Igor’s Tip of the Week #137: processor modes and segment registers

Some of the processors supported by IDA support different ISA variants, in particular:

• ARM processor module supports the classic 32-bit ARM instructions (A32), 16-bit Thumb or mixed 16/32-bit Thumb32 (T32) , as well as 64-bit A64 instructions (A64)


• PPC processor module supports the standard 32-bit PowerPC instructions and mixed 16/32-bit Variable Length Environment (VLE)


• MIPS module supports the classic 32-bit instructions as well as the compressed variants MIPS16 and microMIPS

Because sometimes these instructions sets may be present in the …

16-bit 64-bit arm binary environment ida isa length malware analysis may mips processor processors segment standard support variable