void _deleteEEreg(int reg, int flush)
{
if( !reg ) return;
if( flush && GPR_IS_CONST1(reg) ) {
_flushConstReg(reg);
}
GPR_DEL_CONST(reg);
_deleteGPRtoXMMreg(reg, flush ? 0 : 2);
_deleteMMXreg(MMX_GPR+reg, flush ? 0 : 2);
}
void _flushEEreg(int reg)
{
if (!reg) return;
if (GPR_IS_CONST1(reg)) {
_flushConstReg(reg);
return;
}
_deleteGPRtoXMMreg(reg, 1);
_deleteMMXreg(MMX_GPR + reg, 1);
}
int _allocGPRtoXMMreg(int xmmreg, int gprreg, int mode)
{
int i;
for (i=0; (uint)i<iREGCNT_XMM; i++)
{
if (xmmregs[i].inuse == 0) continue;
if (xmmregs[i].type != XMMTYPE_GPRREG) continue;
if (xmmregs[i].reg != gprreg) continue;
pxAssert( _checkMMXreg(MMX_GPR|gprreg, mode) == -1 );
g_xmmtypes[i] = XMMT_INT;
if (!(xmmregs[i].mode & MODE_READ) && (mode & MODE_READ))
{
if (gprreg == 0 )
{
SSEX_PXOR_XMM_to_XMM(i, i);
}
else
{
//pxAssert( !(g_cpuHasConstReg & (1<<gprreg)) || (g_cpuFlushedConstReg & (1<<gprreg)) );
_flushConstReg(gprreg);
SSEX_MOVDQA_M128_to_XMM(i, (uptr)&cpuRegs.GPR.r[gprreg].UL[0]);
}
xmmregs[i].mode |= MODE_READ;
}
if ((mode & MODE_WRITE) && (gprreg < 32))
{
g_cpuHasConstReg &= ~(1<<gprreg);
//pxAssert( !(g_cpuHasConstReg & (1<<gprreg)) );
}
xmmregs[i].counter = g_xmmAllocCounter++; // update counter
xmmregs[i].needed = 1;
xmmregs[i].mode|= mode;
return i;
}
// currently only gpr regs are const
// fixme - do we really need to execute this both here and in the loop?
if ((mode & MODE_WRITE) && gprreg < 32)
{
//pxAssert( !(g_cpuHasConstReg & (1<<gprreg)) );
g_cpuHasConstReg &= ~(1<<gprreg);
}
if (xmmreg == -1) xmmreg = _getFreeXMMreg();
g_xmmtypes[xmmreg] = XMMT_INT;
xmmregs[xmmreg].inuse = 1;
xmmregs[xmmreg].type = XMMTYPE_GPRREG;
xmmregs[xmmreg].reg = gprreg;
xmmregs[xmmreg].mode = mode;
xmmregs[xmmreg].needed = 1;
xmmregs[xmmreg].counter = g_xmmAllocCounter++;
if (mode & MODE_READ)
{
if (gprreg == 0 )
{
SSEX_PXOR_XMM_to_XMM(xmmreg, xmmreg);
}
else
{
// DOX86
int mmxreg;
if (mode & MODE_READ) _flushConstReg(gprreg);
mmxreg = _checkMMXreg(MMX_GPR+gprreg, 0);
if (mmxreg >= 0 )
{
// transfer
SetMMXstate();
SSE2_MOVQ2DQ_MM_to_XMM(xmmreg, mmxreg);
SSE2_PUNPCKLQDQ_XMM_to_XMM(xmmreg, xmmreg);
SSE2_PUNPCKHQDQ_M128_to_XMM(xmmreg, (u32)&cpuRegs.GPR.r[gprreg].UL[0]);
if (mmxregs[mmxreg].mode & MODE_WRITE )
{
// instead of setting to write, just flush to mem
if (!(mode & MODE_WRITE))
{
SetMMXstate();
MOVQRtoM((u32)&cpuRegs.GPR.r[gprreg].UL[0], mmxreg);
}
//xmmregs[xmmreg].mode |= MODE_WRITE;
}
// don't flush
mmxregs[mmxreg].inuse = 0;
}
else
SSEX_MOVDQA_M128_to_XMM(xmmreg, (uptr)&cpuRegs.GPR.r[gprreg].UL[0]);
}
}
else
_deleteMMXreg(MMX_GPR+gprreg, 0);
return xmmreg;
}