1 #!/bin/sh 2 3 # this function is slight modification of the one used in RPM 4 # found at https://bugzilla.redhat.com/show_bug.cgi?id=834073 5 # written by Alexander Larsson <alexl (at] redhat.com> 6 add_minidebug() 7 { 8 debuginfo="$1" ## we don't have separate debuginfo file 9 binary="$1" 10 11 dynsyms=`mktemp` 12 funcsyms=`mktemp` 13 keep_symbols=`mktemp` 14 mini_debuginfo=`mktemp` 15 16 # Extract the dynamic symbols from the main binary, there is no need to also have these 17 # in the normal symbol table 18 nm -D "$binary" --format=posix --defined-only | awk '{ print $1 }' | sort > "$dynsyms" 19 # Extract all the text (i.e. function) symbols from the debuginfo 20 nm "$debuginfo" --format=posix --defined-only | awk '{ if ($2 == "T" || $2 == "t") print $1 }' | sort > "$funcsyms" 21 # Keep all the function symbols not already in the dynamic symbol table 22 comm -13 "$dynsyms" "$funcsyms" > "$keep_symbols" 23 # Copy the full debuginfo, keeping only a minumal set of symbols and removing some unnecessary sections 24 objcopy -S --remove-section .gdb_index --remove-section .comment --keep-symbols="$keep_symbols" "$debuginfo" "$mini_debuginfo" &> /dev/null 25 #Inject the compressed data into the .gnu_debugdata section of the original binary 26 xz "$mini_debuginfo" 27 mini_debuginfo="${mini_debuginfo}.xz" 28 objcopy --add-section .gnu_debugdata="$mini_debuginfo" "$binary" 29 rm -f "$dynsyms" "$funcsyms" "$keep_symbols" "$mini_debuginfo" 30 31 strip "$binary" ## throw away the symbol table 32 } 33 34 35 TESTDIR=`pwd` 36 TEMPDIR=`mktemp --tmpdir -d libunwind-test-XXXXXXXXXX` 37 trap "rm -r -- $TEMPDIR" EXIT 38 39 cp crasher $TEMPDIR/crasher 40 if [ "$1" = "-minidebuginfo" ]; then 41 add_minidebug $TEMPDIR/crasher 42 fi 43 44 # create core dump 45 ( 46 cd $TEMPDIR 47 ulimit -c 10000 48 ./crasher backing_files 49 ) 2>/dev/null 50 COREFILE=$TEMPDIR/core* 51 52 # magic option -testcase enables checking for the specific contents of the stack 53 ./test-coredump-unwind $COREFILE -testcase `cat $TEMPDIR/backing_files` 54
