source: trunk/essentials/dev-lang/perl/vms/gen_shrfls.pl

Last change on this file was 3181, checked in by bird, 18 years ago

perl 5.8.8

File size: 13.5 KB
Line 
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.
9# $libperl - Perl object library.
10# $extnames - package names for static extensions (used to generate
11# linker options file entries for boot functions)
12# $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
13# must be linked
14#
15# Output:
16# PerlShr_Attr.Opt - linker options file which speficies that global vars
17# be placed in NOSHR,WRT psects. Use when linking any object files
18# against PerlShr.Exe, since cc places global vars in SHR,WRT psects
19# by default.
20# PerlShr_Bld.Opt - declares universal symbols for PerlShr.Exe
21# Perlshr_Gbl*.Mar, Perlshr_Gbl*.Obj (VAX only) - declares global symbols
22# for global vars (done here because gcc can't globaldef) and creates
23# transfer vectors for routines on a VAX.
24# PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
25# to the linker when building PerlShr.Exe.
26#
27# To do:
28# - figure out a good way to collect global vars in one psect, given that
29# we can't use globaldef because of gcc.
30# - then, check for existing files and preserve symbol and transfer vector
31# order for upward compatibility
32# - then, add GSMATCH to options file - but how do we insure that new
33# library has everything old one did
34# (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
35#
36# Author: Charles Bailey bailey@newman.upenn.edu
37
38require 5.000;
39
40$debug = $ENV{'GEN_SHRFLS_DEBUG'};
41
42print "gen_shrfls.pl Rev. 18-Dec-2003\n" if $debug;
43
44if ($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 $debug > 1;
54}
55
56$cc_cmd = shift @ARGV;
57
58# Someday, we'll have $GetSyI built into perl . . .
59$isvax = `\$ Write Sys\$Output \(F\$GetSyI(\"HW_MODEL\") .LE. 1024 .AND. F\$GetSyI(\"HW_MODEL\") .GT. 0\)`;
60chomp $isvax;
61print "\$isvax: \\$isvax\\\n" if $debug;
62
63print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
64$docc = ($cc_cmd !~ /^~~/);
65print "\$docc = $docc\n" if $debug;
66
67if ($docc) {
68 if (-f 'perl.h') { $dir = '[]'; }
69 elsif (-f '[-]perl.h') { $dir = '[-]'; }
70 else { die "$0: Can't find perl.h\n"; }
71
72 $use_threads = $use_mymalloc = $case_about_case = $debugging_enabled = 0;
73 $hide_mymalloc = $isgcc = $use_perlio = 0;
74
75 # Go see what is enabled in config.sh
76 $config = $dir . "config.sh";
77 open CONFIG, "< $config";
78 while(<CONFIG>) {
79 $use_threads++ if /usethreads='(define|yes|true|t|y|1)'/i;
80 $use_mymalloc++ if /usemymalloc='(define|yes|true|t|y|1)'/i;
81 $care_about_case++ if /d_vms_case_sensitive_symbols='(define|yes|true|t|y|1)'/i;
82 $debugging_enabled++ if /usedebugging_perl='(define|yes|true|t|y|1)'/i;
83 $hide_mymalloc++ if /embedmymalloc='(define|yes|true|t|y|1)'/i;
84 $isgcc++ if /gccversion='[^']/;
85 $use_perlio++ if /useperlio='(define|yes|true|t|y|1)'/i;
86 }
87 close CONFIG;
88
89 # put quotes back onto defines - they were removed by DCL on the way in
90 if (($prefix,$defines,$suffix) =
91 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
92 $defines =~ s/^\((.*)\)$/$1/;
93 $debugging_enabled ||= $defines =~ /\bDEBUGGING\b/;
94 @defines = split(/,/,$defines);
95 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
96 . ')' . $suffix;
97 }
98 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
99
100 # check for gcc - if present, we'll need to use MACRO hack to
101 # define global symbols for shared variables
102
103 print "\$isgcc: $isgcc\n" if $debug;
104 print "\$debugging_enabled: $debugging_enabled\n" if $debug;
105
106}
107else {
108 ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
109 $isgcc = $cc_cmd =~ /case_hack/i
110 or 0; # for nice debug output
111 $debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
112 print "\$isgcc: \\$isgcc\\\n" if $debug;
113 print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
114 print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
115}
116
117$objsuffix = shift @ARGV;
118print "\$objsuffix: \\$objsuffix\\\n" if $debug;
119$dbgprefix = shift @ARGV;
120print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
