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@genetics.upenn.edu
41 $debug = $ENV{'GEN_SHRFLS_DEBUG'};
42 $cc_cmd = shift @ARGV;
44 # Someday, we'll have $GetSyI built into perl . . .
45 $isvax = `\$ Write Sys\$Output F\$GetSyI(\"HW_MODEL\")` <= 1024;
46 print "\$isvax: \\$isvax\\\n" if $debug;
48 print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
49 $docc = ($cc_cmd !~ /^~~/);
50 print "\$docc = $docc\n" if $debug;
53 # put quotes back onto defines - they were removed by DCL on the way in
54 if (($prefix,$defines,$suffix) =
55 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
56 $defines =~ s/^\((.*)\)$/$1/;
57 @defines = split(/,/,$defines);
58 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
61 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
63 # check for gcc - if present, we'll need to use MACRO hack to
64 # define global symbols for shared variables
66 $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
67 or 0; # make debug output nice
68 $isvaxc = (!$isgcc && $isvax && `$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/)
69 or 0; # again, make debug output nice
70 print "\$isgcc: $isgcc\n" if $debug;
71 print "\$isvaxc: $isvaxc\n" if $debug;
73 if (-f 'perl.h') { $dir = '[]'; }
74 elsif (-f '[-]perl.h') { $dir = '[-]'; }
75 else { die "$0: Can't find perl.h\n"; }
78 ($ccvers,$cpp_file) = ($cc_cmd =~ /^~~(\w+)~~(.*)/);
79 $isgcc = $ccvers =~ /GCC/
80 or 0; # for nice debug output
81 $isvaxc = (!$isgcc && $ccvers =~ /VAXC/)
82 or 0; # again, for nice debug output
83 print "\$isgcc: \\$isgcc\\\n" if $debug;
84 print "\$isvaxc: \\$isvaxc\\\n" if $debug;
85 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
88 $objsuffix = shift @ARGV;
89 print "\$objsuffix: \\$objsuffix\\\n" if $debug;
90 $dbgprefix = shift @ARGV;
91 print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
92 $olbsuffix = shift @ARGV;
93 print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
94 $libperl = "${dbgprefix}libperl$olbsuffix";
95 $extnames = shift @ARGV;
96 print "\$extnames: \\$extnames\\\n" if $debug;
97 $rtlopt = shift @ARGV;
98 print "\$rtlopt: \\$rtlopt\\\n" if $debug;
100 # This part gets tricky. VAXC creates global symbols for each of the
101 # constants in an enum if that enum is ever used as the data type of a
102 # global[dr]ef. We have to detect enums which are used in this way, so we
103 # can set up the constants as universal symbols, since anything which
104 # #includes perl.h will want to resolve these global symbols.
105 # We're using a weak test here - we basically know that the only enums
106 # we need to handle now are the big one in opcode.h, and the
107 # "typedef enum { ... } expectation" in perl.h, so we hard code
108 # appropriate tests below. Since we can't know in general whether a given
109 # enum will be used elsewhere in a globaldef, it's hard to decide a
110 # priori whether its constants need to be treated as global symbols.
114 return unless $isvaxc;
116 return unless /^\s+(OP|X)/; # we only want opcode and expectation enums
117 print "\tchecking for enum constant\n" if $debug > 1;
119 $line =~ s/,?\s*\n?$//;
120 print "\tfiltered to \\$line\\\n" if $debug > 1;
121 if ($line =~ /(\w+)$/) {
122 print "\tconstant name is \\$1\\\n" if $debug > 1;
130 print "\tchecking for global variable\n" if $debug > 1;
131 $line =~ s/INIT\(.*\)//;
134 $line =~ s/\W*;?\s*$//;
135 print "\tfiltered to \\$line\\\n" if $debug > 1;
136 if ($line =~ /(\w+)$/) {
137 print "\tvar name is \\$1\\\n" if $debug > 1;
145 print "\tchecking for global routine\n" if $debug > 1;
146 if ( /(\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 $used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
157 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
158 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
161 open(CPP,"$cpp_file") or die "$0: Can't read $cpp_file: $!\n";
163 LINE: while (<CPP>) {
164 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
165 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
166 print "vms_proto>> $_" if $debug > 2;
168 if (/^EXT/) { &scan_var($_); }
169 last LINE unless $_ = <CPP>;
171 print "vmsish.h>> $_" if $debug > 2;
172 if (/^EXT/) { &scan_var($_); }
173 last LINE unless $_ = <CPP>;
175 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
176 print "opcode.h>> $_" if $debug > 2;
177 if (/^OP \*\s/) { &scan_func($_); }
178 if (/^EXT/) { &scan_var($_); }
179 if (/^\s+OP_/) { &scan_enum($_); }
180 last LINE unless $_ = <CPP>;
182 while (/^typedef enum/ .. /^\}/) {
183 print "global enum>> $_" if $debug > 2;
185 last LINE unless $_ = <CPP>;
187 while (/^#.*proto\.h/i .. /^#.*perl\.h/i) {
188 print "proto.h>> $_" if $debug > 2;
190 if (/^EXT/) { &scan_var($_); }
191 last LINE unless $_ = <CPP>;
193 print $_ if $debug > 3;
194 if (($type) = /^EXT\s+(\w+)/) {
196 if ($type eq 'expectation') {
197 $used_expectation_enum++;
198 print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
200 if ($type eq 'opcode') {
202 print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
213 ($key,$array) = split('=',$_);
214 print "Adding $key to \%$array list\n" if $debug > 1;
217 foreach (split /\s+/, $extnames) {
219 $pkgname =~ s/::/__/g;
220 $fcns{"boot_$pkgname"}++;
221 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
224 # If we're using VAXC, fold in the names of the constants for enums
225 # we've seen as the type of global vars.
