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perl 5.002_01: vms/genconfig.pl
[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# $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
13# must be linked
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14#
15# Output:
16# PerlShr_Attr.Opt - linker options file which speficies that global vars
17# be placed in NOSHR,WRT psects. Use when linking any object files
18# against PerlShr.Exe, since cc places global vars in SHR,WRT psects
19# by default.
748a9306 20# PerlShr_Bld.Opt - declares universal symbols for PerlShr.Exe
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21# Perlshr_Gbl*.Mar, Perlshr_Gbl*.Obj (VAX only) - declares global symbols
22# for global vars (done here because gcc can't globaldef) and creates
23# transfer vectors for routines on a VAX.
24# PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
25# to the linker when building PerlShr.Exe.
26#
27# To do:
28# - figure out a good way to collect global vars in one psect, given that
29# we can't use globaldef because of gcc.
30# - then, check for existing files and preserve symbol and transfer vector
31# order for upward compatibility
32# - then, add GSMATCH to options file - but how do we insure that new
33# library has everything old one did
34# (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
35#
36# Author: Charles Bailey bailey@genetics.upenn.edu
a5f75d66 37# Revised: 20-Feb-1996
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38
39require 5.000;
40
41$debug = $ENV{'GEN_SHRFLS_DEBUG'};
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42
43if ($ARGV[0] eq '-f') {
44 open(INP,$ARGV[1]) or die "Can't read input file $ARGV[1]: $!\n";
45 print "Input taken from file $ARGV[1]\n" if $debug;
46 @ARGV = ();
47 while (<INP>) {
48 chomp;
49 push(@ARGV,split(/\|/,$_));
50 }
51 close INP;
52 print "Read input data | ",join(' | ',@ARGV)," |\n" if $debug > 1;
53}
54
a0d0e21e 55$cc_cmd = shift @ARGV;
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56
57# Someday, we'll have $GetSyI built into perl . . .
58$isvax = `\$ Write Sys\$Output F\$GetSyI(\"HW_MODEL\")` <= 1024;
59print "\$isvax: \\$isvax\\\n" if $debug;
60
a0d0e21e 61print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
4633a7c4 62$docc = ($cc_cmd !~ /^~~/);
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63print "\$docc = $docc\n" if $debug;
64
65if ($docc) {
66 # put quotes back onto defines - they were removed by DCL on the way in
67 if (($prefix,$defines,$suffix) =
68 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
69 $defines =~ s/^\((.*)\)$/$1/;
70 @defines = split(/,/,$defines);
71 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
72 . ')' . $suffix;
73 }
74 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
75
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76 # check for gcc - if present, we'll need to use MACRO hack to
77 # define global symbols for shared variables
78 $isvaxc = 0;
79 $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
80 or 0; # make debug output nice
e518068a 81 $isvaxc = (!$isgcc && $isvax && `$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/)
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82 or 0; # again, make debug output nice
83 print "\$isgcc: $isgcc\n" if $debug;
84 print "\$isvaxc: $isvaxc\n" if $debug;
85
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86 if (-f 'perl.h') { $dir = '[]'; }
87 elsif (-f '[-]perl.h') { $dir = '[-]'; }
88 else { die "$0: Can't find perl.h\n"; }
89}
4633a7c4 90else {
a5f75d66 91 ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
482b294c 92 $isgcc = $cc_cmd =~ /case_hack/i
4633a7c4 93 or 0; # for nice debug output
482b294c 94 $isvaxc = (!$isgcc && $cc_cmd !~ /standard=/i)
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95 or 0; # again, for nice debug output
96 print "\$isgcc: \\$isgcc\\\n" if $debug;
97 print "\$isvaxc: \\$isvaxc\\\n" if $debug;
98 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
99}
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100
101$objsuffix = shift @ARGV;
102print "\$objsuffix: \\$objsuffix\\\n" if $debug;
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103$dbgprefix = shift @ARGV;
104print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
105$olbsuffix = shift @ARGV;
106print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
107$libperl = "${dbgprefix}libperl$olbsuffix";
108$extnames = shift @ARGV;
109print "\$extnames: \\$extnames\\\n" if $debug;
110$rtlopt = shift @ARGV;
111print "\$rtlopt: \\$rtlopt\\\n" if $debug;
a0d0e21e 112
e518068a 113# This part gets tricky. VAXC creates global symbols for each of the
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114# constants in an enum if that enum is ever used as the data type of a
115# global[dr]ef. We have to detect enums which are used in this way, so we
116# can set up the constants as universal symbols, since anything which
117# #includes perl.h will want to resolve these global symbols.
