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
37 # Revised: 28-May-1995
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 /ansi_alias _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 creating global symbols for 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 "\tvar 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 $debug > 1;
156 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
157 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
160 open(CPP,"$cpp_file") or die "$0: Can't read $cpp_file: $!\n";
162 LINE: while (<CPP>) {
163 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
164 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
165 print "vms_proto>> $_" if $debug > 2;
167 if (/^EXT/) { &scan_var($_); }
168 last LINE unless $_ = <CPP>;
170 print "vmsish.h>> $_" if $debug > 2;
171 if (/^EXT/) { &scan_var($_); }
172 last LINE unless $_ = <CPP>;
174 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
175 print "opcode.h>> $_" if $debug > 2;
176 if (/^OP \*\s/) { &scan_func($_); }
177 if (/^EXT/) { &scan_var($_); }
178 if (/^\s+OP_/) { &scan_enum($_); }
179 last LINE unless $_ = <CPP>;
181 while (/^typedef enum/ .. /^\}/) {
182 print "global enum>> $_" if $debug > 2;
184 last LINE unless $_ = <CPP>;
186 while (/^#.*proto\.h/i .. /^#.*perl\.h/i) {
187 print "proto.h>> $_" if $debug > 2;
189 if (/^EXT/) { &scan_var($_); }
190 last LINE unless $_ = <CPP>;
192 print $_ if $debug > 3;
193 if (/^EXT/) { &scan_var($_); }
200 ($key,$array) = split('=',$_);
201 print "Adding $key to \%$array list\n" if $debug > 1;
204 foreach (split /\s+/, $extnames) {
206 $pkgname =~ s/::/__/g;
207 $fcns{"boot_$pkgname"}++;
208 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
211 # Eventually, we'll check against existing copies here, so we can add new
212 # symbols to an existing options file in an upwardly-compatible manner.
215 open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
216 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
218 open(MAR,">${dir}perlshr_gbl${marord}.mar")
219 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
220 print MAR "\t.title perlshr_gbl$marord\n";
222 foreach $var (sort keys %vars) {
223 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
224 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
225 # This hack brought to you by the lack of a globaldef in gcc.
227 if ($count++ > 200) { # max 254 psects/file
228 print MAR "\t.end\n";
231 open(MAR,">${dir}perlshr_gbl${marord}.mar")
232 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
233 print MAR "\t.title perlshr_gbl$marord\n";
236 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
237 print MAR "\t${var}:: .blkl 1\n";
241 print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
242 foreach $func (sort keys %fcns) {
244 print MAR "\t.transfer $func\n";
245 print MAR "\t.mask $func\n";
246 print MAR "\tjmp G\^${func}+2\n";
248 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
251 print MAR "\t.end\n";
255 open(OPTATTR,">${dir}perlshr_attr.opt")
256 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
257 print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
258 foreach $var (sort keys %vars) {
259 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
263 $incstr = 'perl,globals';
265 $drvrname = "Compile_shrmars.tmp_".time;
266 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
267 print DRVR "\$ Set NoOn\n";
268 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
269 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
270 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
271 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
272 print DRVR "\$ Set Verify\n";
273 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
275 $incstr .= ",perlshr_gbl$marord";
276 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
277 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
279 # We had to have a working miniperl to run this program; it's probably the
280 # one we just built. It depended on LibPerl, which will be changed when
281 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
282 # and so, therefore, will all of its dependents . . .
283 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
284 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
285 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
286 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
290 # Include object modules and RTLs in options file
291 # Linker wants /Include and /Library on different lines
292 print OPTBLD "$libperl/Include=($incstr)\n";
293 print OPTBLD "$libperl/Library\n";
294 open(RTLOPT,$rtlopt) or die "$0: Can't read $rtlopt: $!\n";
295 while (<RTLOPT>) { print OPTBLD; }
299 exec "\$ \@$drvrname" if $isvax;
304 # Oddball cases, so we can keep the perl.h scan above simple
305 error=vars # declared in perl.h only when DOINIT defined by INTERN.h
306 rcsid=vars # declared in perl.c
307 regarglen=vars # declared in regcomp.h
308 regdummy=vars # declared in regcomp.h
309 regkind=vars # declared in regcomp.h
310 simple=vars # declared in regcomp.h
311 varies=vars # declared in regcomp.h
312 watchaddr=vars # declared in run.c
313 watchok=vars # declared in run.c
314 yychar=vars # generated by byacc in perly.c
315 yycheck=vars # generated by byacc in perly.c
316 yydebug=vars # generated by byacc in perly.c
317 yydefred=vars # generated by byacc in perly.c
318 yydgoto=vars # generated by byacc in perly.c
319 yyerrflag=vars # generated by byacc in perly.c
320 yygindex=vars # generated by byacc in perly.c
321 yylen=vars # generated by byacc in perly.c
322 yylhs=vars # generated by byacc in perly.c
323 yylval=vars # generated by byacc in perly.c
324 yyname=vars # generated by byacc in perly.c
325 yynerrs=vars # generated by byacc in perly.c
326 yyrindex=vars # generated by byacc in perly.c
327 yyrule=vars # generated by byacc in perly.c
328 yysindex=vars # generated by byacc in perly.c
329 yytable=vars # generated by byacc in perly.c
330 yyval=vars # generated by byacc in perly.c