# opcode.h
# opnames.h
# pp_proto.h
+# lib/B/Op_private.pm
#
-# from information stored in regen/opcodes, plus the
-# values hardcoded into this script in @raw_alias.
+# from:
+# * information stored in regen/opcodes;
+# * information stored in regen/op_private (which is actually perl code);
+# * the values hardcoded into this script in @raw_alias.
#
# Accepts the standard regen_lib -q and -v args.
#
{ by => 'regen/opcode.pl', from => 'its data', style => '*',
file => 'opnames.h', copyright => [1999 .. 2008] });
-# Read data.
+my $oprivpm = open_new('lib/B/Op_private.pm', '>',
+ { by => 'regen/opcode.pl',
+ from => "data in\nregen/op_private "
+ ."and pod embedded in regen/opcode.pl",
+ style => '#',
+ file => 'lib/B/Op_private.pm',
+ copyright => [2014 .. 2014] });
+
+# Read 'opcodes' data.
my %seen;
my (@ops, %desc, %check, %ckname, %flags, %args, %opnum);
$args = '' unless defined $args;
warn qq[Description "$desc" duplicates $seen{$desc}\n]
- if $seen{$desc} and $key !~ "transr|introcv";
+ if $seen{$desc} and $key !~ "transr|(?:intro|clone)cv";
die qq[Opcode "$key" duplicates $seen{$key}\n] if $seen{$key};
die qq[Opcode "freed" is reserved for the slab allocator\n]
if $key eq 'freed';
$alias{$sock_func} = ["Perl_pp_$sock_func", '#ifdef HAS_SOCKET'],
}
+
+
+# =================================================================
+#
+# Functions for processing regen/op_private data.
+#
+# Put them in a separate package so that croak() does the right thing
+
+package OP_PRIVATE;
+
+use Carp;
+
+
+# the vars holding the global state built up by all the calls to addbits()
+
+
+# map OPpLVAL_INTRO => LVINTRO
+my %LABELS;
+
+
+# the numeric values of flags - what will get output as a #define
+my %DEFINES;
+
+# %BITFIELDS: the various bit field types. The key is the concatenation of
+# all the field values that make up a bit field hash; the values are bit
+# field hash refs. This allows us to de-dup identical bit field defs
+# across different ops, and thus make the output tables more compact (esp
+# important for the C version)
+my %BITFIELDS;
+
+# %FLAGS: the main data structure. Indexed by op name, then bit index:
+# single bit flag:
+# $FLAGS{rv2av}{2} = 'OPpSLICEWARNING';
+# bit field (bits 5 and 6):
+# $FLAGS{rv2av}{5} = $FLAGS{rv2av}{6} = { .... };
+my %FLAGS;
+
+
+# do, with checking, $LABELS{$name} = $label
+
+sub add_label {
+ my ($name, $label) = @_;
+ if (exists $LABELS{$name} and $LABELS{$name} ne $label) {
+ croak "addbits(): label for flag '$name' redefined:\n"
+ . " was '$LABELS{$name}', now '$label'";
+ }
+ $LABELS{$name} = $label;
+}
+
+#
+# do, with checking, $DEFINES{$name} = $val
+
+sub add_define {
+ my ($name, $val) = @_;
+ if (exists $DEFINES{$name} && $DEFINES{$name} != $val) {
+ croak "addbits(): value for flag '$name' redefined:\n"
+ . " was $DEFINES{$name}, now $val";
+ }
+ $DEFINES{$name} = $val;
+}
+
+
+# intended to be called from regen/op_private; see that file for details
+
+sub ::addbits {
+ my @args = @_;
+
+ croak "too few arguments for addbits()" unless @args >= 3;
+ my $op = shift @args;
+ croak "invalid op name: '$op'" unless exists $opnum{$op};
+
+ while (@args) {
