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[inseparable changes from changes to perl-5.004_01-mt2]
[perl5.git] / vms / gen_shrfls.pl
CommitLineData
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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# $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
13# must be linked
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14#
15# Output:
16# PerlShr_Attr.Opt - linker options file which speficies that global vars
17# be placed in NOSHR,WRT psects. Use when linking any object files
18# against PerlShr.Exe, since cc places global vars in SHR,WRT psects
19# by default.
748a9306 20# PerlShr_Bld.Opt - declares universal symbols for PerlShr.Exe
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21# Perlshr_Gbl*.Mar, Perlshr_Gbl*.Obj (VAX only) - declares global symbols
22# for global vars (done here because gcc can't globaldef) and creates
23# transfer vectors for routines on a VAX.
24# PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
25# to the linker when building PerlShr.Exe.
26#
27# To do:
28# - figure out a good way to collect global vars in one psect, given that
29# we can't use globaldef because of gcc.
30# - then, check for existing files and preserve symbol and transfer vector
31# order for upward compatibility
32# - then, add GSMATCH to options file - but how do we insure that new
33# library has everything old one did
34# (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
35#
36# Author: Charles Bailey bailey@genetics.upenn.edu
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37
38require 5.000;
39
40$debug = $ENV{'GEN_SHRFLS_DEBUG'};
a5f75d66 41
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42print "gen_shrfls.pl Rev. 14-Dec-1996\n" if $debug;
43
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44if ($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) {
67 # put quotes back onto defines - they were removed by DCL on the way in
68 if (($prefix,$defines,$suffix) =
69 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
70 $defines =~ s/^\((.*)\)$/$1/;
71 @defines = split(/,/,$defines);
72 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
73 . ')' . $suffix;
74 }
75 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
76
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77 # check for gcc - if present, we'll need to use MACRO hack to
78 # define global symbols for shared variables
79 $isvaxc = 0;
80 $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
81 or 0; # make debug output nice
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82 $isvaxc = (!$isgcc && $isvax &&
83 # Check exit status too, in case message is shut off
84 (`$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/ || $? == 0x38240))
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85 or 0; # again, make debug output nice
86 print "\$isgcc: $isgcc\n" if $debug;
87 print "\$isvaxc: $isvaxc\n" if $debug;
88
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89 if (-f 'perl.h') { $dir = '[]'; }
90 elsif (-f '[-]perl.h') { $dir = '[-]'; }
91 else { die "$0: Can't find perl.h\n"; }
92}
4633a7c4 93else {
a5f75d66 94 ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
482b294c 95 $isgcc = $cc_cmd =~ /case_hack/i
4633a7c4 96 or 0; # for nice debug output
482b294c 97 $isvaxc = (!$isgcc && $cc_cmd !~ /standard=/i)
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98 or 0; # again, for nice debug output
99 print "\$isgcc: \\$isgcc\\\n" if $debug;
100 print "\$isvaxc: \\$isvaxc\\\n" if $debug;
101 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
102}
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103
104$objsuffix = shift @ARGV;
105print "\$objsuffix: \\$objsuffix\\\n" if $debug;
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106$dbgprefix = shift @ARGV;
107print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
108$olbsuffix = shift @ARGV;
109print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
110$libperl = "${dbgprefix}libperl$olbsuffix";
111$extnames = shift @ARGV;
112print "\$extnames: \\$extnames\\\n" if $debug;
113$rtlopt = shift @ARGV;
114print "\$rtlopt: \\$rtlopt\\\n" if $debug;
a0d0e21e 115
e518068a 116# This part gets tricky. VAXC creates global symbols for each of the
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117# constants in an enum if that enum is ever used as the data type of a
118# global[dr]ef. We have to detect enums which are used in this way, so we
119# can set up the constants as universal symbols, since anything which
120# #includes perl.h will want to resolve these global symbols.
121# We're using a weak test here - we basically know that the only enums
122# we need to handle now are the big one in opcode.h, and the
123# "typedef enum { ... } expectation" in perl.h, so we hard code
124# appropriate tests below. Since we can't know in general whether a given
125# enum will be used elsewhere in a globaldef, it's hard to decide a
126# priori whether its constants need to be treated as global symbols.
