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[ActionReplay] More conditional ops

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wheremyfoodat 2023-07-21 14:49:04 +03:00
parent 4a45599303
commit 0588b99674
3 changed files with 24 additions and 15 deletions
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2
include/cheats.hpp
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@ -13,7 +13,7 @@ class Cheats {
public:
enum class CheatType {
ActionReplay, // CTRPF cheats
Gateway,
// TODO: Other cheat devices and standards?
};
struct Cheat {

30
src/core/action_replay.cpp
View file

@ -96,14 +96,28 @@ void ActionReplay::runInstruction(const Cheat& cheat, u32 instruction) {
break;
}
// Less Than (YYYYYYYY < [XXXXXXX + offset])
case 0x4: {
const u32 baseAddr = Helpers::getBits<0, 28>(instruction);
const u32 imm = cheat[pc++];
const u32 value = read32(baseAddr + *activeOffset);
Helpers::panic("TODO: How do ActionReplay conditional blocks work?");
break;
}
#define MAKE_IF_INSTRUCTION(opcode, comparator) \
case opcode: { \
const u32 baseAddr = Helpers::getBits<0, 28>(instruction); \
const u32 imm = cheat[pc++]; \
const u32 value = read32(baseAddr + *activeOffset); \
\
pushConditionBlock(imm comparator value); \
break; \
}
// Greater Than (YYYYYYYY > [XXXXXXX + offset]) (Unsigned)
MAKE_IF_INSTRUCTION(3, >)
// Less Than (YYYYYYYY < [XXXXXXX + offset]) (Unsigned)
MAKE_IF_INSTRUCTION(4, <)
// Equal to (YYYYYYYY == [XXXXXXX + offset]) (Unsigned)
MAKE_IF_INSTRUCTION(5, ==)
// Not Equal (YYYYYYYY != [XXXXXXX + offset]) (Unsigned)
MAKE_IF_INSTRUCTION(6, !=)
#undef MAKE_IF_INSTRUCTION
case 0xD: executeDType(cheat, instruction); break;
default: Helpers::panic("Unimplemented ActionReplay instruction type %X", type); break;

7
src/core/cheats.cpp
View file

@ -17,12 +17,7 @@ void Cheats::run() {
break;
}
case CheatType::Gateway: {
Helpers::panic("Gateway cheats not supported yet! Only Action Replay is supported!");
break;
}
default: Helpers::panic("Unknown cheat type");
default: Helpers::panic("Unknown cheat device!");
}
}
}