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July 27th, 2010, 01:12 AM
Join Date: Aug 2007
Originally Posted by
Some hwords have no opcode in Thumb.
If you try to decompile one of this hwords the output is [???].
Maybe it is a grafik or an ARM code.
That's what I thought at first too. But it all makes sense:
The function pushes registers in the first line
The function pops registers in the last line
The registers are popped to the positions they were pushed from except for lr/pc of course.
The stack-pointer is decreased and then used to the limit. (Why allocate more or less?)
The cmp-opcode is followed by a beq-opcode.
The functions called from this function are valid too.
It *has* to be THUMB-Code!
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