On Mon, Jan 16, 2023 at 10:21 PM Otto Kekäläinen <o...@debian.org> wrote: > > Are there any ARM experts here interested in helping MariaDB 10.11 run > better on armel/armhf? > > The issue is explained well in upstream bug > https://jira.mariadb.org/browse/MDEV-30411 but upstream is not > investing developers/testing into armel/armhf, so I wanted to check if > anybody here could help. > > Basically the upstream header > https://github.com/MariaDB/server/tree/10.11/include/my_rdtsc.h needs > to be extended to handle armel/armhf (and maybe also mipsel and > mips64el) properly so it would make all official Debian architectures > happy.
I believe Andy Polyakov performed the heavy lifting for OpenSSL. I would check the OpenSSL code. It should not be much more than a copy/paste. Or if you don't like the license, convert the *.pl file to a source file to see how OpenSSL does it, then write your own. openssl$ grep -IR rdtsc | ... crypto/alphacpuid.pl:.end OPENSSL_rdtsc crypto/alphacpuid.pl:.ent OPENSSL_rdtsc crypto/alphacpuid.pl:.globl OPENSSL_rdtsc crypto/alphacpuid.pl:OPENSSL_rdtsc: crypto/armcap.c:uint32_t OPENSSL_rdtsc(void) crypto/c64xpluscpuid.pl: .asg OPENSSL_rdtsc,_OPENSSL_rdtsc crypto/c64xpluscpuid.pl: .global _OPENSSL_rdtsc crypto/c64xpluscpuid.pl:_OPENSSL_rdtsc: crypto/cpuid.c:uint32_t OPENSSL_rdtsc(void) crypto/ia64cpuid.S:.endp OPENSSL_rdtsc# crypto/ia64cpuid.S:.global OPENSSL_rdtsc# crypto/ia64cpuid.S:.proc OPENSSL_rdtsc# crypto/ia64cpuid.S:OPENSSL_rdtsc: crypto/loongarch64cpuid.pl:# uint32_t OPENSSL_rdtsc(void) crypto/loongarch64cpuid.pl:.globl OPENSSL_rdtsc crypto/loongarch64cpuid.pl:.type OPENSSL_rdtsc,\@function crypto/loongarch64cpuid.pl:OPENSSL_rdtsc: crypto/pariscid.pl: .EXPORT OPENSSL_rdtsc,ENTRY crypto/pariscid.pl:OPENSSL_rdtsc crypto/ppccap.c: OPENSSL_rdtsc_mfspr268(); crypto/ppccap.c: OPENSSL_rdtsc_mftb(); crypto/ppccap.c: return OPENSSL_rdtsc_mfspr268(); crypto/ppccap.c: return OPENSSL_rdtsc_mftb(); crypto/ppccap.c:long OPENSSL_rdtsc_mfspr268(void); crypto/ppccap.c:long OPENSSL_rdtsc_mftb(void); crypto/ppccap.c:uint32_t OPENSSL_rdtsc(void) crypto/ppccpuid.pl:.OPENSSL_rdtsc_mfspr268: crypto/ppccpuid.pl:.OPENSSL_rdtsc_mftb: crypto/ppccpuid.pl:.globl .OPENSSL_rdtsc_mfspr268 crypto/ppccpuid.pl:.globl .OPENSSL_rdtsc_mftb crypto/riscvcap.c:uint32_t OPENSSL_rdtsc(void) crypto/s390xcpuid.pl:.globl OPENSSL_rdtsc crypto/s390xcpuid.pl:.size OPENSSL_rdtsc,.-OPENSSL_rdtsc crypto/s390xcpuid.pl:.type OPENSSL_rdtsc,\@function crypto/s390xcpuid.pl:OPENSSL_rdtsc: crypto/sparcv9cap.c:uint32_t OPENSSL_rdtsc(void) crypto/x86_64cpuid.pl: rdtsc crypto/x86_64cpuid.pl: rdtsc # collect 1st diff crypto/x86_64cpuid.pl: rdtsc # collect 1st tick crypto/x86_64cpuid.pl:.Loop: rdtsc crypto/x86_64cpuid.pl:.globl OPENSSL_rdtsc crypto/x86_64cpuid.pl:.size OPENSSL_rdtsc,.-OPENSSL_rdtsc crypto/x86_64cpuid.pl:.type OPENSSL_rdtsc,\@abi-omnipotent crypto/x86_64cpuid.pl:OPENSSL_rdtsc: crypto/x86cpuid.pl: &rdtsc (); You can convert a *.pl file to a source file that can be assembled or compiled by following the instructions at https://wiki.openssl.org/index.php/Cryptogams_AES or https://wiki.openssl.org/index.php/Cryptogams_SHA. Jeff
