libretro/ppsspp
1
0
Fork 0
mirror of https://github.com/libretro/ppsspp.git synced 2024-11-24 08:39:51 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

jit-ir: Comment most of the vfpu ops.

Browse Source
This commit is contained in:
Unknown W. Brackets 2016-05-14 17:35:04 -07:00
parent e1dbcd724e
commit 8a3dce3b8b
1 changed files with 64 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
Core/MIPS/IR/IRCompVFPU.cpp
View File

@ -380,7 +380,7 @@ namespace MIPSComp {
DISABLE;
}
// Matrix init
// Matrix init (no prefixes)
// d[N,M] = CONST[N,M]
// Not really about trying here, it will work if enabled.
@ -922,7 +922,7 @@ namespace MIPSComp {
void IRFrontend::Comp_Vmfvc(MIPSOpcode op) {
CONDITIONAL_DISABLE;
// Vector Move from vector control reg
// Vector Move from vector control reg (no prefixes)
// S[0] = VFPU_CTRL[i]
int vs = _VS;
@ -942,7 +942,7 @@ namespace MIPSComp {
void IRFrontend::Comp_Vmtvc(MIPSOpcode op) {
CONDITIONAL_DISABLE;
// Vector Move to vector control reg
// Vector Move to vector control reg (no prefixes)
// VFPU_CTRL[i] = S[0]
int vs = _VS;
@ -962,7 +962,7 @@ namespace MIPSComp {
void IRFrontend::Comp_Vmmov(MIPSOpcode op) {
CONDITIONAL_DISABLE;
// Matrix move
// Matrix move (no prefixes)
// D[N,M] = S[N,M]
int vs = _VS;
@ -1021,11 +1021,8 @@ namespace MIPSComp {
void IRFrontend::Comp_Vmscl(MIPSOpcode op) {
CONDITIONAL_DISABLE;
if (js.HasUnknownPrefix()) {
DISABLE;
}
// Matrix scale, matrix by scalar
// Matrix scale, matrix by scalar (no prefixes)
// d[N,M] = s[N,M] * t[0]
int vs = _VS;
@ -1135,9 +1132,9 @@ namespace MIPSComp {
// Many more instructions to interpret.
void IRFrontend::Comp_Vmmul(MIPSOpcode op) {
CONDITIONAL_DISABLE;
if (js.HasUnknownPrefix()) {
DISABLE;
}
// Matrix multiply (no prefixes)
// D[0 .. N,0 .. M] = S[0 .. N, 0 .. M] * T[0 .. N,0 .. M]
MatrixSize sz = GetMtxSize(op);
int n = GetMatrixSide(sz);
@ -1218,11 +1215,8 @@ namespace MIPSComp {
void IRFrontend::Comp_Vtfm(MIPSOpcode op) {
CONDITIONAL_DISABLE;
if (js.HasUnknownPrefix()) {
DISABLE;
}
// Vertex transform, vector by matrix
// Vertex transform, vector by matrix (no prefixes)
// d[N] = s[N*m .. N*m + n-1] dot t[0 .. n-1]
// Homogenous means t[n-1] is treated as 1.
@ -1322,10 +1316,29 @@ namespace MIPSComp {
}
void IRFrontend::Comp_VCrs(MIPSOpcode op) {
CONDITIONAL_DISABLE;
if (js.HasUnknownPrefix()) {
DISABLE;
}
// Vector cross (half a cross product, n = 3)
// d[0] = s[y]*t[z], d[1] = s[z]*t[x], d[2] = s[x]*t[y]
// To do a full cross product: vcrs tmp1, s, t; vcrs tmp2 t, s; vsub d, tmp1, tmp2;
// (or just use vcrsp.)
DISABLE;
}
void IRFrontend::Comp_VDet(MIPSOpcode op) {
CONDITIONAL_DISABLE;
if (js.HasUnknownPrefix()) {
DISABLE;
}
// Vector determinant
// d[0] = s[0]*t[1] - s[1]*t[0]
// Note: this operates on two vectors, not a 2x2 matrix.
DISABLE;
}
@ -1339,10 +1352,16 @@ namespace MIPSComp {
void IRFrontend::Comp_VCrossQuat(MIPSOpcode op) {
CONDITIONAL_DISABLE;
// TODO: Does this instruction even look at prefixes at all?
if (js.HasUnknownPrefix())
DISABLE;
// Vector cross product (n = 3)
// d[0 .. 2] = s[0 .. 2] X t[0 .. 2]
// Vector quaternion product (n = 4)
// d[0 .. 2] = t[0 .. 2] X s[0 .. 2] + s[3] * t[0 .. 2] + t[3] * s[0 .. 2]
// d[3] = s[3]*t[3] - s[0 .. 2] dot t[0 .. 3]
VectorSize sz = GetVecSize(op);
int n = GetNumVectorElements(sz);
@ -1393,6 +1412,9 @@ namespace MIPSComp {
if (js.HasUnknownPrefix())
DISABLE;
// Vector compare
// VFPU_CC[N] = COMPARE(s[N], t[N])
VectorSize sz = GetVecSize(op);
int n = GetNumVectorElements(sz);
@ -1415,7 +1437,9 @@ namespace MIPSComp {
DISABLE;
}
// logBlocks = 1;
// Vector conditional move
// imm3 >= 6: d[N] = VFPU_CC[N] == tf ? s[N] : d[N]
// imm3 < 6: d[N] = VFPU_CC[imm3] == tf ? s[N] : d[N]
VectorSize sz = GetVecSize(op);
int n = GetNumVectorElements(sz);
@ -1451,6 +1475,9 @@ namespace MIPSComp {
if (js.HasUnknownPrefix())
DISABLE;
// Vector integer immediate
// d[0] = float(imm)
s32 imm = (s32)(s16)(u16)(op & 0xFFFF);
u8 dreg;
GetVectorRegsPrefixD(&dreg, V_Single, _VT);
@ -1463,6 +1490,9 @@ namespace MIPSComp {
if (js.HasUnknownPrefix())
DISABLE;
// Vector half-float immediate
// d[0] = float(imm)
FP16 half;
half.u = op & 0xFFFF;
FP32 fval = half_to_float_fast5(half);
@ -1475,10 +1505,12 @@ namespace MIPSComp {
void IRFrontend::Comp_Vcst(MIPSOpcode op) {
CONDITIONAL_DISABLE;
if (js.HasUnknownPrefix())
DISABLE;
// Vector constant
// d[N] = CONST
int conNum = (op >> 16) & 0x1f;
int vd = _VD;
@ -1500,6 +1532,14 @@ namespace MIPSComp {
}
void IRFrontend::Comp_Vsgn(MIPSOpcode op) {
CONDITIONAL_DISABLE;
if (js.HasUnknownPrefix()) {
DISABLE;
}
// Vector extract sign
// d[N] = signum(s[N])
DISABLE;
}
@ -1541,6 +1581,12 @@ namespace MIPSComp {
}
void IRFrontend::Comp_ColorConv(MIPSOpcode op) {
CONDITIONAL_DISABLE;
// TODO: Verify if this ignores prefixes?
// Vector color conversion
// d[N] = ConvertTo16(s[N*2]) | (ConvertTo16(s[N*2+1]) << 16)
DISABLE;
}