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Invalidate icache before letting the cwcheat engine change memory. Might fix JIT-related cheat crashes.

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This commit is contained in:
Henrik Rydgard 2015-02-02 23:26:25 +01:00
parent a370475425
commit 4d11aa3edb
2 changed files with 30 additions and 3 deletions
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32
Core/CwCheat.cpp
View File

@ -11,6 +11,8 @@
#include "Core/ELF/ParamSFO.h"
#include "Core/System.h"
#include "Core/HLE/sceCtrl.h"
#include "Core/MIPS/JitCommon/NativeJit.h"
#ifdef _WIN32
#include "util/text/utf8.h"
#endif
@ -280,6 +282,12 @@ std::vector<std::string> CWCheatEngine::GetCodesList() { //Reads the entire chea
return codesList;
}
void CWCheatEngine::InvalidateICache(u32 addr, int size) {
if (MIPSComp::jit) {
MIPSComp::jit->GetBlockCache()->InvalidateICache(addr & ~3, 4);
}
}
void CWCheatEngine::Run() {
exit2 = false;
while (!exit2) {
@ -299,7 +307,8 @@ void CWCheatEngine::Run() {
switch (comm >> 28) {
case 0: // 8-bit write.But need more check
if (Memory::IsValidAddress(addr)){
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr & ~3, 4);
if (arg < 0x00000100) // 8-bit
Memory::Write_U8((u8) arg, addr);
else if (arg < 0x00010000) // 16-bit
@ -309,18 +318,21 @@ void CWCheatEngine::Run() {
}
break;
case 0x1: // 16-bit write
if (Memory::IsValidAddress(addr)){
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr & ~3, 4);
Memory::Write_U16((u16) arg, addr);
}
break;
case 0x2: // 32-bit write
if (Memory::IsValidAddress(addr)){
InvalidateICache(addr & ~3, 4);
Memory::Write_U32((u32) arg, addr);
}
break;
case 0x3: // Increment/Decrement
{
addr = GetAddress(arg & 0x0FFFFFFF);
InvalidateICache(addr & ~3, 4);
value = 0;
int increment = 0;
// Read value from memory
@ -382,6 +394,8 @@ void CWCheatEngine::Run() {
int maxAddr = (arg >> 16) & 0xFFFF;
int stepAddr = (arg & 0xFFFF) * 4;
InvalidateICache(addr, maxAddr - addr);
for (int a = 0; a < maxAddr; a++) {
if (Memory::IsValidAddress(addr)) {
Memory::Write_U32((u32) data, addr);
@ -395,8 +409,10 @@ void CWCheatEngine::Run() {
code = GetNextCode();
if (true) {
int destAddr = GetAddress(code[0]);
int len = arg;
InvalidateICache(destAddr, len);
if (Memory::IsValidAddress(addr) && Memory::IsValidAddress(destAddr)) {
Memory::Memcpy(destAddr, Memory::GetPointer(addr), arg);
Memory::Memcpy(destAddr, Memory::GetPointer(addr), len);
}
}
break;
@ -406,6 +422,7 @@ void CWCheatEngine::Run() {
int arg2 = code[0];
int offset = code[1];
int baseOffset = (arg2 >> 20) * 4;
InvalidateICache(addr + baseOffset, 4);
int base = Memory::Read_U32(addr + baseOffset);
int count = arg2 & 0xFFFF;
int type = (arg2 >> 16) & 0xF;
@ -454,6 +471,7 @@ void CWCheatEngine::Run() {
}
}
InvalidateICache((base + offset) & ~3, 4);
switch (type) {
case 0: // 8 bit write
Memory::Write_U8((u8) arg, base + offset);
@ -482,6 +500,7 @@ void CWCheatEngine::Run() {
switch (arg >> 16) {
case 0x0000: // 8-bit OR.
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr & ~3, 4);
int val1 = (int) (arg & 0xFF);
int val2 = (int) Memory::Read_U8(addr);
Memory::Write_U8((u8) (val1 | val2), addr);
@ -489,6 +508,7 @@ void CWCheatEngine::Run() {
break;
case 0x0002: // 8-bit AND.
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr & ~3, 4);
int val1 = (int) (arg & 0xFF);
int val2 = (int) Memory::Read_U8(addr);
Memory::Write_U8((u8) (val1 & val2), addr);
@ -496,6 +516,7 @@ void CWCheatEngine::Run() {
break;
case 0x0004: // 8-bit XOR.
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr & ~3, 4);
int val1 = (int) (arg & 0xFF);
int val2 = (int) Memory::Read_U8(addr);
Memory::Write_U8((u8) (val1 ^ val2), addr);
@ -503,6 +524,7 @@ void CWCheatEngine::Run() {
break;
case 0x0001: // 16-bit OR.
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr & ~3, 4);
short val1 = (short) (arg & 0xFFFF);
short val2 = (short) Memory::Read_U16(addr);
Memory::Write_U16((u16) (val1 | val2), addr);
@ -510,6 +532,7 @@ void CWCheatEngine::Run() {
break;
case 0x0003: // 16-bit AND.
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr & ~3, 4);
short val1 = (short) (arg & 0xFFFF);
short val2 = (short) Memory::Read_U16(addr);
Memory::Write_U16((u16) (val1 & val2), addr);
@ -517,6 +540,7 @@ void CWCheatEngine::Run() {
break;
case 0x0005: // 16-bit OR.
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr & ~3, 4);
short val1 = (short) (arg & 0xFFFF);
short val2 = (short) Memory::Read_U16(addr);
Memory::Write_U16((u16) (val1 ^ val2), addr);
@ -533,6 +557,7 @@ void CWCheatEngine::Run() {
bool is8Bit = (data >> 16) == 0x0000;
int maxAddr = (arg >> 16) & 0xFFFF;
int stepAddr = (arg & 0xFFFF) * (is8Bit ? 1 : 2);
InvalidateICache(addr, maxAddr - addr);
for (int a = 0; a < maxAddr; a++) {
if (Memory::IsValidAddress(addr)) {
if (is8Bit) {
@ -551,6 +576,7 @@ void CWCheatEngine::Run() {
break;
case 0xC: // Code stopper
if (Memory::IsValidAddress(addr)) {
InvalidateICache(addr, 4);
value = Memory::Read_U32(addr);
if ((u32)value != arg) {
SkipAllCodes();

1
Core/CwCheat.h
View File

@ -29,6 +29,7 @@ public:
bool HasCheats();
private:
void InvalidateICache(u32 addr, int size);
void SkipCodes(int count);
void SkipAllCodes();
bool cheatsOn, exit2, cheatEnabled;