Added mov reg, DWORD support to set()

git-svn-id: file:///home/svn/incoming/trunk@3280 4d416f70-5f16-0410-b530-b9f4589650da

lib/rex/arch/x86.rb

@@ -109,7 +109,7 @@ module X86
 	end
 
 	#
-	# This method generates the mod r/m character for a source and destinatino
+	# This method generates the mod r/m character for a source and destination
 	# register.
 	#
 	def self.encode_modrm(dst, src)
@@ -172,6 +172,15 @@ module X86
 		return "\x66" + (0xb8 | reg).chr + [ val ].pack('v')
 	end
 
+	#
+	# This method generates the opcodes that set the a register to the
+	# supplied value.
+	#
+	def self.mov_dword(reg, val)
+		_check_reg(reg)
+		return (0xb8 | reg).chr + [ val ].pack('V')
+	end
+
 	#
 	# This method is a general way of setting a register to a value.  Depending
 	# on the value supplied, different sets of instructions may be used.
@@ -197,6 +206,12 @@ module X86
 		rescue ::ArgumentError, RuntimeError, RangeError
 		end
 
+		# try clear dst, mov DWORD dst
+		begin
+			return _check_badchars(clear(dst, badchars) + mov_dword(dst, val), badchars)
+		rescue ::ArgumentError, RuntimeError, RangeError
+		end
+
 		raise RuntimeError, "No valid set instruction could be created!", caller()
 	end