mirror of https://github.com/PCSX2/pcsx2.git
491 lines
12 KiB
C++
491 lines
12 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
|
|
* Copyright (C) 2002-2010 PCSX2 Dev Team
|
|
*
|
|
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU Lesser General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with PCSX2.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "PrecompiledHeader.h"
|
|
|
|
#define _PC_ // disables MIPS opcode macros.
|
|
|
|
#include "IopCommon.h"
|
|
#include "Patch.h"
|
|
|
|
u32 SkipCount = 0, IterationCount = 0;
|
|
u32 IterationIncrement = 0, ValueIncrement = 0;
|
|
u32 PrevCheatType = 0, PrevCheatAddr = 0, LastType = 0;
|
|
|
|
void writeCheat()
|
|
{
|
|
switch (LastType)
|
|
{
|
|
case 0x0:
|
|
memWrite8(PrevCheatAddr, IterationIncrement & 0xFF);
|
|
break;
|
|
case 0x1:
|
|
memWrite16(PrevCheatAddr, IterationIncrement & 0xFFFF);
|
|
break;
|
|
case 0x2:
|
|
memWrite32(PrevCheatAddr, IterationIncrement);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void handle_extended_t(IniPatch *p)
|
|
{
|
|
if (SkipCount > 0)
|
|
{
|
|
SkipCount--;
|
|
}
|
|
else switch (PrevCheatType)
|
|
{
|
|
case 0x3040: // vvvvvvvv 00000000 Inc
|
|
{
|
|
u32 mem = memRead32(PrevCheatAddr);
|
|
memWrite32(PrevCheatAddr, mem + (p->addr));
|
|
PrevCheatType = 0;
|
|
break;
|
|
}
|
|
|
|
case 0x3050: // vvvvvvvv 00000000 Dec
|
|
{
|
|
u32 mem = memRead32(PrevCheatAddr);
|
|
memWrite32(PrevCheatAddr, mem - (p->addr));
|
|
PrevCheatType = 0;
|
|
break;
|
|
}
|
|
|
|
case 0x4000: // vvvvvvvv iiiiiiii
|
|
for (u32 i = 0; i < IterationCount; i++)
|
|
{
|
|
memWrite32((u32)(PrevCheatAddr + (i * IterationIncrement)), (u32)(p->addr + ((u32)p->data * i)));
|
|
}
|
|
PrevCheatType = 0;
|
|
break;
|
|
|
|
case 0x5000: // dddddddd iiiiiiii
|
|
for (u32 i = 0; i < IterationCount; i++)
|
|
{
|
|
u8 mem = memRead8(PrevCheatAddr + i);
|
|
memWrite8(((u32)p->data) + i, mem);
|
|
}
|
|
PrevCheatType = 0;
|
|
break;
|
|
|
|
case 0x6000: // 000Xnnnn iiiiiiii
|
|
if (IterationIncrement == 0x0)
|
|
{
|
|
//LastType = ((u32)p->addr & 0x000F0000) >> 16;
|
|
u32 mem = memRead32(PrevCheatAddr);
|
|
if ((u32)p->addr < 0x100)
|
|
{
|
|
LastType = 0x0;
|
|
PrevCheatAddr = mem + ((u32)p->addr);
|
|
}
|
|
else if ((u32)p->addr < 0x1000)
|
|
{
|
|
LastType = 0x1;
|
|
PrevCheatAddr = mem + ((u32)p->addr * 2);
|
|
}
|
|
else
|
|
{
|
|
LastType = 0x2;
|
|
PrevCheatAddr = mem + ((u32)p->addr * 4);
|
|
}
|
|
|
|
// Check if needed to read another pointer
|
|
PrevCheatType = 0;
|
|
if (((mem & 0x0FFFFFFF) & 0x3FFFFFFC) != 0)
|
|
{
|
