93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
1 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
2 |
.class public fib.fib
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
3 |
.super java/lang/Object
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
4 |
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
5 |
.method public <init>()V
|
545
|
6 |
aload_0
|
|
7 |
invokenonvirtual java/lang/Object/<init>()V
|
|
8 |
return
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
9 |
.end method
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
10 |
|
545
|
11 |
.method public static print(Ljava/lang/String;)V
|
|
12 |
.limit locals 5
|
|
13 |
.limit stack 5
|
|
14 |
aload 0
|
|
15 |
getstatic java/lang/System/out Ljava/io/PrintStream;
|
|
16 |
swap
|
|
17 |
invokevirtual java/io/PrintStream/print(Ljava/lang/String;)V
|
|
18 |
return
|
207
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
19 |
.end method
|
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
20 |
|
545
|
21 |
.method public static write(I)V
|
|
22 |
.limit locals 1
|
|
23 |
.limit stack 2
|
|
24 |
getstatic java/lang/System/out Ljava/io/PrintStream;
|
|
25 |
iload 0
|
|
26 |
invokevirtual java/io/PrintStream/println(I)V
|
|
27 |
return
|
|
28 |
.end method
|
|
29 |
|
|
30 |
.method public static read()I
|
|
31 |
.limit locals 10
|
373
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
32 |
.limit stack 10
|
211
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
33 |
|
545
|
34 |
ldc 0
|
|
35 |
istore 1 ; this will hold our final integer
|
|
36 |
Label1:
|
|
37 |
getstatic java/lang/System/in Ljava/io/InputStream;
|
|
38 |
invokevirtual java/io/InputStream/read()I
|
|
39 |
istore 2
|
|
40 |
iload 2
|
|
41 |
ldc 10 ; the newline delimiter
|
|
42 |
isub
|
|
43 |
ifeq Label2
|
|
44 |
iload 2
|
|
45 |
ldc 32 ; the space delimiter
|
|
46 |
isub
|
373
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
47 |
ifeq Label2
|
211
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
48 |
|
545
|
49 |
iload 2
|
|
50 |
ldc 48 ; we have our digit in ASCII, have to subtract it from 48
|
|
51 |
isub
|
|
52 |
ldc 10
|
|
53 |
iload 1
|
|
54 |
imul
|
|
55 |
iadd
|
|
56 |
istore 1
|
|
57 |
goto Label1
|
|
58 |
Label2:
|
|
59 |
;when we come here we have our integer computed in local variable 1
|
|
60 |
iload 1
|
|
61 |
ireturn
|
211
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
62 |
.end method
|
207
Christian Urban <christian dot urban at kcl dot ac dot uk>
diff
changeset
|
63 |
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
64 |
.method public static main([Ljava/lang/String;)V
|
545
|
65 |
.limit locals 200
|
|
66 |
.limit stack 200
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
67 |
|
545
|
68 |
ldc "Fib"
|
|
69 |
invokestatic fib/fib/print(Ljava/lang/String;)V
|
|
70 |
invokestatic fib/fib/read()I
|
|
71 |
istore 0
|
|
72 |
ldc 0
|
|
73 |
istore 1
|
|
74 |
ldc 1
|
|
75 |
istore 2
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
76 |
|
545
|
77 |
Loop_start_1:
|
|
78 |
|
|
79 |
iload 0
|
|
80 |
ldc 0
|
|
81 |
if_icmple Loop_end_0
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
82 |
|
545
|
83 |
iload 2
|
|
84 |
istore 3
|
|
85 |
iload 1
|
|
86 |
iload 2
|
|
87 |
iadd
|
|
88 |
istore 2
|
|
89 |
iload 3
|
|
90 |
istore 1
|
|
91 |
iload 0
|
|
92 |
ldc 1
|
|
93 |
isub
|
|
94 |
istore 0
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
95 |
|
545
|
96 |
goto Loop_start_1
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
97 |
|
545
|
98 |
Loop_end_0:
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
99 |
|
545
|
100 |
ldc "Result"
|
|
101 |
invokestatic fib/fib/print(Ljava/lang/String;)V
|
|
102 |
iload 2
|
|
103 |
invokestatic fib/fib/write(I)V
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
104 |
|
545
|
105 |
return
|
93
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff
changeset
|
106 |
.end method
|