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[perl5.git] / vms / gen_shrfls.pl
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1# Create global symbol declarations, transfer vector, and
2# linker options files for PerlShr.
3#
4# Input:
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.
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9# $libperl - Perl object library.
10# $extnames - package names for static extensions (used to generate
11# linker options file entries for boot functions)
12# $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
13# must be linked
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14#
15# Output:
16# PerlShr_Attr.Opt - linker options file which speficies that global vars
17# be placed in NOSHR,WRT psects. Use when linking any object files
18# against PerlShr.Exe, since cc places global vars in SHR,WRT psects
19# by default.
748a9306 20# PerlShr_Bld.Opt - declares universal symbols for PerlShr.Exe
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21# Perlshr_Gbl*.Mar, Perlshr_Gbl*.Obj (VAX only) - declares global symbols
22# for global vars (done here because gcc can't globaldef) and creates
23# transfer vectors for routines on a VAX.
24# PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
25# to the linker when building PerlShr.Exe.
26#
27# To do:
28# - figure out a good way to collect global vars in one psect, given that
29# we can't use globaldef because of gcc.
30# - then, check for existing files and preserve symbol and transfer vector
31# order for upward compatibility
32# - then, add GSMATCH to options file - but how do we insure that new
33# library has everything old one did
34# (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
35#
bd3fa61c 36# Author: Charles Bailey bailey@newman.upenn.edu
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37
38require 5.000;
39
40$debug = $ENV{'GEN_SHRFLS_DEBUG'};
a5f75d66 41
fc1ce8cc 42print "gen_shrfls.pl Rev. 14-Dec-1997\n" if $debug;
71be2cbc 43
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44if ($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 $debug;
47 @ARGV = ();
48 while (<INP>) {
49 chomp;
50 push(@ARGV,split(/\|/,$_));
51 }
52 close INP;
53 print "Read input data | ",join(' | ',@ARGV)," |\n" if $debug > 1;
54}
55
a0d0e21e 56$cc_cmd = shift @ARGV;
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57
58# Someday, we'll have $GetSyI built into perl . . .
59$isvax = `\$ Write Sys\$Output F\$GetSyI(\"HW_MODEL\")` <= 1024;
60print "\$isvax: \\$isvax\\\n" if $debug;
61
a0d0e21e 62print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
4633a7c4 63$docc = ($cc_cmd !~ /^~~/);
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64print "\$docc = $docc\n" if $debug;
65
66if ($docc) {
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67 if (-f 'perl.h') { $dir = '[]'; }
68 elsif (-f '[-]perl.h') { $dir = '[-]'; }
69 else { die "$0: Can't find perl.h\n"; }
70
71 # Go see if debugging is enabled in config.h
72 $config = $dir . "config.h";
73 open CONFIG, "< $config";
74 while(<CONFIG>) {
75 $debugging_enabled++ if /define\s+DEBUGGING/;
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76 $use_mymalloc++ if /define\s+MYMALLOC/;
77 }
78
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79 # put quotes back onto defines - they were removed by DCL on the way in
80 if (($prefix,$defines,$suffix) =
81 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
82 $defines =~ s/^\((.*)\)$/$1/;
429a5e67 83 $debugging_enabled ||= $defines =~ /\bDEBUGGING\b/;
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84 @defines = split(/,/,$defines);
85 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
86 . ')' . $suffix;
87 }
88 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
89
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90 # check for gcc - if present, we'll need to use MACRO hack to
91 # define global symbols for shared variables
92 $isvaxc = 0;
93 $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
94 or 0; # make debug output nice
71be2cbc 95 $isvaxc = (!$isgcc && $isvax &&
96 # Check exit status too, in case message is shut off
97 (`$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/ || $? == 0x38240))