+ my $bits = shift @args;
+ if ($bits =~ /^[0-7]$/) {
+ # single bit
+ croak "addbits(): too few arguments for single bit flag"
+ unless @args >= 2;
+ my $flag_name = shift @args;
+ my $flag_label = shift @args;
+ add_label($flag_name, $flag_label);
+ croak "addbits(): bit $bits of $op already specified"
+ if defined $FLAGS{$op}{$bits};
+ $FLAGS{$op}{$bits} = $flag_name;
+ add_define($flag_name, (1 << $bits));
+ }
+ elsif ($bits =~ /^([0-7])\.\.([0-7])$/) {
+ # bit range
+ my ($bitmin, $bitmax) = ($1,$2);
+
+ croak "addbits(): min bit > max bit in bit range '$bits'"
+ unless $bitmin <= $bitmax;
+ croak "addbits(): bit field argument missing"
+ unless @args >= 1;
+
+ my $arg_hash = shift @args;
+ croak "addbits(): arg to $bits must be a hash ref"
+ unless defined $arg_hash and ref($arg_hash) =~ /HASH/;
+
+ my %valid_keys;
+ @valid_keys{qw(baseshift_def bitcount_def mask_def label enum)} = ();
+ for (keys %$arg_hash) {
+ croak "addbits(): unrecognised bifield key: '$_'"
+ unless exists $valid_keys{$_};
+ }
+
+ my $bitmask = 0;
+ $bitmask += (1 << $_) for $bitmin..$bitmax;
+
+ my $enum_id ='';
+
+ if (defined $arg_hash->{enum}) {
+ my $enum = $arg_hash->{enum};
+ croak "addbits(): arg to enum must be an array ref"
+ unless defined $enum and ref($enum) =~ /ARRAY/;
+ croak "addbits(): enum list must be in triplets"
+ unless @$enum % 3 == 0;
+
+ my $max_id = (1 << ($bitmax - $bitmin + 1)) - 1;
+
+ my @e = @$enum;
+ while (@e) {
+ my $enum_ix = shift @e;
+ my $enum_name = shift @e;
+ my $enum_label = shift @e;
+ croak "addbits(): enum index must be a number: '$enum_ix'"
+ unless $enum_ix =~ /^\d+$/;
+ croak "addbits(): enum index too big: '$enum_ix'"
+ unless $enum_ix <= $max_id;
+ add_label($enum_name, $enum_label);
+ add_define($enum_name, $enum_ix << $bitmin);
+ $enum_id .= "($enum_ix:$enum_name:$enum_label)";
+ }
+ }
+
+ # id is a fingerprint of all the content of the bit field hash
+ my $id = join ':', map defined() ? $_ : "-undef-",
+ $bitmin, $bitmax,
+ $arg_hash->{label},
+ $arg_hash->{mask_def},
+ $arg_hash->{baseshift_def},
+ $arg_hash->{bitcount_def},
+ $enum_id;
+
+ unless (defined $BITFIELDS{$id}) {
+
+ if (defined $arg_hash->{mask_def}) {
+ add_define($arg_hash->{mask_def}, $bitmask);
+ }
+
+ if (defined $arg_hash->{baseshift_def}) {
+ add_define($arg_hash->{baseshift_def}, $bitmin);
+ }
+
+ if (defined $arg_hash->{bitcount_def}) {
+ add_define($arg_hash->{bitcount_def}, $bitmax-$bitmin+1);
+ }
+
+ # create deep copy
+
+ my $copy = {};
+ for (qw(baseshift_def bitcount_def mask_def label)) {
+ $copy->{$_} = $arg_hash->{$_} if defined $arg_hash->{$_};
+ }
+ if (defined $arg_hash->{enum}) {
+ $copy->{enum} = [ @{$arg_hash->{enum}} ];
+ }
+
+ # and add some extra fields
+
+ $copy->{bitmask} = $bitmask;
+ $copy->{bitmin} = $bitmin;
+ $copy->{bitmax} = $bitmax;
+
+ $BITFIELDS{$id} = $copy;
+ }
+
+ for my $bit ($bitmin..$bitmax) {
+ croak "addbits(): bit $bit of $op already specified"
+ if defined $FLAGS{$op}{$bit};
+ $FLAGS{$op}{$bit} = $BITFIELDS{$id};
+ }
+ }
+ else {
+ croak "addbits(): invalid bit specifier '$bits'";
+ }
+ }
+}
+
+
+# intended to be called from regen/op_private; see that file for details
