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
95 $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
96 or 0; # make debug output nice
97 print "\$isgcc: $isgcc\n" if $debug;
98 print "\$debugging_enabled: $debugging_enabled\n" if $debug;
102 ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
103 $isgcc = $cc_cmd =~ /case_hack/i
104 or 0; # for nice debug output
105 $debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
106 print "\$isgcc: \\$isgcc\\\n" if $debug;
107 print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
108 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
111 $objsuffix = shift @ARGV;
112 print "\$objsuffix: \\$objsuffix\\\n" if $debug;
113 $dbgprefix = shift @ARGV;
114 print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
115 $olbsuffix = shift @ARGV;
116 print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
117 $libperl = "${dbgprefix}libperl$olbsuffix";
118 $extnames = shift @ARGV;
119 print "\$extnames: \\$extnames\\\n" if $debug;
120 $rtlopt = shift @ARGV;
121 print "\$rtlopt: \\$rtlopt\\\n" if $debug;
125 my($const) = $line =~ /^EXTCONST/;
127 print "\tchecking for global variable\n" if $debug > 1;
128 $line =~ s/\s*EXT/EXT/;
129 $line =~ s/INIT\s*\(.*\)//;
132 $line =~ s/\W*;?\s*$//;
133 $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
134 print "\tfiltered to \\$line\\\n" if $debug > 1;
135 if ($line =~ /(\w+)$/) {
136 print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
137 if ($const) { $cvars{$1}++; }
138 else { $vars{$1}++; }
145 print "\tchecking for global routine\n" if $debug > 1;
146 if ( $line =~ /(\w+)\s*\(/ ) {
147 print "\troutine name is \\$1\\\n" if $debug > 1;
148 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
149 print "\tskipped\n" if $debug > 1;
155 # Go add some right up front if we need 'em
157 $fcns{'Perl_malloc'}++;
158 $fcns{'Perl_calloc'}++;
159 $fcns{'Perl_realloc'}++;
160 $fcns{'Perl_mfree'}++;
163 $used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
165 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
166 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
169 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
171 %checkh = map { $_,1 } qw( thread bytecode byterun proto );
173 LINE: while (<CPP>) {
174 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
175 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
176 print "vms_proto>> $_" if $debug > 2;
177 if (/^\s*EXT/) { &scan_var($_); }
178 else { &scan_func($_); }
179 last LINE unless defined($_ = <CPP>);
181 print "vmsish.h>> $_" if $debug > 2;
182 if (/^\s*EXT/) { &scan_var($_); }
183 last LINE unless defined($_ = <CPP>);
185 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
186 print "opcode.h>> $_" if $debug > 2;
187 if (/^OP \*\s/) { &scan_func($_); }
188 if (/^\s*EXT/) { &scan_var($_); }
189 last LINE unless defined($_ = <CPP>);
191 # Check for transition to new header file
192 if (/^# \d+ "(\S+)"/) {
194 # Pull name from library module or header filespec
195 $spec =~ /^(\w+)$/ or $spec =~ /(\w+)\.h/i;
197 $ckfunc = exists $checkh{$name} ? 1 : 0;
198 $scanname = $name if $ckfunc;
199 print "Header file transition: ckfunc = $ckfunc for $name.h\n" if $debug > 1;
202 print "$scanname>> $_" if $debug > 2;
203 if (/\s*^EXT/) { &scan_var($_); }
204 else { &scan_func($_); }
207 print $_ if $debug > 3 && ($debug > 5 || length($_));
208 if (/^\s*EXT/) { &scan_var($_); }
217 ($key,$array) = split('=',$_);
218 if ($array eq 'vars') { $key = "PL_$key"; }
219 else { $key = "Perl_$key"; }
220 print "Adding $key to \%$array list\n" if $debug > 1;
223 if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
224 foreach (split /\s+/, $extnames) {
226 $pkgname =~ s/::/__/g;
227 $fcns{"boot_$pkgname"}++;
228 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
231 # Eventually, we'll check against existing copies here, so we can add new
232 # symbols to an existing options file in an upwardly-compatible manner.
235 open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
236 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
238 open(MAR,">${dir}perlshr_gbl${marord}.mar")
239 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
240 print MAR "\t.title perlshr_gbl$marord\n";
244 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
245 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
247 print OPTBLD "case_sensitive=yes\n" if $care_about_case;
248 foreach $var (sort (keys %vars,keys %cvars)) {
249 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
250 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
251 # This hack brought to you by the lack of a globaldef in gcc.
253 if ($count++ > 200) { # max 254 psects/file
254 print MAR "\t.end\n";
257 open(MAR,">${dir}perlshr_gbl${marord}.mar")
258 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
259 print MAR "\t.title perlshr_gbl$marord\n";
262 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
263 print MAR "\t${var}:: .blkl 1\n";
267 print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
268 foreach $func (sort keys %fcns) {
270 print MAR "\t.transfer $func\n";
271 print MAR "\t.mask $func\n";
272 print MAR "\tjmp G\^${func}+2\n";
274 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
277 print MAR "\t.end\n";
281 open(OPTATTR,">${dir}perlshr_attr.opt")
282 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
284 foreach $var (sort keys %cvars) {
285 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
287 foreach $var (sort keys %vars) {
288 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
292 print OPTATTR "! No additional linker directives are needed when using DECC\n";
296 $incstr = 'PERL,GLOBALS';
298 $drvrname = "Compile_shrmars.tmp_".time;
299 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
300 print DRVR "\$ Set NoOn\n";
301 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
302 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
303 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
304 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
305 print DRVR "\$ Set Verify\n";
306 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
308 push(@symfiles,"perlshr_gbl$marord");
309 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
310 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
312 # We had to have a working miniperl to run this program; it's probably the
313 # one we just built. It depended on LibPerl, which will be changed when
314 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
315 # and so, therefore, will all of its dependents . . .
316 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
317 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
318 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
319 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
323 # Initial hack to permit building of compatible shareable images for a
324 # given version of Perl.
325 if ($ENV{PERLSHR_USE_GSMATCH}) {
326 if ($ENV{PERLSHR_USE_GSMATCH} eq 'INCLUDE_COMPILE_OPTIONS') {
327 # Build up a major ID. Since it can only be 8 bits, we encode the version
328 # number in the top four bits and use the bottom four for build options
329 # that'll cause incompatibilities
330 ($ver, $sub) = $] =~ /\.(\d\d\d)(\d\d)/;
331 $ver += 0; $sub += 0;
332 $gsmatch = ($sub >= 50) ? "equal" : "lequal"; # Force an equal match for
333 # dev, but be more forgiving
337 $ver += 8 if $debugging_enabled; # If DEBUGGING is set
338 $ver += 4 if $use_threads; # if we're threaded
339 $ver += 2 if $use_mymalloc; # if we're using perl's malloc
340 print OPTBLD "GSMATCH=$gsmatch,$ver,$sub\n";
343 my $major = int($] * 1000) & 0xFF; # range 0..255
344 my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
345 print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
347 print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
348 map(",$_$objsuffix",@symfiles), "\n";
350 elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
351 # Include object modules and RTLs in options file
352 # Linker wants /Include and /Library on different lines
353 print OPTBLD "$libperl/Include=($incstr)\n";
354 print OPTBLD "$libperl/Library\n";
355 open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
356 while (<RTLOPT>) { print OPTBLD; }
360 exec "\$ \@$drvrname" if $isvax;
365 # Oddball cases, so we can keep the perl.h scan above simple
366 regkind=vars # declared in regcomp.h
367 simple=vars # declared in regcomp.h
368 varies=vars # declared in regcomp.h