exarmo-cli

The exarmo command, a disassembler for AArch64, A32 and T32. It is built on exarmo-aarch64 and exarmo-aarch32.

cargo install exarmo-cli

exarmo decode a64 d503201f      # nop
exarmo decode a32 e0812003      # add r2, r1, r3
exarmo decode t32 bf000000      # nop

Each instruction is given in hexadecimal as its 32-bit word. A T32 instruction's first halfword goes in the high half, so a 16-bit instruction is still written as eight digits, bf000000, with its low half ignored. An argument of - reads one per line from standard input.

--byteswap reads the digits as the bytes sit in memory, as a hex dump shows them. --debug prints the instruction's encoding and fields beside its text. --intrinsics prints the first ACLE intrinsic an AArch64 instruction implements. A word that is CONSTRAINED UNPREDICTABLE has (unpredictable) after its text. A word that decodes to no instruction prints why in place of its text, such as error: Unallocated.

The aarch64 and aarch32 features choose which instruction sets are built. Both are on by default.