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Adding frsqrte and fixing fsqrt o_o

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This commit is contained in:
Ben Vanik
2015-05-16 13:22:49 -07:00
parent 6239ff9616
commit 504b855c20
9 changed files with 81 additions and 4 deletions
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17
src/xenia/cpu/frontend/ppc_emit_fpu.cc
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@@ -130,8 +130,17 @@ XEEMITTER(fresx, 0xEC000030, A)(PPCHIRBuilder& f, InstrData& i) {
}
XEEMITTER(frsqrtex, 0xFC000034, A)(PPCHIRBuilder& f, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// Double precision:
// frD <- 1/sqrt(frB)
Value* v = f.RSqrt(f.LoadFPR(i.A.FRB));
f.StoreFPR(i.A.FRT, v);
// f.UpdateFPRF(v);
if (i.A.Rc) {
// e.update_cr_with_cond(1, v);
XEINSTRNOTIMPLEMENTED();
return 1;
}
return 0;
}
XEEMITTER(fsubx, 0xFC000028, A)(PPCHIRBuilder& f, InstrData& i) {
@@ -179,7 +188,7 @@ XEEMITTER(fselx, 0xFC00002E, A)(PPCHIRBuilder& f, InstrData& i) {
XEEMITTER(fsqrtx, 0xFC00002C, A)(PPCHIRBuilder& f, InstrData& i) {
// Double precision:
// frD <- sqrt(frB)
Value* v = f.Sqrt(f.LoadFPR(i.A.FRA));
Value* v = f.Sqrt(f.LoadFPR(i.A.FRB));
f.StoreFPR(i.A.FRT, v);
// f.UpdateFPRF(v);
if (i.A.Rc) {
@@ -193,7 +202,7 @@ XEEMITTER(fsqrtx, 0xFC00002C, A)(PPCHIRBuilder& f, InstrData& i) {
XEEMITTER(fsqrtsx, 0xEC00002C, A)(PPCHIRBuilder& f, InstrData& i) {
// Single precision:
// frD <- sqrt(frB)
Value* v = f.Sqrt(f.LoadFPR(i.A.FRA));
Value* v = f.Sqrt(f.LoadFPR(i.A.FRB));
v = f.Convert(f.Convert(v, FLOAT32_TYPE), FLOAT64_TYPE);
f.StoreFPR(i.A.FRT, v);
// f.UpdateFPRF(v);