glibc/scripts/check-textrel.awk

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# This awk script expects to get command-line files that are each
# the output of 'readelf -d' on a single shared object.
# It exits successfully (0) if none contained any TEXTREL markers.
# It fails (1) if any did contain a TEXTREL marker.
# It fails (2) if the input did not take the expected form.
BEGIN { result = textrel = sanity = 0 }
function check_one(name) {
if (!sanity) {
print name ": *** input did not look like readelf -d output";
result = 2;
} else if (textrel) {
print name ": *** text relocations used";
result = result ? result : 1;
} else {
print name ": OK";
}
textrel = sanity = 0;
}
FILENAME != lastfile {
if (lastfile)
check_one(lastfile);
lastfile = FILENAME;
}
$1 == "Tag" && $2 == "Type" { sanity = 1 }
$2 == "(TEXTREL)" { textrel = 1 }
$2 == "(FLAGS)" {
for (i = 3; i <= NF; ++i) {
if ($i == "TEXTREL")
textrel = 1;
}
}
END {
check_one(lastfile);
exit(result);
}