class CPU(object):

	'''Abstract base class for CPU families.

	'''

	# String that we use to identify this CPU type.

	name = None

	# GCC flags to pass to the compile and link commands.

	gccFlags = ()

class Alpha(CPU):

	'''DEC Alpha.

	'''

	name = 'alpha'

class ARM(CPU):

	'''ARM.

	'''

	name = 'arm'

class ARM64(CPU):

	'''ARM 64-bit, little endian mode.

	'''

	name = 'aarch64'

class ARM64BE(CPU):

	'''ARM 64-bit, big endian mode.

	'''

	name = 'aarch64_be'

class AVR32(CPU):

	'''Atmel AVR32, an embedded RISC CPU.

	'''

	name = 'avr32'

class HPPA(CPU):

	'''HP PA-RISC.

	'''

	name = 'hppa'

class IA64(CPU):

	'''Intel Itanium.

	'''

	name = 'ia64'

class LoongArch64(CPU):

	'''64-bit LoongArch.

	'''

	name = 'loongarch64'

class M68k(CPU):

	'''Motorola 680x0.

	'''

	name = 'm68k'

class MIPS(CPU):

	'''Big endian MIPS.

	'''

	name = 'mips'

class MIPSel(MIPS):

	'''Little endian MIPS.

	'''

	name = 'mipsel'

class PPC(CPU):

	'''32-bit Power PC.

	'''

	name = 'ppc'

class PPC64(CPU):

	'''64-bit Power PC.

	'''

	name = 'ppc64'

class PPC64LE(CPU):

	'''64-bit Power PC LE.

	'''

	name = 'ppc64le'

class RISCV64(CPU):

	'''64-bit RISC-V.

	'''

	name = 'riscv64'

class S390(CPU):

	'''IBM S/390.

	'''

	name = 's390'

class SH(CPU):

	'''Little endian Renesas SuperH.

	'''

	name = 'sh'

class SHeb(CPU):

	'''Big endian Renesas SuperH.

	'''

	name = 'sheb'

class Sparc(CPU):

	'''Sun Sparc.

	'''

	name = 'sparc'

class X86(CPU):

	'''32-bit x86: Intel Pentium, AMD Athlon etc.

	'''

	name = 'x86'

	gccFlags = '-m32',

class X86_64(CPU):

	'''64-bit x86. Also known as AMD64 or x64.

	'''

	name = 'x86_64'

	gccFlags = '-m64',

# Build a dictionary of CPUs using introspection.

_cpusByName = {

	obj.name: obj

	for obj in locals().values()

	if isinstance(obj, type)

		and issubclass(obj, CPU)

		and obj is not CPU

	}

def getCPU(name):

	return _cpusByName[name]