XCOMM!/bin/sh -f
XCOMM $Xorg: elistgen.sun,v 1.3 2000/08/17 19:41:52 cpqbld Exp $
XCOMM
XCOMM ########################################################################
XCOMM Construct shared-library scoping mapfile for Solaris based on standardized
XCOMM export list description file
XCOMM
XCOMM Usage: exportlistgen libfoo.so libfoo.elist > mapfile.scope
XCOMM
XCOMM libfoo.so => shared library of interest
XCOMM libfoo.elist => Meta description of necessary export list.
XCOMM
XCOMM The output file, "mapfile.scope" may then be passed to the Solaris
XCOMM linker to reconstruct the shared library, libfoo.so.
XCOMM
XCOMM ########################################################################
XCOMM
XCOMM $XFree86: xc/config/util/elistgen.sun,v 1.8 2002/10/08 23:07:42 dawes Exp $
XCOMM Utility programs
FILTER=CXXFILT # C++ symbol demangler
AWK=nawk # Awk
XCOMM For nm, cat, pr, sed, awk, c++filt
PATH=/usr/bin:/bin:/usr/ccs/bin:/usr/ucb:$PATH
XCOMM Try to detect broken versions of c++filt.
if [ `echo _okay | ${FILTER:-cat}` != "_okay" ]; then
if [ -x /opt/SUNWspro/bin/c++filt ]; then
echo "# Your $FILTER is broken -- using /opt/SUNWspro/bin/c++filt."
FILTER=/opt/SUNWspro/bin/c++filt
else
echo "# ERROR: no working $FILTER available."
exit 1
fi;
fi;
XCOMM Temporary files
EXPORTLIST=/tmp/elistgen1.$$ # export directives from "libfoo.list"
NMLIST=/tmp/elistgen2.$$ # name list from libfoo.sl
FILTLIST=/tmp/elistgen3.$$ # demangled (C++) version of above
XCOMM Print useful information at the top of the output
echo "#" `date`
echo "# This scoping mapfile was produced by" $0
echo "# Export list description taken from:" $2
echo "# Target library:" $1
echo "# Target Operating System:" `uname -msrv`
echo "# "
XCOMM Extract the globally visible symbols from target library
XCOMM The NMLIST generated here is later used to cross-check the symbols in the
XCOMM nm stopped working on Solaris 2.5, use dump instead.
nm -p $1 | $AWK '/ [ TDBS] /{print $3}' > $NMLIST
XCOMM /usr/ccs/bin/dump -t -v $1 | $AWK '/(FUNC|OBJT).(GLOB|WEAK)/{print $8}' > $NMLIST
XCOMM Extract the globally visible symbols from target library
XCOMM The NMLIST generated here is later used to cross-check the symbols in the
${FILTER:-cat} < $NMLIST > $FILTLIST
XCOMM Clean up the export-list description file. Sort the directives.
$AWK '
BEGIN {
csyms = 0; # C public symbols in libfoo.list
cplusplus = 0; # C++ public symbols in libfoo.list
isyms = 0; # C internal symbols in libfoo.list
iplusplus = 0; # C++ internal symbols in libfoo.list
implicit = ""; # Handling of implicit symbols
}
$1 == "default" {
# A default clause suppresses warnings about implicit symbols.
if ($2 != "" && $2 != "force" && $2 != "public" && $2 != "private" && $2 != "internal") {
print "# Warning: illegal default clause:", $2 | "cat 1>&2";
next;
}
if (implicit != "")
print "# Warning: multiple default clauses." | "cat 1>&2";
implicit = $2;
next;
}
$1 == "force" {
csyms ++;
print $1 ";;" $2;
next;
}
$1 == "public" {
csyms ++;
print $1 ";;" $2;
next;
}
$1 == "publicC++" {
cplusplus ++;
string = $2;
for (n = 3; n <= NF; n++)
string = string " " $n;
print $1 ";;" string;
next;
}
$1 == "private" {
csyms ++;
print $1 ";;" $2;
next;
}
$1 == "privateC++" {
cplusplus ++;
string = $2;
for (n = 3; n <= NF; n++)
string = string " " $n;
print $1 ";;" string;
next;
}
$1 == "internal" {
isyms ++;
print $1 ";;" $2;
next;
}
$1 == "internalC++" {
iplusplus ++;
string = $2;
for (n = 3; n <= NF; n++)
string = string " " $n;
print $1 ";;" string;
next;
}
$1 == "#line" || $1 == "#" {
# cpp will have removed comments, but may have added other stuff.
next;
}
NF > 0 {
print "# Warning: unrecognized directive:", $0 | "cat 1>&2";
next;
}
END {
printf("# Exporting %d C and %d C++ symbols, hiding %d and %d.\n", csyms, cplusplus, isyms, iplusplus) | "cat 1>&2";
if (implicit != "") {
print "# Unspecified symbols are " implicit "." | "cat 1>&2";
print "default;;" implicit;
}
}
' $2 1>$EXPORTLIST
XCOMM Read in the above files and write result to stdout. The contents
XCOMM of NMLIST and FILTLIST are used to construct a symbol lookup table.
