| 1 | #!/usr/bin/perl -w |
| 2 | |
| 3 | require 5.003; |
| 4 | |
| 5 | sub readsyms (\%$) { |
| 6 | my ($syms, $file) = @_; |
| 7 | %$syms = (); |
| 8 | local (*FILE, $_); |
| 9 | open(FILE, "< $file") |
| 10 | or die "embed.pl: Can't open $file: $!\n"; |
| 11 | while (<FILE>) { |
| 12 | s/[ \t]*#.*//; # Delete comments. |
| 13 | if (/^\s*(\S+)\s*$/) { |
| 14 | $$syms{$1} = 1; |
| 15 | } |
| 16 | } |
| 17 | close(FILE); |
| 18 | } |
| 19 | |
| 20 | readsyms %global, 'global.sym'; |
| 21 | readsyms %interp, 'interp.sym'; |
| 22 | |
| 23 | sub readvars(\%$$) { |
| 24 | my ($syms, $file,$pre) = @_; |
| 25 | %$syms = (); |
| 26 | local (*FILE, $_); |
| 27 | open(FILE, "< $file") |
| 28 | or die "embed.pl: Can't open $file: $!\n"; |
| 29 | while (<FILE>) { |
| 30 | s/[ \t]*#.*//; # Delete comments. |
| 31 | if (/PERLVARI?C?\($pre(\w+)/) { |
| 32 | $$syms{$1} = 1; |
| 33 | } |
| 34 | } |
| 35 | close(FILE); |
| 36 | } |
| 37 | |
| 38 | my %intrp; |
| 39 | my %thread; |
| 40 | |
| 41 | readvars %intrp, 'intrpvar.h','I'; |
| 42 | readvars %thread, 'thrdvar.h','T'; |
| 43 | readvars %globvar, 'perlvars.h','G'; |
| 44 | |
| 45 | foreach my $sym (sort keys %intrp) |
| 46 | { |
| 47 | warn "$sym not in interp.sym\n" unless exists $interp{$sym}; |
| 48 | if (exists $global{$sym}) |
| 49 | { |
| 50 | delete $global{$sym}; |
| 51 | warn "$sym in global.sym as well as interp\n"; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | foreach my $sym (sort keys %globvar) |
| 56 | { |
| 57 | if (exists $global{$sym}) |
| 58 | { |
| 59 | delete $global{$sym}; |
| 60 | warn "$sym in global.sym as well as perlvars.h\n"; |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | foreach my $sym (keys %interp) |
| 65 | { |
| 66 | warn "extra $sym in interp.sym\n" |
| 67 | unless exists $intrp{$sym} || exists $thread{$sym}; |
| 68 | } |
| 69 | |
| 70 | foreach my $sym (sort keys %thread) |
| 71 | { |
| 72 | warn "$sym in intrpvar.h\n" if exists $intrp{$sym}; |
| 73 | if (exists $global{$sym}) |
| 74 | { |
| 75 | delete $global{$sym}; |
| 76 | warn "$sym in global.sym as well as thread\n"; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | sub hide ($$) { |
| 81 | my ($from, $to) = @_; |
| 82 | my $t = int(length($from) / 8); |
| 83 | "#define $from" . "\t" x ($t < 3 ? 3 - $t : 1) . "$to\n"; |
| 84 | } |
| 85 | sub embed ($) { |
| 86 | my ($sym) = @_; |
| 87 | hide($sym, "Perl_$sym"); |
| 88 | } |
| 89 | sub multon ($$$) { |
| 90 | my ($sym,$pre,$ptr) = @_; |
| 91 | hide($sym, "($ptr$pre$sym)"); |
| 92 | } |
| 93 | sub multoff ($$) { |
| 94 | my ($sym,$pre) = @_; |
| 95 | hide("$pre$sym", $sym); |
| 96 | } |
| 97 | |
| 98 | unlink 'embed.h'; |
| 99 | open(EM, '> embed.h') |
| 100 | or die "Can't create embed.h: $!\n"; |
| 101 | |
| 102 | print EM <<'END'; |
| 103 | /* !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
| 104 | This file is built by embed.pl from global.sym, intrpvar.h, |
| 105 | and thrdvar.h. Any changes made here will be lost! |
| 106 | */ |
| 107 | |
| 108 | /* (Doing namespace management portably in C is really gross.) */ |
| 109 | |
| 110 | /* EMBED has no run-time penalty, but helps keep the Perl namespace |
| 111 | from colliding with that used by other libraries pulled in |
| 112 | by extensions or by embedding perl. Allow a cc -DNO_EMBED |
| 113 | override, however, to keep binary compatability with previous |
| 114 | versions of perl. |
| 115 | */ |
| 116 | #ifndef NO_EMBED |
| 117 | # define EMBED 1 |
| 118 | #endif |
| 119 | |
| 120 | /* Hide global symbols? */ |
| 121 | |
| 122 | #ifdef EMBED |
| 123 | |
| 124 | END |
| 125 | |
| 126 | for $sym (sort keys %global) { |
| 127 | print EM embed($sym); |
| 128 | } |
| 129 | |
| 130 | print EM <<'END'; |
| 131 | |
