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regen/opcode.pl: display duplicate bit name
[perl5.git] / regen / opcode.pl
CommitLineData
d6480c9d 1#!/usr/bin/perl -w
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2#
3# Regenerate (overwriting only if changed):
4#
5# opcode.h
6# opnames.h
897d3989 7# pp_proto.h
f3574cc6 8# lib/B/Op_private.pm
6294c161 9#
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10# from:
11# * information stored in regen/opcodes;
12# * information stored in regen/op_private (which is actually perl code);
13# * the values hardcoded into this script in @raw_alias.
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14#
15# Accepts the standard regen_lib -q and -v args.
16#
17# This script is normally invoked from regen.pl.
18
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19use strict;
20
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21BEGIN {
22 # Get function prototypes
3d7c117d 23 require './regen/regen_lib.pl';
36bb303b 24}
79072805 25
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26my $oc = open_new('opcode.h', '>',
27 {by => 'regen/opcode.pl', from => 'its data',
28 file => 'opcode.h', style => '*',
29 copyright => [1993 .. 2007]});
30
31my $on = open_new('opnames.h', '>',
32 { by => 'regen/opcode.pl', from => 'its data', style => '*',
33 file => 'opnames.h', copyright => [1999 .. 2008] });
79072805 34
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35my $oprivpm = open_new('lib/B/Op_private.pm', '>',
36 { by => 'regen/opcode.pl',
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37 from => "data in\nregen/op_private "
38 ."and pod embedded in regen/opcode.pl",
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39 style => '#',
40 file => 'lib/B/Op_private.pm',
41 copyright => [2014 .. 2014] });
42
43# Read 'opcodes' data.
79072805 44
d6480c9d 45my %seen;
e71197e2 46my (@ops, %desc, %check, %ckname, %flags, %args, %opnum);
d6480c9d 47
1ae6ead9 48open OPS, '<', 'regen/opcodes' or die $!;
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49
50while (<OPS>) {
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51 chop;
52 next unless $_;
53 next if /^#/;
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54 my ($key, $desc, $check, $flags, $args) = split(/\t+/, $_, 5);
55 $args = '' unless defined $args;
c07a80fd 56
6342d5c5 57 warn qq[Description "$desc" duplicates $seen{$desc}\n]
4c5bab50 58 if $seen{$desc} and $key !~ "transr|(?:intro|clone)cv|lvref";
c07a80fd 59 die qq[Opcode "$key" duplicates $seen{$key}\n] if $seen{$key};
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60 die qq[Opcode "freed" is reserved for the slab allocator\n]
61 if $key eq 'freed';
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62 $seen{$desc} = qq[description of opcode "$key"];
63 $seen{$key} = qq[opcode "$key"];
64
79072805 65 push(@ops, $key);
e71197e2 66 $opnum{$key} = $#ops;
c07a80fd 67 $desc{$key} = $desc;
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68 $check{$key} = $check;
69 $ckname{$check}++;
70 $flags{$key} = $flags;
71 $args{$key} = $args;
72}
73
0927ade0 74# Set up aliases, and alternative funcs
1d5774de 75
0927ade0 76my (%alias, %alts);
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77
78# Format is "this function" => "does these op names"
79my @raw_alias = (
6faeeb49 80 Perl_do_kv => [qw( keys values )],
21b66d1c 81 Perl_unimplemented_op => [qw(padany custom)],
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82 # All the ops with a body of { return NORMAL; }
83 Perl_pp_null => [qw(scalar regcmaybe lineseq scope)],
84
85 Perl_pp_goto => ['dump'],
86 Perl_pp_require => ['dofile'],
87 Perl_pp_untie => ['dbmclose'],
7627e6d0 88 Perl_pp_sysread => {read => '', recv => '#ifdef HAS_SOCKET'},
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89 Perl_pp_sysseek => ['seek'],
90 Perl_pp_ioctl => ['fcntl'],
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91 Perl_pp_ssockopt => {gsockopt => '#ifdef HAS_SOCKET'},
92 Perl_pp_getpeername => {getsockname => '#ifdef HAS_SOCKET'},
0b612f93 93 Perl_pp_stat => ['lstat'],
f1cb2d48 94 Perl_pp_ftrowned => [qw(fteowned ftzero ftsock ftchr ftblk
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95 ftfile ftdir ftpipe ftsuid ftsgid
96 ftsvtx)],
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97 Perl_pp_fttext => ['ftbinary'],
98 Perl_pp_gmtime => ['localtime'],
99 Perl_pp_semget => [qw(shmget msgget)],
100 Perl_pp_semctl => [qw(shmctl msgctl)],
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101 Perl_pp_ghostent => [qw(ghbyname ghbyaddr)],
102 Perl_pp_gnetent => [qw(gnbyname gnbyaddr)],
103 Perl_pp_gprotoent => [qw(gpbyname gpbynumber)],
104 Perl_pp_gservent => [qw(gsbyname gsbyport)],
105 Perl_pp_gpwent => [qw(gpwnam gpwuid)],
106 Perl_pp_ggrent => [qw(ggrnam ggrgid)],
957b0e1d 107 Perl_pp_ftis => [qw(ftsize ftmtime ftatime ftctime)],
605b9385 108 Perl_pp_chown => [qw(unlink chmod utime kill)],
ce6987d0 109 Perl_pp_link => ['symlink'],
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110 Perl_pp_ftrread => [qw(ftrwrite ftrexec fteread ftewrite
111 fteexec)],
ca563b4e 112 Perl_pp_shmwrite => [qw(shmread msgsnd msgrcv semop)],
7627e6d0 113 Perl_pp_syswrite => {send => '#ifdef HAS_SOCKET'},
c960fc3b 114 Perl_pp_defined => [qw(dor dorassign)],
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115 Perl_pp_and => ['andassign'],
116 Perl_pp_or => ['orassign'],
12e9c124 117 Perl_pp_ucfirst => ['lcfirst'],
afd9910b 118 Perl_pp_sle => [qw(slt sgt sge)],
0d863452 119 Perl_pp_print => ['say'],
2723d216 120 Perl_pp_index => ['rindex'],
daa2adfd 121 Perl_pp_oct => ['hex'],
789b4bc9 122 Perl_pp_shift => ['pop'],
71302fe3 123 Perl_pp_sin => [qw(cos exp log sqrt)],
3658c1f1 124 Perl_pp_bit_or => ['bit_xor'],
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125 Perl_pp_nbit_or => ['nbit_xor'],
126 Perl_pp_sbit_or => ['sbit_xor'],
17ab7946 127 Perl_pp_rv2av => ['rv2hv'],
878d132a 128 Perl_pp_akeys => ['avalues'],
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129 Perl_pp_trans => [qw(trans transr)],
130 Perl_pp_chop => [qw(chop chomp)],
131 Perl_pp_schop => [qw(schop schomp)],
132 Perl_pp_bind => {connect => '#ifdef HAS_SOCKET'},
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133 Perl_pp_preinc => ['i_preinc'],
134 Perl_pp_predec => ['i_predec'],
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135 Perl_pp_postinc => ['i_postinc'],
136 Perl_pp_postdec => ['i_postdec'],
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137 Perl_pp_ehostent => [qw(enetent eprotoent eservent
138 spwent epwent sgrent egrent)],
396166e1 139 Perl_pp_shostent => [qw(snetent sprotoent sservent)],
93bad3fd 140 Perl_pp_aelemfast => ['aelemfast_lex'],
21b66d1c 141 Perl_pp_grepstart => ['mapstart'],
0927ade0 142
143 # 2 i_modulo mappings: 2nd is alt, needs 1st (explicit default) to not override the default
144 Perl_pp_i_modulo => ['i_modulo'],
145 Perl_pp_i_modulo_glibc_bugfix => {
146 'i_modulo' =>
147 '#if defined(__GLIBC__) && IVSIZE == 8 '.
