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perl 5.000
[perl5.git] / vms / gen_shrfls.pl
CommitLineData
a0d0e21e
LW
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# $objsuffix - file type (including '.') used for object files.
9#
10# Output:
11# PerlShr_Attr.Opt - linker options file which speficies that global vars
12# be placed in NOSHR,WRT psects. Use when linking any object files
13# against PerlShr.Exe, since cc places global vars in SHR,WRT psects
14# by default.
15# PerlShr_Sym.Opt - declares universal symbols for PerlShr.Exe
16# Perlshr_Gbl*.Mar, Perlshr_Gbl*.Obj (VAX only) - declares global symbols
17# for global vars (done here because gcc can't globaldef) and creates
18# transfer vectors for routines on a VAX.
19# PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
20# to the linker when building PerlShr.Exe.
21#
22# To do:
23# - figure out a good way to collect global vars in one psect, given that
24# we can't use globaldef because of gcc.
25# - then, check for existing files and preserve symbol and transfer vector
26# order for upward compatibility
27# - then, add GSMATCH to options file - but how do we insure that new
28# library has everything old one did
29# (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
30#
31# Author: Charles Bailey bailey@genetics.upenn.edu
32# Revised: 21-Sep-1994
33
34require 5.000;
35
36$debug = $ENV{'GEN_SHRFLS_DEBUG'};
37$cc_cmd = shift @ARGV;
38print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
39$docc = ($cc_cmd !~ /~~NOCC~~/);
40print "\$docc = $docc\n" if $debug;
41
42if ($docc) {
43 # put quotes back onto defines - they were removed by DCL on the way in
44 if (($prefix,$defines,$suffix) =
45 ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
46 $defines =~ s/^\((.*)\)$/$1/;
47 @defines = split(/,/,$defines);
48 $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
49 . ')' . $suffix;
50 }
51 print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
52
53 if (-f 'perl.h') { $dir = '[]'; }
54 elsif (-f '[-]perl.h') { $dir = '[-]'; }
55 else { die "$0: Can't find perl.h\n"; }
56}
57else { ($cpp_file) = ($cc_cmd =~ /~~NOCC~~(.*)/) }
58
59$objsuffix = shift @ARGV;
60print "\$objsuffix: \\$objsuffix\\\n" if $debug;
61
62# Someday, we'll have $GetSyI built into perl . . .
63$isvax = `\$ Write Sys\$Output F\$GetSyI(\"HW_MODEL\")` <= 1024;
64print "\$isvax: \\$isvax\\\n" if $debug;
65
66sub scan_var {
67 my($line) = @_;
68
69 print "\tchecking for global variable\n" if $debug;
70 $line =~ s/INIT\(.*\)//;
71 $line =~ s/\[.*//;
72 $line =~ s/=.*//;
73 $line =~ s/\W*;?\s*$//;
74 print "\tfiltered to \\$line\\\n" if $debug;
75 if ($line =~ /(\w+)$/) {
76 print "\tvar name is \\$1\\\n" if $debug;
77 $vars{$1}++;
78 }
79}
80
81sub scan_func {
82 my($line) = @_;
83
84 print "\tchecking for global routine\n" if $debug;
85 if ( /(\w+)\s+\(/ ) {
86 print "\troutine name is \\$1\\\n" if $debug;
87 if ($1 eq 'main' || $1 eq 'perl_init_ext') {
88 print "\tskipped\n" if $debug;
89 }
90 else { $funcs{$1}++ }
91 }
92}
93
94if ($docc) {
95 open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
96 or die "$0: Can't preprocess ${dir}perl.h: $!\n";
97}
98else {
99 open(CPP,"$cpp_file") or die "$0: Can't read $cpp_file: $!\n";
100}
101LINE: while (<CPP>) {
102 while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
103 while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
104 print "vms_proto>> $_" if $debug;
105 &scan_func($_);
106 if (/^EXT/) { &scan_var($_); }
107 last LINE unless $_ = <CPP>;
108 }
109 print "vmsish.h>> $_" if $debug;
110 if (/^EXT/) { &scan_var($_); }
111 last LINE unless $_ = <CPP>;
112 }
113 while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
114 print "opcode.h>> $_" if $debug;
115 if (/^OP \*\s/) { &scan_func($_); }
116 if (/^EXT/) { &scan_var($_); }
117 last LINE unless $_ = <CPP>;
118 }
119 while (/^#.*proto\.h/i .. /^#.*perl\.h/i) {
120 print "proto.h>> $_" if $debug;
121 &scan_func($_);
122 if (/^EXT/) { &scan_var($_); }
123 last LINE unless $_ = <CPP>;
124 }
125 print $_ if $debug;
126 if (/^EXT/) { &scan_var($_); }
127}
128close CPP;
129while (<DATA>) {
130 next if /^#/;
131 s/\s+#.*\n//;
132 ($key,$array) = split('=',$_);
133 print "Adding $key to \%$array list\n" if $debug;
134 ${$array}{$key}++;
135}
136
137# Eventually, we'll check against existing copies here, so we can add new
138# symbols to an existing options file in an upwardly-compatible manner.
