1 // SPDX-License-Identifier: GPL-2.0
2
3 #include <linux/bpf.h>
4 #include <bpf/bpf_helpers.h>
5 #include "bpf_misc.h"
6
7 #if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
8 (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \
9 defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390) || \
10 defined(__TARGET_ARCH_loongarch)) && \
11 __clang_major__ >= 18
12
13 SEC("socket")
14 __description("gotol, small_imm")
15 __success __success_unpriv __retval(1)
16 __naked void gotol_small_imm(void)
17 {
18 asm volatile (" \
19 call %[bpf_ktime_get_ns]; \
20 if r0 == 0 goto l0_%=; \
21 gotol l1_%=; \
22 l2_%=: \
23 gotol l3_%=; \
24 l1_%=: \
25 r0 = 1; \
26 gotol l2_%=; \
27 l0_%=: \
28 r0 = 2; \
29 l3_%=: \
30 exit; \
31 " :
32 : __imm(bpf_ktime_get_ns)
33 : __clobber_all);
34 }
35
36 SEC("socket")
37 __description("gotol, large_imm")
38 __success __failure_unpriv __retval(40000)
39 __naked void gotol_large_imm(void)
40 {
41 asm volatile (" \
42 gotol 1f; \
43 0: \
44 r0 = 0; \
45 .rept 40000; \
46 r0 += 1; \
47 .endr; \
48 exit; \
49 1: gotol 0b; \
50 " :
51 :
52 : __clobber_all);
53 }
54
55 #else
56
57 SEC("socket")
58 __description("cpuv4 is not supported by compiler or jit, use a dummy test")
59 __success
60 int dummy_test(void)
61 {
62 return 0;
63 }
64
65 #endif
66
67 char _license[] SEC("license") = "GPL";
68
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