iOS iOS executable file format and headers

[sms2000]

Where can I find technical info regarding iOS 4.0 executable file format?
Headers, code segments, relocations, imports/exports etc.

Like PE format in Windows known now to everyone...

Thanks.

 

[robbieduncan]

Pretty sure it's a multi-architecture Mach-O format (with code signing).

Edit: Apple provide some technical documentation

 

[sms2000]

2robbieduncan

Many thanks.