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 specifies 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
41 my $debug = $ENV{'GEN_SHRFLS_DEBUG'};
43 print "gen_shrfls.pl Rev. 30-Sep-2010\n" if $debug;
45 if ($ARGV[0] eq '-f') {
46 open(INP,$ARGV[1]) or die "Can't read input file $ARGV[1]: $!\n";
47 print "Input taken from file $ARGV[1]\n" if $debug;
51 push(@ARGV,split(/\|/,$_));
54 print "Read input data | ",join(' | ',@ARGV)," |\n" if $debug > 1;
57 my $cc_cmd = shift @ARGV;
60 # Someday, we'll have $GetSyI built into perl . . .
61 my $isvax = `\$ Write Sys\$Output \(F\$GetSyI(\"HW_MODEL\") .LE. 1024 .AND. F\$GetSyI(\"HW_MODEL\") .GT. 0\)`;
63 print "\$isvax: \\$isvax\\\n" if $debug;
65 my $isi64 = `\$ Write Sys\$Output \(F\$GetSyI(\"HW_MODEL\") .GE. 4096)`;
67 print "\$isi64: \\$isi64\\\n" if $debug;
69 print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
70 my $docc = ($cc_cmd !~ /^~~/);
71 print "\$docc = $docc\n" if $debug;
73 my ( $use_threads, $use_mymalloc, $care_about_case, $shorten_symbols,
74 $debugging_enabled, $hide_mymalloc, $isgcc, $use_perlio, $dir )
75 = ( 0, 0, 0, 0, 0, 0, 0, 0 );
78 if (-f 'perl.h') { $dir = '[]'; }
79 elsif (-f '[-]perl.h') { $dir = '[-]'; }
80 else { die "$0: Can't find perl.h\n"; }
82 # Go see what is enabled in config.sh
83 my $config = $dir . "config.sh";
84 open CONFIG, '<', $config;
86 $use_threads++ if /usethreads='(define|yes|true|t|y|1)'/i;
87 $use_mymalloc++ if /usemymalloc='(define|yes|true|t|y|1)'/i;
88 $care_about_case++ if /d_vms_case_sensitive_symbols='(define|yes|true|t|y|1)'/i;
89 $shorten_symbols++ if /d_vms_shorten_long_symbols='(define|yes|true|t|y|1)'/i;
90 $debugging_enabled++ if /usedebugging_perl='(define|yes|true|t|y|1)'/i;
91 $hide_mymalloc++ if /embedmymalloc='(define|yes|true|t|y|1)'/i;
92 $isgcc++ if /gccversion='[^']/;
93 $use_perlio++ if /useperlio='(define|yes|true|t|y|1)'/i;
97 # put quotes back onto defines - they were removed by DCL on the way in
98 if (my ($prefix,$defines,$suffix) =
99 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
100 $defines =~ s/^\((.*)\)$/$1/;
101 $debugging_enabled ||= $defines =~ /\bDEBUGGING\b/;
102 my @defines = split(/,/,$defines);
103 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
106 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
108 # check for gcc - if present, we'll need to use MACRO hack to
109 # define global symbols for shared variables
111 print "\$isgcc: $isgcc\n" if $debug;
112 print "\$debugging_enabled: $debugging_enabled\n" if $debug;
116 (undef,undef,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
117 $isgcc = $cc_cmd =~ /case_hack/i
118 or 0; # for nice debug output
119 $debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
120 print "\$isgcc: \\$isgcc\\\n" if $debug;
121 print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
122 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
125 my $objsuffix = shift @ARGV;
126 print "\$objsuffix: \\$objsuffix\\\n" if $debug;
127 my $dbgprefix = shift @ARGV;
128 print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
129 my $olbsuffix = shift @ARGV;
130 print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
131 my $libperl = "${dbgprefix}libperl$olbsuffix";
132 my $extnames = shift @ARGV;
133 print "\$extnames: \\$extnames\\\n" if $debug;
134 my $rtlopt = shift @ARGV;
135 print "\$rtlopt: \\$rtlopt\\\n" if $debug;
137 my (%vars, %cvars, %fcns);
139 # These are symbols that we should not export. They may merely
140 # look like exportable symbols but aren't, or they may be declared
141 # as exportable symbols but there is no function implementing them
142 # (possibly due to an alias).