148 ' && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))' },
605b9385 149 );
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150
151while (my ($func, $names) = splice @raw_alias, 0, 2) {
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152 if (ref $names eq 'ARRAY') {
153 foreach (@$names) {
0927ade0 154 defined $alias{$_}
155 ? $alts{$_} : $alias{$_} = [$func, ''];
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156 }
157 } else {
158 while (my ($opname, $cond) = each %$names) {
0927ade0 159 defined $alias{$opname}
160 ? $alts{$opname} : $alias{$opname} = [$func, $cond];
7627e6d0 161 }
916e4025 162 }
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163}
164
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165foreach my $sock_func (qw(socket bind listen accept shutdown
166 ssockopt getpeername)) {
167 $alias{$sock_func} = ["Perl_pp_$sock_func", '#ifdef HAS_SOCKET'],
168}
169
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170
171
172# =================================================================
173#
174# Functions for processing regen/op_private data.
175#
176# Put them in a separate package so that croak() does the right thing
177
178package OP_PRIVATE;
179
180use Carp;
181
182
183# the vars holding the global state built up by all the calls to addbits()
184
185
186# map OPpLVAL_INTRO => LVINTRO
187my %LABELS;
188
189
190# the numeric values of flags - what will get output as a #define
191my %DEFINES;
192
193# %BITFIELDS: the various bit field types. The key is the concatenation of
194# all the field values that make up a bit field hash; the values are bit
195# field hash refs. This allows us to de-dup identical bit field defs
196# across different ops, and thus make the output tables more compact (esp
197# important for the C version)
198my %BITFIELDS;
199
200# %FLAGS: the main data structure. Indexed by op name, then bit index:
201# single bit flag:
202# $FLAGS{rv2av}{2} = 'OPpSLICEWARNING';
203# bit field (bits 5 and 6):
204# $FLAGS{rv2av}{5} = $FLAGS{rv2av}{6} = { .... };
205my %FLAGS;
206
207
208# do, with checking, $LABELS{$name} = $label
209
210sub add_label {
211 my ($name, $label) = @_;
212 if (exists $LABELS{$name} and $LABELS{$name} ne $label) {
213 croak "addbits(): label for flag '$name' redefined:\n"
214 . " was '$LABELS{$name}', now '$label'";
215 }
216 $LABELS{$name} = $label;
217}
218
219#
220# do, with checking, $DEFINES{$name} = $val
221
222sub add_define {
223 my ($name, $val) = @_;
224 if (exists $DEFINES{$name} && $DEFINES{$name} != $val) {
225 croak "addbits(): value for flag '$name' redefined:\n"
226 . " was $DEFINES{$name}, now $val";
227 }
228 $DEFINES{$name} = $val;
229}
230
231
232# intended to be called from regen/op_private; see that file for details
233
234sub ::addbits {
235 my @args = @_;
236
237 croak "too few arguments for addbits()" unless @args >= 3;
238 my $op = shift @args;
239 croak "invalid op name: '$op'" unless exists $opnum{$op};
240
241 while (@args) {
242 my $bits = shift @args;
243 if ($bits =~ /^[0-7]$/) {
244 # single bit
245 croak "addbits(): too few arguments for single bit flag"
246 unless @args >= 2;
247 my $flag_name = shift @args;
248 my $flag_label = shift @args;
249 add_label($flag_name, $flag_label);
f802a825 250 croak "addbits(): bit $bits of $op already specified ($FLAGS{$op}{$bits})"
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251 if defined $FLAGS{$op}{$bits};
252 $FLAGS{$op}{$bits} = $flag_name;
253 add_define($flag_name, (1 << $bits));
254 }
255 elsif ($bits =~ /^([0-7])\.\.([0-7])$/) {
256 # bit range
257 my ($bitmin, $bitmax) = ($1,$2);
258
259 croak "addbits(): min bit > max bit in bit range '$bits'"
260 unless $bitmin <= $bitmax;
261 croak "addbits(): bit field argument missing"
262 unless @args >= 1;
263
264 my $arg_hash = shift @args;
265 croak "addbits(): arg to $bits must be a hash ref"
266 unless defined $arg_hash and ref($arg_hash) =~ /HASH/;
267
268 my %valid_keys;
269 @valid_keys{qw(baseshift_def bitcount_def mask_def label enum)} = ();
270 for (keys %$arg_hash) {
271 croak "addbits(): unrecognised bifield key: '$_'"
272 unless exists $valid_keys{$_};
273 }
274
275 my $bitmask = 0;
276 $bitmask += (1 << $_) for $bitmin..$bitmax;
277
278 my $enum_id ='';
279
280 if (defined $arg_hash->{enum}) {
281 my $enum = $arg_hash->{enum};
282 croak "addbits(): arg to enum must be an array ref"
283 unless defined $enum and ref($enum) =~ /ARRAY/;
284 croak "addbits(): enum list must be in triplets"
285 unless @$enum % 3 == 0;
286
287 my $max_id = (1 << ($bitmax - $bitmin + 1)) - 1;
288
289 my @e = @$enum;
290 while (@e) {
291 my $enum_ix = shift @e;
292 my $enum_name = shift @e;
293 my $enum_label = shift @e;
294 croak "addbits(): enum index must be a number: '$enum_ix'"
295 unless $enum_ix =~ /^\d+$/;
296 croak "addbits(): enum index too big: '$enum_ix'"
