mirror of
https://github.com/melonDS-emu/melonDS.git
synced 2025-07-25 23:29:55 -06:00
Move NDSCart-related global state into objects (#1871)
* Move NDSCart-related global state into objects - RAII will now do the heavy lifting - Mark some methods as const or noexcept * Move GBACart-related global state into objects (#1870) - RAII will now do the heavy lifting - Mark some methods as const or noexcept - Once the `NDS` object is finalized, most of these `assert`s can go away * Make AREngine::RunCheat public (#1872) - I use it directly in melonDS DS to apply single cheats without using ARCodeFile - Before the AREngine refactor I could just redeclare the function in my code - Now I can't
This commit is contained in:
Jesse Talavera-Greenberg
committed by
GitHub
GitHub
parent
3d3e4240a0
commit
88072a02c5
151
src/NDSCart.cpp
151
src/NDSCart.cpp
@ -41,36 +41,12 @@ enum
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// SRAM TODO: emulate write delays???
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u16 SPICnt;
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u32 ROMCnt;
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u8 SPIData;
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u32 SPIDataPos;
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bool SPIHold;
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u8 ROMCommand[8];
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u32 ROMData;
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u8 TransferData[0x4000];
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u32 TransferPos;
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u32 TransferLen;
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u32 TransferDir;
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u8 TransferCmd[8];
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std::unique_ptr<CartCommon> Cart;
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u32 Key1_KeyBuf[0x412];
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u64 Key2_X;
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u64 Key2_Y;
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u32 ByteSwap(u32 val)
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{
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return (val >> 24) | ((val >> 8) & 0xFF00) | ((val << 8) & 0xFF0000) | (val << 24);
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}
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void Key1_Encrypt(u32* data)
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void NDSCartSlot::Key1_Encrypt(u32* data) noexcept
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{
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u32 y = data[0];
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u32 x = data[1];
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@ -91,7 +67,7 @@ void Key1_Encrypt(u32* data)
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data[1] = y ^ Key1_KeyBuf[0x11];
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}
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void Key1_Decrypt(u32* data)
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void NDSCartSlot::Key1_Decrypt(u32* data) noexcept
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{
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u32 y = data[0];
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u32 x = data[1];
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@ -112,7 +88,7 @@ void Key1_Decrypt(u32* data)
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data[1] = y ^ Key1_KeyBuf[0x0];
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}
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void Key1_ApplyKeycode(u32* keycode, u32 mod)
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void NDSCartSlot::Key1_ApplyKeycode(u32* keycode, u32 mod) noexcept
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{
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Key1_Encrypt(&keycode[1]);
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Key1_Encrypt(&keycode[0]);
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@ -131,7 +107,7 @@ void Key1_ApplyKeycode(u32* keycode, u32 mod)
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}
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}
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void Key1_LoadKeyBuf(bool dsi, bool externalBios, u8 *bios, u32 biosLength)
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void NDSCartSlot::Key1_LoadKeyBuf(bool dsi, bool externalBios, u8 *bios, u32 biosLength) noexcept
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{
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if (externalBios)
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{
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@ -146,19 +122,19 @@ void Key1_LoadKeyBuf(bool dsi, bool externalBios, u8 *bios, u32 biosLength)
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}
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else
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{
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memcpy(Key1_KeyBuf, bios + (dsi ? 0xC6D0 : 0x0030), 0x1048);
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memcpy(Key1_KeyBuf.data(), bios + (dsi ? 0xC6D0 : 0x0030), sizeof(Key1_KeyBuf));
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Platform::Log(LogLevel::Debug, "NDSCart: Initialized Key1_KeyBuf from memory\n");
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}
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}
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else
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{
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// well
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memset(Key1_KeyBuf, 0, 0x1048);
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memset(Key1_KeyBuf.data(), 0, sizeof(Key1_KeyBuf));
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Platform::Log(LogLevel::Debug, "NDSCart: Initialized Key1_KeyBuf to zero\n");
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}
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}
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void Key1_InitKeycode(bool dsi, u32 idcode, u32 level, u32 mod, u8 *bios, u32 biosLength)