227 foreach (keys %enums) {
229 $vars{$_}++ if $used_opcode_enum;
233 $vars{$_}++ if $used_expectation_enum;
236 print STDERR "Unrecognized enum constant \"$_\" ignored\n";
240 # Eventually, we'll check against existing copies here, so we can add new
241 # symbols to an existing options file in an upwardly-compatible manner.
244 open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
245 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
247 open(MAR,">${dir}perlshr_gbl${marord}.mar")
248 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
249 print MAR "\t.title perlshr_gbl$marord\n";
251 foreach $var (sort keys %vars) {
252 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
253 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
254 # This hack brought to you by the lack of a globaldef in gcc.
256 if ($count++ > 200) { # max 254 psects/file
257 print MAR "\t.end\n";
260 open(MAR,">${dir}perlshr_gbl${marord}.mar")
261 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
262 print MAR "\t.title perlshr_gbl$marord\n";
265 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
266 print MAR "\t${var}:: .blkl 1\n";
270 print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
271 foreach $func (sort keys %fcns) {
273 print MAR "\t.transfer $func\n";
274 print MAR "\t.mask $func\n";
275 print MAR "\tjmp G\^${func}+2\n";
277 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
280 print MAR "\t.end\n";
284 open(OPTATTR,">${dir}perlshr_attr.opt")
285 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
286 print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
287 foreach $var (sort keys %vars) {
288 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
292 $incstr = 'perl,globals';
294 $drvrname = "Compile_shrmars.tmp_".time;
295 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
296 print DRVR "\$ Set NoOn\n";
297 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
298 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
299 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
300 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
301 print DRVR "\$ Set Verify\n";
302 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
304 $incstr .= ",perlshr_gbl$marord";
305 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
306 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
308 # We had to have a working miniperl to run this program; it's probably the
309 # one we just built. It depended on LibPerl, which will be changed when
310 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
311 # and so, therefore, will all of its dependents . . .
312 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
313 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
314 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
315 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
319 # Include object modules and RTLs in options file
320 # Linker wants /Include and /Library on different lines
321 print OPTBLD "$libperl/Include=($incstr)\n";
322 print OPTBLD "$libperl/Library\n";
323 open(RTLOPT,$rtlopt) or die "$0: Can't read $rtlopt: $!\n";
324 while (<RTLOPT>) { print OPTBLD; }
328 exec "\$ \@$drvrname" if $isvax;
333 # Oddball cases, so we can keep the perl.h scan above simple
334 error=vars # declared in perl.h only when DOINIT defined by INTERN.h
335 rcsid=vars # declared in perl.c
336 regarglen=vars # declared in regcomp.h
337 regdummy=vars # declared in regcomp.h
338 regkind=vars # declared in regcomp.h
339 simple=vars # declared in regcomp.h
340 varies=vars # declared in regcomp.h
341 watchaddr=vars # declared in run.c
342 watchok=vars # declared in run.c
343 yychar=vars # generated by byacc in perly.c
344 yycheck=vars # generated by byacc in perly.c
345 yydebug=vars # generated by byacc in perly.c
346 yydefred=vars # generated by byacc in perly.c
347 yydgoto=vars # generated by byacc in perly.c
348 yyerrflag=vars # generated by byacc in perly.c
349 yygindex=vars # generated by byacc in perly.c
350 yylen=vars # generated by byacc in perly.c
351 yylhs=vars # generated by byacc in perly.c
352 yylval=vars # generated by byacc in perly.c
353 yyname=vars # generated by byacc in perly.c
354 yynerrs=vars # generated by byacc in perly.c
355 yyrindex=vars # generated by byacc in perly.c
356 yyrule=vars # generated by byacc in perly.c
357 yysindex=vars # generated by byacc in perly.c
358 yytable=vars # generated by byacc in perly.c
359 yyval=vars # generated by byacc in perly.c