144 my %symbols_to_exclude = (
145 '__attribute__format__' => 1,
147 'Perl_pp_avalues' => 1,
148 'Perl_pp_reach' => 1,
149 'Perl_pp_rvalues' => 1,
151 'Perl_pp_transr' => 1,
157 my($const) = $line =~ /^EXTCONST/;
159 print "\tchecking for global variable\n" if $debug > 1;
160 $line =~ s/\s*EXT/EXT/;
161 $line =~ s/INIT\s*\(.*\)//;
164 $line =~ s/\W*;?\s*$//;
165 $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
166 print "\tfiltered to \\$line\\\n" if $debug > 1;
167 if ($line =~ /(\w+)$/) {
168 print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
169 if ($const) { $cvars{$1}++; }
170 else { $vars{$1}++; }
175 my @lines = split /;/, $_[0];
177 for my $line (@lines) {
178 print "\tchecking for global routine\n" if $debug > 1;
179 $line =~ s/\b(IV|Off_t|Size_t|SSize_t|void|int)\b//i;
180 if ( $line =~ /(\w+)\s*\(/ ) {
181 print "\troutine name is \\$1\\\n" if $debug > 1;
182 if (exists($symbols_to_exclude{$1})
183 || ($1 eq 'Perl_stashpv_hvname_match' && ! $use_threads)) {
184 print "\tskipped\n" if $debug > 1;
191 # Go add some right up front if we need 'em
193 $fcns{'Perl_malloc'}++;
194 $fcns{'Perl_calloc'}++;
195 $fcns{'Perl_realloc'}++;
196 $fcns{'Perl_mfree'}++;
199 my ($used_expectation_enum, $used_opcode_enum) = (0, 0); # avoid warnings
201 1 while unlink 'perlincludes.tmp';
202 END { 1 while unlink 'perlincludes.tmp'; } # and clean up after
204 open(PERLINC, '>', 'perlincludes.tmp') or die "Couldn't open 'perlincludes.tmp' $!";
206 print PERLINC qq/#include "${dir}perl.h"\n/;
207 print PERLINC qq/#include "${dir}perlapi.h"\n/;
208 print PERLINC qq/#include "${dir}perliol.h"\n/ if $use_perlio;
209 print PERLINC qq/#include "${dir}regcomp.h"\n/;
212 my $preprocess_list = 'perlincludes.tmp';
214 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output $preprocess_list|")
215 or die "$0: Can't preprocess $preprocess_list: $!\n";
218 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
220 my %checkh = map { $_,1 } qw( bytecode byterun intrpvar perlapi perlio perliol
221 perlvars proto regcomp thrdvar thread );
223 LINE: while (<CPP>) {
224 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
225 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
226 print "vms_proto>> $_" if $debug > 2;
227 if (/^\s*EXT(CONST|\s+)/) { &scan_var($_); }
228 else { &scan_func($_); }
229 last LINE unless defined($_ = <CPP>);
231 print "vmsish.h>> $_" if $debug > 2;
232 if (/^\s*EXT(CONST|\s+)/) { &scan_var($_); }
233 last LINE unless defined($_ = <CPP>);
235 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
236 print "opcode.h>> $_" if $debug > 2;
237 if (/^OP \*\s/) { &scan_func($_); }
238 if (/^\s*EXT(CONST|\s+)/) { &scan_var($_); }
239 last LINE unless defined($_ = <CPP>);
241 # 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 $debug > 2;
254 if (/^\s*EXT(CONST|\s+)/) { &scan_var($_); }
255 else { &scan_func($_); }
258 print $_ if $debug > 3 && ($debug > 5 || length($_));
259 if (/^\s*EXT(CONST|\s+)/) { &scan_var($_); }
268 my ($key,$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 $debug;
282 # For symbols over 31 characters, export the shortened name.
