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 Forums >>  IDA Pro  >>  programatically accessing the T segment register for arm binaries

Topic created on: March 25, 2010 11:18 CDT by bveina .

I'm working on a IDApython script to do some things with arm binaries but i need to be able to set the T flag to switch between arm and thumb mode. looking at the hpps and found some useful apis but i would expect the following snippet to show me the T flag for that address. but i get BADADDR for all of them

for i in range(0,16):
  print i,"Reg:",hex(getSR(0x27f0,i))

what am i missing here?

  bveina   March 28, 2010 23:35.40 CDT
upon further inspection i was not looking at a large enough range of values. while 16 is defined as a maximum number of segment registers ph defines a base register number. the only values of i the give results for a macho arm binary seem to be
20,21, and 22
20 appears to be the T flag

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