1 # Create global symbol declarations, transfer vector, and
2 # linker options files for PerlShr.
5 # $cflags - command line qualifiers passed to cc when preprocesing perl.h
6 # Note: A rather simple-minded attempt is made to restore quotes to
7 # a /Define clause - use with care.
8 # $objsuffix - file type (including '.') used for object files.
9 # $libperl - Perl object library.
10 # $extnames - package names for static extensions (used to generate
11 # linker options file entries for boot functions)
12 # $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
16 # PerlShr_Attr.Opt - linker options file which speficies that global vars
17 # be placed in NOSHR,WRT psects. Use when linking any object files
18 # against PerlShr.Exe, since cc places global vars in SHR,WRT psects
20 # PerlShr_Bld.Opt - declares universal symbols for PerlShr.Exe
21 # Perlshr_Gbl*.Mar, Perlshr_Gbl*.Obj (VAX only) - declares global symbols
22 # for global vars (done here because gcc can't globaldef) and creates
23 # transfer vectors for routines on a VAX.
24 # PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
25 # to the linker when building PerlShr.Exe.
28 # - figure out a good way to collect global vars in one psect, given that
29 # we can't use globaldef because of gcc.
30 # - then, check for existing files and preserve symbol and transfer vector
31 # order for upward compatibility
32 # - then, add GSMATCH to options file - but how do we insure that new
33 # library has everything old one did
34 # (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
36 # Author: Charles Bailey bailey@genetics.upenn.edu
40 $debug = $ENV{'GEN_SHRFLS_DEBUG'};
42 print "gen_shrfls.pl Rev. 14-Dec-1997\n" if $debug;
44 if ($ARGV[0] eq '-f') {
45 open(INP,$ARGV[1]) or die "Can't read input file $ARGV[1]: $!\n";
46 print "Input taken from file $ARGV[1]\n" if $debug;
50 push(@ARGV,split(/\|/,$_));
53 print "Read input data | ",join(' | ',@ARGV)," |\n" if $debug > 1;
56 $cc_cmd = shift @ARGV;
58 # Someday, we'll have $GetSyI built into perl . . .
59 $isvax = `\$ Write Sys\$Output F\$GetSyI(\"HW_MODEL\")` <= 1024;
60 print "\$isvax: \\$isvax\\\n" if $debug;
62 print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
63 $docc = ($cc_cmd !~ /^~~/);
64 print "\$docc = $docc\n" if $debug;
67 # put quotes back onto defines - they were removed by DCL on the way in
68 if (($prefix,$defines,$suffix) =
69 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
70 $defines =~ s/^\((.*)\)$/$1/;
71 @defines = split(/,/,$defines);
72 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
75 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
77 # check for gcc - if present, we'll need to use MACRO hack to
78 # define global symbols for shared variables
80 $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
81 or 0; # make debug output nice
82 $isvaxc = (!$isgcc && $isvax &&
83 # Check exit status too, in case message is shut off
84 (`$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/ || $? == 0x38240))
85 or 0; # again, make debug output nice
86 print "\$isgcc: $isgcc\n" if $debug;
87 print "\$isvaxc: $isvaxc\n" if $debug;
89 if (-f 'perl.h') { $dir = '[]'; }
90 elsif (-f '[-]perl.h') { $dir = '[-]'; }
91 else { die "$0: Can't find perl.h\n"; }
94 ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
95 $isgcc = $cc_cmd =~ /case_hack/i
96 or 0; # for nice debug output
97 $isvaxc = (!$isgcc && $cc_cmd !~ /standard=/i)
98 or 0; # again, for nice debug output
99 print "\$isgcc: \\$isgcc\\\n" if $debug;
100 print "\$isvaxc: \\$isvaxc\\\n" if $debug;
101 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
104 $objsuffix = shift @ARGV;
105 print "\$objsuffix: \\$objsuffix\\\n" if $debug;
106 $dbgprefix = shift @ARGV;
107 print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
108 $olbsuffix = shift @ARGV;
109 print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
110 $libperl = "${dbgprefix}libperl$olbsuffix";
111 $extnames = shift @ARGV;
112 print "\$extnames: \\$extnames\\\n" if $debug;
113 $rtlopt = shift @ARGV;
114 print "\$rtlopt: \\$rtlopt\\\n" if $debug;
116 # This part gets tricky. VAXC creates global symbols for each of the
117 # constants in an enum if that enum is ever used as the data type of a
118 # global[dr]ef. We have to detect enums which are used in this way, so we
119 # can set up the constants as universal symbols, since anything which
120 # #includes perl.h will want to resolve these global symbols.
