1 #!/bin/sh 2 3 # Check if the passed in (CAPABILITY_WORD) matches a value found in the 4 # current hwcap aux vector. 5 6 # return '0' to indicate the capability was found. 7 # return '1' for not found, or any other error condition. 8 9 CAPABILITY_WORD=$1 10 11 # SANITY CHECK Begin: 12 # These are potential hwcap values as found in the glibc dl-procinfo.c 13 # sources as of July 2015. 14 P_HWCAP_1=" vsx arch_2_06 power6x dfp pa6t arch_2_05 ic_snoop smt booke" 15 P_HWCAP_2=" cellbe power5+ power5 power4 notb efpdouble efpsingle spe" 16 P_HWCAP_3=" ucache 4xxmac mmu fpu altivec ppc601 ppc64 ppc32 " 17 P_HWCAP2_1=" tar isel ebb dscr htm arch_2_07 " 18 CAPABILITY_FOUND="no" 19 for POTENTIAL_CAP in $P_HWCAP_1 $P_HWCAP_2 $P_HWCAP_3 $P_HWCAP2_1 ; do 20 if [ "x$CAPABILITY_WORD" = "x$POTENTIAL_CAP" ]; then 21 CAPABILITY_FOUND="yes" 22 break 23 fi 24 done 25 if [ x$CAPABILITY_FOUND = "xno" ]; then 26 echo "Warning: did not find $CAPABILITY_WORD in the potential capabilities list." 27 echo " LD_SHOW_AUXV=1 /bin/true | grep ^AT_HWCAP " 28 echo " Double-check that the input value [$CAPABILITY_WORD] is valid." 29 fi 30 # SANITY CHECK End 31 32 # Capability Check Begin: 33 LD_SHOW_AUXV=1 /bin/true | grep ^AT_HWCAP | grep -w $CAPABILITY_WORD 2>&1 > /dev/null 34 if [ "$?" -eq "0" ]; then 35 #echo "found the capability" 36 exit 0 37 elif [ "$?" -eq "2" ]; then 38 # echo "grep failure" 39 exit 1 40 else 41 #echo "did not find the capability" 42 exit 1 43 fi 44 45