+
+sub ::ops_with_flag {
+ my $flag = shift;
+ return grep $flags{$_} =~ /\Q$flag/, sort keys %flags;
+}
+
+
+# intended to be called from regen/op_private; see that file for details
+
+sub ::ops_with_check {
+ my $c = shift;
+ return grep $check{$_} eq $c, sort keys %check;
+}
+
+
+# intended to be called from regen/op_private; see that file for details
+
+sub ::ops_with_arg {
+ my ($i, $arg_type) = @_;
+ my @ops;
+ for my $op (sort keys %args) {
+ my @args = split(' ',$args{$op});
+ push @ops, $op if defined $args[$i] and $args[$i] eq $arg_type;
+ }
+ @ops;
+}
+
+
+# output '#define OPpLVAL_INTRO 0x80' etc
+
+sub print_defines {
+ my $fh = shift;
+
+ for (sort { $DEFINES{$a} <=> $DEFINES{$b} || $a cmp $b } keys %DEFINES) {
+ printf $fh "#define %-23s 0x%02x\n", $_, $DEFINES{$_};
+ }
+}
+
+
+# Generate the content of B::Op_private
+
+sub print_B_Op_private {
+ my $fh = shift;
+
+ my $header = <<'EOF';
+@=head1 NAME
+@
+@B::Op_private - OP op_private flag definitions
+@
+@=head1 SYNOPSIS
+@
+@ use B::Op_private;
+@
+@ # flag details for bit 7 of OP_AELEM's op_private:
+@ my $name = $B::Op_private::bits{aelem}{7}; # OPpLVAL_INTRO
+@ my $value = $B::Op_private::defines{$name}; # 128
+@ my $label = $B::Op_private::labels{$name}; # LVINTRO
+@
+@ # the bit field at bits 5..6 of OP_AELEM's op_private:
+@ my $bf = $B::Op_private::bits{aelem}{6};
+@ my $mask = $bf->{bitmask}; # etc
+@
+@=head1 DESCRIPTION
+@
+@This module provides three global hashes:
+@
+@ %B::Op_private::bits
+@ %B::Op_private::defines
+@ %B::Op_private::labels
+@
+@which contain information about the per-op meanings of the bits in the
+@op_private field.
+@
+@=head2 C<%bits>
+@
+@This is indexed by op name and then bit number (0..7). For single bit flags,
+@it returns the name of the define (if any) for that bit:
+@
+@ $B::Op_private::bits{aelem}{7} eq 'OPpLVAL_INTRO';
+@
+@For bit fields, it returns a hash ref containing details about the field.
+@The same reference will be returned for all bit positions that make
+@up the bit field; so for example these both return the same hash ref:
+@
+@ $bitfield = $B::Op_private::bits{aelem}{5};
+@ $bitfield = $B::Op_private::bits{aelem}{6};
+@
+@The general format of this hash ref is
+@
+@ {
+@ # The bit range and mask; these are always present.
+@ bitmin => 5,
+@ bitmax => 6,
+@ bitmask => 0x60,
+@
+@ # (The remaining keys are optional)
+@
+@ # The names of any defines that were requested:
+@ mask_def => 'OPpFOO_MASK',
+@ baseshift_def => 'OPpFOO_SHIFT',
+@ bitcount_def => 'OPpFOO_BITS',
+@
+@ # If present, Concise etc will display the value with a 'FOO='
+@ # prefix. If it equals '-', then Concise will treat the bit
+@ # field as raw bits and not try to interpret it.
+@ label => 'FOO',
+@
+@ # If present, specifies the names of some defines and the
+@ # display labels that are used to assign meaning to particu-
+@ # lar integer values within the bit field; e.g. 3 is dis-
+@ # played as 'C'.
+@ enum => [ qw(
+@ 1 OPpFOO_A A
+@ 2 OPpFOO_B B
+@ 3 OPpFOO_C C
+@ )],
+@
+@ };
+@
+@
+@=head2 C<%defines>
+@
+@This gives the value of every C<OPp> define, e.g.
