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fsqrtx/fsqrtsx

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This commit is contained in:
Ben Vanik 2013-10-19 20:25:03 -07:00
parent e842a6614a
commit 4e6799197f
1 changed files with 49 additions and 4 deletions
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53
src/xenia/cpu/x64/x64_emit_fpu.cc
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@ -295,13 +295,58 @@ XEEMITTER(fselx, 0xFC00002E, A )(X64Emitter& e, X86Compiler& c, InstrDat
}
XEEMITTER(fsqrtx, 0xFC00002C, A )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// Double precision:
// frD <- sqrt(frB)
XmmVar v(c.newXmmVar());
c.movq(v, e.fpr_value(i.A.FRA));
c.sqrtsd(v, v);
e.update_fpr_value(i.A.FRT, v);
// TODO(benvanik): update status/control register.
if (i.A.Rc) {
// With cr0 update.
XEASSERTALWAYS();
//e.update_cr_with_cond(0, v);
XEINSTRNOTIMPLEMENTED();
return 1;
}
e.TraceFPR(i.A.FRT, i.A.FRB);
return 0;
}
XEEMITTER(fsqrtsx, 0xEC00002C, A )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// Single precision:
// frD <- sqrt(frB)
XmmVar v(c.newXmmVar());
c.movq(v, e.fpr_value(i.A.FRA));
c.sqrtsd(v, v);
#if defined(ROUND_TO_SINGLE)
// TODO(benvanik): check rounding mode? etc?
// This converts to a single then back to a double to approximate the
// rounding on the 360.
c.cvtsd2ss(v, v);
c.cvtss2sd(v, v);
#endif // ROUND_TO_SINGLE
e.update_fpr_value(i.A.FRT, v);
// TODO(benvanik): update status/control register.
if (i.A.Rc) {
// With cr0 update.
XEASSERTALWAYS();
//e.update_cr_with_cond(0, v);
XEINSTRNOTIMPLEMENTED();
return 1;
}
e.TraceFPR(i.A.FRT, i.A.FRB);
return 0;
}