|
switch (LastType)
|
|
{
|
|
case 0x0:
|
|
memWrite8(PrevCheatAddr, (u8)p->data & 0xFF);
|
|
break;
|
|
case 0x1:
|
|
memWrite16(PrevCheatAddr, (u16)p->data & 0x0FFFF);
|
|
break;
|
|
case 0x2:
|
|
memWrite32(PrevCheatAddr, (u32)p->data);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Get Number of pointers
|
|
if (((u32)p->addr & 0x0000FFFF) == 0)
|
|
IterationCount = 1;
|
|
else
|
|
IterationCount = (u32)p->addr & 0x0000FFFF;
|
|
|
|
// Read first pointer
|
|
LastType = ((u32)p->addr & 0x000F0000) >> 16;
|
|
u32 mem = memRead32(PrevCheatAddr);
|
|
|
|
PrevCheatAddr = mem + (u32)p->data;
|
|
IterationCount--;
|
|
|
|
// Check if needed to read another pointer
|
|
if (IterationCount == 0)
|
|
{
|
|
PrevCheatType = 0;
|
|
if (((mem & 0x0FFFFFFF) & 0x3FFFFFFC) != 0) writeCheat();
|
|
}
|
|
else
|
|
{
|
|
if (((mem & 0x0FFFFFFF) & 0x3FFFFFFC) != 0)
|
|
PrevCheatType = 0;
|
|
else
|
|
PrevCheatType = 0x6001;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0x6001: // 000Xnnnn iiiiiiii
|
|
{
|
|
// Read first pointer
|
|
u32 mem = memRead32(PrevCheatAddr & 0x0FFFFFFF);
|
|
|
|
PrevCheatAddr = mem + (u32)p->addr;
|
|
IterationCount--;
|
|
|
|
// Check if needed to read another pointer
|
|
if (IterationCount == 0)
|
|
{
|
|
PrevCheatType = 0;
|
|
if (((mem & 0x0FFFFFFF) & 0x3FFFFFFC) != 0) writeCheat();
|
|
}
|
|
else
|
|
{
|
|
mem = memRead32(PrevCheatAddr);
|
|
|
|
PrevCheatAddr = mem + (u32)p->data;
|
|
IterationCount--;
|
|
if (IterationCount == 0)
|
|
{
|
|
PrevCheatType = 0;
|
|
if (((mem & 0x0FFFFFFF) & 0x3FFFFFFC) != 0) writeCheat();
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if ((p->addr & 0xF0000000) == 0x00000000) // 0aaaaaaa 0000000vv
|
|
{
|
|
memWrite8(p->addr & 0x0FFFFFFF, (u8)p->data & 0x000000FF);
|
|
PrevCheatType = 0;
|
|
}
|
|
else if ((p->addr & 0xF0000000) == 0x10000000) // 1aaaaaaa 0000vvvv
|
|
{
|
|
memWrite16(p->addr & 0x0FFFFFFF, (u16)p->data & 0x0000FFFF);
|
|
PrevCheatType = 0;
|
|
}
|
|
else if ((p->addr & 0xF0000000) == 0x20000000) // 2aaaaaaa vvvvvvvv
|
|
{
|
|
memWrite32(p->addr & 0x0FFFFFFF, (u32)p->data);
|
|
PrevCheatType = 0;
|
|
}
|
|
else if ((p->addr & 0xFFFF0000) == 0x30000000) // 300000vv 0aaaaaaa Inc
|
|
{
|
|
u8 mem = memRead8((u32)p->data);
|
|
memWrite8((u32)p->data, mem + (p->addr & 0x000000FF));
|
|
PrevCheatType = 0;
|
|
}
|
|
else if ((p->addr & 0xFFFF0000) == 0x30100000) // 301000vv 0aaaaaaa Dec
|
|
{
|
|
u8 mem = memRead8((u32)p->data);
|
|
memWrite8((u32)p->data, mem - (p->addr & 0x000000FF));
|
|
PrevCheatType = 0;
|
|
}
|
|
