B::Asmdata(3pm) Perl Programmers Reference Guide B::Asmdata(3pm)
NAME
B::Asmdata - Autogenerated data about Perl ops, used to generate byte-
code
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"
perl v5.8.9 2001-09-21 B::Asmdata(3pm)
Mac OS X 10.6 - Generated Thu Sep 17 20:10:41 CDT 2009