I have managed to get native debugging working for 32 bit ( I did have to rename the ios_native folder in the magic particles marmalade API package to iphone ), however there doesn't appear to be any libs for 64bit iOS native debugging. There also isn't any x86 native libs to allow me to debug in the iOS simulator in xcode.
From http://docs.madewithmarmalade.com/display/MD/Debugging+iOS+builds#DebuggingiOSbuilds-Prerequisites, here is the are the required libs paths to fully support native debug :
For C++ modules:
<module folder>/lib/arm/iphone/lib<name>.a ARM (device)
<module folder>/lib/arm/iphone/lib<name>_d.a ARM (device) debug
<module folder>/lib/aarch64/iphone/lib<name>.a AArch64 (device)
<module folder>/lib/aarch64/iphone/lib<name>_d.a AArch64 (device) debug
<module folder>/lib/x86/iphone/lib<name>.a x86 (simulator)
<module folder>/lib/x86/iphone/lib<name>_d.a x86 (simulator) debug
thanks again
Andy