unjit

Overview

disassemble code from a living process;
based on LLVM disassembler;
by default disassemble all (JITed) subprograms found in /tmp/perf-$pid.map;
symbolication of JIT-ed symbols using /tmp/perf-$pid.map;
symbolication of AOT symbols using ELF SHT_SYMTAB and SHT_DYNSYM sections;
does not ptrace, does not stop the process;
output similar to the output of objdump and compatible with what Linux perf expects.

unjit -p $pid > dis.txt

perf top -p $pid --objdump ./perfobjdump

The /tmp/perf-${pid}.map is a file used by JIT compilers to tell Linux perf the location and name of JITed subprograms. The format is:

$startAddressInHexa $sizeInHexa $name

Example:

41f3ae82 34 foo
41f3aec6 52 bar

Without any specific order: