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This is my patch patch.1n for perl5.001.
[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# $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
13# must be linked
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14#
15# Output:
16# PerlShr_Attr.Opt - linker options file which speficies that global vars
17# be placed in NOSHR,WRT psects. Use when linking any object files
18# against PerlShr.Exe, since cc places global vars in SHR,WRT psects
19# by default.
748a9306 20# PerlShr_Bld.Opt - declares universal symbols for PerlShr.Exe
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21# Perlshr_Gbl*.Mar, Perlshr_Gbl*.Obj (VAX only) - declares global symbols
22# for global vars (done here because gcc can't globaldef) and creates
23# transfer vectors for routines on a VAX.
24# PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
25# to the linker when building PerlShr.Exe.
26#
27# To do:
28# - figure out a good way to collect global vars in one psect, given that
29# we can't use globaldef because of gcc.
30# - then, check for existing files and preserve symbol and transfer vector
31# order for upward compatibility
32# - then, add GSMATCH to options file - but how do we insure that new
33# library has everything old one did
34# (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
35#
36# Author: Charles Bailey bailey@genetics.upenn.edu
748a9306 37# Revised: 01-Mar-1995
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38
39require 5.000;
40
41$debug = $ENV{'GEN_SHRFLS_DEBUG'};
42$cc_cmd = shift @ARGV;
43print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
44$docc = ($cc_cmd !~ /~~NOCC~~/);
45print "\$docc = $docc\n" if $debug;
46
47if ($docc) {
48 # put quotes back onto defines - they were removed by DCL on the way in
49 if (($prefix,$defines,$suffix) =
50 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
51 $defines =~ s/^\((.*)\)$/$1/;
52 @defines = split(/,/,$defines);
53 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
54 . ')' . $suffix;
55 }
56 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
57
58 if (-f 'perl.h') { $dir = '[]'; }
59 elsif (-f '[-]perl.h') { $dir = '[-]'; }
60 else { die "$0: Can't find perl.h\n"; }
61}
62else { ($cpp_file) = ($cc_cmd =~ /~~NOCC~~(.*)/) }
63
64$objsuffix = shift @ARGV;
65print "\$objsuffix: \\$objsuffix\\\n" if $debug;
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66$dbgprefix = shift @ARGV;
67print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
68$olbsuffix = shift @ARGV;
69print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
70$libperl = "${dbgprefix}libperl$olbsuffix";
71$extnames = shift @ARGV;
72print "\$extnames: \\$extnames\\\n" if $debug;
73$rtlopt = shift @ARGV;
74print "\$rtlopt: \\$rtlopt\\\n" if $debug;
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75
76# Someday, we'll have $GetSyI built into perl . . .
77$isvax = `\$ Write Sys\$Output F\$GetSyI(\"HW_MODEL\")` <= 1024;
78print "\$isvax: \\$isvax\\\n" if $debug;
79
80sub scan_var {
81 my($line) = @_;
82
748a9306 83 print "\tchecking for global variable\n" if $debug > 1;
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84 $line =~ s/INIT\(.*\)//;
85 $line =~ s/\[.*//;
86 $line =~ s/=.*//;
87 $line =~ s/\W*;?\s*$//;
748a9306 88 print "\tfiltered to \\$line\\\n" if $debug > 1;
a0d0e21e 89 if ($line =~ /(\w+)$/) {
748a9306 90 print "\tvar name is \\$1\\\n" if $debug > 1;
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91 $vars{$1}++;
92 }
93}
94
95sub scan_func {
96 my($line) = @_;
97
748a9306 98 print "\tchecking for global routine\n" if $debug > 1;
a0d0e21e 99 if ( /(\w+)\s+\(/ ) {
748a9306 100 print "\troutine name is \\$1\\\n" if $debug > 1;
a0d0e21e 101 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
748a9306 102 print "\tskipped\n" if $debug > 1;
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103 }
104 else { $funcs{$1}++ }
105 }
106}
107
108if ($docc) {
109 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
110 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
111}
112else {
113 open(CPP,"$cpp_file") or die "$0: Can't read $cpp_file: $!\n";
114}
115LINE: while (<CPP>) {
116 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
117 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
748a9306 118 print "vms_proto>> $_" if $debug > 2;
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119 &scan_func($_);
120 if (/^EXT/) { &scan_var($_); }
121 last LINE unless $_ = <CPP>;
122 }
748a9306 123 print "vmsish.h>> $_" if $debug > 2;
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124 if (/^EXT/) { &scan_var($_); }
125 last LINE unless $_ = <CPP>;
126 }
127 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
748a9306 128 print "opcode.h>> $_" if $debug > 2;
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129 if (/^OP \*\s/) { &scan_func($_); }
130 if (/^EXT/) { &scan_var($_); }
131 last LINE unless $_ = <CPP>;
132 }
133 while (/^#.*proto\.h/i .. /^#.*perl\.h/i) {
748a9306 134 print "proto.h>> $_" if $debug > 2;
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135 &scan_func($_);
136 if (/^EXT/) { &scan_var($_); }
137 last LINE unless $_ = <CPP>;
138 }
748a9306 139 print $_ if $debug > 3;
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140 if (/^EXT/) { &scan_var($_); }
141}
142close CPP;
143while (<DATA>) {
144 next if /^#/;
145 s/\s+#.*\n//;
146 ($key,$array) = split('=',$_);
748a9306 147 print "Adding $key to \%$array list\n" if $debug > 1;
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148 ${$array}{$key}++;
149}
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150foreach (split /\s+/, $extnames) {
151 my($pkgname) = $_;
152 $pkgname =~ s/::/__/g;
153 $funcs{"boot_$pkgname"}++;
154 print "Adding boot_$pkgname to \%funcs (for extension $_)\n" if $debug;
155}
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156
157# Eventually, we'll check against existing copies here, so we can add new
158# symbols to an existing options file in an upwardly-compatible manner.
