Assembleur final

Epreuve2.asm

@@ -0,0 +1,22 @@
+
+_main:
+    MOV R0 0   ; a
+    MOV R1 1   ; b
+    OUT R0     ; print 0
+
+_loop:
+    OUT R1     ; print b
+    MOV R2 0   ; 0
+    MOV R3 R0  ; c = a
+    SUB R2 R1  ; 0 - b
+    SUB R3 R2  ; a - (0 - b) = a - -b = a + b
+
+    MOV R0 R1  ; a = b
+    MOV R1 R3  ; b = c
+
+    CMP R1 R0
+    JLT _end   ; end si b < a
+    JMP _loop
+
+_end:
+    RET

assembleur.py

@@ -155,12 +155,13 @@ instructions = {
 }
 
 labels = {}
+lastLabel = ""
 
 def valueToInt(arg):
     try:
         return int(arg)
     except:
-        return ord(arg)
+        return ord(arg[1])
 
 def registerToDec(reg):
     return int(reg[1])
@@ -280,19 +281,18 @@ def convertInsCMP(args):
 def convertInsLDR(args):
     idReg0 = registerToDec(args[0])
     idReg1 = registerToDec(args[1])
-    return {"opcode": [0b10110000 | (idReg0 << 2) | (idReg1), valueToInt(args[2]), "label"], "label": args[0], "offset": 0}
+    return {"opcode": [0b10110000 | (idReg0 << 2) | (idReg1), "label"], "label": args[2], "offset": 0, "DB_Update": True}
 
 def convertInsSTR(args):
     idReg0 = registerToDec(args[0])
     idReg1 = registerToDec(args[1])
-    return {"opcode": [0b01110000 | (idReg0 << 2) | (idReg1), valueToInt(args[2]), "label"], "label": args[0], "offset": 0}
+    return {"opcode": [0b01110000 | (idReg0 << 2) | (idReg1), "label"], "label": args[2], "offset": 0, "DB_Update": True}
 
 def convertInsOUT(args):
-
-    return {"opcode": [0b11110000]}
+    idReg0 = registerToDec(args[0])
+    return {"opcode": [0b11110000 | idReg0]}
 
 def convertInsTIM(args):
-
     value = valueToInt(args[0])
     return {"opcode": [0b11111000, value]}
 
@@ -356,6 +356,7 @@ def decodeInstruction(args, ins):
     pass
 
 def decodeLine(line, PC):
+    global lastLabel, labels
     commentPos = line.find(";")
     if (commentPos != -1):
         line = line[:line.find(";")]
@@ -371,7 +372,8 @@ def decodeLine(line, PC):
     #print(args)
     
     if (testArgIsLabel(INS, twoDotsIncluded=True)):
-        labels[INS[:-1]] = PC
+        lastLabel = INS[:-1]
+        labels[lastLabel] = PC
         return
 
     instruction = None
@@ -389,24 +391,25 @@ def decodeLine(line, PC):
 
 
 def assemble(path):
+    global lastLabel, labels
     PC = 0
     assemble1st = []
+    bytecode = []
     with open(path, "r") as file:
         # 1er lecture, pre-compilation
         for line in file:
             print(line, end="")
             ret = decodeLine(line, PC)
             if (ret != None):
-                assemble1st.append(ret)
-                if (not "DB" in ret):
                 PC += len(ret["opcode"])
+                assemble1st.append(ret)
             print(" ==> ", ret)
         print("\n\n\n\n\n\n")
         print(assemble1st)
 
         print("Labels : ", labels)
 
-        bytecode = []
+        # Expansion des labels
         for item in assemble1st:
             if ("label" in item):
                 labelIndex = labels[item["label"]]
@@ -414,10 +417,11 @@ def assemble(path):
                     if (item["opcode"][index] == "label"):
                         item["opcode"][index] = labelIndex
             bytecode.extend(item["opcode"])
-            pass
+
         print("\n\n\n\n\n\n")
         print(assemble1st)
         print(bytecode)
+    return bytecode
 
 
 if (__name__ == "__main__"):
@@ -431,26 +435,8 @@ if (__name__ == "__main__"):
     print(path)
 
 
-    assemble(path)
-    print("Labels :", labels)
+    code = assemble(path)
+    with open(path + ".bin", "wb") as file:
+        file.write(bytes(code))
     exit(0)
 
-
-#decodeLine("    MOV R4    R2               ; COMMENTAIRE OUAISSSSSSSSS", 1)
-
-
-
-# print(instructions)
-
-
-# ligne = "MOV R0 R1"
-
-# ins = instructions["MOV"]
-
-
-# print("\n\n\n")
-# print(ins)
-# print(ins["args"])
-# print(ins["args"][0])
-# print(ins["args"][1])
-