mirror of
https://github.com/libretro/beetle-gba-libretro.git
synced 2024-11-27 10:30:29 +00:00
Update mempatcher.cpp
Updates mempatched.cpp to more recent sources. This does not fix or enable cheats though, just removes file related operations, some erroneous logs, etc
This commit is contained in:
retro-wertz
parent
a579c299c5
commit
c9e4443b50
@ -23,7 +23,6 @@
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#include <vector>
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#include "general.h"
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#include "md5.h"
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#include "mempatcher.h"
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#ifdef _WIN32
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@ -34,12 +33,6 @@ static uint8 **RAMPtrs = NULL;
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static uint32 PageSize;
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static uint32 NumPages;
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typedef struct
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{
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bool excluded;
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uint8 value;
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} CompareStruct;
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typedef struct __CHEATF
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{
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char *name;
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@ -57,7 +50,7 @@ typedef struct __CHEATF
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} CHEATF;
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static std::vector<CHEATF> cheats;
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static CompareStruct **CheatComp = NULL;
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static int savecheats;
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static uint32 resultsbytelen = 1;
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static bool resultsbigendian = 0;
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static bool CheatsActive = TRUE;
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@ -108,7 +101,6 @@ bool MDFNMP_Init(uint32 ps, uint32 numpages)
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NumPages = numpages;
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RAMPtrs = (uint8 **)calloc(numpages, sizeof(uint8 *));
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CheatComp = (CompareStruct **)calloc(numpages, sizeof(CompareStruct *));
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CheatsActive = MDFN_GetSettingB("cheats");
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return(1);
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@ -116,11 +108,6 @@ bool MDFNMP_Init(uint32 ps, uint32 numpages)
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void MDFNMP_Kill(void)
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{
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if(CheatComp)
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{
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free(CheatComp);
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CheatComp = NULL;
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}
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if(RAMPtrs)
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{
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free(RAMPtrs);
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@ -145,17 +132,19 @@ void MDFNMP_AddRAM(uint32 size, uint32 A, uint8 *RAM)
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void MDFNMP_InstallReadPatches(void)
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{
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unsigned x;
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std::vector<SUBCHEAT>::iterator chit;
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if(!CheatsActive) return;
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std::vector<SUBCHEAT>::iterator chit;
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#if 0
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for(unsigned int x = 0; x < 8; x++)
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for(x = 0; x < 8; x++)
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{
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for(chit = SubCheats[x].begin(); chit != SubCheats[x].end(); chit++)
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{
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if(MDFNGameInfo->InstallReadPatch)
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MDFNGameInfo->InstallReadPatch(chit->addr);
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}
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}
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#endif
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}
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@ -193,143 +182,13 @@ static int AddCheatEntry(char *name, char *conditions, uint32 addr, uint64 val,
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return(1);
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}
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static bool SeekToOurSection(void *fp_ptr)
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{
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FILE *fp = (FILE*)fp_ptr;
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char buf[2048];
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while(fgets(buf,2048,fp) != NULL)
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{
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if(buf[0] == '[')
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{
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if(!strncmp((char *)buf + 1, md5_context::asciistr(MDFNGameInfo->MD5, 0).c_str(), 16))
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return(1);
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}
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}
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return(0);
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}
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void MDFN_LoadGameCheats(void *override_ptr)
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{
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char linebuf[2048];
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FILE *fp;
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FILE *override = (FILE*)override_ptr;
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unsigned int addr;
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unsigned long long val;
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unsigned int status;
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char type;
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unsigned long long compare;
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unsigned int x;
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unsigned int length;
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unsigned int icount;
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bool bigendian;
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int tc=0;
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if(override)
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fp = override;
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else
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{
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std::string fn = MDFN_MakeFName(MDFNMKF_CHEAT,0,0).c_str();
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MDFN_printf("\n");
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MDFN_printf(_("Loading cheats from %s...\n"), fn.c_str());
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MDFN_indent(1);
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if(!(fp = fopen(fn.c_str(),"rb")))
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{
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ErrnoHolder ene(errno);
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MDFN_printf(_("Error opening file: %s\n"), ene.StrError());
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MDFN_indent(-1);
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return;
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}
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}
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if(SeekToOurSection(fp))
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{
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while(fgets(linebuf,2048,fp) != NULL)
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{
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char namebuf[2048];
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char *tbuf=linebuf;
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addr=val=compare=status=type=0;
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bigendian = 0;
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icount = 0;
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if(tbuf[0] == '[') // No more cheats for this game, so sad :(
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{
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break;
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}
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if(tbuf[0] == '\n' || tbuf[0] == '\r' || tbuf[0] == '\t' || tbuf[0] == ' ') // Don't parse if the line starts(or is just) white space
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continue;
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if(tbuf[0] != 'R' && tbuf[0] != 'C' && tbuf[0] != 'S')
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{
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MDFN_printf(_("Invalid cheat type: %c\n"), tbuf[0]);
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break;
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}
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type = tbuf[0];
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namebuf[0] = 0;
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char status_tmp, endian_tmp;
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if(type == 'C')
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sscanf(tbuf, "%c %c %d %c %d %08x %16llx %16llx %2047[^\r\n]", &type, &status_tmp, &length, &endian_tmp, &icount, &addr, &val, &compare, namebuf);
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else
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sscanf(tbuf, "%c %c %d %c %d %08x %16llx %2047[^\r\n]", &type, &status_tmp, &length, &endian_tmp, &icount, &addr, &val, namebuf);
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status = (status_tmp == 'A') ? 1 : 0;
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bigendian = (endian_tmp == 'B') ? 1 : 0;
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for(x=0;x<strlen(namebuf);x++)
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{
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if(namebuf[x]==10 || namebuf[x]==13)
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{
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namebuf[x]=0;
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break;
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}
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else if(namebuf[x]<0x20) namebuf[x]=' ';
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}
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// November 9, 2009 return value fix.
