b::asmdata(3pm)
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_data{$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 subroutine 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 referred to by a number 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"