ppc_iop_aux.py

# PPC440x AUX instructions to dcread instructions
from idaapi import *
from idautils import *


def main():
    # Loop through all the segments and scan any marked as code.
    seg = ida_segment.get_first_seg()
    while seg is not None:
        print("Scanning %s" % ida_segment.get_segm_name(seg))
        
        # Search the segment for AUX instructions
        for i in range(seg.startEA, seg.endEA, 4):
            val = ida_bytes.get_dword(i)
            if ((val & 0xFF000000) == 0) and ((val & 0x00FFFFFF) != 0):
                ida_bytes.patch_dword(i, ((x & 0x03fffc00) | 0x7c0003cc))

        # Next segment.
        seg = ida_segment.get_next_seg(seg.startEA)

main()