On Mon, 8 Jan 2024 18:17:17 -0800, Alan Coopersmith wrote: > On 1/8/24 17:55, Goetz T. Fischer wrote: >> hi again, >> >> i tried to run something compiled with sunpro on solaris 11 on indiana and >> it almost worked. i put the >> additional libs in place and everything looked fine. however, running the >> program in question failed >> with: >> >> ld.so.1: prog: fatal: prog: hardware capability (CA_SUNW_HW_2) unsupported: >> 0x80 [ RDSEED ] >> >> of course the first impression is that the cpu simply doesn't support RDSEED >> but that's not the case. >> it >> does support it and the program in question runs fine on the same machine >> under solaris 11. >> so it seems like something sunpro produces gets misinterpreted. >> >> maybe someone else ran into the same problem and found a solution? > > Unfortunately, illumos & Solaris diverged on the id's used for hardware > capabilities added after the fork. > > On illumos, AV_386_2_RDSEED is 0x00000080 and AV_386_2_BMI2 is 0x00000008, > but on Solaris, AV2_386_BMI2 is 0x00000080 and AV2_386_RDSEED is 0x00000800. > (You can see this in the /usr/include/sys/auxv_386.h file on each system.) > > You might be able to use "env LD_DEBUG=cap" to see what capabilities the OS > thinks your hardware supports and "env LD_HWCAP=+RDSEED" to override that > detection. > > More info about this is documented in > https://docs.oracle.com/en/operating-systems/solaris/oracle-solaris/11.4/linkers-libraries/capability-processing.html > and on the illumos side in https://illumos.org/man/1/ld.so.1 . > > -alan-
ah, i see, much thanks for the info! i always liked the way sunpro binaries expose these cpu features by just using "file" or "ldd". that can save a lot of time investigating why something doesn't run. btw given its age, does it still make sense to use sunpro performance wise? maybe gcc and/or clang did catch up in the meantime or maybe got even better? _______________________________________________ openindiana-discuss mailing list [email protected] https://openindiana.org/mailman/listinfo/openindiana-discuss
