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CPU/PGXP: Don't force valid inputs on mult/div

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This commit is contained in:
Stenzek 2024-07-09 19:21:47 +10:00
parent d831cb69a9
commit 3b7844be5a
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1 changed files with 30 additions and 48 deletions
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78
src/core/cpu_pgxp.cpp
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@ -1217,13 +1217,6 @@ void CPU::PGXP::CPU_MULT(u32 instr, u32 rsVal, u32 rtVal)
Validate(&prsVal, rsVal);
Validate(&prtVal, rtVal);
// iCB: Only require one valid input
if (((prtVal.flags & VALID_XY) != VALID_XY) != ((prsVal.flags & VALID_XY) != VALID_XY))
{
MakeValid(&prsVal, rsVal);
MakeValid(&prtVal, rtVal);
}
PGXP_value& ploVal = g_state.pgxp_gpr[static_cast<u8>(Reg::lo)];
PGXP_value& phiVal = g_state.pgxp_gpr[static_cast<u8>(Reg::hi)];
ploVal = prsVal;
@ -1235,11 +1228,16 @@ void CPU::PGXP::CPU_MULT(u32 instr, u32 rsVal, u32 rtVal)
double xx, xy, yx, yy;
double lx = 0, ly = 0, hx = 0, hy = 0;
const float rsx = prsVal.GetValidX(rsVal);
const float rsy = prsVal.GetValidY(rsVal);
const float rtx = prtVal.GetValidX(rtVal);
const float rty = prtVal.GetValidY(rtVal);
// Multiply out components
xx = f16Unsign(prsVal.x) * f16Unsign(prtVal.x);
xy = f16Unsign(prsVal.x) * (prtVal.y);
yx = (prsVal.y) * f16Unsign(prtVal.x);
yy = (prsVal.y) * (prtVal.y);
xx = f16Unsign(rsx) * f16Unsign(rtx);
xy = f16Unsign(rsx) * (rty);
yx = (rsy)*f16Unsign(rtx);
yy = (rsy) * (rty);
// Split values into outputs
lx = xx;
@ -1254,10 +1252,10 @@ void CPU::PGXP::CPU_MULT(u32 instr, u32 rsVal, u32 rtVal)
ploVal.x = (float)f16Sign(lx);
ploVal.y = (float)f16Sign(ly);
ploVal.flags |= VALID_TAINTED_Z;
ploVal.flags |= VALID_TAINTED_Z | (prtVal.flags & VALID_XY);
phiVal.x = (float)f16Sign(hx);
phiVal.y = (float)f16Sign(hy);
phiVal.flags |= VALID_TAINTED_Z;
phiVal.flags |= VALID_TAINTED_Z | (prtVal.flags & VALID_XY);
// compute PSX value
const u64 result = static_cast<u64>(static_cast<s64>(SignExtend64(rsVal)) * static_cast<s64>(SignExtend64(rtVal)));
@ -1275,13 +1273,6 @@ void CPU::PGXP::CPU_MULTU(u32 instr, u32 rsVal, u32 rtVal)
Validate(&prsVal, rsVal);
Validate(&prtVal, rtVal);
// iCB: Only require one valid input
if (((prtVal.flags & VALID_XY) != VALID_XY) != ((prsVal.flags & VALID_XY) != VALID_XY))
{
MakeValid(&prsVal, rsVal);
MakeValid(&prtVal, rtVal);
}
PGXP_value& ploVal = g_state.pgxp_gpr[static_cast<u8>(Reg::lo)];
PGXP_value& phiVal = g_state.pgxp_gpr[static_cast<u8>(Reg::hi)];
ploVal = prsVal;
@ -1293,11 +1284,16 @@ void CPU::PGXP::CPU_MULTU(u32 instr, u32 rsVal, u32 rtVal)
double xx, xy, yx, yy;
double lx = 0, ly = 0, hx = 0, hy = 0;
const float rsx = prsVal.GetValidX(rsVal);
const float rsy = prsVal.GetValidY(rsVal);
const float rtx = prtVal.GetValidX(rtVal);
const float rty = prtVal.GetValidY(rtVal);
// Multiply out components
xx = f16Unsign(prsVal.x) * f16Unsign(prtVal.x);
xy = f16Unsign(prsVal.x) * f16Unsign(prtVal.y);
yx = f16Unsign(prsVal.y) * f16Unsign(prtVal.x);
yy = f16Unsign(prsVal.y) * f16Unsign(prtVal.y);
xx = f16Unsign(rsx) * f16Unsign(rtx);
xy = f16Unsign(rsx) * f16Unsign(rty);
yx = f16Unsign(rsy) * f16Unsign(rtx);
