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/;
77 $hide_mymalloc++ if /define\s+EMBEDMYMALLOC/;
78 $use_threads++ if /define\s+USE_THREADS/;
79 $care_about_case++ if /define\s+VMS_WE_ARE_CASE_SENSITIVE/;
82 # put quotes back onto defines - they were removed by DCL on the way in
83 if (($prefix,$defines,$suffix) =
84 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
85 $defines =~ s/^\((.*)\)$/$1/;
86 $debugging_enabled ||= $defines =~ /\bDEBUGGING\b/;
87 @defines = split(/,/,$defines);
88 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
91 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
93 # check for gcc - if present, we'll need to use MACRO hack to
94 # define global symbols for shared variables
96 $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
97 or 0; # make debug output nice
98 $isvaxc = (!$isgcc && $isvax &&
99 # Check exit status too, in case message is shut off
100 (`$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/ || $? == 0x38240))
101 or 0; # again, make debug output nice
102 print "\$isgcc: $isgcc\n" if $debug;
103 print "\$isvaxc: $isvaxc\n" if $debug;
104 print "\$debugging_enabled: $debugging_enabled\n" if $debug;
108 ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
109 $isgcc = $cc_cmd =~ /case_hack/i
110 or 0; # for nice debug output
111 $isvaxc = (!$isgcc && $cc_cmd !~ /standard=/i)
112 or 0; # again, for nice debug output
113 $debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
114 print "\$isgcc: \\$isgcc\\\n" if $debug;
115 print "\$isvaxc: \\$isvaxc\\\n" if $debug;
116 print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
117 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
120 $objsuffix = shift @ARGV;
121 print "\$objsuffix: \\$objsuffix\\\n" if $debug;
122 $dbgprefix = shift @ARGV;
123 print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
124 $olbsuffix = shift @ARGV;
125 print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
126 $libperl = "${dbgprefix}libperl$olbsuffix";
127 $extnames = shift @ARGV;
128 print "\$extnames: \\$extnames\\\n" if $debug;
129 $rtlopt = shift @ARGV;
130 print "\$rtlopt: \\$rtlopt\\\n" if $debug;
132 # This part gets tricky. VAXC creates global symbols for each of the
133 # constants in an enum if that enum is ever used as the data type of a
134 # global[dr]ef. We have to detect enums which are used in this way, so we
135 # can set up the constants as universal symbols, since anything which
136 # #includes perl.h will want to resolve these global symbols.
137 # We're using a weak test here - we basically know that the only enums
138 # we need to handle now are the big one in opcode.h, and the
139 # "typedef enum { ... } expectation" in perl.h, so we hard code
140 # appropriate tests below. Since we can't know in general whether a given
141 # enum will be used elsewhere in a globaldef, it's hard to decide a
142 # priori whether its constants need to be treated as global symbols.
146 return unless $isvaxc;
148 return unless /^\s+(OP|X)/; # we only want opcode and expectation enums
149 print "\tchecking for enum constant\n" if $debug > 1;
151 $line =~ s/,?\s*\n?$//;
152 print "\tfiltered to \\$line\\\n" if $debug > 1;
153 if ($line =~ /(\w+)$/) {
154 print "\tconstant name is \\$1\\\n" if $debug > 1;
161 my($const) = $line =~ /^EXTCONST/;
163 print "\tchecking for global variable\n" if $debug > 1;
164 $line =~ s/\s*EXT/EXT/;
165 $line =~ s/INIT\s*\(.*\)//;
168 $line =~ s/\W*;?\s*$//;
169 $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
170 print "\tfiltered to \\$line\\\n" if $debug > 1;
171 if ($line =~ /(\w+)$/) {
172 print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
173 if ($const) { $cvars{$1}++; }
174 else { $vars{$1}++; }
177 my($type) = $line =~ /^\s*EXT\w*\s+(\w+)/;
178 print "\tchecking for use of enum (type is \"$type\")\n" if $debug > 2;
179 if ($type eq 'expectation') {
180 $used_expectation_enum++;
181 print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
183 if ($type eq 'opcode') {
185 print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
193 print "\tchecking for global routine\n" if $debug > 1;
194 if ( $line =~ /(\w+)\s*\(/ ) {
195 print "\troutine name is \\$1\\\n" if $debug > 1;
196 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
197 print "\tskipped\n" if $debug > 1;
203 # Go add some right up front if we need 'em
205 $fcns{'Perl_malloc'}++;
206 $fcns{'Perl_calloc'}++;
207 $fcns{'Perl_realloc'}++;
208 $fcns{'Perl_mfree'}++;
211 $used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
213 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
214 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
217 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
219 %checkh = map { $_,1 } qw( thread bytecode byterun proto );
221 LINE: while (<CPP>) {
222 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
223 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
224 print "vms_proto>> $_" if $debug > 2;
225 if (/^\s*EXT/) { &scan_var($_); }
226 else { &scan_func($_); }
227 last LINE unless defined($_ = <CPP>);
229 print "vmsish.h>> $_" if $debug > 2;
230 if (/^\s*EXT/) { &scan_var($_); }
231 last LINE unless defined($_ = <CPP>);
233 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
234 print "opcode.h>> $_" if $debug > 2;
235 if (/^OP \*\s/) { &scan_func($_); }
236 if (/^\s*EXT/) { &scan_var($_); }
237 if (/^\s+OP_/) { &scan_enum($_); }
238 last LINE unless defined($_ = <CPP>);
240 while (/^typedef enum/ .. /^\s*\}/) {
241 print "global enum>> $_" if $debug > 2;
243 last LINE unless defined($_ = <CPP>);
245 # Check for transition to new header file
246 if (/^# \d+ "(\S+)"/) {
248 # Pull name from library module or header filespec
249 $spec =~ /^(\w+)$/ or $spec =~ /(\w+)\.h/i;
251 $ckfunc = exists $checkh{$name} ? 1 : 0;
252 $scanname = $name if $ckfunc;
253 print "Header file transition: ckfunc = $ckfunc for $name.h\n" if $debug > 1;
256 print "$scanname>> $_" if $debug > 2;
257 if (/\s*^EXT/) { &scan_var($_); }
258 else { &scan_func($_); }
261 print $_ if $debug > 3 && ($debug > 5 || length($_));
262 if (/^\s*EXT/) { &scan_var($_); }
271 ($key,$array) = split('=',$_);
272 if ($array eq 'vars') { $key = "PL_$key"; }
273 else { $key = "Perl_$key"; }
274 print "Adding $key to \%$array list\n" if $debug > 1;
277 if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
278 foreach (split /\s+/, $extnames) {
280 $pkgname =~ s/::/__/g;
281 $fcns{"boot_$pkgname"}++;
282 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
285 # If we're using VAXC, fold in the names of the constants for enums
286 # we've seen as the type of global vars.
