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add cheat code DFFFFFFF 77777777/99999999 for enabling emulator hacks and allowing access to the ARM9. I didn't test this, I may have broken some cheats

This commit is contained in:
zeromus 2017-04-08 00:57:01 -05:00
parent 5172e1c1f3
commit d141d13705
1 changed files with 43 additions and 25 deletions
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68
desmume/src/cheatSystem.cpp
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@ -87,6 +87,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//TODO: v154 special stuff
bool v154 = true; //on advice of power users, v154 is so old, we can assume all cheats use it
bool vEmulator = true;
struct {
//LSB is
@ -109,9 +110,13 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//registers
u32 offset, data;
//nu fake registers
int proc;
} st;
memset(&st,0,sizeof(st));
st.proc = ARMCPU_ARM7;
CHEATLOG("-----------------------------------\n");
@ -164,7 +169,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
x = hi & 0x0FFFFFFF;
y = lo;
addr = x + st.offset;
_MMU_write32<ARMCPU_ARM7,MMU_AT_DEBUG>(addr, y);
_MMU_write32(st.proc,MMU_AT_DEBUG,addr, y);
break;
case 0x01:
@ -174,7 +179,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
x = hi & 0x0FFFFFFF;
y = lo & 0xFFFF;
addr = x + st.offset;
_MMU_write16<ARMCPU_ARM7,MMU_AT_DEBUG>(addr, y);
_MMU_write16(st.proc,MMU_AT_DEBUG,addr, y);
break;
case 0x02:
@ -184,7 +189,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
x = hi & 0x0FFFFFFF;
y = lo & 0xFF;
addr = x + st.offset;
_MMU_write08<ARMCPU_ARM7,MMU_AT_DEBUG>(addr, y);
_MMU_write08(st.proc,MMU_AT_DEBUG,addr, y);
break;
case 0x03:
@ -195,7 +200,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
x = hi & 0x0FFFFFFF;
y = lo;
if(v154) if(x == 0) x = st.offset;
operand = _MMU_read32<ARMCPU_ARM7,MMU_AT_DEBUG>(x);
operand = _MMU_read32(st.proc,MMU_AT_DEBUG,x);
if(y > operand) st.status &= ~1;
break;
@ -207,7 +212,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
x = hi & 0x0FFFFFFF;
y = lo;
if(v154) if(x == 0) x = st.offset;
operand = _MMU_read32<ARMCPU_ARM7,MMU_AT_DEBUG>(x);
operand = _MMU_read32(st.proc,MMU_AT_DEBUG,x);
if(y < operand) st.status &= ~1;
break;
@ -219,7 +224,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
x = hi & 0x0FFFFFFF;
y = lo;
if(v154) if(x == 0) x = st.offset;
operand = _MMU_read32<ARMCPU_ARM7,MMU_AT_DEBUG>(x);
operand = _MMU_read32(st.proc,MMU_AT_DEBUG,x);
if(y == operand) st.status &= ~1;
break;
@ -231,7 +236,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
x = hi & 0x0FFFFFFF;
y = lo;
if(v154) if(x == 0) x = st.offset;
operand = _MMU_read32<ARMCPU_ARM7,MMU_AT_DEBUG>(x);
operand = _MMU_read32(st.proc,MMU_AT_DEBUG,x);
if(y != operand) st.status &= ~1;
break;
@ -244,7 +249,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
y = lo&0xFFFF;
z = lo>>16;
if(v154) if(x == 0) x = st.offset;
operand = _MMU_read16<ARMCPU_ARM7,MMU_AT_DEBUG>(x);
operand = _MMU_read16(st.proc,MMU_AT_DEBUG,x);
if(y > (u16)( (~z) & operand) ) st.status &= ~1;
break;
@ -257,7 +262,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
y = lo&0xFFFF;
z = lo>>16;
if(v154) if(x == 0) x = st.offset;
operand = _MMU_read16<ARMCPU_ARM7,MMU_AT_DEBUG>(x);
operand = _MMU_read16(st.proc,MMU_AT_DEBUG,x);
if(y < (u16)( (~z) & operand) ) st.status &= ~1;
break;
@ -270,7 +275,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
y = lo&0xFFFF;
z = lo>>16;
if(v154) if(x == 0) x = st.offset;
operand = _MMU_read16<ARMCPU_ARM7,MMU_AT_DEBUG>(x);
operand = _MMU_read16(st.proc,MMU_AT_DEBUG,x);
if(y == (u16)( (~z) & operand) ) st.status &= ~1;
break;
@ -283,7 +288,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
y = lo&0xFFFF;
z = lo>>16;
if(v154) if(x == 0) x = st.offset;
operand = _MMU_read16<ARMCPU_ARM7,MMU_AT_DEBUG>(x);
operand = _MMU_read16(st.proc,MMU_AT_DEBUG,x);
if(y != (u16)( (~z) & operand) ) st.status &= ~1;
break;
@ -294,7 +299,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//Offset = word at [0XXXXXXX + offset].
