1 | # Create global symbol declarations, transfer vector, and
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2 | # linker options files for PerlShr.
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3 | #
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4 | # Input:
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5 | # $cflags - command line qualifiers passed to cc when preprocesing perl.h
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6 | # Note: A rather simple-minded attempt is made to restore quotes to
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7 | # a /Define clause - use with care.
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8 | # $objsuffix - file type (including '.') used for object files.
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9 | # $libperl - Perl object library.
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10 | # $extnames - package names for static extensions (used to generate
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11 | # linker options file entries for boot functions)
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12 | # $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
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13 | # must be linked
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14 | #
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15 | # Output:
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16 | # PerlShr_Attr.Opt - linker options file which speficies that global vars
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17 | # be placed in NOSHR,WRT psects. Use when linking any object files
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18 | # against PerlShr.Exe, since cc places global vars in SHR,WRT psects
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19 | # by default.
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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
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22 | # for global vars (done here because gcc can't globaldef) and creates
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23 | # transfer vectors for routines on a VAX.
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24 | # PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
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25 | # to the linker when building PerlShr.Exe.
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26 | #
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27 | # To do:
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28 | # - figure out a good way to collect global vars in one psect, given that
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29 | # we can't use globaldef because of gcc.
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30 | # - then, check for existing files and preserve symbol and transfer vector
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31 | # order for upward compatibility
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32 | # - then, add GSMATCH to options file - but how do we insure that new
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33 | # library has everything old one did
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34 | # (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
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35 | #
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36 | # Author: Charles Bailey bailey@newman.upenn.edu
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37 |
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38 | require 5.000;
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39 |
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40 | $debug = $ENV{'GEN_SHRFLS_DEBUG'};
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41 |
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42 | print "gen_shrfls.pl Rev. 18-Dec-2003\n" if $debug;
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43 |
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44 | if ($ARGV[0] eq '-f') {
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45 | open(INP,$ARGV[1]) or die "Can't read input file $ARGV[1]: $!\n";
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46 | print "Input taken from file $ARGV[1]\n" if $debug;
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47 | @ARGV = ();
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48 | while (<INP>) {
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49 | chomp;
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50 | push(@ARGV,split(/\|/,$_));
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51 | }
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52 | close INP;
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53 | print "Read input data | ",join(' | ',@ARGV)," |\n" if $debug > 1;
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54 | }
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55 |
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56 | $cc_cmd = shift @ARGV;
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57 |
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58 | # Someday, we'll have $GetSyI built into perl . . .
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59 | $isvax = `\$ Write Sys\$Output \(F\$GetSyI(\"HW_MODEL\") .LE. 1024 .AND. F\$GetSyI(\"HW_MODEL\") .GT. 0\)`;
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60 | chomp $isvax;
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61 | print "\$isvax: \\$isvax\\\n" if $debug;
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62 |
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63 | print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
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64 | $docc = ($cc_cmd !~ /^~~/);
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65 | print "\$docc = $docc\n" if $debug;
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66 |
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67 | if ($docc) {
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68 | if (-f 'perl.h') { $dir = '[]'; }
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69 | elsif (-f '[-]perl.h') { $dir = '[-]'; }
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70 | else { die "$0: Can't find perl.h\n"; }
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71 |
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72 | $use_threads = $use_mymalloc = $case_about_case = $debugging_enabled = 0;
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73 | $hide_mymalloc = $isgcc = $use_perlio = 0;
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74 |
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75 | # Go see what is enabled in config.sh
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76 | $config = $dir . "config.sh";
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77 | open CONFIG, "< $config";
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78 | while(<CONFIG>) {
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79 | $use_threads++ if /usethreads='(define|yes|true|t|y|1)'/i;
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80 | $use_mymalloc++ if /usemymalloc='(define|yes|true|t|y|1)'/i;
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81 | $care_about_case++ if /d_vms_case_sensitive_symbols='(define|yes|true|t|y|1)'/i;
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82 | $debugging_enabled++ if /usedebugging_perl='(define|yes|true|t|y|1)'/i;
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83 | $hide_mymalloc++ if /embedmymalloc='(define|yes|true|t|y|1)'/i;
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84 | $isgcc++ if /gccversion='[^']/;
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85 | $use_perlio++ if /useperlio='(define|yes|true|t|y|1)'/i;
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86 | }
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87 | close CONFIG;
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88 |
