#! /bin/sh

# Identify non-compat symbols exported from shared libraries that are
# not tested by any glibc testcase.

# $1 is the awk program to use.  $2 is the path to abilist-mod.awk.
# $3 is the objdump program to use.  $4 is the nm program to use.  Run
# this from a glibc build tree where the testsuite has been run.

set -e

export LC_ALL=C

AWK=$1
abilist_mod=$2
OBJDUMP=$3
NM=$4

libraries="ld libBrokenLocale libanl libc libcrypt libdl libm libnsl \
  libpthread libresolv librt libthread_db libutil"

ld_path=elf/ld.so
libBrokenLocale_path=locale/libBrokenLocale.so
libanl_path=resolv/libanl.so
libc_path=libc.so
libcrypt_path=crypt/libcrypt.so
libdl_path=dlfcn/libdl.so
libm_path=math/libm.so
libnsl_path=nis/libnsl.so
libpthread_path=nptl/libpthread.so
libresolv_path=resolv/libresolv.so
librt_path=rt/librt.so
libthread_db_path=nptl_db/libthread_db.so
libutil_path=login/libutil.so

for lib in $libraries; do
  eval path=\$${lib}_path
  $OBJDUMP --dynamic-syms $path > ldynsym-$lib
  $AWK -f $abilist_mod ldynsym-$lib > lsyms-unsorted-$lib
  sort < lsyms-unsorted-$lib > lsyms-$lib
  rm -f ldynsym-$lib lsyms-unsorted-$lib
done

: > tested-syms-unsorted
for testout in $(find . -name '*.out'); do
  test=${testout%.out}
  if [ -f $test ] && file $test | grep -q 'ELF.*dynamic'; then
    $NM -D $test | sed 's/.* //' >> tested-syms-unsorted
  fi
done
sort -u < tested-syms-unsorted > tested-syms
rm -f tested-syms-unsorted

for lib in $libraries; do
  echo "Untested symbols in $lib:"
  echo
  while read sym; do
    if ! grep -q "^$sym\$" tested-syms; then
      echo $sym
    fi
  done < lsyms-$lib
  echo
done