121$olbsuffix = shift @ARGV;
122print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
123$libperl = "${dbgprefix}libperl$olbsuffix";
124$extnames = shift @ARGV;
125print "\$extnames: \\$extnames\\\n" if $debug;
126$rtlopt = shift @ARGV;
127print "\$rtlopt: \\$rtlopt\\\n" if $debug;
128
129sub scan_var {
130 my($line) = @_;
131 my($const) = $line =~ /^EXTCONST/;
132
133 print "\tchecking for global variable\n" if $debug > 1;
134 $line =~ s/\s*EXT/EXT/;
135 $line =~ s/INIT\s*\(.*\)//;
136 $line =~ s/\[.*//;
137 $line =~ s/=.*//;
138 $line =~ s/\W*;?\s*$//;
139 $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
140 print "\tfiltered to \\$line\\\n" if $debug > 1;
141 if ($line =~ /(\w+)$/) {
142 print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
143 if ($const) { $cvars{$1}++; }
144 else { $vars{$1}++; }
145 }
146}
147
148sub scan_func {
149 my @lines = split /;/, @_[0];
150
151 for my $line (@lines) {
152 print "\tchecking for global routine\n" if $debug > 1;
153 $line =~ s/\b(IV|Off_t|Size_t|SSize_t|void)\b//i;
154 if ( $line =~ /(\w+)\s*\(/ ) {
155 print "\troutine name is \\$1\\\n" if $debug > 1;
156 if ($1 eq 'main' || $1 eq 'perl_init_ext' || $1 eq '__attribute__format__'
157 || $1 eq 'sizeof' || (($1 eq 'Perl_stashpv_hvname_match') && ! $use_threads)) {
158 print "\tskipped\n" if $debug > 1;
159 }
160 else { $fcns{$1}++ }
161 }
162 }
163}
164
165# Go add some right up front if we need 'em
166if ($use_mymalloc) {
167 $fcns{'Perl_malloc'}++;
168 $fcns{'Perl_calloc'}++;
169 $fcns{'Perl_realloc'}++;
170 $fcns{'Perl_mfree'}++;
171}
172
173if ($use_perlio) {
174 $preprocess_list = "${dir}perl.h+${dir}perlapi.h,${dir}perliol.h";
175} else {
176 $preprocess_list = "${dir}perl.h+${dir}perlapi.h";
177}
178
179$used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
180if ($docc) {
181 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output $preprocess_list|")
182 or die "$0: Can't preprocess $preprocess_list: $!\n";
183}
184else {
185 open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
186}
187%checkh = map { $_,1 } qw( thread bytecode byterun proto perlapi perlio perlvars intrpvar thrdvar );
188$ckfunc = 0;
189LINE: while (<CPP>) {
190 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
191 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
192 print "vms_proto>> $_" if $debug > 2;
193 if (/^\s*EXT/) { &scan_var($_); }
194 else { &scan_func($_); }
195 last LINE unless defined($_ = <CPP>);
196 }
197 print "vmsish.h>> $_" if $debug > 2;
198 if (/^\s*EXT/) { &scan_var($_); }
199 last LINE unless defined($_ = <CPP>);
200 }
201 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
202 print "opcode.h>> $_" if $debug > 2;
203 if (/^OP \*\s/) { &scan_func($_); }
204 if (/^\s*EXT/) { &scan_var($_); }
205 last LINE unless defined($_ = <CPP>);
206 }
207 # Check for transition to new header file
208 if (/^# \d+ "(\S+)"/) {
209 my $spec = $1;
210 # Pull name from library module or header filespec
211 $spec =~ /^(\w+)$/ or $spec =~ /(\w+)\.h/i;
212 my $name = lc $1;
213 $name = 'perlio' if $name eq 'perliol';
214 $ckfunc = exists $checkh{$name} ? 1 : 0;
215 $scanname = $name if $ckfunc;
216 print "Header file transition: ckfunc = $ckfunc for $name.h\n" if $debug > 1;
217 }
218 if ($ckfunc) {
219 print "$scanname>> $_" if $debug > 2;
220 if (/^\s*EXT/) { &scan_var($_); }
221 else { &scan_func($_); }
222 }
223 else {
224 print $_ if $debug > 3 && ($debug > 5 || length($_));
225 if (/^\s*EXT/) { &scan_var($_); }
226 }
227}
228close CPP;
229
230while (<DATA>) {
231 next if /^#/;
232 s/\s+#.*\n//;
233 next if /^\s*$/;
234 ($key,$array) = split('=',$_);
235 if ($array eq 'vars') { $key = "PL_$key"; }
236 else { $key = "Perl_$key"; }
237 print "Adding $key to \%$array list\n" if $debug > 1;
238 ${$array}{$key}++;
239}
240if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
241foreach (split /\s+/, $extnames) {
242 my($pkgname) = $_;
243 $pkgname =~ s/::/__/g;
244 $fcns{"boot_$pkgname"}++;
245 print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
246}
247
248# Eventually, we'll check against existing copies here, so we can add new
249# symbols to an existing options file in an upwardly-compatible manner.
