src/CheatSearch.h

   1 // -*- C++ -*-
   2 // VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
   3 // Copyright (C) 1999-2003 Forgotten
   4 // Copyright (C) 2004 Forgotten and the VBA development team
   5
   6 // This program is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 2, or(at your option)
   9 // any later version.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software Foundation,
  18 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19
  20 #ifndef VBA_CHEATSEARCH_H
  21 #define VBA_CHEATSEARCH_H
  22
  23 #include "System.h"
  24
  25 struct CheatSearchBlock {
  26   int size;
  27   u32 offset;
  28   u8 *bits;
  29   u8 *data;
  30   u8 *saved;
  31 };
  32
  33 struct CheatSearchData {
  34   int count;
  35   CheatSearchBlock *blocks;
  36 };
  37
  38 enum {
  39   SEARCH_EQ,
  40   SEARCH_NE,
  41   SEARCH_LT,
  42   SEARCH_LE,
  43   SEARCH_GT,
  44   SEARCH_GE
  45 };
  46
  47 enum {
  48   BITS_8,
  49   BITS_16,
  50   BITS_32
  51 };
  52
  53 #define SET_BIT(bits,off) \
  54   (bits)[(off) >> 3] |= (1 << ((off) & 7))
  55
  56 #define CLEAR_BIT(bits, off) \
  57   (bits)[(off) >> 3] &= ~(1 << ((off) & 7))
  58
  59 #define IS_BIT_SET(bits, off) \
  60   (bits)[(off) >> 3] & (1 << ((off) & 7))
  61
  62 extern CheatSearchData cheatSearchData;
  63 extern void cheatSearchCleanup(CheatSearchData *cs);
  64 extern void cheatSearchStart(const CheatSearchData *cs);
  65 extern void cheatSearch(const CheatSearchData *cs, int compare, int size,
  66                         bool isSigned);
  67 extern void cheatSearchValue(const CheatSearchData *cs, int compare, int size,
  68                              bool isSigned, u32 value);
  69 extern int cheatSearchGetCount(const CheatSearchData *cs, int size);
  70 extern void cheatSearchUpdateValues(const CheatSearchData *cs);
  71 extern s32 cheatSearchSignedRead(u8 *data, int off, int size);
  72 extern u32 cheatSearchRead(u8 *data, int off, int size);
  73 #endif