XCOMM The contents of EXPORTLIST are converted with the help of this table.
XCOMM Use ";" as a delimiter in the symbol lookup table.
(pr -m -s";" -t -w1024 $NMLIST $FILTLIST | sed 's/ / /g'; cat $EXPORTLIST) | $AWK '
BEGIN {
FS = ";";
implicit = 0;
}
NF == 2 {
# This is "pr" output, i.e., symbol translation table
r2=$2;
gsub(/static /,"",r2); # remove keyword "static" as above
gsub(/ /,"",r2); # Remove spaces because c++filt is unpredictable
syms[r2] = $1;
r1=$1;
gsub(/ /,"",r1);
mangled[r1] = 1; # Save the mangling because the export lists
# sometimes use it instead of a prototype.
next;
}
NF == 3 && $1 == "default" {
# Treatment of unspecified symbols.
if ($3 == "internal" || $3 == "internalC++")
implicit = 1;
else if ($3 == "private" || $3 == "privateC++")
implicit = 2;
else if ($3 == "public" || $3 == "publicC++")
implicit = 3;
else # $3 == "force"
implicit = 4;
next;
}
NF == 3 {
# Generate canonical demangled form as an alternate symbol.
alt=$3;
gsub(/ \.\.\./,",...",alt); # change " ..." to ",..." to match c++filt
gsub(/ /,"",alt); # remove all spaces
# An export directive. Parse our instructions for this symbol.
if ($1 == "internal" || $1 == "internalC++")
export = 1;
else if ($3 == "private" || $3 == "privateC++")
export = 2;
else if ($3 == "public" || $3 == "publicC++")
export = 3;
else # $3 == "force"
export = 4;
# Process it.
if ((length(syms[alt]) > 0) || mangled[alt]) {
# This symbol is present in the library.
if (donelist[alt])
print "# Warning: Duplicate entry for", $3,
"in export list" | "cat 1>&2";
if (donelist[alt] < export) {
donelist[alt] = export;
}
} else {
# Print forced-export symbols without complaining.
if (export == 4) {
donelist[alt] = export;
} else {
print "# Warning:", $3,
"was not in the nm list for this library" | "cat 1>&2";
}
}
next;
}
END {
# Ignore magic linker symbols.
if (implicit == 0) {
if (!donelist["_DYNAMIC"])
donelist["_DYNAMIC"] = 1;
if (!donelist["_GLOBAL_OFFSET_TABLE_"])
donelist["_GLOBAL_OFFSET_TABLE_"] = 1;
if (!donelist["_PROCEDURE_LINKAGE_TABLE_"])
donelist["_PROCEDURE_LINKAGE_TABLE_"] = 1;
if (!donelist["_edata"])
donelist["_edata"] = 1;
if (!donelist["_end"])
donelist["_end"] = 1;
if (!donelist["_etext"])
donelist["_etext"] = 1;
}
# Process implicit symbols.
for (i in syms) {
if (donelist[i] == 0 && length(syms[i]) > 0) {
if (implicit == 0) {
# Ignore magic symbols introduced by the C++ compiler.
if ((syms[i] !~ /^__vtbl__[0-9]*_/) && (syms[i] !~ /^__ptbl_vec__/))
print "# Warning:", syms[i], "was not in the export list" | "cat 1>&2";
} else {
donelist[i] = implicit;
}
}
}
# Generate the linker file.
print "";
print "SUNW.1.1 {";
print " global:";
for (i in syms)
if (donelist[i] >= 2 && length(syms[i]) > 0)
print " " syms[i] ";";
print " local:";
print " *;";
print "};";
print "";
print "SUNW_private.1.1 {";
print " global:";
for (i in syms)
if (donelist[i] == 1 && length(syms[i]) > 0)
print " " syms[i] ";";
print "} SUNW.1.1;"
}
'
XCOMM Clean up temporary files
rm $EXPORTLIST
rm $NMLIST
rm $FILTLIST