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iop rec: add constant propagation for COP2 

Inspirated from COP0
This commit is contained in:
Gregory Hainaut 2016-09-01 21:15:40 +02:00
parent bdc29dbbbf
commit 1ee0526e41
1 changed files with 50 additions and 1 deletions
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51
pcsx2/x86/iR3000Atables.cpp
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@ -1553,7 +1553,7 @@ void rpsxpropBSC(EEINST* prev, EEINST* pinst)
break;
case 16: rpsxpropCP0(prev, pinst); break;
case 18: pxFailDev( "iop invalid opcode in const propagation" ); break;
case 18: rpsxpropCP2(prev, pinst); break;
// stores
case 40: case 41: case 42: case 43: case 46:
@ -1690,3 +1690,52 @@ void rpsxpropCP0(EEINST* prev, EEINST* pinst)
jNO_DEFAULT
}
}
// Basic table:
// gteMFC2, psxNULL, gteCFC2, psxNULL, gteMTC2, psxNULL, gteCTC2, psxNULL,
// psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL,
// psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL,
// psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL, psxNULL
void rpsxpropCP2_basic(EEINST* prev, EEINST* pinst)
{
switch(_Rs_) {
case 0: // mfc2
case 2: // cfc2
rpsxpropSetWrite(_Rt_);
break;
case 4: // mtc2
case 6: // ctc2
rpsxpropSetRead(_Rt_);
break;
default:
pxFailDev( "iop invalid opcode in const propagation (rpsxpropCP2/BASIC)" );
break;
}
}
// Main table:
// psxBASIC, gteRTPS , psxNULL , psxNULL, psxNULL, psxNULL , gteNCLIP, psxNULL, // 00
// psxNULL , psxNULL , psxNULL , psxNULL, gteOP , psxNULL , psxNULL , psxNULL, // 08
// gteDPCS , gteINTPL, gteMVMVA, gteNCDS, gteCDP , psxNULL , gteNCDT , psxNULL, // 10
// psxNULL , psxNULL , psxNULL , gteNCCS, gteCC , psxNULL , gteNCS , psxNULL, // 18
// gteNCT , psxNULL , psxNULL , psxNULL, psxNULL, psxNULL , psxNULL , psxNULL, // 20
// gteSQR , gteDCPL , gteDPCT , psxNULL, psxNULL, gteAVSZ3, gteAVSZ4, psxNULL, // 28
// gteRTPT , psxNULL , psxNULL , psxNULL, psxNULL, psxNULL , psxNULL , psxNULL, // 30
// psxNULL , psxNULL , psxNULL , psxNULL, psxNULL, gteGPF , gteGPL , gteNCCT // 38
void rpsxpropCP2(EEINST* prev, EEINST* pinst)
{
switch(_Funct_) {
case 0: // Basic opcode
rpsxpropCP2_basic(prev, pinst);
break;
default:
// COP2 operation are likely done with internal COP2 registers
// No impact on GPR
break;
}
}