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98 or 0; # again, make debug output nice
99 print "\$isgcc: $isgcc\n" if $debug;
100 print "\$isvaxc: $isvaxc\n" if $debug;
09b7f37c 101 print "\$debugging_enabled: $debugging_enabled\n" if $debug;
4633a7c4 102
a0d0e21e 103}
4633a7c4 104else {
a5f75d66 105 ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
482b294c 106 $isgcc = $cc_cmd =~ /case_hack/i
4633a7c4 107 or 0; # for nice debug output
482b294c 108 $isvaxc = (!$isgcc && $cc_cmd !~ /standard=/i)
4633a7c4 109 or 0; # again, for nice debug output
09b7f37c 110 $debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
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111 print "\$isgcc: \\$isgcc\\\n" if $debug;
112 print "\$isvaxc: \\$isvaxc\\\n" if $debug;
09b7f37c 113 print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
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114 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
115}
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116
117$objsuffix = shift @ARGV;
118print "\$objsuffix: \\$objsuffix\\\n" if $debug;
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119$dbgprefix = shift @ARGV;
120print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
121$olbsuffix = shift @ARGV;
122print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
123$libperl = "${dbgprefix}libperl$olbsuffix";
124$extnames = shift @ARGV;
125print "\$extnames: \\$extnames\\\n" if $debug;
126$rtlopt = shift @ARGV;
127print "\$rtlopt: \\$rtlopt\\\n" if $debug;
a0d0e21e 128
e518068a 129# This part gets tricky. VAXC creates global symbols for each of the
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130# constants in an enum if that enum is ever used as the data type of a
131# global[dr]ef. We have to detect enums which are used in this way, so we
132# can set up the constants as universal symbols, since anything which
133# #includes perl.h will want to resolve these global symbols.
134# We're using a weak test here - we basically know that the only enums
135# we need to handle now are the big one in opcode.h, and the
136# "typedef enum { ... } expectation" in perl.h, so we hard code
137# appropriate tests below. Since we can't know in general whether a given
138# enum will be used elsewhere in a globaldef, it's hard to decide a
139# priori whether its constants need to be treated as global symbols.
140sub scan_enum {
141 my($line) = @_;
142
143 return unless $isvaxc;
144
145 return unless /^\s+(OP|X)/; # we only want opcode and expectation enums
146 print "\tchecking for enum constant\n" if $debug > 1;
147 $line =~ s#/\*.+##;
148 $line =~ s/,?\s*\n?$//;
149 print "\tfiltered to \\$line\\\n" if $debug > 1;
150 if ($line =~ /(\w+)$/) {
c07a80fd 151 print "\tconstant name is \\$1\\\n" if $debug > 1;
152 $enums{$1}++;
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153 }
154}
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155
156sub scan_var {
157 my($line) = @_;
71be2cbc 158 my($const) = $line =~ /^EXTCONST/;
a0d0e21e 159
748a9306 160 print "\tchecking for global variable\n" if $debug > 1;
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161 $line =~ s/\s*EXT/EXT/;
162 $line =~ s/INIT\s*\(.*\)//;
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163 $line =~ s/\[.*//;
164 $line =~ s/=.*//;
165 $line =~ s/\W*;?\s*$//;
61bb5906 166 $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
748a9306 167 print "\tfiltered to \\$line\\\n" if $debug > 1;
a0d0e21e 168 if ($line =~ /(\w+)$/) {
71be2cbc 169 print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
170 if ($const) { $cvars{$1}++; }
171 else { $vars{$1}++; }
172 }
173 if ($isvaxc) {
3e3baf6d 174 my($type) = $line =~ /^\s*EXT\w*\s+(\w+)/;
71be2cbc 175 print "\tchecking for use of enum (type is \"$type\")\n" if $debug > 2;
176 if ($type eq 'expectation') {
177 $used_expectation_enum++;
178 print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
179 }
180 if ($type eq 'opcode') {
181 $used_opcode_enum++;
182 print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
183 }
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184 }
185}
186
187sub scan_func {
188 my($line) = @_;
189