297 unless $enum_ix <= $max_id;
298 add_label($enum_name, $enum_label);
299 add_define($enum_name, $enum_ix << $bitmin);
300 $enum_id .= "($enum_ix:$enum_name:$enum_label)";
301 }
302 }
303
304 # id is a fingerprint of all the content of the bit field hash
305 my $id = join ':', map defined() ? $_ : "-undef-",
306 $bitmin, $bitmax,
307 $arg_hash->{label},
308 $arg_hash->{mask_def},
309 $arg_hash->{baseshift_def},
310 $arg_hash->{bitcount_def},
311 $enum_id;
312
313 unless (defined $BITFIELDS{$id}) {
314
315 if (defined $arg_hash->{mask_def}) {
316 add_define($arg_hash->{mask_def}, $bitmask);
317 }
318
319 if (defined $arg_hash->{baseshift_def}) {
320 add_define($arg_hash->{baseshift_def}, $bitmin);
321 }
322
323 if (defined $arg_hash->{bitcount_def}) {
324 add_define($arg_hash->{bitcount_def}, $bitmax-$bitmin+1);
325 }
326
327 # create deep copy
328
329 my $copy = {};
330 for (qw(baseshift_def bitcount_def mask_def label)) {
331 $copy->{$_} = $arg_hash->{$_} if defined $arg_hash->{$_};
332 }
333 if (defined $arg_hash->{enum}) {
334 $copy->{enum} = [ @{$arg_hash->{enum}} ];
335 }
336
337 # and add some extra fields
338
339 $copy->{bitmask} = $bitmask;
340 $copy->{bitmin} = $bitmin;
341 $copy->{bitmax} = $bitmax;
342
343 $BITFIELDS{$id} = $copy;
344 }
345
346 for my $bit ($bitmin..$bitmax) {
f802a825 347 croak "addbits(): bit $bit of $op already specified ($FLAGS{$op}{$bit})"
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348 if defined $FLAGS{$op}{$bit};
349 $FLAGS{$op}{$bit} = $BITFIELDS{$id};
350 }
351 }
352 else {
353 croak "addbits(): invalid bit specifier '$bits'";
354 }
355 }
356}
357
358
359# intended to be called from regen/op_private; see that file for details
360
361sub ::ops_with_flag {
362 my $flag = shift;
363 return grep $flags{$_} =~ /\Q$flag/, sort keys %flags;
364}
365
366
367# intended to be called from regen/op_private; see that file for details
368
369sub ::ops_with_check {
370 my $c = shift;
371 return grep $check{$_} eq $c, sort keys %check;
372}
373
374
375# intended to be called from regen/op_private; see that file for details
376
377sub ::ops_with_arg {
378 my ($i, $arg_type) = @_;
379 my @ops;
380 for my $op (sort keys %args) {
381 my @args = split(' ',$args{$op});
382 push @ops, $op if defined $args[$i] and $args[$i] eq $arg_type;
383 }
384 @ops;
385}
386
387
388# output '#define OPpLVAL_INTRO 0x80' etc
389
390sub print_defines {
391 my $fh = shift;
392
393 for (sort { $DEFINES{$a} <=> $DEFINES{$b} || $a cmp $b } keys %DEFINES) {
394 printf $fh "#define %-23s 0x%02x\n", $_, $DEFINES{$_};
395 }
396}
397
398
399# Generate the content of B::Op_private
400
401sub print_B_Op_private {
402 my $fh = shift;
403
404 my $header = <<'EOF';
405@=head1 NAME
406@
407@B::Op_private - OP op_private flag definitions
408@
409@=head1 SYNOPSIS
410@
411@ use B::Op_private;
412@
413@ # flag details for bit 7 of OP_AELEM's op_private:
414@ my $name = $B::Op_private::bits{aelem}{7}; # OPpLVAL_INTRO
415@ my $value = $B::Op_private::defines{$name}; # 128
416@ my $label = $B::Op_private::labels{$name}; # LVINTRO
417@
418@ # the bit field at bits 5..6 of OP_AELEM's op_private:
419@ my $bf = $B::Op_private::bits{aelem}{6};
420@ my $mask = $bf->{bitmask}; # etc
421@
422@=head1 DESCRIPTION
423@
dc1230de 424@This module provides four global hashes:
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425@
426@ %B::Op_private::bits
427@ %B::Op_private::defines
428@ %B::Op_private::labels
dc1230de 429@ %B::Op_private::ops_using
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430@
431@which contain information about the per-op meanings of the bits in the
432@op_private field.
433@
434@=head2 C<%bits>
435@
436@This is indexed by op name and then bit number (0..7). For single bit flags,
437@it returns the name of the define (if any) for that bit:
438@
439@ $B::Op_private::bits{aelem}{7} eq 'OPpLVAL_INTRO';
440@
441@For bit fields, it returns a hash ref containing details about the field.
442@The same reference will be returned for all bit positions that make
443@up the bit field; so for example these both return the same hash ref:
444@
445@ $bitfield = $B::Op_private::bits{aelem}{5};
446@ $bitfield = $B::Op_private::bits{aelem}{6};
447@
448@The general format of this hash ref is
449@
450@ {
451@ # The bit range and mask; these are always present.
452@ bitmin => 5,
453@ bitmax => 6,
454@ bitmask => 0x60,
455@
456@ # (The remaining keys are optional)
457@
458@ # The names of any defines that were requested:
459@ mask_def => 'OPpFOO_MASK',
460@ baseshift_def => 'OPpFOO_SHIFT',
461@ bitcount_def => 'OPpFOO_BITS',
462@
463@ # If present, Concise etc will display the value with a 'FOO='
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464@ # prefix. If it equals '-', then Concise will treat the bit
465@ # field as raw bits and not try to interpret it.