+@
+@ $B::Op_private::defines{OPpLVAL_INTRO} == 128;
+@
+@=head2 C<%labels>
+@
+@This gives the short display label for each define, as used by C<B::Concise>
+@and C<perl -Dx>, e.g.
+@
+@ $B::Op_private::labels{OPpLVAL_INTRO} eq 'LVINTRO';
+@
+@If the label equals '-', then Concise will treat the bit as a raw bit and
+@not try to display it symbolically.
+@
+@=cut
+
+package B::Op_private;
+
+our %bits;
+
+EOF
+ # remove podcheck.t-defeating leading char
+ $header =~ s/^\@//gm;
+ print $fh $header;
+ my $v = (::perl_version())[3];
+ print $fh qq{\nour \$VERSION = "$v";\n\n};
+
+ # for each flag/bit combination, find the ops which use it
+ my %combos;
+ for my $op (sort keys %FLAGS) {
+ my $entry = $FLAGS{$op};
+ for my $bit (0..7) {
+ my $e = $entry->{$bit};
+ next unless defined $e;
+ next if ref $e; # bit field, not flag
+ push @{$combos{$e}{$bit}}, $op;
+ }
+ }
+
+ # dump flags used by multiple ops
+ for my $flag (sort keys %combos) {
+ for my $bit (sort keys %{$combos{$flag}}) {
+ my $ops = $combos{$flag}{$bit};
+ next unless @$ops > 1;
+ my @o = sort @$ops;
+ print $fh "\$bits{\$_}{$bit} = '$flag' for qw(@o);\n";
+ }
+ }
+
+ # dump bit field definitions
+
+ my %bitfield_ix;
+ {
+ my %bitfields;
+ # stringified-ref to ref mapping
+ $bitfields{$_} = $_ for values %BITFIELDS;
+ my $ix = -1;
+ my $s = "\nmy \@bf = (\n";
+ for my $bitfield_key (sort keys %BITFIELDS) {
+ my $bitfield = $BITFIELDS{$bitfield_key};
+ $ix++;
+ $bitfield_ix{$bitfield} = $ix;
+
+ $s .= " {\n";
+ for (qw(label mask_def baseshift_def bitcount_def)) {
+ next unless defined $bitfield->{$_};
+ $s .= sprintf " %-9s => '%s',\n",
+ $_, $bitfield->{$_};
+ }
+ for (qw(bitmin bitmax bitmask)) {
+ croak "panic" unless defined $bitfield->{$_};
+ $s .= sprintf " %-9s => %d,\n",
+ $_, $bitfield->{$_};
+ }
+ if (defined $bitfield->{enum}) {
+ $s .= " enum => [\n";
+ my @enum = @{$bitfield->{enum}};
+ while (@enum) {
+ my $i = shift @enum;
+ my $name = shift @enum;
+ my $label = shift @enum;
+ $s .= sprintf " %d, %-10s, %s,\n",
+ $i, "'$name'", "'$label'";
+ }
+ $s .= " ],\n";
+ }
+ $s .= " },\n";
+
+ }
+ $s .= ");\n";
+ print $fh "$s\n";
+ }
+
+ # dump bitfields and remaining labels
+
+ for my $op (sort keys %FLAGS) {
+ my @indices;
+ my @vals;
+ my $entry = $FLAGS{$op};
+ my $bit;
+
+ for ($bit = 7; $bit >= 0; $bit--) {
+ next unless defined $entry->{$bit};
+ my $e = $entry->{$bit};
+ if (ref $e) {
+ my $ix = $bitfield_ix{$e};
+ for (reverse $e->{bitmin}..$e->{bitmax}) {
+ push @indices, $_;
+ push @vals, "\$bf[$ix]";
+ }
+ $bit = $e->{bitmin};
+ }
+ else {
+ next if @{$combos{$e}{$bit}} > 1; # already output
+ push @indices, $bit;
+ push @vals, "'$e'";
+ }
+ }
+ if (@indices) {
+ my $s = '';
+ $s = '@{' if @indices > 1;
+ $s .= "\$bits{$op}";
+ $s .= '}' if @indices > 1;
+ $s .= '{' . join(',', @indices) . '} = ';
+ $s .= '(' if @indices > 1;
+ $s .= join ', ', @vals;
+ $s .= ')' if @indices > 1;
+ print $fh "$s;\n";
+ }
+ }
+
+ # populate %defines and %labels
+
+ print $fh "\n\nour %defines = (\n";
+ printf $fh " %-23s => %3d,\n", $_ , $DEFINES{$_} for sort keys %DEFINES;
