mirror of https://github.com/bsnes-emu/bsnes.git
79 lines
2.4 KiB
C++
79 lines
2.4 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);
|
|
auto imm = sign ? (int8_t)fetch() : size == Byte ? fetch() : 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: 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();
|
|
auto mem = getMem(size);
|
|
switch(modrm.reg) {
|
|
case 0: wait(2); setMem(size, alInc(size, mem)); break;
|
|
case 1: wait(2); setMem(size, alDec(size, mem)); break;
|
|
case 2: break;
|
|
case 3: break;
|
|
case 4: break;
|
|
case 5: break;
|
|
case 6: break;
|
|
case 7: break;
|
|
}
|
|
}
|