"Marco Bodrato" <bodr...@mail.dm.unipi.it> writes: One question about PIC/PLT and the gcd_22 to gcd_11 tail-call.
3 questions, actually... Is it safe to tail-call (jump to, in asm) another function that may not have the same return type? A private call can have any private ABI. I mean, is it possible, for a program dynamically-linked to the library, to force the usage of another gcd_11 function returning its result in %rax as expected but not taking care of %rdx? I mean: such a gcd_11 function would be completely valid... Dynamically or statically linked, yes, gcc_11 can be overriden. Can the tail-call be forced as internal to the library? Or maybe it is so, by default... The "hidden" attribute could take care of a dynamic library. For static, I am not aware of anything which could help. I'd say this is a very generic problem. Our fine library will mishave too if somebody overrode mpn_mul_basecase with something incompatible. :-) (I'm not 100% happy with our private ABI between _22 and _11, but for now it will serve its purpose well enough, I think.) -- Torbjörn Please encrypt, key id 0xC8601622 _______________________________________________ gmp-devel mailing list gmp-devel@gmplib.org https://gmplib.org/mailman/listinfo/gmp-devel
