On Thu, 2010-07-08 at 14:31 -0700, Khem Raj wrote: > On Thu, Jul 8, 2010 at 2:29 PM, Phil Blundell <[email protected]> wrote: > > On Thu, 2010-07-08 at 14:03 -0700, Khem Raj wrote: > >> If I am not wrong you can still do interworking and not have bx (using > >> mov pc,lr) > > > > That's not an interworking instruction in ARMv4T, and I don't think it > > is in ARMv5TE either. You might be thinking of pop {pc}, which is > > interworking in ARMv5TE, but even this is not interworking in v4t. > > tst lr, #1 > moveq pc, lr > bx lr > > Thats how its done on armv4 for EABI
Right, but the MOV in that case is not an interworking instruction; it's just a way to avoid executing BX when you don't actually need to switch mode, so that you can create a library which still works in an ARM-only environment. The final BX in that sequence is mandatory in order for it to actually function as an interworking return. p. _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
