def alloc(size, name):
	'''Allocates a segment of the given size.'''

	# first lets get the last segment in this binary
	last_seg_end = idaapi.get_last_seg().endEA

	# and the first
	first_seg_start = idaapi.get_first_seg().startEA

	# now see how many bytes we have from there to 0xFFFFFFFF
	bytes_high = 0xFFFFFFFF - last_seg_end

	# now see how many bytes we have from 0x0 to the first segments start  
	bytes_low = first_seg_start

	# check where we have more room
	if bytes_high > bytes_low:
		print "[*] segment.py: there is room above current segments"
		new_seg_start = last_seg_end + 0x10000
		new_seg_start = new_seg_start & 0xFFFF0000
	else:
		print "[*] segment.py: there is room below current segments"
		new_seg_start = 0 + 0x1000

	idc.SegCreate(new_seg_start, new_seg_start+size, 0, True, 3, 2)
	idc.SegRename(new_seg_start, name)
	
	return new_seg_start