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void NDSCartSlot::Key1_InitKeycode(bool dsi, u32 idcode, u32 level, u32 mod, u8 *bios, u32 biosLength) noexcept
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{
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Key1_LoadKeyBuf(dsi, Platform::GetConfigBool(Platform::ExternalBIOSEnable), bios, biosLength);
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@ -174,7 +150,7 @@ void Key1_InitKeycode(bool dsi, u32 idcode, u32 level, u32 mod, u8 *bios, u32 bi
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}
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void Key2_Encrypt(u8* data, u32 len)
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void NDSCartSlot::Key2_Encrypt(u8* data, u32 len) noexcept
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{
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for (u32 i = 0; i < len; i++)
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{
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@ -260,7 +236,7 @@ void CartCommon::LoadSave(const u8* savedata, u32 savelen)
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{
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}
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int CartCommon::ROMCommandStart(u8* cmd, u8* data, u32 len)
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int CartCommon::ROMCommandStart(NDSCart::NDSCartSlot& cartslot, u8* cmd, u8* data, u32 len)
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{
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if (CmdEncMode == 0)
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{
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@ -289,7 +265,7 @@ int CartCommon::ROMCommandStart(u8* cmd, u8* data, u32 len)
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case 0x3C:
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CmdEncMode = 1;
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Key1_InitKeycode(false, *(u32*)&ROM[0xC], 2, 2, NDS::ARM7BIOS, sizeof(NDS::ARM7BIOS));
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cartslot.Key1_InitKeycode(false, *(u32*)&ROM[0xC], 2, 2, NDS::ARM7BIOS, sizeof(NDS::ARM7BIOS));
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DSiMode = false;
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return 0;
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@ -297,7 +273,7 @@ int CartCommon::ROMCommandStart(u8* cmd, u8* data, u32 len)
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if (IsDSi)
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{
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CmdEncMode = 1;
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Key1_InitKeycode(true, *(u32*)&ROM[0xC], 1, 2, DSi::ARM7iBIOS, sizeof(DSi::ARM7iBIOS));
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cartslot.Key1_InitKeycode(true, *(u32*)&ROM[0xC], 1, 2, DSi::ARM7iBIOS, sizeof(DSi::ARM7iBIOS));
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DSiMode = true;
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}
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return 0;
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@ -314,7 +290,7 @@ int CartCommon::ROMCommandStart(u8* cmd, u8* data, u32 len)
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u8 cmddec[8];
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*(u32*)&cmddec[0] = ByteSwap(*(u32*)&cmd[4]);
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*(u32*)&cmddec[4] = ByteSwap(*(u32*)&cmd[0]);
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Key1_Decrypt((u32*)cmddec);
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cartslot.Key1_Decrypt((u32*)cmddec);
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u32 tmp = ByteSwap(*(u32*)&cmddec[4]);
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*(u32*)&cmddec[4] = ByteSwap(*(u32*)&cmddec[0]);
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*(u32*)&cmddec[0] = tmp;
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@ -518,9 +494,9 @@ void CartRetail::LoadSave(const u8* savedata, u32 savelen)
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Platform::WriteNDSSave(savedata, len, 0, len);
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}
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int CartRetail::ROMCommandStart(u8* cmd, u8* data, u32 len)
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int CartRetail::ROMCommandStart(NDSCart::NDSCartSlot& cartslot, u8* cmd, u8* data, u32 len)
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{
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if (CmdEncMode != 2) return CartCommon::ROMCommandStart(cmd, data, len);
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if (CmdEncMode != 2) return CartCommon::ROMCommandStart(cartslot, cmd, data, len);
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switch (cmd[0])
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{
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@ -541,7 +517,7 @@ int CartRetail::ROMCommandStart(u8* cmd, u8* data, u32 len)
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return 0;
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default:
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return CartCommon::ROMCommandStart(cmd, data, len);
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return CartCommon::ROMCommandStart(cartslot, cmd, data, len);
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}
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}
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@ -922,9 +898,9 @@ void CartRetailNAND::LoadSave(const u8* savedata, u32 savelen)
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BuildSRAMID();
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}
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int CartRetailNAND::ROMCommandStart(u8* cmd, u8* data, u32 len)
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int CartRetailNAND::ROMCommandStart(NDSCart::NDSCartSlot& cartslot, u8* cmd, u8* data, u32 len)
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{
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if (CmdEncMode != 2) return CartCommon::ROMCommandStart(cmd, data, len);
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if (CmdEncMode != 2) return CartCommon::ROMCommandStart(cartslot, cmd, data, len);