127sub scan_enum {
128 my($line) = @_;
129
130 return unless $isvaxc;
131
132 return unless /^\s+(OP|X)/; # we only want opcode and expectation enums
133 print "\tchecking for enum constant\n" if $debug > 1;
134 $line =~ s#/\*.+##;
135 $line =~ s/,?\s*\n?$//;
136 print "\tfiltered to \\$line\\\n" if $debug > 1;
137 if ($line =~ /(\w+)$/) {
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138 print "\tconstant name is \\$1\\\n" if $debug > 1;
139 $enums{$1}++;
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140 }
141}
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142
143sub scan_var {
144 my($line) = @_;
71be2cbc 145 my($const) = $line =~ /^EXTCONST/;
a0d0e21e 146
748a9306 147 print "\tchecking for global variable\n" if $debug > 1;
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148 $line =~ s/INIT\(.*\)//;
149 $line =~ s/\[.*//;
150 $line =~ s/=.*//;
151 $line =~ s/\W*;?\s*$//;
748a9306 152 print "\tfiltered to \\$line\\\n" if $debug > 1;
a0d0e21e 153 if ($line =~ /(\w+)$/) {
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154 print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
155 if ($const) { $cvars{$1}++; }
156 else { $vars{$1}++; }
157 }
158 if ($isvaxc) {
159 my($type) = $line =~ /^EXT\w*\s+(\w+)/;
160 print "\tchecking for use of enum (type is \"$type\")\n" if $debug > 2;
161 if ($type eq 'expectation') {
162 $used_expectation_enum++;
163 print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
164 }
165 if ($type eq 'opcode') {
166 $used_opcode_enum++;
167 print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
168 }
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169 }
170}
171
172sub scan_func {
173 my($line) = @_;
174
748a9306 175 print "\tchecking for global routine\n" if $debug > 1;
b9f71c63 176 if ( $line =~ /(\w+)\s+\(/ ) {
748a9306 177 print "\troutine name is \\$1\\\n" if $debug > 1;
a0d0e21e 178 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
748a9306 179 print "\tskipped\n" if $debug > 1;
a0d0e21e 180 }
4633a7c4 181 else { $fcns{$1}++ }
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182 }
183}
184
c07a80fd 185$used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
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186if ($docc) {
187 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
188 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
189}
190else {
a5f75d66 191 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
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192}
193LINE: while (<CPP>) {
194 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
195 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
748a9306 196 print "vms_proto>> $_" if $debug > 2;
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197 if (/^EXT/) { &scan_var($_); }
198 else { &scan_func($_); }
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199 last LINE unless $_ = <CPP>;
200 }
748a9306 201 print "vmsish.h>> $_" if $debug > 2;
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202 if (/^EXT/) { &scan_var($_); }
203 last LINE unless $_ = <CPP>;
204 }
205 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
748a9306 206 print "opcode.h>> $_" if $debug > 2;
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207 if (/^OP \*\s/) { &scan_func($_); }
208 if (/^EXT/) { &scan_var($_); }
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209 if (/^\s+OP_/) { &scan_enum($_); }
210 last LINE unless $_ = <CPP>;
211 }
212 while (/^typedef enum/ .. /^\}/) {
213 print "global enum>> $_" if $debug > 2;
214 &scan_enum($_);
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215 last LINE unless $_ = <CPP>;
216 }
217 while (/^#.*proto\.h/i .. /^#.*perl\.h/i) {
748a9306 218 print "proto.h>> $_" if $debug > 2;
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219 if (/^EXT/) { &scan_var($_); }
220 else { &scan_func($_); }
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221 last LINE unless $_ = <CPP>;
222 }
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223 print $_ if $debug > 3 && ($debug > 5 || length($_));
224 if (/^EXT/) { &scan_var($_); }
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225}
226close CPP;
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227
228
229# Kluge to determine whether we need to add EMBED prefix to
740ce14c 230# symbols read from local list. vmsreaddirversions() is a VMS-
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231# specific function whose Perl_ prefix is added in vmsish.h
232# if EMBED is #defined.
740ce14c 233$embed = exists($fcns{'Perl_vmsreaddirversions'}) ? 'Perl_' : '';
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234while (<DATA>) {
235 next if /^#/;
236 s/\s+#.*\n//;
4633a7c4 237 next if /^\s*$/;
a0d0e21e 238 ($key,$array) = split('=',$_);
b9f71c63 239 $key = "$embed$key";
748a9306 240 print "Adding $key to \%$array list\n" if $debug > 1;
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241 ${$array}{$key}++;
242}
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243foreach (split /\s+/, $extnames) {
244 my($pkgname) = $_;
245 $pkgname =~ s/::/__/g;
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246 $fcns{"boot_$pkgname"}++;
247 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
748a9306 248}
a0d0e21e 249
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250# If we're using VAXC, fold in the names of the constants for enums
251# we've seen as the type of global vars.
252if ($isvaxc) {
253 foreach (keys %enums) {
254 if (/^OP/) {
255 $vars{$_}++ if $used_opcode_enum;
256 next;
257 }
258 if (/^X/) {
259 $vars{$_}++ if $used_expectation_enum;
260 next;
261 }
262 print STDERR "Unrecognized enum constant \"$_\" ignored\n";
263 }
264}
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265elsif ($isgcc) {
266 # gcc creates this as a SHR,WRT psect in globals.c, but we
267 # don't see it in the perl.h scan, since it's only declared
268 # if DOINIT is #defined. Bleah. It's cheaper to just add
269 # it by hand than to add /Define=DOINIT to the preprocessing
270 # run and wade through all the extra junk.
2ae324a7 271 $vars{"${embed}Error"}++;
cbb1213b 272}
c07a80fd 273
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274# Eventually, we'll check against existing copies here, so we can add new
275# symbols to an existing options file in an upwardly-compatible manner.