118# We're using a weak test here - we basically know that the only enums
119# we need to handle now are the big one in opcode.h, and the
120# "typedef enum { ... } expectation" in perl.h, so we hard code
121# appropriate tests below. Since we can't know in general whether a given
122# enum will be used elsewhere in a globaldef, it's hard to decide a
123# priori whether its constants need to be treated as global symbols.
124sub scan_enum {
125 my($line) = @_;
126
127 return unless $isvaxc;
128
129 return unless /^\s+(OP|X)/; # we only want opcode and expectation enums
130 print "\tchecking for enum constant\n" if $debug > 1;
131 $line =~ s#/\*.+##;
132 $line =~ s/,?\s*\n?$//;
133 print "\tfiltered to \\$line\\\n" if $debug > 1;
134 if ($line =~ /(\w+)$/) {
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135 print "\tconstant name is \\$1\\\n" if $debug > 1;
136 $enums{$1}++;
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137 }
138}
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139
140sub scan_var {
141 my($line) = @_;
142
748a9306 143 print "\tchecking for global variable\n" if $debug > 1;
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144 $line =~ s/INIT\(.*\)//;
145 $line =~ s/\[.*//;
146 $line =~ s/=.*//;
147 $line =~ s/\W*;?\s*$//;
748a9306 148 print "\tfiltered to \\$line\\\n" if $debug > 1;
a0d0e21e 149 if ($line =~ /(\w+)$/) {
748a9306 150 print "\tvar name is \\$1\\\n" if $debug > 1;
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151 $vars{$1}++;
152 }
153}
154
155sub scan_func {
156 my($line) = @_;
157
748a9306 158 print "\tchecking for global routine\n" if $debug > 1;
a0d0e21e 159 if ( /(\w+)\s+\(/ ) {
748a9306 160 print "\troutine name is \\$1\\\n" if $debug > 1;
a0d0e21e 161 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
748a9306 162 print "\tskipped\n" if $debug > 1;
a0d0e21e 163 }
4633a7c4 164 else { $fcns{$1}++ }
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165 }
166}
167
c07a80fd 168$used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
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169if ($docc) {
170 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
171 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
172}
173else {
a5f75d66 174 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
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175}
176LINE: while (<CPP>) {
177 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
178 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
748a9306 179 print "vms_proto>> $_" if $debug > 2;
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180 &scan_func($_);
181 if (/^EXT/) { &scan_var($_); }
182 last LINE unless $_ = <CPP>;
183 }
748a9306 184 print "vmsish.h>> $_" if $debug > 2;
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185 if (/^EXT/) { &scan_var($_); }
186 last LINE unless $_ = <CPP>;
187 }
188 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
748a9306 189 print "opcode.h>> $_" if $debug > 2;
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190 if (/^OP \*\s/) { &scan_func($_); }
191 if (/^EXT/) { &scan_var($_); }
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192 if (/^\s+OP_/) { &scan_enum($_); }
193 last LINE unless $_ = <CPP>;
194 }
195 while (/^typedef enum/ .. /^\}/) {
196 print "global enum>> $_" if $debug > 2;
197 &scan_enum($_);
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198 last LINE unless $_ = <CPP>;
199 }
200 while (/^#.*proto\.h/i .. /^#.*perl\.h/i) {
748a9306 201 print "proto.h>> $_" if $debug > 2;
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202 &scan_func($_);
203 if (/^EXT/) { &scan_var($_); }
204 last LINE unless $_ = <CPP>;
205 }
748a9306 206 print $_ if $debug > 3;
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207 if (($type) = /^EXT\s+(\w+)/) {
208 if ($isvaxc) {
209 if ($type eq 'expectation') {
210 $used_expectation_enum++;
211 print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
212 }
213 if ($type eq 'opcode') {
214 $used_opcode_enum++;
215 print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
216 }
217 }
218 &scan_var($_);
219 }
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220}
221close CPP;
222while (<DATA>) {
223 next if /^#/;
224 s/\s+#.*\n//;
4633a7c4 225 next if /^\s*$/;
a0d0e21e 226 ($key,$array) = split('=',$_);
748a9306 227 print "Adding $key to \%$array list\n" if $debug > 1;
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228 ${$array}{$key}++;
229}
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230foreach (split /\s+/, $extnames) {
231 my($pkgname) = $_;
232 $pkgname =~ s/::/__/g;
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233 $fcns{"boot_$pkgname"}++;
234 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
748a9306 235}
a0d0e21e 236
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237# If we're using VAXC, fold in the names of the constants for enums
238# we've seen as the type of global vars.