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466@ label => 'FOO',
467@
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468@ # If present, specifies the names of some defines and the
469@ # display labels that are used to assign meaning to particu-
470@ # lar integer values within the bit field; e.g. 3 is dis-
471@ # played as 'C'.
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472@ enum => [ qw(
473@ 1 OPpFOO_A A
474@ 2 OPpFOO_B B
475@ 3 OPpFOO_C C
476@ )],
477@
478@ };
479@
480@
481@=head2 C<%defines>
482@
483@This gives the value of every C<OPp> define, e.g.
484@
485@ $B::Op_private::defines{OPpLVAL_INTRO} == 128;
486@
487@=head2 C<%labels>
488@
489@This gives the short display label for each define, as used by C<B::Concise>
490@and C<perl -Dx>, e.g.
491@
492@ $B::Op_private::labels{OPpLVAL_INTRO} eq 'LVINTRO';
493@
494@If the label equals '-', then Concise will treat the bit as a raw bit and
495@not try to display it symbolically.
496@
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497@=head2 C<%ops_using>
498@
499@For each define, this gives a reference to an array of op names that use
500@the flag.
501@
502@ @ops_using_lvintro = @{ $B::Op_private::ops_using{OPp_LVAL_INTRO} };
503@
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504@=cut
505
506package B::Op_private;
507
508our %bits;
509
510EOF
511 # remove podcheck.t-defeating leading char
512 $header =~ s/^\@//gm;
513 print $fh $header;
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514 my $v = (::perl_version())[3];
515 print $fh qq{\nour \$VERSION = "$v";\n\n};
f3574cc6 516
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517 my %ops_using;
518
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519 # for each flag/bit combination, find the ops which use it
520 my %combos;
521 for my $op (sort keys %FLAGS) {
522 my $entry = $FLAGS{$op};
523 for my $bit (0..7) {
524 my $e = $entry->{$bit};
525 next unless defined $e;
526 next if ref $e; # bit field, not flag
527 push @{$combos{$e}{$bit}}, $op;
dc1230de 528 push @{$ops_using{$e}}, $op;
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529 }
530 }
531
532 # dump flags used by multiple ops
533 for my $flag (sort keys %combos) {
534 for my $bit (sort keys %{$combos{$flag}}) {
535 my $ops = $combos{$flag}{$bit};
536 next unless @$ops > 1;
537 my @o = sort @$ops;
538 print $fh "\$bits{\$_}{$bit} = '$flag' for qw(@o);\n";
539 }
540 }
541
542 # dump bit field definitions
543
544 my %bitfield_ix;
545 {
546 my %bitfields;
547 # stringified-ref to ref mapping
548 $bitfields{$_} = $_ for values %BITFIELDS;
549 my $ix = -1;
550 my $s = "\nmy \@bf = (\n";
551 for my $bitfield_key (sort keys %BITFIELDS) {
552 my $bitfield = $BITFIELDS{$bitfield_key};
553 $ix++;
554 $bitfield_ix{$bitfield} = $ix;
555
556 $s .= " {\n";
557 for (qw(label mask_def baseshift_def bitcount_def)) {
558 next unless defined $bitfield->{$_};
559 $s .= sprintf " %-9s => '%s',\n",
560 $_, $bitfield->{$_};
561 }
562 for (qw(bitmin bitmax bitmask)) {
563 croak "panic" unless defined $bitfield->{$_};
564 $s .= sprintf " %-9s => %d,\n",
565 $_, $bitfield->{$_};
566 }
567 if (defined $bitfield->{enum}) {
568 $s .= " enum => [\n";
569 my @enum = @{$bitfield->{enum}};
570 while (@enum) {
571 my $i = shift @enum;
572 my $name = shift @enum;
573 my $label = shift @enum;
574 $s .= sprintf " %d, %-10s, %s,\n",
575 $i, "'$name'", "'$label'";
576 }
577 $s .= " ],\n";
578 }
579 $s .= " },\n";
580
581 }
582 $s .= ");\n";
583 print $fh "$s\n";
584 }
585
586 # dump bitfields and remaining labels
587
588 for my $op (sort keys %FLAGS) {
589 my @indices;
590 my @vals;
591 my $entry = $FLAGS{$op};
592 my $bit;
593
594 for ($bit = 7; $bit >= 0; $bit--) {
595 next unless defined $entry->{$bit};
596 my $e = $entry->{$bit};
597 if (ref $e) {
598 my $ix = $bitfield_ix{$e};
599 for (reverse $e->{bitmin}..$e->{bitmax}) {
600 push @indices, $_;
601 push @vals, "\$bf[$ix]";
602 }
603 $bit = $e->{bitmin};
604 }
605 else {
606 next if @{$combos{$e}{$bit}} > 1; # already output
607 push @indices, $bit;
608 push @vals, "'$e'";
609 }
610 }
611 if (@indices) {
612 my $s = '';
613 $s = '@{' if @indices > 1;
614 $s .= "\$bits{$op}";
615 $s .= '}' if @indices > 1;
616 $s .= '{' . join(',', @indices) . '} = ';
617 $s .= '(' if @indices > 1;
618 $s .= join ', ', @vals;
619 $s .= ')' if @indices > 1;
620 print $fh "$s;\n";
621 }
622 }
623
624 # populate %defines and %labels
625
626 print $fh "\n\nour %defines = (\n";
627 printf $fh " %-23s => %3d,\n", $_ , $DEFINES{$_} for sort keys %DEFINES;
628 print $fh ");\n\nour %labels = (\n";
629 printf $fh " %-23s => '%s',\n", $_ , $LABELS{$_} for sort keys %LABELS;
630 print $fh ");\n";
631
dc1230de
FC
632 # %ops_using
633 print $fh "\n\nour %ops_using = (\n";
634 # Save memory by using the same array wherever possible.