276
277$marord++;
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278open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
279 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
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280if ($isvax) {
281 open(MAR,">${dir}perlshr_gbl${marord}.mar")
282 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306 283 print MAR "\t.title perlshr_gbl$marord\n";
a0d0e21e 284}
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285unless ($isgcc) {
286 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
287 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
288}
289foreach $var (sort (keys %vars,keys %cvars)) {
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290 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
291 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
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292 # This hack brought to you by the lack of a globaldef in gcc.
293 if ($isgcc) {
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294 if ($count++ > 200) { # max 254 psects/file
295 print MAR "\t.end\n";
296 close MAR;
297 $marord++;
298 open(MAR,">${dir}perlshr_gbl${marord}.mar")
299 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306 300 print MAR "\t.title perlshr_gbl$marord\n";
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301 $count = 0;
302 }
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303 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
304 print MAR "\t${var}:: .blkl 1\n";
305 }
306}
307
308print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
4633a7c4 309foreach $func (sort keys %fcns) {
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310 if ($isvax) {
311 print MAR "\t.transfer $func\n";
312 print MAR "\t.mask $func\n";
4633a7c4 313 print MAR "\tjmp G\^${func}+2\n";
a0d0e21e 314 }
748a9306 315 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
a0d0e21e 316}
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317if ($isvax) {
318 print MAR "\t.end\n";
319 close MAR;
320}
a0d0e21e 321
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322open(OPTATTR,">${dir}perlshr_attr.opt")
323 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
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324if ($isvaxc) {
325 print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
326}
327elsif ($isgcc) {
328 foreach $var (sort keys %cvars) {
329 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
330 }
331 foreach $var (sort keys %vars) {
332 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
333 }
334}
335else {
336 print OPTATTR "! No additional linker directives are needed when using DECC\n";
4633a7c4 337}
a0d0e21e 338close OPTATTR;
4633a7c4 339
748a9306 340$incstr = 'perl,globals';
a0d0e21e 341if ($isvax) {
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342 $drvrname = "Compile_shrmars.tmp_".time;
343 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
344 print DRVR "\$ Set NoOn\n";
345 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
346 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
347 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
748a9306 348 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
a0d0e21e 349 print DRVR "\$ Set Verify\n";
748a9306 350 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
a0d0e21e 351 do {
bbce6d69 352 push(@symfiles,"perlshr_gbl$marord");
a0d0e21e 353 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
748a9306 354 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
a0d0e21e 355 } while (--$marord);
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356 # We had to have a working miniperl to run this program; it's probably the
357 # one we just built. It depended on LibPerl, which will be changed when
358 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
359 # and so, therefore, will all of its dependents . . .
360 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
361 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
a0d0e21e 362 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
748a9306 363 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
a0d0e21e 364 close DRVR;
a0d0e21e 365}
748a9306 366
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367# Initial hack to permit building of compatible shareable images for a
368# given version of Perl.
369if ($ENV{PERLSHR_USE_GSMATCH}) {
370 my $major = int($] * 1000) & 0xFF; # range 0..255
371 my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
372 print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
373 foreach (@symfiles) {
374 print OPTBLD "CLUSTER=\$\$TRANSFER_VECTOR,,,$_.$objsuffix\n";
375 }
376}
36477c24 377elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
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378# Include object modules and RTLs in options file
379# Linker wants /Include and /Library on different lines
380print OPTBLD "$libperl/Include=($incstr)\n";
381print OPTBLD "$libperl/Library\n";
a5f75d66 382open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
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383while (<RTLOPT>) { print OPTBLD; }
384close RTLOPT;
385close OPTBLD;
386
387exec "\$ \@$drvrname" if $isvax;
388
389
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390__END__
391
392# Oddball cases, so we can keep the perl.h scan above simple
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393rcsid=vars # declared in perl.c
394regarglen=vars # declared in regcomp.h
395regdummy=vars # declared in regcomp.h
396regkind=vars # declared in regcomp.h
397simple=vars # declared in regcomp.h
398varies=vars # declared in regcomp.h
399watchaddr=vars # declared in run.c
400watchok=vars # declared in run.c
401yychar=vars # generated by byacc in perly.c
402yycheck=vars # generated by byacc in perly.c
403yydebug=vars # generated by byacc in perly.c
404yydefred=vars # generated by byacc in perly.c
405yydgoto=vars # generated by byacc in perly.c
406yyerrflag=vars # generated by byacc in perly.c
407yygindex=vars # generated by byacc in perly.c
408yylen=vars # generated by byacc in perly.c
409yylhs=vars # generated by byacc in perly.c
410yylval=vars # generated by byacc in perly.c
411yyname=vars # generated by byacc in perly.c
412yynerrs=vars # generated by byacc in perly.c
413yyrindex=vars # generated by byacc in perly.c
414yyrule=vars # generated by byacc in perly.c
415yysindex=vars # generated by byacc in perly.c
416yytable=vars # generated by byacc in perly.c
417yyval=vars # generated by byacc in perly.c