| 132 | #endif /* EMBED */ |
| 133 | |
| 134 | END |
| 135 | |
| 136 | close(EM); |
| 137 | |
| 138 | unlink 'embedvar.h'; |
| 139 | open(EM, '> embedvar.h') |
| 140 | or die "Can't create embedvar.h: $!\n"; |
| 141 | |
| 142 | print EM <<'END'; |
| 143 | /* !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
| 144 | This file is built by embed.pl from global.sym, intrpvar.h, |
| 145 | and thrdvar.h. Any changes made here will be lost! |
| 146 | */ |
| 147 | |
| 148 | /* (Doing namespace management portably in C is really gross.) */ |
| 149 | |
| 150 | /* EMBED has no run-time penalty, but helps keep the Perl namespace |
| 151 | from colliding with that used by other libraries pulled in |
| 152 | by extensions or by embedding perl. Allow a cc -DNO_EMBED |
| 153 | override, however, to keep binary compatability with previous |
| 154 | versions of perl. |
| 155 | */ |
| 156 | |
| 157 | |
| 158 | /* Put interpreter-specific symbols into a struct? */ |
| 159 | |
| 160 | #ifdef MULTIPLICITY |
| 161 | |
| 162 | #ifndef USE_THREADS |
| 163 | /* If we do not have threads then per-thread vars are per-interpreter */ |
| 164 | |
| 165 | END |
| 166 | |
| 167 | for $sym (sort keys %thread) { |
| 168 | print EM multon($sym,'T','curinterp->'); |
| 169 | } |
| 170 | |
| 171 | print EM <<'END'; |
| 172 | |
| 173 | #endif /* !USE_THREADS */ |
| 174 | |
| 175 | /* These are always per-interpreter if there is more than one */ |
| 176 | |
| 177 | END |
| 178 | |
| 179 | for $sym (sort keys %intrp) { |
| 180 | print EM multon($sym,'I','curinterp->'); |
| 181 | } |
| 182 | |
| 183 | print EM <<'END'; |
| 184 | |
| 185 | #else /* !MULTIPLICITY */ |
| 186 | |
| 187 | END |
| 188 | |
| 189 | for $sym (sort keys %intrp) { |
| 190 | print EM multoff($sym,'I'); |
| 191 | } |
| 192 | |
| 193 | print EM <<'END'; |
| 194 | |
| 195 | #ifndef USE_THREADS |
| 196 | |
| 197 | END |
| 198 | |
| 199 | for $sym (sort keys %thread) { |
| 200 | print EM multoff($sym,'T'); |
| 201 | } |
| 202 | |
| 203 | print EM <<'END'; |
| 204 | |
| 205 | #endif /* USE_THREADS */ |
| 206 | |
| 207 | /* Hide what would have been interpreter-specific symbols? */ |
| 208 | |
| 209 | #ifdef EMBED |
| 210 | |
| 211 | END |
| 212 | |
| 213 | for $sym (sort keys %intrp) { |
| 214 | print EM embed($sym); |
| 215 | } |
| 216 | |
| 217 | print EM <<'END'; |
| 218 | |
| 219 | #ifndef USE_THREADS |
| 220 | |
| 221 | END |
| 222 | |
| 223 | for $sym (sort keys %thread) { |
| 224 | print EM embed($sym); |
| 225 | } |
| 226 | |
| 227 | print EM <<'END'; |
| 228 | |
| 229 | #endif /* USE_THREADS */ |
| 230 | #endif /* EMBED */ |
| 231 | #endif /* MULTIPLICITY */ |
| 232 | |
| 233 | /* Now same trickey for per-thread variables */ |
| 234 | |
| 235 | #ifdef USE_THREADS |
| 236 | |
| 237 | END |
| 238 | |
| 239 | for $sym (sort keys %thread) { |
| 240 | print EM multon($sym,'T','thr->'); |
| 241 | } |
| 242 | |
| 243 | print EM <<'END'; |
| 244 | |
| 245 | #endif /* USE_THREADS */ |
| 246 | |
| 247 | #ifdef PERL_GLOBAL_STRUCT |
| 248 | |
| 249 | END |
| 250 | |
| 251 | for $sym (sort keys %globvar) { |
| 252 | print EM multon($sym,'G','Perl_Vars.'); |
| 253 | } |
| 254 | |
| 255 | print EM <<'END'; |
| 256 | |
| 257 | #else /* !PERL_GLOBAL_STRUCT */ |
| 258 | |
| 259 | END |
| 260 | |
| 261 | for $sym (sort keys %globvar) { |
| 262 | print EM multoff($sym,'G'); |
| 263 | } |
| 264 | |
| 265 | print EM <<'END'; |
| 266 | |
| 267 | #ifdef EMBED |
| 268 | |
| 269 | END |
| 270 | |
| 271 | for $sym (sort keys %globvar) { |
| 272 | print EM embed($sym); |
| 273 | } |
| 274 | |
| 275 | print EM <<'END'; |
| 276 | |
| 277 | #endif /* EMBED */ |
| 278 | #endif /* PERL_GLOBAL_STRUCT */ |
| 279 | |
| 280 | END |
| 281 | |
| 282 | close(EM); |