748a9306 190 print "\tchecking for global routine\n" if $debug > 1;
7f00e737 191 if ( $line =~ /(\w+)\s*\(/ ) {
748a9306 192 print "\troutine name is \\$1\\\n" if $debug > 1;
a0d0e21e 193 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
748a9306 194 print "\tskipped\n" if $debug > 1;
a0d0e21e 195 }
4633a7c4 196 else { $fcns{$1}++ }
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197 }
198}
199
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200# Go add some right up front if we need 'em
201if ($use_mymalloc) {
202 $fcns{'Perl_malloc'}++;
203 $fcns{'Perl_calloc'}++;
204 $fcns{'Perl_realloc'}++;
f2517201 205 $fcns{'Perl_mfree'}++;
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206}
207
c07a80fd 208$used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
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209if ($docc) {
210 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
211 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
212}
213else {
a5f75d66 214 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
a0d0e21e 215}
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216%checkh = map { $_,1 } qw( thread bytecode byterun proto );
217$ckfunc = 0;
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218LINE: while (<CPP>) {
219 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
220 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
748a9306 221 print "vms_proto>> $_" if $debug > 2;
3e3baf6d 222 if (/^\s*EXT/) { &scan_var($_); }
b9f71c63 223 else { &scan_func($_); }
09b7f37c 224 last LINE unless defined($_ = <CPP>);
a0d0e21e 225 }
748a9306 226 print "vmsish.h>> $_" if $debug > 2;
3e3baf6d 227 if (/^\s*EXT/) { &scan_var($_); }
09b7f37c 228 last LINE unless defined($_ = <CPP>);
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229 }
230 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
748a9306 231 print "opcode.h>> $_" if $debug > 2;
a0d0e21e 232 if (/^OP \*\s/) { &scan_func($_); }
3e3baf6d 233 if (/^\s*EXT/) { &scan_var($_); }
4633a7c4 234 if (/^\s+OP_/) { &scan_enum($_); }
09b7f37c 235 last LINE unless defined($_ = <CPP>);
4633a7c4 236 }
09b7f37c 237 while (/^typedef enum/ .. /^\s*\}/) {
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238 print "global enum>> $_" if $debug > 2;
239 &scan_enum($_);
09b7f37c 240 last LINE unless defined($_ = <CPP>);
a0d0e21e 241 }
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242 # Check for transition to new header file
243 if (/^# \d+ "(\S+)"/) {
244 my $spec = $1;
245 # Pull name from library module or header filespec
246 $spec =~ /^(\w+)$/ or $spec =~ /(\w+)\.h/i;
247 my $name = lc $1;
248 $ckfunc = exists $checkh{$name} ? 1 : 0;
249 $scanname = $name if $ckfunc;
250 print "Header file transition: ckfunc = $ckfunc for $name.h\n" if $debug > 1;
61bb5906 251 }
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252 if ($ckfunc) {
253 print "$scanname>> $_" if $debug > 2;
3e3baf6d 254 if (/\s*^EXT/) { &scan_var($_); }
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255 else { &scan_func($_); }
256 }
257 else {
258 print $_ if $debug > 3 && ($debug > 5 || length($_));
259 if (/^\s*EXT/) { &scan_var($_); }
a0d0e21e 260 }
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261}
262close CPP;
b9f71c63 263
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264while (<DATA>) {
265 next if /^#/;
266 s/\s+#.*\n//;
4633a7c4 267 next if /^\s*$/;
a0d0e21e 268 ($key,$array) = split('=',$_);
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269 if ($array eq 'vars') { $key = "PL_$key"; }
270 else { $key = "Perl_$key"; }
748a9306 271 print "Adding $key to \%$array list\n" if $debug > 1;
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272 ${$array}{$key}++;
273}
9ef4b0a6 274if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
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275foreach (split /\s+/, $extnames) {
276 my($pkgname) = $_;
277 $pkgname =~ s/::/__/g;
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278 $fcns{"boot_$pkgname"}++;
279 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
748a9306 280}
a0d0e21e 281
c07a80fd 282# If we're using VAXC, fold in the names of the constants for enums
283# we've seen as the type of global vars.