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switch (cmd[0])
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{
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@ -1054,7 +1030,7 @@ int CartRetailNAND::ROMCommandStart(u8* cmd, u8* data, u32 len)
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return 0;
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default:
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return CartRetail::ROMCommandStart(cmd, data, len);
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return CartRetail::ROMCommandStart(cartslot, cmd, data, len);
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}
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}
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@ -1272,9 +1248,9 @@ void CartHomebrew::DoSavestate(Savestate* file)
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CartCommon::DoSavestate(file);
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}
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int CartHomebrew::ROMCommandStart(u8* cmd, u8* data, u32 len)
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int CartHomebrew::ROMCommandStart(NDSCart::NDSCartSlot& cartslot, u8* cmd, u8* data, u32 len)
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{
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if (CmdEncMode != 2) return CartCommon::ROMCommandStart(cmd, data, len);
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if (CmdEncMode != 2) return CartCommon::ROMCommandStart(cartslot, cmd, data, len);
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switch (cmd[0])
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{
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@ -1305,7 +1281,7 @@ int CartHomebrew::ROMCommandStart(u8* cmd, u8* data, u32 len)
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return 1;
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default:
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return CartCommon::ROMCommandStart(cmd, data, len);
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return CartCommon::ROMCommandStart(cartslot, cmd, data, len);
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}
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}
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@ -1471,32 +1447,29 @@ void CartHomebrew::ReadROM_B7(u32 addr, u32 len, u8* data, u32 offset)
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bool Init()
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NDSCartSlot::NDSCartSlot() noexcept
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{
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NDS::RegisterEventFunc(NDS::Event_ROMTransfer, ROMTransfer_PrepareData, ROMPrepareData);
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NDS::RegisterEventFunc(NDS::Event_ROMTransfer, ROMTransfer_End, ROMEndTransfer);
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NDS::RegisterEventFunc(NDS::Event_ROMSPITransfer, 0, SPITransferDone);
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Cart = nullptr;
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return true;
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NDS::RegisterEventFunc(NDS::Event_ROMTransfer, ROMTransfer_PrepareData, MemberEventFunc(NDSCartSlot, ROMPrepareData));
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NDS::RegisterEventFunc(NDS::Event_ROMTransfer, ROMTransfer_End, MemberEventFunc(NDSCartSlot, ROMEndTransfer));
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NDS::RegisterEventFunc(NDS::Event_ROMSPITransfer, 0, MemberEventFunc(NDSCartSlot, SPITransferDone));
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// All fields are default-constructed because they're listed as such in the class declaration
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}
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void DeInit()
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NDSCartSlot::~NDSCartSlot() noexcept
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{
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Cart = nullptr;
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NDS::UnregisterEventFunc(NDS::Event_ROMTransfer, ROMTransfer_PrepareData);
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NDS::UnregisterEventFunc(NDS::Event_ROMTransfer, ROMTransfer_End);
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NDS::UnregisterEventFunc(NDS::Event_ROMSPITransfer, 0);
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// Cart is cleaned up automatically because it's a unique_ptr
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}
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void Reset()
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void NDSCartSlot::Reset() noexcept
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{
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ResetCart();
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}
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void DoSavestate(Savestate* file)
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void NDSCartSlot::DoSavestate(Savestate* file) noexcept
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{
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file->Section("NDSC");
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@ -1507,14 +1480,14 @@ void DoSavestate(Savestate* file)
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file->Var32(&SPIDataPos);
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file->Bool32(&SPIHold);
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file->VarArray(ROMCommand, 8);
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file->VarArray(ROMCommand.data(), sizeof(ROMCommand));
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file->Var32(&ROMData);
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file->VarArray(TransferData, 0x4000);
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file->VarArray(TransferData.data(), sizeof(TransferData));
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file->Var32(&TransferPos);
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file->Var32(&TransferLen);
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file->Var32(&TransferDir);
