ShuriZma
/
melonDS
mirror of https://github.com/melonDS-emu/melonDS.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

well, more AR shito

This commit is contained in:
Arisotura 2020-02-14 21:19:36 +01:00
parent 83f8e11bc1
commit eb44833171
1 changed files with 146 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

152
src/AREngine.cpp
View File

@ -53,10 +53,10 @@ void Reset()
NumCheatCodes = 0;
// TODO: acquire codes from a sensible source!
#define TEMP_PUTCODE(a, b) *ptr++ = a; *ptr++ = b;
CheatEntry* entry = &CheatCodes[0];
u32* ptr = &entry->Code[0];
#define TEMP_PUTCODE(a, b) *ptr++ = a; *ptr++ = b;
// NSMBDS EUR - giant fucking Mario
/*// NSMBDS EUR - giant fucking Mario
TEMP_PUTCODE(0x1209DBD0, 0x0000027C);
TEMP_PUTCODE(0x2209DBC0, 0x00000003);
TEMP_PUTCODE(0x94000130, 0xFFFD0000);
@ -64,6 +64,44 @@ void Reset()
TEMP_PUTCODE(0x2209DBC0, 0x00000003);
entry->Enabled = true;
NumCheatCodes++;
entry = &CheatCodes[1];
ptr = &entry->Code[0];*/
// NSMBDS EUR - jump to the sky
/*TEMP_PUTCODE(0x9209DC90, 0xFFFD0002);
TEMP_PUTCODE(0x920DC910, 0x00000000);
TEMP_PUTCODE(0x021C1944, 0x00004000);
TEMP_PUTCODE(0xD2000000, 0x00000000);
TEMP_PUTCODE(0x9209DC90, 0xFFFE0001);
TEMP_PUTCODE(0x920DC910, 0x00000000);
TEMP_PUTCODE(0x021C1944, 0x00004000);
TEMP_PUTCODE(0xD2000000, 0x00000000);*/
// SM64DS EUR redcoin
/*TEMP_PUTCODE(0x0210CC3E, 0x00000121);
TEMP_PUTCODE(0x5209F30C, 0x00000008);
TEMP_PUTCODE(0x0209F30C, 0x00000000);
TEMP_PUTCODE(0xD2000000, 0x00000000);*/
// SM64DS EUR shroom-o-matic
/*TEMP_PUTCODE(0x9209D09A , 0x00000000);
TEMP_PUTCODE(0x6209B468 , 0x00000000);
TEMP_PUTCODE(0xB209B468 , 0x00000000);
TEMP_PUTCODE(0x10000672 , 0x000003FF);
TEMP_PUTCODE(0xD2000000 , 0x00000000);
TEMP_PUTCODE(0x9209D09A , 0x00000000);
TEMP_PUTCODE(0x94000130 , 0xFCBF0000);
TEMP_PUTCODE(0x6209B468 , 0x00000000);
TEMP_PUTCODE(0xB209B468 , 0x00000000);
TEMP_PUTCODE(0x200006B3 , 0x00000001);
TEMP_PUTCODE(0x200006B4 , 0x00000001);
TEMP_PUTCODE(0xD2000000 , 0x00000000);
TEMP_PUTCODE(0x9209D09A , 0x00000000);
TEMP_PUTCODE(0x94000130 , 0xFC7F0000);
TEMP_PUTCODE(0x6209B468 , 0x00000000);
TEMP_PUTCODE(0xB209B468 , 0x00000000);
TEMP_PUTCODE(0x10000672 , 0x00000000);
TEMP_PUTCODE(0xD2000000 , 0x00000000);*/
entry->Enabled = true;
NumCheatCodes++;
}
@ -77,6 +115,8 @@ void RunCheat(CheatEntry* entry)
{
u32* code = &entry->Code[0];
u32 offset = 0;
u32 datareg = 0;
u32 cond = 1;
u32 condstack = 0;
@ -100,18 +140,88 @@ void RunCheat(CheatEntry* entry)
switch (op)
{
case16(0x00): // 32-bit write
NDS::ARM7Write32(a & 0x0FFFFFFF, b);
NDS::ARM7Write32((a & 0x0FFFFFFF) + offset, b);
break;
case16(0x10): // 16-bit write
NDS::ARM7Write16(a & 0x0FFFFFFF, b & 0xFFFF);
NDS::ARM7Write16((a & 0x0FFFFFFF) + offset, b & 0xFFFF);
break;
case16(0x20): // 8-bit write
NDS::ARM7Write8(a & 0x0FFFFFFF, b & 0xFF);
NDS::ARM7Write8((a & 0x0FFFFFFF) + offset, b & 0xFF);
break;
case16(0x90): // IF b.l = ((~b.h) & u16[a])
case16(0x30): // IF b > u32[a]
{
condstack <<= 1;
condstack |= cond;
u32 chk = NDS::ARM7Read32(a & 0x0FFFFFFF);
cond = (b > chk) ? 1:0;
}
break;
case16(0x40): // IF b < u32[a]
{
condstack <<= 1;
condstack |= cond;
u32 chk = NDS::ARM7Read32(a & 0x0FFFFFFF);
cond = (b < chk) ? 1:0;
}
break;
case16(0x50): // IF b == u32[a]
{
condstack <<= 1;
condstack |= cond;
u32 chk = NDS::ARM7Read32(a & 0x0FFFFFFF);
cond = (b == chk) ? 1:0;
}
break;
case16(0x60): // IF b != u32[a]
{
condstack <<= 1;
condstack |= cond;
u32 chk = NDS::ARM7Read32(a & 0x0FFFFFFF);
cond = (b != chk) ? 1:0;
}
break;
case16(0x70): // IF b.l > ((~b.h) & u16[a])
{
condstack <<= 1;
condstack |= cond;
u16 val = NDS::ARM7Read16(a & 0x0FFFFFFF);
u16 chk = ~(b >> 16);
chk &= val;
cond = ((b & 0xFFFF) > chk) ? 1:0;
}
break;
case16(0x80): // IF b.l < ((~b.h) & u16[a])
{
condstack <<= 1;
condstack |= cond;
u16 val = NDS::ARM7Read16(a & 0x0FFFFFFF);
u16 chk = ~(b >> 16);
chk &= val;
cond = ((b & 0xFFFF) < chk) ? 1:0;
}
break;
case16(0x90): // IF b.l == ((~b.h) & u16[a])
{
condstack <<= 1;
condstack |= cond;
@ -124,6 +234,36 @@ void RunCheat(CheatEntry* entry)
}
break;
case16(0xA0): // IF b.l != ((~b.h) & u16[a])
{
condstack <<= 1;
condstack |= cond;
u16 val = NDS::ARM7Read16(a & 0x0FFFFFFF);
u16 chk = ~(b >> 16);
chk &= val;
cond = ((b & 0xFFFF) != chk) ? 1:0;
}
break;
case16(0xB0): // offset = u32[a + offset]
offset = NDS::ARM7Read32((a & 0x0FFFFFFF) + offset);
break;
case 0xD0: // ENDIF
cond = condstack & 0x1;
condstack >>= 1;
break;
case 0xD2: // NEXT+FLUSH
// TODO: loop shenanigans!
offset = 0;
datareg = 0;
condstack = 0;
cond = 1;
break;
default:
printf("!! bad AR opcode %08X %08X\n", a, b);
return;