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mulhwx/mulhwux

This commit is contained in:
Ben Vanik 2013-10-14 17:49:21 -07:00
parent 1e66e39efc
commit 5bed1069f8
1 changed files with 52 additions and 4 deletions
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48
src/xenia/cpu/x64/x64_emit_alu.cc
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@ -398,15 +398,63 @@ XEEMITTER(mulhdux, 0x7C000012, XO )(X64Emitter& e, X86Compiler& c, InstrDat
}
XEEMITTER(mulhwx, 0x7C000096, XO )(X64Emitter& e, X86Compiler& c, InstrData& i) {
// RT[32:64] <- ((RA)[32:63] × (RB)[32:63])[0:31]
if (i.XO.OE) {
// With XER update.
XEINSTRNOTIMPLEMENTED();
return 1;
}
GpVar v_0(c.newGpVar());
GpVar v_1(c.newGpVar());
GpVar hi(c.newGpVar());
c.alloc(v_0, rax);
c.alloc(hi, rdx);
c.mov(v_0.r32(), e.gpr_value(i.XO.RA).r32());
c.mov(v_1.r32(), e.gpr_value(i.XO.RB).r32());
c.imul(hi.r32(), v_0.r32(), v_1.r32());
e.update_gpr_value(i.XO.RT, hi);
if (i.XO.Rc) {
// With cr0 update.
e.update_cr_with_cond(0, hi);
}
e.clear_constant_gpr_value(i.XO.RT);
return 0;
}
XEEMITTER(mulhwux, 0x7C000016, XO )(X64Emitter& e, X86Compiler& c, InstrData& i) {
// RT[32:64] <- ((RA)[32:63] × (RB)[32:63])[0:31]
if (i.XO.OE) {
// With XER update.
XEINSTRNOTIMPLEMENTED();
return 1;
}
GpVar v_0(c.newGpVar());
GpVar v_1(c.newGpVar());
GpVar hi(c.newGpVar());
c.alloc(v_0, rax);
c.alloc(hi, rdx);
c.mov(v_0.r32(), e.gpr_value(i.XO.RA).r32());
c.mov(v_1.r32(), e.gpr_value(i.XO.RB).r32());
c.mul(hi.r32(), v_0.r32(), v_1.r32());
e.update_gpr_value(i.XO.RT, hi);
if (i.XO.Rc) {
// With cr0 update.
e.update_cr_with_cond(0, hi);
}
e.clear_constant_gpr_value(i.XO.RT);
return 0;
}
XEEMITTER(mulldx, 0x7C0001D2, XO )(X64Emitter& e, X86Compiler& c, InstrData& i) {
// RT <- ((RA) × (RB))[64:127]