635 my %flag_by_op_list;
636 my $pending = '';
637 for my $flag (sort keys %ops_using) {
638 my $op_list = $ops_using{$flag} = "@{$ops_using{$flag}}";
639 if (!exists $flag_by_op_list{$op_list}) {
640 $flag_by_op_list{$op_list} = $flag;
641 printf $fh " %-23s => %s,\n", $flag , "[qw($op_list)]"
642 }
643 else {
644 $pending .= "\$ops_using{$flag} = "
645 . "\$ops_using{$flag_by_op_list{$op_list}};\n";
646 }
647 }
648 print $fh ");\n\n$pending";
649
f3574cc6
DM
650}
651
652
653
654# output the contents of the assorted PL_op_private_*[] tables
655
656sub print_PL_op_private_tables {
657 my $fh = shift;
658
659 my $PL_op_private_labels = '';
660 my $PL_op_private_valid = '';
661 my $PL_op_private_bitdef_ix = '';
662 my $PL_op_private_bitdefs = '';
663 my $PL_op_private_bitfields = '';
664
665 my %label_ix;
666 my %bitfield_ix;
667
668 # generate $PL_op_private_labels
669
670 {
671 my %labs;
672 $labs{$_} = 1 for values %LABELS; # de-duplicate labels
673 # add in bit field labels
674 for (values %BITFIELDS) {
675 next unless defined $_->{label};
676 $labs{$_->{label}} = 1;
677 }
678
679 my $labels = '';
680 for my $lab (sort keys %labs) {
681 $label_ix{$lab} = length $labels;
682 $labels .= "$lab\0";
683 $PL_op_private_labels .=
684 " "
685 . join(',', map("'$_'", split //, $lab))
686 . ",'\\0',\n";
687 }
688 }
689
690
691 # generate PL_op_private_bitfields
692
693 {
694 my %bitfields;
695 # stringified-ref to ref mapping
696 $bitfields{$_} = $_ for values %BITFIELDS;
697
698 my $ix = 0;
699 for my $bitfield_key (sort keys %BITFIELDS) {
700 my $bf = $BITFIELDS{$bitfield_key};
701 $bitfield_ix{$bf} = $ix;
702
703 my @b;
704 push @b, $bf->{bitmin},
705 defined $bf->{label} ? $label_ix{$bf->{label}} : -1;
706 my $enum = $bf->{enum};
707 if (defined $enum) {
708 my @enum = @$enum;
709 while (@enum) {
710 my $i = shift @enum;
711 my $name = shift @enum;
712 my $label = shift @enum;
713 push @b, $i, $label_ix{$label};
714 }
715 }
716 push @b, -1; # terminate enum list
717
718 $PL_op_private_bitfields .= " " . join(', ', @b) .",\n";
719 $ix += @b;
720 }
721 }
722
723
724 # generate PL_op_private_bitdefs, PL_op_private_bitdef_ix
725
726 {
727 my $bitdef_count = 0;
728
729 my %not_seen = %FLAGS;
dd6eeb56
FC
730 my @seen_bitdefs;
731 my %seen_bitdefs;
f3574cc6
DM
732
733 my $opnum = -1;
734 for my $op (sort { $opnum{$a} <=> $opnum{$b} } keys %opnum) {
735 $opnum++;
736 die "panic: opnum misorder: opnum=$opnum opnum{op}=$opnum{$op}"
737 unless $opnum == $opnum{$op};
738 delete $not_seen{$op};
739
740 my @bitdefs;
741 my $entry = $FLAGS{$op};
742 my $bit;
743 my $index;
744
745 for ($bit = 7; $bit >= 0; $bit--) {
746 my $e = $entry->{$bit};
747 next unless defined $e;
748
749 my $ix;
750 if (ref $e) {
751 $ix = $bitfield_ix{$e};
752 die "panic: \$bit =\= $e->{bitmax}"
753 unless $bit == $e->{bitmax};
754
755 push @bitdefs, ( ($ix << 5) | ($bit << 2) | 2 );
756 $bit = $e->{bitmin};
757 }
758 else {
759 $ix = $label_ix{$LABELS{$e}};
760 die "panic: no label ix for '$e'" unless defined $ix;
761 push @bitdefs, ( ($ix << 5) | ($bit << 2));
762 }
763 if ($ix > 2047) {
764 die "Too many labels or bitfields (ix=$ix): "
765 . "maybe the type of PL_op_private_bitdefs needs "
766 . "expanding from U16 to U32???";
767 }
768 }
769 if (@bitdefs) {
770 $bitdefs[-1] |= 1; # stop bit
dd6eeb56
FC
771 my $key = join(', ', map(sprintf("0x%04x", $_), @bitdefs));
772 if (!$seen_bitdefs{$key}) {
773 $index = $bitdef_count;
774 $bitdef_count += @bitdefs;
775 push @seen_bitdefs,
776 $seen_bitdefs{$key} = [$index, $key];
777 }
778 else {
779 $index = $seen_bitdefs{$key}[0];
780 }
781 push @{$seen_bitdefs{$key}}, $op;
f3574cc6
DM
782 }
783 else {
784 $index = -1;
785 }
786 $PL_op_private_bitdef_ix .= sprintf " %4d, /* %s */\n", $index, $op;
787 }
788 if (%not_seen) {
789 die "panic: unprocessed ops: ". join(',', keys %not_seen);
790 }
dd6eeb56
FC
791 for (@seen_bitdefs) {
792 local $" = ", ";
793 $PL_op_private_bitdefs .= " $$_[1], /* @$_[2..$#$_] */\n";
794 }
f3574cc6
DM
795 }
796
797
798 # generate PL_op_private_valid
799
800 for my $op (@ops) {
801 my $last;
802 my @flags;
803 for my $bit (0..7) {
804 next unless exists $FLAGS{$op};
805 my $entry = $FLAGS{$op}{$bit};
806 next unless defined $entry;
807 if (ref $entry) {
808 # skip later entries for the same bit field
809 next if defined $last and $last == $entry;
810 $last = $entry;
811 push @flags,
812 defined $entry->{mask_def}
813 ? $entry->{mask_def}
814 : $entry->{bitmask};
815 }
816 else {
817 push @flags, $entry;
818 }
819 }
820
821 # all bets are off
822 @flags = '0xff' if $op eq 'null' or $op eq 'custom';
823
824 $PL_op_private_valid .= sprintf " /* %-10s */ (%s),\n", uc($op),
825 @flags ? join('|', @flags): '0';
826 }
827
828 print $fh <<EOF;
829START_EXTERN_C
830
831#ifndef PERL_GLOBAL_STRUCT_INIT
832
833# ifndef DOINIT
834
835/* data about the flags in op_private */
836
837EXTCONST I16 PL_op_private_bitdef_ix[];
838EXTCONST U16 PL_op_private_bitdefs[];
839EXTCONST char PL_op_private_labels[];
840EXTCONST I16 PL_op_private_bitfields[];
841EXTCONST U8 PL_op_private_valid[];
842
843# else
844
845
846/* PL_op_private_labels[]: the short descriptions of private flags.