x = hi & 0x0FFFFFFF;
addr = x + st.offset;
st.offset = _MMU_read32<ARMCPU_ARM7,MMU_AT_DEBUG>(addr);
st.offset = _MMU_read32(st.proc,MMU_AT_DEBUG,addr);
break;
case 0xC0:
@ -334,7 +339,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//<gbatek> C6000000 XXXXXXXX [XXXXXXXX]=offset
if(!v154) break;
x = lo;
_MMU_write32<ARMCPU_ARM7,MMU_AT_DEBUG>(x, st.offset);
_MMU_write32(st.proc,MMU_AT_DEBUG,x, st.offset);
break;
case 0xD0:
@ -379,6 +384,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
{
//<gbatek> The NEXT+FLUSH command does (after finishing the loop) reset offset=0, datareg=0, and does clear all condition flags, so further ENDIF(s) aren't required after the loop.
memset(&st,0,sizeof(st));
st.proc = ARMCPU_ARM7;
}
break;
@ -414,7 +420,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//<gbatek> word[XXXXXXXX+offset]=datareg, offset=offset+4
x = lo;
addr = x + st.offset;
_MMU_write32<ARMCPU_ARM7,MMU_AT_DEBUG>(addr, st.data);
_MMU_write32(st.proc,MMU_AT_DEBUG,addr, st.data);
st.offset += 4;
break;
@ -425,7 +431,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//<gbatek> half[XXXXXXXX+offset]=datareg, offset=offset+2
x = lo;
addr = x + st.offset;
_MMU_write16<ARMCPU_ARM7,MMU_AT_DEBUG>(addr, st.data);
_MMU_write16(st.proc,MMU_AT_DEBUG,addr, st.data);
st.offset += 2;
break;
@ -436,7 +442,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//<gbatek> byte[XXXXXXXX+offset]=datareg, offset=offset+1
x = lo;
addr = x + st.offset;
_MMU_write08<ARMCPU_ARM7,MMU_AT_DEBUG>(addr, st.data);
_MMU_write08(st.proc,MMU_AT_DEBUG,addr, st.data);
st.offset += 1;
break;
@ -446,7 +452,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//Loads the word at [XXXXXXXX+offset] and stores it in the'Dx data register'.
x = lo;
addr = x + st.offset;
st.data = _MMU_read32<ARMCPU_ARM7,MMU_AT_DEBUG>(addr);
st.data = _MMU_read32(st.proc,MMU_AT_DEBUG,addr);
break;
case 0xDA:
@ -455,7 +461,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//Loads the halfword at [XXXXXXXX+offset] and stores it in the'Dx data register'.
x = lo;
addr = x + st.offset;
st.data = _MMU_read16<ARMCPU_ARM7,MMU_AT_DEBUG>(addr);
st.data = _MMU_read16(st.proc,MMU_AT_DEBUG,addr);
break;
case 0xDB:
@ -465,7 +471,7 @@ void CHEATS::ARparser(CHEATS_LIST& list)
//This is a bugged code type. Check 'AR Hack #0' for the fix.
x = lo;
addr = x + st.offset;
st.data = _MMU_read08<ARMCPU_ARM7,MMU_AT_DEBUG>(addr);
st.data = _MMU_read08(st.proc,MMU_AT_DEBUG,addr);
//<gbatek> Before v1.54, the DB000000 code did accidently set offset=offset+XXXXXXX after execution of the code
if(!v154)
st.offset = addr;
@ -479,6 +485,18 @@ void CHEATS::ARparser(CHEATS_LIST& list)
st.offset += x;
break;
case 0xDF:
if(vEmulator)
{
if(hi == 0xDFFFFFFF) {
if(lo == 0x99999999)
st.proc = ARMCPU_ARM9;
else if(lo == 0x77777777)
st.proc = ARMCPU_ARM7;
}
}
break;
case 0x0E:
//Patch Code (Miscellaneous Memory Manipulation Codes)
//EXXXXXXX YYYYYYYY
@ -498,14 +516,14 @@ void CHEATS::ARparser(CHEATS_LIST& list)
u32 tmp = list.code[i][t];
if(t==1) i++;
t ^= 1;
_MMU_write32<ARMCPU_ARM7,MMU_AT_DEBUG>(addr,tmp);
_MMU_write32(st.proc,MMU_AT_DEBUG,addr,tmp);
addr += 4;
y -= 4;
}
while(y>0)
{
u32 tmp = list.code[i][t]>>b;
_MMU_write08<ARMCPU_ARM7,MMU_AT_DEBUG>(addr,tmp);
_MMU_write08(st.proc,MMU_AT_DEBUG,addr,tmp);
addr += 1;
y -= 1;
b += 4;
@ -525,16 +543,16 @@ void CHEATS::ARparser(CHEATS_LIST& list)
operand = x; //mis-use of this variable to store dst
while(y>=4)
{
u32 tmp = _MMU_read32<ARMCPU_ARM7,MMU_AT_DEBUG>(addr);
_MMU_write32<ARMCPU_ARM7,MMU_AT_DEBUG>(operand,tmp);
u32 tmp = _MMU_read32(st.proc,MMU_AT_DEBUG,addr);
_MMU_write32(st.proc,MMU_AT_DEBUG,operand,tmp);
addr += 4;
operand += 4;
y -= 4;
}
while(y>0)
{
u8 tmp = _MMU_read08<ARMCPU_ARM7,MMU_AT_DEBUG>(addr);
_MMU_write08<ARMCPU_ARM7,MMU_AT_DEBUG>(operand,tmp);
u8 tmp = _MMU_read08(st.proc,MMU_AT_DEBUG,addr);
_MMU_write08(st.proc,MMU_AT_DEBUG,operand,tmp);
addr += 1;
operand += 1;
y -= 1;