dolphin/Source/Core/VideoCommon/Src/BPMemory.cpp

69 lines
1.7 KiB
C++

// Copyright (C) 2003-2008 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "Common.h"
#include "BPMemory.h"
//BP state
// STATE_TO_SAVE
BPMemory bpmem;
// The plugin must implement this.
void BPWritten(const Bypass& bp);
// Call browser: OpcodeDecoding.cpp ExecuteDisplayList > Decode() > LoadBPReg()
void LoadBPReg(u32 value0)
{
//handle the mask register
int opcode = value0 >> 24;
int oldval = ((u32*)&bpmem)[opcode];
int newval = (oldval & ~bpmem.bpMask) | (value0 & bpmem.bpMask);
int changes = (oldval ^ newval) & 0xFFFFFF;
Bypass bp = {opcode, changes, newval};
//reset the mask register
if (opcode != 0xFE)
bpmem.bpMask = 0xFFFFFF;
BPWritten(bp);
}
// Called when loading a saved state.
// Needs more testing though.
void BPReload()
{
for (int i = 0; i < 254; i++)
{
switch (i) {
case 0x41:
case 0x45: //GXSetDrawDone
case 0x52:
case 0x65:
case 0x67: // set gp metric?
case BPMEM_PE_TOKEN_ID:
case BPMEM_PE_TOKEN_INT_ID:
// Cases in which we DON'T want to reload the BP
continue;
default:
Bypass bp = {i, 0xFFFFFF, ((u32*)&bpmem)[i]};
BPWritten(bp);
}
}
}