ARM Scatter-loading heap/stack setup

Whilst working on my Embedded Systems Advanced OS coursework I ran into an issue whilst trying to define the location/size of my C heap and stack using the scatter-loading description file.

I kept getting the error
Execution region ARM_LIB_HEAP spans beyond 32 bit address space (base 0xc8804060, size 3380625504 bytes)

Turns out that I’d misunderstood how the EMPTY operator worked. I had:
ARM_LIB_HEAP 0xC8804060 EMPTY 0xC9804060
{
}

When in fact the EMPTY operator takes a size not an end location! Eventually I realised this and corrected it to

ARM_LIB_HEAP 0xC8804060 EMPTY 0x1000000
{
}

giving me my desired 16MB heap.