250
251$marord++;
252open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
253 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
254if ($isvax) {
255 open(MAR,">${dir}perlshr_gbl${marord}.mar")
256 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
257 print MAR "\t.title perlshr_gbl$marord\n";
258}
259
260unless ($isgcc) {
261 print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
262 print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
263}
264print OPTBLD "case_sensitive=yes\n" if $care_about_case;
265foreach $var (sort (keys %vars,keys %cvars)) {
266 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
267 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
268 # This hack brought to you by the lack of a globaldef in gcc.
269 if ($isgcc) {
270 if ($count++ > 200) { # max 254 psects/file
271 print MAR "\t.end\n";
272 close MAR;
273 $marord++;
274 open(MAR,">${dir}perlshr_gbl${marord}.mar")
275 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
276 print MAR "\t.title perlshr_gbl$marord\n";
277 $count = 0;
278 }
279 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
280 print MAR "\t${var}:: .blkl 1\n";
281 }
282}
283
284print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
285foreach $func (sort keys %fcns) {
286 if ($isvax) {
287 print MAR "\t.transfer $func\n";
288 print MAR "\t.mask $func\n";
289 print MAR "\tjmp G\^${func}+2\n";
290 }
291 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
292}
293if ($isvax) {
294 print MAR "\t.end\n";
295 close MAR;
296}
297
298open(OPTATTR,">${dir}perlshr_attr.opt")
299 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
300if ($isgcc) {
301 foreach $var (sort keys %cvars) {
302 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
303 }
304 foreach $var (sort keys %vars) {
305 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
306 }
307}
308else {
309 print OPTATTR "! No additional linker directives are needed when using DECC\n";
310}
311close OPTATTR;
312
313$incstr = 'PERL,GLOBALS';
314if ($isvax) {
315 $drvrname = "Compile_shrmars.tmp_".time;
316 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
317 print DRVR "\$ Set NoOn\n";
318 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
319 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
320 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
321 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
322 print DRVR "\$ Set Verify\n";
323 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
324 do {
325 push(@symfiles,"perlshr_gbl$marord");
326 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
327 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
328 } while (--$marord);
329 # We had to have a working miniperl to run this program; it's probably the
330 # one we just built. It depended on LibPerl, which will be changed when
331 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
332 # and so, therefore, will all of its dependents . . .
333 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
334 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
335 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
336 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
337 close DRVR;
338}
339
340# Initial hack to permit building of compatible shareable images for a
341# given version of Perl.
342if ($ENV{PERLSHR_USE_GSMATCH}) {
343 if ($ENV{PERLSHR_USE_GSMATCH} eq 'INCLUDE_COMPILE_OPTIONS') {
344 # Build up a major ID. Since it can only be 8 bits, we encode the version
345 # number in the top four bits and use the bottom four for build options
346 # that'll cause incompatibilities
347 ($ver, $sub) = $] =~ /\.(\d\d\d)(\d\d)/;
348 $ver += 0; $sub += 0;
349 $gsmatch = ($sub >= 50) ? "equal" : "lequal"; # Force an equal match for
350 # dev, but be more forgiving
351 # for releases
352
353 $ver *=16;
354 $ver += 8 if $debugging_enabled; # If DEBUGGING is set
355 $ver += 4 if $use_threads; # if we're threaded
356 $ver += 2 if $use_mymalloc; # if we're using perl's malloc
357 print OPTBLD "GSMATCH=$gsmatch,$ver,$sub\n";
358 }
359 else {
360 my $major = int($] * 1000) & 0xFF; # range 0..255
361 my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
362 print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
363 }
364 print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
365 map(",$_$objsuffix",@symfiles), "\n";
366}
367elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
368# Include object modules and RTLs in options file
369# Linker wants /Include and /Library on different lines
370print OPTBLD "$libperl/Include=($incstr)\n";
371print OPTBLD "$libperl/Library\n";
372open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
373while (<RTLOPT>) { print OPTBLD; }
374close RTLOPT;
375close OPTBLD;
376
377exec "\$ \@$drvrname" if $isvax;
378
379
380__END__
381
382# Oddball cases, so we can keep the perl.h scan above simple
383regkind=vars # declared in regcomp.h
384simple=vars # declared in regcomp.h
385varies=vars # declared in regcomp.h
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