288 foreach (keys %enums) {
290 $vars{$_}++ if $used_opcode_enum;
294 $vars{$_}++ if $used_expectation_enum;
297 print STDERR "Unrecognized enum constant \"$_\" ignored\n";
301 # Eventually, we'll check against existing copies here, so we can add new
302 # symbols to an existing options file in an upwardly-compatible manner.
305 open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
306 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
308 open(MAR,">${dir}perlshr_gbl${marord}.mar")
309 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
310 print MAR "\t.title perlshr_gbl$marord\n";
314 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
315 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
317 print OPTBLD "case_sensitive=yes\n" if $care_about_case;
318 foreach $var (sort (keys %vars,keys %cvars)) {
319 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
320 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
321 # This hack brought to you by the lack of a globaldef in gcc.
323 if ($count++ > 200) { # max 254 psects/file
324 print MAR "\t.end\n";
327 open(MAR,">${dir}perlshr_gbl${marord}.mar")
328 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
329 print MAR "\t.title perlshr_gbl$marord\n";
332 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
333 print MAR "\t${var}:: .blkl 1\n";
337 print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
338 foreach $func (sort keys %fcns) {
340 print MAR "\t.transfer $func\n";
341 print MAR "\t.mask $func\n";
342 print MAR "\tjmp G\^${func}+2\n";
344 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
347 print MAR "\t.end\n";
351 open(OPTATTR,">${dir}perlshr_attr.opt")
352 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
354 print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
357 foreach $var (sort keys %cvars) {
358 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
360 foreach $var (sort keys %vars) {
361 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
365 print OPTATTR "! No additional linker directives are needed when using DECC\n";
369 $incstr = 'PERL,GLOBALS';
371 $drvrname = "Compile_shrmars.tmp_".time;
372 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
373 print DRVR "\$ Set NoOn\n";
374 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
375 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
376 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
377 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
378 print DRVR "\$ Set Verify\n";
379 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
381 push(@symfiles,"perlshr_gbl$marord");
382 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
383 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
385 # We had to have a working miniperl to run this program; it's probably the
386 # one we just built. It depended on LibPerl, which will be changed when
387 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
388 # and so, therefore, will all of its dependents . . .
389 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
390 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
391 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
392 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
396 # Initial hack to permit building of compatible shareable images for a
397 # given version of Perl.
398 if ($ENV{PERLSHR_USE_GSMATCH}) {
399 if ($ENV{PERLSHR_USE_GSMATCH} eq 'INCLUDE_COMPILE_OPTIONS') {
400 # Build up a major ID. Since it can only be 8 bits, we encode the version
401 # number in the top four bits and use the bottom four for build options
402 # that'll cause incompatibilities
403 ($ver, $sub) = $] =~ /\.(\d\d\d)(\d\d)/;
404 $gsmatch = ($sub >= 50) ? "equal" : "lequal"; # Force an equal match for
405 # dev, but be more forgiving
409 $ver += 8 if $debugging_enabled; # If DEBUGGING is set
410 $ver += 4 if $use_threads; # if we're threaded
411 $ver += 2 if $use_mymalloc; # if we're using perl's malloc
412 print OPTBLD "GSMATCH=$gsmatch,$ver,$sub\n";
415 my $major = int($] * 1000) & 0xFF; # range 0..255
416 my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
417 print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
419 print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
420 map(",$_$objsuffix",@symfiles), "\n";
422 elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
423 # Include object modules and RTLs in options file
424 # Linker wants /Include and /Library on different lines
425 print OPTBLD "$libperl/Include=($incstr)\n";
426 print OPTBLD "$libperl/Library\n";
427 open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
428 while (<RTLOPT>) { print OPTBLD; }
432 exec "\$ \@$drvrname" if $isvax;
437 # Oddball cases, so we can keep the perl.h scan above simple
438 regkind=vars # declared in regcomp.h
439 simple=vars # declared in regcomp.h
440 varies=vars # declared in regcomp.h