1 # Create global symbol declarations, transfer vector, and
2 # linker options files for PerlShr.
4 # Processes the output of makedef.pl.
7 # $cc_cmd - compiler command
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 specifies 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@newman.upenn.edu
41 my $debug = $ENV{'GEN_SHRFLS_DEBUG'};
43 print "gen_shrfls.pl Rev. 8-Jul-2011\n" if $debug;
45 if ($ARGV[0] eq '-f') {
46 open(INP,$ARGV[1]) or die "Can't read input file $ARGV[1]: $!\n";
47 print "Input taken from file $ARGV[1]\n" if $debug;
51 push(@ARGV,split(/\|/,$_));
54 print "Read input data | ",join(' | ',@ARGV)," |\n" if $debug > 1;
57 my $cc_cmd = shift @ARGV; # no longer used to run the preprocessor
59 # Someday, we'll have $GetSyI built into perl . . .
60 my $isvax = `\$ Write Sys\$Output \(F\$GetSyI(\"HW_MODEL\") .LE. 1024 .AND. F\$GetSyI(\"HW_MODEL\") .GT. 0\)`;
62 print "\$isvax: \\$isvax\\\n" if $debug;
64 my $isi64 = `\$ Write Sys\$Output \(F\$GetSyI(\"HW_MODEL\") .GE. 4096)`;
66 print "\$isi64: \\$isi64\\\n" if $debug;
68 print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
69 my $docc = ($cc_cmd !~ /^~~/);
70 print "\$docc = $docc\n" if $debug;
72 my ( $use_threads, $use_mymalloc, $care_about_case, $shorten_symbols,
73 $debugging_enabled, $hide_mymalloc, $isgcc, $use_perlio, $dir )
74 = ( 0, 0, 0, 0, 0, 0, 0, 0 );
76 if (-f 'perl.h') { $dir = '[]'; }
77 elsif (-f '[-]perl.h') { $dir = '[-]'; }
78 else { die "$0: Can't find perl.h\n"; }
80 # Go see what is enabled in config.sh
81 my $config = $dir . "config.sh";
82 open CONFIG, '<', $config;
84 $use_threads++ if /usethreads='(define|yes|true|t|y|1)'/i;
85 $use_mymalloc++ if /usemymalloc='(define|yes|true|t|y|1)'/i;
86 $care_about_case++ if /d_vms_case_sensitive_symbols='(define|yes|true|t|y|1)'/i;
87 $shorten_symbols++ if /d_vms_shorten_long_symbols='(define|yes|true|t|y|1)'/i;
88 $debugging_enabled++ if /usedebugging_perl='(define|yes|true|t|y|1)'/i;
89 $hide_mymalloc++ if /embedmymalloc='(define|yes|true|t|y|1)'/i;
90 $isgcc++ if /gccversion='[^']/;
91 $use_perlio++ if /useperlio='(define|yes|true|t|y|1)'/i;
95 # put quotes back onto defines - they were removed by DCL on the way in
96 if (my ($prefix,$defines,$suffix) =
97 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
98 $defines =~ s/^\((.*)\)$/$1/;
99 $debugging_enabled ||= $defines =~ /\bDEBUGGING\b/;
100 my @defines = split(/,/,$defines);
101 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
104 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
106 # check for gcc - if present, we'll need to use MACRO hack to
107 # define global symbols for shared variables
109 print "\$isgcc: $isgcc\n" if $debug;
110 print "\$debugging_enabled: $debugging_enabled\n" if $debug;
112 my $objsuffix = shift @ARGV;
113 print "\$objsuffix: \\$objsuffix\\\n" if $debug;
114 my $dbgprefix = shift @ARGV;
115 print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
116 my $olbsuffix = shift @ARGV;
117 print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
118 my $libperl = "${dbgprefix}libperl$olbsuffix";
119 my $extnames = shift @ARGV;
120 print "\$extnames: \\$extnames\\\n" if $debug;
121 my $rtlopt = shift @ARGV;
122 print "\$rtlopt: \\$rtlopt\\\n" if $debug;
126 open my $makedefs, '<', $dir . 'makedef.lis' or die "Unable to open makedef.lis: $!";
128 while (my $line = <$makedefs>) {
130 # makedef.pl loses distinction between vars and funcs, so
131 # use the start of the name to guess and add specific
132 # exceptions when we know about them.
134 || $line eq 'PerlIO_perlio'
135 || $line eq 'PerlIO_pending') {
143 if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
144 foreach (split /\s+/, $extnames) {
146 $pkgname =~ s/::/__/g;
147 $fcns{"boot_$pkgname"}++;
148 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
151 # For symbols over 31 characters, export the shortened name.