159
160$marord++;
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161open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
162 or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
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163open(OPTATTR,">${dir}perlshr_attr.opt")
164 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
165if ($isvax) {
166 open(MAR,">${dir}perlshr_gbl${marord}.mar")
167 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306 168 print MAR "\t.title perlshr_gbl$marord\n";
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169}
170print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
171foreach $var (sort keys %vars) {
172 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
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173 if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
174 else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
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175 if ($isvax) {
176 if ($count++ > 200) { # max 254 psects/file
177 print MAR "\t.end\n";
178 close MAR;
179 $marord++;
180 open(MAR,">${dir}perlshr_gbl${marord}.mar")
181 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306 182 print MAR "\t.title perlshr_gbl$marord\n";
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183 $count = 0;
184 }
185 # This hack brought to you by the lack of a globaldef in gcc.
186 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
187 print MAR "\t${var}:: .blkl 1\n";
188 }
189}
190
191print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
192foreach $func (sort keys %funcs) {
193 if ($isvax) {
194 print MAR "\t.transfer $func\n";
195 print MAR "\t.mask $func\n";
196 print MAR "\tjmp L\^${func}+2\n";
197 }
748a9306 198 else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
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199}
200
a0d0e21e 201close OPTATTR;
748a9306 202$incstr = 'perl,globals';
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203if ($isvax) {
204 print MAR "\t.end\n";
205 close MAR;
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206 $drvrname = "Compile_shrmars.tmp_".time;
207 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
208 print DRVR "\$ Set NoOn\n";
209 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
210 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
211 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
748a9306 212 print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
a0d0e21e 213 print DRVR "\$ Set Verify\n";
748a9306 214 print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
a0d0e21e 215 do {
748a9306 216 $incstr .= ",perlshr_gbl$marord";
a0d0e21e 217 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
748a9306 218 print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
a0d0e21e 219 } while (--$marord);
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220 # We had to have a working miniperl to run this program; it's probably the
221 # one we just built. It depended on LibPerl, which will be changed when
222 # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
223 # and so, therefore, will all of its dependents . . .
224 # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
225 # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
a0d0e21e 226 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
748a9306 227 print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
a0d0e21e 228 close DRVR;
a0d0e21e 229}
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230
231# Include object modules and RTLs in options file
232# Linker wants /Include and /Library on different lines
233print OPTBLD "$libperl/Include=($incstr)\n";
234print OPTBLD "$libperl/Library\n";
235open(RTLOPT,$rtlopt) or die "$0: Can't read $rtlopt: $!\n";
236while (<RTLOPT>) { print OPTBLD; }
237close RTLOPT;
238close OPTBLD;
239
240exec "\$ \@$drvrname" if $isvax;
241
242
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243__END__
244
245# Oddball cases, so we can keep the perl.h scan above simple
246error=vars # declared in perl.h only when DOINIT defined by INTERN.h
247rcsid=vars # declared in perl.c
248regarglen=vars # declared in regcomp.h
249regdummy=vars # declared in regcomp.h
250regkind=vars # declared in regcomp.h
251simple=vars # declared in regcomp.h
252varies=vars # declared in regcomp.h
253watchaddr=vars # declared in run.c
254watchok=vars # declared in run.c
255yychar=vars # generated by byacc in perly.c
256yycheck=vars # generated by byacc in perly.c
257yydebug=vars # generated by byacc in perly.c
258yydefred=vars # generated by byacc in perly.c
259yydgoto=vars # generated by byacc in perly.c
260yyerrflag=vars # generated by byacc in perly.c
261yygindex=vars # generated by byacc in perly.c
262yylen=vars # generated by byacc in perly.c
263yylhs=vars # generated by byacc in perly.c
264yylval=vars # generated by byacc in perly.c
265yyname=vars # generated by byacc in perly.c
266yynerrs=vars # generated by byacc in perly.c
267yyrindex=vars # generated by byacc in perly.c
268yyrule=vars # generated by byacc in perly.c
269yysindex=vars # generated by byacc in perly.c
270yytable=vars # generated by byacc in perly.c
271yyval=vars # generated by byacc in perly.c