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if(fgets(linebuf, 2048, fp) == NULL)
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linebuf[0] = 0;
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for(x=0;x<strlen(linebuf);x++)
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{
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if(linebuf[x]==10 || linebuf[x]==13)
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{
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linebuf[x]=0;
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break;
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}
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else if(linebuf[x]<0x20) linebuf[x]=' ';
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}
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AddCheatEntry(strdup(namebuf), strdup(linebuf), addr, val, compare, status, type, length, bigendian);
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tc++;
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}
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}
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RebuildSubCheats();
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if(!override)
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{
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MDFN_printf(_("%lu cheats loaded.\n"), (unsigned long)cheats.size());
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MDFN_indent(-1);
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fclose(fp);
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}
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}
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void MDFN_FlushGameCheats(int nosave)
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{
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if(CheatComp)
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{
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free(CheatComp);
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CheatComp = 0;
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}
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std::vector<CHEATF>::iterator chit;
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for(chit = cheats.begin(); chit != cheats.end(); chit++)
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@ -339,6 +198,7 @@ void MDFN_FlushGameCheats(int nosave)
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free(chit->conditions);
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}
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cheats.clear();
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RebuildSubCheats();
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}
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@ -358,6 +218,8 @@ int MDFNI_AddCheat(const char *name, uint32 addr, uint64 val, uint64 compare, ch
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return(0);
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}
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savecheats = 1;
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MDFNMP_RemoveReadPatches();
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RebuildSubCheats();
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MDFNMP_InstallReadPatches();
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@ -370,6 +232,8 @@ int MDFNI_DelCheat(uint32 which)
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free(cheats[which].name);
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cheats.erase(cheats.begin() + which);
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savecheats=1;
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MDFNMP_RemoveReadPatches();
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RebuildSubCheats();
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MDFNMP_InstallReadPatches();
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@ -433,7 +297,6 @@ static bool TestConditions(const char *string)
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v_value = strtoull(value, NULL, 0);
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value_at_address = 0;
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#if 0
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for(unsigned int x = 0; x < bytelen; x++)
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{
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@ -443,7 +306,7 @@ static bool TestConditions(const char *string)
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shiftie = (bytelen - 1 - x) * 8;
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else
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shiftie = x * 8;
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value_at_address |= MDFNGameInfo->MemRead(v_address + x) << shiftie;
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value_at_address |= MemRead(v_address + x) << shiftie;
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}
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#endif
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@ -525,12 +388,9 @@ void MDFNMP_ApplyPeriodicCheats(void)
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{
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std::vector<CHEATF>::iterator chit;
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if(!CheatsActive)
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return;
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//TestConditions("2 L 0x1F00F5 == 0xDEAD");
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//if(TestConditions("1 L 0x1F0058 > 0")) //, 1 L 0xC000 == 0x01"));
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for(chit = cheats.begin(); chit != cheats.end(); chit++)
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{
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if(chit->status && chit->type == 'R')
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@ -782,6 +642,7 @@ int MDFNI_SetCheat(uint32 which, const char *name, uint32 a, uint64 v, uint64 co
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next->bigendian = bigendian;
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RebuildSubCheats();
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savecheats=1;
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return(1);
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}
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@ -790,207 +651,12 @@ int MDFNI_SetCheat(uint32 which, const char *name, uint32 a, uint64 v, uint64 co
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int MDFNI_ToggleCheat(uint32 which)
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{
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cheats[which].status = !cheats[which].status;
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savecheats = 1;
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RebuildSubCheats();
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return(cheats[which].status);
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}
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void MDFNI_CheatSearchSetCurrentAsOriginal(void)
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{
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for(uint32 page = 0; page < NumPages; page++)
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{
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if(CheatComp[page])
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{
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for(uint32 addr = 0; addr < PageSize; addr++)
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{
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if(!CheatComp[page][addr].excluded)
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{
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CheatComp[page][addr].value = RAMPtrs[page][addr];
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}
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}
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}
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}
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}
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void MDFNI_CheatSearchShowExcluded(void)
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{
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for(uint32 page = 0; page < NumPages; page++)
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{
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if(CheatComp[page])
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{
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for(uint32 addr = 0; addr < PageSize; addr++)
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{
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CheatComp[page][addr].excluded = 0;
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}
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}
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}
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}
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int32 MDFNI_CheatSearchGetCount(void)
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{
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uint32 count = 0;
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for(uint32 page = 0; page < NumPages; page++)
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{
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if(CheatComp[page])
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{
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for(uint32 addr = 0; addr < PageSize; addr++)
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{
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if(!CheatComp[page][addr].excluded)
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count++;
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}
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}
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}
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return count;
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}
