B::Asmdata man page on MirBSD

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ext::B::B::AsmdatPerl)Programmers Referenceext::B::B::Asmdata(3p)

NAME
     B::Asmdata - Autogenerated data about Perl ops, used to gen-
     erate 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"

perl v5.8.8		   2005-02-05				1

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