r1 - 26 May 2008 - TWikiGuest
NAME
B::Asmdata - Autogenerated data about Perl ops, used to generate bytecodeSYNOPSIS
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'.
- Add more detail about what $put_sub and $get_meth are and how to use them.
- @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