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89 | # put quotes back onto defines - they were removed by DCL on the way in
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90 | if (($prefix,$defines,$suffix) =
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91 | ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
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92 | $defines =~ s/^\((.*)\)$/$1/;
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93 | $debugging_enabled ||= $defines =~ /\bDEBUGGING\b/;
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94 | @defines = split(/,/,$defines);
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95 | $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
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96 | . ')' . $suffix;
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97 | }
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98 | print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
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99 |
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100 | # check for gcc - if present, we'll need to use MACRO hack to
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101 | # define global symbols for shared variables
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102 |
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103 | print "\$isgcc: $isgcc\n" if $debug;
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104 | print "\$debugging_enabled: $debugging_enabled\n" if $debug;
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105 |
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106 | }
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107 | else {
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108 | ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
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109 | $isgcc = $cc_cmd =~ /case_hack/i
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110 | or 0; # for nice debug output
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111 | $debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
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112 | print "\$isgcc: \\$isgcc\\\n" if $debug;
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113 | print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
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114 | print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
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115 | }
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116 |
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117 | $objsuffix = shift @ARGV;
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118 | print "\$objsuffix: \\$objsuffix\\\n" if $debug;
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119 | $dbgprefix = shift @ARGV;
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120 | print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
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121 | $olbsuffix = shift @ARGV;
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122 | print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
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123 | $libperl = "${dbgprefix}libperl$olbsuffix";
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124 | $extnames = shift @ARGV;
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125 | print "\$extnames: \\$extnames\\\n" if $debug;
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126 | $rtlopt = shift @ARGV;
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127 | print "\$rtlopt: \\$rtlopt\\\n" if $debug;
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128 |
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129 | sub scan_var {
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130 | my($line) = @_;
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131 | my($const) = $line =~ /^EXTCONST/;
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132 |
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133 | print "\tchecking for global variable\n" if $debug > 1;
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134 | $line =~ s/\s*EXT/EXT/;
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135 | $line =~ s/INIT\s*\(.*\)//;
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136 | $line =~ s/\[.*//;
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137 | $line =~ s/=.*//;
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138 | $line =~ s/\W*;?\s*$//;
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139 | $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
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140 | print "\tfiltered to \\$line\\\n" if $debug > 1;
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141 | if ($line =~ /(\w+)$/) {
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142 | print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
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143 | if ($const) { $cvars{$1}++; }
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144 | else { $vars{$1}++; }
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145 | }
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146 | }
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147 |
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148 | sub scan_func {
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149 | my @lines = split /;/, @_[0];
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150 |
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151 | for my $line (@lines) {
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152 | print "\tchecking for global routine\n" if $debug > 1;
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153 | $line =~ s/\b(IV|Off_t|Size_t|SSize_t|void)\b//i;
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154 | if ( $line =~ /(\w+)\s*\(/ ) {
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155 | print "\troutine name is \\$1\\\n" if $debug > 1;
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156 | if ($1 eq 'main' || $1 eq 'perl_init_ext' || $1 eq '__attribute__format__'
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157 | || $1 eq 'sizeof' || (($1 eq 'Perl_stashpv_hvname_match') && ! $use_threads)) {
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158 | print "\tskipped\n" if $debug > 1;
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159 | }
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160 | else { $fcns{$1}++ }
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161 | }
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162 | }
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163 | }
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164 |
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165 | # Go add some right up front if we need 'em
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166 | if ($use_mymalloc) {
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167 | $fcns{'Perl_malloc'}++;
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168 | $fcns{'Perl_calloc'}++;
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169 | $fcns{'Perl_realloc'}++;
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170 | $fcns{'Perl_mfree'}++;
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171 | }
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172 |
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173 | if ($use_perlio) {
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174 | $preprocess_list = "${dir}perl.h+${dir}perlapi.h,${dir}perliol.h";
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175 | } else {
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176 | $preprocess_list = "${dir}perl.h+${dir}perlapi.h";
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177 | }
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178 |
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179 | $used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
