1 # This awk script processes the output of objdump --dynamic-syms
2 # into a simple format that should not change when the ABI is not changing.
6 defout = "/dev/stderr";
8 defout = "/dev/stdout";
12 /[^ :]+\.so\.[0-9]+:[ ]+.file format .*$/ {
13 if (parse_names && soname != "")
17 sub(/:$/, "", sofullname);
19 sub(/^.*\//, "", soname);
20 sub(/\.so\.[0-9]+$/, "", soname);
26 /^[0-9a-fA-F]+ / { sub(/ /, " - ") }
29 $4 == "*UND*" { next }
34 $2 == "g" || $2 == "w" && NF == 7 {
42 gsub(/[()]/, "", version);
44 if (version == "GLIBC_PRIVATE") next;
46 if (type == "D" && $4 == ".tbss") {
49 else if (type == "D" && $4 == ".opd") {
53 else if (type == "DO" && $4 == "*ABS*") {
57 else if (type == "DO") {
60 else if (type == "DF") {
65 print symbol, version, weak, "?", type, $4, $5 > defout;
69 print symbol, version, weak, "?", type, $4, $5 > defout;
73 # Disabled -- weakness should not matter to shared library ABIs any more.
74 #if (weak == "w") type = tolower(type);
75 desc = " " symbol " " type size;
77 if (version in versions) {
78 versions[version] = versions[version] "\n" desc;
81 versions[version] = desc;
87 NF == 0 || /DYNAMIC SYMBOL TABLE/ || /file format/ { next }
90 print "Don't grok this line:", $0 > defout
93 function emit(tofile) {
95 for (version in versions) {
101 split(verslist, s, "\n");
102 if (version < s[1]) {
104 for (i = 1; i <= nverslist; ++i) {
105 verslist = verslist "\n" s[i];
110 for (i = 2; i <= nverslist; ++i) {
111 if (version < s[i]) break;
112 verslist = verslist "\n" s[i];
114 verslist = verslist "\n" version;
115 for (; i <= nverslist; ++i) {
116 verslist = verslist "\n" s[i];
123 out = prefix soname ".symlist";
124 if (soname in outfiles)
125 out = out "." ++outfiles[soname];
127 outfiles[soname] = 1;
131 split(verslist, order, "\n");
132 for (i = 1; i <= nverslist; ++i) {
136 print version >> out;
138 outpipe = "sort >> " out;
142 print versions[version] | outpipe;
145 delete versions[version];
147 for (version in versions)
148 delete versions[version];
151 print "wrote", out, "for", sofullname;
157 else if (soname != "") {