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# Copyright (C) 2010 Rocky Bernstein <rockyb@rubyforge.net>
module Registers
def register_array_index(name, args, max_value=nil)
if args.size == 0
# Form is: "info xx" which means "info xx 0"
lookup_pos = position = 0
else
position_str = args[0]
opts = {
:msg_on_error =>
"The 'info registers %s' command argument must eval to an integer. Got: %s" % [name, position_str],
# :min_value => 0,
:max_value => max_value
}
position = @proc.get_an_int(position_str, opts)
return nil unless position
end
lookup_pos =
if 'lfp' == name
max_value + 1 - position
elsif 'sp' == name && 'CFUNC' == @proc.frame.type
# && @proc.frame.next.type == 'IFUNC" # ?
# FIXME: In C frames there seems to be some vm_push_frame's
# via perhaps vm_yield_with_cfunc along with sp adjustments.
# I am not sure if this is under what conditions this
# *doesn't* happen so until I can figure out the better thing
# to do, possibly in the Ruby 1.9 interpeter, we'll handle
# this here. It is also conceivable to handle this in
# thread_frame's sp handling.
position + 2
else
position
end
msg("VM %s(%d) = %s" % [name, position,
@proc.frame.send(name, lookup_pos).inspect])
return position
end
end
Version data entries
7 entries across 7 versions & 1 rubygems