ref: 9f8594e14791b57e662abe1e76324bd2366c753c dir: /as/target/x86/rules.dat/
^imm8 AIMM8 ^imm16 AIMM16 ^imm32 AIMM32 ^imm64 AIMM64 ^\(n\) ADIRECT ^sym ASYM ^string ASTR