else if ((p->addr & 0xFFFF0000) == 0x30200000) // 3020vvvv 0aaaaaaa Inc
|
|
{
|
|
u16 mem = memRead16((u32)p->data);
|
|
memWrite16((u32)p->data, mem + (p->addr & 0x0000FFFF));
|
|
PrevCheatType = 0;
|
|
}
|
|
else if ((p->addr & 0xFFFF0000) == 0x30300000) // 3030vvvv 0aaaaaaa Dec
|
|
{
|
|
u16 mem = memRead16((u32)p->data);
|
|
memWrite16((u32)p->data, mem - (p->addr & 0x0000FFFF));
|
|
PrevCheatType = 0;
|
|
}
|
|
else if ((p->addr & 0xFFFF0000) == 0x30400000) // 30400000 0aaaaaaa Inc + Another line
|
|
{
|
|
PrevCheatType = 0x3040;
|
|
PrevCheatAddr = (u32)p->data;
|
|
}
|
|
else if ((p->addr & 0xFFFF0000) == 0x30500000) // 30500000 0aaaaaaa Inc + Another line
|
|
{
|
|
PrevCheatType = 0x3050;
|
|
PrevCheatAddr = (u32)p->data;
|
|
}
|
|
else if ((p->addr & 0xF0000000) == 0x40000000) // 4aaaaaaa nnnnssss + Another line
|
|
{
|
|
IterationCount = ((u32)p->data & 0xFFFF0000) / 0x10000;
|
|
IterationIncrement = ((u32)p->data & 0x0000FFFF) * 4;
|
|
PrevCheatAddr = (u32)p->addr & 0x0FFFFFFF;
|
|
PrevCheatType = 0x4000;
|
|
}
|
|
else if ((p->addr & 0xF0000000) == 0x50000000) // 5sssssss nnnnnnnn + Another line
|
|
{
|
|
PrevCheatAddr = (u32)p->addr & 0x0FFFFFFF;
|
|
IterationCount = ((u32)p->data);
|
|
PrevCheatType = 0x5000;
|
|
}
|
|
else if ((p->addr & 0xF0000000) == 0x60000000) // 6aaaaaaa 000000vv + Another line/s
|
|
{
|
|
PrevCheatAddr = (u32)p->addr & 0x0FFFFFFF;
|
|
IterationIncrement = ((u32)p->data);
|
|
IterationCount = 0;
|
|
PrevCheatType = 0x6000;
|
|
}
|
|
else if ((p->addr & 0xF0000000) == 0x70000000)
|
|
{
|
|
if ((p->data & 0x00F00000) == 0x00000000) // 7aaaaaaa 000000vv
|
|
{
|
|
u8 mem = memRead8((u32)p->addr & 0x0FFFFFFF);
|
|
memWrite8((u32)p->addr & 0x0FFFFFFF, (u8)(mem | (p->data & 0x000000FF)));
|
|
}
|
|
else if ((p->data & 0x00F00000) == 0x00100000) // 7aaaaaaa 0010vvvv
|
|
{
|
|
u16 mem = memRead16((u32)p->addr & 0x0FFFFFFF);
|
|
memWrite16((u32)p->addr & 0x0FFFFFFF, (u16)(mem | (p->data & 0x0000FFFF)));
|
|
}
|
|
else if ((p->data & 0x00F00000) == 0x00200000) // 7aaaaaaa 002000vv
|
|
{
|
|
u8 mem = memRead8((u32)p->addr & 0x0FFFFFFF);
|
|
memWrite8((u32)p->addr & 0x0FFFFFFF, (u8)(mem & (p->data & 0x000000FF)));
|
|
}
|
|
else if ((p->data & 0x00F00000) == 0x00300000) // 7aaaaaaa 0030vvvv
|
|
{
|
|
u16 mem = memRead16((u32)p->addr & 0x0FFFFFFF);
|
|
memWrite16((u32)p->addr & 0x0FFFFFFF, (u16)(mem & (p->data & 0x0000FFFF)));
|
|
}
|
|
else if ((p->data & 0x00F00000) == 0x00400000) // 7aaaaaaa 004000vv
|
|
{
|
|
u8 mem = memRead8((u32)p->addr & 0x0FFFFFFF);
|
|
memWrite8((u32)p->addr & 0x0FFFFFFF, (u8)(mem ^ (p->data & 0x000000FF)));