847 * All labels are concatenated into a single char array
848 * (separated by \\0's) for compactness.
849 */
850
851EXTCONST char PL_op_private_labels[] = {
852$PL_op_private_labels
853};
854
855
856
857/* PL_op_private_bitfields[]: details about each bit field type.
ac5b5e2c 858 * Each definition consists of the following list of words:
f3574cc6
DM
859 * bitmin
860 * label (index into PL_op_private_labels[]; -1 if no label)
861 * repeat for each enum entry (if any):
862 * enum value
863 * enum label (index into PL_op_private_labels[])
864 * -1
865 */
866
867EXTCONST I16 PL_op_private_bitfields[] = {
868$PL_op_private_bitfields
869};
870
871
872/* PL_op_private_bitdef_ix[]: map an op number to a starting position
873 * in PL_op_private_bitdefs. If -1, the op has no bits defined */
874
875EXTCONST I16 PL_op_private_bitdef_ix[] = {
876$PL_op_private_bitdef_ix
877};
878
879
880
881/* PL_op_private_bitdefs[]: given a starting position in this array (as
882 * supplied by PL_op_private_bitdef_ix[]), each word (until a stop bit is
883 * seen) defines the meaning of a particular op_private bit for a
884 * particular op. Each word consists of:
885 * bit 0: stop bit: this is the last bit def for the current op
886 * bit 1: bitfield: if set, this defines a bit field rather than a flag
887 * bits 2..4: unsigned number in the range 0..7 which is the bit number
888 * bits 5..15: unsigned number in the range 0..2047 which is an index
889 * into PL_op_private_labels[] (for a flag), or
890 * into PL_op_private_bitfields[] (for a bit field)
891 */
892
893EXTCONST U16 PL_op_private_bitdefs[] = {
894$PL_op_private_bitdefs
895};
896
897
898/* PL_op_private_valid: for each op, indexed by op_type, indicate which
899 * flags bits in op_private are legal */
900
901EXTCONST U8 PL_op_private_valid[] = {
902$PL_op_private_valid
903};
904
905# endif /* !DOINIT */
906#endif /* !PERL_GLOBAL_STRUCT_INIT */
907
908END_EXTERN_C
909
910
911EOF
912
913}
914
915
916# =================================================================
917
918
919package main;
920
921# read regen/op_private data
922#
923# This file contains Perl code that builds up some data structures
924# which define what bits in op_private have what meanings for each op.
925# It populates %LABELS, %DEFINES, %FLAGS, %BITFIELDS.
926
3d7c117d 927require './regen/op_private';
f3574cc6
DM
928
929#use Data::Dumper;
930#print Dumper \%LABELS, \%DEFINES, \%FLAGS, \%BITFIELDS;
931
932
79072805
LW
933# Emit defines.
934
cc49830d 935print $oc "#ifndef PERL_GLOBAL_STRUCT_INIT\n\n";
9561d06f 936
7627e6d0
NC
937{
938 my $last_cond = '';
939 my @unimplemented;
940
941 sub unimplemented {
942 if (@unimplemented) {
2d6469fe 943 print $oc "#else\n";
7627e6d0 944 foreach (@unimplemented) {
2d6469fe 945 print $oc "#define $_ Perl_unimplemented_op\n";
7627e6d0 946 }
2d6469fe 947 print $oc "#endif\n";
7627e6d0
NC
948 @unimplemented = ();
949 }
950
951 }
952
953 for (@ops) {
954 my ($impl, $cond) = @{$alias{$_} || ["Perl_pp_$_", '']};
955 my $op_func = "Perl_pp_$_";
956
957 if ($cond ne $last_cond) {
958 # A change in condition. (including to or from no condition)
959 unimplemented();
960 $last_cond = $cond;
961 if ($last_cond) {
2d6469fe 962 print $oc "$last_cond\n";
7627e6d0
NC
963 }
964 }
965 push @unimplemented, $op_func if $last_cond;
2d6469fe 966 print $oc "#define $op_func $impl\n" if $impl ne $op_func;
7627e6d0
NC
967 }
968 # If the last op was conditional, we need to close it out:
969 unimplemented();
9561d06f
NC
970}
971
cc49830d 972print $on "typedef enum opcode {\n";
abdd5c84 973
d6480c9d 974my $i = 0;
79072805 975for (@ops) {
2d6469fe 976 print $on "\t", tab(3,"OP_\U$_"), " = ", $i++, ",\n";
79072805 977}
2d6469fe 978print $on "\t", tab(3,"OP_max"), "\n";
424a4936
NC
979print $on "} opcode;\n";
980print $on "\n#define MAXO ", scalar @ops, "\n";
6e64f32b 981print $on "#define OP_FREED MAXO\n";
79072805 982
c07a80fd 983# Emit op names and descriptions.
79072805 984
2d6469fe 985print $oc <<'END';
73c4f7a1
GS
986START_EXTERN_C
987
79072805 988#ifndef DOINIT
27da23d5 989EXTCONST char* const PL_op_name[];
79072805 990#else
27da23d5 991EXTCONST char* const PL_op_name[] = {
79072805
LW
992END
993
994for (@ops) {
2d6469fe 995 print $oc qq(\t"$_",\n);
c07a80fd
PP
996}
997
2d6469fe 998print $oc <<'END';
a33a81d0 999 "freed",
c07a80fd
PP
1000};
1001#endif
1002
c07a80fd 1003#ifndef DOINIT
27da23d5 1004EXTCONST char* const PL_op_desc[];
c07a80fd 1005#else
27da23d5 1006EXTCONST char* const PL_op_desc[] = {
c07a80fd
PP
1007END
1008
1009for (@ops) {
42d38218
MS
1010 my($safe_desc) = $desc{$_};
1011
a567e93b 1012 # Have to escape double quotes and escape characters.
b0c6325e 1013 $safe_desc =~ s/([\\"])/\\$1/g;
42d38218 1014
2d6469fe 1015 print $oc qq(\t"$safe_desc",\n);
79072805
LW
1016}
1017
2d6469fe 1018print $oc <<'END';
a33a81d0 1019 "freed op",
79072805
LW
1020};
1021#endif
1022
73c4f7a1
GS
1023END_EXTERN_C
1024
27da23d5 1025#endif /* !PERL_GLOBAL_STRUCT_INIT */
22c35a8c 1026END
79072805 1027
79072805
LW
1028# Emit ppcode switch array.
