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-XCOMM!/bin/sh
-XCOMM $Xorg: elistgen.usl,v 1.3 2000/08/17 19:41:52 cpqbld Exp $
-XCOMM
-XCOMM #########################################################################
-XCOMM Construct shared-library export lists for Novell based on standardized
-XCOMM export list description file
-XCOMM
-XCOMM Usage: exportlistgen libFoo.so libFoo.elist > libFoo.lopt
-XCOMM
-XCOMM libFoo.so => shared library of interest
-XCOMM libFoo.elist => Meta description of necessary export list.
-XCOMM
-XCOMM The output file, "libFoo.lopt" may then be passed to the linker to
-XCOMM reconstruct the shared library.
-XCOMM
-XCOMM (c) Copyright 1996 Digital Equipment Corporation.
-XCOMM (c) Copyright 1996 Hewlett-Packard Company.
-XCOMM (c) Copyright 1996 International Business Machines Corp.
-XCOMM (c) Copyright 1996 Sun Microsystems, Inc.
-XCOMM (c) Copyright 1996 Novell, Inc.
-XCOMM (c) Copyright 1996 FUJITSU LIMITED.
-XCOMM (c) Copyright 1996 Hitachi.
-XCOMM
-XCOMM #########################################################################
-XCOMM
-XCOMM $XFree86$
-
-XCOMM Utility programs
-FILTER=CXXFILT # C++ symbol demangler
-AWK=awk # awk
-
-XCOMM For nm, cat, pr, sed, awk, c++filt
-PATH=/usr/bin:/bin:/usr/ucb:/usr/ccs/bin
-
-XCOMM Temporary files
-EXPORTLIST=/tmp/elistgen1.$$ # list of export symbols from "libfoo.elist"
-NMLIST=/tmp/elistgen2.$$ # name list from libfoo.sl
-FILTLIST=/tmp/elistgen3.$$ # demangled (C++) version of NMLIST
-
-XCOMM Print useful information at the top of the output
-echo "#" `date`
-echo "# This linker options list was produced by" $0
-echo "# Input 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 supplied export-list.
-nm -p $1 | $AWK '
- / [TD] [^\$]/{print $3} # Text, Data, BSS, or Secondary symbols
-' > $NMLIST
-
-XCOMM Demangle the global library symbols. This operation is necessary to convert
-XCOMM mangled C++ symbols into their C++ notation.
-${FILTER:-cat} $NMLIST > $FILTLIST
-
-XCOMM Clean up the export-list description file.
-XCOMM Note that C++ symbols may have embedded spaces in them.
-cat $2 | $AWK '
- BEGIN {
- csyms = 0; # C language symbols in libfoo.list
- cplusplus = 0; # C++ language symbols in libfoo.list
- isyms = 0; # C internal symbols in libfoo.elist
- iplusplus = 0; # C++ internal symbols in libfoo.elist
- 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" || $1 == "public" || $1 == "private" {
- csyms ++;
- print $1 ";;" $2;
- next;
- }
- $1 == "publicC++" || $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;
- }
- }
-' > $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
- syms[$2] = $1;
- next;
- }
- NF == 3 && $1 == "default" {
- # Treatment of unspecified symbols.
- if ($3 == "internal")
- 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 {
- # Parse our instructions for this symbol.
- if ($1 == "internal" || $1 == "internalC++")
- export = 1;
- else if ($1 == "private" || $1 == "privateC++")
- export = 2;
- else if ($1 == "public" || $1 == "publicC++")
- export = 3;
- else # $1 == "force"
- export = 4;
-
- # Process it.
- if (length(syms[$3]) > 0) {
- # This symbol is present in the library.
- if (donelist[$3])
- print "# Warning: Duplicate entry for", $3,
- "in export list" | "cat 1>&2";
- if (donelist[$3] < export) {
- if (export > 1)
- print syms[$3];
- donelist[$3] = export;
- }
- } else {
- # Do not complain about unknown forced-export symbols.
- if (export == 4) {
- print $3;
- donelist[$3] = export;
- } else
- print "# Warning:", $3,
- "was not in the nm list for this library" | "cat 1>&2";
- }
-
- next;
- }
- END {
- # Ignore built-in linker symbols.
- if (implicit == 0) {
- if (!donelist["_DYNAMIC"])
- donelist["_DYNAMIC"] = 1;
- if (!donelist["_GLOBAL_OFFSET_TABLE_"])
- donelist["_GLOBAL_OFFSET_TABLE_"] = 1;
- if (!donelist["_edata"])
- donelist["_edata"] = 1;
- if (!donelist["_end"])
- donelist["_end"] = 1;
- if (!donelist["_etext"])
- donelist["_etext"] = 1;
- }
-
- # Process implicit symbols.
- for (i in syms) {
- if (!donelist[i] && (length(syms[i]) > 0)) {
- # Ignore C++ compiler symbols
- if (implicit == 0 &&
- (syms[i] !~ /^__vtbl__[0-9]*_/) &&
- (syms[i] !~ /^__cpp_unixware_[0-9]*$/))
- print "# Warning:", syms[i],
- "was not in the export list" | "cat 1>&2";
- if (implicit > 1)
- print syms[i];
- }
- }
- }
-'
-
-XCOMM Clean up temporary files
-rm $EXPORTLIST
-rm $NMLIST
-rm $FILTLIST
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 15:11:41 +0000