mirror of https://github.com/bsnes-emu/bsnes.git
114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
//80 grp1 memb,immb
|
|
//81 grp1 memw,immw
|
|
//82 grp1 memb,immbs
|
|
//83 grp1 memw,immbs
|
|
auto V30MZ::opGroup1MemImm(Size size, bool sign) {
|
|
modRM();
|
|
auto mem = getMem(size);
|
|
uint16 imm = 0;
|
|
if(sign) imm = (int8)fetch();
|
|
else if(size == Byte) imm = fetch();
|
|
else imm = fetch(Word);
|
|
switch(modrm.reg) {
|
|
case 0: setMem(size, alAdd(size, mem, imm)); break;
|
|
case 1: setMem(size, alOr (size, mem, imm)); break;
|
|
case 2: setMem(size, alAdc(size, mem, imm)); break;
|
|
case 3: setMem(size, alSbb(size, mem, imm)); break;
|
|
case 4: setMem(size, alAnd(size, mem, imm)); break;
|
|
case 5: setMem(size, alSub(size, mem, imm)); break;
|
|
case 6: setMem(size, alXor(size, mem, imm)); break;
|
|
case 7: alSub(size, mem, imm); break;
|
|
}
|
|
}
|
|
|
|
//c0 grp2 memb,imm8
|
|
//c1 grp2 memw,imm8
|
|
//d0 grp2 memb,1
|
|
//d1 grp2 memw,1
|
|
//d2 grp2 memb,cl
|
|
//d3 grp2 memw,cl
|
|
auto V30MZ::opGroup2MemImm(Size size, maybe<uint8> imm) {
|
|
modRM();
|
|
auto mem = getMem(size);
|
|
if(!imm) {
|
|
wait(2);
|
|
imm = fetch();
|
|
}
|
|
switch(modrm.reg) {
|
|
case 0: setMem(size, alRol(size, mem, *imm)); break;
|
|
case 1: setMem(size, alRor(size, mem, *imm)); break;
|
|
case 2: setMem(size, alRcl(size, mem, *imm)); break;
|
|
case 3: setMem(size, alRcr(size, mem, *imm)); break;
|
|
case 4: setMem(size, alShl(size, mem, *imm)); break;
|
|
case 5: setMem(size, alShr(size, mem, *imm)); break;
|
|
case 6: setMem(size, alSal(size, mem, *imm)); break;
|
|
case 7: setMem(size, alSar(size, mem, *imm)); break;
|
|
}
|
|
}
|
|
|
|
//f6 grp3 memb
|
|
//f7 grp3 memw
|
|
auto V30MZ::opGroup3MemImm(Size size) {
|
|
modRM();
|
|
auto mem = getMem(size);
|
|
switch(modrm.reg) {
|
|
case 0: alAnd(size, mem, fetch(size)); break;
|
|
case 1: debug("[V30MZ] GRP3.1"); break;
|
|
case 2: wait(2); setMem(size, alNot(size, mem)); break;
|
|
case 3: wait(2); setMem(size, alNeg(size, mem)); break;
|
|
case 4: wait(2); setAcc(size * 2, alMul(size, getAcc(size), mem)); break;
|
|
case 5: wait(2); setAcc(size * 2, alMuli(size, getAcc(size), mem)); break; break;
|
|
case 6: wait(size == Byte ? 15 : 23); setAcc(size * 2, alDiv(size, getAcc(size * 2), mem)); break;
|
|
case 7: wait(size == Byte ? 17 : 24); setAcc(size * 2, alDivi(size, getAcc(size * 2), mem)); break;
|
|
}
|
|
}
|
|
|
|
//fe grp4 memb
|
|
//ff grp4 memw
|
|
auto V30MZ::opGroup4MemImm(Size size) {
|
|
modRM();
|
|
switch(modrm.reg) {
|
|
case 0:
|
|
wait(2);
|
|
setMem(size, alInc(size, getMem(size)));
|
|
break;
|
|
case 1:
|
|
wait(2);
|
|
setMem(size, alDec(size, getMem(size)));
|
|
break;
|
|
case 2:
|
|
if(size == Byte) { debug("[V30MZ] GRP4.2"); break; }
|
|
wait(5);
|
|
push(r.ip);
|
|
r.ip = getMem(Word);
|
|
break;
|
|
case 3:
|
|
if(size == Byte) { debug("[V30MZ] GRP4.3"); break; }
|
|
wait(11);
|
|
push(r.cs);
|
|
push(r.ip);
|
|
r.ip = getMem(Word, 0);
|
|
r.cs = getMem(Word, 2);
|
|
break;
|
|
case 4:
|
|
if(size == Byte) { debug("[V30MZ] GRP4.4"); break; }
|
|
wait(4);
|
|
r.ip = getMem(Word);
|
|
break;
|
|
case 5:
|
|
if(size == Byte) { debug("[V30MZ] GRP4.5"); break; }
|
|
wait(9);
|
|
r.ip = getMem(Word, 0);
|
|
r.cs = getMem(Word, 2);
|
|
break;
|
|
case 6:
|
|
if(size == Byte) { debug("[V30MZ] GRP4.6"); break; }
|
|
wait(1);
|
|
push(getMem(Word));
|
|
break;
|
|
case 7:
|
|
debug("[V30MZ] GRP4.7");
|
|
break;
|
|
}
|
|
}
|