yy = f16Unsign(rsy) * f16Unsign(rty);
// Split values into outputs
lx = xx;
@ -1312,10 +1308,10 @@ void CPU::PGXP::CPU_MULTU(u32 instr, u32 rsVal, u32 rtVal)
ploVal.x = (float)f16Sign(lx);
ploVal.y = (float)f16Sign(ly);
ploVal.flags |= VALID_TAINTED_Z;
ploVal.flags |= VALID_TAINTED_Z | (prtVal.flags & VALID_XY);
phiVal.x = (float)f16Sign(hx);
phiVal.y = (float)f16Sign(hy);
phiVal.flags |= VALID_TAINTED_Z;
phiVal.flags |= VALID_TAINTED_Z | (prtVal.flags & VALID_XY);
// compute PSX value
const u64 result = ZeroExtend64(rsVal) * ZeroExtend64(rtVal);
@ -1334,13 +1330,6 @@ void CPU::PGXP::CPU_DIV(u32 instr, u32 rsVal, u32 rtVal)
Validate(&prsVal, rsVal);
Validate(&prtVal, rtVal);
//// iCB: Only require one valid input
if (((prtVal.flags & VALID_XY) != VALID_XY) != ((prsVal.flags & VALID_XY) != VALID_XY))
{
MakeValid(&prsVal, rsVal);
MakeValid(&prtVal, rtVal);
}
PGXP_value& ploVal = g_state.pgxp_gpr[static_cast<u8>(Reg::lo)];
PGXP_value& phiVal = g_state.pgxp_gpr[static_cast<u8>(Reg::hi)];
ploVal = prsVal;
@ -1349,18 +1338,18 @@ void CPU::PGXP::CPU_DIV(u32 instr, u32 rsVal, u32 rtVal)
// Z/valid is the same
phiVal = ploVal;
double vs = f16Unsign(prsVal.x) + (prsVal.y) * (double)(1 << 16);
double vt = f16Unsign(prtVal.x) + (prtVal.y) * (double)(1 << 16);
double vs = f16Unsign(prsVal.GetValidX(rsVal)) + prsVal.GetValidY(rsVal) * (double)(1 << 16);
double vt = f16Unsign(prtVal.GetValidX(rtVal)) + prtVal.GetValidY(rtVal) * (double)(1 << 16);
double lo = vs / vt;
ploVal.y = (float)f16Sign(f16Overflow(lo));
ploVal.x = (float)f16Sign(lo);
ploVal.flags |= VALID_TAINTED_Z;
ploVal.flags |= VALID_TAINTED_Z | (prtVal.flags & VALID_XY);
double hi = fmod(vs, vt);
phiVal.y = (float)f16Sign(f16Overflow(hi));
phiVal.x = (float)f16Sign(hi);
phiVal.flags |= VALID_TAINTED_Z;
phiVal.flags |= VALID_TAINTED_Z | (prtVal.flags & VALID_XY);
// compute PSX value
if (static_cast<s32>(rtVal) == 0)
@ -1393,13 +1382,6 @@ void CPU::PGXP::CPU_DIVU(u32 instr, u32 rsVal, u32 rtVal)
Validate(&prsVal, rsVal);
Validate(&prtVal, rtVal);
//// iCB: Only require one valid input
if (((prtVal.flags & VALID_XY) != VALID_XY) != ((prsVal.flags & VALID_XY) != VALID_XY))
{
MakeValid(&prsVal, rsVal);
MakeValid(&prtVal, rtVal);
}
PGXP_value& ploVal = g_state.pgxp_gpr[static_cast<u8>(Reg::lo)];
PGXP_value& phiVal = g_state.pgxp_gpr[static_cast<u8>(Reg::hi)];
ploVal = prsVal;
@ -1408,18 +1390,18 @@ void CPU::PGXP::CPU_DIVU(u32 instr, u32 rsVal, u32 rtVal)
// Z/valid is the same
phiVal = ploVal;
double vs = f16Unsign(prsVal.x) + f16Unsign(prsVal.y) * (double)(1 << 16);
double vt = f16Unsign(prtVal.x) + f16Unsign(prtVal.y) * (double)(1 << 16);
double vs = f16Unsign(prsVal.GetValidX(rsVal)) + f16Unsign(prsVal.GetValidY(rsVal)) * (double)(1 << 16);
double vt = f16Unsign(prtVal.GetValidX(rtVal)) + f16Unsign(prtVal.GetValidY(rtVal)) * (double)(1 << 16);
double lo = vs / vt;
ploVal.y = (float)f16Sign(f16Overflow(lo));
ploVal.x = (float)f16Sign(lo);
ploVal.flags |= VALID_TAINTED_Z;
ploVal.flags |= VALID_TAINTED_Z | (prtVal.flags & VALID_XY);
double hi = fmod(vs, vt);
phiVal.y = (float)f16Sign(f16Overflow(hi));
phiVal.x = (float)f16Sign(hi);
phiVal.flags |= VALID_TAINTED_Z;
phiVal.flags |= VALID_TAINTED_Z | (prtVal.flags & VALID_XY);
if (rtVal == 0)
{