121 # We're using a weak test here - we basically know that the only enums
122 # we need to handle now are the big one in opcode.h, and the
123 # "typedef enum { ... } expectation" in perl.h, so we hard code
124 # appropriate tests below. Since we can't know in general whether a given
125 # enum will be used elsewhere in a globaldef, it's hard to decide a
126 # priori whether its constants need to be treated as global symbols.
130 return unless $isvaxc;
132 return unless /^\s+(OP|X)/; # we only want opcode and expectation enums
133 print "\tchecking for enum constant\n" if $debug > 1;
135 $line =~ s/,?\s*\n?$//;
136 print "\tfiltered to \\$line\\\n" if $debug > 1;
137 if ($line =~ /(\w+)$/) {
138 print "\tconstant name is \\$1\\\n" if $debug > 1;
145 my($const) = $line =~ /^EXTCONST/;
147 print "\tchecking for global variable\n" if $debug > 1;
148 $line =~ s/\s*EXT/EXT/;
149 $line =~ s/INIT\s*\(.*\)//;
152 $line =~ s/\W*;?\s*$//;
153 $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
154 print "\tfiltered to \\$line\\\n" if $debug > 1;
155 if ($line =~ /(\w+)$/) {
156 print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
157 if ($const) { $cvars{$1}++; }
158 else { $vars{$1}++; }
161 my($type) = $line =~ /^\s*EXT\w*\s+(\w+)/;
162 print "\tchecking for use of enum (type is \"$type\")\n" if $debug > 2;
163 if ($type eq 'expectation') {
164 $used_expectation_enum++;
165 print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
167 if ($type eq 'opcode') {
169 print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
177 print "\tchecking for global routine\n" if $debug > 1;
178 if ( $line =~ /(\w+)\s+\(/ ) {
179 print "\troutine name is \\$1\\\n" if $debug > 1;
180 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
181 print "\tskipped\n" if $debug > 1;
187 $used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
189 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
190 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
193 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
195 LINE: while (<CPP>) {
196 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
197 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
198 print "vms_proto>> $_" if $debug > 2;
199 if (/^\s*EXT/) { &scan_var($_); }
200 else { &scan_func($_); }
201 last LINE unless $_ = <CPP>;
203 print "vmsish.h>> $_" if $debug > 2;
204 if (/^\s*EXT/) { &scan_var($_); }
205 last LINE unless $_ = <CPP>;
207 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
208 print "opcode.h>> $_" if $debug > 2;
209 if (/^OP \*\s/) { &scan_func($_); }
210 if (/^\s*EXT/) { &scan_var($_); }
211 if (/^\s+OP_/) { &scan_enum($_); }
212 last LINE unless $_ = <CPP>;
214 while (/^typedef enum/ .. /^\}/) {
215 print "global enum>> $_" if $debug > 2;
217 last LINE unless $_ = <CPP>;
219 while (/^#.*thread\.h/i .. /^#.*perl\.h/i) {
220 print "thread.h>> $_" if $debug > 2;
221 if (/\s*^EXT/) { &scan_var($_); }
222 else { &scan_func($_); }
223 last LINE unless $_ = <CPP>;
225 while (/^#.*proto\.h/i .. /^#.*perl\.h/i) {
226 print "proto.h>> $_" if $debug > 2;
227 if (/\s*^EXT/) { &scan_var($_); }
228 else { &scan_func($_); }
229 last LINE unless $_ = <CPP>;
231 print $_ if $debug > 3 && ($debug > 5 || length($_));
232 if (/^\s*EXT/) { &scan_var($_); }
237 # Kluge to determine whether we need to add EMBED prefix to
238 # symbols read from local list. vmsreaddirversions() is a VMS-
239 # specific function whose Perl_ prefix is added in vmsish.h
240 # if EMBED is #defined.
241 $embed = exists($fcns{'Perl_vmsreaddirversions'}) ? 'Perl_' : '';
246 ($key,$array) = split('=',$_);
248 print "Adding $key to \%$array list\n" if $debug > 1;
251 foreach (split /\s+/, $extnames) {
253 $pkgname =~ s/::/__/g;
254 $fcns{"boot_$pkgname"}++;
255 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
258 # If we're using VAXC, fold in the names of the constants for enums
259 # we've seen as the type of global vars.
