assembly - arm thumb mode 4byte instructions -

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thumb mode instructions 2 bytes , arm mode instructions 4 bytes. screenshot disassembly of thumb mode instructions. why see 4 byte instructions mixed 2byte instructions?? can explain this?

thank in advance.

enter image description here

cortex m micros can run in thumb-2 mode, in between thumb , arm modes. thumbs-2 instruction set includes 16 , 32 bit instructions , processor don't need switch modes execute both tipes of instructions.


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