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Fixing lvrx.

This commit is contained in:
Ben Vanik 2013-10-12 15:06:16 -07:00
parent d46069cd47
commit 83d7523da1
1 changed files with 128 additions and 126 deletions
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6
src/xenia/cpu/x64/x64_emit_altivec.cc
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@ -346,23 +346,25 @@ int InstrEmit_lvrx_(X64Emitter& e, X86Compiler& c, InstrData& i, uint32_t vd, ui
GpVar sh(c.newGpVar());
c.mov(sh, ea);
c.and_(sh, imm(0xF));
XmmVar v = e.ReadMemoryXmm(i.address, ea, 4);
// If fully aligned skip complex work.
XmmVar v(c.newXmmVar());
c.pxor(v, v);
Label done(c.newLabel());
c.test(sh, sh);
c.jz(done);
{
// Shift left by the number of bytes offset and fill with zeros.
// We reuse the lvsl table here, as it does that for us.
c.movaps(v, e.ReadMemoryXmm(i.address, ea, 4));
GpVar gt(c.newGpVar());
c.xor_(gt, gt);
c.pinsrb(v, gt.r8(), imm(0));
c.shl(sh, imm(4)); // table offset = (16b * sh)
c.mov(gt, imm((sysint_t)__shift_table_right));
c.pshufb(v, xmmword_ptr(gt, sh));
c.shufps(v, v, imm(0x1B));
}
c.bind(done);
c.shufps(v, v, imm(0x1B));
e.update_vr_value(vd, v);
e.TraceVR(vd);
return 0;