Re: [Qemu-devel] [PATCH 5/5] target-m68k: increment/decrement with SP

[Thomas Huth]

On 12.01.2017 21:18, Laurent Vivier wrote:
> Address Register indirect With postincrement:
> 
> When using the stack pointer (A7) with byte size data, the register
> is incremented by two.
> 
> Address Register indirect With predecrement:
> 
> When using the stack pointer (A7) with byte size data, the register
> is decremented by two.

I think this is only valid for the full 680x0 CPUs. According to
http://www.nxp.com/assets/documents/data/en/reference-manuals/CFPRM.pdf
the stack pointer behaves differently on ColdFire:

"2.2.5 Address Register Indirect with Predecrement Mode [...]
Note that the stack pointer (A7) is treated just like the other address
registers."

 Thomas