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@newman.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 if (-f 'perl.h') { $dir = '[]'; }
68 elsif (-f '[-]perl.h') { $dir = '[-]'; }
69 else { die "$0: Can't find perl.h\n"; }
71 # Go see if debugging is enabled in config.h
72 $config = $dir . "config.h";
73 open CONFIG, "< $config";
75 $debugging_enabled++ if /define\s+DEBUGGING/;
76 $use_mymalloc++ if /define\s+MYMALLOC/;
79 # put quotes back onto defines - they were removed by DCL on the way in
80 if (($prefix,$defines,$suffix) =
81 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
82 $defines =~ s/^\((.*)\)$/$1/;
83 $debugging_enabled ||= $defines =~ /\bDEBUGGING\b/;
84 @defines = split(/,/,$defines);
85 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
88 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
90 # check for gcc - if present, we'll need to use MACRO hack to
91 # define global symbols for shared variables
93 $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
94 or 0; # make debug output nice
95 $isvaxc = (!$isgcc && $isvax &&
96 # Check exit status too, in case message is shut off
97 (`$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/ || $? == 0x38240))
98 or 0; # again, make debug output nice
99 print "\$isgcc: $isgcc\n" if $debug;
100 print "\$isvaxc: $isvaxc\n" if $debug;
101 print "\$debugging_enabled: $debugging_enabled\n" if $debug;
105 ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
106 $isgcc = $cc_cmd =~ /case_hack/i
107 or 0; # for nice debug output
108 $isvaxc = (!$isgcc && $cc_cmd !~ /standard=/i)
109 or 0; # again, for nice debug output
110 $debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
111 print "\$isgcc: \\$isgcc\\\n" if $debug;
112 print "\$isvaxc: \\$isvaxc\\\n" if $debug;
113 print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
114 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
117 $objsuffix = shift @ARGV;
118 print "\$objsuffix: \\$objsuffix\\\n" if $debug;
119 $dbgprefix = shift @ARGV;
120 print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
121 $olbsuffix = shift @ARGV;
122 print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
123 $libperl = "${dbgprefix}libperl$olbsuffix";
124 $extnames = shift @ARGV;
125 print "\$extnames: \\$extnames\\\n" if $debug;
126 $rtlopt = shift @ARGV;
127 print "\$rtlopt: \\$rtlopt\\\n" if $debug;
129 # This part gets tricky. VAXC creates global symbols for each of the
130 # constants in an enum if that enum is ever used as the data type of a
131 # global[dr]ef. We have to detect enums which are used in this way, so we
132 # can set up the constants as universal symbols, since anything which
133 # #includes perl.h will want to resolve these global symbols.
134 # We're using a weak test here - we basically know that the only enums
135 # we need to handle now are the big one in opcode.h, and the
136 # "typedef enum { ... } expectation" in perl.h, so we hard code
137 # appropriate tests below. Since we can't know in general whether a given
138 # enum will be used elsewhere in a globaldef, it's hard to decide a
139 # priori whether its constants need to be treated as global symbols.
143 return unless $isvaxc;
145 return unless /^\s+(OP|X)/; # we only want opcode and expectation enums
146 print "\tchecking for enum constant\n" if $debug > 1;
148 $line =~ s/,?\s*\n?$//;
149 print "\tfiltered to \\$line\\\n" if $debug > 1;
150 if ($line =~ /(\w+)$/) {
151 print "\tconstant name is \\$1\\\n" if $debug > 1;
158 my($const) = $line =~ /^EXTCONST/;
160 print "\tchecking for global variable\n" if $debug > 1;
161 $line =~ s/\s*EXT/EXT/;
162 $line =~ s/INIT\s*\(.*\)//;
165 $line =~ s/\W*;?\s*$//;
166 $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
167 print "\tfiltered to \\$line\\\n" if $debug > 1;
168 if ($line =~ /(\w+)$/) {
169 print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
170 if ($const) { $cvars{$1}++; }
171 else { $vars{$1}++; }
174 my($type) = $line =~ /^\s*EXT\w*\s+(\w+)/;
175 print "\tchecking for use of enum (type is \"$type\")\n" if $debug > 2;
176 if ($type eq 'expectation') {
177 $used_expectation_enum++;
178 print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
180 if ($type eq 'opcode') {
182 print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
190 print "\tchecking for global routine\n" if $debug > 1;
191 if ( $line =~ /(\w+)\s*\(/ ) {
192 print "\troutine name is \\$1\\\n" if $debug > 1;
193 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
194 print "\tskipped\n" if $debug > 1;
200 # Go add some right up front if we need 'em
202 $fcns{'Perl_malloc'}++;
203 $fcns{'Perl_calloc'}++;
204 $fcns{'Perl_realloc'}++;
205 $fcns{'Perl_mfree'}++;
208 $used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
210 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
211 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
214 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
216 %checkh = map { $_,1 } qw( thread bytecode byterun proto );
218 LINE: while (<CPP>) {
219 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
220 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
221 print "vms_proto>> $_" if $debug > 2;
222 if (/^\s*EXT/) { &scan_var($_); }
223 else { &scan_func($_); }
224 last LINE unless defined($_ = <CPP>);
226 print "vmsish.h>> $_" if $debug > 2;
227 if (/^\s*EXT/) { &scan_var($_); }
228 last LINE unless defined($_ = <CPP>);
230 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
231 print "opcode.h>> $_" if $debug > 2;