261 foreach (keys %enums) {
263 $vars{$_}++ if $used_opcode_enum;
267 $vars{$_}++ if $used_expectation_enum;
270 print STDERR "Unrecognized enum constant \"$_\" ignored\n";
274 # gcc creates this as a SHR,WRT psect in globals.c, but we
275 # don't see it in the perl.h scan, since it's only declared
276 # if DOINIT is #defined. Bleah. It's cheaper to just add
277 # it by hand than to add /Define=DOINIT to the preprocessing
278 # run and wade through all the extra junk.
279 $vars{"${embed}Error"}++;
282 # Eventually, we'll check against existing copies here, so we can add new
283 # symbols to an existing options file in an upwardly-compatible manner.
286 open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
287 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
289 open(MAR,">${dir}perlshr_gbl${marord}.mar")
290 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
291 print MAR "\t.title perlshr_gbl$marord\n";
294 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
295 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
297 foreach $var (sort (keys %vars,keys %cvars)) {
298 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
299 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
300 # This hack brought to you by the lack of a globaldef in gcc.
302 if ($count++ > 200) { # max 254 psects/file
303 print MAR "\t.end\n";
306 open(MAR,">${dir}perlshr_gbl${marord}.mar")
307 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
308 print MAR "\t.title perlshr_gbl$marord\n";
311 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
312 print MAR "\t${var}:: .blkl 1\n";
316 print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
317 foreach $func (sort keys %fcns) {
319 print MAR "\t.transfer $func\n";
320 print MAR "\t.mask $func\n";
321 print MAR "\tjmp G\^${func}+2\n";
323 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
326 print MAR "\t.end\n";
330 open(OPTATTR,">${dir}perlshr_attr.opt")
331 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
333 print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
336 foreach $var (sort keys %cvars) {
337 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
339 foreach $var (sort keys %vars) {
340 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
344 print OPTATTR "! No additional linker directives are needed when using DECC\n";
348 $incstr = 'perl,globals';
350 $drvrname = "Compile_shrmars.tmp_".time;
351 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
352 print DRVR "\$ Set NoOn\n";
353 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
354 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
355 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
356 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
357 print DRVR "\$ Set Verify\n";
358 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
360 push(@symfiles,"perlshr_gbl$marord");
361 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
362 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
364 # We had to have a working miniperl to run this program; it's probably the
365 # one we just built. It depended on LibPerl, which will be changed when
366 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
367 # and so, therefore, will all of its dependents . . .
368 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
369 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
370 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
371 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
375 # Initial hack to permit building of compatible shareable images for a
376 # given version of Perl.
377 if ($ENV{PERLSHR_USE_GSMATCH}) {
378 my $major = int($] * 1000) & 0xFF; # range 0..255
379 my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
380 print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
381 foreach (@symfiles) {
382 print OPTBLD "CLUSTER=\$\$TRANSFER_VECTOR,,,$_$objsuffix\n";
385 elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
386 # Include object modules and RTLs in options file
387 # Linker wants /Include and /Library on different lines
388 print OPTBLD "$libperl/Include=($incstr)\n";
389 print OPTBLD "$libperl/Library\n";
390 open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
391 while (<RTLOPT>) { print OPTBLD; }
395 exec "\$ \@$drvrname" if $isvax;
400 # Oddball cases, so we can keep the perl.h scan above simple
401 rcsid=vars # declared in perl.c
402 regkind=vars # declared in regcomp.h
403 simple=vars # declared in regcomp.h
404 varies=vars # declared in regcomp.h
405 watchaddr=vars # declared in run.c
406 watchok=vars # declared in run.c
407 yychar=vars # generated by byacc in perly.c
408 yycheck=vars # generated by byacc in perly.c
409 yydebug=vars # generated by byacc in perly.c
410 yydefred=vars # generated by byacc in perly.c
411 yydgoto=vars # generated by byacc in perly.c
412 yyerrflag=vars # generated by byacc in perly.c
413 yygindex=vars # generated by byacc in perly.c
414 yylen=vars # generated by byacc in perly.c
415 yylhs=vars # generated by byacc in perly.c
416 yylval=vars # generated by byacc in perly.c
417 yyname=vars # generated by byacc in perly.c
418 yynerrs=vars # generated by byacc in perly.c
419 yyrindex=vars # generated by byacc in perly.c
420 yyrule=vars # generated by byacc in perly.c
421 yysindex=vars # generated by byacc in perly.c
422 yytable=vars # generated by byacc in perly.c
423 yyval=vars # generated by byacc in perly.c