+ print $fh ");\n\nour %labels = (\n";
+ printf $fh " %-23s => '%s',\n", $_ , $LABELS{$_} for sort keys %LABELS;
+ print $fh ");\n";
+
+}
+
+
+
+# output the contents of the assorted PL_op_private_*[] tables
+
+sub print_PL_op_private_tables {
+ my $fh = shift;
+
+ my $PL_op_private_labels = '';
+ my $PL_op_private_valid = '';
+ my $PL_op_private_bitdef_ix = '';
+ my $PL_op_private_bitdefs = '';
+ my $PL_op_private_bitfields = '';
+
+ my %label_ix;
+ my %bitfield_ix;
+
+ # generate $PL_op_private_labels
+
+ {
+ my %labs;
+ $labs{$_} = 1 for values %LABELS; # de-duplicate labels
+ # add in bit field labels
+ for (values %BITFIELDS) {
+ next unless defined $_->{label};
+ $labs{$_->{label}} = 1;
+ }
+
+ my $labels = '';
+ for my $lab (sort keys %labs) {
+ $label_ix{$lab} = length $labels;
+ $labels .= "$lab\0";
+ $PL_op_private_labels .=
+ " "
+ . join(',', map("'$_'", split //, $lab))
+ . ",'\\0',\n";
+ }
+ }
+
+
+ # generate PL_op_private_bitfields
+
+ {
+ my %bitfields;
+ # stringified-ref to ref mapping
+ $bitfields{$_} = $_ for values %BITFIELDS;
+
+ my $ix = 0;
+ for my $bitfield_key (sort keys %BITFIELDS) {
+ my $bf = $BITFIELDS{$bitfield_key};
+ $bitfield_ix{$bf} = $ix;
+
+ my @b;
+ push @b, $bf->{bitmin},
+ defined $bf->{label} ? $label_ix{$bf->{label}} : -1;
+ my $enum = $bf->{enum};
+ if (defined $enum) {
+ my @enum = @$enum;
+ while (@enum) {
+ my $i = shift @enum;
+ my $name = shift @enum;
+ my $label = shift @enum;
+ push @b, $i, $label_ix{$label};
+ }
+ }
+ push @b, -1; # terminate enum list
+
+ $PL_op_private_bitfields .= " " . join(', ', @b) .",\n";
+ $ix += @b;
+ }
+ }
+
+
+ # generate PL_op_private_bitdefs, PL_op_private_bitdef_ix
+
+ {
+ my $bitdef_count = 0;
+
+ my %not_seen = %FLAGS;
+
+ my $opnum = -1;
+ for my $op (sort { $opnum{$a} <=> $opnum{$b} } keys %opnum) {
+ $opnum++;
+ die "panic: opnum misorder: opnum=$opnum opnum{op}=$opnum{$op}"
+ unless $opnum == $opnum{$op};
+ delete $not_seen{$op};
+
+ my @bitdefs;
+ my $entry = $FLAGS{$op};
+ my $bit;
+ my $index;
+
+ for ($bit = 7; $bit >= 0; $bit--) {
+ my $e = $entry->{$bit};
+ next unless defined $e;
+
+ my $ix;
+ if (ref $e) {
+ $ix = $bitfield_ix{$e};
+ die "panic: \$bit =\= $e->{bitmax}"
+ unless $bit == $e->{bitmax};
+
+ push @bitdefs, ( ($ix << 5) | ($bit << 2) | 2 );
+ $bit = $e->{bitmin};
+ }
+ else {
+ $ix = $label_ix{$LABELS{$e}};
+ die "panic: no label ix for '$e'" unless defined $ix;
+ push @bitdefs, ( ($ix << 5) | ($bit << 2));
+ }
+ if ($ix > 2047) {
+ die "Too many labels or bitfields (ix=$ix): "
+ . "maybe the type of PL_op_private_bitdefs needs "
+ . "expanding from U16 to U32???";
+ }
+ }
+ if (@bitdefs) {
+ $bitdefs[-1] |= 1; # stop bit
+ $index = $bitdef_count;
+ $bitdef_count += @bitdefs;
+ $PL_op_private_bitdefs .= sprintf " /* %-13s */ %s,\n",
+ $op,
+ join(', ', map(sprintf("0x%04x", $_), @bitdefs));
+ }
+ else {
+ $index = -1;
+ }
+ $PL_op_private_bitdef_ix .= sprintf " %4d, /* %s */\n", $index, $op;
+ }
+ if (%not_seen) {
+ die "panic: unprocessed ops: ". join(',', keys %not_seen);
+ }
+ }
+
+
+ # generate PL_op_private_valid
+
