ref: 2605b26a91d34983201cf0e7c643e28eda4cb159 dir: /as/target/x86/rules.dat/
^imm8 AIMM8 ^imm16 AIMM16 ^imm32 AIMM32 ^imm64 AIMM64 ^\(n\) ADIRECT ^sym ASYM ^string ASTR