|
|
}
|
|
else if ((p->data & 0x00F00000) == 0x00500000) // 7aaaaaaa 0050vvvv
|
|
{
|
|
u16 mem = memRead16((u32)p->addr & 0x0FFFFFFF);
|
|
memWrite16((u32)p->addr & 0x0FFFFFFF, (u16)(mem ^ (p->data & 0x0000FFFF)));
|
|
}
|
|
}
|
|
else if (p->addr < 0xE0000000)
|
|
{
|
|
if (((u32)p->data & 0xFFFF0000) == 0x00000000) // Daaaaaaa 0000dddd
|
|
{
|
|
u16 mem = memRead16((u32)p->addr & 0x0FFFFFFF);
|
|
if (mem != (0x0000FFFF & (u32)p->data))
|
|
{
|
|
SkipCount = 1;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
else if (((u32)p->data & 0xFFFF0000) == 0x00100000) // Daaaaaaa 0010dddd
|
|
{
|
|
u16 mem = memRead16((u32)p->addr & 0x0FFFFFFF);
|
|
if (mem == (0x0000FFFF & (u32)p->data))
|
|
{
|
|
SkipCount = 1;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
else if (((u32)p->data & 0xFFFF0000) == 0x00200000) // Daaaaaaa 0020dddd
|
|
{
|
|
u16 mem = memRead16((u32)p->addr & 0x0FFFFFFF);
|
|
if (mem >= (0x0000FFFF & (u32)p->data))
|
|
{
|
|
SkipCount = 1;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
else if (((u32)p->data & 0xFFFF0000) == 0x00300000) // Daaaaaaa 0030dddd
|
|
{
|
|
u16 mem = memRead16((u32)p->addr & 0x0FFFFFFF);
|
|
if (mem <= (0x0000FFFF & (u32)p->data))
|
|
{
|
|
SkipCount = 1;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
}
|
|
else if (p->addr < 0xF0000000)
|
|
{
|
|
if (((u32)p->data & 0xF0000000) == 0x00000000) // Ezyyvvvv 0aaaaaaa
|
|
{
|
|
u8 z = ((u32)p->addr & 0x0F000000) / 0x01000000;
|
|
|
|
if (z == 0) // E0yyvvvv 0aaaaaaa
|
|
{
|
|
u16 mem = memRead16((u32)p->data & 0x0FFFFFFF);
|
|
if (mem != (0x0000FFFF & (u32)p->addr))
|
|
{
|
|
SkipCount = ((u32)p->addr & 0x00FF0000) / 0x10000;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
else if (z == 1) // E1yy00vv 0aaaaaaa
|
|
{
|
|
u8 mem = memRead8((u32)p->data & 0x0FFFFFFF);
|
|
if (mem != (0x000000FF & (u32)p->addr))
|
|
{
|
|
SkipCount = ((u32)p->addr & 0x00FF0000) / 0x10000;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
}
|
|
else if (((u32)p->data & 0xF0000000) == 0x10000000) // Ezyyvvvv 1aaaaaaa
|
|
{
|
|
u8 z = ((u32)p->addr & 0x0F000000) / 0x01000000;
|
|
|
|
if (z == 0) // E0yyvvvv 1aaaaaaa
|
|
{
|
|
u16 mem = memRead16((u32)p->data & 0x0FFFFFFF);
|
|
if (mem == (0x0000FFFF & (u32)p->addr))
|
|
{
|
|
SkipCount = ((u32)p->addr & 0x00FF0000) / 0x10000;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
else if (z == 1) // E1yy00vv 1aaaaaaa
|
|
{
|
|
u8 mem = memRead8((u32)p->data & 0x0FFFFFFF);
|
|
if (mem == (0x000000FF & (u32)p->addr))
|
|
{
|
|