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180 | if ($docc) {
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181 | open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output $preprocess_list|")
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182 | or die "$0: Can't preprocess $preprocess_list: $!\n";
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183 | }
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184 | else {
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185 | open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
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186 | }
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187 | %checkh = map { $_,1 } qw( thread bytecode byterun proto perlapi perlio perlvars intrpvar thrdvar );
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188 | $ckfunc = 0;
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189 | LINE: while (<CPP>) {
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190 | while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
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191 | while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
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192 | print "vms_proto>> $_" if $debug > 2;
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193 | if (/^\s*EXT/) { &scan_var($_); }
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194 | else { &scan_func($_); }
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195 | last LINE unless defined($_ = <CPP>);
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196 | }
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197 | print "vmsish.h>> $_" if $debug > 2;
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198 | if (/^\s*EXT/) { &scan_var($_); }
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199 | last LINE unless defined($_ = <CPP>);
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200 | }
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201 | while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
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202 | print "opcode.h>> $_" if $debug > 2;
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203 | if (/^OP \*\s/) { &scan_func($_); }
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204 | if (/^\s*EXT/) { &scan_var($_); }
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205 | last LINE unless defined($_ = <CPP>);
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206 | }
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207 | # Check for transition to new header file
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208 | if (/^# \d+ "(\S+)"/) {
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209 | my $spec = $1;
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210 | # Pull name from library module or header filespec
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211 | $spec =~ /^(\w+)$/ or $spec =~ /(\w+)\.h/i;
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212 | my $name = lc $1;
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213 | $name = 'perlio' if $name eq 'perliol';
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214 | $ckfunc = exists $checkh{$name} ? 1 : 0;
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215 | $scanname = $name if $ckfunc;
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216 | print "Header file transition: ckfunc = $ckfunc for $name.h\n" if $debug > 1;
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217 | }
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218 | if ($ckfunc) {
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219 | print "$scanname>> $_" if $debug > 2;
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220 | if (/^\s*EXT/) { &scan_var($_); }
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221 | else { &scan_func($_); }
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222 | }
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223 | else {
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224 | print $_ if $debug > 3 && ($debug > 5 || length($_));
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225 | if (/^\s*EXT/) { &scan_var($_); }
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226 | }
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227 | }
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228 | close CPP;
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229 |
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230 | while (<DATA>) {
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231 | next if /^#/;
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232 | s/\s+#.*\n//;
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233 | next if /^\s*$/;
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234 | ($key,$array) = split('=',$_);
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235 | if ($array eq 'vars') { $key = "PL_$key"; }
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236 | else { $key = "Perl_$key"; }
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237 | print "Adding $key to \%$array list\n" if $debug > 1;
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238 | ${$array}{$key}++;
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239 | }
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240 | if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
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241 | foreach (split /\s+/, $extnames) {
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242 | my($pkgname) = $_;
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243 | $pkgname =~ s/::/__/g;
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244 | $fcns{"boot_$pkgname"}++;
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245 | print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
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246 | }
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247 |
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248 | # Eventually, we'll check against existing copies here, so we can add new
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249 | # symbols to an existing options file in an upwardly-compatible manner.
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250 |
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251 | $marord++;
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252 | open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
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253 | or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
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254 | if ($isvax) {
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255 | open(MAR,">${dir}perlshr_gbl${marord}.mar")
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256 | or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
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257 | print MAR "\t.title perlshr_gbl$marord\n";
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258 | }
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259 |
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260 | unless ($isgcc) {
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261 | print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
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262 | print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
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263 | }
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264 | print OPTBLD "case_sensitive=yes\n" if $care_about_case;
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265 | foreach $var (sort (keys %vars,keys %cvars)) {
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266 | if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
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267 | else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
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268 | # This hack brought to you by the lack of a globaldef in gcc.