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file->VarArray(TransferCmd, 8);
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file->VarArray(TransferCmd.data(), sizeof(TransferCmd));
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// cart inserted/len/ROM/etc should be already populated
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// savestate should be loaded after the right game is loaded
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@ -1589,7 +1562,7 @@ bool ReadROMParams(u32 gamecode, ROMListEntry* params)
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}
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void DecryptSecureArea(u8* out)
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void NDSCartSlot::DecryptSecureArea(u8* out) noexcept
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{
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const NDSHeader& header = Cart->GetHeader();
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const u8* cartrom = Cart->GetROM();
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@ -1741,7 +1714,7 @@ std::unique_ptr<CartCommon> ParseROM(const u8* romdata, u32 romlen)
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return cart;
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}
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bool InsertROM(std::unique_ptr<CartCommon>&& cart)
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bool NDSCartSlot::InsertROM(std::unique_ptr<CartCommon>&& cart) noexcept
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{
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if (!cart) {
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Log(LogLevel::Error, "Failed to insert invalid cart; existing cart (if any) was not ejected.\n");
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@ -1793,36 +1766,26 @@ bool InsertROM(std::unique_ptr<CartCommon>&& cart)
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return true;
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}
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bool LoadROM(const u8* romdata, u32 romlen)
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bool NDSCartSlot::LoadROM(const u8* romdata, u32 romlen) noexcept
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{
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std::unique_ptr<CartCommon> cart = ParseROM(romdata, romlen);
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return InsertROM(std::move(cart));
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}
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void LoadSave(const u8* savedata, u32 savelen)
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void NDSCartSlot::LoadSave(const u8* savedata, u32 savelen) noexcept
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{
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if (Cart)
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Cart->LoadSave(savedata, savelen);
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}
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void SetupDirectBoot(const std::string& romname)
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void NDSCartSlot::SetupDirectBoot(const std::string& romname) noexcept
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{
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if (Cart)
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Cart->SetupDirectBoot(romname);
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}
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u8* GetSaveMemory()
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{
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return Cart ? Cart->GetSaveMemory() : nullptr;
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}
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u32 GetSaveMemoryLength()
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{
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return Cart ? Cart->GetSaveMemoryLength() : 0;
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}
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void EjectCart()
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void NDSCartSlot::EjectCart() noexcept
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{
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if (!Cart) return;
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@ -1837,7 +1800,7 @@ void EjectCart()
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// CHECKME: does an eject imply anything for the ROM/SPI transfer registers?
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}
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void ResetCart()
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void NDSCartSlot::ResetCart() noexcept
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{
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// CHECKME: what if there is a transfer in progress?
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@ -1848,24 +1811,24 @@ void ResetCart()
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SPIDataPos = 0;
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SPIHold = false;
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memset(ROMCommand, 0, 8);
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memset(ROMCommand.data(), 0, sizeof(ROMCommand));
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ROMData = 0;
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Key2_X = 0;
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Key2_Y = 0;
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memset(TransferData, 0, 0x4000);
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memset(TransferData.data(), 0, sizeof(TransferData));
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TransferPos = 0;
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TransferLen = 0;
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TransferDir = 0;
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memset(TransferCmd, 0, 8);
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memset(TransferCmd.data(), 0, sizeof(TransferCmd));
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TransferCmd[0] = 0xFF;
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if (Cart) Cart->Reset();
