b::asmdata(3)
NAME
B::Asmdata - Autogenerated data about Perl ops, used to
generate bytecode
SYNOPSIS
use B::Asmdata qw(%insn_data @insn_name @optype @specialsv_name);
DESCRIPTION
Provides information about Perl ops in order to generate
bytecode via a bunch of exported variables. Its mostly
used by B::Assembler and B::Disassembler.
- %insn_data
- my($bytecode_num, $put_sub, $get_meth) = @$insn_da
- ta{$op_name};
- For a given $op_name (for example, 'cop_label',
'sv_flags', etc...) you get an array ref containing
the bytecode number of the op, a reference to the sub
routine used to 'PUT', and the name of the method used
to 'GET'. - @insn_name
- my $op_name = $insn_name[$bytecode_num];
- A simple mapping of the bytecode number to the name of
the op. Suitable for using with %insn_data like so:
my $op_info = $insn_data{$insn_name[$bytecode_num]};- @optype
- my $op_type = $optype[$op_type_num];
- A simple mapping of the op type number to its type
(like 'COP' or 'BINOP'). - @specialsv_name
- my $sv_name = $specialsv_name[$sv_index];
- Certain SV types are considered 'special'. They're
represented by B::SPECIAL and are refered to by a num
ber from the specialsv_list. This array maps that
number back to the name of the SV (like 'Nullsv' or
'&PL_sv_undef').
AUTHOR
- Malcolm Beattie, "mbeattie@sable.ox.ac.uk"