fix: correctly parse jump bytes

Previously only a single byte was read and saved,
but the J-byte means, that the read signed-byte
must be added to the address of the next
instruction.

src/instructions.rs

@@ -165,26 +165,26 @@ pub enum Mnemonic {
     DEC_Reg(Register),
     DEC_Mod(ModRmTarget),
     // Jumps
-    JO(IByte),
-    JNO(IByte),
-    JB(IByte),
-    JNB(IByte),
-    JZ(IByte),
-    JNZ(IByte),
-    JBE(IByte),
-    JA(IByte),
-    JS(IByte),
-    JNS(IByte),
-    JPE(IByte),
-    JPO(IByte),
-    JL(IByte),
-    JGE(IByte),
-    JLE(IByte),
-    JG(IByte),
-    LOOPNZ(IByte),
-    LOOPZ(IByte),
-    LOOP(IByte),
-    JCXZ(IByte),
+    JO(isize),
+    JNO(isize),
+    JB(isize),
+    JNB(isize),
+    JZ(isize),
+    JNZ(isize),
+    JBE(isize),
+    JA(isize),
+    JS(isize),
+    JNS(isize),
+    JPE(isize),
+    JPO(isize),
+    JL(isize),
+    JGE(isize),
+    JLE(isize),
+    JG(isize),
+    LOOPNZ(isize),
+    LOOPZ(isize),
+    LOOP(isize),
+    JCXZ(isize),
 
     // TEST
     TEST(ModRmTarget, Register),
@@ -231,7 +231,7 @@ pub enum Mnemonic {
     CWD,
     // CALL
     CALL_p(Pointer),
-    CALL_v(Word),
+    CALL_v(isize),
     CALL_Mod(ModRmTarget),
     // JUMP
     JMP_p(Pointer),