SkipCount = ((u32)p->addr & 0x00FF0000) / 0x10000;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
}
|
|
else if (((u32)p->data & 0xF0000000) == 0x20000000) // Ezyyvvvv 2aaaaaaa
|
|
{
|
|
u8 z = ((u32)p->addr & 0x0F000000) / 0x01000000;
|
|
|
|
if (z == 0) // E0yyvvvv 2aaaaaaa
|
|
{
|
|
u16 mem = memRead16((u32)p->data & 0x0FFFFFFF);
|
|
if (mem >= (0x0000FFFF & (u32)p->addr))
|
|
{
|
|
SkipCount = ((u32)p->addr & 0x00FF0000) / 0x10000;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
else if (z == 1) // E1yy00vv 2aaaaaaa
|
|
{
|
|
u8 mem = memRead8((u32)p->data & 0x0FFFFFFF);
|
|
if (mem >= (0x000000FF & (u32)p->addr))
|
|
{
|
|
SkipCount = ((u32)p->addr & 0x00FF0000) / 0x10000;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
}
|
|
else if (((u32)p->data & 0xF0000000) == 0x30000000) // Ezyyvvvv 3aaaaaaa
|
|
{
|
|
u8 z = ((u32)p->addr & 0x0F000000) / 0x01000000;
|
|
|
|
if (z == 0) // E0yyvvvv 3aaaaaaa
|
|
{
|
|
u16 mem = memRead16((u32)p->data & 0x0FFFFFFF);
|
|
if (mem <= (0x0000FFFF & (u32)p->addr))
|
|
{
|
|
SkipCount = ((u32)p->addr & 0x00FF0000) / 0x10000;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
else if (z == 1) // E1yy00vv 3aaaaaaa
|
|
{
|
|
u8 mem = memRead8((u32)p->data & 0x0FFFFFFF);
|
|
if (mem <= (0x000000FF & (u32)p->addr))
|
|
{
|
|
SkipCount = ((u32)p->addr & 0x00FF0000) / 0x10000;
|
|
}
|
|
PrevCheatType = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void _ApplyPatch(IniPatch *p)
|
|
{
|
|
if (p->enabled == 0) return;
|
|
|
|
switch (p->cpu)
|
|
{
|
|
case CPU_EE:
|
|
switch (p->type)
|
|
{
|
|
case BYTE_T:
|
|
if (memRead8(p->addr) != (u8)p->data)
|
|
memWrite8(p->addr, (u8)p->data);
|
|
break;
|
|
|
|
case SHORT_T:
|
|
if (memRead16(p->addr) != (u16)p->data)
|
|
memWrite16(p->addr, (u16)p->data);
|
|
break;
|
|
|
|
case WORD_T:
|
|
if (memRead32(p->addr) != (u32)p->data)
|
|
memWrite32(p->addr, (u32)p->data);
|
|
break;
|
|
|
|
case DOUBLE_T:
|
|
u64 mem;
|
|
memRead64(p->addr, &mem);
|
|
if (mem != p->data)
|
|
memWrite64(p->addr, &p->data);
|
|
break;
|
|
|
|
case EXTENDED_T:
|
|
handle_extended_t(p);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case CPU_IOP:
|
|
switch (p->type)
|
|
{
|
|
case BYTE_T:
|
|
if (iopMemRead8(p->addr) != (u8)p->data)
|
|
iopMemWrite8(p->addr, (u8)p->data);
|
|
break;
|
|
case SHORT_T:
|
|
if (iopMemRead16(p->addr) != (u16)p->data)
|
|
iopMemWrite16(p->addr, (u16)p->data);
|
|
break;
|
|
case WORD_T:
|
|
if (iopMemRead32(p->addr) != (u32)p->data)
|
|
iopMemWrite32(p->addr, (u32)p->data);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|