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}
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void ROMEndTransfer(u32 param)
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void NDSCartSlot::ROMEndTransfer(u32 param) noexcept
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{
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ROMCnt &= ~(1<<31);
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@ -1873,10 +1836,10 @@ void ROMEndTransfer(u32 param)
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NDS::SetIRQ((NDS::ExMemCnt[0]>>11)&0x1, NDS::IRQ_CartXferDone);
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if (Cart)
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Cart->ROMCommandFinish(TransferCmd, TransferData, TransferLen);
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Cart->ROMCommandFinish(TransferCmd.data(), TransferData.data(), TransferLen);
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}
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void ROMPrepareData(u32 param)
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void NDSCartSlot::ROMPrepareData(u32 param) noexcept
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{
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if (TransferDir == 0)
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{
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@ -1896,7 +1859,7 @@ void ROMPrepareData(u32 param)
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NDS::CheckDMAs(0, 0x05);
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}
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void WriteROMCnt(u32 val)
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void NDSCartSlot::WriteROMCnt(u32 val) noexcept
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{
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u32 xferstart = (val & ~ROMCnt) & (1<<31);
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ROMCnt = (val & 0xFF7F7FFF) | (ROMCnt & 0x20800000);
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@ -1941,7 +1904,7 @@ void WriteROMCnt(u32 val)
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*(u32*)&TransferCmd[0] = *(u32*)&ROMCommand[0];
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*(u32*)&TransferCmd[4] = *(u32*)&ROMCommand[4];
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memset(TransferData, 0xFF, TransferLen);
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memset(TransferData.data(), 0xFF, TransferLen);
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/*printf("ROM COMMAND %04X %08X %02X%02X%02X%02X%02X%02X%02X%02X SIZE %04X\n",
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SPICnt, ROMCnt,
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@ -1954,7 +1917,7 @@ void WriteROMCnt(u32 val)
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TransferDir = 0;
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if (Cart)
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TransferDir = Cart->ROMCommandStart(TransferCmd, TransferData, TransferLen);
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TransferDir = Cart->ROMCommandStart(*this, TransferCmd.data(), TransferData.data(), TransferLen);
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if ((datasize > 0) && (((ROMCnt >> 30) & 0x1) != TransferDir))
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Log(LogLevel::Debug, "NDSCART: !! BAD TRANSFER DIRECTION FOR CMD %02X, DIR=%d, ROMCNT=%08X\n", ROMCommand[0], TransferDir, ROMCnt);
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@ -1985,7 +1948,7 @@ void WriteROMCnt(u32 val)
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NDS::ScheduleEvent(NDS::Event_ROMTransfer, false, xfercycle*(cmddelay+4), ROMTransfer_PrepareData, 0);
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}
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void AdvanceROMTransfer()
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void NDSCartSlot::AdvanceROMTransfer() noexcept
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{
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ROMCnt &= ~(1<<23);
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@ -2005,7 +1968,7 @@ void AdvanceROMTransfer()
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ROMEndTransfer(0);
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}
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u32 ReadROMData()
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u32 NDSCartSlot::ReadROMData() noexcept
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{
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if (ROMCnt & (1<<30)) return 0;
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@ -2017,7 +1980,7 @@ u32 ReadROMData()
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return ROMData;
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}
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void WriteROMData(u32 val)
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void NDSCartSlot::WriteROMData(u32 val) noexcept
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{
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if (!(ROMCnt & (1<<30))) return;
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@ -2038,7 +2001,7 @@ void WriteROMData(u32 val)
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}
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void WriteSPICnt(u16 val)
|
||||
void NDSCartSlot::WriteSPICnt(u16 val) noexcept
|
||||
{
|
||||
if ((SPICnt & 0x2040) == 0x2040 && (val & 0x2000) == 0x0000)
|
||||
{
|
||||
@ -2055,12 +2018,12 @@ void WriteSPICnt(u16 val)
|
||||
Log(LogLevel::Debug, "!! CHANGING AUXSPICNT DURING TRANSFER: %04X\n", val);
|
||||
}
|
||||
|
||||
void SPITransferDone(u32 param)
|
||||
void NDSCartSlot::SPITransferDone(u32 param) noexcept
|
||||
{
|
||||
SPICnt &= ~(1<<7);
|
||||
}
|
||||
|
||||
u8 ReadSPIData()
|
||||
u8 NDSCartSlot::ReadSPIData() const noexcept
|
||||
{
|
||||
if (!(SPICnt & (1<<15))) return 0;
|
||||
if (!(SPICnt & (1<<13))) return 0;
|
||||
@ -2069,7 +2032,7 @@ u8 ReadSPIData()
|
||||
return SPIData;
|
||||
}
|
||||
|
||||
void WriteSPIData(u8 val)
|
||||
void NDSCartSlot::WriteSPIData(u8 val) noexcept
|
||||
{
|
||||
if (!(SPICnt & (1<<15))) return;
|
||||
if (!(SPICnt & (1<<13))) return;
|
||||
|
||||
Reference in New Issue
Block a user