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poweropcodes: Fix slq. 

Test bit 26 of rB instead of using >= 0x20 to determine which operation to perform.
The two operations need to be switched such that rA is cleared when bit 26 is set.
Don't forget to store the result in rA.
This commit is contained in:
joevt 2024-04-09 02:25:53 -07:00 committed by dingusdev
parent e8273ecc61
commit 2b8f510603
1 changed files with 4 additions and 3 deletions
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7
cpu/ppc/poweropcodes.cpp
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@ -479,16 +479,17 @@ void dppc_interpreter::power_slq() {
ppc_grab_regssab(ppc_cur_instruction);
unsigned rot_sh = ppc_result_b & 0x1F;
if (ppc_result_b >= 0x20) {
ppc_result_a = ppc_result_d << rot_sh;
} else {
if (ppc_result_b & 0x20) {
ppc_result_a = 0;
} else {
ppc_result_a = ppc_result_d << rot_sh;
}
if (rec)
ppc_changecrf0(ppc_result_a);
ppc_state.spr[SPR::MQ] = ((ppc_result_d << rot_sh) | (ppc_result_d >> (32 - rot_sh)));
ppc_store_iresult_reg(reg_a, ppc_result_a);
}
template void dppc_interpreter::power_slq<RC0>();