283 # TODO: Make this general purpose so we can predict the shortened name the
284 # compiler will generate for any symbol over 31 characters in length. The
285 # docs to CC/NAMES=SHORTENED describe the CRC used to shorten the name, but
286 # don't describe its use fully enough to actually mimic what the compiler
289 if ($shorten_symbols) {
290 if (exists $fcns{'Perl_ck_entersub_args_proto_or_list'}) {
291 delete $fcns{'Perl_ck_entersub_args_proto_or_list'};
292 if ($care_about_case) {
293 $fcns{'Perl_ck_entersub_args_p11c2bjj$'}++;
296 $fcns{'PERL_CK_ENTERSUB_ARGS_P3IAT616$'}++;
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";
315 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,NOEXE,RD,NOWRT,SHR\n";
316 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,NOEXE,RD,WRT,NOSHR\n";
319 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
320 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
323 print OPTBLD "case_sensitive=yes\n" if $care_about_case;
325 foreach my $var (sort (keys %vars,keys %cvars)) {
326 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
327 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
328 # This hack brought to you by the lack of a globaldef in gcc.
330 if ($count++ > 200) { # max 254 psects/file
331 print MAR "\t.end\n";
334 open(MAR, '>', "${dir}perlshr_gbl${marord}.mar")
335 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
336 print MAR "\t.title perlshr_gbl$marord\n";
339 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
340 print MAR "\t${var}:: .blkl 1\n";
344 print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
345 foreach my $func (sort keys %fcns) {
347 print MAR "\t.transfer $func\n";
348 print MAR "\t.mask $func\n";
349 print MAR "\tjmp G\^${func}+2\n";
351 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
354 print MAR "\t.end\n";
358 open(OPTATTR, '>', "${dir}perlshr_attr.opt")
359 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
361 foreach my $var (sort keys %cvars) {
362 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
364 foreach my $var (sort keys %vars) {
365 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
369 print OPTATTR "! No additional linker directives are needed when using DECC\n";
373 my $incstr = 'PERL,GLOBALS';
374 my (@symfiles, $drvrname);
376 $drvrname = "Compile_shrmars.tmp_".time;
377 open (DRVR,'>', $drvrname) or die "$0: Can't write to $drvrname: $!\n";
378 print DRVR "\$ Set NoOn\n";
379 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
380 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
381 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
382 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
383 print DRVR "\$ Set Verify\n";
384 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
386 push(@symfiles,"perlshr_gbl$marord");
387 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
388 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
390 # We had to have a working miniperl to run this program; it's probably the
391 # one we just built. It depended on LibPerl, which will be changed when
392 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
393 # and so, therefore, will all of its dependents . . .
394 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
395 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
396 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
397 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
401 # Initial hack to permit building of compatible shareable images for a
402 # given version of Perl.
403 if ($ENV{PERLSHR_USE_GSMATCH}) {
404 if ($ENV{PERLSHR_USE_GSMATCH} eq 'INCLUDE_COMPILE_OPTIONS') {
405 # Build up a major ID. Since it can only be 8 bits, we encode the version
406 # number in the top four bits and use the bottom four for build options
407 # that'll cause incompatibilities
408 my ($ver, $sub) = $] =~ /\.(\d\d\d)(\d\d)/;
409 $ver += 0; $sub += 0;
410 my $gsmatch = ($sub >= 50) ? "equal" : "lequal"; # Force an equal match for
411 # dev, but be more forgiving
415 $ver += 8 if $debugging_enabled; # If DEBUGGING is set
416 $ver += 4 if $use_threads; # if we're threaded
417 $ver += 2 if $use_mymalloc; # if we're using perl's malloc
418 print OPTBLD "GSMATCH=$gsmatch,$ver,$sub\n";
421 my $major = int($] * 1000) & 0xFF; # range 0..255
422 my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
423 print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
425 print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
426 map(",$_$objsuffix",@symfiles), "\n";
428 elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
429 # Include object modules and RTLs in options file
430 # Linker wants /Include and /Library on different lines
431 print OPTBLD "$libperl/Include=($incstr)\n";
432 print OPTBLD "$libperl/Library\n";
433 open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
434 while (<RTLOPT>) { print OPTBLD; }
438 exec "\$ \@$drvrname" if $isvax;
443 # Oddball cases, so we can keep the perl.h scan above simple
444 #Foo=vars # uncommented becomes PL_Foo
445 #Bar=funcs # uncommented becomes Perl_Bar