284if ($isvaxc) {
285 foreach (keys %enums) {
286 if (/^OP/) {
287 $vars{$_}++ if $used_opcode_enum;
288 next;
289 }
290 if (/^X/) {
291 $vars{$_}++ if $used_expectation_enum;
292 next;
293 }
294 print STDERR "Unrecognized enum constant \"$_\" ignored\n";
295 }
296}
297
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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.
300
301$marord++;
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302open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
303 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
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304if ($isvax) {
305 open(MAR,">${dir}perlshr_gbl${marord}.mar")
306 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306 307 print MAR "\t.title perlshr_gbl$marord\n";
a0d0e21e 308}
71be2cbc 309unless ($isgcc) {
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";
312}
313foreach $var (sort (keys %vars,keys %cvars)) {
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314 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
315 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
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316 # This hack brought to you by the lack of a globaldef in gcc.
317 if ($isgcc) {
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318 if ($count++ > 200) { # max 254 psects/file
319 print MAR "\t.end\n";
320 close MAR;
321 $marord++;
322 open(MAR,">${dir}perlshr_gbl${marord}.mar")
323 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306 324 print MAR "\t.title perlshr_gbl$marord\n";
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325 $count = 0;
326 }
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327 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
328 print MAR "\t${var}:: .blkl 1\n";
329 }
330}
331
332print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
4633a7c4 333foreach $func (sort keys %fcns) {
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334 if ($isvax) {
335 print MAR "\t.transfer $func\n";
336 print MAR "\t.mask $func\n";
4633a7c4 337 print MAR "\tjmp G\^${func}+2\n";
a0d0e21e 338 }
748a9306 339 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
a0d0e21e 340}
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341if ($isvax) {
342 print MAR "\t.end\n";
343 close MAR;
344}
a0d0e21e 345
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346open(OPTATTR,">${dir}perlshr_attr.opt")
347 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
71be2cbc 348if ($isvaxc) {
349 print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
350}
351elsif ($isgcc) {
352 foreach $var (sort keys %cvars) {
353 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
354 }
355 foreach $var (sort keys %vars) {
356 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
357 }
358}
359else {
360 print OPTATTR "! No additional linker directives are needed when using DECC\n";
4633a7c4 361}
a0d0e21e 362close OPTATTR;
4633a7c4 363
748a9306 364$incstr = 'perl,globals';
a0d0e21e 365if ($isvax) {
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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";
748a9306 372 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
a0d0e21e 373 print DRVR "\$ Set Verify\n";
748a9306 374 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
a0d0e21e 375 do {
bbce6d69 376 push(@symfiles,"perlshr_gbl$marord");
a0d0e21e 377 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
748a9306 378 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
a0d0e21e 379 } while (--$marord);
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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].
a0d0e21e 386 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
748a9306 387 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
a0d0e21e 388 close DRVR;
a0d0e21e 389}
748a9306 390
bbce6d69 391# Initial hack to permit building of compatible shareable images for a
392# given version of Perl.
393if ($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";
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397 print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
398 map(",$_$objsuffix",@symfiles), "\n";
bbce6d69 399}
36477c24 400elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
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401# Include object modules and RTLs in options file
402# Linker wants /Include and /Library on different lines
403print OPTBLD "$libperl/Include=($incstr)\n";
404print OPTBLD "$libperl/Library\n";
a5f75d66 405open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
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406while (<RTLOPT>) { print OPTBLD; }
407close RTLOPT;
408close OPTBLD;
409
410exec "\$ \@$drvrname" if $isvax;
411
412
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413__END__
414
415# Oddball cases, so we can keep the perl.h scan above simple
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416regkind=vars # declared in regcomp.h
417simple=vars # declared in regcomp.h
418varies=vars # declared in regcomp.h