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/* This function will give the initial value of the search and the current value at a location. */
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void MDFNI_CheatSearchGet(int (*callb)(uint32 a, uint64 last, uint64 current, void *data), void *data)
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{
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for(uint32 page = 0; page < NumPages; page++)
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{
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if(CheatComp[page])
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{
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for(uint32 addr = 0; addr < PageSize; addr++)
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{
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if(!CheatComp[page][addr].excluded)
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{
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uint64 ccval;
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uint64 ramval;
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ccval = ramval = 0;
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for(unsigned int x = 0; x < resultsbytelen; x++)
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{
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uint32 curpage = (page + (addr + x) / PageSize) % NumPages;
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if(CheatComp[curpage])
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{
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unsigned int shiftie;
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if(resultsbigendian)
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shiftie = (resultsbytelen - 1 - x) * 8;
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else
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shiftie = x * 8;
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ccval |= CheatComp[curpage][(addr + x) % PageSize].value << shiftie;
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ramval |= RAMPtrs[curpage][(addr + x) % PageSize] << shiftie;
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}
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}
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if(!callb(page * PageSize + addr, ccval, ramval, data))
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return;
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}
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}
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}
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}
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}
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void MDFNI_CheatSearchBegin(void)
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{
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resultsbytelen = 1;
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resultsbigendian = 0;
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for(uint32 page = 0; page < NumPages; page++)
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{
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if(RAMPtrs[page])
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{
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if(!CheatComp[page])
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CheatComp[page] = (CompareStruct *)calloc(PageSize, sizeof(CompareStruct));
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for(uint32 addr = 0; addr < PageSize; addr++)
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{
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CheatComp[page][addr].excluded = 0;
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CheatComp[page][addr].value = RAMPtrs[page][addr];
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}
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}
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}
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}
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static uint64 INLINE CAbs(uint64 x)
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{
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if(x < 0)
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return(0 - x);
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return x;
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}
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void MDFNI_CheatSearchEnd(int type, uint64 v1, uint64 v2, unsigned int bytelen, bool bigendian)
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{
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v1 &= (~0ULL) >> (8 - bytelen);
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v2 &= (~0ULL) >> (8 - bytelen);
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resultsbytelen = bytelen;
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resultsbigendian = bigendian;
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for(uint32 page = 0; page < NumPages; page++)
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{
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if(CheatComp[page])
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{
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for(uint32 addr = 0; addr < PageSize; addr++)
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{
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if(!CheatComp[page][addr].excluded)
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{
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bool doexclude = 0;
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uint64 ccval;
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uint64 ramval;
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ccval = ramval = 0;
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for(unsigned int x = 0; x < bytelen; x++)
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{
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uint32 curpage = (page + (addr + x) / PageSize) % NumPages;
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if(CheatComp[curpage])
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{
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unsigned int shiftie;
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if(bigendian)
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shiftie = (bytelen - 1 - x) * 8;
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else
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shiftie = x * 8;
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ccval |= CheatComp[curpage][(addr + x) % PageSize].value << shiftie;
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ramval |= RAMPtrs[curpage][(addr + x) % PageSize] << shiftie;
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}
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}
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switch(type)
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{
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case 0: // Change to a specific value.
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if(!(ccval == v1 && ramval == v2))
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doexclude = 1;
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break;
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case 1: // Search for relative change(between values).
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if(!(ccval == v1 && CAbs(ccval - ramval) == v2))
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doexclude = 1;
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break;
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case 2: // Purely relative change.
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if(!(CAbs(ccval - ramval) == v2))
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doexclude = 1;
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break;
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case 3: // Any change
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if(!(ccval != ramval))
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doexclude = 1;
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break;
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case 4: // Value decreased
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if(ramval >= ccval)
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doexclude = 1;
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break;
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case 5: // Value increased
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if(ramval <= ccval)
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doexclude = 1;
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break;
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}
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if(doexclude)
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CheatComp[page][addr].excluded = TRUE;
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}
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}
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}
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}
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if(type >= 4)
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MDFNI_CheatSearchSetCurrentAsOriginal();
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}
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static void SettingChanged(const char *name)
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{
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MDFNMP_RemoveReadPatches();
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@ -1002,7 +668,6 @@ static void SettingChanged(const char *name)
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MDFNMP_InstallReadPatches();
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}
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MDFNSetting MDFNMP_Settings[] =
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{
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{ "cheats", MDFNSF_NOFLAGS, "Enable cheats.", NULL, MDFNST_BOOL, "1", NULL, NULL, NULL, SettingChanged },
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