+ for my $op (@ops) {
+ my $last;
+ my @flags;
+ for my $bit (0..7) {
+ next unless exists $FLAGS{$op};
+ my $entry = $FLAGS{$op}{$bit};
+ next unless defined $entry;
+ if (ref $entry) {
+ # skip later entries for the same bit field
+ next if defined $last and $last == $entry;
+ $last = $entry;
+ push @flags,
+ defined $entry->{mask_def}
+ ? $entry->{mask_def}
+ : $entry->{bitmask};
+ }
+ else {
+ push @flags, $entry;
+ }
+ }
+
+ # all bets are off
+ @flags = '0xff' if $op eq 'null' or $op eq 'custom';
+
+ $PL_op_private_valid .= sprintf " /* %-10s */ (%s),\n", uc($op),
+ @flags ? join('|', @flags): '0';
+ }
+
+ print $fh <<EOF;
+START_EXTERN_C
+
+#ifndef PERL_GLOBAL_STRUCT_INIT
+
+# ifndef DOINIT
+
+/* data about the flags in op_private */
+
+EXTCONST I16 PL_op_private_bitdef_ix[];
+EXTCONST U16 PL_op_private_bitdefs[];
+EXTCONST char PL_op_private_labels[];
+EXTCONST I16 PL_op_private_bitfields[];
+EXTCONST U8 PL_op_private_valid[];
+
+# else
+
+
+/* PL_op_private_labels[]: the short descriptions of private flags.
+ * All labels are concatenated into a single char array
+ * (separated by \\0's) for compactness.
+ */
+
+EXTCONST char PL_op_private_labels[] = {
+$PL_op_private_labels
+};
+
+
+
+/* PL_op_private_bitfields[]: details about each bit field type.
+ * Each defintition consists of the following list of words:
+ * bitmin
+ * label (index into PL_op_private_labels[]; -1 if no label)
+ * repeat for each enum entry (if any):
+ * enum value
+ * enum label (index into PL_op_private_labels[])
+ * -1
+ */
+
+EXTCONST I16 PL_op_private_bitfields[] = {
+$PL_op_private_bitfields
+};
+
+
+/* PL_op_private_bitdef_ix[]: map an op number to a starting position
+ * in PL_op_private_bitdefs. If -1, the op has no bits defined */
+
+EXTCONST I16 PL_op_private_bitdef_ix[] = {
+$PL_op_private_bitdef_ix
+};
+
+
+
+/* PL_op_private_bitdefs[]: given a starting position in this array (as
+ * supplied by PL_op_private_bitdef_ix[]), each word (until a stop bit is
+ * seen) defines the meaning of a particular op_private bit for a
+ * particular op. Each word consists of:
+ * bit 0: stop bit: this is the last bit def for the current op
+ * bit 1: bitfield: if set, this defines a bit field rather than a flag
+ * bits 2..4: unsigned number in the range 0..7 which is the bit number
+ * bits 5..15: unsigned number in the range 0..2047 which is an index
+ * into PL_op_private_labels[] (for a flag), or
+ * into PL_op_private_bitfields[] (for a bit field)
+ */
+
+EXTCONST U16 PL_op_private_bitdefs[] = {
+$PL_op_private_bitdefs
+};
+
+
+/* PL_op_private_valid: for each op, indexed by op_type, indicate which
+ * flags bits in op_private are legal */
+
+EXTCONST U8 PL_op_private_valid[] = {
+$PL_op_private_valid
+};
+
+# endif /* !DOINIT */
+#endif /* !PERL_GLOBAL_STRUCT_INIT */
+
+END_EXTERN_C
+
+
+EOF
+
+}
+
+
+# =================================================================
+
+
+package main;
+
+# read regen/op_private data
+#
+# This file contains Perl code that builds up some data structures
+# which define what bits in op_private have what meanings for each op.
