Implement the jz instruction.

--HG--
extra : convert_revision : 7c0bd7ce244f724ac03bbb5fdf770c7a3eba78b4

src/arch/x86/isa/decoder/one_byte_opcodes.isa

@@ -263,7 +263,7 @@
             0x1: jno_Jb();
             0x2: jb_Jb();
             0x3: jnb_Jb();
-            0x4: jz_Jb();
+            0x4: Inst::JZ(Jb);
             0x5: jnz_Jb();
             0x6: jbe_Jb();
             0x7: jnbe_Jb();

src/arch/x86/isa/insts/control_transfer/jump.py

@@ -53,8 +53,11 @@
 #
 # Authors: Gabe Black
 
-microcode = ""
-#let {{
-#    class JMP(Inst):
-#	"GenFault ${new UnimpInstFault}"
-#}};
+microcode = '''
+def macroop JZ_I
+{
+    rdip t1
+    limm t2, imm
+    wrip t1, t2, flags=(CZF,)
+};
+'''