239if ($isvaxc) {
240 foreach (keys %enums) {
241 if (/^OP/) {
242 $vars{$_}++ if $used_opcode_enum;
243 next;
244 }
245 if (/^X/) {
246 $vars{$_}++ if $used_expectation_enum;
247 next;
248 }
249 print STDERR "Unrecognized enum constant \"$_\" ignored\n";
250 }
251}
252
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253# Eventually, we'll check against existing copies here, so we can add new
254# symbols to an existing options file in an upwardly-compatible manner.
255
256$marord++;
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257open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
258 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
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259if ($isvax) {
260 open(MAR,">${dir}perlshr_gbl${marord}.mar")
261 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306 262 print MAR "\t.title perlshr_gbl$marord\n";
a0d0e21e 263}
a0d0e21e 264foreach $var (sort keys %vars) {
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265 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
266 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
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267 # This hack brought to you by the lack of a globaldef in gcc.
268 if ($isgcc) {
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269 if ($count++ > 200) { # max 254 psects/file
270 print MAR "\t.end\n";
271 close MAR;
272 $marord++;
273 open(MAR,">${dir}perlshr_gbl${marord}.mar")
274 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306 275 print MAR "\t.title perlshr_gbl$marord\n";
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276 $count = 0;
277 }
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278 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
279 print MAR "\t${var}:: .blkl 1\n";
280 }
281}
282
283print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
4633a7c4 284foreach $func (sort keys %fcns) {
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285 if ($isvax) {
286 print MAR "\t.transfer $func\n";
287 print MAR "\t.mask $func\n";
4633a7c4 288 print MAR "\tjmp G\^${func}+2\n";
a0d0e21e 289 }
748a9306 290 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
a0d0e21e 291}
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292if ($isvax) {
293 print MAR "\t.end\n";
294 close MAR;
295}
a0d0e21e 296
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297open(OPTATTR,">${dir}perlshr_attr.opt")
298 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
299print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
300foreach $var (sort keys %vars) {
301 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
302}
a0d0e21e 303close OPTATTR;
4633a7c4 304
748a9306 305$incstr = 'perl,globals';
a0d0e21e 306if ($isvax) {
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307 $drvrname = "Compile_shrmars.tmp_".time;
308 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
309 print DRVR "\$ Set NoOn\n";
310 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
311 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
312 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
748a9306 313 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
a0d0e21e 314 print DRVR "\$ Set Verify\n";
748a9306 315 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
a0d0e21e 316 do {
748a9306 317 $incstr .= ",perlshr_gbl$marord";
a0d0e21e 318 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
748a9306 319 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
a0d0e21e 320 } while (--$marord);
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321 # We had to have a working miniperl to run this program; it's probably the
322 # one we just built. It depended on LibPerl, which will be changed when
323 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
324 # and so, therefore, will all of its dependents . . .
325 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
326 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
a0d0e21e 327 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
748a9306 328 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
a0d0e21e 329 close DRVR;
a0d0e21e 330}
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331
332# Include object modules and RTLs in options file
333# Linker wants /Include and /Library on different lines
334print OPTBLD "$libperl/Include=($incstr)\n";
335print OPTBLD "$libperl/Library\n";
a5f75d66 336open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
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337while (<RTLOPT>) { print OPTBLD; }
338close RTLOPT;
339close OPTBLD;
340
341exec "\$ \@$drvrname" if $isvax;
342
343
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344__END__
345
346# Oddball cases, so we can keep the perl.h scan above simple
347error=vars # declared in perl.h only when DOINIT defined by INTERN.h
348rcsid=vars # declared in perl.c
349regarglen=vars # declared in regcomp.h
350regdummy=vars # declared in regcomp.h
351regkind=vars # declared in regcomp.h
352simple=vars # declared in regcomp.h
353varies=vars # declared in regcomp.h
354watchaddr=vars # declared in run.c
355watchok=vars # declared in run.c
356yychar=vars # generated by byacc in perly.c
357yycheck=vars # generated by byacc in perly.c
358yydebug=vars # generated by byacc in perly.c
359yydefred=vars # generated by byacc in perly.c
360yydgoto=vars # generated by byacc in perly.c
361yyerrflag=vars # generated by byacc in perly.c
362yygindex=vars # generated by byacc in perly.c
363yylen=vars # generated by byacc in perly.c
364yylhs=vars # generated by byacc in perly.c
365yylval=vars # generated by byacc in perly.c
366yyname=vars # generated by byacc in perly.c
367yynerrs=vars # generated by byacc in perly.c
368yyrindex=vars # generated by byacc in perly.c
369yyrule=vars # generated by byacc in perly.c
370yysindex=vars # generated by byacc in perly.c
371yytable=vars # generated by byacc in perly.c
372yyval=vars # generated by byacc in perly.c