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33 lines
733 B
C
33 lines
733 B
C
#define BPF_NO_GLOBAL_DATA
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// #define BPF_NO_PRESERVE_ACCESS_INDEX
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#ifndef BPF_NO_PRESERVE_ACCESS_INDEX
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#pragma clang attribute push (__attribute__((preserve_access_index)), apply_to = record)
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#endif
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struct data {
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int a;
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int c;
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int d;
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};
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#ifndef BPF_NO_PRESERVE_ACCESS_INDEX
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#pragma clang attribute pop
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#endif
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SEC("uprobe/examples/btf-base:add_test")
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int BPF_UPROBE(add_test, struct data *d)
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{
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int a = 0, c = 0;
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bpf_probe_read_user(&a, sizeof(a), &d->a);
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bpf_probe_read_user(&c, sizeof(c), &d->c);
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bpf_printk("add_test(&d) %d + %d = %d\n", a, c, a + c);
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return a + c;
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}
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char LICENSE[] SEC("license") = "Dual BSD/GPL";
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