1# This filter is compiled to all_instructions.bpf by the `bpf_asm`
2# tool, which can be found in the linux kernel source tree under
3# tools/bpf.
4
5# Load immediate
6ld #42
7ldx #42
8
9# Load scratch
10ld M[3]
11ldx M[3]
12
13# Load absolute
14ldb [42]
15ldh [42]
16ld [42]
17
18# Load indirect
19ldb [x + 42]
20ldh [x + 42]
21ld [x + 42]
22
23# Load IPv4 header length
24ldx 4*([42]&0xf)
25
26# Run extension function
27ld #len
28ld #proto
29ld #type
30ld #rand
31
32# Store scratch
33st M[3]
34stx M[3]
35
36# A <op> constant
37add #42
38sub #42
39mul #42
40div #42
41or #42
42and #42
43lsh #42
44rsh #42
45mod #42
46xor #42
47
48# A <op> X
49add x
50sub x
51mul x
52div x
53or x
54and x
55lsh x
56rsh x
57mod x
58xor x
59
60# !A
61neg
62
63# Jump A <op> constant
64ja end
65jeq #42,prev,end
66jne #42,end
67jlt #42,end
68jle #42,end
69jgt #42,prev,end
70jge #42,prev,end
71jset #42,prev,end
72
73# Jump A <op> X
74jeq x,prev,end
75jne x,end
76jlt x,end
77jle x,end
78jgt x,prev,end
79jge x,prev,end
80jset x,prev,end
81
82# Register transfers
83tax
84txa
85
86# Returns
87prev: ret a
88end: ret #42
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