On Sep 4, 2010, at 1:50 PM, Jerry Krinock wrote: > So did you ever find out the mapping between function parameters and > registers on the 64-bit Intel architecture, or did you just poke around > blindly in all the registers?
Read this: <http://www.x86-64.org/documentation/abi-0.99.pdf> Basically, on Intel 64, arguments are placed in registers instead of on the stack as they are in Intel 32, unless you pass a function a data structure that is larger than 256 bits or has unaligned fields. The order of the registers is on page 20 of that PDF. > Can anyone confirm that the *(int *)($esp+4), *(int *)($esp+8) incantations > given in Apple's TN2124 are only true on the 32-bit Intel architecture? Yes, $esp is an Intel 32 register that is not available on Intel 64. Nick Zitzmann <http://www.chronosnet.com/> _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
