ref: aa911418f7dfb7fa7f5026d8cd3f52b03e86fc7e dir: /as/target/x86/rules.dat/
^reg8 AREG8 ^reg16 AREG16 ^imm8 AIMM8 ^imm16 AIMM16 ^imm32 AIMM32 ^imm64 AIMM64 ^\(n\) ADIRECT ^sym ASYM ^string ASTR