mirror of
https://github.com/LNH-team/pico-loader.git
synced 2026-06-02 01:06:50 +02:00
62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
#include "common.h"
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#include "gameCode.h"
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#include "patches/platform/LoaderPlatform.h"
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#include "patches/SaveOffsetToSdSectorAsm.h"
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#include "ReadNandSaveAsm.h"
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#include "WriteNandSaveAsm.h"
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#include "NintendoDSGuideNandSavePatch.h"
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// This code was based on nds-bootstrap:
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// https://github.com/DS-Homebrew/nds-bootstrap/blob/89f27d1392a68436695d0050992ee84258ef41bc/retail/bootloader/source/arm7/patch_arm9.c#L2531
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bool NintendoDSGuideNandSavePatch::FindPatchTarget(PatchContext& patchContext)
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{
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return true;
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}
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void NintendoDSGuideNandSavePatch::ApplyPatch(PatchContext& patchContext)
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{
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auto sectorRemapPatchCode = patchContext.GetPatchCodeCollection().AddUniquePatchCode<SaveOffsetToSdSectorPatchCode>
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(
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patchContext.GetPatchHeap(),
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SHARED_SAVE_FILE_INFO
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);
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auto loaderPlatform = patchContext.GetLoaderPlatform();
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auto readNandSavePatchCode = patchContext.GetPatchCodeCollection().AddUniquePatchCode<ReadNandSavePatchCode>
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(
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patchContext.GetPatchHeap(),
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sectorRemapPatchCode,
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loaderPlatform->CreateSdReadPatchCode(patchContext.GetPatchCodeCollection(), patchContext.GetPatchHeap())
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);
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auto writeNandSavePatchCode = patchContext.GetPatchCodeCollection().AddUniquePatchCode<WriteNandSavePatchCode>
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(
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patchContext.GetPatchHeap(),
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sectorRemapPatchCode,
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loaderPlatform->CreateSdWritePatchCode(patchContext.GetPatchCodeCollection(), patchContext.GetPatchHeap())
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);
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// u32 nandInit(void* data)
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*(u32*)0x02009298 = 0xE3A00001; // mov r0, #1
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*(u32*)0x0200929C = 0xE12FFF1E; // bx lr
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// u32 nandResume(void)
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*(u32*)0x020098C8 = 0xE3A00000; // mov r0, #0
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*(u32*)0x020098CC = 0xE12FFF1E; // bx lr
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// u32 nandState(void)
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*(u32*)0x02009AA8 = 0xE1A00000; //nop
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*(u32*)0x02009AB0 = 0x06600000;
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// u32 nandError(void)
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*(u32*)0x02009AB4 = 0xE3A00000; // mov r0, #0
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*(u32*)0x02009AB8 = 0xE12FFF1E; // bx lr
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// u32 nandWrite(const void* memory, u32 flash, u32 size, u32 dmaChannel)
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*(u32*)0x0200961C = 0xE51FF004; // ldr pc,= patch_writeNandSave
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*(u32*)0x02009620 = (u32)writeNandSavePatchCode->GetWriteNandSaveFunction();
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// u32 nandRead(void* memory, u32 flash, u32 size, u32 dmaChannel)
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*(u32*)0x02009940 = 0xE51FF004; // ldr pc,= patch_readNandSave
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*(u32*)0x02009944 = (u32)readNandSavePatchCode->GetReadNandSaveFunction();
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}
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