metasm/cpu/x86_64/parse.rb in metasm-1.0.3 vs metasm/cpu/x86_64/parse.rb in metasm-1.0.4

@@ -47,10 +47,10 @@
 		super(i)
 	end
 
 	# check if the argument matches the opcode's argument spec
 	def parse_arg_valid?(o, spec, arg)
-		return if arg.kind_of? ModRM and ((arg.b and arg.b.val == 16 and arg.i) or (arg.i and arg.i.val == 16 and (arg.b or arg.s != 1)))
+		return if arg.kind_of? ModRM and ((arg.b and arg.b.val == 16 and arg.i) or (arg.i and arg.i.val == 16 and (arg.b or arg.s != 1)))	# cannot encode [rip+base], only [rip+imm]
 		return if arg.kind_of? Reg and arg.sz >= 32 and arg.val == 16	# eip/rip only in modrm
 		return if o.props[:auto64] and arg.respond_to? :sz and arg.sz == 32
 		# vex c4/c5
 		return if o.fields[:vex_r] and not o.fields[:vex_b] and (spec == :modrm or spec == :modrmxmm or spec == :modrmymm) and (((arg.kind_of?(SimdReg) or arg.kind_of?(Reg)) and arg.val >= 8) or (arg.kind_of?(ModRM) and ((arg.b and arg.b.val >= 8) or (arg.i and arg.i.val >= 8))))
 		if o.name == 'movsxd'