Avoiding the BLX (immediate) instruction issue on an ARM1176JZ-S or ARM1176JZF-S processor
The ARM Linker can work around the possible issue on an ARM1176JZ-S or ARM1176JZF-S processor, where a
BLX (immediate) instruction might corrupt the instruction stream.
If your software is likely to run on an ARM1176JZ-S or ARM1176JZF-S processor, see the ARM1176JZ-S™ and ARM1176JZF-S™ Programmers Advice Notice Use of BLX (immediate) for more details.
If you decide to apply the workaround, you must use the linker option