1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2026 Meta Platforms, Inc. and affiliates. */
#include <vmlinux.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
long t_b, t_c, t_ret;
SEC("fexit/bpf_testmod_test_int128_arg")
int test_int128_arg_fexit(unsigned long long *ctx)
{
t_b = (int)ctx[2];
t_c = (long)ctx[3];
t_ret = (long)ctx[4];
return 0;
}
/*
* The arguments come packed in the BPF convention whatever holes the
* kernel convention left between them: an eightbyte each, and two for the
* struct holding an __int128.
*/
long s_g, s_h_lo, s_h_hi, s_i, s_ret;
SEC("fentry/bpf_testmod_test_int128_stack")
int test_int128_stack_fentry(unsigned long long *ctx)
{
s_g = ctx[6];
s_h_lo = ctx[7];
s_h_hi = ctx[8];
s_i = ctx[9];
return 0;
}
SEC("fexit/bpf_testmod_test_int128_stack")
int test_int128_stack_fexit(unsigned long long *ctx)
{
s_ret = ctx[10];
return 0;
}
long b_f_a, b_f_b, b_g, b_h, b_i_lo, b_i_hi, b_ret;
SEC("fentry/bpf_testmod_test_int128_backfill")
int test_int128_backfill_fentry(unsigned long long *ctx)
{
b_f_a = ctx[5];
b_f_b = ctx[6];
b_g = ctx[7];
b_h = ctx[8];
b_i_lo = ctx[9];
b_i_hi = ctx[10];
return 0;
}
SEC("fexit/bpf_testmod_test_int128_backfill")
int test_int128_backfill_fexit(unsigned long long *ctx)
{
b_ret = ctx[11];
return 0;
}
char _license[] SEC("license") = "GPL";
|
