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Add implementation of WhereAmI() to support NO_AFFINITY=0 on ARM64 (#4648) 

* Add preliminary implementation of WhereAmI()
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Martin Kroeker 2024-04-17 08:25:17 +02:00 committed by GitHub
parent a0083fdf68
commit c57f9326d6
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1 changed files with 13 additions and 0 deletions
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13
common_arm64.h
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@ -55,6 +55,19 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef ASSEMBLER #ifndef ASSEMBLER
static __inline int WhereAmI(void){
uint64_t ret;
__asm__ volatile (
" mrs x0, mpidr_el1 \n"
" and x0, x0, 0xff \n"
:"=r" (ret)
:: "memory"
);
ret +=1;
if ((int)ret <0) ret = 0;
return (int)ret;
}
static __inline void blas_lock(volatile BLASULONG *address){ static __inline void blas_lock(volatile BLASULONG *address){
BLASULONG ret; BLASULONG ret;