ronin-rb/ronin-support

# frozen_string_literal: true
#
# Copyright (c) 2006-2023 Hal Brodigan (postmodern.mod3 at gmail.com)
#
# ronin-support is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# ronin-support is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with ronin-support.  If not, see <https://www.gnu.org/licenses/>.
#

require 'ronin/support/binary/ctypes/little_endian'

module Ronin
  module Support
    module Binary
      module CTypes
        module Arch
          module MIPS64
            #
            # Represents the C types for the MIPS64 architecture,
            # in little-endian mode.
            #
            module LittleEndian
              include CTypes::LittleEndian

              # The size of a pointer in bytes on MIPS64 (little-endian).
              ADDRESS_SIZE = 8

              # The `long` type.
              LONG = CTypes::LittleEndian::INT64

              # The `unsigned long` type.
              ULONG = CTypes::LittleEndian::UINT64

              # The "machine word" type.
              MACHINE_WORD = CTypes::LittleEndian::UINT64

              # The `void *` type.
              POINTER = MACHINE_WORD

              # The MIPS64 types.
              TYPES = CTypes::LittleEndian::TYPES.merge(
                long:  self::LONG,
                ulong: self::ULONG,

                machine_word: self::MACHINE_WORD,
                pointer:      self::POINTER
              )

              #
              # Fetches the type from {TYPES}.
              #
              # @param [Symbol] name
              #   The type name to lookup.
              #
              # @return [Type]
              #   The type object from {TYPES}.
              #
              # @raise [ArgumentError]
              #   The type name was unknown.
              #
              def self.[](name)
                self::TYPES.fetch(name) do
                  raise(ArgumentError,"unknown MIPS64 (little-endian) type: #{name.inspect}")
                end
              end
            end
          end
        end
      end
    end
  end
end