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rlwnmx

This commit is contained in:
Ben Vanik 2013-10-19 19:07:26 -07:00
parent 807b949fea
commit 10c69cfaf2
1 changed files with 24 additions and 2 deletions
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26
src/xenia/cpu/x64/x64_emit_alu.cc
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@ -1479,8 +1479,30 @@ XEEMITTER(rlwinmx, 0x54000000, M )(X64Emitter& e, X86Compiler& c, InstrDat
}
XEEMITTER(rlwnmx, 0x5C000000, M )(X64Emitter& e, X86Compiler& c, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
return 1;
// n <- (RB)[59:63]
// r <- ROTL32((RS)[32:63], n)
// m <- MASK(MB+32, ME+32)
// RA <- r & m
GpVar v(c.newGpVar());
c.mov(v.r32(), e.gpr_value(i.M.RT).r32()); // truncate
GpVar sh(c.newGpVar());
c.mov(sh, e.gpr_value(i.M.SH));
c.and_(sh, imm(0x1F));
c.rol(v.r32(), sh);
c.and_(v, imm(XEMASK(i.M.MB + 32, i.M.ME + 32)));
e.update_gpr_value(i.M.RA, v);
if (i.M.Rc) {
// With cr0 update.
e.update_cr_with_cond(0, v);
}
e.clear_constant_gpr_value(i.M.RA);
return 0;
}