1029
2d6469fe 1030print $oc <<'END';
79072805 1031
73c4f7a1
GS
1032START_EXTERN_C
1033
27da23d5 1034#ifdef PERL_GLOBAL_STRUCT_INIT
97aff369 1035# define PERL_PPADDR_INITED
27da23d5 1036static const Perl_ppaddr_t Gppaddr[]
0000db22
AC
1037#elif !defined(PERL_GLOBAL_STRUCT)
1038# define PERL_PPADDR_INITED
27da23d5 1039EXT Perl_ppaddr_t PL_ppaddr[] /* or perlvars.h */
27da23d5
JH
1040#endif /* PERL_GLOBAL_STRUCT */
1041#if (defined(DOINIT) && !defined(PERL_GLOBAL_STRUCT)) || defined(PERL_GLOBAL_STRUCT_INIT)
97aff369 1042# define PERL_PPADDR_INITED
27da23d5 1043= {
79072805
LW
1044END
1045
1046for (@ops) {
7627e6d0
NC
1047 my $op_func = "Perl_pp_$_";
1048 my $name = $alias{$_};
1049 if ($name && $name->[0] ne $op_func) {
2d6469fe 1050 print $oc "\t$op_func,\t/* implemented by $name->[0] */\n";
6faeeb49
MB
1051 }
1052 else {
2d6469fe 1053 print $oc "\t$op_func,\n";
6faeeb49 1054 }
79072805
LW
1055}
1056
2d6469fe 1057print $oc <<'END';
27da23d5 1058}
79072805 1059#endif
97aff369 1060#ifdef PERL_PPADDR_INITED
27da23d5 1061;
97aff369 1062#endif
79072805 1063
27da23d5 1064#ifdef PERL_GLOBAL_STRUCT_INIT
97aff369 1065# define PERL_CHECK_INITED
27da23d5 1066static const Perl_check_t Gcheck[]
0000db22
AC
1067#elif !defined(PERL_GLOBAL_STRUCT)
1068# define PERL_CHECK_INITED
27da23d5 1069EXT Perl_check_t PL_check[] /* or perlvars.h */
27da23d5
JH
1070#endif
1071#if (defined(DOINIT) && !defined(PERL_GLOBAL_STRUCT)) || defined(PERL_GLOBAL_STRUCT_INIT)
97aff369 1072# define PERL_CHECK_INITED
27da23d5 1073= {
79072805
LW
1074END
1075
1076for (@ops) {
2d6469fe 1077 print $oc "\t", tab(3, "Perl_$check{$_},"), "\t/* $_ */\n";
79072805
LW
1078}
1079
2d6469fe 1080print $oc <<'END';
27da23d5 1081}
79072805 1082#endif
97aff369 1083#ifdef PERL_CHECK_INITED
27da23d5 1084;
97aff369 1085#endif /* #ifdef PERL_CHECK_INITED */
79072805 1086
27da23d5
JH
1087#ifndef PERL_GLOBAL_STRUCT_INIT
1088
79072805 1089#ifndef DOINIT
1ccb7c8d 1090EXTCONST U32 PL_opargs[];
79072805 1091#else
1ccb7c8d 1092EXTCONST U32 PL_opargs[] = {
79072805
LW
1093END
1094
2d6469fe
NC
1095# Emit allowed argument types.
1096
1097my $ARGBITS = 32;
1098
d6480c9d
NC
1099my %argnum = (
1100 'S', 1, # scalar
1101 'L', 2, # list
1102 'A', 3, # array value
1103 'H', 4, # hash value
1104 'C', 5, # code value
1105 'F', 6, # file value
1106 'R', 7, # scalar reference
79072805
LW
1107);
1108
d6480c9d 1109my %opclass = (
db173bac
MB
1110 '0', 0, # baseop
1111 '1', 1, # unop
1112 '2', 2, # binop
1113 '|', 3, # logop
1a67a97c
SM
1114 '@', 4, # listop
1115 '/', 5, # pmop
350de78d 1116 '$', 6, # svop_or_padop
7934575e 1117 '#', 7, # padop
1a67a97c
SM
1118 '"', 8, # pvop_or_svop
1119 '{', 9, # loop
1120 ';', 10, # cop
1121 '%', 11, # baseop_or_unop
1122 '-', 12, # filestatop
1123 '}', 13, # loopexop
b46e009d 1124 '.', 14, # methop
2f7c6295 1125 '+', 15, # unop_aux
db173bac
MB
1126);
1127
c2dedb93
MHM
1128my %opflags = (
1129 'm' => 1, # needs stack mark
1130 'f' => 2, # fold constants
1131 's' => 4, # always produces scalar
1132 't' => 8, # needs target scalar
903fd87c
NC
1133 'T' => 8 | 16, # ... which may be lexical
1134 'i' => 0, # always produces integer (unused since e7311069)
c2dedb93 1135 'I' => 32, # has corresponding int op
e791f90a 1136 'd' => 64, # danger, make temp copy in list assignment
c2dedb93
MHM
1137 'u' => 128, # defaults to $_
1138);
1139
2b420b63
JC
1140my %OP_IS_SOCKET; # /Fs/
1141my %OP_IS_FILETEST; # /F-/
1142my %OP_IS_FT_ACCESS; # /F-+/
1143my %OP_IS_NUMCOMPARE; # /S</
332c2eac 1144my %OP_IS_DIRHOP; # /Fd/
a9f19d0f 1145my %OP_IS_INFIX_BIT; # /S\|/
332c2eac 1146
903fd87c
NC
1147my $OCSHIFT = 8;
1148my $OASHIFT = 12;
a85d93d9 1149
c2dedb93 1150for my $op (@ops) {
d6480c9d 1151 my $argsum = 0;
c2dedb93
MHM
1152 my $flags = $flags{$op};
1153 for my $flag (keys %opflags) {
1154 if ($flags =~ s/$flag//) {
cb7b5e07 1155 die "Flag collision for '$op' ($flags{$op}, $flag)\n"
c2dedb93
MHM
1156 if $argsum & $opflags{$flag};
1157 $argsum |= $opflags{$flag};
1158 }
1159 }
cb7b5e07 1160 die qq[Opcode '$op' has no class indicator ($flags{$op} => $flags)\n]
c2dedb93
MHM
1161 unless exists $opclass{$flags};
1162 $argsum |= $opclass{$flags} << $OCSHIFT;
1163 my $argshift = $OASHIFT;
1164 for my $arg (split(' ',$args{$op})) {
332c2eac
JC
1165 if ($arg =~ s/^D//) {
1166 # handle 1st, just to put D 1st.
