;
@@ -85,9 +72,8 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
{
auto arm9iModuleParams = (module_params_twl_t*)(romHeader->arm9LoadAddress + twlRomHeader->arm9iModuleParamsAddress);
if (arm9iModuleParams->magicBigEndian == MODULE_PARAMS_TWL_MAGIC_BE &&
arm9iModuleParams->magicLittleEndian == MODULE_PARAMS_TWL_MAGIC_LE)
{
if (arm9iModuleParams->compressedEnd)
arm9iModuleParams->magicLittleEndian == MODULE_PARAMS_TWL_MAGIC_LE &&
arm9iModuleParams->compressedEnd != 0)
{
LOG_DEBUG("Compressed arm9i found\n");
if (miiUncompressBackward)
@@ -104,7 +90,6 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
}
}
}
}
else
{
LOG_DEBUG("Module params not found!\n");
@@ -125,6 +110,7 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
romHeader->gameCode,
loaderPlatform
};
PatchCollection patchCollection;
if (sdkVersion != 0)
{
if (*(vu32*)0x02FFF00C == GAMECODE("ADAJ") &&
@@ -180,13 +166,56 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
}
patchCollection.AddPatch(new CardiReadRomIdCorePatch());
patchCollection.AddPatch(new OSResetSystemPatch(loaderInfo));
AddGamePatches(patchCollection, romHeader->gameCode, apListEntry);
if (moduleParams && compressedEnd != 0)
{
AddRestoreCompressedEndPatch(
patchContext,
romHeader->arm9AutoLoadDoneHookAddress,
&moduleParams->compressedEnd,
compressedEnd);
}
}
if (!patchCollection.TryPerformPatches(patchContext))
{
ErrorDisplay().PrintError("Failed to apply arm9 patches.");
}
dc_flushAll();
dc_drainWriteBuffer();
ic_invalidateAll();
}
const u32* Arm9Patcher::FindMIiUncompressBackward(u32 arm9LoadAddress, SdkVersion sdkVersion) const
{
const u32* miiUncompressBackwardPattern;
if (sdkVersion <= 0x2017532)
{
miiUncompressBackwardPattern = sMiiUncompressBackwardPatternOld;
}
else
{
miiUncompressBackwardPattern = sMiiUncompressBackwardPattern;
}
const u32* miiUncompressBackward = fastSearch16((const u32*)arm9LoadAddress, 0x1000, miiUncompressBackwardPattern);
if (!sdkVersion.IsTwlSdk() && !miiUncompressBackward)
{
miiUncompressBackward = fastSearch16((const u32*)arm9LoadAddress, 0x1000, sMiiUncompressBackwardPatternOld2);
}
if (sdkVersion.IsTwlSdk() && !miiUncompressBackward)
{
miiUncompressBackward = fastSearch16((const u32*)arm9LoadAddress, 0x1000, sMiiUncompressBackwardPatternHybrid);
}
return miiUncompressBackward;
}
void Arm9Patcher::AddGamePatches(PatchCollection& patchCollection, u32 gameCode, const ApListEntry* apListEntry) const
{
OverlayHookPatch* overlayHookPatch;
if (romHeader->gameCode == GAMECODE("BO5P") ||
romHeader->gameCode == GAMECODE("BO5E") ||
romHeader->gameCode == GAMECODE("BO5J"))
if (gameCode == GAMECODE("BO5P") || gameCode == GAMECODE("BO5E") || gameCode == GAMECODE("BO5J"))
{
overlayHookPatch = new GoldenSunDarkDawnOverlayHookPatch();
overlayHookPatch->AddOverlayPatch(new DSProtectOverlayPatch(334, 0, DSProtectVersion::v2_01, ~0u));
@@ -196,6 +225,17 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
{
overlayHookPatch = new FsStartOverlayHookPatch();
if (apListEntry)
{
AddDSProtectPatches(patchCollection, overlayHookPatch, apListEntry);
}
AddGameSpecificPatches(patchCollection, overlayHookPatch, gameCode);
}
patchCollection.AddPatch(overlayHookPatch);
}
void Arm9Patcher::AddDSProtectPatches(
PatchCollection& patchCollection, OverlayHookPatch* overlayHookPatch, const ApListEntry* apListEntry) const
{
u32 regularOverlayId = apListEntry->GetRegularOverlayId();
if (regularOverlayId != AP_LIST_OVERLAY_ID_INVALID)
@@ -230,7 +270,11 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
}
}
}
switch (romHeader->gameCode)
void Arm9Patcher::AddGameSpecificPatches(
PatchCollection& patchCollection, OverlayHookPatch* overlayHookPatch, u32 gameCode) const
{
switch (gameCode)
{
// Pokemon HeartGold & SoulSilver
case GAMECODE("IPGD"):
@@ -291,25 +335,6 @@ void Arm9Patcher::ApplyPatches(const LoaderPlatform* loaderPlatform, const ApLis
}
}
}
patchCollection.AddPatch(overlayHookPatch);
if (moduleParams && compressedEnd != 0)
{
AddRestoreCompressedEndPatch(
patchContext,
romHeader->arm9AutoLoadDoneHookAddress,
&moduleParams->compressedEnd,
compressedEnd);
}
}
if (!patchCollection.TryPerformPatches(patchContext))
{
ErrorDisplay().PrintError("Failed to apply arm9 patches.");
}
dc_flushAll();
dc_drainWriteBuffer();
ic_invalidateAll();
}
void Arm9Patcher::AddRestoreCompressedEndPatch(PatchContext& patchContext,
u32 arm9AutoLoadDoneHookAddress, u32* moduleParamsCompressedEnd, u32 originalCompressedEndValue) const

9
arm9/source/Arm9Patcher.h
View File

@@ -1,9 +1,12 @@
#pragma once
#include "LoaderInfo.h"
#include "SdkVersion.h"
class ApListEntry;
class LoaderPlatform;
class PatchContext;
class PatchCollection;
class OverlayHookPatch;
/// @brief Class for patching the arm9 of retail roms.
class Arm9Patcher
@@ -18,6 +21,12 @@ public:
bool isCloneBootRom, const loader_info_t* loaderInfo) const;
private:
const u32* FindMIiUncompressBackward(u32 arm9LoadAddress, SdkVersion sdkVersion) const;
void AddGamePatches(PatchCollection& patchCollection, u32 gameCode, const ApListEntry* apListEntry) const;
void AddDSProtectPatches(PatchCollection& patchCollection,
OverlayHookPatch* overlayHookPatch, const ApListEntry* apListEntry) const;
void AddGameSpecificPatches(PatchCollection& patchCollection,
OverlayHookPatch* overlayHookPatch, u32 gameCode) const;
void AddRestoreCompressedEndPatch(PatchContext& patchContext,
u32 arm9AutoLoadDoneHookAddress, u32* moduleParamsCompressedEnd, u32 originalCompressedEndValue) const;
u32 GetAvailableParentSectionSpace() const;