152 # TODO: Make this general purpose so we can predict the shortened name the
153 # compiler will generate for any symbol over 31 characters in length. The
154 # docs to CC/NAMES=SHORTENED describe the CRC used to shorten the name, but
155 # don't describe its use fully enough to actually mimic what the compiler
158 if ($shorten_symbols) {
159 if (exists $fcns{'Perl_ck_entersub_args_proto_or_list'}) {
160 delete $fcns{'Perl_ck_entersub_args_proto_or_list'};
161 if ($care_about_case) {
162 $fcns{'Perl_ck_entersub_args_p11c2bjj$'}++;
165 $fcns{'PERL_CK_ENTERSUB_ARGS_P3IAT616$'}++;
170 # Eventually, we'll check against existing copies here, so we can add new
171 # symbols to an existing options file in an upwardly-compatible manner.
174 open(OPTBLD,'>', "${dir}${dbgprefix}perlshr_bld.opt")
175 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
177 open(MAR, '>', "${dir}perlshr_gbl${marord}.mar")
178 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
179 print MAR "\t.title perlshr_gbl$marord\n";
184 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,NOEXE,RD,NOWRT,SHR\n";
185 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,NOEXE,RD,WRT,NOSHR\n";
188 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
189 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
192 print OPTBLD "case_sensitive=yes\n" if $care_about_case;
194 foreach my $var (sort (keys %vars)) {
195 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
196 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
197 # This hack brought to you by the lack of a globaldef in gcc.
199 if ($count++ > 200) { # max 254 psects/file
200 print MAR "\t.end\n";
203 open(MAR, '>', "${dir}perlshr_gbl${marord}.mar")
204 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
205 print MAR "\t.title perlshr_gbl$marord\n";
208 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
209 print MAR "\t${var}:: .blkl 1\n";
213 print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
214 foreach my $func (sort keys %fcns) {
216 print MAR "\t.transfer $func\n";
217 print MAR "\t.mask $func\n";
218 print MAR "\tjmp G\^${func}+2\n";
220 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
223 print MAR "\t.end\n";
227 open(OPTATTR, '>', "${dir}perlshr_attr.opt")
228 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
230 # TODO -- lost ability to distinguish constant vars from others when
231 # we switched to using makedef.pl for input.
232 # foreach my $var (sort keys %cvars) {
233 # print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
235 foreach my $var (sort keys %vars) {
236 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
240 print OPTATTR "! No additional linker directives are needed when using DECC\n";
244 my $incstr = 'PERL,GLOBALS';
245 my (@symfiles, $drvrname);
247 $drvrname = "Compile_shrmars.tmp_".time;
248 open (DRVR,'>', $drvrname) or die "$0: Can't write to $drvrname: $!\n";
249 print DRVR "\$ Set NoOn\n";
250 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
251 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
252 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
253 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
254 print DRVR "\$ Set Verify\n";
255 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
257 push(@symfiles,"perlshr_gbl$marord");
258 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
259 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
261 # We had to have a working miniperl to run this program; it's probably the
262 # one we just built. It depended on LibPerl, which will be changed when
263 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
264 # and so, therefore, will all of its dependents . . .
265 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
266 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
267 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
268 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
272 # Initial hack to permit building of compatible shareable images for a
273 # given version of Perl.
274 if ($ENV{PERLSHR_USE_GSMATCH}) {
275 if ($ENV{PERLSHR_USE_GSMATCH} eq 'INCLUDE_COMPILE_OPTIONS') {
276 # Build up a major ID. Since it can only be 8 bits, we encode the version
277 # number in the top four bits and use the bottom four for build options
278 # that'll cause incompatibilities
279 my ($ver, $sub) = $] =~ /\.(\d\d\d)(\d\d)/;
280 $ver += 0; $sub += 0;
281 my $gsmatch = ($sub >= 50) ? "equal" : "lequal"; # Force an equal match for
282 # dev, but be more forgiving
286 $ver += 8 if $debugging_enabled; # If DEBUGGING is set
287 $ver += 4 if $use_threads; # if we're threaded
288 $ver += 2 if $use_mymalloc; # if we're using perl's malloc
289 print OPTBLD "GSMATCH=$gsmatch,$ver,$sub\n";
292 my $major = int($] * 1000) & 0xFF; # range 0..255
293 my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
294 print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
296 print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
297 map(",$_$objsuffix",@symfiles), "\n";
299 elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
300 # Include object modules and RTLs in options file
301 # Linker wants /Include and /Library on different lines
302 print OPTBLD "$libperl/Include=($incstr)\n";
303 print OPTBLD "$libperl/Library\n";
304 open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
305 while (<RTLOPT>) { print OPTBLD; }
309 exec "\$ \@$drvrname" if $isvax;