Hi! On Thu, May 16, 2024 at 10:06:58PM +1000, Michael Ellerman wrote: > Andy Polyakov <appro@xxxxxxxxxxxxxx> writes: > >>> +.abiversion 2 > >> > >> I'd prefer that was left to the compiler flags. > > > > Problem is that it's the compiler that is responsible for providing this > > directive in the intermediate .s prior invoking the assembler. And there > > is no assembler flag to pass through -Wa. > > Hmm, right. But none of our existing .S files include .abiversion > directives. > > We build .S files with gcc, passing -mabi=elfv2, but it seems to have no > effect. Yup. You coulds include some header file, maybe? Since you run the assembler code through the C preprocessor anyway, for some weird reason :-) > But the actual code follows ELFv2, because we wrote it that way, and I > guess the linker doesn't look at the actual ABI version of the .o ? It isn't a version. It is an actual different ABI. GNU LD allows linking together whatever, yes. > Is .abiversion documented anywhere? I can't see it in the manual. Yeah me neither. https://sourceware.org/bugzilla/enter_bug.cgi ? A commandline flag (to GAS) would seem best? Segher
