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PowerPC/MMU: Clean up old comments.

This commit is contained in:
Admiral H. Curtiss 2023-03-26 14:59:08 +02:00
parent db40348c86
commit d7fabf37d6
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1 changed files with 22 additions and 50 deletions
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72
Source/Core/Core/PowerPC/MMU.cpp
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@ -1,6 +1,28 @@
// Copyright 2003 Dolphin Emulator Project // Copyright 2003 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later // SPDX-License-Identifier: GPL-2.0-or-later
// Some of the code in this file was originally based on PearPC, though it has been modified since.
// We have been given permission by the author to re-license the code under GPLv2+.
/*
* PearPC
* ppc_mmu.cc
*
* Copyright (C) 2003, 2004 Sebastian Biallas (sb@biallas.net)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "Core/PowerPC/MMU.h" #include "Core/PowerPC/MMU.h"
#include <bit> #include <bit>
@ -30,25 +52,6 @@
namespace PowerPC namespace PowerPC
{ {
// EFB RE
/*
GXPeekZ
80322de8: rlwinm r0, r3, 2, 14, 29 (0003fffc) a = x << 2 & 0x3fffc
80322dec: oris r0, r0, 0xC800 a |= 0xc8000000
80322df0: rlwinm r3, r0, 0, 20, 9 (ffc00fff) x = a & 0xffc00fff
80322df4: rlwinm r0, r4, 12, 4, 19 (0ffff000) a = (y << 12) & 0x0ffff000;
80322df8: or r0, r3, r0 a |= x;
80322dfc: rlwinm r0, r0, 0, 10, 7 (ff3fffff) a &= 0xff3fffff
80322e00: oris r3, r0, 0x0040 x = a | 0x00400000
80322e04: lwz r0, 0 (r3) r0 = *r3
80322e08: stw r0, 0 (r5) z =
80322e0c: blr
*/
// =================================
// From Memmap.cpp
// ----------------
// Overloaded byteswap functions, for use within the templated functions below. // Overloaded byteswap functions, for use within the templated functions below.
inline u8 bswap(u8 val) inline u8 bswap(u8 val)
{ {
@ -74,7 +77,6 @@ inline u64 bswap(u64 val)
{ {
return Common::swap64(val); return Common::swap64(val);
} }
// =================
enum class XCheckTLBFlag enum class XCheckTLBFlag
{ {
@ -1347,36 +1349,6 @@ TranslateResult JitCache_TranslateAddress(u32 address)
return TranslateResult{from_bat, tlb_addr.address}; return TranslateResult{from_bat, tlb_addr.address};
} }
// *********************************************************************************
// Warning: Test Area
//
// This code is for TESTING and it works in interpreter mode ONLY. Some games (like
// COD iirc) work thanks to this basic TLB emulation.
// It is just a small hack and we have never spend enough time to finalize it.
// Cheers PearPC!
//
// *********************************************************************************
/*
* PearPC
* ppc_mmu.cc
*
* Copyright (C) 2003, 2004 Sebastian Biallas (sb@biallas.net)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
static void GenerateDSIException(u32 effective_address, bool write) static void GenerateDSIException(u32 effective_address, bool write)
{ {
// DSI exceptions are only supported in MMU mode. // DSI exceptions are only supported in MMU mode.