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# This awk script processes the output of objdump --dynamic-syms
# into a simple format that should not change when the ABI is not changing.
BEGIN { outpipe = "sort" }
# Normalize columns.
/^[0-9a-fA-F]+ / { sub(/ /, " - ") }
# Skip undefineds.
$4 == "*UND*" { next }
# Skip locals.
$2 == "l" { next }
$2 == "g" || $2 == "w" && NF == 7 {
weak = ($2 == "w") ? "weak" : "strong";
type = $3;
size = strtonum("0x" $5);
version = $6;
symbol = $7;
gsub(/[()]/, "", version);
if (version == "GLIBC_PRIVATE") next;
if (type == "D" && $4 == ".tbss") {
print symbol, version, weak, "TLS", size | outpipe;
}
else if (type == "D" && $4 == ".opd") {
print symbol, version, weak, "FDESC" | outpipe;
}
else if (type == "DO" && $4 == "*ABS*") {
print symbol, version, weak, "ABS" | outpipe;
}
else if (type == "DO") {
print symbol, version, weak, "DATA", size | outpipe;
}
else if (type == "DF") {
print symbol, version, weak, "FUNC" | outpipe;
}
else {
print symbol, version, weak, "UNEXPECTED", type, $4, $5;
}
next;
}
# Header crapola.
NF == 0 || /DYNAMIC SYMBOL TABLE/ || /file format/ { next }
{
print "Don't grok this line:", $0
}
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