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269 | if ($isgcc) {
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270 | if ($count++ > 200) { # max 254 psects/file
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271 | print MAR "\t.end\n";
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272 | close MAR;
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273 | $marord++;
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274 | open(MAR,">${dir}perlshr_gbl${marord}.mar")
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275 | or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
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276 | print MAR "\t.title perlshr_gbl$marord\n";
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277 | $count = 0;
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278 | }
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279 | print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
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280 | print MAR "\t${var}:: .blkl 1\n";
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281 | }
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282 | }
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283 |
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284 | print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
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285 | foreach $func (sort keys %fcns) {
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286 | if ($isvax) {
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287 | print MAR "\t.transfer $func\n";
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288 | print MAR "\t.mask $func\n";
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289 | print MAR "\tjmp G\^${func}+2\n";
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290 | }
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291 | else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
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292 | }
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293 | if ($isvax) {
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294 | print MAR "\t.end\n";
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295 | close MAR;
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296 | }
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297 |
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298 | open(OPTATTR,">${dir}perlshr_attr.opt")
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299 | or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
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300 | if ($isgcc) {
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301 | foreach $var (sort keys %cvars) {
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302 | print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
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303 | }
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304 | foreach $var (sort keys %vars) {
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305 | print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
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306 | }
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307 | }
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308 | else {
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309 | print OPTATTR "! No additional linker directives are needed when using DECC\n";
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310 | }
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311 | close OPTATTR;
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312 |
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313 | $incstr = 'PERL,GLOBALS';
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314 | if ($isvax) {
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315 | $drvrname = "Compile_shrmars.tmp_".time;
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316 | open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
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317 | print DRVR "\$ Set NoOn\n";
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318 | print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
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319 | print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
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320 | print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
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321 | print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
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322 | print DRVR "\$ Set Verify\n";
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323 | print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
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324 | do {
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325 | push(@symfiles,"perlshr_gbl$marord");
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326 | print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
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327 | print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
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328 | } while (--$marord);
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329 | # We had to have a working miniperl to run this program; it's probably the
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330 | # one we just built. It depended on LibPerl, which will be changed when
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331 | # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
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332 | # and so, therefore, will all of its dependents . . .
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333 | # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
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334 | # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
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335 | print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
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336 | print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
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337 | close DRVR;
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338 | }
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339 |
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340 | # Initial hack to permit building of compatible shareable images for a
|
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341 | # given version of Perl.
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342 | if ($ENV{PERLSHR_USE_GSMATCH}) {
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343 | if ($ENV{PERLSHR_USE_GSMATCH} eq 'INCLUDE_COMPILE_OPTIONS') {
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344 | # Build up a major ID. Since it can only be 8 bits, we encode the version
|
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345 | # number in the top four bits and use the bottom four for build options
|
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346 | # that'll cause incompatibilities
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347 | ($ver, $sub) = $] =~ /\.(\d\d\d)(\d\d)/;
|
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348 | $ver += 0; $sub += 0;
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349 | $gsmatch = ($sub >= 50) ? "equal" : "lequal"; # Force an equal match for
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350 | # dev, but be more forgiving
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351 | # for releases
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352 |
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353 | $ver *=16;
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354 | $ver += 8 if $debugging_enabled; # If DEBUGGING is set
|
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355 | $ver += 4 if $use_threads; # if we're threaded
|
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356 | $ver += 2 if $use_mymalloc; # if we're using perl's malloc
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357 | print OPTBLD "GSMATCH=$gsmatch,$ver,$sub\n";
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358 | }
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359 | else {
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360 | my $major = int($] * 1000) & 0xFF; # range 0..255
|
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361 | my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
|
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362 | print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
|
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363 | }
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364 | print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
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365 | map(",$_$objsuffix",@symfiles), "\n";
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366 | }
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367 | elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
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368 | # Include object modules and RTLs in options file
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369 | # Linker wants /Include and /Library on different lines
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370 | print OPTBLD "$libperl/Include=($incstr)\n";
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371 | print OPTBLD "$libperl/Library\n";
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372 | open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
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373 | while (<RTLOPT>) { print OPTBLD; }
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374 | close RTLOPT;
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375 | close OPTBLD;
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376 |
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377 | exec "\$ \@$drvrname" if $isvax;
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378 |
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379 |
|
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380 | __END__
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381 |
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382 | # Oddball cases, so we can keep the perl.h scan above simple
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383 | regkind=vars # declared in regcomp.h
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384 | simple=vars # declared in regcomp.h
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385 | varies=vars # declared in regcomp.h
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