1167 $OP_IS_DIRHOP{$op} = $opnum{$op};
1168 }
a85d93d9 1169 if ($arg =~ /^F/) {
e71197e2
JC
1170 # record opnums of these opnames
1171 $OP_IS_SOCKET{$op} = $opnum{$op} if $arg =~ s/s//;
1172 $OP_IS_FILETEST{$op} = $opnum{$op} if $arg =~ s/-//;
6ecf81d6 1173 $OP_IS_FT_ACCESS{$op} = $opnum{$op} if $arg =~ s/\+//;
a85d93d9 1174 }
a9f19d0f 1175 elsif ($arg =~ /^S./) {
2b420b63 1176 $OP_IS_NUMCOMPARE{$op} = $opnum{$op} if $arg =~ s/<//;
a9f19d0f 1177 $OP_IS_INFIX_BIT {$op} = $opnum{$op} if $arg =~ s/\|//;
2b420b63 1178 }
d6480c9d 1179 my $argnum = ($arg =~ s/\?//) ? 8 : 0;
c2dedb93
MHM
1180 die "op = $op, arg = $arg\n"
1181 unless exists $argnum{$arg};
79072805 1182 $argnum += $argnum{$arg};
c2dedb93
MHM
1183 die "Argument overflow for '$op'\n"
1184 if $argshift >= $ARGBITS ||
1185 $argnum > ((1 << ($ARGBITS - $argshift)) - 1);
1186 $argsum += $argnum << $argshift;
1187 $argshift += 4;
79072805
LW
1188 }
1189 $argsum = sprintf("0x%08x", $argsum);
2d6469fe 1190 print $oc "\t", tab(3, "$argsum,"), "/* $op */\n";
79072805
LW
1191}
1192
2d6469fe 1193print $oc <<'END';
79072805
LW
1194};
1195#endif
73c4f7a1 1196
bae1192d
JH
1197#endif /* !PERL_GLOBAL_STRUCT_INIT */
1198
73c4f7a1 1199END_EXTERN_C
79072805
LW
1200END
1201
e71197e2
JC
1202# Emit OP_IS_* macros
1203
2d6469fe 1204print $on <<'EO_OP_IS_COMMENT';
e71197e2 1205
332c2eac
JC
1206/* the OP_IS_* macros are optimized to a simple range check because
1207 all the member OPs are contiguous in regen/opcodes table.
1208 opcode.pl verifies the range contiguity, or generates an OR-equals
1209 expression */
e71197e2
JC
1210EO_OP_IS_COMMENT
1211
1212gen_op_is_macro( \%OP_IS_SOCKET, 'OP_IS_SOCKET');
1213gen_op_is_macro( \%OP_IS_FILETEST, 'OP_IS_FILETEST');
6ecf81d6 1214gen_op_is_macro( \%OP_IS_FT_ACCESS, 'OP_IS_FILETEST_ACCESS');
2b420b63 1215gen_op_is_macro( \%OP_IS_NUMCOMPARE, 'OP_IS_NUMCOMPARE');
332c2eac 1216gen_op_is_macro( \%OP_IS_DIRHOP, 'OP_IS_DIRHOP');
a9f19d0f 1217gen_op_is_macro( \%OP_IS_INFIX_BIT, 'OP_IS_INFIX_BIT');
e71197e2
JC
1218
1219sub gen_op_is_macro {
1220 my ($op_is, $macname) = @_;
1221 if (keys %$op_is) {
1222
1223 # get opnames whose numbers are lowest and highest
1224 my ($first, @rest) = sort {
1225 $op_is->{$a} <=> $op_is->{$b}
1226 } keys %$op_is;
1227
1228 my $last = pop @rest; # @rest slurped, get its last
cb7b5e07 1229 die "Invalid range of ops: $first .. $last\n" unless $last;
6ecf81d6 1230
ce716c52 1231 print $on "\n#define $macname(op) \\\n\t(";
6ecf81d6 1232
e71197e2
JC
1233 # verify that op-ct matches 1st..last range (and fencepost)
1234 # (we know there are no dups)
1235 if ( $op_is->{$last} - $op_is->{$first} == scalar @rest + 1) {
1236
1237 # contiguous ops -> optimized version
2b420b63
JC
1238 print $on "(op) >= OP_" . uc($first)
1239 . " && (op) <= OP_" . uc($last);
e71197e2
JC
1240 }
1241 else {
424a4936 1242 print $on join(" || \\\n\t ",
2b420b63 1243 map { "(op) == OP_" . uc() } sort keys %$op_is);
e71197e2 1244 }
2b420b63 1245 print $on ")\n";
e71197e2 1246 }
a85d93d9
JH
1247}
1248
cc49830d
NC
1249my $pp = open_new('pp_proto.h', '>',
1250 { by => 'opcode.pl', from => 'its data' });
a27f85b3 1251
981b7185
NC
1252{
1253 my %funcs;
1254 for (@ops) {
7627e6d0 1255 my $name = $alias{$_} ? $alias{$_}[0] : "Perl_pp_$_";
981b7185
NC
1256 ++$funcs{$name};
1257 }
1258 print $pp "PERL_CALLCONV OP *$_(pTHX);\n" foreach sort keys %funcs;
0927ade0 1259
1260 print $pp "\n/* alternative functions */\n" if keys %alts;
1261 for my $fn (sort keys %alts) {
1262 my ($x, $cond) = @{$alts{$fn}};
1263 print $pp "$cond\n" if $cond;
1264 print $pp "PERL_CALLCONV OP *$x(pTHX);\n";
1265 print $pp "#endif\n" if $cond;
1266 }
735e0d5c 1267}
f3574cc6
DM
1268
1269print $oc "\n\n";
1270OP_PRIVATE::print_defines($oc);
1271OP_PRIVATE::print_PL_op_private_tables($oc);
1272
1273OP_PRIVATE::print_B_Op_private($oprivpm);
1274
1275foreach ($oc, $on, $pp, $oprivpm) {
ce716c52
NC
1276 read_only_bottom_close_and_rename($_);
1277}
b162f9ea 1278