232 if (/^OP \*\s/) { &scan_func($_); }
233 if (/^\s*EXT/) { &scan_var($_); }
234 if (/^\s+OP_/) { &scan_enum($_); }
235 last LINE unless defined($_ = <CPP>);
237 while (/^typedef enum/ .. /^\s*\}/) {
238 print "global enum>> $_" if $debug > 2;
240 last LINE unless defined($_ = <CPP>);
242 # Check for transition to new header file
243 if (/^# \d+ "(\S+)"/) {
245 # Pull name from library module or header filespec
246 $spec =~ /^(\w+)$/ or $spec =~ /(\w+)\.h/i;
248 $ckfunc = exists $checkh{$name} ? 1 : 0;
249 $scanname = $name if $ckfunc;
250 print "Header file transition: ckfunc = $ckfunc for $name.h\n" if $debug > 1;
253 print "$scanname>> $_" if $debug > 2;
254 if (/\s*^EXT/) { &scan_var($_); }
255 else { &scan_func($_); }
258 print $_ if $debug > 3 && ($debug > 5 || length($_));
259 if (/^\s*EXT/) { &scan_var($_); }
268 ($key,$array) = split('=',$_);
269 if ($array eq 'vars') { $key = "PL_$key"; }
270 else { $key = "Perl_$key"; }
271 print "Adding $key to \%$array list\n" if $debug > 1;
274 if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
275 foreach (split /\s+/, $extnames) {
277 $pkgname =~ s/::/__/g;
278 $fcns{"boot_$pkgname"}++;
279 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
282 # If we're using VAXC, fold in the names of the constants for enums
283 # we've seen as the type of global vars.
285 foreach (keys %enums) {
287 $vars{$_}++ if $used_opcode_enum;
291 $vars{$_}++ if $used_expectation_enum;
294 print STDERR "Unrecognized enum constant \"$_\" ignored\n";
298 # Eventually, we'll check against existing copies here, so we can add new
299 # symbols to an existing options file in an upwardly-compatible manner.
302 open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
303 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
305 open(MAR,">${dir}perlshr_gbl${marord}.mar")
306 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
307 print MAR "\t.title perlshr_gbl$marord\n";
310 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
311 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
313 foreach $var (sort (keys %vars,keys %cvars)) {
314 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
315 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
316 # This hack brought to you by the lack of a globaldef in gcc.
318 if ($count++ > 200) { # max 254 psects/file
319 print MAR "\t.end\n";
322 open(MAR,">${dir}perlshr_gbl${marord}.mar")
323 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
324 print MAR "\t.title perlshr_gbl$marord\n";
327 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
328 print MAR "\t${var}:: .blkl 1\n";
332 print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
333 foreach $func (sort keys %fcns) {
335 print MAR "\t.transfer $func\n";
336 print MAR "\t.mask $func\n";
337 print MAR "\tjmp G\^${func}+2\n";
339 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
342 print MAR "\t.end\n";
346 open(OPTATTR,">${dir}perlshr_attr.opt")
347 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
349 print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
352 foreach $var (sort keys %cvars) {
353 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
355 foreach $var (sort keys %vars) {
356 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
360 print OPTATTR "! No additional linker directives are needed when using DECC\n";
364 $incstr = 'perl,globals';
366 $drvrname = "Compile_shrmars.tmp_".time;
367 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
368 print DRVR "\$ Set NoOn\n";
369 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
370 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
371 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
372 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
373 print DRVR "\$ Set Verify\n";
374 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
376 push(@symfiles,"perlshr_gbl$marord");
377 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
378 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
380 # We had to have a working miniperl to run this program; it's probably the
381 # one we just built. It depended on LibPerl, which will be changed when
382 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
383 # and so, therefore, will all of its dependents . . .
384 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
385 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
386 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
387 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
391 # Initial hack to permit building of compatible shareable images for a
392 # given version of Perl.
393 if ($ENV{PERLSHR_USE_GSMATCH}) {
394 my $major = int($] * 1000) & 0xFF; # range 0..255
395 my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
396 print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
397 print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
398 map(",$_$objsuffix",@symfiles), "\n";
400 elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
401 # Include object modules and RTLs in options file
402 # Linker wants /Include and /Library on different lines
403 print OPTBLD "$libperl/Include=($incstr)\n";
404 print OPTBLD "$libperl/Library\n";
405 open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
406 while (<RTLOPT>) { print OPTBLD; }
410 exec "\$ \@$drvrname" if $isvax;
415 # Oddball cases, so we can keep the perl.h scan above simple
416 regkind=vars # declared in regcomp.h
417 simple=vars # declared in regcomp.h
418 varies=vars # declared in regcomp.h