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then > exit 1 > fi > > +# Disassemble foo(). (simplify with --disassemble=foo) > + > +objdump -d main | awk ' > +BEGIN { use = 0 } # start by not printing lines > +use == 1 && NF == 0 { exit } # if printing lines but hit a blank, then exit > +use == 1 { print } # print lines > +/:/ { use = 1 } # turn on printing when we hit ":" (without printing this line itself) > +' > disasm_foo.txt > +if [ $? -ne 0 ]; then > + echo cannot objdump main > + objdump -d main > + exit 1 > +fi > + > +# From the disassembly, get the PCs for foo()'s instructions. > + > +pcs=`awk '{print strtonum("0x"$1)}' disasm_foo.txt` > +pc0=`echo $pcs | awk '{print $1}'` > + > # Run dtrace. > > cat >> pidprobes.d <<'EOF' > @@ -153,20 +172,6 @@ if [ `awk 'NF != 0 { print $1 }' dtrace.out | uniq | wc -l` -ne 1 ]; then > fi > pid=`awk 'NF != 0 { print $1 }' dtrace.out | uniq` > > -# Disassemble foo(). > - > -objdump -d main | awk ' > -BEGIN { use = 0 } # start by not printing lines > -use == 1 && NF == 0 { exit } # if printing lines but hit a blank, then exit > -use == 1 { print } # print lines > -/:/ { use = 1 } # turn on printing when we hit ":" (without printing this line itself) > -' > disasm_foo.txt > - > -# From the disassembly, get the PCs for foo()'s instructions. > - > -pcs=`awk '{print strtonum("0x"$1)}' disasm_foo.txt` > -pc0=`echo $pcs | awk '{print $1}'` > - > # From the disassembly, get the PCs for USDT probes. > # Check libdtrace/dt_link.c's arch-dependent dt_modtext() to see > # what sequence of instructions signal a USDT probe. > -- > 2.43.5 >