139
140$marord++;
141open(OPTSYM,">${dir}perlshr_sym.opt")
142 or die "$0: Can't write to ${dir}perlshr_sym.opt: $!\n";
143open(OPTATTR,">${dir}perlshr_attr.opt")
144 or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
145if ($isvax) {
146 open(MAR,">${dir}perlshr_gbl${marord}.mar")
147 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
148}
149print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
150foreach $var (sort keys %vars) {
151 print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
152 if ($isvax) { print OPTSYM "UNIVERSAL=$var\n"; }
153 else { print OPTSYM "SYMBOL_VECTOR=($var=DATA)\n"; }
154 if ($isvax) {
155 if ($count++ > 200) { # max 254 psects/file
156 print MAR "\t.end\n";
157 close MAR;
158 $marord++;
159 open(MAR,">${dir}perlshr_gbl${marord}.mar")
160 or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
161 $count = 0;
162 }
163 # This hack brought to you by the lack of a globaldef in gcc.
164 print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
165 print MAR "\t${var}:: .blkl 1\n";
166 }
167}
168
169print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
170foreach $func (sort keys %funcs) {
171 if ($isvax) {
172 print MAR "\t.transfer $func\n";
173 print MAR "\t.mask $func\n";
174 print MAR "\tjmp L\^${func}+2\n";
175 }
176 else { print OPTSYM "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
177}
178
179close OPTSYM;
180close OPTATTR;
181if ($isvax) {
182 print MAR "\t.end\n";
183 close MAR;
184 open (GBLOPT,">PerlShr_Gbl.Opt") or die "$0: Can't write to PerlShr_Gbl.Opt: $!\n";
185 $drvrname = "Compile_shrmars.tmp_".time;
186 open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
187 print DRVR "\$ Set NoOn\n";
188 print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
189 print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
190 print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
191 print DRVR "\$ Set Verify\n";
192 do {
193 print GBLOPT "PerlShr_Gbl${marord}$objsuffix\n";
194 print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
195 } while (--$marord);
196 print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
197 close DRVR;
198 close GBLOPT;
199 exec "\$ \@$drvrname";
200}
201__END__
202
203# Oddball cases, so we can keep the perl.h scan above simple
204error=vars # declared in perl.h only when DOINIT defined by INTERN.h
205rcsid=vars # declared in perl.c
206regarglen=vars # declared in regcomp.h
207regdummy=vars # declared in regcomp.h
208regkind=vars # declared in regcomp.h
209simple=vars # declared in regcomp.h
210varies=vars # declared in regcomp.h
211watchaddr=vars # declared in run.c
212watchok=vars # declared in run.c
213yychar=vars # generated by byacc in perly.c
214yycheck=vars # generated by byacc in perly.c
215yydebug=vars # generated by byacc in perly.c
216yydefred=vars # generated by byacc in perly.c
217yydgoto=vars # generated by byacc in perly.c
218yyerrflag=vars # generated by byacc in perly.c
219yygindex=vars # generated by byacc in perly.c
220yylen=vars # generated by byacc in perly.c
221yylhs=vars # generated by byacc in perly.c
222yylval=vars # generated by byacc in perly.c
223yyname=vars # generated by byacc in perly.c
224yynerrs=vars # generated by byacc in perly.c
225yyrindex=vars # generated by byacc in perly.c
226yyrule=vars # generated by byacc in perly.c
227yysindex=vars # generated by byacc in perly.c
228yytable=vars # generated by byacc in perly.c
229yyval=vars # generated by byacc in perly.c