ARM Cortex A9 - Memory Model

Programmers Model
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3.8 Memory model
The Cortex-A9 processor views memory as a linear collection of bytes numbered in ascending
order from zero. For example, bytes 0-3 hold the first stored word, and bytes 4-7 hold the second
stored word. The processor can store words in memory in either big-endian format or
little-endian format.
Instructions are always treated as little-endian.
Note
ARMv7 does not support the BE-32 memory model.