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fcfid(z), fctid(z) -- both largely untested.

This commit is contained in:
Ben Vanik 2013-05-27 05:22:38 -07:00
parent 84fb802166
commit 778efdb276
1 changed files with 118 additions and 10 deletions
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128
src/xenia/cpu/x64/x64_emit_fpu.cc
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@ -18,6 +18,11 @@ using namespace xe::cpu::ppc;
using namespace AsmJit;
// Good source of information:
// http://mamedev.org/source/src/emu/cpu/powerpc/ppc_ops.c
// The correctness of that code is not reflected here yet -_-
// Enable rounding numbers to single precision as required.
// This adds a bunch of work per operation and I'm not sure it's required.
#define ROUND_TO_SINGLE
@ -377,28 +382,131 @@ XEEMITTER(fnmsubsx, 0xEC00003C, A )(X64Emitter& e, X86Compiler& c, InstrDat
// Floating-point rounding and conversion (A-10)
XEEMITTER(fcfidx, 0xFC00069C, X )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// frD <- signed_int64_to_double( frB )
XmmVar v(c.newXmmVar());
c.movq(v, e.fpr_value(i.A.FRB));
c.save(v);
c.cvtsi2sd(v, v.m64());
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;
}
return 0;
}
XEEMITTER(fctidx, 0xFC00065C, X )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// frD <- double_to_signed_int64( frB )
Label over_max(c.newLabel());
Label under_min(c.newLabel());
Label done(c.newLabel());
GpVar tmp(c.newGpVar());
XmmVar xmm_tmp(c.newXmmVar());
XmmVar v(c.newXmmVar());
c.movq(v, e.fpr_value(i.X.RB));
// Max value: 2^63 - 1
c.mov(tmp, imm(0x43e0000000000000));
c.movq(xmm_tmp, tmp);
c.cmpsd(v, xmm_tmp, 0);
c.jg(over_max);
// Min value: -2^63
c.mov(tmp, imm(0xc3e0000000000000));
c.movq(xmm_tmp, tmp);
c.cmpsd(v, xmm_tmp, 0);
c.jl(under_min);
c.save(v);
c.cvtsd2si(tmp, v.m64());
c.movq(v, tmp);
c.jmp(done);
c.bind(over_max);
c.mov(tmp, imm(0x7FFFFFFFFFFFFFFF));
c.movq(v, tmp);
c.jmp(done);
c.bind(under_min);
c.mov(tmp, imm(0x8000000000000000));
c.movq(v, tmp);
c.bind(done);
e.update_fpr_value(i.X.RT, 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;
}
return 0;
}
XEEMITTER(fctidzx, 0xFC00065E, X )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// TODO(benvanik): assuming round to zero is always set, is that ok?
return InstrEmit_fctidx(e, c, i);
}
XEEMITTER(fctiwx, 0xFC00001C, X )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// frD <- double_to_signed_int32( frB )
Label over_max(c.newLabel());
Label under_min(c.newLabel());
Label done(c.newLabel());
GpVar tmp(c.newGpVar());
XmmVar xmm_tmp(c.newXmmVar());
XmmVar v(c.newXmmVar());
c.movq(v, e.fpr_value(i.X.RB));
// Max value: 2^31 - 1
c.mov(tmp, imm(0x41efffffffe00000));
c.movq(xmm_tmp, tmp);
c.cmpsd(v, xmm_tmp, 0);
c.jg(over_max);
// Min value: -2^31
c.mov(tmp, imm(0xc1e0000000000000));
c.movq(xmm_tmp, tmp);
c.cmpsd(v, xmm_tmp, 0);
c.jl(under_min);
c.save(v);
c.cvtsd2si(tmp, v.m64());
c.movq(v, tmp);
c.jmp(done);
c.bind(over_max);
c.mov(tmp, imm(0x7FFFFFFF));
c.movq(v, tmp);
c.jmp(done);
c.bind(under_min);
c.mov(tmp, imm(0x80000000));
c.movq(v, tmp);
c.bind(done);
e.update_fpr_value(i.X.RT, 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;
}
return 0;
}
XEEMITTER(fctiwzx, 0xFC00001E, X )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// TODO(benvanik): assuming round to zero is always set, is that ok?
return InstrEmit_fctiwx(e, c, i);
}
XEEMITTER(frspx, 0xFC000018, X )(X64Emitter& e, X86Compiler& c, InstrData& i) {