stq abcdef0123456789,1133557722446688,   0 => 1133557722446688,abcdef0123456789)

lq (0xaaccee0011335577, 0xabcdef0123456789) =>  (reg_pair = 0xabcdef0123456789, 0xaaccee0011335577)

lbarx (0xaaccee0011335577, 0xabcdef0123456789) =>  (reg_pair = 0x0000000000000077, 0x0000000000000000)

lharx (0xaaccee0011335577, 0xabcdef0123456789) =>  (reg_pair = 0x0000000000005577, 0x0000000000000000)

lqarx (0xaaccee0011335577, 0xabcdef0123456789) =>  (reg_pair = 0xabcdef0123456789, 0xaaccee0011335577)

stbcx. abefcd0145236789,1155337744226688 => 0000000000000089,0000000000000001; CR=20000000

sthcx. abefcd0145236789,1155337744226688 => 0000000000006789,0000000000000001; CR=20000000

stqcx. abefcd0145236789,1155337744226688 => 1155337744226688,abefcd0145236789; CR=20000000

All done. Tested 8 different instructions