+# It populates %LABELS, %DEFINES, %FLAGS, %BITFIELDS.
+
+require 'regen/op_private';
+
+#use Data::Dumper;
+#print Dumper \%LABELS, \%DEFINES, \%FLAGS, \%BITFIELDS;
+
+
# Emit defines.
print $oc "#ifndef PERL_GLOBAL_STRUCT_INIT\n\n";
}
print $pp "PERL_CALLCONV OP *$_(pTHX);\n" foreach sort keys %funcs;
}
-foreach ($oc, $on, $pp) {
- read_only_bottom_close_and_rename($_);
-}
-
-# Some comments about 'T' opcode classifier:
-
-# Safe to set if the ppcode uses:
-# tryAMAGICbin, tryAMAGICun, SETn, SETi, SETu, PUSHn, PUSHTARG, SETTARG,
-# SETs(TARG), XPUSHn, XPUSHu,
-
-# Unsafe to set if the ppcode uses dTARG or [X]RETPUSH[YES|NO|UNDEF]
-# lt and friends do SETs (including ncmp, but not scmp)
+print $oc "\n\n";
+OP_PRIVATE::print_defines($oc);
+OP_PRIVATE::print_PL_op_private_tables($oc);
-# Additional mode of failure: the opcode can modify TARG before it "used"
-# all the arguments (or may call an external function which does the same).
-# If the target coincides with one of the arguments ==> kaboom.
+OP_PRIVATE::print_B_Op_private($oprivpm);
-# pp.c pos substr each not OK (RETPUSHUNDEF)
-# substr vec also not OK due to LV to target (are they???)
-# ref not OK (RETPUSHNO)
-# trans not OK (dTARG; TARG = sv_newmortal();)
-# ucfirst etc not OK: TMP arg processed inplace
-# quotemeta not OK (unsafe when TARG == arg)
-# each repeat not OK too due to list context
-# pack split - unknown whether they are safe
-# sprintf: is calling do_sprintf(TARG,...) which can act on TARG
-# before other args are processed.
-
-# Suspicious wrt "additional mode of failure" (and only it):
-# schop, chop, postinc/dec, bit_and etc, negate, complement.
-
-# Also suspicious: 4-arg substr, sprintf, uc/lc (POK_only), reverse, pack.
-
-# substr/vec: doing TAINT_off()???
-
-# pp_hot.c
-# readline - unknown whether it is safe
-# match subst not OK (dTARG)
-# grepwhile not OK (not always setting)
-# join not OK (unsafe when TARG == arg)
-
-# Suspicious wrt "additional mode of failure": concat (dealt with
-# in ck_sassign()), join (same).
-
-# pp_ctl.c
-# mapwhile flip caller not OK (not always setting)
-
-# pp_sys.c
-# backtick glob warn die not OK (not always setting)
-# warn not OK (RETPUSHYES)
-# open fileno getc sysread syswrite ioctl accept shutdown
-# ftsize(etc) readlink telldir fork alarm getlogin not OK (RETPUSHUNDEF)
-# umask select not OK (XPUSHs(&PL_sv_undef);)
-# fileno getc sysread syswrite tell not OK (meth("FILENO" "GETC"))
-# sselect shm* sem* msg* syscall - unknown whether they are safe
-# gmtime not OK (list context)
+foreach ($oc, $on, $pp, $oprivpm) {
+ read_only_bottom_close_and_rename($_);
+}
-# Suspicious wrt "additional mode of failure": warn, die, select.
https://perl5.git.perl.org / perl5.git / blobdiff